You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.2 KiB
73 lines
2.2 KiB
/* |
|
* Copyright 2013 Google Inc. |
|
* |
|
* Use of this source code is governed by a BSD-style license that can be |
|
* found in the LICENSE file. |
|
*/ |
|
#include "Sample.h" |
|
#include "SkCanvas.h" |
|
#include "SkPaint.h" |
|
#include "SkRandom.h" |
|
#include "SkShader.h" |
|
|
|
/** |
|
* Animated sample used to develop a predecessor of GrDrawOp combining. |
|
*/ |
|
class ManyRectsView : public Sample { |
|
private: |
|
enum { |
|
N = 1000, |
|
}; |
|
|
|
public: |
|
ManyRectsView() {} |
|
|
|
protected: |
|
bool onQuery(Sample::Event* evt) override { |
|
if (Sample::TitleQ(*evt)) { |
|
Sample::TitleR(evt, "ManyRects"); |
|
return true; |
|
} |
|
return this->INHERITED::onQuery(evt); |
|
} |
|
|
|
void onDrawContent(SkCanvas* canvas) override { |
|
SkISize dsize = canvas->getBaseLayerSize(); |
|
canvas->clear(0xFFF0E0F0); |
|
|
|
for (int i = 0; i < N; ++i) { |
|
SkRect rect = SkRect::MakeWH(SkIntToScalar(fRandom.nextRangeU(10, 100)), |
|
SkIntToScalar(fRandom.nextRangeU(10, 100))); |
|
int x = fRandom.nextRangeU(0, dsize.fWidth); |
|
int y = fRandom.nextRangeU(0, dsize.fHeight); |
|
canvas->save(); |
|
|
|
canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); |
|
// Uncomment to test rotated rect draw combining. |
|
if (false) { |
|
SkMatrix rotate; |
|
rotate.setRotate(fRandom.nextUScalar1() * 360, |
|
SkIntToScalar(x) + SkScalarHalf(rect.fRight), |
|
SkIntToScalar(y) + SkScalarHalf(rect.fBottom)); |
|
canvas->concat(rotate); |
|
} |
|
SkRect clipRect = rect; |
|
// This clip will always contain the entire rect. It's here to give the GPU op combining |
|
// code a little more challenge. |
|
clipRect.outset(10, 10); |
|
canvas->clipRect(clipRect); |
|
SkPaint paint; |
|
paint.setColor(fRandom.nextU()); |
|
canvas->drawRect(rect, paint); |
|
canvas->restore(); |
|
} |
|
} |
|
|
|
private: |
|
SkRandom fRandom; |
|
typedef Sample INHERITED; |
|
}; |
|
|
|
////////////////////////////////////////////////////////////////////////////// |
|
|
|
DEF_SAMPLE( return new ManyRectsView(); )
|
|
|