404 lines
14 KiB
C++
404 lines
14 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypeface.h"
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#include "include/core/SkTypes.h"
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#include "include/utils/SkRandom.h"
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#include "tools/ToolUtils.h"
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// https://bug.skia.org/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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SkString onShortName() override { return SkString("clippedcubic"); }
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SkISize onISize() override { return {1240, 390}; }
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void onDraw(SkCanvas* canvas) override {
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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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};
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class ClippedCubic2GM : public skiagm::GM {
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SkString onShortName() override { return SkString("clippedcubic2"); }
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SkISize onISize() override { return {1240, 390}; }
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void onDraw(SkCanvas* canvas) override {
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canvas->save();
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canvas->translate(-2, 120);
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drawOne(canvas, fPath, SkRect::MakeLTRB(0, 0, 80, 150));
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canvas->translate(0, 170);
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drawOne(canvas, fPath, SkRect::MakeLTRB(0, 0, 80, 100));
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canvas->translate(0, 170);
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drawOne(canvas, fPath, SkRect::MakeLTRB(0, 0, 30, 150));
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canvas->translate(0, 170);
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drawOne(canvas, fPath, SkRect::MakeLTRB(0, 0, 10, 150));
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canvas->restore();
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canvas->save();
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canvas->translate(20, -2);
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drawOne(canvas, fFlipped, SkRect::MakeLTRB(0, 0, 150, 80));
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canvas->translate(170, 0);
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drawOne(canvas, fFlipped, SkRect::MakeLTRB(0, 0, 100, 80));
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canvas->translate(170, 0);
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drawOne(canvas, fFlipped, SkRect::MakeLTRB(0, 0, 150, 30));
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canvas->translate(170, 0);
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drawOne(canvas, fFlipped, SkRect::MakeLTRB(0, 0, 150, 10));
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canvas->restore();
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}
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void drawOne(SkCanvas* canvas, const SkPath& path, const SkRect& clip) {
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SkPaint framePaint, fillPaint;
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framePaint.setStyle(SkPaint::kStroke_Style);
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canvas->drawRect(clip, framePaint);
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canvas->drawPath(path, framePaint);
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canvas->save();
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canvas->clipRect(clip);
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canvas->drawPath(path, fillPaint);
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canvas->restore();
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}
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void onOnceBeforeDraw() override {
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fPath.moveTo(69.7030518991886f, 0);
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fPath.cubicTo( 69.7030518991886f, 21.831149999999997f,
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58.08369508178456f, 43.66448333333333f, 34.8449814469765f, 65.5f);
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fPath.cubicTo( 11.608591683531916f, 87.33115f, -0.010765133872116195f, 109.16448333333332f,
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-0.013089005235602302f, 131);
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fPath.close();
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fFlipped = fPath;
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SkMatrix matrix;
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matrix.reset();
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matrix.setScaleX(0);
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matrix.setScaleY(0);
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matrix.setSkewX(1);
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matrix.setSkewY(1);
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fFlipped.transform(matrix);
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}
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SkPath fPath;
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SkPath fFlipped;
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private:
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using INHERITED = skiagm::GM;
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};
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class CubicPathGM : public skiagm::GM {
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SkString onShortName() override { return SkString("cubicpath"); }
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SkISize onISize() override { return {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, SkPathFillType 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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void onDraw(SkCanvas* canvas) override {
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struct FillAndName {
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SkPathFillType fFill;
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const char* fName;
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};
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constexpr FillAndName gFills[] = {
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{SkPathFillType::kWinding, "Winding"},
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{SkPathFillType::kEvenOdd, "Even / Odd"},
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{SkPathFillType::kInverseWinding, "Inverse Winding"},
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{SkPathFillType::kInverseEvenOdd, "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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constexpr 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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constexpr 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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SkFont font(ToolUtils::create_portable_typeface(), 15);
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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->drawString(title, 20, 20, font, 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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font.setSize(10);
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canvas->drawString(gStyles[style].fName, 0, rect.height() + 12, font, labelPaint);
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canvas->drawString(gFills[fill].fName, 0, rect.height() + 24, font, labelPaint);
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canvas->drawString(gCaps[cap].fName, 0, rect.height() + 36, font, 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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};
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class CubicClosePathGM : public skiagm::GM {
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SkString onShortName() override { return SkString("cubicclosepath"); }
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SkISize onISize() override { return {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, SkPathFillType 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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void onDraw(SkCanvas* canvas) override {
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struct FillAndName {
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SkPathFillType fFill;
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const char* fName;
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};
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constexpr FillAndName gFills[] = {
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{SkPathFillType::kWinding, "Winding"},
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{SkPathFillType::kEvenOdd, "Even / Odd"},
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{SkPathFillType::kInverseWinding, "Inverse Winding"},
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{SkPathFillType::kInverseEvenOdd, "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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constexpr 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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constexpr 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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SkFont font(ToolUtils::create_portable_typeface(), 15);
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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->drawString(title, 20, 20, font, 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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font.setSize(10);
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canvas->drawString(gStyles[style].fName, 0, rect.height() + 12, font, labelPaint);
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canvas->drawString(gFills[fill].fName, 0, rect.height() + 24, font, labelPaint);
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canvas->drawString(gCaps[cap].fName, 0, rect.height() + 36, font, 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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};
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DEF_SIMPLE_GM(bug5099, canvas, 50, 50) {
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SkPaint p;
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p.setColor(SK_ColorRED);
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p.setAntiAlias(true);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(10);
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SkPath path;
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path.moveTo(6, 27);
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path.cubicTo(31.5f, 1.5f, 3.5f, 4.5f, 29, 29);
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canvas->drawPath(path, p);
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}
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DEF_SIMPLE_GM(bug6083, canvas, 100, 50) {
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SkPaint p;
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p.setColor(SK_ColorRED);
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p.setAntiAlias(true);
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(15);
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canvas->translate(-500, -130);
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SkPath path;
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path.moveTo(500.988f, 155.200f);
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path.lineTo(526.109f, 155.200f);
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SkPoint p1 = { 526.109f, 155.200f };
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SkPoint p2 = { 525.968f, 212.968f };
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SkPoint p3 = { 526.109f, 241.840f };
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path.cubicTo(p1, p2, p3);
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canvas->drawPath(path, p);
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canvas->translate(50, 0);
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path.reset();
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p2.set(525.968f, 213.172f);
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path.moveTo(500.988f, 155.200f);
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path.lineTo(526.109f, 155.200f);
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path.cubicTo(p1, p2, p3);
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canvas->drawPath(path, p);
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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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DEF_GM( return new ClippedCubic2GM; )
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