reed@android.com | 63e34c6 | 2009-10-06 21:19:18 +0000 | [diff] [blame^] | 1 | #include "SampleCode.h" |
| 2 | #include "SkView.h" |
| 3 | #include "SkCanvas.h" |
| 4 | #include "SkDevice.h" |
| 5 | #include "SkPaint.h" |
| 6 | |
| 7 | typedef void (*SlideProc)(SkCanvas*); |
| 8 | |
| 9 | /////////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | #include "Sk1DPathEffect.h" |
| 12 | #include "Sk2DPathEffect.h" |
| 13 | #include "SkCornerPathEffect.h" |
| 14 | #include "SkDashPathEffect.h" |
| 15 | #include "SkDiscretePathEffect.h" |
| 16 | |
| 17 | static void compose_pe(SkPaint* paint) { |
| 18 | SkPathEffect* pe = paint->getPathEffect(); |
| 19 | SkPathEffect* corner = new SkCornerPathEffect(25); |
| 20 | SkPathEffect* compose; |
| 21 | if (pe) { |
| 22 | compose = new SkComposePathEffect(pe, corner); |
| 23 | corner->unref(); |
| 24 | } else { |
| 25 | compose = corner; |
| 26 | } |
| 27 | paint->setPathEffect(compose)->unref(); |
| 28 | } |
| 29 | |
| 30 | static void hair_pe(SkPaint* paint) { |
| 31 | paint->setStrokeWidth(0); |
| 32 | } |
| 33 | |
| 34 | static void hair2_pe(SkPaint* paint) { |
| 35 | paint->setStrokeWidth(0); |
| 36 | compose_pe(paint); |
| 37 | } |
| 38 | |
| 39 | static void stroke_pe(SkPaint* paint) { |
| 40 | paint->setStrokeWidth(12); |
| 41 | compose_pe(paint); |
| 42 | } |
| 43 | |
| 44 | static void dash_pe(SkPaint* paint) { |
| 45 | SkScalar inter[] = { 20, 10, 10, 10 }; |
| 46 | paint->setStrokeWidth(12); |
| 47 | paint->setPathEffect(new SkDashPathEffect(inter, SK_ARRAY_COUNT(inter), |
| 48 | 0))->unref(); |
| 49 | compose_pe(paint); |
| 50 | } |
| 51 | |
| 52 | static const int gXY[] = { |
| 53 | 4, 0, 0, -4, 8, -4, 12, 0, 8, 4, 0, 4 |
| 54 | }; |
| 55 | |
| 56 | static void scale(SkPath* path, SkScalar scale) { |
| 57 | SkMatrix m; |
| 58 | m.setScale(scale, scale); |
| 59 | path->transform(m); |
| 60 | } |
| 61 | |
| 62 | static void one_d_pe(SkPaint* paint) { |
| 63 | SkPath path; |
| 64 | path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1])); |
| 65 | for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2) |
| 66 | path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1])); |
| 67 | path.close(); |
| 68 | path.offset(SkIntToScalar(-6), 0); |
| 69 | scale(&path, 1.5); |
| 70 | |
| 71 | paint->setPathEffect(new SkPath1DPathEffect(path, SkIntToScalar(21), 0, |
| 72 | SkPath1DPathEffect::kRotate_Style))->unref(); |
| 73 | compose_pe(paint); |
| 74 | } |
| 75 | |
| 76 | typedef void (*PE_Proc)(SkPaint*); |
| 77 | static const PE_Proc gPE[] = { hair_pe, hair2_pe, stroke_pe, dash_pe, one_d_pe }; |
| 78 | |
| 79 | static void fill_pe(SkPaint* paint) { |
| 80 | paint->setStyle(SkPaint::kFill_Style); |
| 81 | paint->setPathEffect(NULL); |
| 82 | } |
| 83 | |
| 84 | static void discrete_pe(SkPaint* paint) { |
| 85 | paint->setPathEffect(new SkDiscretePathEffect(10, 4))->unref(); |
| 86 | } |
| 87 | |
| 88 | class TilePathEffect : public Sk2DPathEffect { |
| 89 | static SkMatrix make_mat() { |
| 90 | SkMatrix m; |
| 91 | m.setScale(12, 12); |
| 92 | return m; |
| 93 | } |
| 94 | public: |
