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Code Issues Packages Projects Releases Wiki Activity

CanvasWidget, with example

This commit is contained in:
Vadim Lopatin 2015-03-24 21:20:47 +03:00
parent ca58769a91
commit 0c2b25d558
3 changed files with 49 additions and 0 deletions
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13
examples/example1/src/example1.d
View File

@ -840,6 +840,19 @@ void main()
tabs.addTab((new SampleAnimationWidget("tab6")).layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT), "TAB_ANIMATION"c);
CanvasWidget canvas = new CanvasWidget("canvas");
canvas.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
canvas.onDrawListener = delegate(CanvasWidget canvas, DrawBuf buf, Rect rc) {
int x = rc.left;
int y = rc.top;
buf.fillRect(Rect(x+20, y+20, x+150, y+200), 0x80FF80);
buf.fillRect(Rect(x+90, y+80, x+250, y+250), 0x80FF80FF);
canvas.font.drawText(buf, x + 40, y + 50, "fillRect()"d, 0xC080C0);
canvas.font.drawText(buf, x + 300, y + 100, "drawPixel()"d, 0x000080);
for (int i = 0; i < 80; i++)
buf.drawPixel(x+300 + i * 4, y+140 + i * 3 % 100, 0xFF0000 + i * 2);
};
tabs.addTab(canvas, "TAB_CANVAS"c);
//==========================================================================

1
examples/example1/views/res/i18n/en.ini
View File

@ -32,4 +32,5 @@ TAB_BUTTONS=Buttons
TAB_ANIMATION=Animation
TAB_TABLE_LAYOUT=Table layout
TAB_EDITORS=Editors
TAB_CANVAS=Canvas

35
src/dlangui/widgets/controls.d
View File

@ -994,3 +994,38 @@ class ScrollBar : AbstractSlider, OnClickHandler {
}
}
/// interface - slot for onClick
interface OnDrawHandler {
void doDraw(CanvasWidget canvas, DrawBuf buf, Rect rc);
}
/// canvas widget - draw on it either by overriding of doDraw() or by assigning of onDrawListener
class CanvasWidget : Widget {
Listener!OnDrawHandler onDrawListener;
this(string ID = null) {
super(ID);
}
override void measure(int parentWidth, int parentHeight) {
measuredContent(parentWidth, parentHeight, 0, 0);
}
void doDraw(DrawBuf buf, Rect rc) {
if (onDrawListener.assigned)
onDrawListener(this, buf, rc);
}
override void onDraw(DrawBuf buf) {
if (visibility != Visibility.Visible)
return;
super.onDraw(buf);
Rect rc = _pos;
applyMargins(rc);
auto saver = ClipRectSaver(buf, rc, alpha);
applyPadding(rc);
doDraw(buf, rc);
}
}