1 /* 2 * Copyright 2016 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm/gm.h" 9 #include "include/core/SkBlendMode.h" 10 #include "include/core/SkCanvas.h" 11 #include "include/core/SkColor.h" 12 #include "include/core/SkFont.h" 13 #include "include/core/SkFontTypes.h" 14 #include "include/core/SkPaint.h" 15 #include "include/core/SkRect.h" 16 #include "include/core/SkRefCnt.h" 17 #include "include/core/SkScalar.h" 18 #include "include/core/SkSize.h" 19 #include "include/core/SkString.h" 20 #include "include/core/SkTextBlob.h" 21 #include "include/core/SkTypeface.h" 22 #include "tools/ToolUtils.h" 23 #include "tools/fonts/FontToolUtils.h" 24 25 #include <string.h> 26 27 namespace skiagm { 28 class TextBlobBlockReordering : public GM { 29 public: 30 // This gm tests that textblobs translate properly when their draw order is different from their 31 // flush order TextBlobBlockReordering()32 TextBlobBlockReordering() { } 33 34 protected: onOnceBeforeDraw()35 void onOnceBeforeDraw() override { 36 SkTextBlobBuilder builder; 37 38 // make textblob 39 // Large text is used to trigger atlas eviction 40 SkFont font(ToolUtils::DefaultPortableTypeface(), 56); 41 font.setEdging(SkFont::Edging::kAlias); 42 const char* text = "AB"; 43 44 SkRect bounds; 45 font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds); 46 47 SkScalar yOffset = bounds.height(); 48 ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset - 30); 49 50 // build 51 fBlob = builder.make(); 52 } 53 getName() const54 SkString getName() const override { return SkString("textblobblockreordering"); } 55 getISize()56 SkISize getISize() override { return SkISize::Make(kWidth, kHeight); } 57 58 // This draws the same text blob 3 times. The second draw used a different xfer mode so its 59 // GrDrawOp doesn't get combined with the first and third. Ultimately, they will be flushed in 60 // the order first, third, and then second. onDraw(SkCanvas * canvas)61 void onDraw(SkCanvas* canvas) override { 62 canvas->drawColor(SK_ColorGRAY); 63 64 SkPaint paint; 65 canvas->translate(10, 40); 66 67 SkRect bounds = fBlob->bounds(); 68 const int yDelta = SkScalarFloorToInt(bounds.height()) + 20; 69 const int xDelta = SkScalarFloorToInt(bounds.width()); 70 71 canvas->drawTextBlob(fBlob, 0, 0, paint); 72 73 canvas->translate(SkIntToScalar(xDelta), SkIntToScalar(yDelta)); 74 75 // Draw a rect where the text should be, and then twiddle the xfermode so we don't combine. 76 SkPaint redPaint; 77 redPaint.setColor(SK_ColorRED); 78 canvas->drawRect(bounds, redPaint); 79 SkPaint srcInPaint(paint); 80 srcInPaint.setBlendMode(SkBlendMode::kSrcIn); 81 canvas->drawTextBlob(fBlob, 0, 0, srcInPaint); 82 83 canvas->translate(SkIntToScalar(xDelta), SkIntToScalar(yDelta)); 84 canvas->drawTextBlob(fBlob, 0, 0, paint); 85 } 86 87 private: 88 sk_sp<SkTextBlob> fBlob; 89 90 inline static constexpr int kWidth = 275; 91 inline static constexpr int kHeight = 200; 92 93 using INHERITED = GM; 94 }; 95 96 ////////////////////////////////////////////////////////////////////////////// 97 98 DEF_GM(return new TextBlobBlockReordering;) 99 } // namespace skiagm 100