diff --git a/.gitmodules b/.gitmodules new file mode 100644 index 0000000..f6fa12d --- /dev/null +++ b/.gitmodules @@ -0,0 +1,6 @@ +[submodule "cmake/backbone"] + path = cmake/backbone + url = git@git.backbone.ws:make/cmake-backbone-modules.git +[submodule "util/backbone-utils"] + path = util/backbone + url = git@git.backbone.ws:make/cmake-backbone-utils.git diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..609258d --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Kolan Sh diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..0383a4c --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,21 @@ +PROJECT (CairoChart C) + +CMAKE_MINIMUM_REQUIRED (VERSION 2.8) + +SET (PROJECT_LOWERCASE_NAME "cairo-chart") +SET (PROJECT_DESCRIPTION "GtkChart for Gtk.DrawingArea (Cairo).") + +SET (MAJOR 0) +SET (MINOR 1) +SET (PATCH 0) + +LIST (APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/backbone) + +ADD_SUBDIRECTORY (src) +ADD_SUBDIRECTORY (po) +ADD_SUBDIRECTORY (pkg-config) +ADD_SUBDIRECTORY (test) +ADD_SUBDIRECTORY (cpack) + +# enable testing +#ENABLE_TESTING () diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..65c5ca8 --- /dev/null +++ b/COPYING @@ -0,0 +1,165 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. Additional Definitions. + + As used herein, "this License" refers to version 3 of the GNU Lesser +General Public License, and the "GNU GPL" refers to version 3 of the GNU +General Public License. + + "The Library" refers to a covered work governed by this License, +other than an Application or a Combined Work as defined below. + + An "Application" is any work that makes use of an interface provided +by the Library, but which is not otherwise based on the Library. +Defining a subclass of a class defined by the Library is deemed a mode +of using an interface provided by the Library. + + A "Combined Work" is a work produced by combining or linking an +Application with the Library. The particular version of the Library +with which the Combined Work was made is also called the "Linked +Version". + + The "Minimal Corresponding Source" for a Combined Work means the +Corresponding Source for the Combined Work, excluding any source code +for portions of the Combined Work that, considered in isolation, are +based on the Application, and not on the Linked Version. + + The "Corresponding Application Code" for a Combined Work means the +object code and/or source code for the Application, including any data +and utility programs needed for reproducing the Combined Work from the +Application, but excluding the System Libraries of the Combined Work. + + 1. Exception to Section 3 of the GNU GPL. + + You may convey a covered work under sections 3 and 4 of this License +without being bound by section 3 of the GNU GPL. + + 2. Conveying Modified Versions. + + If you modify a copy of the Library, and, in your modifications, a +facility refers to a function or data to be supplied by an Application +that uses the facility (other than as an argument passed when the +facility is invoked), then you may convey a copy of the modified +version: + + a) under this License, provided that you make a good faith effort to + ensure that, in the event an Application does not supply the + function or data, the facility still operates, and performs + whatever part of its purpose remains meaningful, or + + b) under the GNU GPL, with none of the additional permissions of + this License applicable to that copy. + + 3. Object Code Incorporating Material from Library Header Files. + + The object code form of an Application may incorporate material from +a header file that is part of the Library. You may convey such object +code under terms of your choice, provided that, if the incorporated +material is not limited to numerical parameters, data structure +layouts and accessors, or small macros, inline functions and templates +(ten or fewer lines in length), you do both of the following: + + a) Give prominent notice with each copy of the object code that the + Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the object code with a copy of the GNU GPL and this license + document. + + 4. Combined Works. + + You may convey a Combined Work under terms of your choice that, +taken together, effectively do not restrict modification of the +portions of the Library contained in the Combined Work and reverse +engineering for debugging such modifications, if you also do each of +the following: + + a) Give prominent notice with each copy of the Combined Work that + the Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the Combined Work with a copy of the GNU GPL and this license + document. + + c) For a Combined Work that displays copyright notices during + execution, include the copyright notice for the Library among + these notices, as well as a reference directing the user to the + copies of the GNU GPL and this license document. + + d) Do one of the following: + + 0) Convey the Minimal Corresponding Source under the terms of this + License, and the Corresponding Application Code in a form + suitable for, and under terms that permit, the user to + recombine or relink the Application with a modified version of + the Linked Version to produce a modified Combined Work, in the + manner specified by section 6 of the GNU GPL for conveying + Corresponding Source. + + 1) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (a) uses at run time + a copy of the Library already present on the user's computer + system, and (b) will operate properly with a modified version + of the Library that is interface-compatible with the Linked + Version. + + e) Provide Installation Information, but only if you would otherwise + be required to provide such information under section 6 of the + GNU GPL, and only to the extent that such information is + necessary to install and execute a modified version of the + Combined Work produced by recombining or relinking the + Application with a modified version of the Linked Version. (If + you use option 4d0, the Installation Information must accompany + the Minimal Corresponding Source and Corresponding Application + Code. If you use option 4d1, you must provide the Installation + Information in the manner specified by section 6 of the GNU GPL + for conveying Corresponding Source.) + + 5. Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff --git a/INSTALL b/INSTALL new file mode 100644 index 0000000..3e899a5 --- /dev/null +++ b/INSTALL @@ -0,0 +1,84 @@ + Requirements + ------------ + + Build-Time Dependencies + +Vala: https://wiki.gnome.org/Projects/Vala +Gee: https://wiki.gnome.org/Projects/Libgee +CMake: http://www.cmake.org +NSIS (W32): http://nsis.sourceforge.net + + Run-Time Dependencies + +Gee: https://wiki.gnome.org/Projects/Libgee + + Operation Systems + + * GNU/Linux (Gentoo, Debian, etc.) + * MS Windows (Windows 5.1 aka XP) + * BSD-based (FreeBSD, OpenBSD, NetBSD, Mac OS X) + +If you need support of one more OS, be free in writing of patches and sending +pull-requests to the mainstream. + + + Compilation + ----------- + + Compilation under GNU/Linux + +$ mkdir build-gcc && cd build-gcc +$ cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr +$ make -j$((`getconf _NPROCESSORS_ONLN`+1)) + + Compilation under MS Windows + +$ mkdir build-mingw && cd build-mingw +$ cmake -G "MSYS Makefiles" .. -DCMAKE_BUILD_TYPE=Release +$ make -j$((NUMBER_OF_PROCESSORS + 1)) + + Compilation under BSD-based Systems. + +TODO: add description here. + + + Packing/Installation + -------------------- + + Packing/Installation under GNU/Linux + +$ cpack +Install using System Package Manager. + + Packing/Installation under MS Windows + +$ cpack +Install using generated by NSIS executable. + + Packing/Installation under BSD-based + +$ cpack +Install using System Package Manager. + + + Testing + ------- + + Testing under GNU/Linux + +$ ctest -j$((`getconf _NPROCESSORS_ONLN`+1)) + +Automated tests for memory leaks: +$ ctest -j$((NUMBER_OF_PROCESSORS + 1)) -D NightlyMemCheck && grep definitely Testing/Temporary/LastDynamicAnalysis_*.log + + Testing under MS Windows + +$ ctest -j$((NUMBER_OF_PROCESSORS + 1)) +Automated tests for memory leaks are not available as far as Valgrind not +present on this platform. + + Testing under BSD-based + +$ ctest +Automated tests for memory leaks are not available as far as Valgrind not +present on this platform. diff --git a/MAINTAINERS b/MAINTAINERS new file mode 100644 index 0000000..f2b408a --- /dev/null +++ b/MAINTAINERS @@ -0,0 +1,2 @@ +Kolan Sh +email: backbone@backbone.ws diff --git a/README.md b/README.md new file mode 100644 index 0000000..90eac89 --- /dev/null +++ b/README.md @@ -0,0 +1,20 @@ +# Cairo-Chart (GTK3+) + +Gtk+ Chart for DrawingArea widget with multiaxes, dates and cursors. + +Project Page: https://redmine.backbone.ws/projects/cairo-chart + +Git: https://git.backbone.ws/gtk/cairo-chart + +## View YouTube movie + +[![View video](https://img.youtube.com/vi/wmZAw2csjQg/0.jpg)](https://www.youtube.com/watch?v=wmZAw2csjQg) + +## Screenshots +![Screenshot1](https://redmine.backbone.ws/attachments/download/424/20171225_020441.png) +![Screenshot2](https://redmine.backbone.ws/attachments/download/425/20171225_020414.png) +![Screenshot3](https://redmine.backbone.ws/attachments/download/426/20171225_020350.png) +![Screenshot4](https://redmine.backbone.ws/attachments/download/427/20171225_020330.png) +![Screenshot5](https://redmine.backbone.ws/attachments/download/428/20171225_020315.png) +![Screenshot6](https://redmine.backbone.ws/attachments/download/429/20171225_020301.png) +![Screenshot7](https://redmine.backbone.ws/attachments/download/430/20171225_020237.png) diff --git a/cmake/backbone b/cmake/backbone new file mode 160000 index 0000000..5aec8e8 --- /dev/null +++ b/cmake/backbone @@ -0,0 +1 @@ +Subproject commit 5aec8e830a52e88f61c8844ac15dca72b1ef7f06 diff --git a/cpack/CMakeLists.txt b/cpack/CMakeLists.txt new file mode 100644 index 0000000..c895094 --- /dev/null +++ b/cpack/CMakeLists.txt @@ -0,0 +1,10 @@ +SET (CONTACT "backbone@backbone.ws") +SET (DEBIAN_DEPENDENCIES "valac (>= 0.24), libgtk-3-0 (>= 3.20)") +SET (DEBIAN_SECTION "Libraries") +SET (REDHAT_DEPENDENCIES "vala >= 0.24, gtk+ >= 3.20") +SET (REDHAT_SECTION "Development/Libraries") +SET (LICENSE "LGPLv3+") +SET (WIN32_UNINSTALL_NAME "GtkChart") # <= 8 symbols for the name +SET (CPACK_NSIS_MENU_LINKS "https://redmine.backbone.ws/projects/gtkchart" + "Homepage for GtkChart") +INCLUDE (CPackCommonRules) diff --git a/pkg-config/CMakeLists.txt b/pkg-config/CMakeLists.txt new file mode 100644 index 0000000..3c5e0f4 --- /dev/null +++ b/pkg-config/CMakeLists.txt @@ -0,0 +1,13 @@ +INCLUDE (PkgConfigCommonRules) + +SET (PkgConfigLibs "-L\${libdir}") +IF (WIN32) + SET (PkgConfigLibs "${PkgConfigLibs} -l${PROJECT_LOWERCASE_NAME}-${MAJOR}") +ELSE (WIN32) + SET (PkgConfigLibs "${PkgConfigLibs} -l${PROJECT_LOWERCASE_NAME}.so.${MAJOR}") +ENDIF (WIN32) + +CONFIGURE_FILE ( + "${CMAKE_SOURCE_DIR}/cmake/backbone/templates/pkg-config.pc.in" + "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_LOWERCASE_NAME}-${MAJOR}.pc" +) diff --git a/po/CMakeLists.txt b/po/CMakeLists.txt new file mode 100644 index 0000000..c191c1b --- /dev/null +++ b/po/CMakeLists.txt @@ -0,0 +1 @@ +INCLUDE (GettextCommonRules) diff --git a/po/ru/CMakeLists.txt b/po/ru/CMakeLists.txt new file mode 100644 index 0000000..0b6020c --- /dev/null +++ b/po/ru/CMakeLists.txt @@ -0,0 +1 @@ +INCLUDE (GettextLangRules) diff --git a/src/Axis.vala b/src/Axis.vala new file mode 100644 index 0000000..6c14f7f --- /dev/null +++ b/src/Axis.vala @@ -0,0 +1,101 @@ +namespace Gtk.CairoChart { + // If one of axis:title or axis:min/max are different + // then draw separate axis for each/all series + // or specify series name near the axis + public class Axis { + Float128 _min = 0; + Float128 _max = 0; + public Float128 min { + get { return _min; } + set { _min = zoom_min = value; } + default = 0; + } + public Float128 max { + get { return _max; } + set { _max = zoom_max = value; } + default = 1; + } + public Float128 zoom_min = 0; + public Float128 zoom_max = 1; + public Text title = new Text (""); + public enum Type { + NUMBERS = 0, + DATE_TIME + } + public enum ScaleType { + LINEAR = 0, // default + // LOGARITHMIC, // TODO + // etc + } + public Type type; + public ScaleType scale_type; + public enum Position { + LOW = 0, + HIGH = 1, + BOTH = 2 + } + public Position position = Position.LOW; + + string _format = "%.2Lf"; + string _date_format = "%Y.%m.%d"; + string _time_format = "%H:%M:%S"; + int _dsec_signs = 2; // 2 signs = centiseconds + public string format { + get { return _format; } + set { + // TODO: check format + _format = value; + } + default = "%.2Lf"; + } + public string date_format { + get { return _date_format; } + set { + // TODO: check format + _date_format = value; + } + default = "%Y.%m.