bsalomon | 7c5c9da | 2014-06-09 15:11:30 -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 | #include "SkCanvas.h" |
| 10 | #include "SkPath.h" |
| 11 | #include "SkTypeface.h" |
| 12 | #include "SkRandom.h" |
| 13 | |
| 14 | /** |
| 15 | * Draws text with random parameters. The text draws each get their own clip rect. It is also |
| 16 | * used as a bench to measure how well the GPU backend batches text draws. |
| 17 | */ |
| 18 | |
| 19 | class VariedTextGM : public skiagm::GM { |
| 20 | public: |
| 21 | VariedTextGM(bool effectiveClip, bool lcd) |
| 22 | : fEffectiveClip(effectiveClip) |
| 23 | , fLCD(lcd) { |
| 24 | memset(fTypefacesToUnref, 0, sizeof(fTypefacesToUnref)); |
| 25 | } |
| 26 | |
| 27 | ~VariedTextGM() { |
| 28 | for (size_t i = 0; i < SK_ARRAY_COUNT(fTypefacesToUnref); ++i) { |
| 29 | SkSafeUnref(fTypefacesToUnref[i]); |
| 30 | } |
| 31 | } |
| 32 | |
| 33 | protected: |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 34 | SkString onShortName() SK_OVERRIDE { |
bsalomon | 7c5c9da | 2014-06-09 15:11:30 -0700 | [diff] [blame] | 35 | SkString name("varied_text"); |
| 36 | if (fEffectiveClip) { |
| 37 | name.append("_clipped"); |
| 38 | } else { |
| 39 | name.append("_ignorable_clip"); |
| 40 | } |
| 41 | if (fLCD) { |
| 42 | name.append("_lcd"); |
| 43 | } else { |
| 44 | name.append("_no_lcd"); |
| 45 | } |
| 46 | return name; |
| 47 | } |
| 48 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 49 | SkISize onISize() SK_OVERRIDE { |
bsalomon | 7c5c9da | 2014-06-09 15:11:30 -0700 | [diff] [blame] | 50 | return SkISize::Make(640, 480); |
| 51 | } |
| 52 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 53 | void onOnceBeforeDraw() SK_OVERRIDE { |
bsalomon | 7c5c9da | 2014-06-09 15:11:30 -0700 | [diff] [blame] | 54 | fPaint.setAntiAlias(true); |
| 55 | fPaint.setLCDRenderText(fLCD); |
| 56 | |
| 57 | SkISize size = this->getISize(); |
| 58 | SkScalar w = SkIntToScalar(size.fWidth); |
| 59 | SkScalar h = SkIntToScalar(size.fHeight); |
| 60 | |
| 61 | SK_COMPILE_ASSERT(4 == SK_ARRAY_COUNT(fTypefacesToUnref), typeface_cnt); |
Cary Clark | 992c7b0 | 2014-07-31 08:58:44 -0400 | [diff] [blame] | 62 | fTypefacesToUnref[0] = sk_tool_utils::create_portable_typeface("sans-serif", SkTypeface::kNormal); |
| 63 | fTypefacesToUnref[1] = sk_tool_utils::create_portable_typeface("sans-serif", SkTypeface::kBold); |
| 64 | fTypefacesToUnref[2] = sk_tool_utils::create_portable_typeface("serif", SkTypeface::kNormal); |
| 65 | fTypefacesToUnref[3] = sk_tool_utils::create_portable_typeface("serif", SkTypeface::kBold); |
bsalomon | 7c5c9da | 2014-06-09 15:11:30 -0700 | [diff] [blame] | 66 | |
| 67 | SkRandom random; |
| 68 | for (int i = 0; i < kCnt; ++i) { |
| 69 | int length = random.nextRangeU(kMinLength, kMaxLength); |
| 70 | char text[kMaxLength]; |
| 71 | for (int j = 0; j < length; ++j) { |
| 72 | text[j] = (char)random.nextRangeU('!', 'z'); |
| 73 | } |
| 74 | fStrings[i].set(text, length); |
| 75 | |
| 76 | fColors[i] = random.nextU(); |
| 77 | fColors[i] |= 0xFF000000; |
| 78 | |
| 79 | static const SkScalar kMinPtSize = 8.f; |
| 80 | static const SkScalar kMaxPtSize = 32.f; |
| 81 | |
| 82 | fPtSizes[i] = random.nextRangeScalar(kMinPtSize, kMaxPtSize); |
| 83 | |
| 84 | fTypefaces[i] = fTypefacesToUnref[ |