| 95 | TilePathEffect() : Sk2DPathEffect(make_mat()) {} |
| 96 | |
| 97 | protected: |
| 98 | virtual void next(const SkPoint& loc, int u, int v, SkPath* dst) { |
| 99 | dst->addCircle(loc.fX, loc.fY, 5); |
| 100 | } |
| 101 | }; |
| 102 | |
| 103 | static void tile_pe(SkPaint* paint) { |
| 104 | paint->setPathEffect(new TilePathEffect)->unref(); |
| 105 | } |
| 106 | |
| 107 | static const PE_Proc gPE2[] = { fill_pe, discrete_pe, tile_pe }; |
| 108 | |
| 109 | static void patheffect_slide(SkCanvas* canvas) { |
| 110 | SkPaint paint; |
| 111 | paint.setAntiAlias(true); |
| 112 | paint.setStyle(SkPaint::kStroke_Style); |
| 113 | |
| 114 | SkPath path; |
| 115 | path.moveTo(20, 20); |
| 116 | path.lineTo(70, 120); |
| 117 | path.lineTo(120, 30); |
| 118 | path.lineTo(170, 80); |
| 119 | path.lineTo(240, 50); |
| 120 | |
| 121 | size_t i; |
| 122 | canvas->save(); |
| 123 | for (i = 0; i < SK_ARRAY_COUNT(gPE); i++) { |
| 124 | gPE[i](&paint); |
| 125 | canvas->drawPath(path, paint); |
| 126 | canvas->translate(0, 75); |
| 127 | } |
| 128 | canvas->restore(); |
| 129 | |
| 130 | path.reset(); |
| 131 | SkRect r = { 0, 0, 250, 120 }; |
| 132 | path.addOval(r, SkPath::kCW_Direction); |
| 133 | r.inset(50, 50); |
| 134 | path.addRect(r, SkPath::kCCW_Direction); |
| 135 | |
| 136 | canvas->translate(320, 20); |
| 137 | for (i = 0; i < SK_ARRAY_COUNT(gPE2); i++) { |
| 138 | gPE2[i](&paint); |
| 139 | canvas->drawPath(path, paint); |
| 140 | canvas->translate(0, 160); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | /////////////////////////////////////////////////////////////////////////////// |
| 145 | |
| 146 | #include "SkGradientShader.h" |
| 147 | |
| 148 | struct GradData { |
| 149 | int fCount; |
| 150 | const SkColor* fColors; |
| 151 | const SkScalar* fPos; |
| 152 | }; |
| 153 | |
| 154 | static const SkColor gColors[] = { |
| 155 | SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK |
| 156 | }; |
| 157 | static const SkScalar gPos0[] = { 0, SK_Scalar1 }; |
| 158 | static const SkScalar gPos1[] = { SK_Scalar1/4, SK_Scalar1*3/4 }; |
| 159 | static const SkScalar gPos2[] = { |
| 160 | 0, SK_Scalar1/8, SK_Scalar1/2, SK_Scalar1*7/8, SK_Scalar1 |
| 161 | }; |
| 162 | |
| 163 | static const GradData gGradData[] = { |
| 164 | { 2, gColors, NULL }, |
| 165 | { 2, gColors, gPos0 }, |
| 166 | { 2, gColors, gPos1 }, |
| 167 | { 5, gColors, NULL }, |
| 168 | { 5, gColors, gPos2 } |
| 169 | }; |
| 170 | |
| 171 | static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data, |
| 172 | SkShader::TileMode tm, SkUnitMapper* mapper) { |
| 173 | return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos, |
| 174 | data.fCount, tm, mapper); |
| 175 | } |
| 176 | |
| 177 | static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data, |
| 178 | SkShader::TileMode tm, SkUnitMapper* mapper) { |
| 179 | SkPoint center; |
| 180 | center.set(SkScalarAve(pts[0].fX, pts[1].fX), |
| 181 | SkScalarAve(pts[0].fY, pts[1].fY)); |
| 182 | return SkGradientShader::CreateRadial(center, center.fX, data.fColors, |
| 183 | data.fPos, data.fCount, tm, mapper); |