%d"; + } + public string time_format { + get { return _time_format; } + set { + // TODO: check format + _time_format = value; + } + default = "%H:%M:%S"; + } + public int dsec_signs { + get { return _dsec_signs; } + set { + // TODO: check format + _dsec_signs = value; + } + default = 2; + } + public FontStyle font_style = FontStyle (); + public Color color = Color (); + public LineStyle line_style = LineStyle (); + public double font_indent = 5; + + public Axis copy () { + var axis = new Axis (); + axis._date_format = this._date_format; + axis._dsec_signs = this._dsec_signs; + axis._format = this._format; + axis._time_format = this._time_format; + axis.color = this.color; + axis.font_indent = this.font_indent; + axis.font_style = this.font_style; + axis.line_style = this.line_style; + axis.max = this.max; + axis.min = this.min; + axis.position = this.position; + axis.scale_type = this.scale_type; + axis.title = this.title.copy(); + axis.type = this.type; + return axis; + } + + public Axis () {} + } +} diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt new file mode 100644 index 0000000..18cf02f --- /dev/null +++ b/src/CMakeLists.txt @@ -0,0 +1,18 @@ +SET (LibName ${PROJECT_LOWERCASE_NAME}) +FILE (GLOB_RECURSE LibSources RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.vala) +SET (LibPackages cairo gtk+-3.0) +SET (LibPkgModules gtk+-3.0) +SET (LibInstall ON) +SET (LibExtraSources ${CMAKE_CURRENT_BINARY_DIR}/library_constructor.c) +SET (LC_RELATIVE_PREFIX "..") +CONFIGURE_FILE ( "${CMAKE_SOURCE_DIR}/cmake/backbone/templates/library_constructor.c.in" "${LibExtraSources}") +INCLUDE_DIRECTORIES ("${CMAKE_SOURCE_DIR}/src") +SET (LibCustomVapis ${CMAKE_SOURCE_DIR}/src/cairo-chart-float128type.vapi) +INCLUDE (ValaLibCommonRules) +INSTALL (FILES ${CMAKE_CURRENT_SOURCE_DIR}/cairo-chart-float128type.h DESTINATION include + RENAME cairo-chart-float128type-${MAJOR}.h) +INSTALL (FILES ${CMAKE_CURRENT_SOURCE_DIR}/cairo-chart-float128type.vapi DESTINATION share/vala/vapi + RENAME cairo-chart-float128type-${MAJOR}.vapi) +CONFIGURE_FILE (${CMAKE_CURRENT_SOURCE_DIR}/cairo-chart.deps.in + ${CMAKE_CURRENT_BINARY_DIR}/cairo-chart-${MAJOR}.deps) +INSTALL (FILES ${CMAKE_CURRENT_BINARY_DIR}/cairo-chart-${MAJOR}.deps DESTINATION share/vala/vapi) diff --git a/src/Chart.vala b/src/Chart.vala new file mode 100644 index 0000000..b493bc6 --- /dev/null +++ b/src/Chart.vala @@ -0,0 +1,1732 @@ +namespace Gtk.CairoChart { + public class Chart { + + public double x_min = 0.0; + public double y_min = 0.0; + public double width = 0.0; + public double height = 0.0; + + public Cairo.Context context = null; + + public Color bg_color; + public bool show_legend = true; + public Text title = new Text ("Cairo Chart"); + public Color border_color = Color(0, 0, 0, 0.3); + + + public Legend legend = new Legend (); + + public Series[] series = {}; + + public Chart () { + bg_color = Color (1, 1, 1); + } + + protected double cur_x_min = 0.0; + protected double cur_x_max = 1.0; + protected double cur_y_min = 0.0; + protected double cur_y_max = 1.0; + + public virtual void check_cur_values () { + if (cur_x_min > cur_x_max) + cur_x_max = cur_x_min; + if (cur_y_min > cur_y_max) + cur_y_max = cur_y_min; + } + + public virtual void clear () { + draw_background (); + } + + public virtual bool draw () { + + cur_x_min = x_min; + cur_y_min = y_min; + cur_x_max = x_min + width; + cur_y_max = y_min + height; + + draw_chart_title (); + check_cur_values (); + + draw_legend (); + check_cur_values (); + + set_vertical_axes_titles (); + + get_cursors_crossings(); + + calc_plot_area (); // Calculate plot area + + draw_horizontal_axis (); + check_cur_values (); + + draw_vertical_axis (); + check_cur_values (); + + draw_plot_area_border (); + check_cur_values (); + + draw_series (); + check_cur_values (); + + draw_cursors (); + check_cur_values (); + + return true; + } + + public virtual void set_source_rgba (Color color) { + context.set_source_rgba (color.red, color.green, color.blue, color.alpha); + } + + protected virtual void draw_background () { + if (context != null) { + set_source_rgba (bg_color); + context.paint(); + set_source_rgba (Color (0, 0, 0, 1)); + } + } + + protected double rel_zoom_x_min = 0.0; + protected double rel_zoom_x_max = 1.0; + protected double rel_zoom_y_min = 0.0; + protected double rel_zoom_y_max = 1.0; + + int zoom_first_show = 0; + + public virtual void zoom_in (double x0, double y0, double x1, double y1) { + for (var si = 0, max_i = series.length; si < max_i; ++si) { + var s = series[si]; + if (!s.zoom_show) continue; + var real_x0 = get_real_x (s, x0); + var real_x1 = get_real_x (s, x1); + var real_y0 = get_real_y (s, y0); + var real_y1 = get_real_y (s, y1); + // if selected square does not intersect with the series's square + if ( real_x1 <= s.axis_x.zoom_min || real_x0 >= s.axis_x.zoom_max + || real_y0 <= s.axis_y.zoom_min || real_y1 >= s.axis_y.zoom_max) { + s.zoom_show = false; + continue; + } + if (real_x0 >= s.axis_x.zoom_min) { + s.axis_x.zoom_min = real_x0; + s.place.zoom_x_low = 0.0; + } else { + s.place.zoom_x_low = (s.axis_x.zoom_min - real_x0) / (real_x1 - real_x0); + } + if (real_x1 <= s.axis_x.zoom_max) { + s.axis_x.zoom_max = real_x1; + s.place.zoom_x_high = 1.0; + } else { + s.place.zoom_x_high = (s.axis_x.zoom_max - real_x0) / (real_x1 - real_x0); + } + if (real_y1 >= s.axis_y.zoom_min) { + s.axis_y.zoom_min = real_y1; + s.place.zoom_y_low = 0.0; + } else { + s.place.zoom_y_low = (s.axis_y.zoom_min - real_y1) / (real_y0 - real_y1); + } + if (real_y0 <= s.axis_y.zoom_max) { + s.axis_y.zoom_max = real_y0; + s.place.zoom_y_high = 1.0; + } else { + s.place.zoom_y_high = (s.axis_y.zoom_max - real_y1) / (real_y0 - real_y1); + } + } + + zoom_first_show = 0; + for (var si = 0, max_i = series.length; si < max_i; ++si) + if (series[si].zoom_show) { + zoom_first_show = si; + break; + } + + var new_rel_zoom_x_min = rel_zoom_x_min + (x0 - plot_area_x_min) / (plot_area_x_max - plot_area_x_min) * (rel_zoom_x_max - rel_zoom_x_min); + var new_rel_zoom_x_max = rel_zoom_x_min + (x1 - plot_area_x_min) / (plot_area_x_max - plot_area_x_min) * (rel_zoom_x_max - rel_zoom_x_min); + var new_rel_zoom_y_min = rel_zoom_y_min + (y0 - plot_area_y_min) / (plot_area_y_max - plot_area_y_min) * (rel_zoom_y_max - rel_zoom_y_min); + var new_rel_zoom_y_max = rel_zoom_y_min + (y1 - plot_area_y_min) / (plot_area_y_max - plot_area_y_min) * (rel_zoom_y_max - rel_zoom_y_min); + rel_zoom_x_min = new_rel_zoom_x_min; + rel_zoom_x_max = new_rel_zoom_x_max; + rel_zoom_y_min = new_rel_zoom_y_min; + rel_zoom_y_max = new_rel_zoom_y_max; + } + + public virtual void zoom_out () { + foreach (var s in series) { + s.zoom_show = true; + s.axis_x.zoom_min = s.axis_x.min; + s.axis_x.zoom_max = s.axis_x.max; + s.axis_y.zoom_min = s.axis_y.min; + s.axis_y.zoom_max = s.axis_y.max; + s.place.zoom_x_low = s.place.x_low; + s.place.zoom_x_high = s.place.x_high; + s.place.zoom_y_low = s.place.y_low; + s.place.zoom_y_high = s.place.y_high; + } + rel_zoom_x_min = 0; + rel_zoom_x_max = 1; + rel_zoom_y_min = 0; + rel_zoom_y_max = 1; + + zoom_first_show = 0; + } + + public virtual void move (double delta_x, double delta_y) { + delta_x /= plot_area_x_max - plot_area_x_min; delta_x *= - 1.0; + delta_y /= plot_area_y_max - plot_area_y_min; delta_y *= - 1.0; + var rzxmin = rel_zoom_x_min, rzxmax = rel_zoom_x_max, rzymin = rel_zoom_y_min, rzymax = rel_zoom_y_max; + zoom_out(); + //draw(); // TODO: optimize here + delta_x *= plot_area_x_max - plot_area_x_min; + delta_y *= plot_area_y_max - plot_area_y_min; + var xmin = plot_area_x_min + (plot_area_x_max - plot_area_x_min) * rzxmin; + var xmax = plot_area_x_min + (plot_area_x_max - plot_area_x_min) * rzxmax; + var ymin = plot_area_y_min + (plot_area_y_max - plot_area_y_min) * rzymin; + var ymax = plot_area_y_min + (plot_area_y_max - plot_area_y_min) * rzymax; + + delta_x *= rzxmax - rzxmin; delta_y *= rzymax - rzymin; + + if (xmin + delta_x < plot_area_x_min) delta_x = plot_area_x_min - xmin; + if (xmax + delta_x > plot_area_x_max) delta_x = plot_area_x_max - xmax; + if (ymin + delta_y < plot_area_y_min) delta_y = plot_area_y_min - ymin; + if (ymax + delta_y > plot_area_y_max) delta_y = plot_area_y_max - ymax; + + zoom_in (xmin + delta_x, ymin + delta_y, xmax + delta_x, ymax + delta_y); + //draw(); // TODO: optimize here + } + + protected double title_width = 0.0; + protected double title_height = 0.0; + + public double title_vindent = 4; + + protected virtual void show_text(Text text) { + context.select_font_face(text.style.family, + text.style.slant, + text.style.weight); + context.set_font_size(text.style.size); + if (text.style.orientation == FontOrient.VERTICAL) { + context.rotate(- Math.PI / 2.0); + context.show_text(text.text); + context.rotate(Math.PI / 2.0); + } else { + context.show_text(text.text); + } + } + + protected virtual void draw_chart_title () { + title_width = title.get_width (context); + title_height = title.get_height (context) + (legend.position == Legend.Position.TOP ? title_vindent * 2 : title_vindent); + cur_y_min += title_height; + set_source_rgba(title.color); + context.move_to (width/2 - title_width/2 - title.get_x_bearing(context), title.get_height(context) + title_vindent); + show_text(title); + } + + protected double legend_width = 0; + protected double legend_height = 0; + + protected enum LegendProcessType { + CALC = 0, // default + DRAW + } + + protected virtual void set_line_style (LineStyle style) { + set_source_rgba(style.color); + context.set_line_join(style.line_join); + context.set_line_cap(style.line_cap); + context.set_line_width(style.width); + context.set_dash(style.dashes, style.dash_offset); + } + + protected virtual void draw_legend_rect (out double x0, out double y0) { + x0 = y0 = 0.0; + if (context != null) { + switch (legend.position) { + case Legend.Position.TOP: + x0 = (width - legend_width) / 2; + y0 = title_height; + break; + + case Legend.Position.BOTTOM: + x0 = (width - legend_width) / 2; + y0 = height - legend_height; + break; + + case Legend.Position.LEFT: + x0 = 0; + y0 = (height - legend_height) / 2; + break; + + case Legend.Position.RIGHT: + x0 = width - legend_width; + y0 = (height - legend_height) / 2; + break; + } + set_source_rgba(legend.bg_color); + context.rectangle (x0, y0, legend_width, legend_height); + context.fill(); + set_line_style(legend.border_style); + context.move_to (x0, y0); + context.rel_line_to (legend_width, 0); + context.rel_line_to (0, legend_height); + context.rel_line_to (-legend_width, 0); + context.rel_line_to (0, -legend_height); + context.stroke (); + } + } + + public double legend_line_length = 30.0; + public double legend_text_hspace = 10.0; + public double legend_text_vspace = 2.0; + public double marker_size = 8.0; + + protected virtual void draw_marker_at_pos (Series.MarkerType marker_type, + double x, double y) { + context.move_to (x, y); + switch (marker_type) { + case Series.MarkerType.SQUARE: + context.rectangle (x - marker_size / 2, y - marker_size / 2, + marker_size, marker_size); + context.fill(); + break; + + case Series.MarkerType.CIRCLE: + context.arc (x, y, marker_size / 2, 0, 2*Math.PI); + context.fill(); + break; + + case Series.MarkerType.TRIANGLE: + context.move_to (x - marker_size / 2, y - marker_size / 2); + context.line_to (x + marker_size / 2, y - marker_size / 2); + context.line_to (x, y + marker_size / 2); + context.line_to (x - marker_size / 2, y - marker_size / 2); + context.fill(); + break; + + case Series.MarkerType.PRICLE_SQUARE: + context.rectangle (x - marker_size / 2, y - marker_size / 2, + marker_size, marker_size); + context.stroke(); + break; + + case Series.MarkerType.PRICLE_CIRCLE: + context.arc (x, y, marker_size / 2, 0, 2*Math.PI); + context.stroke(); + break; + + case Series.MarkerType.PRICLE_TRIANGLE: + context.move_to (x - marker_size / 2, y - marker_size / 2); + context.line_to (x + marker_size / 2, y - marker_size / 2); + context.line_to (x, y + marker_size / 2); + context.line_to (x - marker_size / 2, y - marker_size / 2); + context.stroke(); + break; + } + } + + double [] max_font_heights; + protected virtual void process_legend (LegendProcessType process_type) { + var legend_x0 = 0.0, legend_y0 = 0.0; + var heights_idx = 0; + var leg_width_sum = 0.0; + var leg_height_sum = 0.0; + double max_font_h = 0.0; + + // prepare + switch (process_type) { + case LegendProcessType.CALC: + legend_width = 0.0; + legend_height = 0.0; + max_font_heights = {}; + heights_idx = 0; + break; + case LegendProcessType.DRAW: + draw_legend_rect(out legend_x0, out legend_y0); + break; + } + + foreach (var s in series) { + + if (!s.zoom_show) continue; + + // carry + switch (legend.position) { + case Legend.Position.TOP: + case Legend.Position.BOTTOM: + var ser_title_width = s.title.get_width(context) + legend_line_length; + if (leg_width_sum + (leg_width_sum == 0 ? 0 : legend_text_hspace) + ser_title_width > width) { // carry + leg_height_sum += max_font_h; + switch (process_type) { + case LegendProcessType.CALC: + max_font_heights += max_font_h; + legend_width = double.max(legend_width, leg_width_sum); + break; + case LegendProcessType.DRAW: + heights_idx++; + break; + } + leg_width_sum = 0.0; + max_font_h = 0; + } + break; + } + + switch (process_type) { + case LegendProcessType.DRAW: + var x = legend_x0 + leg_width_sum + (leg_width_sum == 0.0 ? 