fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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.h" |
| 9 | |
| 10 | #include "SkCanvas.h" |
| 11 | #include "SkPoint.h" |
| 12 | #include "SkTextBlob.h" |
| 13 | #include "SkTDArray.h" |
| 14 | |
| 15 | namespace { |
| 16 | |
| 17 | enum Pos { |
| 18 | kDefault_Pos = 0, |
| 19 | kScalar_Pos = 1, |
| 20 | kPoint_Pos = 2, |
| 21 | }; |
| 22 | |
| 23 | const struct BlobCfg { |
| 24 | unsigned count; |
| 25 | Pos pos; |
| 26 | SkScalar scale; |
| 27 | } blobConfigs[][3][3] = { |
| 28 | { |
| 29 | { { 1024, kDefault_Pos, 1 }, { 0, kDefault_Pos, 0 }, { 0, kDefault_Pos, 0 } }, |
| 30 | { { 1024, kScalar_Pos, 1 }, { 0, kScalar_Pos, 0 }, { 0, kScalar_Pos, 0 } }, |
| 31 | { { 1024, kPoint_Pos, 1 }, { 0, kPoint_Pos, 0 }, { 0, kPoint_Pos, 0 } }, |
| 32 | }, |
| 33 | { |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 34 | { { 4, kDefault_Pos, 1 }, { 4, kDefault_Pos, 1 }, { 4, kDefault_Pos, 1 } }, |
| 35 | { { 4, kScalar_Pos, 1 }, { 4, kScalar_Pos, 1 }, { 4, kScalar_Pos, 1 } }, |
| 36 | { { 4, kPoint_Pos, 1 }, { 4, kPoint_Pos, 1 }, { 4, kPoint_Pos, 1 } }, |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 37 | }, |
| 38 | |
| 39 | { |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 40 | { { 4, kDefault_Pos, 1 }, { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1 } }, |
| 41 | { { 4, kScalar_Pos, 1 }, { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1 } }, |
| 42 | { { 4, kPoint_Pos, 1 }, { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1 } }, |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 43 | }, |
| 44 | |
| 45 | { |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 46 | { { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1 } }, |
| 47 | { { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1 } }, |
| 48 | { { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1 } }, |
| 49 | }, |
| 50 | |
| 51 | { |
| 52 | { { 4, kDefault_Pos, .75f }, { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1.25f } }, |
| 53 | { { 4, kScalar_Pos, .75f }, { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1.25f } }, |
| 54 | { { 4, kPoint_Pos, .75f }, { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1.25f } }, |
| 55 | }, |
| 56 | |
| 57 | { |
| 58 | { { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, .75f }, { 4, kPoint_Pos, 1.25f } }, |
| 59 | { { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, .75f }, { 4, kDefault_Pos, 1.25f } }, |
| 60 | { { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, .75f }, { 4, kScalar_Pos, 1.25f } }, |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 61 | }, |
| 62 | }; |
| 63 | |
| 64 | const SkScalar kFontSize = 16; |
| 65 | } |
| 66 | |
| 67 | class TextBlobGM : public skiagm::GM { |
| 68 | public: |
fmalita | acb882c | 2014-09-16 17:58:34 -0700 | [diff] [blame] | 69 | TextBlobGM(const char* txt) |
kkinnunen | b4a797f | 2015-05-21 06:15:28 -0700 | [diff] [blame] | 70 | : fText(txt) { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | protected: |
kkinnunen | b4a797f | 2015-05-21 06:15:28 -0700 | [diff] [blame] | 74 | void onOnceBeforeDraw() override { |
| 75 | fTypeface.reset(sk_tool_utils::create_portable_typeface("Times", SkTypeface::kNormal)); |
| 76 | SkPaint p; |
| 77 | p.setTypeface(fTypeface); |
| 78 | size_t txtLen = strlen(fText); |
| 79 | int glyphCount = p.textToGlyphs(fText, txtLen, NULL); |
| 80 | |
| 81 | fGlyphs.append(glyphCount); |
| 82 | p.textToGlyphs(fText, txtLen, fGlyphs.begin()); |
| 83 | } |
| 84 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 85 | SkString onShortName() override { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 86 | return SkString("textblob"); |
| 87 | } |
| 88 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 89 | SkISize onISize() override { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 90 | return SkISize::Make(640, 480); |
| 91 | } |