| 184 | } |
| 185 | |
| 186 | static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data, |
| 187 | SkShader::TileMode tm, SkUnitMapper* mapper) { |
| 188 | SkPoint center; |
| 189 | center.set(SkScalarAve(pts[0].fX, pts[1].fX), |
| 190 | SkScalarAve(pts[0].fY, pts[1].fY)); |
| 191 | return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors, |
| 192 | data.fPos, data.fCount, mapper); |
| 193 | } |
| 194 | |
| 195 | static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data, |
| 196 | SkShader::TileMode tm, SkUnitMapper* mapper) { |
| 197 | SkPoint center0, center1; |
| 198 | center0.set(SkScalarAve(pts[0].fX, pts[1].fX), |
| 199 | SkScalarAve(pts[0].fY, pts[1].fY)); |
| 200 | center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5), |
| 201 | SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4)); |
| 202 | return SkGradientShader::CreateTwoPointRadial( |
| 203 | center1, (pts[1].fX - pts[0].fX) / 7, |
| 204 | center0, (pts[1].fX - pts[0].fX) / 2, |
| 205 | data.fColors, data.fPos, data.fCount, tm, mapper); |
| 206 | } |
| 207 | |
| 208 | typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data, |
| 209 | SkShader::TileMode tm, SkUnitMapper* mapper); |
| 210 | static const GradMaker gGradMakers[] = { |
| 211 | MakeLinear, MakeRadial, MakeSweep, Make2Radial |
| 212 | }; |
| 213 | |
| 214 | static void gradient_slide(SkCanvas* canvas) { |
| 215 | SkPoint pts[2] = { |
| 216 | { 0, 0 }, |
| 217 | { SkIntToScalar(100), SkIntToScalar(100) } |
| 218 | }; |
| 219 | SkShader::TileMode tm = SkShader::kClamp_TileMode; |
| 220 | SkRect r = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) }; |
| 221 | SkPaint paint; |
| 222 | paint.setAntiAlias(true); |
| 223 | paint.setDither(true); |
| 224 | |
| 225 | canvas->translate(SkIntToScalar(20), SkIntToScalar(10)); |
| 226 | for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); i++) { |
| 227 | canvas->save(); |
| 228 | for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); j++) { |
| 229 | SkShader* shader = gGradMakers[j](pts, gGradData[i], tm, NULL); |
| 230 | paint.setShader(shader); |
| 231 | canvas->drawRect(r, paint); |
| 232 | shader->unref(); |
| 233 | canvas->translate(0, SkIntToScalar(120)); |
| 234 | } |
| 235 | canvas->restore(); |
| 236 | canvas->translate(SkIntToScalar(120), 0); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | /////////////////////////////////////////////////////////////////////////////// |
| 241 | |
| 242 | #include "SkPathMeasure.h" |
| 243 | |
| 244 | static SkScalar getpathlen(const SkPath& path) { |
| 245 | SkPathMeasure meas(path, false); |
| 246 | return meas.getLength(); |
| 247 | } |
| 248 | |
| 249 | static void textonpath_slide(SkCanvas* canvas) { |
| 250 | const char* text = "Displacement"; |
| 251 | size_t len =strlen(text); |
| 252 | SkPath path; |
| 253 | path.moveTo(100, 300); |
| 254 | path.quadTo(300, 100, 500, 300); |
| 255 | path.offset(0, -100); |
| 256 | |
| 257 | SkPaint paint; |
| 258 | paint.setAntiAlias(true); |
| 259 | paint.setTextSize(40); |
| 260 | |
| 261 | paint.setStyle(SkPaint::kStroke_Style); |
