Brad King e1c7747253 Format include directive blocks and ordering with clang-format
Sort include directives within each block (separated by a blank line) in
lexicographic order (except to prioritize `sys/types.h` first).  First
run `clang-format` with the config file:

    ---
    SortIncludes: false
    ...

Commit the result temporarily.  Then run `clang-format` again with:

    ---
    SortIncludes: true
    IncludeCategories:
      - Regex:    'sys/types.h'
        Priority: -1
    ...

Commit the result temporarily.  Start a new branch and cherry-pick the
second commit.  Manually resolve conflicts to preserve indentation of
re-ordered includes.  This cleans up the include ordering without
changing any other style.

Use the following command to run `clang-format`:

    $ git ls-files -z -- \
        '*.c' '*.cc' '*.cpp' '*.cxx' '*.h' '*.hh' '*.hpp' '*.hxx' |
      egrep -z -v '(Lexer|Parser|ParserHelper)\.' |
      egrep -z -v '^Source/cm_sha2' |
      egrep -z -v '^Source/(kwsys|CursesDialog/form)/' |
      egrep -z -v '^Utilities/(KW|cm).*/' |
      egrep -z -v '^Tests/Module/GenerateExportHeader' |
      egrep -z -v '^Tests/RunCMake/CommandLine/cmake_depends/test_UTF-16LE.h' |
      xargs -0 clang-format -i

This selects source files that do not come from a third-party.

Inspired-by: Daniel Pfeifer <daniel@pfeifer-mail.de>
2016-04-29 13:58:54 -04:00

63 lines
1.7 KiB
C++

// Taken from http://cgit.freedesktop.org/cairomm/plain/examples/surfaces/image-surface.cc
/* M_PI is defined in math.h in the case of Microsoft Visual C++, Solaris,
* et. al.
*/
#if defined(_MSC_VER)
#define _USE_MATH_DEFINES
#endif
#include <cairomm/context.h>
#include <cairomm/surface.h>
#include <cairommconfig.h>
#include <iostream>
#include <string>
#include <cmath>
int main()
{
Cairo::RefPtr<Cairo::ImageSurface> surface =
Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, 600, 400);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
cr->save(); // save the state of the context
cr->set_source_rgb(0.86, 0.85, 0.47);
cr->paint(); // fill image with the color
cr->restore(); // color is back to black now
cr->save();
// draw a border around the image
cr->set_line_width(20.0); // make the line wider
cr->rectangle(0.0, 0.0, surface->get_width(), surface->get_height());
cr->stroke();
cr->set_source_rgba(0.0, 0.0, 0.0, 0.7);
// draw a circle in the center of the image
cr->arc(surface->get_width() / 2.0, surface->get_height() / 2.0,
surface->get_height() / 4.0, 0.0, 2.0 * M_PI);
cr->stroke();
// draw a diagonal line
cr->move_to(surface->get_width() / 4.0, surface->get_height() / 4.0);
cr->line_to(surface->get_width() * 3.0 / 4.0, surface->get_height() * 3.0 / 4.0);
cr->stroke();
cr->restore();
#ifdef CAIRO_HAS_PNG_FUNCTIONS
std::string filename = "image.png";
surface->write_to_png(filename);
std::cout << "Wrote png file \"" << filename << "\"" << std::endl;
#else
std::cout << "You must compile cairo with PNG support for this example to work."
<< std::endl;
#endif
}