skia2/samplecode/SampleTinyBitmap.cpp
rmistry@google.com ae933ce0ea Result of running tools/sanitize_source_files.py (which was added in https://codereview.appspot.com/6465078/)
This CL is part III of IV (I broke down the 1280 files into 4 CLs).
Review URL: https://codereview.appspot.com/6475053

git-svn-id: http://skia.googlecode.com/svn/trunk@5264 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-08-23 18:19:56 +00:00

84 lines
2.1 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 "SkColorPriv.h"
#include "SkShader.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkUtils.h"
static SkBitmap make_bitmap() {
SkBitmap bm;
const int N = 1;
SkColorTable* ctable = new SkColorTable(N);
SkPMColor* c = ctable->lockColors();
for (int i = 0; i < N; i++) {
c[i] = SkPackARGB32(0x80, 0x80, 0, 0);
}
ctable->unlockColors(true);
bm.setConfig(SkBitmap::kIndex8_Config, 1, 1);
bm.allocPixels(ctable);
ctable->unref();
bm.lockPixels();
for (int y = 0; y < bm.height(); y++) {
uint8_t* p = bm.getAddr8(0, y);
for (int x = 0; x < bm.width(); x++) {
p[x] = 0;
}
}
bm.unlockPixels();
return bm;
}
class TinyBitmapView : public SampleView {
SkBitmap fBM;
public:
TinyBitmapView() {
fBM = make_bitmap();
this->setBGColor(0xFFDDDDDD);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "TinyBitmap");
return true;
}
return this->INHERITED::onQuery(evt);
}
static void setBitmapOpaque(SkBitmap* bm, bool isOpaque) {
SkAutoLockPixels alp(*bm); // needed for ctable
bm->setIsOpaque(isOpaque);
SkColorTable* ctable = bm->getColorTable();
if (ctable) {
ctable->setIsOpaque(isOpaque);
}
}
virtual void onDrawContent(SkCanvas* canvas) {
SkShader* s = SkShader::CreateBitmapShader(fBM, SkShader::kRepeat_TileMode,
SkShader::kMirror_TileMode);
SkPaint paint;
paint.setShader(s)->unref();
canvas->drawPaint(paint);
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new TinyBitmapView; }
static SkViewRegister reg(MyFactory);