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| 1 /* |
| 2 * Copyright 2015 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "gm.h" |
| 9 |
| 10 #include "SkCanvas.h" |
| 11 #include "SkSurface.h" |
| 12 #include "SkTextBlob.h" |
| 13 |
| 14 // This tests that we don't try to reuse textblobs from the GPU textblob cache a
cross pixel geometry |
| 15 // changes when we have LCD. crbug/486744 |
| 16 namespace skiagm { |
| 17 class TextBlobGeometryChange : public GM { |
| 18 public: |
| 19 TextBlobGeometryChange() { } |
| 20 |
| 21 protected: |
| 22 SkString onShortName() override { |
| 23 return SkString("textblobgeometrychange"); |
| 24 } |
| 25 |
| 26 SkISize onISize() override { |
| 27 return SkISize::Make(kWidth, kHeight); |
| 28 } |
| 29 |
| 30 void onDraw(SkCanvas* canvas) override { |
| 31 const char text[] = "Hamburgefons"; |
| 32 |
| 33 SkPaint paint; |
| 34 sk_tool_utils::set_portable_typeface(&paint); |
| 35 paint.setTextSize(20); |
| 36 paint.setAntiAlias(true); |
| 37 paint.setLCDRenderText(true); |
| 38 |
| 39 SkTextBlobBuilder builder; |
| 40 |
| 41 sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, 10); |
| 42 |
| 43 SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 44 |
| 45 SkImageInfo info = SkImageInfo::MakeN32Premul(200, 200); |
| 46 SkSurfaceProps props(0, kUnknown_SkPixelGeometry); |
| 47 SkAutoTUnref<SkSurface> surface(canvas->newSurface(info, &props)); |
| 48 if (surface) { |
| 49 SkCanvas* c = surface->getCanvas(); |
| 50 |
| 51 // LCD text on white background |
| 52 SkRect rect = SkRect::MakeLTRB(0.f, 0.f, SkIntToScalar(kWidth), kHei
ght / 2.f); |
| 53 SkPaint rectPaint; |
| 54 rectPaint.setColor(0xffffffff); |
| 55 canvas->drawRect(rect, rectPaint); |
| 56 canvas->drawTextBlob(blob.get(), 10, 50, paint); |
| 57 |
| 58 // This should not look garbled since we should disable LCD text in
this case |
| 59 // (i.e., unknown pixel geometry) |
| 60 c->clear(0x00ffffff); |
| 61 c->drawTextBlob(blob.get(), 10, 150, paint); |
| 62 surface->draw(canvas, 0, 0, nullptr); |
| 63 } else { |
| 64 const char* text = "This test requires a surface"; |
| 65 size_t len = strlen(text); |
| 66 SkPaint paint; |
| 67 canvas->drawText(text, len, 10, 100, paint); |
| 68 } |
| 69 } |
| 70 |
| 71 private: |
| 72 static const int kWidth = 200; |
| 73 static const int kHeight = 200; |
| 74 |
| 75 typedef GM INHERITED; |
| 76 }; |
| 77 |
| 78 ////////////////////////////////////////////////////////////////////////////// |
| 79 |
| 80 DEF_GM( return SkNEW(TextBlobGeometryChange); ) |
| 81 } |
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