| #include "SampleCode.h" |
| #include "SkView.h" |
| #include "SkCanvas.h" |
| #include "SkGradientShader.h" |
| #include "SkGraphics.h" |
| #include "SkImageDecoder.h" |
| #include "SkPath.h" |
| #include "SkPorterDuff.h" |
| #include "SkRandom.h" |
| #include "SkRegion.h" |
| #include "SkShader.h" |
| #include "SkUtils.h" |
| #include "SkXfermode.h" |
| #include "SkShaderExtras.h" |
| #include "SkColorPriv.h" |
| #include "SkColorFilter.h" |
| #include "SkTime.h" |
| #include "SkTypeface.h" |
| |
| #include "SkImageRef.h" |
| #include "SkOSFile.h" |
| #include "SkStream.h" |
| #include "SkNinePatch.h" |
| |
| void setup_vertexbug(SkPoint verts[], SkPoint texs[], uint16_t index[]); |
| |
| static void drawbug(SkCanvas* canvas, SkScalar scale) { |
| SkBitmap bm, bm2; |
| |
| SkImageDecoder::DecodeFile("/skimages/btn_default_normal.9.png", &bm); |
| SkPaint paint; |
| |
| SkIRect subset; |
| subset.set(1, 1, bm.width() - 1, bm.height() - 1); |
| bm.extractSubset(&bm2, subset); |
| |
| #if 0 |
| SkPoint verts[16], texs[16]; |
| uint16_t index[54]; |
| |
| SkShader* s = SkShader::CreateBitmapShader(bm2, SkShader::kClamp_TileMode, |
| SkShader::kClamp_TileMode); |
| paint.setShader(s)->unref(); |
| |
| setup_vertexbug(verts, texs, index); |
| int indexCount = 6; // 54 |
| canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 16, verts, texs, |
| NULL, NULL, &index[6], indexCount, paint); |
| |
| #if 0 |
| paint.setShader(NULL); |
| canvas->drawVertices(SkCanvas::kTriangles_VertexMode, 16, verts, NULL, |
| NULL, NULL, index, indexCount, paint); |
| #endif |
| #else |
| SkRect dst; |
| SkIRect margin; |
| |
| dst.set(SkIntToScalar(10), SkIntToScalar(10), |
| SkIntToScalar(100) + scale, |
| SkIntToScalar(40) + scale); |
| margin.set(9, 9, 9, 9); |
| SkNinePatch::DrawNine(canvas, dst, bm2, margin, NULL); |
| #endif |
| } |
| |
| static SkShader* make_shader0(SkIPoint* size) { |
| SkBitmap bm; |
| |
| SkImageDecoder::DecodeFile("/skimages/logo.gif", &bm); |
| size->set(bm.width(), bm.height()); |
| return SkShader::CreateBitmapShader(bm, SkShader::kClamp_TileMode, |
| SkShader::kClamp_TileMode); |
| } |
| |
| static SkShader* make_shader1(const SkIPoint& size) { |
| SkPoint pts[] = { 0, 0, SkIntToScalar(size.fX), SkIntToScalar(size.fY) }; |
| SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorRED }; |
| return SkGradientShader::CreateLinear(pts, colors, NULL, |
| SK_ARRAY_COUNT(colors), SkShader::kMirror_TileMode, NULL); |
| } |
| |
| class VerticesView : public SkView { |
| SkShader* fShader0; |
| SkShader* fShader1; |
| |
| public: |
| VerticesView() { |
| SkIPoint size; |
| |
| fShader0 = make_shader0(&size); |
| fShader1 = make_shader1(size); |
| |
| make_strip(&fRecs[0], size.fX, size.fY); |
| make_fan(&fRecs[1], size.fX, size.fY); |
| make_tris(&fRecs[2]); |
| |
| fScale = SK_Scalar1; |
| } |
| |
| virtual ~VerticesView() { |
| fShader0->safeUnref(); |
| fShader1->safeUnref(); |
| } |
| |
| protected: |
| // overrides from SkEventSink |
| virtual bool onQuery(SkEvent* evt) { |
| if (SampleCode::TitleQ(*evt)) |
| { |
| SkString str("Vertices"); |
| SampleCode::TitleR(evt, str.c_str()); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void drawBG(SkCanvas* canvas) { |
| canvas->drawColor(SK_ColorGRAY); |
| } |
| |
| SkScalar fScale; |
| |
| virtual void onDraw(SkCanvas* canvas) { |
| this->drawBG(canvas); |
| |
| #if 1 |
| canvas->drawColor(SK_ColorWHITE); |
| canvas->translate(SK_Scalar1/2, SkIntToScalar(15) + SK_Scalar1/2); |
| canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); |
| drawbug(canvas, fScale); |
| fScale += SK_Scalar1/93; |
| this->inval(NULL); |
| return; |
| #endif |
| |
| SkPaint paint; |
