ff06af20fd
The motivation is be able to test the filters with scaled SkPicture playback in isolation from the issues that surround usage of drawSprite Review URL: https://codereview.appspot.com/7060071 git-svn-id: http://skia.googlecode.com/svn/trunk@7152 2bbb7eff-a529-9590-31e7-b0007b416f81
107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
/*
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* Copyright 2012 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 "gm.h"
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#include "SkBlendImageFilter.h"
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#include "SkBitmapSource.h"
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namespace skiagm {
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class ImageBlendGM : public GM {
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public:
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ImageBlendGM() : fInitialized(false) {
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this->setBGColor(0xFF000000);
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}
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protected:
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virtual SkString onShortName() {
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return SkString("blend");
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}
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void make_bitmap() {
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fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
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fBitmap.allocPixels();
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SkDevice device(fBitmap);
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SkCanvas canvas(&device);
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canvas.clear(0x00000000);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(0xD000D000);
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paint.setTextSize(SkIntToScalar(96));
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const char* str = "e";
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canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(65), paint);
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}
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void make_checkerboard() {
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fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
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fCheckerboard.allocPixels();
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SkDevice device(fCheckerboard);
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SkCanvas canvas(&device);
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canvas.clear(0x00000000);
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SkPaint darkPaint;
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darkPaint.setColor(0xFF404040);
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SkPaint lightPaint;
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lightPaint.setColor(0xFFA0A0A0);
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for (int y = 0; y < 80; y += 16) {
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for (int x = 0; x < 80; x += 16) {
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canvas.save();
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canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
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canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
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canvas.restore();
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}
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}
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}
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virtual SkISize onISize() {
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return make_isize(500, 100);
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}
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void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x) {
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canvas->save();
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canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), 0,
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SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
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canvas->drawBitmap(fBitmap, SkIntToScalar(x), 0, &paint);
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canvas->restore();
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}
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virtual void onDraw(SkCanvas* canvas) {
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if (!fInitialized) {
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make_bitmap();
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make_checkerboard();
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fInitialized = true;
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}
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canvas->clear(0x00000000);
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SkPaint paint;
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SkAutoTUnref<SkImageFilter> background(SkNEW_ARGS(SkBitmapSource, (fCheckerboard)));
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paint.setImageFilter(SkNEW_ARGS(SkBlendImageFilter, (SkBlendImageFilter::kNormal_Mode, background)))->unref();
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drawClippedBitmap(canvas, paint, 0);
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paint.setImageFilter(SkNEW_ARGS(SkBlendImageFilter, (SkBlendImageFilter::kMultiply_Mode, background)))->unref();
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drawClippedBitmap(canvas, paint, 100);
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paint.setImageFilter(SkNEW_ARGS(SkBlendImageFilter, (SkBlendImageFilter::kScreen_Mode, background)))->unref();
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drawClippedBitmap(canvas, paint, 200);
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paint.setImageFilter(SkNEW_ARGS(SkBlendImageFilter, (SkBlendImageFilter::kDarken_Mode, background)))->unref();
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drawClippedBitmap(canvas, paint, 300);
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paint.setImageFilter(SkNEW_ARGS(SkBlendImageFilter, (SkBlendImageFilter::kLighten_Mode, background)))->unref();
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drawClippedBitmap(canvas, paint, 400);
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}
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private:
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typedef GM INHERITED;
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SkBitmap fBitmap, fCheckerboard;
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bool fInitialized;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new ImageBlendGM; }
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static GMRegistry reg(MyFactory);
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}
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