0.0 : legend_text_hspace); + var y = legend_y0 + leg_height_sum + max_font_heights[heights_idx]; + + // series title + context.move_to (x + legend_line_length - s.title.get_x_bearing(context), y); + set_source_rgba (s.title.color); + show_text(s.title); + + // series line style + context.move_to (x, y - s.title.get_height(context) / 2); + set_line_style(s.line_style); + context.rel_line_to (legend_line_length, 0); + context.stroke(); + draw_marker_at_pos (s.marker_type, x + legend_line_length / 2, y - s.title.get_height(context) / 2); + break; + } + + switch (legend.position) { + case Legend.Position.TOP: + case Legend.Position.BOTTOM: + var ser_title_width = s.title.get_width(context) + legend_line_length; + leg_width_sum += (leg_width_sum == 0 ? 0 : legend_text_hspace) + ser_title_width; + max_font_h = double.max (max_font_h, s.title.get_height(context)) + (leg_height_sum != 0 ? legend_text_vspace : 0); + break; + + case Legend.Position.LEFT: + case Legend.Position.RIGHT: + switch (process_type) { + case LegendProcessType.CALC: + max_font_heights += s.title.get_height(context) + (leg_height_sum != 0 ? legend_text_vspace : 0); + legend_width = double.max (legend_width, s.title.get_width(context) + legend_line_length); + break; + case LegendProcessType.DRAW: + heights_idx++; + break; + } + leg_height_sum += s.title.get_height(context) + (leg_height_sum != 0 ? legend_text_vspace : 0); + break; + } + } + + // TOP, BOTTOM + switch (legend.position) { + case Legend.Position.TOP: + case Legend.Position.BOTTOM: + if (leg_width_sum != 0) { + leg_height_sum += max_font_h; + switch (process_type) { + case LegendProcessType.CALC: + max_font_heights += max_font_h; + legend_width = double.max(legend_width, leg_width_sum); + break; + } + } + break; + } + + switch (process_type) { + case LegendProcessType.CALC: + legend_height = leg_height_sum; + switch (legend.position) { + case Legend.Position.TOP: + cur_y_min += legend_height; + break; + case Legend.Position.BOTTOM: + cur_y_max -= legend_height; + break; + case Legend.Position.LEFT: + cur_x_min += legend_width; + break; + case Legend.Position.RIGHT: + cur_x_max -= legend_width; + break; + } + break; + } + } + + protected virtual void draw_legend () { + process_legend (LegendProcessType.CALC); + process_legend (LegendProcessType.DRAW); + } + + public LineStyle selection_style = LineStyle (); + + public virtual void draw_selection (double x0, double y0, double x1, double y1) { + set_line_style (selection_style); + context.rectangle (x0, y0, x1 - x0, y1 - y0); + context.stroke(); + } + + protected int axis_rec_npoints = 128; + + protected virtual void calc_axis_rec_sizes (Axis axis, out double max_rec_width, out double max_rec_height, bool is_horizontal = true) { + max_rec_width = max_rec_height = 0; + for (var i = 0; i < axis_rec_npoints; ++i) { + Float128 x = (int64)(axis.zoom_min + (axis.zoom_max - axis.zoom_min) / axis_rec_npoints * i) + 1.0/3.0; + switch (axis.type) { + case Axis.Type.NUMBERS: + var text = new Text (axis.format.printf((LongDouble)x) + (is_horizontal ? "_" : ""), axis.font_style); + max_rec_width = double.max (max_rec_width, text.get_width(context)); + max_rec_height = double.max (max_rec_height, text.get_height(context)); + break; + case Axis.Type.DATE_TIME: + string date, time; + format_date_time(axis, x, out date, out time); + + var h = 0.0; + if (axis.date_format != "") { + var text = new Text (date + (is_horizontal ? "_" : ""), axis.font_style); + max_rec_width = double.max (max_rec_width, text.get_width(context)); + h = text.get_height(context); + } + if (axis.time_format != "") { + var text = new Text (time + (is_horizontal ? "_" : ""), axis.font_style); + max_rec_width = double.max (max_rec_width, text.get_width(context)); + h += text.get_height(context); + } + max_rec_height = double.max (max_rec_height, h); + break; + } + } + } + + protected virtual Float128 calc_round_step (Float128 aver_step, bool date_time = false) { + Float128 step = 1.0; + + if (aver_step > 1.0) { + if (date_time) while (step < aver_step) step *= 60; + if (date_time) while (step < aver_step) step *= 60; + if (date_time) while (step < aver_step) step *= 24; + while (step < aver_step) step *= 10; + if (step / 5 > aver_step) step /= 5; + while (step / 2 > aver_step) step /= 2; + } else if (aver_step > 0) { + while (step / 10 > aver_step) step /= 10; + if (step / 5 > aver_step) step /= 5; + while (step / 2 > aver_step) step /= 2; + } + + return step; + } + + public double plot_area_x_min = 0; + public double plot_area_x_max = 0; + public double plot_area_y_min = 0; + public double plot_area_y_max = 0; + + public bool common_x_axes { get; protected set; default = false; } + public bool common_y_axes { get; protected set; default = false; } + public Color common_axis_color = Color (0, 0, 0, 1); + + bool are_intersect (double a_min, double a_max, double b_min, double b_max) { + if ( a_min < a_max <= b_min < b_max + || b_min < b_max <= a_min < a_max) + return false; + return true; + } + + protected virtual void set_vertical_axes_titles () { + for (var si = 0; si < series.length; ++si) { + var s = series[si]; + s.axis_y.title.style.orientation = FontOrient.VERTICAL; + } + } + + protected virtual void calc_plot_area () { + plot_area_x_min = cur_x_min + legend.indent; + plot_area_x_max = cur_x_max - legend.indent; + plot_area_y_min = cur_y_min + legend.indent; + plot_area_y_max = cur_y_max - legend.indent; + + // Check for common axes + common_x_axes = common_y_axes = true; + int nzoom_series_show = 0; + for (var si = series.length - 1; si >=0; --si) { + var s = series[si]; + if (!s.zoom_show) continue; + ++nzoom_series_show; + if ( s.axis_x.position != series[0].axis_x.position + || s.axis_x.zoom_min != series[0].axis_x.zoom_min + || s.axis_x.zoom_max != series[0].axis_x.zoom_max + || s.place.zoom_x_low != series[0].place.zoom_x_low + || s.place.zoom_x_high != series[0].place.zoom_x_high + || s.axis_x.type != series[0].axis_x.type) + common_x_axes = false; + if ( s.axis_y.position != series[0].axis_y.position + || s.axis_y.zoom_min != series[0].axis_y.zoom_min + || s.axis_y.zoom_max != series[0].axis_y.zoom_max + || s.place.zoom_y_low != series[0].place.zoom_y_low + || s.place.zoom_y_high != series[0].place.zoom_y_high) + common_y_axes = false; + } + if (nzoom_series_show == 1) common_x_axes = common_y_axes = false; + + // Join and calc X-axes + for (var si = series.length - 1, nskip = 0; si >=0; --si) { + var s = series[si]; + if (!s.zoom_show) continue; + if (nskip != 0) {--nskip; continue;} + double max_rec_width = 0; double max_rec_height = 0; + calc_axis_rec_sizes (s.axis_x, out max_rec_width, out max_rec_height, true); + var max_font_indent = s.axis_x.font_indent; + var max_axis_font_height = s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent; + + // join relative x-axes with non-intersect places + for (int sj = si - 1; sj >= 0; --sj) { + var s2 = series[sj]; + if (!s2.zoom_show) continue; + bool has_intersection = false; + for (int sk = si; sk > sj; --sk) { + var s3 = series[sk]; + if (!s3.zoom_show) continue; + if (are_intersect(s2.place.zoom_x_low, s2.place.zoom_x_high, s3.place.zoom_x_low, s3.place.zoom_x_high) + || s2.axis_x.position != s3.axis_x.position + || s2.axis_x.type != s3.axis_x.type) { + has_intersection = true; + break; + } + } + if (!has_intersection) { + double tmp_max_rec_width = 0; double tmp_max_rec_height = 0; + calc_axis_rec_sizes (s2.axis_x, out tmp_max_rec_width, out tmp_max_rec_height, true); + max_rec_width = double.max (max_rec_width, tmp_max_rec_width); + max_rec_height = double.max (max_rec_height, tmp_max_rec_height); + max_font_indent = double.max (max_font_indent, s2.axis_x.font_indent); + max_axis_font_height = double.max (max_axis_font_height, s2.axis_x.title.text == "" ? 0 : + s2.axis_x.title.get_height(context) + s.axis_x.font_indent); + ++nskip; + } else { + break; + } + } + + // for 4.2. Cursor values for common X axis + if (common_x_axes && si == zoom_first_show && cursors_orientation == CursorOrientation.VERTICAL && cursors_crossings.length != 0) { + switch (s.axis_x.position) { + case Axis.Position.LOW: plot_area_y_max -= max_rec_height + s.axis_x.font_indent; break; + case Axis.Position.HIGH: plot_area_y_min += max_rec_height + s.axis_x.font_indent; break; + } + } + + if (!common_x_axes || si == zoom_first_show) + switch (s.axis_x.position) { + case Axis.Position.LOW: plot_area_y_max -= max_rec_height + max_font_indent + max_axis_font_height; break; + case Axis.Position.HIGH: plot_area_y_min += max_rec_height + max_font_indent + max_axis_font_height; break; + } + } + + // Join and calc Y-axes + for (var si = series.length - 1, nskip = 0; si >=0; --si) { + var s = series[si]; + if (!s.zoom_show) continue; + if (nskip != 0) {--nskip; continue;} + double max_rec_width = 0; double max_rec_height = 0; + calc_axis_rec_sizes (s.axis_y, out max_rec_width, out max_rec_height, false); + var max_font_indent = s.axis_y.font_indent; + var max_axis_font_width = s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent; + + // join relative x-axes with non-intersect places + for (int sj = si - 1; sj >= 0; --sj) { + var s2 = series[sj]; + if (!s2.zoom_show) continue; + bool has_intersection = false; + for (int sk = si; sk > sj; --sk) { + var s3 = series[sk]; + if (!s3.zoom_show) continue; + if (are_intersect(s2.place.zoom_y_low, s2.place.zoom_y_high, s3.place.zoom_y_low, s3.place.zoom_y_high) + || s2.axis_y.position != s3.axis_y.position + || s2.axis_x.type != s3.axis_x.type) { + has_intersection = true; + break; + } + } + if (!has_intersection) { + double tmp_max_rec_width = 0; double tmp_max_rec_height = 0; + calc_axis_rec_sizes (s2.axis_y, out tmp_max_rec_width, out tmp_max_rec_height, false); + max_rec_width = double.max (max_rec_width, tmp_max_rec_width); + max_rec_height = double.max (max_rec_height, tmp_max_rec_height); + max_font_indent = double.max (max_font_indent, s2.axis_y.font_indent); + max_axis_font_width = double.max (max_axis_font_width, s2.axis_y.title.text == "" ? 0 + : s2.axis_y.title.get_width(context) + s.axis_y.font_indent); + ++nskip; + } else { + break; + } + } + + // for 4.2. Cursor values for common Y axis + if (common_y_axes && si == zoom_first_show && cursors_orientation == CursorOrientation.HORIZONTAL && cursors_crossings.length != 0) { + switch (s.axis_y.position) { + case Axis.Position.LOW: plot_area_x_min += max_rec_width + s.axis_y.font_indent; break; + case Axis.Position.HIGH: plot_area_x_max -= max_rec_width + s.axis_y.font_indent; break; + } + } + + if (!common_y_axes || si == zoom_first_show) + switch (s.axis_y.position) { + case Axis.Position.LOW: plot_area_x_min += max_rec_width + max_font_indent + max_axis_font_width; break; + case Axis.Position.HIGH: plot_area_x_max -= max_rec_width + max_font_indent + max_axis_font_width; break; + } + } + } + + bool point_belong (Float128 p, Float128 a, Float128 b) { + if (a > b) { Float128 tmp = a; a = b; b = tmp; } + if (a <= p <= b) return true; + return false; + } + + protected virtual double compact_rec_x_pos (Series s, Float128 x, Text text) { + return get_scr_x(s, x) - text.get_width(context) / 2.0 - text.get_x_bearing(context) + - text.get_width(context) * (x - (s.axis_x.zoom_min + s.axis_x.zoom_max) / 2.0) / (s.axis_x.zoom_max - s.axis_x.zoom_min); + } + + protected virtual double compact_rec_y_pos (Series s, Float128 y, Text text) { + return get_scr_y(s, y) + text.get_height(context) / 2.0 + + text.get_height(context) * (y - (s.axis_y.zoom_min + s.axis_y.zoom_max) / 2.0) / (s.axis_y.zoom_max - s.axis_y.zoom_min); + } + + protected virtual void format_date_time (Axis axis, Float128 x, out string date, out string time) { + date = time = ""; + var dt = new DateTime.from_unix_utc((int64)x); + date = dt.format(axis.date_format); + var dsec_str = + ("%."