| /* |
| * Copyright 2012 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 "SkCanvas.h" |
| #include "SkGradientShader.h" |
| #include "SkPath.h" |
| |
| static void make_bm(SkBitmap* bm, int width, int height, SkColor colors[2]) { |
| bm->allocN32Pixels(width, height); |
| SkCanvas canvas(*bm); |
| SkPoint center = {SkIntToScalar(width)/2, SkIntToScalar(height)/2}; |
| SkScalar radius = 40; |
| SkShader* shader = SkGradientShader::CreateRadial(center, radius, colors, NULL, 2, |
| SkShader::kMirror_TileMode); |
| SkPaint paint; |
| paint.setShader(shader)->unref(); |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| canvas.drawPaint(paint); |
| bm->setImmutable(); |
| } |
| |
| static void show_bm(SkCanvas* canvas, int width, int height, SkColor colors[2]) { |
| SkBitmap bm; |
| make_bm(&bm, width, height, colors); |
| |
| SkPaint paint; |
| SkRect r; |
| SkIRect ir; |
| |
| paint.setStyle(SkPaint::kStroke_Style); |
| |
| ir.set(0, 0, 128, 128); |
| r.set(ir); |
| |
| canvas->save(); |
| canvas->clipRect(r); |
| canvas->drawBitmap(bm, 0, 0, NULL); |
| canvas->restore(); |
| canvas->drawRect(r, paint); |
| |
| r.offset(SkIntToScalar(150), 0); |
| // exercises extract bitmap, but not shader |
| canvas->drawBitmapRect(bm, ir, r, NULL); |
| canvas->drawRect(r, paint); |
| |
| r.offset(SkIntToScalar(150), 0); |
| // exercises bitmapshader |
| canvas->drawBitmapRect(bm, NULL, r, NULL); |
| canvas->drawRect(r, paint); |
| } |
| |
| class VeryLargeBitmapGM : public skiagm::GM { |
| public: |
| VeryLargeBitmapGM() {} |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("verylargebitmap"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(500, 600); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| int veryBig = 65*1024; // 64K < size |
| int big = 33*1024; // 32K < size < 64K |
| // smaller than many max texture sizes, but large enough to gpu-tile for memory reasons. |
| int medium = 5*1024; |
| int small = 150; |
| |
| SkColor colors[2]; |
| |
| canvas->translate(SkIntToScalar(10), SkIntToScalar(10)); |
| colors[0] = SK_ColorRED; |
| colors[1] = SK_ColorGREEN; |
| show_bm(canvas, small, small, colors); |
| canvas->translate(0, SkIntToScalar(150)); |
| |
| colors[0] = SK_ColorBLUE; |
| colors[1] = SK_ColorMAGENTA; |
| show_bm(canvas, big, small, colors); |
| canvas->translate(0, SkIntToScalar(150)); |
| |
| colors[0] = SK_ColorMAGENTA; |
| colors[1] = SK_ColorYELLOW; |
| show_bm(canvas, medium, medium, colors); |
| canvas->translate(0, SkIntToScalar(150)); |
| |
| colors[0] = SK_ColorGREEN; |
| colors[1] = SK_ColorYELLOW; |
| // as of this writing, the raster code will fail to draw the scaled version |
| // since it has a 64K limit on x,y coordinates... (but gpu should succeed) |
| show_bm(canvas, veryBig, small, colors); |
| } |
| |
| private: |
| typedef skiagm::GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static skiagm::GM* MyFactory(void*) { return new VeryLargeBitmapGM; } |
| static skiagm::GMRegistry reg(MyFactory); |