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| 1 /* | 1 /* |
| 2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "gm.h" | 8 #include "gm.h" |
| 9 | 9 |
| 10 #include "SkCanvas.h" | 10 #include "SkCanvas.h" |
| 11 #include "SkGradientShader.h" | 11 #include "SkGradientShader.h" |
| 12 #include "SkPoint.h" | 12 #include "SkPoint.h" |
| 13 #include "SkShader.h" | 13 #include "SkShader.h" |
| 14 #include "SkTextBlob.h" | 14 #include "SkTextBlob.h" |
| 15 #include "SkTDArray.h" | 15 #include "SkTDArray.h" |
| 16 #include "SkTypeface.h" | 16 #include "SkTypeface.h" |
| 17 | 17 |
| 18 // This GM exercises drawTextBlob offset vs. shader space behavior. | 18 // This GM exercises drawTextBlob offset vs. shader space behavior. |
| 19 class TextBlobShaderGM : public skiagm::GM { | 19 class TextBlobShaderGM : public skiagm::GM { |
| 20 public: | 20 public: |
| 21 TextBlobShaderGM(const char* txt) { | 21 TextBlobShaderGM(const char* txt) { |
| 22 SkPaint p; | 22 SkPaint p; |
| 23 sk_tool_utils::set_portable_typeface(&p); | 23 sk_tool_utils::set_portable_typeface(&p); |
| 24 size_t txtLen = strlen(txt); | 24 size_t txtLen = strlen(txt); |
| 25 fGlyphs.append(p.textToGlyphs(txt, txtLen, NULL)); | 25 fGlyphs.append(p.textToGlyphs(txt, txtLen, nullptr)); |
| 26 p.textToGlyphs(txt, txtLen, fGlyphs.begin()); | 26 p.textToGlyphs(txt, txtLen, fGlyphs.begin()); |
| 27 } | 27 } |
| 28 | 28 |
| 29 protected: | 29 protected: |
| 30 | 30 |
| 31 void onOnceBeforeDraw() override { | 31 void onOnceBeforeDraw() override { |
| 32 SkPaint p; | 32 SkPaint p; |
| 33 p.setAntiAlias(true); | 33 p.setAntiAlias(true); |
| 34 p.setSubpixelText(true); | 34 p.setSubpixelText(true); |
| 35 p.setTextSize(30); | 35 p.setTextSize(30); |
| 36 p.setTextEncoding(SkPaint::kGlyphID_TextEncoding); | 36 p.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| 37 sk_tool_utils::set_portable_typeface(&p); | 37 sk_tool_utils::set_portable_typeface(&p); |
| 38 | 38 |
| 39 SkTextBlobBuilder builder; | 39 SkTextBlobBuilder builder; |
| 40 int glyphCount = fGlyphs.count(); | 40 int glyphCount = fGlyphs.count(); |
| 41 const SkTextBlobBuilder::RunBuffer* run; | 41 const SkTextBlobBuilder::RunBuffer* run; |
| 42 | 42 |
| 43 run = &builder.allocRun(p, glyphCount, 10, 10, NULL); | 43 run = &builder.allocRun(p, glyphCount, 10, 10, nullptr); |
| 44 memcpy(run->glyphs, fGlyphs.begin(), glyphCount * sizeof(uint16_t)); | 44 memcpy(run->glyphs, fGlyphs.begin(), glyphCount * sizeof(uint16_t)); |
| 45 | 45 |
| 46 run = &builder.allocRunPosH(p, glyphCount, 80, NULL); | 46 run = &builder.allocRunPosH(p, glyphCount, 80, nullptr); |
| 47 memcpy(run->glyphs, fGlyphs.begin(), glyphCount * sizeof(uint16_t)); | 47 memcpy(run->glyphs, fGlyphs.begin(), glyphCount * sizeof(uint16_t)); |
| 48 for (int i = 0; i < glyphCount; ++i) { | 48 for (int i = 0; i < glyphCount; ++i) { |
| 49 run->pos[i] = p.getTextSize() * i * .75f; | 49 run->pos[i] = p.getTextSize() * i * .75f; |
| 50 } | 50 } |
| 51 | 51 |
| 52 run = &builder.allocRunPos(p, glyphCount, NULL); | 52 run = &builder.allocRunPos(p, glyphCount, nullptr); |
| 53 memcpy(run->glyphs, fGlyphs.begin(), glyphCount * sizeof(uint16_t)); | 53 memcpy(run->glyphs, fGlyphs.begin(), glyphCount * sizeof(uint16_t)); |
| 54 for (int i = 0; i < glyphCount; ++i) { | 54 for (int i = 0; i < glyphCount; ++i) { |
| 55 run->pos[i * 2] = p.getTextSize() * i * .75f; | 55 run->pos[i * 2] = p.getTextSize() * i * .75f; |
| 56 run->pos[i * 2 + 1] = 150 + 5 * sinf((float)i * 8 / glyphCount); | 56 run->pos[i * 2 + 1] = 150 + 5 * sinf((float)i * 8 / glyphCount); |
| 57 } | 57 } |
| 58 | 58 |
| 59 fBlob.reset(builder.build()); | 59 fBlob.reset(builder.build()); |
| 60 | 60 |
| 61 SkColor colors[2]; | 61 SkColor colors[2]; |
| 62 colors[0] = SK_ColorRED; | 62 colors[0] = SK_ColorRED; |
| (...skipping 40 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 103 | 103 |
| 104 private: | 104 private: |
| 105 SkTDArray<uint16_t> fGlyphs; | 105 SkTDArray<uint16_t> fGlyphs; |
| 106 SkAutoTUnref<const SkTextBlob> fBlob; | 106 SkAutoTUnref<const SkTextBlob> fBlob; |
| 107 SkAutoTUnref<SkShader> fShader; | 107 SkAutoTUnref<SkShader> fShader; |
| 108 | 108 |
| 109 typedef skiagm::GM INHERITED; | 109 typedef skiagm::GM INHERITED; |
| 110 }; | 110 }; |
| 111 | 111 |
| 112 DEF_GM(return new TextBlobShaderGM("Blobber");) | 112 DEF_GM(return new TextBlobShaderGM("Blobber");) |
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