+(axis.dsec_signs.to_string())+"Lf").printf((LongDouble)(x - (int64)x)).offset(1); + time = dt.format(axis.time_format) + dsec_str; + } + + protected virtual void draw_horizontal_axis () { + for (var si = series.length - 1, nskip = 0; si >=0; --si) { + var s = series[si]; + if (!s.zoom_show) continue; + if (common_x_axes && si != zoom_first_show) continue; + + // 1. Detect max record width/height by axis_rec_npoints equally selected points using format. + double max_rec_width, max_rec_height; + calc_axis_rec_sizes (s.axis_x, out max_rec_width, out max_rec_height, true); + + // 2. Calculate maximal available number of records, take into account the space width. + long max_nrecs = (long) ((plot_area_x_max - plot_area_x_min) * (s.place.zoom_x_high - s.place.zoom_x_low) / max_rec_width); + + // 3. Calculate grid step. + Float128 step = calc_round_step ((s.axis_x.zoom_max - s.axis_x.zoom_min) / max_nrecs, s.axis_x.type == Axis.Type.DATE_TIME); + if (step > s.axis_x.zoom_max - s.axis_x.zoom_min) + step = s.axis_x.zoom_max - s.axis_x.zoom_min; + + // 4. Calculate x_min (s.axis_x.zoom_min / step, round, multiply on step, add step if < s.axis_x.zoom_min). + Float128 x_min = 0.0; + if (step >= 1) { + int64 x_min_nsteps = (int64) (s.axis_x.zoom_min / step); + x_min = x_min_nsteps * step; + } else { + int64 round_axis_x_min = (int64)s.axis_x.zoom_min; + int64 x_min_nsteps = (int64) ((s.axis_x.zoom_min - round_axis_x_min) / step); + x_min = round_axis_x_min + x_min_nsteps * step; + } + if (x_min < s.axis_x.zoom_min) x_min += step; + + // 4.2. Cursor values for common X axis + if (common_x_axes && cursors_orientation == CursorOrientation.VERTICAL && cursors_crossings.length != 0) { + switch (s.axis_x.position) { + case Axis.Position.LOW: cur_y_max -= max_rec_height + s.axis_x.font_indent; break; + case Axis.Position.HIGH: cur_y_min += max_rec_height + s.axis_x.font_indent; break; + } + } + + // 4.5. Draw Axis title + if (s.axis_x.title.text != "") { + var scr_x = plot_area_x_min + (plot_area_x_max - plot_area_x_min) * (s.place.zoom_x_low + s.place.zoom_x_high) / 2.0; + double scr_y = 0.0; + switch (s.axis_x.position) { + case Axis.Position.LOW: scr_y = cur_y_max - s.axis_x.font_indent; break; + case Axis.Position.HIGH: scr_y = cur_y_min + s.axis_x.font_indent + s.axis_x.title.get_height(context); break; + } + context.move_to(scr_x - s.axis_x.title.get_width(context) / 2.0, scr_y); + set_source_rgba(s.axis_x.color); + if (common_x_axes) set_source_rgba(common_axis_color); + show_text(s.axis_x.title); + } + + // 5. Draw records, update cur_{x,y}_{min,max}. + for (Float128 x = x_min, x_max = s.axis_x.zoom_max; point_belong (x, x_min, x_max); x += step) { + if (common_x_axes) set_source_rgba(common_axis_color); + else set_source_rgba(s.axis_x.color); + string text = "", time_text = ""; + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: + text = s.axis_x.format.printf((LongDouble)x); + break; + case Axis.Type.DATE_TIME: + format_date_time(s.axis_x, x, out text, out time_text); + break; + } + var scr_x = get_scr_x (s, x); + var text_t = new Text(text, s.axis_x.font_style, s.axis_x.color); + switch (s.axis_x.position) { + case Axis.Position.LOW: + var print_y = cur_y_max - s.axis_x.font_indent - (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent); + var print_x = compact_rec_x_pos (s, x, text_t); + context.move_to (print_x, print_y); + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: + show_text(text_t); + break; + case Axis.Type.DATE_TIME: + if (s.axis_x.date_format != "") show_text(text_t); + var time_text_t = new Text(time_text, s.axis_x.font_style, s.axis_x.color); + print_x = compact_rec_x_pos (s, x, time_text_t); + context.move_to (print_x, print_y - (s.axis_x.date_format == "" ? 0 : text_t.get_height(context) + s.axis_x.font_indent)); + if (s.axis_x.time_format != "") show_text(time_text_t); + break; + } + // 6. Draw grid lines to the s.place.zoom_y_low. + var line_style = s.grid.line_style; + if (common_x_axes) line_style.color = Color(0, 0, 0, 0.5); + set_line_style(line_style); + double y = cur_y_max - max_rec_height - s.axis_x.font_indent - (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent); + context.move_to (scr_x, y); + if (common_x_axes) + context.line_to (scr_x, plot_area_y_min); + else + context.line_to (scr_x, double.min (y, plot_area_y_max - (plot_area_y_max - plot_area_y_min) * s.place.zoom_y_high)); + break; + case Axis.Position.HIGH: + var print_y = cur_y_min + max_rec_height + s.axis_x.font_indent + (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent); + var print_x = compact_rec_x_pos (s, x, text_t); + context.move_to (print_x, print_y); + + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: + show_text(text_t); + break; + case Axis.Type.DATE_TIME: + if (s.axis_x.date_format != "") show_text(text_t); + var time_text_t = new Text(time_text, s.axis_x.font_style, s.axis_x.color); + print_x = compact_rec_x_pos (s, x, time_text_t); + context.move_to (print_x, print_y - (s.axis_x.date_format == "" ? 0 : text_t.get_height(context) + s.axis_x.font_indent)); + if (s.axis_x.time_format != "") show_text(time_text_t); + break; + } + // 6. Draw grid lines to the s.place.zoom_y_high. + var line_style = s.grid.line_style; + if (common_x_axes) line_style.color = Color(0, 0, 0, 0.5); + set_line_style(line_style); + double y = cur_y_min + max_rec_height + s.axis_x.font_indent + (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent); + context.move_to (scr_x, y); + if (common_x_axes) + context.line_to (scr_x, plot_area_y_max); + else + context.line_to (scr_x, double.max (y, plot_area_y_max - (plot_area_y_max - plot_area_y_min) * s.place.zoom_y_low)); + break; + } + context.stroke (); + } + + // join relative x-axes with non-intersect places + for (int sj = si - 1; sj >= 0; --sj) { + var s2 = series[sj]; + if (!s2.zoom_show) continue; + bool has_intersection = false; + for (int sk = si; sk > sj; --sk) { + var s3 = series[sk]; + if (!s3.zoom_show) continue; + if (are_intersect(s2.place.zoom_x_low, s2.place.zoom_x_high, s3.place.zoom_x_low, s3.place.zoom_x_high) + || s2.axis_x.position != s3.axis_x.position + || s2.axis_x.type != s3.axis_x.type) { + has_intersection = true; + break; + } + } + if (!has_intersection) { + ++nskip; + } else { + break; + } + } + + if (nskip != 0) {--nskip; continue;} + + switch (s.axis_x.position) { + case Axis.Position.LOW: + cur_y_max -= max_rec_height + s.axis_x.font_indent + + (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent); + break; + case Axis.Position.HIGH: + cur_y_min += max_rec_height + s.axis_x.font_indent + + (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent); + break; + } + } + } + + protected virtual void draw_vertical_axis () { + for (var si = series.length - 1, nskip = 0; si >=0; --si) { + var s = series[si]; + if (!s.zoom_show) continue; + if (common_y_axes && si != zoom_first_show) continue; + // 1. Detect max record width/height by axis_rec_npoints equally selected points using format. + double max_rec_width, max_rec_height; + calc_axis_rec_sizes (s.axis_y, out max_rec_width, out max_rec_height, false); + + // 2. Calculate maximal available number of records, take into account the space width. + long max_nrecs = (long) ((plot_area_y_max - plot_area_y_min) * (s.place.zoom_y_high - s.place.zoom_y_low) / max_rec_height); + + // 3. Calculate grid step. + Float128 step = calc_round_step ((s.axis_y.zoom_max - s.axis_y.zoom_min) / max_nrecs); + if (step > s.axis_y.zoom_max - s.axis_y.zoom_min) + step = s.axis_y.zoom_max - s.axis_y.zoom_min; + + // 4. Calculate y_min (s.axis_y.zoom_min / step, round, multiply on step, add step if < s.axis_y.zoom_min). + Float128 y_min = 0.0; + if (step >= 1) { + int64 y_min_nsteps = (int64) (s.axis_y.zoom_min / step); + y_min = y_min_nsteps * step; + } else { + int64 round_axis_y_min = (int64)s.axis_y.zoom_min; + int64 y_min_nsteps = (int64) ((s.axis_y.zoom_min - round_axis_y_min) / step); + y_min = round_axis_y_min + y_min_nsteps * step; + } + if (y_min < s.axis_y.zoom_min) y_min += step; + + // 4.2. Cursor values for common Y axis + if (common_y_axes && cursors_orientation == CursorOrientation.HORIZONTAL && cursors_crossings.length != 0) { + switch (s.axis_y.position) { + case Axis.Position.LOW: cur_x_min += max_rec_width + s.axis_y.font_indent; break; + case Axis.Position.HIGH: cur_x_max -= max_rec_width + s.axis_y.font_indent; break; + } + } + + // 4.5. Draw Axis title + if (s.axis_y.title.text != "") { + var scr_y = plot_area_y_max - (plot_area_y_max - plot_area_y_min) * (s.place.zoom_y_low + s.place.zoom_y_high) / 2.0; + switch (s.axis_y.position) { + case Axis.Position.LOW: + var scr_x = cur_x_min + s.axis_y.font_indent + s.axis_y.title.get_width(context); + context.move_to(scr_x, scr_y + s.axis_y.title.get_height(context) / 2.0); + break; + case Axis.Position.HIGH: + var scr_x = cur_x_max - s.axis_y.font_indent; + context.move_to(scr_x, scr_y + s.axis_y.title.get_height(context) / 2.0); + break; + } + set_source_rgba(s.axis_y.color); + if (common_y_axes) set_source_rgba(common_axis_color); + show_text(s.axis_y.title); + } + + // 5. Draw records, update cur_{x,y}_{min,max}. + for (Float128 y = y_min, y_max = s.axis_y.zoom_max; point_belong (y, y_min, y_max); y += step) { + if (common_y_axes) set_source_rgba(common_axis_color); + else set_source_rgba(s.axis_y.color); + var text = s.axis_y.format.printf((LongDouble)y); + var scr_y = get_scr_y (s, y); + var text_t = new Text(text, s.axis_y.font_style, s.axis_y.color); + switch (s.axis_y.position) { + case Axis.Position.LOW: + context.move_to (cur_x_min + max_rec_width - text_t.get_width(context) + s.axis_y.font_indent - text_t.get_x_bearing(context) + + (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent), + compact_rec_y_pos (s, y, text_t)); + show_text(text_t); + // 6. Draw grid lines to the s.place.zoom_x_low. + var line_style = s.grid.line_style; + if (common_y_axes) line_style.color = Color(0, 0, 0, 0.5); + set_line_style(line_style); + double x = cur_x_min + max_rec_width + s.axis_y.font_indent + (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent); + context.move_to (x, scr_y); + if (common_y_axes) + context.line_to (plot_area_x_max, scr_y); + else + context.line_to (double.max (x, plot_area_x_min + (plot_area_x_max - plot_area_x_min) * s.place.zoom_x_high), scr_y); + break; + case Axis.Position.HIGH: + context.move_to (cur_x_max - text_t.get_width(context) - s.axis_y.font_indent - text_t.get_x_bearing(context) + - (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent), + compact_rec_y_pos (s, y, text_t)); + show_text(text_t); + // 6. Draw grid lines to the s.place.zoom_x_high. + var line_style = s.grid.line_style; + if (common_y_axes) line_style.color = Color(0, 0, 0, 0.5); + set_line_style(line_style); + double x = cur_x_max - max_rec_width - s.axis_y.font_indent - (s.axis_y.title.text == "" ? 0 :s.axis_y.title.get_width(context) + s.axis_y.font_indent); + context.move_to (x, scr_y); + if (common_y_axes) + context.line_to (plot_area_x_min, scr_y); + else + context.line_to (double.min (x, plot_area_x_min + (plot_area_x_max - plot_area_x_min) * s.place.zoom_x_low), scr_y); + break; + } + context.stroke (); + } + + // join relative x-axes with non-intersect places + for (int sj = si - 1; sj >= 0; --sj) { + var s2 = series[sj]; + if (!s2.zoom_show) continue; + bool has_intersection = false; + for (int sk = si; sk > sj; --sk) { + var s3 = series[sk]; + if (!s3.zoom_show) continue; + if (are_intersect(s2.place.zoom_y_low, s2.place.zoom_y_high, s3.place.zoom_y_low, s3.place.zoom_y_high) + || s2.axis_y.position != s3.axis_y.position) { + has_intersection = true; + break; + } + } + if (!has_intersection) { + ++nskip; + } else { + break; + } + } + + if (nskip != 0) {--nskip; continue;} + + switch (s.axis_y.position) { + case Axis.Position.LOW: + cur_x_min += max_rec_width + s.axis_y.font_indent + + (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent); break; + case Axis.Position.HIGH: + cur_x_max -= max_rec_width + s.axis_y.font_indent + + (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent); break; + } + } + } + + protected virtual void draw_plot_area_border () { + set_source_rgba (border_color); + context.set_dash(null, 0); + context.move_to (plot_area_x_min, plot_area_y_min); + context.line_to (plot_area_x_min, plot_area_y_max); + context.line_to (plot_area_x_max, plot_area_y_max); + context.line_to (plot_area_x_max, plot_area_y_min); + context.line_to (plot_area_x_min, plot_area_y_min); + context.stroke (); + } + + protected virtual double get_scr_x (Series s, Float128 x) { + return plot_area_x_min + (plot_area_x_max - plot_area_x_min) * (s.place.zoom_x_low + (x - s.axis_x.zoom_min) + / (s.axis_x.zoom_max - s.axis_x.zoom_min) * (s.place.zoom_x_high - s.place.zoom_x_low)); + } + + protected virtual double get_scr_y (Series s, Float128 y) { + return plot_area_y_max - (plot_area_y_max - plot_area_y_min) * (s.place.zoom_y_low + (y - s.axis_y.zoom_min) + / (s.axis_y.zoom_max - s.axis_y.zoom_min) * (s.place.zoom_y_high - s.place.zoom_y_low)); + } + protected virtual Point get_scr_point (Series s, Point p) { + return Point (get_scr_x(s, p.x), get_scr_y(s, p.y)); + } + + protected virtual Float128 get_real_x (Series s, double scr_x) { + return s.axis_x.zoom_min + ((scr_x - plot_area_x_min) / (plot_area_x_max - plot_area_x_min) - s.place.zoom_x_low) + * (s.axis_x.zoom_max - s.axis_x.zoom_min) / (s.place.zoom_x_high - s.place.zoom_x_low); + } + protected virtual Float128 get_real_y (Series s, double scr_y) { + return s.axis_y.zoom_min + ((plot_area_y_max - scr_y) / (plot_area_y_max - plot_area_y_min) - s.place.zoom_y_low) + * (s.axis_y.zoom_max - s.axis_y.zoom_min) / (s.place.zoom_y_high - s.place.zoom_y_low); + } + protected virtual Point get_real_point (Series s, Point p) { + return Point (get_real_x(s, p.x), get_real_y(s, p.y)); + } + + protected virtual bool x_in_range (double x, double x0, double x1) { + if (x0 <= x <= x1 || x1 <= x <= x0) + return true; + return false; + } + + protected virtual bool y_in_range (double y, double y0, double y1) { + if (y0 <= y <= y1 || y1 <= y <= y0) + return true; + return false; + } + + protected virtual bool x_in_plot_area (double x) { + if (x_in_range(x, plot_area_x_min, plot_area_x_max)) + return true; + return false; + } + + protected virtual bool y_in_plot_area (double y) { + if (y_in_range(y, plot_area_y_min, plot_area_y_max)) + return true; + return false; + } + + protected virtual bool point_in_rect (Point p, double x0, double x1, double y0, double