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 | |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 8 | #include "SkCanvas.h" |
| 9 | #include "SkColor.h" |
| 10 | #include "SkFontStyle.h" |
| 11 | #include "SkPaint.h" |
| 12 | #include "SkPoint.h" |
| 13 | #include "SkRect.h" |
| 14 | #include "SkRefCnt.h" |
| 15 | #include "SkScalar.h" |
| 16 | #include "SkSize.h" |
| 17 | #include "SkString.h" |
| 18 | #include "SkTDArray.h" |
| 19 | #include "SkTextBlob.h" |
| 20 | #include "SkTypeface.h" |
| 21 | #include "SkTypes.h" |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 22 | #include "gm.h" |
Mike Klein | 33d2055 | 2017-03-22 13:47:51 -0400 | [diff] [blame] | 23 | #include "sk_tool_utils.h" |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 24 | |
Ben Wagner | cb3d49c | 2018-03-14 15:07:43 -0400 | [diff] [blame] | 25 | #include <cstring> |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 26 | |
| 27 | namespace { |
| 28 | |
| 29 | enum Pos { |
| 30 | kDefault_Pos = 0, |
| 31 | kScalar_Pos = 1, |
| 32 | kPoint_Pos = 2, |
| 33 | }; |
| 34 | |
| 35 | const struct BlobCfg { |
| 36 | unsigned count; |
| 37 | Pos pos; |
| 38 | SkScalar scale; |
| 39 | } blobConfigs[][3][3] = { |
| 40 | { |
| 41 | { { 1024, kDefault_Pos, 1 }, { 0, kDefault_Pos, 0 }, { 0, kDefault_Pos, 0 } }, |
| 42 | { { 1024, kScalar_Pos, 1 }, { 0, kScalar_Pos, 0 }, { 0, kScalar_Pos, 0 } }, |
| 43 | { { 1024, kPoint_Pos, 1 }, { 0, kPoint_Pos, 0 }, { 0, kPoint_Pos, 0 } }, |
| 44 | }, |
| 45 | { |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 46 | { { 4, kDefault_Pos, 1 }, { 4, kDefault_Pos, 1 }, { 4, kDefault_Pos, 1 } }, |
| 47 | { { 4, kScalar_Pos, 1 }, { 4, kScalar_Pos, 1 }, { 4, kScalar_Pos, 1 } }, |
| 48 | { { 4, kPoint_Pos, 1 }, { 4, kPoint_Pos, 1 }, { 4, kPoint_Pos, 1 } }, |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 49 | }, |
| 50 | |
| 51 | { |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 52 | { { 4, kDefault_Pos, 1 }, { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1 } }, |
| 53 | { { 4, kScalar_Pos, 1 }, { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1 } }, |
| 54 | { { 4, kPoint_Pos, 1 }, { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1 } }, |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 55 | }, |
| 56 | |
| 57 | { |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 58 | { { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1 } }, |
| 59 | { { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1 } }, |
| 60 | { { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1 } }, |
| 61 | }, |
| 62 | |
| 63 | { |
| 64 | { { 4, kDefault_Pos, .75f }, { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, 1.25f } }, |
| 65 | { { 4, kScalar_Pos, .75f }, { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, 1.25f } }, |
| 66 | { { 4, kPoint_Pos, .75f }, { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, 1.25f } }, |
| 67 | }, |
| 68 | |
| 69 | { |
| 70 | { { 4, kDefault_Pos, 1 }, { 4, kScalar_Pos, .75f }, { 4, kPoint_Pos, 1.25f } }, |
| 71 | { { 4, kScalar_Pos, 1 }, { 4, kPoint_Pos, .75f }, { 4, kDefault_Pos, 1.25f } }, |
| 72 | { { 4, kPoint_Pos, 1 }, { 4, kDefault_Pos, .75f }, { 4, kScalar_Pos, 1.25f } }, |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 73 | }, |
| 74 | }; |
| 75 | |
| 76 | const SkScalar kFontSize = 16; |
| 77 | } |
| 78 | |
| 79 | class TextBlobGM : public skiagm::GM { |
| 80 | public: |
fmalita | acb882c | 2014-09-16 17:58:34 -0700 | [diff] [blame] | 81 | TextBlobGM(const char* txt) |
kkinnunen | b4a797f | 2015-05-21 06:15:28 -0700 | [diff] [blame] | 82 | : fText(txt) { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | protected: |
kkinnunen | b4a797f | 2015-05-21 06:15:28 -0700 | [diff] [blame] | 86 | void onOnceBeforeDraw() override { |
mboc | ee6a991 | 2016-05-31 11:42:36 -0700 | [diff] [blame] | 87 | fTypeface = sk_tool_utils::create_portable_typeface("serif", SkFontStyle()); |
kkinnunen | b4a797f | 2015-05-21 06:15:28 -0700 | [diff] [blame] | 88 | SkPaint p; |
| 89 | p.setTypeface(fTypeface); |
| 90 | size_t txtLen = strlen(fText); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 91 | int glyphCount = p.textToGlyphs(fText, txtLen, nullptr); |
kkinnunen | b4a797f | 2015-05-21 06:15:28 -0700 | [diff] [blame] | 92 | |
| 93 | fGlyphs.append(glyphCount); |
| 94 | p.textToGlyphs(fText, txtLen, fGlyphs.begin()); |
| 95 | } |
| 96 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 97 | SkString onShortName() override { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 98 | return SkString("textblob"); |
| 99 | } |
