reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | #include "SampleCode.h" |
| 2 | #include "SkView.h" |
| 3 | #include "SkCanvas.h" |
| 4 | #include "SkGradientShader.h" |
| 5 | #include "SkGraphics.h" |
| 6 | #include "SkImageDecoder.h" |
| 7 | #include "SkPath.h" |
| 8 | #include "SkPorterDuff.h" |
| 9 | #include "SkRandom.h" |
| 10 | #include "SkRegion.h" |
| 11 | #include "SkShader.h" |
| 12 | #include "SkUtils.h" |
| 13 | #include "SkXfermode.h" |
| 14 | #include "SkShaderExtras.h" |
| 15 | #include "SkColorPriv.h" |
| 16 | #include "SkColorFilter.h" |
| 17 | #include "SkTime.h" |
| 18 | #include "SkTypeface.h" |
| 19 | |
| 20 | #include "SkImageRef.h" |
| 21 | #include "SkOSFile.h" |
| 22 | #include "SkStream.h" |
| 23 | #include "SkNinePatch.h" |
| 24 | |
| 25 | void setup_vertexbug(SkPoint verts[], SkPoint texs[], uint16_t index[]); |
| 26 | |
| 27 | static void drawbug(SkCanvas* canvas, SkScalar scale) { |
| 28 | SkBitmap bm, bm2; |
| 29 | |
| 30 | SkImageDecoder::DecodeFile("/skimages/btn_default_normal.9.png", &bm); |
| 31 | SkPaint paint; |
| 32 | |
| 33 | SkIRect subset; |
| 34 | subset.set(1, 1, bm.width() - 1, bm.height() - 1); |
| 35 | bm.extractSubset(&bm2, subset); |
| 36 | |
| 37 | #if 0 |
| 38 | SkPoint verts[16], texs[16]; |
| 39 | uint16_t index[54]; |
| 40 | |
| 41 | SkShader* s = SkShader::CreateBitmapShader(bm2, SkShader::kClamp_TileMode, |
| 42 | SkShader::kClamp_TileMode); |
| 43 | paint.setShader(s)->unref(); |
| 44 | |
| 45 | setup_vertexbug(verts, texs, index); |
| 46 | int indexCount = 6; // 54 |
| 47 | canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 16, verts, texs, |
| 48 | NULL, NULL, &index[6], indexCount, paint); |
| 49 | |
| 50 | #if 0 |
| 51 | paint.setShader(NULL); |
| 52 | canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 16, verts, NULL, |
| 53 | NULL, NULL, index, indexCount, paint); |
| 54 | #endif |
| 55 | #else |
| 56 | SkRect dst; |
| 57 | SkIRect margin; |
| 58 | |
| 59 | dst.set(SkIntToScalar(10), SkIntToScalar(10), |
| 60 | SkIntToScalar(100) + scale, |
| 61 | SkIntToScalar(40) + scale); |
| 62 | margin.set(9, 9, 9, 9); |
| 63 | SkNinePatch::DrawNine(canvas, dst, bm2, margin, NULL); |
| 64 | #endif |
| 65 | } |
| 66 | |
| 67 | static SkShader* make_shader0(SkIPoint* size) { |
| 68 | SkBitmap bm; |
| 69 | |
| 70 | SkImageDecoder::DecodeFile("/skimages/logo.gif", &bm); |
| 71 | size->set(bm.width(), bm.height()); |
| 72 | return SkShader::CreateBitmapShader(bm, SkShader::kClamp_TileMode, |
| 73 | SkShader::kClamp_TileMode); |
| 74 | } |
| 75 | |
| 76 | static SkShader* make_shader1(const SkIPoint& size) { |
| 77 | SkPoint pts[] = { 0, 0, SkIntToScalar(size.fX), SkIntToScalar(size.fY) }; |
| 78 | SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorRED }; |
| 79 | return SkGradientShader::CreateLinear(pts, colors, NULL, |
| 80 | SK_ARRAY_COUNT(colors), SkShader::kMirror_TileMode, NULL); |
| 81 | } |
| 82 | |
| 83 | class VerticesView : public SkView { |
| 84 | SkShader* fShader0; |
| 85 | SkShader* fShader1; |