y1) { + if (x_in_range(p.x, x0, x1) && y_in_range(p.y, y0, y1)) + return true; + return false; + } + + protected virtual bool point_in_plot_area (Point p) { + if (point_in_rect (p, plot_area_x_min, plot_area_x_max, plot_area_y_min, plot_area_y_max)) + return true; + return false; + } + + protected virtual bool hcross (Point a1, Point a2, Float128 h_x1, Float128 h_x2, Float128 h_y, out Float128 x) { + x = 0; + if (a1.y == a2.y) return false; + if (a1.y >= h_y && a2.y >= h_y || a1.y <= h_y && a2.y <= h_y) return false; + x = a1.x + (a2.x - a1.x) * (h_y - a1.y) / (a2.y - a1.y); + if (h_x1 <= x <= h_x2 || h_x2 <= x <= h_x1) + return true; + return false; + } + + protected virtual bool vcross (Point a1, Point a2, Float128 v_x, Float128 v_y1, Float128 v_y2, out Float128 y) { + y = 0; + if (a1.x == a2.x) return false; + if (a1.x >= v_x && a2.x >= v_x || a1.x <= v_x && a2.x <= v_x) return false; + y = a1.y + (a2.y - a1.y) * (v_x - a1.x) / (a2.x - a1.x); + if (v_y1 <= y <= v_y2 || v_y2 <= y <= v_y1) + return true; + return false; + } + + delegate int PointComparator(Point a, Point b); + void sort_points_delegate(Point[] points, PointComparator compare) { + for(var i = 0; i < points.length; ++i) { + for(var j = i + 1; j < points.length; ++j) { + if(compare(points[i], points[j]) > 0) { + var tmp = points[i]; + points[i] = points[j]; + points[j] = tmp; + } + } + } + } + + protected virtual bool cut_line (Point a, Point b, out Point c, out Point d) { + int ncross = 0; + Float128 x = 0, y = 0; + Point pc[4]; + if (hcross(a, b, plot_area_x_min, plot_area_x_max, plot_area_y_min, out x)) + pc[ncross++] = Point(x, plot_area_y_min); + if (hcross(a, b, plot_area_x_min, plot_area_x_max, plot_area_y_max, out x)) + pc[ncross++] = Point(x, plot_area_y_max); + if (vcross(a, b, plot_area_x_min, plot_area_y_min, plot_area_y_max, out y)) + pc[ncross++] = Point(plot_area_x_min, y); + if (vcross(a, b, plot_area_x_max, plot_area_y_min, plot_area_y_max, out y)) + pc[ncross++] = Point(plot_area_x_max, y); + c = a; + d = b; + if (ncross == 0) { + if (point_in_plot_area (a) && point_in_plot_area (b)) + return true; + return false; + } + if (ncross >= 2) { + c = pc[0]; d = pc[1]; + return true; + } + if (ncross == 1) { + if (point_in_plot_area (a)) { + c = a; + d = pc[0]; + return true; + } else if (point_in_plot_area (b)) { + c = b; + d = pc[0]; + return true; + } + } + return false; + } + + protected virtual Point[] sort_points (Series s, Series.Sort sort) { + var points = s.points; + switch(sort) { + case Series.Sort.BY_X: + sort_points_delegate(points, (a, b) => { + if (a.x < b.x) return -1; + if (a.x > b.x) return 1; + return 0; + }); + break; + case Series.Sort.BY_Y: + sort_points_delegate(points, (a, b) => { + if (a.y < b.y) return -1; + if (a.y > b.y) return 1; + return 0; + }); + break; + } + return points; + } + + protected virtual void draw_series () { + for (var si = 0; si < series.length; ++si) { + var s = series[si]; + if (!s.zoom_show) continue; + if (s.points.length == 0) continue; + var points = sort_points(s, s.sort); + set_line_style(s.line_style); + // draw series line + for (int i = 1; i < points.length; ++i) { + Point c, d; + if (cut_line (Point(get_scr_x(s, points[i - 1].x), get_scr_y(s, points[i - 1].y)), + Point(get_scr_x(s, points[i].x), get_scr_y(s, points[i].y)), + out c, out d)) { + context.move_to (c.x, c.y); + context.line_to (d.x, d.y); + } + } + context.stroke(); + for (int i = 0; i < points.length; ++i) { + var x = get_scr_x(s, points[i].x); + var y = get_scr_y(s, points[i].y); + if (point_in_plot_area (Point (x, y))) + draw_marker_at_pos(s.marker_type, x, y); + } + } + } + + protected List cursors = new List (); + protected Point active_cursor = Point (); + protected bool is_cursor_active = false; + + public virtual void set_active_cursor (double x, double y, bool remove = false) { + active_cursor = Point (scr2rel_x(x), scr2rel_y(y)); + is_cursor_active = ! remove; + } + + public virtual void add_active_cursor () { + cursors.append (active_cursor); + is_cursor_active = false; + } + + public enum CursorOrientation { + VERTICAL = 0, // default + HORIZONTAL + } + + public CursorOrientation cursors_orientation = CursorOrientation.VERTICAL; + + public double cursor_max_rm_distance = 32; + + public virtual void remove_active_cursor () { + if (cursors.length() == 0) return; + var distance = width * width; + uint rm_indx = 0; + uint i = 0; + foreach (var c in cursors) { + double d = distance; + switch (cursors_orientation) { + case CursorOrientation.VERTICAL: + d = (rel2scr_x(c.x) - rel2scr_x(active_cursor.x)).abs(); + break; + case CursorOrientation.HORIZONTAL: + d = (rel2scr_y(c.y) - rel2scr_y(active_cursor.y)).abs(); + break; + } + if (d < distance) { + distance = d; + rm_indx = i; + } + ++i; + } + if (distance < cursor_max_rm_distance) + cursors.delete_link(cursors.nth(rm_indx)); + is_cursor_active = false; + } + + protected virtual Float128 scr2rel_x (Float128 x) { + return rel_zoom_x_min + (x - plot_area_x_min) / (plot_area_x_max - plot_area_x_min) * (rel_zoom_x_max - rel_zoom_x_min); + } + protected virtual Float128 scr2rel_y (Float128 y) { + return rel_zoom_y_max - (plot_area_y_max - y) / (plot_area_y_max - plot_area_y_min) * (rel_zoom_y_max - rel_zoom_y_min); + } + protected virtual Point scr2rel_point (Point p) { + return Point (scr2rel_x(p.x), scr2rel_y(p.y)); + } + + protected virtual Float128 rel2scr_x(Float128 x) { + return plot_area_x_min + (plot_area_x_max - plot_area_x_min) * (x - rel_zoom_x_min) / (rel_zoom_x_max - rel_zoom_x_min); + } + + protected virtual Float128 rel2scr_y(Float128 y) { + return plot_area_y_min + (plot_area_y_max - plot_area_y_min) * (y - rel_zoom_y_min) / (rel_zoom_y_max - rel_zoom_y_min); + } + + protected virtual Point rel2scr_point (Point p) { + return Point (rel2scr_x(p.x), rel2scr_y(p.y)); + } + + public LineStyle cursor_line_style = LineStyle(Color(0.2, 0.2, 0.2, 0.8)); + + protected struct CursorCross { + uint series_index; + Point point; + Point size; + bool show_x; + bool show_date; + bool show_time; + bool show_y; + Point scr_point; + Point scr_value_point; + } + protected struct CursorCrossings { + uint cursor_index; + CursorCross[] crossings; + } + + protected CursorCrossings[] cursors_crossings = {}; + + protected List get_all_cursors () { + var all_cursors = cursors.copy_deep ((src) => { return src; }); + if (is_cursor_active) + all_cursors.append(active_cursor); + return all_cursors; + } + + protected void get_cursors_crossings () { + var all_cursors = get_all_cursors(); + + CursorCrossings[] local_cursor_crossings = {}; + + for (var ci = 0, max_ci = all_cursors.length(); ci < max_ci; ++ci) { + var c = all_cursors.nth_data(ci); + switch (cursors_orientation) { + case CursorOrientation.VERTICAL: + if (c.x <= rel_zoom_x_min || c.x >= rel_zoom_x_max) continue; break; + case CursorOrientation.HORIZONTAL: + if (c.y <= rel_zoom_y_min || c.y >= rel_zoom_y_max) continue; break; + } + + CursorCross[] crossings = {}; + for (var si = 0, max_si = series.length; si < max_si; ++si) { + var s = series[si]; + if (!s.zoom_show) continue; + + Point[] points = {}; + switch (cursors_orientation) { + case CursorOrientation.VERTICAL: + points = sort_points (s, s.sort); + break; + case CursorOrientation.HORIZONTAL: + points = sort_points (s, s.sort); + break; + } + + for (var i = 0; i + 1 < points.length; ++i) { + switch (cursors_orientation) { + case CursorOrientation.VERTICAL: + Float128 y = 0.0; + if (vcross(get_scr_point(s, points[i]), get_scr_point(s, points[i+1]), rel2scr_x(c.x), + plot_area_y_min, plot_area_y_max, out y)) { + var point = Point(get_real_x(s, rel2scr_x(c.x)), get_real_y(s, y)); + Point size; bool show_x, show_date, show_time, show_y; + cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y); + calc_cross_sizes (s, point, out size, show_x, show_time, show_date, show_y); + CursorCross cc = {si, point, size, show_x, show_date, show_time, show_y}; + crossings += cc; + } + break; + case CursorOrientation.HORIZONTAL: + Float128 x = 0.0; + if (hcross(get_scr_point(s, points[i]), get_scr_point(s, points[i+1]), + plot_area_x_min, plot_area_x_max, rel2scr_y(c.y), out x)) { + var point = Point(get_real_x(s, x), get_real_y(s, rel2scr_y(c.y))); + Point size; bool show_x, show_date, show_time, show_y; + cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y); + calc_cross_sizes (s, point, out size, show_x, show_time, show_date, show_y); + CursorCross cc = {si, point, size, show_x, show_date, show_time, show_y}; + crossings += cc; + } + break; + } + } + } + if (crossings.length != 0) { + CursorCrossings ccs = {ci, crossings}; + local_cursor_crossings += ccs; + } + } + cursors_crossings = local_cursor_crossings; + } + + protected virtual void calc_cursors_value_positions () { + for (var ccsi = 0, max_ccsi = cursors_crossings.length; ccsi < max_ccsi; ++ccsi) { + for (var cci = 0, max_cci = cursors_crossings[ccsi].crossings.length; cci < max_cci; ++cci) { + // TODO: Ticket #142: find smart algorithm of cursors values placements + unowned CursorCross[] cr = cursors_crossings[ccsi].crossings; + cr[cci].scr_point = get_scr_point (series[cr[cci].series_index], cr[cci].point); + var d_max = double.max (cr[cci].size.x / 1.5, cr[cci].size.y / 1.5); + cr[cci].scr_value_point = Point (cr[cci].scr_point.x + d_max, cr[cci].scr_point.y - d_max); + } + } + } + + protected virtual void cross_what_to_show (Series s, out bool show_x, out bool show_time, + out bool show_date, out bool show_y) { + show_x = show_time = show_date = show_y = false; + switch (cursors_orientation) { + case CursorOrientation.VERTICAL: + show_y = true; + if (!common_x_axes) + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: show_x = true; break; + case Axis.Type.DATE_TIME: + if (s.axis_x.date_format != "") show_date = true; + if (s.axis_x.time_format != "") show_time = true; + break; + } + break; + case CursorOrientation.HORIZONTAL: + if (!common_y_axes) show_y = true; + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: show_x = true; break; + case Axis.Type.DATE_TIME: + if (s.axis_x.date_format != "") show_date = true; + if (s.axis_x.time_format != "") show_time = true; + break; + } + break; + } + } + + protected virtual void calc_cross_sizes (Series s, Point p, out Point size, + bool show_x = false, bool show_time = false, + bool show_date = false, bool show_y = false) { + if (show_x == show_time == show_date == show_y == false) + cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y); + size = Point (); + string date, time; + format_date_time(s.axis_x, p.x, out date, out time); + var date_t = new Text (date, s.axis_x.font_style, s.axis_x.color); + var time_t = new Text (time, s.axis_x.font_style, s.axis_x.color); + var x_t = new Text (s.axis_x.format.printf((LongDouble)p.x), s.axis_x.font_style, s.axis_x.color); + var y_t = new Text (s.axis_y.format.printf((LongDouble)p.y), s.axis_y.font_style, s.axis_y.color); + double h_x = 0.0, h_y = 0.0; + if (show_x) { size.x = x_t.get_width(context); h_x = x_t.get_height(context); } + if (show_date) { size.x = date_t.get_width(context); h_x = date_t.get_height(context); } + if (show_time) { size.x = double.max(size.x, time_t.get_width(context)); h_x += time_t.get_height(context); } + if (show_y) { size.x += y_t.get_width(context); h_y = y_t.get_height(context); } + if ((show_x || show_date || show_time) && show_y) size.x += double.max(s.axis_x.font_indent, s.axis_y.font_indent); + if (show_date && show_time) h_x += s.axis_x.font_indent; + size.y = double.max (h_x, h_y); + } + + protected virtual void draw_cursors () { + if (series.length == 0) return; + + var all_cursors = get_all_cursors(); + calc_cursors_value_positions(); + + for (var cci = 0, max_cci = cursors_crossings.length; cci < max_cci; ++cci) { + var low = Point(plot_area_x_max, plot_area_y_max); // low and high + var high = Point(plot_area_x_min, plot_area_y_min); // points of the cursor + unowned CursorCross[] ccs = cursors_crossings[cci].crossings; + for (var ci = 0, max_ci = ccs.length; ci < max_ci; ++ci) { + var si = ccs[ci].series_index; + var s = series[si]; + var p = ccs[ci].point; + var scrx = get_scr_x(s, p.x); + var scry = get_scr_y(s, p.y); + if (scrx < low.x) low.x = scrx; + if (scry < low.y) low.y = scry; + if (scrx > high.x) high.x = scrx; + if (scry > high.y) high.y = scry; + + if (common_x_axes) { + switch (s.axis_x.position) { + case Axis.Position.LOW: high.y = plot_area_y_max + s.axis_x.font_indent; break; + case Axis.Position.HIGH: low.y = plot_area_y_min - s.axis_x.font_indent; break; + case Axis.Position.BOTH: + high.y = plot_area_y_max + s.axis_x.font_indent; + low.y = plot_area_y_min - s.axis_x.font_indent; + break; + } + } + if (common_y_axes) { + switch (s.axis_y.position) { + case Axis.Position.LOW: low.x = plot_area_x_min - s.axis_y.font_indent; break; + case Axis.Position.HIGH: high.x = plot_area_x_max + s.axis_y.font_indent; break; + case Axis.Position.BOTH: + low.x = plot_area_x_min - s.axis_y.font_indent; + high.x = plot_area_x_max + s.axis_y.font_indent; + break; + } + } + + set_line_style(cursor_line_style); + context.move_to (ccs[ci].scr_point.x, ccs[ci].scr_point.y); + context.line_to (ccs[ci].scr_value_point.x, ccs[ci].scr_value_point.y); + context.stroke (); + } + + var c = all_cursors.nth_data(cursors_crossings[cci].cursor_index); + + switch (cursors_orientation) { + case CursorOrientation.VERTICAL: + if (low.y > high.y) continue; + set_line_style(cursor_line_style); + context.move_to (rel2scr_x(c.x), low.y); + context.line_to (rel2scr_x(c.x), high.y); + context.stroke(); + + // show common X value + if (common_x_axes) { + var s = series[zoom_first_show]; + var x = get_real_x(s, rel2scr_x(c.x)); + string text = "", time_text = ""; + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: + text = s.axis_x.format.printf((LongDouble)x); + break; + case Axis.Type.DATE_TIME: + format_date_time(s.axis_x, x, out text, out time_text); + break; + default: + break; + } + var text_t = new Text(text, s.axis_x.font_style, s.axis_x.color); + var time_text_t = new Text(time_text, s.axis_x.font_style, s.axis_x.color); + var print_y = 0.0; + switch (s.axis_x.position) { + case Axis.Position.LOW: print_y = y_min + height - s.axis_x.font_indent + - (legend.position == Legend.Position.BOTTOM ? legend_height : 0); + break; + case Axis.Position.HIGH: print_y = y_min + title_height + s.axis_x.font_indent + + (legend.position == Legend.Position.TOP ? legend_height : 0); + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: + print_y += text_t.get_height(context); + break; + case Axis.Type.DATE_TIME: + print_y += (s.axis_x.date_format == "" ? 