skia2/samplecode/SampleRepeatTile.cpp
Mike Reed 75ae421c24 IWYU -- SkShader.h
Bug: skia:
Change-Id: I57bffc14c4888627a22158e35f3ac3b762138f02
Reviewed-on: https://skia-review.googlesource.com/98520
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2018-01-23 18:08:30 +00:00

75 lines
1.9 KiB
C++

/*
* 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 "SampleCode.h"
#include "SkView.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkShader.h"
static void make_bitmap(SkBitmap* bm) {
const int W = 100;
const int H = 100;
bm->allocN32Pixels(W, H);
SkPaint paint;
SkCanvas canvas(*bm);
canvas.drawColor(SK_ColorWHITE);
const SkColor colors[] = {
SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE
};
for (int ix = 0; ix < W; ix += 1) {
SkScalar x = SkIntToScalar(ix) + SK_ScalarHalf;
paint.setColor(colors[ix & 3]);
canvas.drawLine(x, 0, x, SkIntToScalar(H - 1), paint);
}
paint.setColor(SK_ColorGRAY);
canvas.drawLine(0, 0, SkIntToScalar(W), 0, paint);
}
static void make_paint(SkPaint* paint, SkShader::TileMode tm) {
SkBitmap bm;
make_bitmap(&bm);
paint->setShader(SkShader::MakeBitmapShader(bm, tm, tm));
}
class RepeatTileView : public SampleView {
public:
RepeatTileView() {
this->setBGColor(SK_ColorGRAY);
}
protected:
// overrides from SkEventSink
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "RepeatTile");
return true;
}
return this->INHERITED::onQuery(evt);
}
void onDrawContent(SkCanvas* canvas) override {
SkPaint paint;
make_paint(&paint, SkShader::kRepeat_TileMode);
// canvas->scale(SK_Scalar1*2, SK_Scalar1);
canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
canvas->drawPaint(paint);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new RepeatTileView; }
static SkViewRegister reg(MyFactory);