| 86 | |
| 87 | public: |
| 88 | VerticesView() { |
| 89 | SkIPoint size; |
| 90 | |
| 91 | fShader0 = make_shader0(&size); |
| 92 | fShader1 = make_shader1(size); |
| 93 | |
| 94 | make_strip(&fRecs[0], size.fX, size.fY); |
| 95 | make_fan(&fRecs[1], size.fX, size.fY); |
| 96 | make_tris(&fRecs[2]); |
| 97 | |
| 98 | fScale = SK_Scalar1; |
| 99 | } |
| 100 | |
| 101 | virtual ~VerticesView() { |
| 102 | fShader0->safeUnref(); |
| 103 | fShader1->safeUnref(); |
| 104 | } |
| 105 | |
| 106 | protected: |
| 107 | // overrides from SkEventSink |
| 108 | virtual bool onQuery(SkEvent* evt) { |
| 109 | if (SampleCode::TitleQ(*evt)) |
| 110 | { |
| 111 | SkString str("Vertices"); |
| 112 | SampleCode::TitleR(evt, str.c_str()); |
| 113 | return true; |
| 114 | } |
| 115 | return this->INHERITED::onQuery(evt); |
| 116 | } |
| 117 | |
| 118 | void drawBG(SkCanvas* canvas) { |
| 119 | canvas->drawColor(SK_ColorGRAY); |
| 120 | } |
| 121 | |
| 122 | SkScalar fScale; |
| 123 | |
| 124 | virtual void onDraw(SkCanvas* canvas) { |
| 125 | this->drawBG(canvas); |
| 126 | |
| 127 | #if 1 |
| 128 | canvas->drawColor(SK_ColorWHITE); |
| 129 | canvas->translate(SK_Scalar1/2, SkIntToScalar(15) + SK_Scalar1/2); |
| 130 | canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); |
| 131 | drawbug(canvas, fScale); |
| 132 | fScale += SK_Scalar1/93; |
| 133 | this->inval(NULL); |
| 134 | return; |
| 135 | #endif |
| 136 | |
| 137 | SkPaint paint; |
| 138 | paint.setDither(true); |
| 139 | paint.setFilterBitmap(true); |
| 140 | |
| 141 | for (int i = 0; i < SK_ARRAY_COUNT(fRecs); i++) { |
| 142 | canvas->save(); |
| 143 | |
| 144 | paint.setShader(NULL); |
| 145 | canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| 146 | fRecs[i].fVerts, fRecs[i].fTexs, |
| 147 | NULL, NULL, NULL, 0, paint); |
| 148 | |
| 149 | canvas->translate(SkIntToScalar(250), 0); |
| 150 | |
| 151 | paint.setShader(fShader0); |
| 152 | canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| 153 | fRecs[i].fVerts, fRecs[i].fTexs, |
| 154 | NULL, NULL, NULL, 0, paint); |
| 155 | |
| 156 | canvas->translate(SkIntToScalar(250), 0); |
| 157 | |
| 158 | paint.setShader(fShader1); |
| 159 | canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| 160 | fRecs[i].fVerts, fRecs[i].fTexs, |
| 161 | NULL, NULL, NULL, 0, paint); |
| 162 | canvas->restore(); |
| 163 | |
| 164 | canvas->translate(0, SkIntToScalar(250)); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) { |
| 169 | return new Click(this); |
| 170 | } |
| 171 | |
| 172 | virtual bool onClick(Click* click) { |
| 173 | // fCurrX = click->fICurr.fX; |
| 174 | // fCurrY = click->fICurr.fY; |
| 175 | this->inval(NULL); |
| 176 | return true; |
| 177 | } |
| 178 | |
| 179 | private: |
| 180 | struct Rec { |
| 181 | SkCanvas::VertexMode fMode; |
| 182 | int fCount; |
| 183 | SkPoint* fVerts; |
| 184 | SkPoint* fTexs; |
| 185 | |
| 186 | Rec() : fCount(0), fVerts(NULL), fTexs(NULL) {} |
| 187 | ~Rec() { delete[] fVerts; delete[] fTexs; } |
| 188 | }; |