0 : text_t.get_height(context)) + + (s.axis_x.time_format == "" ? 0 : time_text_t.get_height(context)) + + (s.axis_x.date_format == "" || s.axis_x.time_format == "" ? 0 : s.axis_x.font_indent); + break; + } + break; + } + var print_x = compact_rec_x_pos (s, x, text_t); + context.move_to (print_x, print_y); + + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: + show_text(text_t); + break; + case Axis.Type.DATE_TIME: + if (s.axis_x.date_format != "") show_text(text_t); + print_x = compact_rec_x_pos (s, x, time_text_t); + context.move_to (print_x, print_y - (s.axis_x.date_format == "" ? 0 : text_t.get_height(context) + s.axis_x.font_indent)); + if (s.axis_x.time_format != "") show_text(time_text_t); + break; + } + + context.stroke (); + } + break; + case CursorOrientation.HORIZONTAL: + if (low.x > high.x) continue; + set_line_style(cursor_line_style); + context.move_to (low.x, rel2scr_y(c.y)); + context.line_to (high.x, rel2scr_y(c.y)); + context.stroke(); + + // show common Y value + if (common_y_axes) { + var s = series[zoom_first_show]; + var y = get_real_y(s, rel2scr_y(c.y)); + var text_t = new Text(s.axis_y.format.printf((LongDouble)y, s.axis_y.font_style)); + var print_y = compact_rec_y_pos (s, y, text_t); + var print_x = 0.0; + switch (s.axis_y.position) { + case Axis.Position.LOW: + print_x = x_min + s.axis_y.font_indent + + (legend.position == Legend.Position.LEFT ? legend_width : 0); + break; + case Axis.Position.HIGH: + print_x = x_min + width - text_t.get_width(context) - s.axis_y.font_indent + - (legend.position == Legend.Position.RIGHT ? legend_width : 0); + break; + } + context.move_to (print_x, print_y); + show_text(text_t); + + context.stroke (); + } + break; + } + + // show value (X, Y or [X;Y]) + for (var ci = 0, max_ci = ccs.length; ci < max_ci; ++ci) { + var si = ccs[ci].series_index; + var s = series[si]; + var point = ccs[ci].point; + var size = ccs[ci].size; + var svp = ccs[ci].scr_value_point; + var show_x = ccs[ci].show_x; + var show_date = ccs[ci].show_date; + var show_time = ccs[ci].show_time; + var show_y = ccs[ci].show_y; + + set_source_rgba(bg_color); + context.rectangle (svp.x - size.x / 2, svp.y - size.y / 2, size.x, size.y); + context.fill(); + + if (show_x) { + set_source_rgba(s.axis_x.color); + var text_t = new Text(s.axis_x.format.printf((LongDouble)point.x), s.axis_x.font_style); + context.move_to (svp.x - size.x / 2, svp.y + text_t.get_height(context) / 2); + if (common_x_axes) set_source_rgba (common_axis_color); + show_text(text_t); + context.stroke(); + } + + if (show_time) { + set_source_rgba(s.axis_x.color); + string date = "", time = ""; + format_date_time(s.axis_x, point.x, out date, out time); + var text_t = new Text(time, s.axis_x.font_style); + var y = svp.y + text_t.get_height(context) / 2; + if (show_date) y -= text_t.get_height(context) / 2 + s.axis_x.font_indent / 2; + context.move_to (svp.x - size.x / 2, y); + if (common_x_axes) set_source_rgba (common_axis_color); + show_text(text_t); + context.stroke(); + } + + if (show_date) { + set_source_rgba(s.axis_x.color); + string date = "", time = ""; + format_date_time(s.axis_x, point.x, out date, out time); + var text_t = new Text(date, s.axis_x.font_style); + var y = svp.y + text_t.get_height(context) / 2; + if (show_time) y += text_t.get_height(context) / 2 + s.axis_x.font_indent / 2; + context.move_to (svp.x - size.x / 2, y); + if (common_x_axes) set_source_rgba (common_axis_color); + show_text(text_t); + context.stroke(); + } + + if (show_y) { + set_source_rgba(s.axis_y.color); + var text_t = new Text(s.axis_y.format.printf((LongDouble)point.y), s.axis_y.font_style); + context.move_to (svp.x + size.x / 2 - text_t.get_width(context), svp.y + text_t.get_height(context) / 2); + if (common_y_axes) set_source_rgba (common_axis_color); + show_text(text_t); + context.stroke(); + } + } + } + } + + public bool get_cursors_delta (out Float128 delta) { + delta = 0.0; + if (series.length == 0) return false; + if (cursors.length() + (is_cursor_active ? 1 : 0) != 2) return false; + if (common_x_axes && cursors_orientation == CursorOrientation.VERTICAL) { + Float128 val1 = get_real_x (series[zoom_first_show], rel2scr_x(cursors.nth_data(0).x)); + Float128 val2 = 0; + if (is_cursor_active) + val2 = get_real_x (series[zoom_first_show], rel2scr_x(active_cursor.x)); + else + val2 = get_real_x (series[zoom_first_show], rel2scr_x(cursors.nth_data(1).x)); + if (val2 > val1) + delta = val2 - val1; + else + delta = val1 - val2; + return true; + } + if (common_y_axes && cursors_orientation == CursorOrientation.HORIZONTAL) { + Float128 val1 = get_real_y (series[zoom_first_show], rel2scr_y(cursors.nth_data(0).y)); + Float128 val2 = 0; + if (is_cursor_active) + val2 = get_real_y (series[zoom_first_show], rel2scr_y(active_cursor.y)); + else + val2 = get_real_y (series[zoom_first_show], rel2scr_y(cursors.nth_data(1).y)); + if (val2 > val1) + delta = val2 - val1; + else + delta = val1 - val2; + return true; + } + return false; + } + + public string get_cursors_delta_str () { + Float128 delta = 0.0; + if (!get_cursors_delta(out delta)) return ""; + var str = ""; + var s = series[zoom_first_show]; + if (common_x_axes) + switch (s.axis_x.type) { + case Axis.Type.NUMBERS: + str = s.axis_x.format.printf((LongDouble)delta); + break; + case Axis.Type.DATE_TIME: + var date = "", time = ""; + int64 days = (int64)(delta / 24 / 3600); + format_date_time(s.axis_x, delta, out date, out time); + str = days.to_string() + " + " + time; + break; + } + if (common_y_axes) { + str = s.axis_y.format.printf((LongDouble)delta); + } + return str; + } + + public Chart copy () { + var chart = new Chart (); + chart.active_cursor = this.active_cursor; + chart.axis_rec_npoints = this.axis_rec_npoints; + chart.bg_color = this.bg_color; + chart.border_color = this.border_color; + chart.common_x_axes = this.common_x_axes; + chart.common_y_axes = this.common_y_axes; + chart.context = this.context; + chart.cur_x_max = this.cur_x_max; + chart.cur_x_min = this.cur_x_min; + chart.cur_y_max = this.cur_y_max; + chart.cur_y_min = this.cur_y_min; + chart.cursor_line_style = this.cursor_line_style; + chart.cursor_max_rm_distance = this.cursor_max_rm_distance; + chart.cursors = this.cursors.copy(); + chart.cursors_crossings = this.cursors_crossings; + chart.cursors_orientation = this.cursors_orientation; + chart.height = this.height; + chart.is_cursor_active = this.is_cursor_active; + chart.legend = this.legend.copy(); + chart.legend_height = this.legend_height; + chart.legend_line_length = this.legend_line_length; + chart.legend_text_hspace = this.legend_text_hspace; + chart.legend_text_vspace = this.legend_text_vspace; + chart.legend_width = this.legend_width; + chart.marker_size = this.marker_size; + chart.max_font_heights = this.max_font_heights; + chart.plot_area_x_max = this.plot_area_x_max; + chart.plot_area_x_min = this.plot_area_x_min; + chart.plot_area_y_max = this.plot_area_y_max; + chart.plot_area_y_min = this.plot_area_y_min; + chart.rel_zoom_x_min = this.rel_zoom_x_min; + chart.rel_zoom_x_max = this.rel_zoom_x_max; + chart.rel_zoom_y_min = this.rel_zoom_y_min; + chart.rel_zoom_y_max = this.rel_zoom_y_max; + chart.selection_style = this.selection_style; + chart.series = this.series; + chart.show_legend = this.show_legend; + chart.title = this.title.copy(); + chart.title_height = this.title_height; + chart.title_vindent = this.title_vindent; + chart.title_width = this.title_width; + chart.width = this.width; + chart.x_min = this.x_min; + chart.y_min = this.y_min; + chart.zoom_first_show = this.zoom_first_show; + return chart; + } + } +} diff --git a/src/Color.vala b/src/Color.vala new file mode 100644 index 0000000..6cbea9a --- /dev/null +++ b/src/Color.vala @@ -0,0 +1,12 @@ +namespace Gtk.CairoChart { + public struct Color { + double red; + double green; + double blue; + double alpha; + + public Color (double red = 0.0, double green = 0.0, double blue = 0.0, double alpha = 1.0) { + this.red = red; this.green = green; this.blue = blue; this.alpha = alpha; + } + } +} diff --git a/src/FontStyle.vala b/src/FontStyle.vala new file mode 100644 index 0000000..685fd0e --- /dev/null +++ b/src/FontStyle.vala @@ -0,0 +1,27 @@ +namespace Gtk.CairoChart { + public enum FontOrient { + HORIZONTAL = 0, + VERTICAL + } + + public struct FontStyle { + string family; + Cairo.FontSlant slant; + Cairo.FontWeight weight; + + FontOrient orientation; + double size; + + public FontStyle (string family = "Sans", + Cairo.FontSlant slant = Cairo.FontSlant.NORMAL, + Cairo.FontWeight weight = Cairo.FontWeight.NORMAL, + double size = 10, + FontOrient orientation = FontOrient.HORIZONTAL) { + this.family = family; + this.slant = slant; + this.weight = weight; + this.size = size; + this.orientation = orientation; + } + } +} diff --git a/src/Grid.vala b/src/Grid.vala new file mode 100644 index 0000000..d57691e --- /dev/null +++ b/src/Grid.vala @@ -0,0 +1,22 @@ +namespace Gtk.CairoChart { + public class Grid { + /*public enum GridType { + PRICK_LINE = 0, // default + LINE + }*/ + public Color color = Color (0, 0, 0, 0.1); + + public LineStyle line_style = LineStyle (); + + public Grid copy () { + var grid = new Grid (); + grid.color = this.color; + grid.line_style = this.line_style; + return grid; + } + + public Grid () { + line_style.dashes = {2, 3}; + } + } +} diff --git a/src/LabelStyle.vala b/src/LabelStyle.vala new file mode 100644 index 0000000..fc610ee --- /dev/null +++ b/src/LabelStyle.vala @@ -0,0 +1,8 @@ +namespace Gtk.CairoChart { + public struct LabelStyle { + FontStyle font_style; + LineStyle frame_line_style; + Color bg_color; + Color frame_color; + } +} diff --git a/src/Legend.vala b/src/Legend.vala new file mode 100644 index 0000000..93e63b9 --- /dev/null +++ b/src/Legend.vala @@ -0,0 +1,28 @@ +namespace Gtk.CairoChart { + public class Legend { + public enum Position { + TOP = 0, // default + LEFT, + RIGHT, + BOTTOM + } + public Position position = Position.TOP; + public FontStyle font_style = FontStyle(); + public Color bg_color = Color(1, 1, 1); + public LineStyle border_style = LineStyle (); + public double indent = 5; + + public Legend copy () { + var legend = new Legend (); + legend.position = this.position; + legend.font_style = this.font_style; + legend.bg_color = this.bg_color; + legend.indent = this.indent; + return legend; + } + + public Legend () { + border_style.color = Color (0, 0, 0, 0.3); + } + } +} diff --git a/src/LineStyle.vala b/src/LineStyle.vala new file mode 100644 index 0000000..4a58d1e --- /dev/null +++ b/src/LineStyle.vala @@ -0,0 +1,24 @@ +namespace Gtk.CairoChart { + public struct LineStyle { + double width; + Cairo.LineJoin line_join; + Cairo.LineCap line_cap; + double[]? dashes; + double dash_offset; + Color color; + + public LineStyle (Color color = Color(), + double width = 1, + double[]? dashes = null, double dash_offset = 0, + Cairo.LineJoin line_join = Cairo.LineJoin.MITER, + Cairo.LineCap line_cap = Cairo.LineCap.ROUND + ) { + this.width = width; + this.line_join = line_join; + this.line_cap = line_cap; + this.dashes = dashes; + this.dash_offset = dash_offset; + this.color = color; + } + } +} diff --git a/src/Place.vala b/src/Place.vala new file mode 100644 index 0000000..6ac611d --- /dev/null +++ b/src/Place.vala @@ -0,0 +1,52 @@ +namespace Gtk.CairoChart { + public class Place { + double _x_low = 0; + double _x_high = 0; + double _y_low = 0; + double _y_high = 0; + public double x_low { + get { return _x_low; } + set { _x_low = zoom_x_low = value; } + default = 0; + } + public double x_high { + get { return _x_high; } + set { _x_high = zoom_x_high = value; } + default = 0; + } + public double y_low { + get { return _y_low; } + set { _y_low = zoom_y_low = value; } + default = 0; + } + public double y_high { + get { return _y_high; } + set { _y_high = zoom_y_high = value; } + default = 0; + } + public double zoom_x_low = 0; + public double zoom_x_high = 1; + public double zoom_y_low = 0; + public double zoom_y_high = 1; + + public Place copy () { + var place = new Place (); + place.x_low = this.x_low; + place.x_high = this.x_high; + place.y_low = this.y_low; + place.y_high = this.y_high; + return place; + } + + public Place (double x_low = 0, double x_high = 1, double y_low = 0, double y_high = 1) { + this.x_low = x_low; + this.x_high = x_high; + this.y_low = y_low; + this.y_high = y_high; + zoom_x_low = x_low; + zoom_x_high = x_high; + zoom_y_low = y_low; + zoom_y_high = y_high; + } + } +} diff --git a/src/Point.vala b/src/Point.vala new file mode 100644 index 0000000..30bee7b --- /dev/null +++ b/src/Point.vala @@ -0,0 +1,10 @@ +namespace Gtk.CairoChart { + public struct Point { + Float128 x; + Float128 y; + + public Point (Float128 x = 0.0, Float128 y = 0.0) { + this.x = x; this.y = y; + } + } +} diff --git a/src/Series.vala b/src/Series.vala new file mode 100644 index 0000000..284921e --- /dev/null +++ b/src/Series.vala @@ -0,0 +1,73 @@ +using Cairo; + +namespace Gtk.CairoChart { + + public class Series { + + public Point[] points = {}; + public enum Sort { + BY_X = 0, + BY_Y = 1, + NO_SORT + } + public Sort sort = Sort.BY_X; + + public Axis axis_x = new Axis(); + public Axis axis_y = new Axis(); + + public enum MarkerType { + NONE = 0, // default + SQUARE, + CIRCLE, + TRIANGLE, + PRICLE_SQUARE, + PRICLE_CIRCLE, + PRICLE_TRIANGLE + } + + public Place place = new Place(); + public Text title = new Text (); + public MarkerType marker_type = MarkerType.SQUARE; + + public Grid grid = new Grid (); + + public LineStyle line_style = LineStyle (); + + protected Color _color = Color (0.0, 0.0, 0.0, 1.0); + public Color color { + get { return _color; } + set { + _color = value; + line_style.color = _color; + axis_x.color = _color; + axis_y.color = _color; + grid.color = _color; + grid.color.alpha = 0.5; + grid.line_style.color = _color; + grid.line_style.color.alpha = 0.5; + } + default = Color (0.0, 0.0, 0.0, 1.0); + } + + public bool zoom_show = true; + + public Series copy () { + var series = new Series (); + series._color = this._color; + series.axis_x = this.axis_x.copy (); + series.axis_y = this.axis_y.copy (); + series.grid = this.grid.copy (); + series.line_style = this.line_style; + series.marker_type = this.marker_type; + series.place = this.place.copy(); + series.points = this.points; + series.sort = this.sort; + series.title = this.title.copy(); + series.zoom_show = this.zoom_show; + return series; + } + + public Series () { + } + } +} diff --git a/src/Text.vala b/src/Text.vala new file mode 100644 index 0000000..b52f677 --- /dev/null +++ b/src/Text.vala @@ -0,0 +1,58 @@ +namespace Gtk.CairoChart { + [Compact] + public class Text { + public string text = ""; + public FontStyle style = FontStyle (); + public Color color = Color(); + + Cairo.TextExtents get_extents (Cairo.Context context) { + context.select_font_face (style.family, + style.slant, + style.weight); + context.set_font_size (style.size); + Cairo.TextExtents extents; + context.text_extents (text, out extents); + return extents; + } + + public double get_width (Cairo.Context context) { + var extents = get_extents (context); + if (style.orientation == FontOrient.HORIZONTAL) + return extents.width; + else + return extents.height; + } + + public double get_height (Cairo.Context context) { + var extents = get_extents (context); + if (style.orientation == FontOrient.HORIZONTAL) + return extents.height; + else + return extents.width; + } + + public double get_x_bearing (Cairo.Context context) { + var extents = get_extents (context); + if (style.orientation == FontOrient.HORIZONTAL) + return extents.x_bearing; + else + return extents.y_bearing; + } + + public Text (string text = "", + FontStyle style = FontStyle(), + Color color = Color()) { + this.text = text; + this.style = style; + this.color = color; + } + + public Text copy () { + var text = new Text (); + text.text = this.text; + text.style = this.style; + text.color = this.color; + return text; + } + } +} diff --git a/src/cairo-chart-float128type.h b/src/cairo-chart-float128type.h new file mode 100644 index 0000000..9e68163 --- /dev/null +++ b/src/cairo-chart-float128type.h @@ -0,0 +1,2 @@ +typedef __float128 cairo_chart_float128; +typedef long double cairo_chart_long_double; diff --git a/src/cairo-chart-float128type.vapi b/src/cairo-chart-float128type.vapi new file mode 100644 index 0000000..04aaa8c --- /dev/null +++ b/src/cairo-chart-float128type.vapi @@ -0,0 +1,6 @@ +namespace Gtk.CairoChart { + [CCode (cname = "cairo_chart_float128", has_type_id = false, cheader_filename = "cairo-chart-float128type.h")] + public struct Float128 : double {} + [CCode (cname = "cairo_chart_long_double", has_type_id = false, cheader_filename = "cairo-chart-float128type.h")] + public struct LongDouble : double {} +} diff --git a/src/cairo-chart.deps.in b/src/cairo-chart.deps.in new file mode 100644 index 0000000..c6ec5d0 --- /dev/null +++ b/src/cairo-chart.deps.in @@ -0,0 +1 @@ +cairo-chart-float128type-@MAJOR@ diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt new file mode 100644 index 0000000..fc3fae5 --- /dev/null +++ b/test/CMakeLists.txt @@ -0,0 +1,8 @@ +SET (BinName chart_test) +FILE (GLOB_RECURSE BinSources RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ChartTest.vala) +SET (BinPackages gtk+-3.0) +SET (BinPkgModules gtk+-3.0) +SET (BinCustomVapis ${CMAKE_BINARY_DIR}/src/${PROJECT_LOWERCASE_NAME}-${MAJOR}.vapi ${CMAKE_SOURCE_DIR}/src/cairo-chart-float128type.vapi) +SET (BinLinkLibs ${PROJECT_LOWERCASE_NAME}) +INCLUDE_DIRECTORIES ("${CMAKE_BINARY_DIR}/src;${CMAKE_SOURCE_DIR}/src") +INCLUDE (ValaBinCommonRules) diff --git a/test/ChartTest.vala b/test/ChartTest.vala new file mode 100644 index 0000000..a3e4f15 --- /dev/null +++ b/test/ChartTest.vala @@ -0,0 +1,578 @@ +using Gtk, CairoChart; + +void plot_chart1 (Chart chart) { + var s1 = new Series (); + var s2 = new Series (); + var s3 = new Series (); + + s1.title = new Text("Series 1"); s1.color = Color (1, 0, 0); + s1.points = {Point(0, 0), Point(2, 1), Point(1, 3)}; + s1.axis_x.position = Axis.Position.HIGH; + s1.axis_x.format = "%.3Lf"; + s2.title = new Text("Series 2"); s2.color = Color (0, 1, 0); + s2.points = {Point(5, -3), Point(25, -18), Point(-11, 173)}; + s3.title = new Text("Series 3"); s3.color = Color (0, 0, 1); + s3.points = {Point(9, 17), Point(2, 10), Point(122, 31)}; + s3.axis_y.position = Axis.Position.HIGH; + + s1.axis_x.min = 0; s1.axis_x.max = 2; + s1.axis_y.min = 0; s1.axis_y.max = 3; + s1.place.x_low = 0.25; s1.place.x_high = 0.75; + s1.place.y_low = 0.3; s1.place.y_high = 0.9; + + s2.axis_x.min = -15; s2.axis_x.max = 30; + s2.axis_y.min = -20; s2.axis_y.max = 200; + s2.place.x_low = 0.5; s2.place.x_high = 1; + s2.place.y_low = 0.0; s2.place.y_high = 0.5; + + s3.axis_x.min = 0; s3.axis_x.max = 130; + s3.axis_y.min = 15; s3.axis_y.max = 35; + s3.place.x_low = 0; s3.place.x_high = 0.5; + s3.place.y_low = 0.5; s3.place.y_high = 1.0; + + s2.marker_type = Series.MarkerType.CIRCLE; + s3.marker_type = Series.MarkerType.PRICLE_TRIANGLE; + + s1.axis_x.title = new Text("Series 1: Axis X."); + s1.axis_y.title = new Text("Series 1: Axis Y."); + s2.axis_x.title = new Text("Series 2: Axis X."); + s2.axis_y.title = new Text("Series 2: Axis Y."); + s3.axis_x.title = new Text("Series 3: Axis X."); + s3.axis_y.title = new Text("Series 3: Axis Y."); + + chart.series = { s1, s2, s3 }; +} + +void plot_chart2 (Chart chart) { + var s1 = new Series (); + var s2 = new Series (); + var s3 = new Series (); + + s1.title = new Text("Series 1"); s1.color = Color (1, 0, 0); + s1.points = {Point(-12, 0), Point(2, 1), Point(20, 3)}; + s2.axis_y.position = Axis.Position.HIGH; + s1.axis_x.format = "%.3Lf"; + s2.title = new Text("Series 2"); s2.color = Color (0, 1, 0); + s2.points = {Point(5, -3), Point(25, -18), Point(-11, 173)}; + s3.title = new Text("Series 3"); s3.color = Color (0, 0, 1); + s3.points = {Point(9, 17), Point(2, 10), Point(-15, 31)}; + s3.axis_y.position = Axis.Position.HIGH; + + s1.axis_x.min = -15; s1.axis_x.max = 30; + s1.axis_y.min = 0; s1.axis_y.max = 3; + s1.place.x_low = 0.0; s1.place.x_high = 1.0; + s1.place.y_low = 0.3; s1.place.y_high = 0.9; + + s2.axis_x.min = -15; s2.axis_x.max = 30; + s2.axis_y.min = -20; s2.axis_y.max = 200; + s2.place.x_low = 0.0; s2.place.x_high = 1.0; + s2.place.y_low = 0.0; s2.place.y_high = 0.5; + + s3.axis_x.min = -15; s3.axis_x.max = 30; + s3.axis_y.min = 15; s3.axis_y.max = 35; + s3.place.x_low = 0.0; s3.place.x_high = 1.0; + s3.place.y_low = 0.5; s3.place.y_high = 1.0; + + s1.marker_type = Series.MarkerType.PRICLE_CIRCLE; + s2.marker_type = Series.MarkerType.PRICLE_SQUARE; + + s1.axis_x.title = new Text("All Series: Axis X."); + s1.axis_y.title = new Text("Series 1: Axis Y."); + s2.axis_x.title = new Text("All Series: Axis X."); + s2.axis_y.title = new Text("Series 2: Axis Y."); + s3.axis_x.title = new Text("All Series: Axis X."); + s3.axis_y.title = new Text("Series 3: Axis Y."); + + //s1.axis_x.position = s2.axis_x.position = s3.axis_x.position = Axis.Position.HIGH; + //s1.axis_x.type = s2.axis_x.type = s3.axis_x.type = Axis.Type.DATE_TIME; + //s1.axis_x.max = s2.axis_x.max = s3.axis_x.max = 5*24*3600; + + chart.series = { s1, s2, s3 }; +} + +void plot_chart3 (Chart chart) { + var s1 = new Series (); + var s2 = new Series (); + var s3 = new Series (); + + s1.title = new Text("Series 1"); s1.color = Color (1, 0, 0); + s1.points = {Point(0, 70), Point(2, 155), Point(1, -3)}; + s1.axis_x.position = Axis.Position.HIGH; + s1.axis_y.position = Axis.Position.HIGH; + s1.axis_x.format = "%.3Lf"; + s2.title = new Text("Series 2"); s2.color = Color (0, 1, 0); + s2.points = {Point(5, -3), Point(25, -18), Point(-11, 173)}; + s2.axis_y.position = Axis.Position.HIGH; + s3.title = new Text("Series 3"); s3.color = Color (0, 0, 1); + s3.points = {Point(9, -17), Point(2, 10), Point(122, 31)}; + s3.axis_y.position = Axis.Position.HIGH; + + s1.axis_x.min = 0; s1.axis_x.max = 2; + s1.axis_y.min = -20; s1.axis_y.max = 200; + s1.place.x_low = 0.25; s1.place.x_high = 0.75; + s1.place.y_low = 0.0; s1.place.y_high = 1.0; + + s2.axis_x.min = -15; s2.axis_x.max = 30; + s2.axis_y.min = -20; s2.axis_y.max = 200; + s2.place.x_low = 0.5; s2.place.x_high = 1; + s2.place.y_low = 0.0; s2.place.y_high = 1.0; + + s3.axis_x.min = 0; s3.axis_x.max = 130; + s3.axis_y.min = -20; s3.axis_y.max = 200; + s3.place.x_low = 0; s3.place.x_high = 0.5; + s3.place.y_low = 0.0; s3.place.y_high = 1.0; + + s2.marker_type = Series.MarkerType.PRICLE_CIRCLE; + s3.marker_type = Series.MarkerType.TRIANGLE; + + s1.axis_x.title = new Text("Series 1: Axis X."); + s1.axis_y.title = new Text("Series 1: Axis Y."); + s2.axis_x.title = new Text("Series 2: Axis X."); + s2.axis_y.title = new Text("Series 2: Axis Y."); + s3.axis_x.title = new Text("Series 3: Axis X."); + s3.axis_y.title = new Text("Series 3: Axis Y."); + + //s1.axis_y.position = s2.axis_y.position = s3.axis_y.position = Axis.Position.LOW; + + chart.series = { s1, s2, s3 }; +} + +void plot_chart4 (Chart chart) { + var s1 = new Series (); + var s2 = new Series (); + var s3 = new Series (); + var s4 = new Series (); + + s1.axis_x.type = Axis.Type.DATE_TIME; + s3.axis_x.type = Axis.Type.DATE_TIME; + s4.axis_x.type = Axis.Type.DATE_TIME; + s4.axis_x.dsec_signs = 5; + + var now = new DateTime.now_local().to_unix(); + var high = (uint64) (253000000000L); + + s1.title = new Text("Series 1"); s1.color = Color (1, 0, 0); + s1.points = {Point(now, 70), Point(now - 100000, 155), Point(now + 100000, 30)}; + s1.axis_x.position = Axis.Position.HIGH; + s1.axis_y.position = Axis.Position.HIGH; + s2.title = new Text("Series 2"); s2.color = Color (0, 1, 0); + s2.points = {Point(5, -3), Point(25, -18), Point(-11, 173)}; + s2.axis_y.position = Axis.Position.HIGH; + s3.title = new Text("Series 3"); s3.color = Color (0, 0, 1); + s3.points = {Point(high - 2 + 0.73, -17), Point(high - 1 + 0.234, 10), Point(high + 1 + 0.411, 31)}; + s3.axis_y.position = Axis.Position.HIGH; + s4.title = new Text("Series 4"); s4.color = Color (0.5, 0.3, 0.9); + s4.points = {Point(high + 0.005, -19.05), Point(high + 0.0051, 28), Point(high + 0.0052, 55), Point(high + 0.0053, 44)}; + s4.axis_y.position = Axis.Position.HIGH; + + s1.axis_x.min = now - 100000; s1.axis_x.max = now + 100000; + s1.axis_y.min = -20; s1.axis_y.max = 200; + s1.place.x_low = 0.25; s1.place.x_high = 0.75; + s1.place.y_low = 0.0; s1.place.y_high = 1.0; + + s2.axis_x.min = -15; s2.axis_x.max = 30; + s2.axis_y.min = -20; s2.axis_y.max = 200; + s2.place.x_low = 0.2; s2.place.x_high = 1; + s2.place.y_low = 0.0; s2.place.y_high = 1.0; + + s3.axis_x.min = high - 2; s3.axis_x.max = high + 1; + s3.axis_y.min = -20; s3.axis_y.max = 200; + s3.place.x_low = 0; s3.place.x_high = 0.8; + s3.place.y_low = 0.0; s3.place.y_high = 1.0; + + s4.axis_x.min = high + 0.0049; s4.axis_x.max = high + 