epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 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 | */ |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 7 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 8 | #include "gm.h" |
| 9 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 10 | class SkJSCanvas { |
| 11 | public: |
| 12 | SkJSCanvas(SkCanvas* target); |
| 13 | ~SkJSCanvas(); |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 14 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 15 | void save(); |
| 16 | void restore(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 17 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 18 | double lineWidth; |
| 19 | void setLineWidth(double); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 20 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 21 | void beginPath(); |
| 22 | void moveTo(double x, double y); |
| 23 | void lineTo(double x, double y); |
| 24 | void closePath(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 25 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 26 | void fill(); |
| 27 | void stroke(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 28 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 29 | void fillText(const char text[], double x, double y); |
| 30 | |
| 31 | private: |
| 32 | SkCanvas* fTarget; |
| 33 | SkPaint fFillPaint; |
| 34 | SkPaint fStrokePaint; |
| 35 | SkPath fPath; |
| 36 | }; |
| 37 | |
| 38 | SkJSCanvas::SkJSCanvas(SkCanvas* target) : fTarget(target) { |
| 39 | fFillPaint.setAntiAlias(true); |
Cary Clark | 992c7b0 | 2014-07-31 08:58:44 -0400 | [diff] [blame^] | 40 | sk_tool_utils::set_portable_typeface(&fFillPaint); |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 41 | fStrokePaint.setAntiAlias(true); |
| 42 | fStrokePaint.setStyle(SkPaint::kStroke_Style); |
| 43 | fStrokePaint.setStrokeWidth(SK_Scalar1); |
| 44 | } |
| 45 | |
| 46 | SkJSCanvas::~SkJSCanvas() {} |
| 47 | |
| 48 | void SkJSCanvas::save() { fTarget->save(); } |
| 49 | void SkJSCanvas::restore() { fTarget->restore(); } |
| 50 | |
| 51 | void SkJSCanvas::beginPath() { fPath.reset(); } |
| 52 | void SkJSCanvas::moveTo(double x, double y) { |
| 53 | fPath.moveTo(SkDoubleToScalar(x), SkDoubleToScalar(y)); |
| 54 | } |
| 55 | |
| 56 | void SkJSCanvas::lineTo(double x, double y) { |
| 57 | fPath.lineTo(SkDoubleToScalar(x), SkDoubleToScalar(y)); |
| 58 | } |
| 59 | |
| 60 | void SkJSCanvas::closePath() { fPath.close(); } |
| 61 | |
| 62 | void SkJSCanvas::fill() { |
| 63 | fTarget->drawPath(fPath, fFillPaint); |
| 64 | } |
| 65 | |
| 66 | void SkJSCanvas::stroke() { |
| 67 | fStrokePaint.setStrokeWidth(SkDoubleToScalar(lineWidth)); |
| 68 | fTarget->drawPath(fPath, fStrokePaint); |
| 69 | } |
| 70 | |
| 71 | void SkJSCanvas::fillText(const char text[], double x, double y) { |
| 72 | fTarget->drawText(text, strlen(text), |
| 73 | SkDoubleToScalar(x), SkDoubleToScalar(y), fFillPaint); |
| 74 | } |
| 75 | |
| 76 | /////////////////////////////////////////////////////////////////////////////// |
| 77 | |
| 78 | static void dump(const SkPath& path) { |
| 79 | const SkRect& r = path.getBounds(); |
| 80 | SkDebugf("isEmpty %d, bounds [%g %g %g %g]\n", path.isEmpty(), |
| 81 | r.fLeft, r.fTop, r.fRight, r.fBottom); |
| 82 | } |
| 83 | |
| 84 | static void test_stroke(SkCanvas* canvas) { |
| 85 | if (true) { |
| 86 | SkPath path; |
| 87 | dump(path); |
| 88 | path.reset(); path.moveTo(0, 0); |
| 89 | dump(path); |
| 90 | path.reset(); path.moveTo(100, 100); |
| 91 | dump(path); |
| 92 | path.reset(); path.moveTo(0, 0); path.moveTo(100, 100); |
| 93 | dump(path); |
| 94 | path.reset(); path.moveTo(0, 0); path.lineTo(100, 100); |
| 95 | dump(path); |
| 96 | path.reset(); path.moveTo(0, 0); path.lineTo(100, 100); path.moveTo(200, 200); |
| 97 | dump(path); |
| 98 | } |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 99 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 100 | #if 0 |
| 101 | // TEST 1 - The rectangle as it's expected to look |
| 102 | var canvas = document.createElement('canvas'); |
| 103 | document.body.appendChild(canvas); |
| 104 | var ctx = canvas.getContext("2d"); |
| 105 | #else |
| 106 | SkJSCanvas ctx(canvas); |
| 107 | #endif |
| 108 | |
| 109 | ctx.save(); |
| 110 | ctx.lineWidth = 2; |
| 111 | ctx.beginPath(); |