| 262 | canvas->drawPath(path, paint); |
| 263 | paint.setStyle(SkPaint::kFill_Style); |
| 264 | |
| 265 | SkScalar x = 50; |
| 266 | paint.setColor(0xFF008800); |
| 267 | canvas->drawTextOnPathHV(text, len, path, |
| 268 | x, paint.getTextSize()*2/3, paint); |
| 269 | paint.setColor(SK_ColorRED); |
| 270 | canvas->drawTextOnPathHV(text, len, path, |
| 271 | x + 60, 0, paint); |
| 272 | paint.setColor(SK_ColorBLUE); |
| 273 | canvas->drawTextOnPathHV(text, len, path, |
| 274 | x + 120, -paint.getTextSize()*2/3, paint); |
| 275 | |
| 276 | path.offset(0, 200); |
| 277 | paint.setTextAlign(SkPaint::kRight_Align); |
| 278 | |
| 279 | text = "Matrices"; |
| 280 | len = strlen(text); |
| 281 | SkScalar pathLen = getpathlen(path); |
| 282 | SkMatrix matrix; |
| 283 | |
| 284 | paint.setColor(SK_ColorBLACK); |
| 285 | paint.setStyle(SkPaint::kStroke_Style); |
| 286 | canvas->drawPath(path, paint); |
| 287 | paint.setStyle(SkPaint::kFill_Style); |
| 288 | |
| 289 | paint.setTextSize(50); |
| 290 | canvas->drawTextOnPath(text, len, path, NULL, paint); |
| 291 | |
| 292 | paint.setColor(SK_ColorRED); |
| 293 | matrix.setScale(-SK_Scalar1, SK_Scalar1); |
| 294 | matrix.postTranslate(pathLen, 0); |
| 295 | canvas->drawTextOnPath(text, len, path, &matrix, paint); |
| 296 | |
| 297 | paint.setColor(SK_ColorBLUE); |
| 298 | matrix.setScale(SK_Scalar1, -SK_Scalar1); |
| 299 | canvas->drawTextOnPath(text, len, path, &matrix, paint); |
| 300 | |
| 301 | paint.setColor(0xFF008800); |
| 302 | matrix.setScale(-SK_Scalar1, -SK_Scalar1); |
| 303 | matrix.postTranslate(pathLen, 0); |
| 304 | canvas->drawTextOnPath(text, len, path, &matrix, paint); |
| 305 | } |
| 306 | |
| 307 | /////////////////////////////////////////////////////////////////////////////// |
| 308 | |
| 309 | #include "SkImageDecoder.h" |
| 310 | #include "SkOSFile.h" |
| 311 | #include "SkRandom.h" |
| 312 | #include "SkStream.h" |
| 313 | #include "SkNinePatch.h" |
| 314 | |
| 315 | static SkShader* make_shader0(SkIPoint* size) { |
| 316 | SkBitmap bm; |
| 317 | |
| 318 | SkImageDecoder::DecodeFile("/skimages/logo.gif", &bm); |
| 319 | size->set(bm.width(), bm.height()); |
| 320 | return SkShader::CreateBitmapShader(bm, SkShader::kClamp_TileMode, |
| 321 | SkShader::kClamp_TileMode); |
| 322 | } |
| 323 | |
| 324 | static SkShader* make_shader1(const SkIPoint& size) { |
| 325 | SkPoint pts[] = { 0, 0, SkIntToScalar(size.fX), SkIntToScalar(size.fY) }; |
| 326 | SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorRED }; |
| 327 | return SkGradientShader::CreateLinear(pts, colors, NULL, |
| 328 | SK_ARRAY_COUNT(colors), SkShader::kMirror_TileMode, NULL); |
| 329 | } |
| 330 | |
| 331 | struct Rec { |
| 332 | SkCanvas::VertexMode fMode; |
| 333 | int fCount; |
| 334 | SkPoint* fVerts; |
| 335 | SkPoint* fTexs; |
| 336 | |
| 337 | Rec() : fCount(0), fVerts(NULL), fTexs(NULL) {} |
| 338 | ~Rec() { delete[] fVerts; delete[] fTexs; } |
| 339 | }; |
| 340 | |
| 341 | void make_tris(Rec* rec) { |
| 342 | int n = 10; |
| 343 | SkRandom rand; |
| 344 | |