| 100 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 101 | SkISize onISize() override { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 102 | return SkISize::Make(640, 480); |
| 103 | } |
| 104 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 105 | void onDraw(SkCanvas* canvas) override { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 106 | for (unsigned b = 0; b < SK_ARRAY_COUNT(blobConfigs); ++b) { |
fmalita | 37283c2 | 2016-09-13 10:00:23 -0700 | [diff] [blame] | 107 | sk_sp<SkTextBlob> blob(this->makeBlob(b)); |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 108 | |
| 109 | SkPaint p; |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 110 | SkPoint offset = SkPoint::Make(SkIntToScalar(10 + 300 * (b % 2)), |
| 111 | SkIntToScalar(20 + 150 * (b / 2))); |
| 112 | |
| 113 | canvas->drawTextBlob(blob, offset.x(), offset.y(), p); |
| 114 | |
| 115 | p.setColor(SK_ColorBLUE); |
| 116 | p.setStyle(SkPaint::kStroke_Style); |
| 117 | SkRect box = blob->bounds(); |
| 118 | box.offset(offset); |
| 119 | canvas->drawRect(box, p); |
| 120 | |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | private: |
fmalita | 37283c2 | 2016-09-13 10:00:23 -0700 | [diff] [blame] | 125 | sk_sp<SkTextBlob> makeBlob(unsigned blobIndex) { |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 126 | SkTextBlobBuilder builder; |
| 127 | |
| 128 | SkPaint font; |
| 129 | font.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
fmalita | 37ecbaf | 2014-08-22 09:01:19 -0700 | [diff] [blame] | 130 | font.setAntiAlias(true); |
| 131 | font.setSubpixelText(true); |
fmalita | acb882c | 2014-09-16 17:58:34 -0700 | [diff] [blame] | 132 | font.setTypeface(fTypeface); |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 133 | |
| 134 | for (unsigned l = 0; l < SK_ARRAY_COUNT(blobConfigs[blobIndex]); ++l) { |
| 135 | unsigned currentGlyph = 0; |
| 136 | |
| 137 | for (unsigned c = 0; c < SK_ARRAY_COUNT(blobConfigs[blobIndex][l]); ++c) { |
| 138 | const BlobCfg* cfg = &blobConfigs[blobIndex][l][c]; |
| 139 | unsigned count = cfg->count; |
| 140 | |
| 141 | if (count > fGlyphs.count() - currentGlyph) { |
| 142 | count = fGlyphs.count() - currentGlyph; |
| 143 | } |
| 144 | if (0 == count) { |
| 145 | break; |
| 146 | } |
| 147 | |
| 148 | font.setTextSize(kFontSize * cfg->scale); |
| 149 | const SkScalar advanceX = font.getTextSize() * 0.85f; |
| 150 | const SkScalar advanceY = font.getTextSize() * 1.5f; |
| 151 | |
| 152 | SkPoint offset = SkPoint::Make(currentGlyph * advanceX + c * advanceX, |
| 153 | advanceY * l); |
| 154 | switch (cfg->pos) { |
| 155 | case kDefault_Pos: { |
| 156 | const SkTextBlobBuilder::RunBuffer& buf = builder.allocRun(font, count, |
| 157 | offset.x(), |
| 158 | offset.y()); |
| 159 | memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t)); |
| 160 | } break; |
| 161 | case kScalar_Pos: { |
| 162 | const SkTextBlobBuilder::RunBuffer& buf = builder.allocRunPosH(font, count, |
| 163 | offset.y()); |
| 164 | SkTDArray<SkScalar> pos; |
| 165 | for (unsigned i = 0; i < count; ++i) { |
| 166 | *pos.append() = offset.x() + i * advanceX; |
| 167 | } |
| 168 | |
| 169 | memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t)); |
| 170 | memcpy(buf.pos, pos.begin(), count * sizeof(SkScalar)); |
| 171 | } break; |
| 172 | case kPoint_Pos: { |
| 173 | const SkTextBlobBuilder::RunBuffer& buf = builder.allocRunPos(font, count); |
| 174 | |
| 175 | SkTDArray<SkScalar> pos; |
| 176 | for (unsigned i = 0; i < count; ++i) { |
| 177 | *pos.append() = offset.x() + i * advanceX; |
| 178 | *pos.append() = offset.y() + i * (advanceY / count); |
| 179 | } |
| 180 | |
| 181 | memcpy(buf.glyphs, fGlyphs.begin() + currentGlyph, count * sizeof(uint16_t)); |
| 182 | memcpy(buf.pos, pos.begin(), count * sizeof(SkScalar) * 2); |
| 183 | } break; |
| 184 | default: |
djsollen | f2b340f | 2016-01-29 08:51:04 -0800 | [diff] [blame] | 185 | SK_ABORT("unhandled pos value"); |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | currentGlyph += count; |
| 189 | } |
| 190 | } |
| 191 | |
fmalita | 37283c2 | 2016-09-13 10:00:23 -0700 | [diff] [blame] | 192 | return builder.make(); |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 193 | } |
| 194 | |
bungeman | 13b9c95 | 2016-05-12 10:09:30 -0700 | [diff] [blame] | 195 | SkTDArray<uint16_t> fGlyphs; |
| 196 | sk_sp<SkTypeface> fTypeface; |
| 197 | const char* fText; |
fmalita | 00d5c2c | 2014-08-21 08:53:26 -0700 | [diff] [blame] | 198 | typedef skiagm::GM INHERITED; |
| 199 | }; |
| 200 | |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 201 | DEF_GM(return new TextBlobGM("hamburgefons");) |