| /* |
| * 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.setConfig(SkBitmap::kARGB_8888_Config, 80, 80); |
| fBitmap.allocPixels(); |
| SkBitmapDevice device(fBitmap); |
| SkCanvas canvas(&device); |
| canvas.clear(0x00000000); |
| 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.setConfig(SkBitmap::kARGB_8888_Config, 80, 80); |
| fCheckerboard.allocPixels(); |
| SkBitmapDevice device(fCheckerboard); |
| SkCanvas canvas(&device); |
| 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); |
| } |
| |
| void drawClippedBitmap(SkCanvas* canvas, const SkBitmap& bitmap, const SkPaint& paint, |
| SkScalar x, SkScalar y) { |
| canvas->save(); |
| canvas->translate(x, y); |
| canvas->clipRect(SkRect::MakeXYWH(0, 0, |
| SkIntToScalar(bitmap.width()), SkIntToScalar(bitmap.height()))); |
| canvas->drawBitmap(bitmap, 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| 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 * 4), |
| SkIntToScalar(bitmap->height()) - i * 8); |
| SkAutoTUnref<SkImageFilter> tileInput(SkNEW_ARGS(SkBitmapSource, (*bitmap))); |
| SkAutoTUnref<SkImageFilter> filter(SkNEW_ARGS( |
| SkTileImageFilter, (srcRect, dstRect, tileInput))); |
| paint.setImageFilter(filter); |
| drawClippedBitmap(canvas, *bitmap, paint, SkIntToScalar(x), SkIntToScalar(y)); |
| 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); |
| |
| } |