| paint.setDither(true); |
| paint.setFilterBitmap(true); |
| |
| for (int i = 0; i < SK_ARRAY_COUNT(fRecs); i++) { |
| canvas->save(); |
| |
| paint.setShader(NULL); |
| canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| fRecs[i].fVerts, fRecs[i].fTexs, |
| NULL, NULL, NULL, 0, paint); |
| |
| canvas->translate(SkIntToScalar(250), 0); |
| |
| paint.setShader(fShader0); |
| canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| fRecs[i].fVerts, fRecs[i].fTexs, |
| NULL, NULL, NULL, 0, paint); |
| |
| canvas->translate(SkIntToScalar(250), 0); |
| |
| paint.setShader(fShader1); |
| canvas->drawVertices(fRecs[i].fMode, fRecs[i].fCount, |
| fRecs[i].fVerts, fRecs[i].fTexs, |
| NULL, NULL, NULL, 0, paint); |
| canvas->restore(); |
| |
| canvas->translate(0, SkIntToScalar(250)); |
| } |
| } |
| |
| virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) { |
| return new Click(this); |
| } |
| |
| virtual bool onClick(Click* click) { |
| // fCurrX = click->fICurr.fX; |
| // fCurrY = click->fICurr.fY; |
| this->inval(NULL); |
| return true; |
| } |
| |
| private: |
| struct Rec { |
| SkCanvas::VertexMode fMode; |
| int fCount; |
| SkPoint* fVerts; |
| SkPoint* fTexs; |
| |
| Rec() : fCount(0), fVerts(NULL), fTexs(NULL) {} |
| ~Rec() { delete[] fVerts; delete[] fTexs; } |
| }; |
| |
| void make_tris(Rec* rec) { |
| int n = 10; |
| SkRandom rand; |
| |
| rec->fMode = SkCanvas::kTriangles_VertexMode; |
| rec->fCount = n * 3; |
| rec->fVerts = new SkPoint[rec->fCount]; |
| |
| for (int i = 0; i < n; i++) { |
| SkPoint* v = &rec->fVerts[i*3]; |
| for (int j = 0; j < 3; j++) { |
| v[j].set(rand.nextUScalar1() * 250, rand.nextUScalar1() * 250); |
| } |
| } |
| } |
| |
| void make_fan(Rec* rec, int texWidth, int texHeight) { |
| const SkScalar tx = SkIntToScalar(texWidth); |
| const SkScalar ty = SkIntToScalar(texHeight); |
| const int n = 24; |
| |
| rec->fMode = SkCanvas::kTriangleFan_VertexMode; |
| rec->fCount = n + 2; |
| rec->fVerts = new SkPoint[rec->fCount]; |
| rec->fTexs = new SkPoint[rec->fCount]; |
| |
| SkPoint* v = rec->fVerts; |
| SkPoint* t = rec->fTexs; |
| |
| v[0].set(0, 0); |
| t[0].set(0, 0); |
| for (int i = 0; i < n; i++) { |
| SkScalar cos; |
| SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos); |
| v[i+1].set(cos, sin); |
| t[i+1].set(i*tx/n, ty); |
| } |
| v[n+1] = v[1]; |
| t[n+1].set(tx, ty); |
| |
| SkMatrix m; |
| m.setScale(SkIntToScalar(100), SkIntToScalar(100)); |
| m.postTranslate(SkIntToScalar(110), SkIntToScalar(110)); |
| m.mapPoints(v, rec->fCount); |
| } |
| |
| void make_strip(Rec* rec, int texWidth, int texHeight) { |
| const SkScalar tx = SkIntToScalar(texWidth); |
| const SkScalar ty = SkIntToScalar(texHeight); |
| const int n = 24; |
| |
| rec->fMode = SkCanvas::kTriangleStrip_VertexMode; |
| rec->fCount = 2 * (n + 1); |
| rec->fVerts = new SkPoint[rec->fCount]; |
| rec->fTexs = new SkPoint[rec->fCount]; |
| |
| SkPoint* v = rec->fVerts; |
| SkPoint* t = rec->fTexs; |
| |
| for (int i = 0; i < n; i++) { |
| SkScalar cos; |
| SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos); |
| v[i*2 + 0].set(cos/2, sin/2); |
| v[i*2 + 1].set(cos, sin); |
| |
| t[i*2 + 0].set(tx * i / n, ty); |
| t[i*2 + 1].set(tx * i / n, 0); |
| } |
| v[2*n + 0] = v[0]; |
| v[2*n + 1] = v[1]; |
| |
| t[2*n + 0].set(tx, ty); |
| t[2*n + 1].set(tx, 0); |
| |
| SkMatrix m; |
| m.setScale(SkIntToScalar(100), SkIntToScalar(100)); |
| m.postTranslate(SkIntToScalar(110), SkIntToScalar(110)); |
| m.mapPoints(v, rec->fCount); |
| } |
| |
| Rec fRecs[3]; |
| |
| typedef SkView INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static SkView* MyFactory() { return new VerticesView; } |
| static SkViewRegister reg(MyFactory); |
| |