| /* |
| * Copyright 2011 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/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPathBuilder.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "src/core/SkCanvasPriv.h" |
| #include "tools/ToolUtils.h" |
| |
| /** Draw a 2px border around the target, then red behind the target; |
| set the clip to match the target, then draw >> the target in blue. |
| */ |
| |
| static void draw(SkCanvas* canvas, SkRect& target, int x, int y) { |
| SkPaint borderPaint; |
| borderPaint.setColor(SkColorSetRGB(0x0, 0xDD, 0x0)); |
| borderPaint.setAntiAlias(true); |
| SkPaint backgroundPaint; |
| backgroundPaint.setColor(SkColorSetRGB(0xDD, 0x0, 0x0)); |
| backgroundPaint.setAntiAlias(true); |
| SkPaint foregroundPaint; |
| foregroundPaint.setColor(SkColorSetRGB(0x0, 0x0, 0xDD)); |
| foregroundPaint.setAntiAlias(true); |
| |
| canvas->save(); |
| canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); |
| target.inset(SkIntToScalar(-2), SkIntToScalar(-2)); |
| canvas->drawRect(target, borderPaint); |
| target.inset(SkIntToScalar(2), SkIntToScalar(2)); |
| canvas->drawRect(target, backgroundPaint); |
| canvas->clipRect(target, true); |
| target.inset(SkIntToScalar(-4), SkIntToScalar(-4)); |
| canvas->drawRect(target, foregroundPaint); |
| canvas->restore(); |
| } |
| |
| static void draw_square(SkCanvas* canvas, int x, int y) { |
| SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 10 * SK_Scalar1)); |
| draw(canvas, target, x, y); |
| } |
| |
| static void draw_column(SkCanvas* canvas, int x, int y) { |
| SkRect target (SkRect::MakeWH(1 * SK_Scalar1, 10 * SK_Scalar1)); |
| draw(canvas, target, x, y); |
| } |
| |
| static void draw_bar(SkCanvas* canvas, int x, int y) { |
| SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 1 * SK_Scalar1)); |
| draw(canvas, target, x, y); |
| } |
| |
| static void draw_rect_tests(SkCanvas* canvas) { |
| draw_square(canvas, 10, 10); |
| draw_column(canvas, 30, 10); |
| draw_bar(canvas, 10, 30); |
| } |
| |
| /** |
| Test a set of clipping problems discovered while writing blitAntiRect, |
| and test all the code paths through the clipping blitters. |
| Each region should show as a blue center surrounded by a 2px green |
| border, with no red. |
| */ |
| DEF_SIMPLE_GM(aaclip, canvas, 240, 120) { |
| // Initial pixel-boundary-aligned draw |
| draw_rect_tests(canvas); |
| |
| // Repeat 4x with .2, .4, .6, .8 px offsets |
| canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5); |
| canvas->translate(SkIntToScalar(50), 0); |
| draw_rect_tests(canvas); |
| |
| canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5); |
| canvas->translate(SkIntToScalar(50), 0); |
| draw_rect_tests(canvas); |
| |
| canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5); |
| canvas->translate(SkIntToScalar(50), 0); |
| draw_rect_tests(canvas); |
| |
| canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5); |
| canvas->translate(SkIntToScalar(50), 0); |
| draw_rect_tests(canvas); |
| } |
| |
| ///////////////////////////////////////////////////////////////////////// |
| |
| #ifdef SK_BUILD_FOR_MAC |
| |
| #include "include/utils/mac/SkCGUtils.h" |
| |