| 345 | rec->fMode = SkCanvas::kTriangles_VertexMode; |
| 346 | rec->fCount = n * 3; |
| 347 | rec->fVerts = new SkPoint[rec->fCount]; |
| 348 | |
| 349 | for (int i = 0; i < n; i++) { |
| 350 | SkPoint* v = &rec->fVerts[i*3]; |
| 351 | for (int j = 0; j < 3; j++) { |
| 352 | v[j].set(rand.nextUScalar1() * 250, rand.nextUScalar1() * 250); |
| 353 | } |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | void make_fan(Rec* rec, int texWidth, int texHeight) { |
| 358 | const SkScalar tx = SkIntToScalar(texWidth); |
| 359 | const SkScalar ty = SkIntToScalar(texHeight); |
| 360 | const int n = 24; |
| 361 | |
| 362 | rec->fMode = SkCanvas::kTriangleFan_VertexMode; |
| 363 | rec->fCount = n + 2; |
| 364 | rec->fVerts = new SkPoint[rec->fCount]; |
| 365 | rec->fTexs = new SkPoint[rec->fCount]; |
| 366 | |
| 367 | SkPoint* v = rec->fVerts; |
| 368 | SkPoint* t = rec->fTexs; |
| 369 | |
| 370 | v[0].set(0, 0); |
| 371 | t[0].set(0, 0); |
| 372 | for (int i = 0; i < n; i++) { |
| 373 | SkScalar cos; |
| 374 | SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos); |
| 375 | v[i+1].set(cos, sin); |
| 376 | t[i+1].set(i*tx/n, ty); |
| 377 | } |
| 378 | v[n+1] = v[1]; |
| 379 | t[n+1].set(tx, ty); |
| 380 | |
| 381 | SkMatrix m; |
| 382 | m.setScale(SkIntToScalar(100), SkIntToScalar(100)); |
| 383 | m.postTranslate(SkIntToScalar(110), SkIntToScalar(110)); |
| 384 | m.mapPoints(v, rec->fCount); |
| 385 | } |
| 386 | |
| 387 | void make_strip(Rec* rec, int texWidth, int texHeight) { |
| 388 | const SkScalar tx = SkIntToScalar(texWidth); |
| 389 | const SkScalar ty = SkIntToScalar(texHeight); |
| 390 | const int n = 24; |
| 391 | |
| 392 | rec->fMode = SkCanvas::kTriangleStrip_VertexMode; |
| 393 | rec->fCount = 2 * (n + 1); |
| 394 | rec->fVerts = new SkPoint[rec->fCount]; |
| 395 | rec->fTexs = new SkPoint[rec->fCount]; |
| 396 | |
| 397 | SkPoint* v = rec->fVerts; |
| 398 | SkPoint* t = rec->fTexs; |
| 399 | |
| 400 | for (int i = 0; i < n; i++) { |
| 401 | SkScalar cos; |
| 402 | SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos); |
| 403 | v[i*2 + 0].set(cos/2, sin/2); |
| 404 | v[i*2 + 1].set(cos, sin); |
| 405 | |
| 406 | t[i*2 + 0].set(tx * i / n, ty); |
| 407 | t[i*2 + 1].set(tx * i / n, 0); |
| 408 | } |
| 409 | v[2*n + 0] = v[0]; |
| 410 | v[2*n + 1] = v[1]; |
| 411 | |
| 412 | t[2*n + 0].set(tx, ty); |
| 413 | t[2*n + 1].set(tx, 0); |
| 414 | |
| 415 | SkMatrix m; |
| 416 | m.setScale(SkIntToScalar(100), SkIntToScalar(100)); |
| 417 | m.postTranslate(SkIntToScalar(110), SkIntToScalar(110)); |
| 418 | m.mapPoints(v, rec->fCount); |
| 419 | } |
| 420 | |
| 421 | static void mesh_slide(SkCanvas* canvas) { |
| 422 | Rec fRecs[3]; |
| 423 | SkIPoint size; |
| 424 | |
| 425 | SkShader* fShader0 = make_shader0(&size); |
| 426 | SkShader* fShader1 = make_shader1(size); |
| 427 | |
| 428 | make_strip(&fRecs[0], size.fX, size.fY); |
| 429 | make_fan(&fRecs[1], size.fX, size.fY); |
| 430 | make_tris(&fRecs[2]); |
| 431 | |
| 432 | |
| 433 | |
| 434 | SkPaint paint; |
| 435 | paint.setDither(true); |
| 436 | paint.setFilterBitmap(true); |
| 437 | |