| 189 | |
| 190 | void make_tris(Rec* rec) { |
| 191 | int n = 10; |
| 192 | SkRandom rand; |
| 193 | |
| 194 | rec->fMode = SkCanvas::kTriangles_VertexMode; |
| 195 | rec->fCount = n * 3; |
| 196 | rec->fVerts = new SkPoint[rec->fCount]; |
| 197 | |
| 198 | for (int i = 0; i < n; i++) { |
| 199 | SkPoint* v = &rec->fVerts[i*3]; |
| 200 | for (int j = 0; j < 3; j++) { |
| 201 | v[j].set(rand.nextUScalar1() * 250, rand.nextUScalar1() * 250); |
| 202 | } |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | void make_fan(Rec* rec, int texWidth, int texHeight) { |
| 207 | const SkScalar tx = SkIntToScalar(texWidth); |
| 208 | const SkScalar ty = SkIntToScalar(texHeight); |
| 209 | const int n = 24; |
| 210 | |
| 211 | rec->fMode = SkCanvas::kTriangleFan_VertexMode; |
| 212 | rec->fCount = n + 2; |
| 213 | rec->fVerts = new SkPoint[rec->fCount]; |
| 214 | rec->fTexs = new SkPoint[rec->fCount]; |
| 215 | |
| 216 | SkPoint* v = rec->fVerts; |
| 217 | SkPoint* t = rec->fTexs; |
| 218 | |
| 219 | v[0].set(0, 0); |
| 220 | t[0].set(0, 0); |
| 221 | for (int i = 0; i < n; i++) { |
| 222 | SkScalar cos; |
| 223 | SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos); |
| 224 | v[i+1].set(cos, sin); |
| 225 | t[i+1].set(i*tx/n, ty); |
| 226 | } |
| 227 | v[n+1] = v[1]; |
| 228 | t[n+1].set(tx, ty); |
| 229 | |
| 230 | SkMatrix m; |
| 231 | m.setScale(SkIntToScalar(100), SkIntToScalar(100)); |
| 232 | m.postTranslate(SkIntToScalar(110), SkIntToScalar(110)); |
| 233 | m.mapPoints(v, rec->fCount); |
| 234 | } |
| 235 | |
| 236 | void make_strip(Rec* rec, int texWidth, int texHeight) { |
| 237 | const SkScalar tx = SkIntToScalar(texWidth); |
| 238 | const SkScalar ty = SkIntToScalar(texHeight); |
| 239 | const int n = 24; |
| 240 | |
| 241 | rec->fMode = SkCanvas::kTriangleStrip_VertexMode; |
| 242 | rec->fCount = 2 * (n + 1); |
| 243 | rec->fVerts = new SkPoint[rec->fCount]; |
| 244 | rec->fTexs = new SkPoint[rec->fCount]; |
| 245 | |
| 246 | SkPoint* v = rec->fVerts; |
| 247 | SkPoint* t = rec->fTexs; |
| 248 | |
| 249 | for (int i = 0; i < n; i++) { |
| 250 | SkScalar cos; |
| 251 | SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos); |
| 252 | v[i*2 + 0].set(cos/2, sin/2); |
| 253 | v[i*2 + 1].set(cos, sin); |
| 254 | |
| 255 | t[i*2 + 0].set(tx * i / n, ty); |
| 256 | t[i*2 + 1].set(tx * i / n, 0); |
| 257 | } |
| 258 | v[2*n + 0] = v[0]; |
| 259 | v[2*n + 1] = v[1]; |
| 260 | |
| 261 | t[2*n + 0].set(tx, ty); |
| 262 | t[2*n + 1].set(tx, 0); |
| 263 | |
| 264 | SkMatrix m; |
| 265 | m.setScale(SkIntToScalar(100), SkIntToScalar(100)); |
| 266 | m.postTranslate(SkIntToScalar(110), SkIntToScalar(110)); |
| 267 | m.mapPoints(v, rec->fCount); |
| 268 | } |
| 269 | |
| 270 | Rec fRecs[3]; |
| 271 | |
| 272 | typedef SkView INHERITED; |
| 273 | }; |
| 274 | |
| 275 | ////////////////////////////////////////////////////////////////////////////// |
| 276 | |
| 277 | static SkView* MyFactory() { return new VerticesView; } |
| 278 | static SkViewRegister reg(MyFactory); |
| 279 | |