| 112 | ctx.moveTo(10, 100); |
| 113 | ctx.lineTo(150, 100); |
| 114 | ctx.lineTo(150, 15); |
| 115 | ctx.lineTo(10, 15); |
| 116 | ctx.closePath(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 117 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 118 | // no extra moveTo here |
| 119 | // ctx.moveTo(175, 125); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 120 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 121 | ctx.stroke(); |
| 122 | ctx.restore(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 123 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 124 | ctx.fillText("As Expected", 10, 10); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 125 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 126 | #if 0 |
| 127 | // TEST 2 - Includes an extra moveTo call before stroke; the rectangle appears larger |
| 128 | canvas = document.createElement('canvas'); |
| 129 | document.body.appendChild(canvas); |
| 130 | ctx = canvas.getContext("2d"); |
| 131 | #else |
| 132 | canvas->translate(200, 0); |
| 133 | #endif |
| 134 | |
| 135 | ctx.save(); |
| 136 | ctx.lineWidth = 2; |
| 137 | ctx.beginPath(); |
| 138 | ctx.moveTo(10, 100); |
| 139 | ctx.lineTo(150, 100); |
| 140 | ctx.lineTo(150, 15); |
| 141 | ctx.lineTo(10, 15); |
| 142 | ctx.closePath(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 143 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 144 | ctx.moveTo(175, 125); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 145 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 146 | ctx.stroke(); |
| 147 | ctx.restore(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 148 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 149 | ctx.fillText("Larger Rectangle", 10, 10); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 150 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 151 | #if 0 |
| 152 | // TEST 3 - Identical to test 2 except the line width is 1 |
| 153 | canvas = document.createElement('canvas'); |
| 154 | document.body.appendChild(canvas); |
| 155 | ctx = canvas.getContext("2d"); |
| 156 | #else |
| 157 | canvas->translate(200, 0); |
| 158 | #endif |
| 159 | |
| 160 | ctx.save(); |
| 161 | ctx.lineWidth = 1; |
| 162 | ctx.beginPath(); |
| 163 | ctx.moveTo(10, 100); |
| 164 | ctx.lineTo(150, 100); |
| 165 | ctx.lineTo(150, 15); |
| 166 | ctx.lineTo(10, 15); |
| 167 | ctx.closePath(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 168 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 169 | ctx.moveTo(175, 125); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 170 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 171 | ctx.stroke(); |
| 172 | ctx.restore(); |
skia.committer@gmail.com | 020b25b | 2013-06-22 07:00:58 +0000 | [diff] [blame] | 173 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 174 | ctx.fillText("As Expected - line width 1", 10, 10); |
| 175 | } |
| 176 | |
| 177 | class Poly2PolyGM : public skiagm::GM { |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 178 | public: |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 179 | Poly2PolyGM() {} |
| 180 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 181 | protected: |
commit-bot@chromium.org | a90c680 | 2014-04-30 13:20:45 +0000 | [diff] [blame] | 182 | virtual uint32_t onGetFlags() const SK_OVERRIDE { |
| 183 | return kSkipTiled_Flag; |
| 184 | } |
| 185 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 186 | virtual SkString onShortName() SK_OVERRIDE { |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 187 | return SkString("poly2poly"); |
| 188 | } |
| 189 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 190 | virtual SkISize onISize() SK_OVERRIDE { |
| 191 | return SkISize::Make(835, 840); |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 192 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 193 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 194 | static void doDraw(SkCanvas* canvas, SkPaint* paint, const int isrc[], |
| 195 | const int idst[], int count) { |
| 196 | SkMatrix matrix; |
| 197 | SkPoint src[4], dst[4]; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 198 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 199 | for (int i = 0; i < count; i++) { |
| 200 | src[i].set(SkIntToScalar(isrc[2*i+0]), SkIntToScalar(isrc[2*i+1])); |
