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optimize background color. gdi renderer supports now

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TODO: is it necessary to set the color?
This commit is contained in:
wang-bin
2013-03-01 19:24:26 +08:00
parent 15070ea70c
commit c168f0bd60
4 changed files with 21 additions and 5 deletions
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src/Direct2DRenderer.cpp
+6 -2
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@@ -191,8 +191,9 @@ void Direct2DRenderer::paintEvent(QPaintEvent *)
//http://www.daimakuai.net/?page_id=1574
d.render_target->BeginDraw();
d.render_target->SetTransform(D2D1::Matrix3x2F::Identity());
if (!d.bitmap) {
//TODO: It seems that the target's background keeps the color
if (update_background || !d.bitmap) {
d.update_background = false;
//TODO: It seems that the target's background keeps the color even if resize without clear color
d.render_target->Clear(D2D1::ColorF(D2D1::ColorF::Black));
return;
}
@@ -202,6 +203,7 @@ void Direct2DRenderer::paintEvent(QPaintEvent *)
d.out_rect.right(),
d.out_rect.bottom()
};
//d.render_target->SetTransform
d.render_target->DrawBitmap(d.bitmap
, &out_rect
, 1 //opacity
@@ -222,6 +224,7 @@ void Direct2DRenderer::resizeEvent(QResizeEvent *e)
resizeRenderer(e->size());
DPTR_D(Direct2DRenderer);
d.update_background = true;
if (d.render_target) {
D2D1_SIZE_U size = {
e->size().width(),
@@ -238,6 +241,7 @@ void Direct2DRenderer::resizeEvent(QResizeEvent *e)
void Direct2DRenderer::showEvent(QShowEvent *)
{
DPTR_D(Direct2DRenderer);
d.update_background = true;
useQPainter(d.use_qpainter);
d.createDeviceResource();
}