/* * Copyright 2011 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "gm.h" #include "SkCanvas.h" #include "SkPaint.h" #include "SkPath.h" #include "SkRandom.h" // skbug.com/1316 shows that this cubic, when slightly clipped, creates big // (incorrect) changes to its control points. class ClippedCubicGM : public skiagm::GM { public: ClippedCubicGM() {} protected: SkString onShortName() { return SkString("clippedcubic"); } SkISize onISize() { return SkISize::Make(1240, 390); } virtual void onDraw(SkCanvas* canvas) { SkPath path; path.moveTo(0, 0); path.cubicTo(140, 150, 40, 10, 170, 150); SkPaint paint; SkRect bounds = path.getBounds(); for (SkScalar dy = -1; dy <= 1; dy += 1) { canvas->save(); for (SkScalar dx = -1; dx <= 1; dx += 1) { canvas->save(); canvas->clipRect(bounds); canvas->translate(dx, dy); canvas->drawPath(path, paint); canvas->restore(); canvas->translate(bounds.width(), 0); } canvas->restore(); canvas->translate(0, bounds.height()); } } private: typedef skiagm::GM INHERITED; }; class CubicPathGM : public skiagm::GM { public: CubicPathGM() {} protected: SkString onShortName() { return SkString("cubicpath"); } SkISize onISize() { return SkISize::Make(1240, 390); } void drawPath(SkPath& path,SkCanvas* canvas,SkColor color, const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join, SkPaint::Style style, SkPath::FillType fill, SkScalar strokeWidth) { path.setFillType(fill); SkPaint paint; paint.setStrokeCap(cap); paint.setStrokeWidth(strokeWidth); paint.setStrokeJoin(join); paint.setColor(color); paint.setStyle(style); canvas->save(); canvas->clipRect(clip); canvas->drawPath(path, paint); canvas->restore(); } virtual void onDraw(SkCanvas* canvas) { struct FillAndName { SkPath::FillType fFill; const char* fName; }; static const FillAndName gFills[] = { {SkPath::kWinding_FillType, "Winding"}, {SkPath::kEvenOdd_FillType, "Even / Odd"}, {SkPath::kInverseWinding_FillType, "Inverse Winding"}, {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"}, }; struct StyleAndName { SkPaint::Style fStyle; const char* fName; }; static const StyleAndName gStyles[] = { {SkPaint::kFill_Style, "Fill"}, {SkPaint::kStroke_Style, "Stroke"}, {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"}, }; struct CapAndName { SkPaint::Cap fCap; SkPaint::Join fJoin; const char* fName; }; static const CapAndName gCaps[] = { {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"}, {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"}, {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"} }; struct PathAndName { SkPath fPath; const char* fName; }; PathAndName path; path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1); path.fPath.cubicTo(40*SK_Scalar1, 20*SK_Scalar1, 60*SK_Scalar1, 20*SK_Scalar1, 75*SK_Scalar1, 10*SK_Scalar1); path.fName = "moveTo-cubic"; SkPaint titlePaint; titlePaint.setColor(SK_ColorBLACK); titlePaint.setAntiAlias(true); sk_tool_utils::set_portable_typeface(&titlePaint); titlePaint.setTextSize(15 * SK_Scalar1); const char title[] = "Cubic Drawn Into Rectangle Clips With " "Indicated Style, Fill and Linecaps, with stroke width 10"; canvas->drawText(title, strlen(title), 20 * SK_Scalar1, 20 * SK_Scalar1, titlePaint); SkRandom rand; SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1); canvas->save(); canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1); canvas->save(); for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) { if (0 < cap) { canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0); } canvas->save(); for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) { if (0 < fill) { canvas->translate(0, rect.height() + 40 * SK_Scalar1); } canvas->save(); for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) { if (0 < style) { canvas->translate(rect.width() + 40 * SK_Scalar1, 0); } SkColor color = 0xff007000; this->drawPath(path.fPath, canvas, color, rect, gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle, gFills[fill].fFill, SK_Scalar1*10); SkPaint rectPaint; rectPaint.setColor(SK_ColorBLACK); rectPaint.setStyle(SkPaint::kStroke_Style); rectPaint.setStrokeWidth(-1); rectPaint.setAntiAlias(true); canvas->drawRect(rect, rectPaint); SkPaint labelPaint; labelPaint.setColor(color); labelPaint.setAntiAlias(true); sk_tool_utils::set_portable_typeface(&labelPaint); labelPaint.setTextSize(10 * SK_Scalar1); canvas->drawText(gStyles[style].fName, strlen(gStyles[style].fName), 0, rect.height() + 