0.0054; + s4.axis_y.min = -20; s4.axis_y.max = 200; + s4.place.x_low = 0.2; s4.place.x_high = 1.0; + s4.place.y_low = 0.0; s4.place.y_high = 1.0; + + s2.marker_type = Series.MarkerType.PRICLE_CIRCLE; + s3.marker_type = Series.MarkerType.TRIANGLE; + s4.marker_type = Series.MarkerType.PRICLE_SQUARE; + + s1.axis_x.title = new Text("Series 1: Axis X."); + s1.axis_y.title = new Text("Series 1: Axis Y."); + s2.axis_x.title = new Text("Series 2: Axis X."); + s2.axis_y.title = new Text("Series 2: Axis Y."); + s3.axis_x.title = new Text("Series 3: Axis X."); + s3.axis_y.title = new Text("Series 3: Axis Y."); + s4.axis_x.title = new Text("Series 4: Axis X."); + s4.axis_y.title = new Text("Series 4: Axis Y."); + + chart.series = { s1, s2, s3, s4 }; +} + +bool point_in_chart (Chart chart, double x, double y) { + if (x < chart.plot_area_x_min) return false; + if (x > chart.plot_area_x_max) return false; + if (y < chart.plot_area_y_min) return false; + if (y > chart.plot_area_y_max) return false; + return true; +} + +enum MouseState { + FREE = 0, // default + DRAW_SELECTION, + MOVING_CHART, + CURSOR_SELECTION +} + +int main (string[] args) { + init (ref args); + + var window = new Window (); + window.title = "Chart Test."; + window.border_width = 5; + window.window_position = WindowPosition.CENTER; + window.set_default_size (640, 480); + window.destroy.connect (main_quit); + + var chart1 = new Chart(); + var chart2 = new Chart(); + var chart3 = new Chart(); + var chart4 = new Chart(); + var label = new Label ("Chart Test!"); + var button1 = new Button.with_label("Separate axes"); + var button2 = new Button.with_label("Common X axes"); + var button3 = new Button.with_label("Common Y axes"); + var button4 = new Button.with_label("Dates/Times"); + var button5 = new Button.with_label("rm Axis Titles"); + var button6 = new Button.with_label("Dates only"); + var button7 = new Button.with_label("Times only"); + var button8 = new Button.with_label("Date+Time"); + + plot_chart1 (chart1); + plot_chart2 (chart2); + plot_chart3 (chart3); + plot_chart4 (chart4); + + chart1.selection_style = LineStyle(Color(0.3, 0.3, 0.3, 0.7), 1); + + var da = new DrawingArea(); + da.set_events ( Gdk.EventMask.BUTTON_PRESS_MASK + |Gdk.EventMask.BUTTON_RELEASE_MASK + |Gdk.EventMask.POINTER_MOTION_MASK + ); + + var chart = chart1; + + var radio_button1 = new RadioButton.with_label (null, "Top Legend"); + var radio_button2 = new RadioButton.with_label (radio_button1.get_group(), "Right Legend"); + var radio_button3 = new RadioButton.with_label_from_widget (radio_button1, "Left Legend"); + var radio_button4 = new RadioButton.with_label_from_widget (radio_button1, "Bottom Legend"); + var radio_button7 = new RadioButton.with_label (null, "Vertical Cursors"); + var radio_button8 = new RadioButton.with_label_from_widget (radio_button7, "Horizontal Cursors"); + + button1.clicked.connect (() => { + chart = chart1; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + switch (chart.legend.position) { + case Legend.Position.TOP: radio_button1.set_active(true); break; + case Legend.Position.RIGHT: radio_button2.set_active(true); break; + case Legend.Position.LEFT: radio_button3.set_active(true); break; + case Legend.Position.BOTTOM: radio_button4.set_active(true); break; + } + switch (chart.cursors_orientation) { + case Chart.CursorOrientation.VERTICAL: radio_button7.set_active(true); break; + case Chart.CursorOrientation.HORIZONTAL: radio_button8.set_active(true); break; + } + }); + button2.clicked.connect (() => { + chart = chart2; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + switch (chart.legend.position) { + case Legend.Position.TOP: radio_button1.set_active(true); break; + case Legend.Position.RIGHT: radio_button2.set_active(true); break; + case Legend.Position.LEFT: radio_button3.set_active(true); break; + case Legend.Position.BOTTOM: radio_button4.set_active(true); break; + } + switch (chart.cursors_orientation) { + case Chart.CursorOrientation.VERTICAL: radio_button7.set_active(true); break; + case Chart.CursorOrientation.HORIZONTAL: radio_button8.set_active(true); break; + } + }); + button3.clicked.connect (() => { + chart = chart3; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + switch (chart.legend.position) { + case Legend.Position.TOP: radio_button1.set_active(true); break; + case Legend.Position.RIGHT: radio_button2.set_active(true); break; + case Legend.Position.LEFT: radio_button3.set_active(true); break; + case Legend.Position.BOTTOM: radio_button4.set_active(true); break; + } + switch (chart.cursors_orientation) { + case Chart.CursorOrientation.VERTICAL: radio_button7.set_active(true); break; + case Chart.CursorOrientation.HORIZONTAL: radio_button8.set_active(true); break; + } + }); + button4.clicked.connect (() => { + chart = chart4; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + switch (chart.legend.position) { + case Legend.Position.TOP: radio_button1.set_active(true); break; + case Legend.Position.RIGHT: radio_button2.set_active(true); break; + case Legend.Position.LEFT: radio_button4.set_active(true); break; + case Legend.Position.BOTTOM: radio_button4.set_active(true); break; + } + switch (chart.cursors_orientation) { + case Chart.CursorOrientation.VERTICAL: radio_button7.set_active(true); break; + case Chart.CursorOrientation.HORIZONTAL: radio_button8.set_active(true); break; + } + }); + button5.clicked.connect (() => { + for (var i = 0; i < chart.series.length; ++i) { + var s = chart.series[i]; + s.axis_x.title.text = ""; + s.axis_y.title.text = ""; + } + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + }); + button6.clicked.connect (() => { + for (var i = 0; i < chart.series.length; ++i) { + var s = chart.series[i]; + s.axis_x.date_format = "%Y.%m.%d"; + s.axis_x.time_format = ""; + } + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + }); + + button7.clicked.connect (() => { + for (var i = 0; i < chart.series.length; ++i) { + var s = chart.series[i]; + s.axis_x.date_format = ""; + s.axis_x.time_format = "%H:%M:%S"; + } + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + }); + + button8.clicked.connect (() => { + for (var i = 0; i < chart.series.length; ++i) { + var s = chart.series[i]; + s.axis_x.date_format = "%Y.%m.%d"; + s.axis_x.time_format = "%H:%M:%S"; + } + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + }); + + + radio_button1.toggled.connect ((button) => { + if (button.get_active()) { + chart.legend.position = Legend.Position.TOP; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + }); + radio_button2.toggled.connect ((button) => { + if (button.get_active()) { + chart.legend.position = Legend.Position.RIGHT; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + }); + radio_button3.toggled.connect ((button) => { + if (button.get_active()) { + chart.legend.position = Legend.Position.LEFT; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + }); + radio_button4.toggled.connect ((button) => { + if (button.get_active()) { + chart.legend.position = Legend.Position.BOTTOM; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + }); + + +/* var radio_button5 = new RadioButton.with_label (null, "Labels"); + var radio_button6 = new RadioButton.with_label_from_widget (radio_button5, "Cursors"); + radio_button5.toggled.connect ((button) => { + // TODO: set labels + if (button.get_active()) { + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + }); + radio_button6.toggled.connect ((button) => { + // TODO: set cursors + if (button.get_active()) { + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + });*/ + + radio_button7.toggled.connect ((button) => { + if (button.get_active()) { + chart.cursors_orientation = Chart.CursorOrientation.VERTICAL; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + }); + radio_button8.toggled.connect ((button) => { + if (button.get_active()) { + chart.cursors_orientation = Chart.CursorOrientation.HORIZONTAL; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + } + }); + + MouseState mouse_state = MouseState.FREE; + + double sel_x0 = 0, sel_x1 = 0, sel_y0 = 0, sel_y1 = 0; + double mov_x0 = 0, mov_y0 = 0; + + da.draw.connect((context) => { + chart.context = context; + chart.width = da.get_allocated_width(); + chart.height = da.get_allocated_height(); + chart.clear(); + + // user's pre draw operations here... + // ... + + /*var ret = */chart.draw(); + + // user's post draw operations here... + if (mouse_state == MouseState.DRAW_SELECTION) + chart.draw_selection (sel_x0, sel_y0, sel_x1, sel_y1); + + // show delta + var str = chart.get_cursors_delta_str(); + if (str != "") { + var text = "Δ = " + str; + var text_t = new Text(text); + var w = text_t.get_width(context); + var h = text_t.get_height(context); + var x0 = chart.plot_area_x_max - w - 5; + var y0 = chart.plot_area_y_min + h + 5; + chart.set_source_rgba(chart.legend.bg_color); + context.rectangle (x0, y0 - h, w, h); + context.fill(); + context.move_to (x0, y0); + chart.set_source_rgba(chart.common_axis_color); + context.show_text(text); + } + + return true;//ret; + }); + + da.button_press_event.connect((event) => { + if (!point_in_chart(chart, event.x, event.y)) return true; + + switch (event.button) { + case 1: // start cursor position selection + if ((event.state & Gdk.ModifierType.SHIFT_MASK) != 0) { // remove cursor + chart.set_active_cursor (event.x, event.y, true); + chart.remove_active_cursor(); + mouse_state = MouseState.FREE; + } else { // add cursor + chart.set_active_cursor (event.x, event.y); + mouse_state = MouseState.CURSOR_SELECTION; + } + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + break; + + case 2: // start zoom area selection + sel_x0 = sel_x1 = event.x; + sel_y0 = sel_y1 = event.y; + mouse_state = MouseState.DRAW_SELECTION; + break; + + case 3: // start moving + mov_x0 = event.x; + mov_y0 = event.y; + mouse_state = MouseState.MOVING_CHART; + break; + } + + return true; // return ret; + }); + da.button_release_event.connect((event) => { + + if (!point_in_chart(chart, event.x, event.y)) return true; + + switch (event.button) { + case 1: // start cursor position selection + if ((event.state & Gdk.ModifierType.SHIFT_MASK) != 0) { // remove cursor + //chart.remove_active_cursor (); + //da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + //mouse_state = MouseState.FREE; + } else { // add cursor + chart.add_active_cursor (); + mouse_state = MouseState.FREE; + } + break; + + case 2: + sel_x1 = event.x; + sel_y1 = event.y; + if (sel_x1 > sel_x0 && sel_y1 > sel_y0) + chart.zoom_in (sel_x0, sel_y0, sel_x1, sel_y1); + else + chart.zoom_out (); + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + mouse_state = MouseState.FREE; + break; + + case 3: + mouse_state = MouseState.FREE; + break; + } + + return true; // return ret; + }); + da.motion_notify_event.connect((event) => { + if (!point_in_chart(chart, event.x, event.y)) return true; + + switch (mouse_state) { + case MouseState.DRAW_SELECTION: + sel_x1 = event.x; + sel_y1 = event.y; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + break; + + case MouseState.MOVING_CHART: + var delta_x = event.x - mov_x0, delta_y = event.y - mov_y0; + chart.move (delta_x, delta_y); + mov_x0 = event.x; + mov_y0 = event.y; + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + break; + + case MouseState.CURSOR_SELECTION: + chart.set_active_cursor (event.x, event.y); + da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height()); + break; + } + + return true; // return ret; + }); + da.add_events(Gdk.EventMask.SCROLL_MASK); + da.scroll_event.connect((event) => { + + //var ret = chart.scroll_notify_event(event); + + return true; // return ret; + }); + + var vbox2 = new Box(Orientation.VERTICAL, 0); + vbox2.pack_start(button1, false, false, 0); + vbox2.pack_start(button2, false, false, 0); + vbox2.pack_start(button3, false, false, 0); + vbox2.pack_start(button4, false, false, 0); + vbox2.pack_start(button5, false, false, 0); + vbox2.pack_start(button6, false, false, 0); + vbox2.pack_start(button7, false, false, 0); + vbox2.pack_start(button8, false, false, 0); + vbox2.pack_start(radio_button1, false, false, 0); + vbox2.pack_start(radio_button2, false, false, 0); + vbox2.pack_start(radio_button3, false, false, 0); + vbox2.pack_start(radio_button4, false, false, 0); + //vbox2.pack_start(radio_button5, false, false, 0); + //vbox2.pack_start(radio_button6, false, false, 0); + vbox2.pack_start(radio_button7, false, false, 0); + vbox2.pack_start(radio_button8, false, false, 0); + + var hbox = new Box(Orientation.HORIZONTAL, 0); + hbox.pack_start(da, true, true, 0); + hbox.pack_end(vbox2, false, false, 0); + + var vbox = new Box(Orientation.VERTICAL, 0); + vbox.pack_start(label, false, false, 0); + vbox.pack_end(hbox, true, true, 0); + + window.add(vbox); + + window.show_all(); + + Gtk.main(); + return 0; +} diff --git a/util/backbone b/util/backbone new file mode 160000 index 0000000..11c998a --- /dev/null +++ b/util/backbone @@ -0,0 +1 @@ +Subproject commit 11c998aca2aa1b787286b336e579e5a4e31f471a diff --git a/valadoc_env b/valadoc_env new file mode 100644 index 0000000..57510e2 --- /dev/null +++ b/valadoc_env @@ -0,0 +1,2 @@ +BASEDIR=src +PKGS=gtk+-3.0