| static std::unique_ptr<SkCanvas> make_canvas(const SkBitmap& bm) { |
| return SkCanvas::MakeRasterDirect(bm.info(), bm.getPixels(), bm.rowBytes()); |
| } |
| |
| static void test_image(SkCanvas* canvas, const SkImageInfo& info) { |
| SkBitmap bm; |
| bm.allocPixels(info); |
| |
| if (info.isOpaque()) { |
| bm.eraseColor(SK_ColorGREEN); |
| } else { |
| bm.eraseColor(0); |
| } |
| |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setColor(SK_ColorBLUE); |
| make_canvas(bm)->drawCircle(50, 50, 49, paint); |
| canvas->drawImage(bm.asImage(), 10, 10); |
| |
| CGImageRef image = SkCreateCGImageRefWithColorspace(bm, nullptr); |
| |
| SkBitmap bm2; |
| SkCreateBitmapFromCGImage(&bm2, image); |
| canvas->drawImage(bm2.asImage(), 10, 120); |
| canvas->drawImage(SkMakeImageFromCGImage(image), 10, 120 + bm2.height() + 10); |
| |
| CGImageRelease(image); |
| } |
| |
| DEF_SIMPLE_GM(cgimage, canvas, 800, 250) { |
| const struct { |
| SkColorType fCT; |
| SkAlphaType fAT; |
| } rec[] = { |
| { kRGB_565_SkColorType, kOpaque_SkAlphaType }, |
| |
| { kRGBA_8888_SkColorType, kPremul_SkAlphaType }, |
| { kRGBA_8888_SkColorType, kUnpremul_SkAlphaType }, |
| { kRGBA_8888_SkColorType, kOpaque_SkAlphaType }, |
| |
| { kBGRA_8888_SkColorType, kPremul_SkAlphaType }, |
| { kBGRA_8888_SkColorType, kUnpremul_SkAlphaType }, |
| { kBGRA_8888_SkColorType, kOpaque_SkAlphaType }, |
| }; |
| |
| for (size_t i = 0; i < std::size(rec); ++i) { |
| SkImageInfo info = SkImageInfo::Make(100, 100, rec[i].fCT, rec[i].fAT); |
| test_image(canvas, info); |
| canvas->translate(info.width() + 10, 0); |
| } |
| } |
| |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| // https://bug.skia.org/3716 |
| class ClipCubicGM : public skiagm::GM { |
| const SkScalar W = 100; |
| const SkScalar H = 240; |
| |
| SkPath fVPath, fHPath; |
| public: |
| ClipCubicGM() { |
| fVPath = SkPathBuilder().moveTo(W, 0) |
| .cubicTo(W, H-10, 0, 10, 0, H) |
| .detach(); |
| |
| SkMatrix pivot; |
| pivot.setRotate(90, W/2, H/2); |
| fHPath = fVPath.makeTransform(pivot); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("clipcubic"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(400, 410); |
| } |
| |
| void doDraw(SkCanvas* canvas, const SkPath& path) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| |
| paint.setColor(0xFFCCCCCC); |
| canvas->drawPath(path, paint); |
| |
| paint.setColor(SK_ColorRED); |
| paint.setStyle(SkPaint::kStroke_Style); |
| canvas->drawPath(path, paint); |
| } |
| |
| void drawAndClip(SkCanvas* canvas, const SkPath& path, SkScalar dx, SkScalar dy) { |
| SkAutoCanvasRestore acr(canvas, true); |
| |
| SkRect r = SkRect::MakeXYWH(0, H/4, W, H/2); |
| SkPaint paint; |
| paint.setColor(ToolUtils::color_to_565(0xFF8888FF)); |
| |
| canvas->drawRect(r, paint); |
| this->doDraw(canvas, path); |
| |
| canvas->translate(dx, dy); |
| |
| canvas->drawRect(r, paint); |
| canvas->clipRect(r); |
| this->doDraw(canvas, path); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->translate(80, 10); |
| this->drawAndClip(canvas, fVPath, 200, 0); |
| canvas->translate(0, 200); |
| this->drawAndClip(canvas, fHPath, 200, 0); |
| } |
| |
| private: |
| using INHERITED = skiagm::GM; |
| }; |
| DEF_GM(return new ClipCubicGM;) |