#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);