Cairo-Chart/src/Area.vala

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Vala
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namespace CairoChart {
/**
* Area rectangle.
*/
public class Area {
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double _x0 = 0;
double _x1 = 1;
double _y0 = 0;
double _y1 = 1;
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/**
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* Zoomed Left bound.
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*/
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public double zx0 = 0;
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/**
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* Zoomed Top bound.
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*/
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public double zx1 = 1;
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/**
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* Zoomed Right bound.
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*/
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public double zy0 = 0;
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/**
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* Zoomed Bottom bound.
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*/
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public double zy1 = 1;
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/**
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* Left bound.
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*/
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public double x0 {
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get {
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return _x0;
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}
set {
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zx0 = _x0 = value;
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}
}
/**
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* Top bound.
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*/
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public double y0 {
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get {
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return _y0;
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}
set {
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zy0 = _y0 = value;
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}
}
/**
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* Right bound.
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*/
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public double x1 {
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get {
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return _x1;
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}
set {
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zx1 = _x1 = value;
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}
}
/**
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* Bottom bound.
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*/
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public double y1 {
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get {
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return _y1;
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}
set {
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zy1 = _y1 = value;
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}
}
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/**
* ``Area`` width.
*/
public double width {
get {
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return _x1 - _x0;
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}
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set {
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zx1 = _x1 = _x0 + value;
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}
}
/**
* ``Area`` height.
*/
public double height {
get {
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return _y1 - _y0;
}
set {
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zy1 = _y1 = _y0 + value;
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}
}
/**
* ``Area`` zoomed width.
*/
public double zwidth {
get {
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return zx1 - zx0;
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}
set {
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zx1 = zx0 + value;
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}
}
/**
* ``Area`` zoomed height.
*/
public double zheight {
get {
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return zy1 - zy0;
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}
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set {
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zy1 = zy0 + value;
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}
}
/**
* Constructs a new ``Area``.
*/
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public Area () { }
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/**
* Constructs a new ``Area`` by other ``Area``.
* @param area ``Area`` instance.
*/
public Area.with_area (Area area) {
this.x0 = area.x0;
this.y0 = area.y0;
this.x1 = area.x1;
this.y1 = area.y1;
}
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/**
* Constructs a new ``Area`` with absolute coordinates.
* @param x0 left bound.
* @param y0 top bound.
* @param x1 right bound.
* @param y1 bottom bound.
*/
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public Area.with_abs (double x0, double y0, double x1, double y1) {
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this.x0 = x0;
this.y0 = y0;
this.x1 = x1;
this.y1 = y1;
}
/**
* Constructs a new ``Area`` with relative coordinates.
* @param x0 left bound.
* @param y0 top bound.
* @param width ``Area`` width.
* @param height ``Area`` height.
*/
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public Area.with_rel (double x0, double y0, double width, double height) {
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this.x0 = x0;
this.y0 = y0;
this.width = width;
this.height = height;
}
/**
* Constructs a new ``Area`` by ``Cairo.Rectangle``.
* @param rectangle ``Cairo.Rectangle`` instance.
*/
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public Area.with_rectangle (Cairo.Rectangle rectangle) {
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this.x0 = rectangle.x;
this.y0 = rectangle.y;
this.width = rectangle.width;
this.height = rectangle.height;
}
/**
* Gets a copy of the ``Chart``.
*/
public Area copy () {
return new Area.with_area(this);
}
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/**
* Unzooms ``Area``.
*/
public void unzoom () {
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zx0 = x0;
zy0 = y0;
zx1 = x1;
zy1 = y1;
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}
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}
}