12 * SK_Scalar1, labelPaint); canvas->drawText(gFills[fill].fName, strlen(gFills[fill].fName), 0, rect.height() + 24 * SK_Scalar1, labelPaint); canvas->drawText(gCaps[cap].fName, strlen(gCaps[cap].fName), 0, rect.height() + 36 * SK_Scalar1, labelPaint); } canvas->restore(); } canvas->restore(); } canvas->restore(); canvas->restore(); } private: typedef skiagm::GM INHERITED; }; class CubicClosePathGM : public skiagm::GM { public: CubicClosePathGM() {} protected: SkString onShortName() { return SkString("cubicclosepath"); } SkISize onISize() { return SkISize::Make(1240, 390); } void drawPath(SkPath& path,SkCanvas* canvas,SkColor color, const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join, SkPaint::Style style, SkPath::FillType fill, SkScalar strokeWidth) { path.setFillType(fill); SkPaint paint; paint.setStrokeCap(cap); paint.setStrokeWidth(strokeWidth); paint.setStrokeJoin(join); paint.setColor(color); paint.setStyle(style); canvas->save(); canvas->clipRect(clip); canvas->drawPath(path, paint); canvas->restore(); } virtual void onDraw(SkCanvas* canvas) { struct FillAndName { SkPath::FillType fFill; const char* fName; }; static const FillAndName gFills[] = { {SkPath::kWinding_FillType, "Winding"}, {SkPath::kEvenOdd_FillType, "Even / Odd"}, {SkPath::kInverseWinding_FillType, "Inverse Winding"}, {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"}, }; struct StyleAndName { SkPaint::Style fStyle; const char* fName; }; static const StyleAndName gStyles[] = { {SkPaint::kFill_Style, "Fill"}, {SkPaint::kStroke_Style, "Stroke"}, {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"}, }; struct CapAndName { SkPaint::Cap fCap; SkPaint::Join fJoin; const char* fName; }; static const CapAndName gCaps[] = { {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"}, {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"}, {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"} }; struct PathAndName { SkPath fPath; const char* fName; }; PathAndName path; path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1); path.fPath.cubicTo(40*SK_Scalar1, 20*SK_Scalar1, 60*SK_Scalar1, 20*SK_Scalar1, 75*SK_Scalar1, 10*SK_Scalar1); path.fPath.close(); path.fName = "moveTo-cubic-close"; SkPaint titlePaint; titlePaint.setColor(SK_ColorBLACK); titlePaint.setAntiAlias(true); sk_tool_utils::set_portable_typeface(&titlePaint); titlePaint.setTextSize(15 * SK_Scalar1); const char title[] = "Cubic Closed Drawn Into Rectangle Clips With " "Indicated Style, Fill and Linecaps, with stroke width 10"; canvas->drawText(title, strlen(title), 20 * SK_Scalar1, 20 * SK_Scalar1, titlePaint); SkRandom rand; SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1); canvas->save(); canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1); canvas->save(); for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) { if (0 < cap) { canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0); } canvas->save(); for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) { if (0 < fill) { canvas->translate(0, rect.height() + 40 * SK_Scalar1); } canvas->save(); for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) { if (0 < style) { canvas->translate(rect.width() + 40 * SK_Scalar1, 0); } SkColor color = 0xff007000; this->drawPath(path.fPath, canvas, color, rect, gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle, gFills[fill].fFill, SK_Scalar1*10); SkPaint rectPaint; rectPaint.setColor(SK_ColorBLACK); rectPaint.setStyle(SkPaint::kStroke_Style); rectPaint.setStrokeWidth(-1); rectPaint.setAntiAlias(true); canvas->drawRect(rect, rectPaint); SkPaint labelPaint; labelPaint.setColor(color); labelPaint.setAntiAlias(true); sk_tool_utils::set_portable_typeface(&labelPaint); labelPaint.setTextSize(10 * SK_Scalar1); canvas->drawText(gStyles[style].fName, strlen(gStyles[style].fName), 0, rect.height() + 12 * SK_Scalar1, labelPaint); canvas->drawText(gFills[fill].fName, strlen(gFills[fill].fName), 0, rect.height() + 24 * SK_Scalar1, labelPaint); canvas->drawText(gCaps[cap].fName, strlen(gCaps[cap].fName), 0, rect.height() + 36 * SK_Scalar1, labelPaint); } canvas->restore(); } canvas->restore(); } canvas->restore(); canvas->restore(); } private: typedef skiagm::GM INHERITED; }; ////////////////////////////////////////////////////////////////////////////// DEF_GM( return new CubicPathGM; ) DEF_GM( return new CubicClosePathGM; ) DEF_GM( return new ClippedCubicGM; )