| 92 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 93 | void onDraw(SkCanvas* canvas) override { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 94 | for (unsigned b = 0; b < SK_ARRAY_COUNT(blobConfigs); ++b) { |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 95 | SkAutoTUnref<const SkTextBlob> blob(this->makeBlob(b)); |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 96 | |
| 97 | SkPaint p; |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 98 | SkPoint offset = SkPoint::Make(SkIntToScalar(10 + 300 * (b % 2)), |
| 99 | SkIntToScalar(20 + 150 * (b / 2))); |
| 100 | |
| 101 | canvas->drawTextBlob(blob, offset.x(), offset.y(), p); |
| 102 | |
| 103 | p.setColor(SK_ColorBLUE); |
| 104 | p.setStyle(SkPaint::kStroke_Style); |
| 105 | SkRect box = blob->bounds(); |
| 106 | box.offset(offset); |
| 107 | canvas->drawRect(box, p); |
| 108 | |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | private: |
| 113 | const SkTextBlob* makeBlob(unsigned blobIndex) { |
| 114 | SkTextBlobBuilder builder; |
| 115 | |
| 116 | SkPaint font; |
| 117 | font.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 118 | font.setAntiAlias(true); |
| 119 | font.setSubpixelText(true); |
fmalita | acb882c | 2014-09-16 17:58:34 -0700 | [diff] [blame] | 120 | font.setTypeface(fTypeface); |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 121 | |
| 122 | for (unsigned l = 0; l < SK_ARRAY_COUNT(blobConfigs[blobIndex]); ++l) { |
| 123 | unsigned currentGlyph = 0; |
| 124 | |
| 125 | for (unsigned c = 0; c < SK_ARRAY_COUNT(blobConfigs[blobIndex][l]); ++c) { |
| 126 | const BlobCfg* cfg = &blobConfigs[blobIndex][l][c]; |
| 127 | unsigned count = cfg->count; |
| 128 | |
| 129 | if (count > fGlyphs.count() - currentGlyph) { |
| 130 | count = fGlyphs.count() - currentGlyph; |
| 131 | } |
| 132 | if (0 == count) { |
| 133 | break; |
| 134 | } |
| 135 | |
| 136 | font.setTextSize(kFontSize * cfg->scale); |
| 137 | const SkScalar advanceX = font.getTextSize() * 0.85f; |
| 138 | const SkScalar advanceY = font.getTextSize() * 1.5f; |
| 139 | |
| 140 | SkPoint offset = SkPoint::Make(currentGlyph * advanceX + c * advanceX, |
| 141 | advanceY * l); |
| 142 | switch (cfg->pos) { |
| 143 | case kDefault_Pos: { |
| 144 | const SkTextBlobBuilder::RunBuffer& buf = builder.allocRun(font, count, |
| 145 | offset.x(), |
| 146 | offset.y()); |
| 147 | memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t)); |
| 148 | } break; |
| 149 | case kScalar_Pos: { |
| 150 | const SkTextBlobBuilder::RunBuffer& buf = builder.allocRunPosH(font, count, |
| 151 | offset.y()); |
| 152 | SkTDArray<SkScalar> pos; |
| 153 | for (unsigned i = 0; i < count; ++i) { |
| 154 | *pos.append() = offset.x() + i * advanceX; |
| 155 | } |
| 156 | |
| 157 | memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t)); |
| 158 | memcpy(buf.pos, pos.begin(), count * sizeof(SkScalar)); |
| 159 | } break; |
| 160 | case kPoint_Pos: { |
| 161 | const SkTextBlobBuilder::RunBuffer& buf = builder.allocRunPos(font, count); |
| 162 | |
| 163 | SkTDArray<SkScalar> pos; |
| 164 | for (unsigned i = 0; i < count; ++i) { |
| 165 | *pos.append() = offset.x() + i * advanceX; |
| 166 | *pos.append() = offset.y() + i * (advanceY / count); |
| 167 | } |
| 168 | |
| 169 | memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t)); |
| 170 | memcpy(buf.pos, pos.begin(), count * sizeof(SkScalar) * 2); |
| 171 | } break; |
| 172 | default: |
| 173 | SkFAIL("unhandled pos value"); |
| 174 | } |
| 175 | |
| 176 | currentGlyph += count; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | return builder.build(); |
| 181 | } |
| 182 | |
fmalita | acb882c | 2014-09-16 17:58:34 -0700 | [diff] [blame] | 183 | SkTDArray<uint16_t> fGlyphs; |
| 184 | SkAutoTUnref<SkTypeface> fTypeface; |
kkinnunen | b4a797f | 2015-05-21 06:15:28 -0700 | [diff] [blame] | 185 | const char* fText; |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 186 | typedef skiagm::GM INHERITED; |
| 187 | }; |
| 188 | |
| 189 | DEF_GM( return SkNEW_ARGS(TextBlobGM, ("hamburgefons")); ) |