a8c183125f
BUG=skia: R=reed@google.com Author: reed@chromium.org Review URL: https://codereview.chromium.org/169063002 git-svn-id: http://skia.googlecode.com/svn/trunk@13473 2bbb7eff-a529-9590-31e7-b0007b416f81
80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SampleCode.h"
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#include "SkColorPriv.h"
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#include "SkShader.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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#include "SkUtils.h"
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static SkBitmap make_bitmap() {
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const int N = 1;
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SkPMColor c[N];
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for (int i = 0; i < N; i++) {
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c[i] = SkPackARGB32(0x80, 0x80, 0, 0);
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}
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SkColorTable* ctable = new SkColorTable(c, N);
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SkBitmap bm;
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bm.allocPixels(SkImageInfo::Make(1, 1, kIndex_8_SkColorType,
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kPremul_SkAlphaType),
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NULL, ctable);
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ctable->unref();
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bm.lockPixels();
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for (int y = 0; y < bm.height(); y++) {
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uint8_t* p = bm.getAddr8(0, y);
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for (int x = 0; x < bm.width(); x++) {
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p[x] = 0;
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}
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}
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bm.unlockPixels();
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return bm;
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}
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class TinyBitmapView : public SampleView {
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SkBitmap fBM;
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public:
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TinyBitmapView() {
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fBM = make_bitmap();
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this->setBGColor(0xFFDDDDDD);
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "TinyBitmap");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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static void setBitmapOpaque(SkBitmap* bm, bool isOpaque) {
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SkAutoLockPixels alp(*bm); // needed for ctable
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bm->setAlphaType(isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType);
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}
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virtual void onDrawContent(SkCanvas* canvas) {
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SkShader* s = SkShader::CreateBitmapShader(fBM, SkShader::kRepeat_TileMode,
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SkShader::kMirror_TileMode);
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SkPaint paint;
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paint.setShader(s)->unref();
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canvas->drawPaint(paint);
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}
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private:
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typedef SkView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new TinyBitmapView; }
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static SkViewRegister reg(MyFactory);
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