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Diffstat (limited to 'chromium/third_party/skia/gm/cubicpaths.cpp')
-rw-r--r--chromium/third_party/skia/gm/cubicpaths.cpp356
1 files changed, 356 insertions, 0 deletions
diff --git a/chromium/third_party/skia/gm/cubicpaths.cpp b/chromium/third_party/skia/gm/cubicpaths.cpp
new file mode 100644
index 00000000000..39417010c11
--- /dev/null
+++ b/chromium/third_party/skia/gm/cubicpaths.cpp
@@ -0,0 +1,356 @@
+/*
+ * 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 "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:
+ virtual uint32_t onGetFlags() const SK_OVERRIDE {
+ return kSkipTiled_Flag;
+ }
+
+ 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:
+ virtual uint32_t onGetFlags() const SK_OVERRIDE {
+ return kSkipTiled_Flag;
+ }
+
+ 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);
+ titlePaint.setLCDRenderText(true);
+ 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);
+
+ SkLCGRandom 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);
+ labelPaint.setLCDRenderText(true);
+ 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:
+ virtual uint32_t onGetFlags() const SK_OVERRIDE {
+ return kSkipTiled_Flag;
+ }
+
+ 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);
+ titlePaint.setLCDRenderText(true);
+ 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);
+
+ SkLCGRandom 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);
+ labelPaint.setLCDRenderText(true);
+ 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; )
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 15:43:21 +0000