/* * 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/gm.h" #include "include/core/SkBitmap.h" #include "include/core/SkBlendMode.h" #include "include/core/SkCanvas.h" #include "include/core/SkColor.h" #include "include/core/SkColorFilter.h" #include "include/core/SkImage.h" #include "include/core/SkImageFilter.h" #include "include/core/SkPaint.h" #include "include/core/SkRect.h" #include "include/core/SkRefCnt.h" #include "include/core/SkScalar.h" #include "include/core/SkSize.h" #include "include/core/SkString.h" #include "include/effects/SkImageFilters.h" #include "tools/ToolUtils.h" #include #include #define WIDTH 400 #define HEIGHT 200 #define MARGIN 12 namespace skiagm { class TileImageFilterGM : public GM { public: TileImageFilterGM() { this->setBGColor(0xFF000000); } protected: SkString onShortName() override { return SkString("tileimagefilter"); } SkISize onISize() override { return SkISize::Make(WIDTH, HEIGHT); } void onOnceBeforeDraw() override { fBitmap = SkImage::MakeFromBitmap( ToolUtils::create_string_bitmap(50, 50, 0xD000D000, 10, 45, 50, "e")); fCheckerboard = SkImage::MakeFromBitmap( ToolUtils::create_checkerboard_bitmap(80, 80, 0xFFA0A0A0, 0xFF404040, 8)); } void onDraw(SkCanvas* canvas) override { canvas->clear(SK_ColorBLACK); SkPaint red; red.setColor(SK_ColorRED); red.setStyle(SkPaint::kStroke_Style); SkPaint blue; blue.setColor(SK_ColorBLUE); blue.setStyle(SkPaint::kStroke_Style); int x = 0, y = 0; { for (size_t i = 0; i < 4; i++) { sk_sp image = (i & 0x01) ? fCheckerboard : fBitmap; SkRect srcRect = SkRect::MakeXYWH(SkIntToScalar(image->width()/4), SkIntToScalar(image->height()/4), SkIntToScalar(image->width()/(i+1)), SkIntToScalar(image->height()/(i+1))); SkRect dstRect = SkRect::MakeXYWH(SkIntToScalar(i * 8), SkIntToScalar(i * 4), SkIntToScalar(image->width() - i * 12), SkIntToScalar(image->height()) - i * 12); sk_sp tileInput(SkImageFilters::Image(image)); sk_sp filter(SkImageFilters::Tile(srcRect, dstRect, std::move(tileInput))); canvas->save(); canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); SkPaint paint; paint.setImageFilter(std::move(filter)); canvas->drawImage(fBitmap.get(), 0, 0, &paint); canvas->drawRect(srcRect, red); canvas->drawRect(dstRect, blue); canvas->restore(); x += image->width() + MARGIN; if (x + image->width() > WIDTH) { x = 0; y += image->height() + MARGIN; } } } { float matrix[20] = { 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0 }; SkRect srcRect = SkRect::MakeWH(SkIntToScalar(fBitmap->width()), SkIntToScalar(fBitmap->height())); SkRect dstRect = SkRect::MakeWH(SkIntToScalar(fBitmap->width() * 2), SkIntToScalar(fBitmap->height() * 2)); sk_sp tile(SkImageFilters::Tile(srcRect, dstRect, nullptr)); sk_sp cf(SkColorFilters::Matrix(matrix)); SkPaint paint; paint.setImageFilter(SkImageFilters::ColorFilter(std::move(cf), std::move(tile))); canvas->save(); canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); canvas->clipRect(dstRect); canvas->saveLayer(&dstRect, &paint); canvas->drawImage(fBitmap.get(), 0, 0); canvas->restore(); canvas->drawRect(srcRect, red); canvas->drawRect(dstRect, blue); canvas->restore(); } // test that the crop rect properly applies to the tile image filter { canvas->translate(0, SkIntToScalar(100)); SkRect srcRect = SkRect::MakeXYWH(0, 0, 50, 50); SkRect dstRect = SkRect::MakeXYWH(0, 0, 100, 100); SkIRect cropRect = SkIRect::MakeXYWH(5, 5, 40, 40); sk_sp greenCF = SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrc); sk_sp green(SkImageFilters::ColorFilter(std::move(greenCF), nullptr, &cropRect)); SkPaint paint; paint.setColor(SK_ColorRED); paint.setImageFilter(SkImageFilters::Tile(srcRect, dstRect, std::move(green))); canvas->drawRect(dstRect, paint); } } private: sk_sp fBitmap, fCheckerboard; typedef GM INHERITED; }; ////////////////////////////////////////////////////////////////////////////// DEF_GM(return new TileImageFilterGM;) } // namespace skiagm