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