/*
* 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; )