/* * Copyright 2013 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "gm.h" #include "SkTileImageFilter.h" #include "SkBitmapSource.h" #define WIDTH 400 #define HEIGHT 100 #define MARGIN 12 namespace skiagm { class TileImageFilterGM : public GM { public: TileImageFilterGM() : fInitialized(false) { this->setBGColor(0xFF000000); } protected: virtual SkString onShortName() { return SkString("tileimagefilter"); } void make_bitmap() { fBitmap.allocN32Pixels(80, 80); SkCanvas canvas(fBitmap); canvas.clear(0xFF000000); SkPaint paint; paint.setAntiAlias(true); paint.setColor(0xD000D000); paint.setTextSize(SkIntToScalar(96)); const char* str = "e"; canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(65), paint); } void make_checkerboard() { fCheckerboard.allocN32Pixels(80, 80); SkCanvas canvas(fCheckerboard); canvas.clear(0x00000000); SkPaint darkPaint; darkPaint.setColor(0xFF404040); SkPaint lightPaint; lightPaint.setColor(0xFFA0A0A0); for (int y = 0; y < 80; y += 16) { for (int x = 0; x < 80; x += 16) { canvas.save(); canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint); canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint); canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint); canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint); canvas.restore(); } } } virtual SkISize onISize() { return make_isize(WIDTH, HEIGHT); } virtual void onDraw(SkCanvas* canvas) { if (!fInitialized) { make_bitmap(); make_checkerboard(); fInitialized = true; } canvas->clear(0x00000000); SkPaint paint; int x = 0, y = 0; for (size_t i = 0; i < 4; i++) { SkBitmap* bitmap = (i & 0x01) ? &fCheckerboard : &fBitmap; SkRect srcRect = SkRect::MakeXYWH(SkIntToScalar(bitmap->width()/4), SkIntToScalar(bitmap->height()/4), SkIntToScalar(bitmap->width()/(i+1)), SkIntToScalar(bitmap->height()/(i+1))); SkRect dstRect = SkRect::MakeXYWH(SkIntToScalar(i * 8), SkIntToScalar(i * 4), SkIntToScalar(bitmap->width() - i * 12), SkIntToScalar(bitmap->height()) - i * 12); SkAutoTUnref tileInput(SkBitmapSource::Create(*bitmap)); SkAutoTUnref filter( SkTileImageFilter::Create(srcRect, dstRect, tileInput)); canvas->save(); canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); paint.setImageFilter(filter); canvas->drawBitmap(fBitmap, 0, 0, &paint); canvas->restore(); x += bitmap->width() + MARGIN; if (x + bitmap->width() > WIDTH) { x = 0; y += bitmap->height() + MARGIN; } } } private: typedef GM INHERITED; SkBitmap fBitmap, fCheckerboard; bool fInitialized; }; ////////////////////////////////////////////////////////////////////////////// static GM* MyFactory(void*) { return new TileImageFilterGM; } static GMRegistry reg(MyFactory); }