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.
109 lines
3.1 KiB
109 lines
3.1 KiB
/*
|
|
* Copyright 2011 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "include/core/SkBitmap.h"
|
|
#include "include/core/SkCanvas.h"
|
|
#include "include/core/SkColorPriv.h"
|
|
#include "include/core/SkShader.h"
|
|
#include "samplecode/Sample.h"
|
|
|
|
static const SkBlendMode gModes[] = {
|
|
SkBlendMode::kClear,
|
|
SkBlendMode::kSrc,
|
|
SkBlendMode::kDst,
|
|
SkBlendMode::kSrcOver,
|
|
SkBlendMode::kDstOver,
|
|
SkBlendMode::kSrcIn,
|
|
SkBlendMode::kDstIn,
|
|
SkBlendMode::kSrcOut,
|
|
SkBlendMode::kDstOut,
|
|
SkBlendMode::kSrcATop,
|
|
SkBlendMode::kDstATop,
|
|
SkBlendMode::kXor,
|
|
};
|
|
|
|
const int gWidth = 64;
|
|
const int gHeight = 64;
|
|
const SkScalar W = SkIntToScalar(gWidth);
|
|
const SkScalar H = SkIntToScalar(gHeight);
|
|
|
|
static SkScalar drawCell(SkCanvas* canvas, SkBlendMode mode, SkAlpha a0, SkAlpha a1) {
|
|
SkPaint paint;
|
|
paint.setAntiAlias(true);
|
|
|
|
SkRect r = SkRect::MakeWH(W, H);
|
|
r.inset(W/10, H/10);
|
|
|
|
paint.setColor(SK_ColorBLUE);
|
|
paint.setAlpha(a0);
|
|
canvas->drawOval(r, paint);
|
|
|
|
paint.setColor(SK_ColorRED);
|
|
paint.setAlpha(a1);
|
|
paint.setBlendMode(mode);
|
|
|
|
SkScalar offset = SK_Scalar1 / 3;
|
|
SkRect rect = SkRect::MakeXYWH(W / 4 + offset,
|
|
H / 4 + offset,
|
|
W / 2, H / 2);
|
|
canvas->drawRect(rect, paint);
|
|
|
|
return H;
|
|
}
|
|
|
|
static sk_sp<SkShader> make_bg_shader() {
|
|
SkBitmap bm;
|
|
bm.allocN32Pixels(2, 2);
|
|
*bm.getAddr32(0, 0) = *bm.getAddr32(1, 1) = 0xFFFFFFFF;
|
|
*bm.getAddr32(1, 0) = *bm.getAddr32(0, 1) = SkPackARGB32(0xFF, 0xCC,
|
|
0xCC, 0xCC);
|
|
|
|
return bm.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, SkSamplingOptions(),
|
|
SkMatrix::Scale(6, 6));
|
|
}
|
|
|
|
class AARectsModesView : public Sample {
|
|
SkPaint fBGPaint;
|
|
|
|
void onOnceBeforeDraw() override {
|
|
fBGPaint.setShader(make_bg_shader());
|
|
}
|
|
|
|
SkString name() override { return SkString("AARectsModes"); }
|
|
|
|
void onDrawContent(SkCanvas* canvas) override {
|
|
const SkRect bounds = SkRect::MakeWH(W, H);
|
|
static const SkAlpha gAlphaValue[] = { 0xFF, 0x88, 0x88 };
|
|
|
|
canvas->translate(SkIntToScalar(4), SkIntToScalar(4));
|
|
|
|
for (int alpha = 0; alpha < 4; ++alpha) {
|
|
canvas->save();
|
|
canvas->save();
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); ++i) {
|
|
if (6 == i) {
|
|
canvas->restore();
|
|
canvas->translate(W * 5, 0);
|
|
canvas->save();
|
|
}
|
|
|
|
canvas->drawRect(bounds, fBGPaint);
|
|
canvas->saveLayer(&bounds, nullptr);
|
|
SkScalar dy = drawCell(canvas, gModes[i], gAlphaValue[alpha & 1],
|
|
gAlphaValue[alpha & 2]);
|
|
canvas->restore();
|
|
|
|
canvas->translate(0, dy * 5 / 4);
|
|
}
|
|
canvas->restore();
|
|
canvas->restore();
|
|
canvas->translate(W * 5 / 4, 0);
|
|
}
|
|
}
|
|
};
|
|
DEF_SAMPLE( return new AARectsModesView(); )
|