| 85 | random.nextULessThan(SK_ARRAY_COUNT(fTypefacesToUnref))]; |
| 86 | |
| 87 | SkRect r; |
| 88 | fPaint.setColor(fColors[i]); |
| 89 | fPaint.setTypeface(fTypefaces[i]); |
| 90 | fPaint.setTextSize(fPtSizes[i]); |
| 91 | |
| 92 | fPaint.measureText(fStrings[i].c_str(), fStrings[i].size(), &r); |
| 93 | // safeRect is set of x,y positions where we can draw the string without hitting |
| 94 | // the GM's border. |
| 95 | SkRect safeRect = SkRect::MakeLTRB(-r.fLeft, -r.fTop, w - r.fRight, h - r.fBottom); |
| 96 | if (safeRect.isEmpty()) { |
| 97 | // If we don't fit then just don't worry about how we get cliped to the device |
| 98 | // border. |
| 99 | safeRect = SkRect::MakeWH(w, h); |
| 100 | } |
| 101 | fPositions[i].fX = random.nextRangeScalar(safeRect.fLeft, safeRect.fRight); |
| 102 | fPositions[i].fY = random.nextRangeScalar(safeRect.fTop, safeRect.fBottom); |
| 103 | |
| 104 | fClipRects[i] = r; |
| 105 | fClipRects[i].offset(fPositions[i].fX, fPositions[i].fY); |
| 106 | fClipRects[i].outset(2.f, 2.f); |
| 107 | |
| 108 | if (fEffectiveClip) { |
| 109 | fClipRects[i].fRight -= 0.25f * fClipRects[i].width(); |
| 110 | } |
| 111 | } |
| 112 | } |
| 113 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 114 | void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
bsalomon | 7c5c9da | 2014-06-09 15:11:30 -0700 | [diff] [blame] | 115 | for (int i = 0; i < kCnt; ++i) { |
| 116 | fPaint.setColor(fColors[i]); |
| 117 | fPaint.setTextSize(fPtSizes[i]); |
| 118 | fPaint.setTypeface(fTypefaces[i]); |
| 119 | |
| 120 | canvas->save(); |
| 121 | canvas->clipRect(fClipRects[i]); |
| 122 | canvas->translate(fPositions[i].fX, fPositions[i].fY); |
| 123 | canvas->drawText(fStrings[i].c_str(), fStrings[i].size(), 0, 0, fPaint); |
| 124 | canvas->restore(); |
| 125 | } |
| 126 | |
| 127 | // Visualize the clips, but not in bench mode. |
| 128 | if (kBench_Mode != this->getMode()) { |
| 129 | SkPaint wirePaint; |
| 130 | wirePaint.setAntiAlias(true); |
| 131 | wirePaint.setStrokeWidth(0); |
| 132 | wirePaint.setStyle(SkPaint::kStroke_Style); |
| 133 | for (int i = 0; i < kCnt; ++i) { |
| 134 | canvas->drawRect(fClipRects[i], wirePaint); |
| 135 | } |
| 136 | } |
| 137 | } |
| 138 | |
mtklein | cf5d9c9 | 2015-01-23 10:31:45 -0800 | [diff] [blame] | 139 | bool runAsBench() const SK_OVERRIDE { return true; } |
bsalomon | 7c5c9da | 2014-06-09 15:11:30 -0700 | [diff] [blame] | 140 | |
| 141 | private: |
| 142 | static const int kCnt = 30; |
| 143 | static const int kMinLength = 15; |
| 144 | static const int kMaxLength = 40; |
| 145 | |
| 146 | bool fEffectiveClip; |
| 147 | bool fLCD; |
| 148 | SkTypeface* fTypefacesToUnref[4]; |
| 149 | SkPaint fPaint; |
| 150 | |
| 151 | // precomputed for each text draw |
| 152 | SkString fStrings[kCnt]; |
| 153 | SkColor fColors[kCnt]; |
| 154 | SkScalar fPtSizes[kCnt]; |
| 155 | SkTypeface* fTypefaces[kCnt]; |
| 156 | SkPoint fPositions[kCnt]; |
| 157 | SkRect fClipRects[kCnt]; |
| 158 | |
| 159 | typedef skiagm::GM INHERITED; |
| 160 | }; |
| 161 | |
| 162 | DEF_GM( return SkNEW(VariedTextGM(false, false)); ) |
| 163 | DEF_GM( return SkNEW(VariedTextGM(true, false)); ) |
| 164 | DEF_GM( return SkNEW(VariedTextGM(false, true)); ) |
| 165 | DEF_GM( return SkNEW(VariedTextGM(true, true)); ) |