| 201 | dst[i].set(SkIntToScalar(idst[2*i+0]), SkIntToScalar(idst[2*i+1])); |
| 202 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 203 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 204 | canvas->save(); |
| 205 | matrix.setPolyToPoly(src, dst, count); |
| 206 | canvas->concat(matrix); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 207 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 208 | paint->setColor(SK_ColorGRAY); |
| 209 | paint->setStyle(SkPaint::kStroke_Style); |
| 210 | const SkScalar D = SkIntToScalar(64); |
| 211 | canvas->drawRectCoords(0, 0, D, D, *paint); |
| 212 | canvas->drawLine(0, 0, D, D, *paint); |
| 213 | canvas->drawLine(0, D, D, 0, *paint); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 214 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 215 | SkPaint::FontMetrics fm; |
| 216 | paint->getFontMetrics(&fm); |
| 217 | paint->setColor(SK_ColorRED); |
| 218 | paint->setStyle(SkPaint::kFill_Style); |
| 219 | SkScalar x = D/2; |
bsalomon@google.com | 72e49b8 | 2011-10-27 21:47:03 +0000 | [diff] [blame] | 220 | SkScalar y = D/2 - (fm.fAscent + fm.fDescent)/2; |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 221 | SkString str; |
| 222 | str.appendS32(count); |
| 223 | canvas->drawText(str.c_str(), str.size(), x, y, *paint); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 224 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 225 | canvas->restore(); |
| 226 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 227 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 228 | virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 229 | if (false) { test_stroke(canvas); return; } |
| 230 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 231 | SkPaint paint; |
| 232 | paint.setAntiAlias(true); |
Cary Clark | 992c7b0 | 2014-07-31 08:58:44 -0400 | [diff] [blame^] | 233 | sk_tool_utils::set_portable_typeface(&paint); |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 234 | paint.setStrokeWidth(SkIntToScalar(4)); |
| 235 | paint.setTextSize(SkIntToScalar(40)); |
| 236 | paint.setTextAlign(SkPaint::kCenter_Align); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 237 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 238 | canvas->save(); |
| 239 | canvas->translate(SkIntToScalar(10), SkIntToScalar(10)); |
| 240 | // translate (1 point) |
| 241 | const int src1[] = { 0, 0 }; |
| 242 | const int dst1[] = { 5, 5 }; |
| 243 | doDraw(canvas, &paint, src1, dst1, 1); |
| 244 | canvas->restore(); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 245 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 246 | canvas->save(); |
| 247 | canvas->translate(SkIntToScalar(160), SkIntToScalar(10)); |
| 248 | // rotate/uniform-scale (2 points) |
| 249 | const int src2[] = { 32, 32, 64, 32 }; |
| 250 | const int dst2[] = { 32, 32, 64, 48 }; |
| 251 | doDraw(canvas, &paint, src2, dst2, 2); |
| 252 | canvas->restore(); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 253 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 254 | canvas->save(); |
| 255 | canvas->translate(SkIntToScalar(10), SkIntToScalar(110)); |
| 256 | // rotate/skew (3 points) |
| 257 | const int src3[] = { 0, 0, 64, 0, 0, 64 }; |
| 258 | const int dst3[] = { 0, 0, 96, 0, 24, 64 }; |
| 259 | doDraw(canvas, &paint, src3, dst3, 3); |
| 260 | canvas->restore(); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 261 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 262 | canvas->save(); |
| 263 | canvas->translate(SkIntToScalar(160), SkIntToScalar(110)); |
| 264 | // perspective (4 points) |
| 265 | const int src4[] = { 0, 0, 64, 0, 64, 64, 0, 64 }; |
| 266 | const int dst4[] = { 0, 0, 96, 0, 64, 96, 0, 64 }; |
| 267 | doDraw(canvas, &paint, src4, dst4, 4); |
| 268 | canvas->restore(); |
| 269 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 270 | |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 271 | private: |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 272 | typedef skiagm::GM INHERITED; |
reed@google.com | 67981c5 | 2011-02-17 14:21:01 +0000 | [diff] [blame] | 273 | }; |
| 274 | |
| 275 | ////////////////////////////////////////////////////////////////////////////// |
| 276 | |
reed@google.com | 8ea6983 | 2013-06-21 15:11:40 +0000 | [diff] [blame] | 277 | DEF_GM( return new Poly2PolyGM; ) |