| 438 | canvas->drawColor(SK_ColorLTGRAY); |
| 439 | for (int i = 0; i < SK_ARRAY_COUNT(fRecs); i++) { |
| 440 | canvas->save(); |
| 441 | |
| 442 | paint.setShader(NULL); |
| 443 | canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| 444 | fRecs[i].fVerts, fRecs[i].fTexs, |
| 445 | NULL, NULL, NULL, 0, paint); |
| 446 | |
| 447 | canvas->translate(SkIntToScalar(210), 0); |
| 448 | |
| 449 | paint.setShader(fShader0); |
| 450 | canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| 451 | fRecs[i].fVerts, fRecs[i].fTexs, |
| 452 | NULL, NULL, NULL, 0, paint); |
| 453 | |
| 454 | canvas->translate(SkIntToScalar(210), 0); |
| 455 | |
| 456 | paint.setShader(fShader1); |
| 457 | canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| 458 | fRecs[i].fVerts, fRecs[i].fTexs, |
| 459 | NULL, NULL, NULL, 0, paint); |
| 460 | canvas->restore(); |
| 461 | |
| 462 | canvas->translate(0, SkIntToScalar(250)); |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | /////////////////////////////////////////////////////////////////////////////// |
| 467 | |
| 468 | #include "SkImageEncoder.h" |
| 469 | |
| 470 | static const SlideProc gProc[] = { |
| 471 | patheffect_slide, |
| 472 | gradient_slide, |
| 473 | textonpath_slide, |
| 474 | mesh_slide |
| 475 | }; |
| 476 | |
| 477 | class SlideView : public SkView { |
| 478 | int fIndex; |
| 479 | public: |
| 480 | SlideView() { |
| 481 | fIndex = 0; |
| 482 | |
| 483 | SkBitmap bm; |
| 484 | bm.setConfig(SkBitmap::kARGB_8888_Config, 1024, 768); |
| 485 | bm.allocPixels(); |
| 486 | SkCanvas canvas(bm); |
| 487 | SkScalar s = SkIntToScalar(1024) / 640; |
| 488 | canvas.scale(s, s); |
| 489 | for (size_t i = 0; i < SK_ARRAY_COUNT(gProc); i++) { |
| 490 | canvas.save(); |
| 491 | canvas.drawColor(SK_ColorWHITE); |
| 492 | gProc[i](&canvas); |
| 493 | canvas.restore(); |
| 494 | SkString str; |
| 495 | str.printf("/skimages/slide_%d.png", i); |
| 496 | SkImageEncoder::EncodeFile(str.c_str(), bm, SkImageEncoder::kPNG_Type, 100); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | protected: |
| 501 | // overrides from SkEventSink |
| 502 | virtual bool onQuery(SkEvent* evt) { |
| 503 | if (SampleCode::TitleQ(*evt)) { |
| 504 | SampleCode::TitleR(evt, "Slides"); |
| 505 | return true; |
| 506 | } |
| 507 | return this->INHERITED::onQuery(evt); |
| 508 | } |
| 509 | |
| 510 | void drawBG(SkCanvas* canvas) { |
| 511 | canvas->drawColor(SK_ColorWHITE); |
| 512 | } |
| 513 | |
| 514 | virtual void onDraw(SkCanvas* canvas) { |
| 515 | this->drawBG(canvas); |
| 516 | |
| 517 | gProc[fIndex](canvas); |
| 518 | } |
| 519 | |
| 520 | virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) { |
| 521 | fIndex = (fIndex + 1) % SK_ARRAY_COUNT(gProc); |
| 522 | this->inval(NULL); |
| 523 | return NULL; |
| 524 | } |
| 525 | |
| 526 | private: |
| 527 | typedef SkView INHERITED; |
| 528 | }; |
| 529 | |
| 530 | ////////////////////////////////////////////////////////////////////////////// |
| 531 | |
| 532 | static SkView* MyFactory() { return new SlideView; } |
| 533 | static SkViewRegister reg(MyFactory); |
| 534 | |