blob: 19b0121ea542626c41cb9bfd6ec54e9c5b0131c5 [file] [log] [blame]
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPathBuilder.h"
#include "include/core/SkRRect.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "src/base/SkRandom.h"
namespace skiagm {
// Test out various combinations of nested rects, ovals and rrects.
class NestedGM : public GM {
public:
NestedGM(bool doAA, bool flipped) : fDoAA(doAA), fFlipped(flipped) {
this->setBGColor(0xFFDDDDDD);
}
protected:
SkString getName() const override {
SkString name("nested");
if (fFlipped) {
name.append("_flipY");
}
if (fDoAA) {
name.append("_aa");
} else {
name.append("_bw");
}
return name;
}
SkISize getISize() override { return SkISize::Make(kImageWidth, kImageHeight); }
enum Shapes {
kRect_Shape = 0,
kRRect_Shape,
kOval_Shape,
kShapeCount
};
static void AddShape(SkPathBuilder* b, const SkRect& rect, Shapes shape, SkPathDirection dir) {
switch (shape) {
case kRect_Shape:
b->addRect(rect, dir);
break;
case kRRect_Shape: {
SkRRect rr;
rr.setRectXY(rect, 5, 5);
b->addRRect(rr, dir);
break;
}
case kOval_Shape:
b->addOval(rect, dir);
break;
default:
break;
}
}
void onDraw(SkCanvas* canvas) override {
SkPaint shapePaint;
shapePaint.setColor(SK_ColorBLACK);
shapePaint.setAntiAlias(fDoAA);
SkRect outerRect = SkRect::MakeWH(40, 40);
SkRect innerRects[] = {
{ 10, 10, 30, 30 }, // small
{ .5f, 18, 4.5f, 22 } // smaller and offset to left
};
// draw a background pattern to make transparency errors more apparent
SkRandom rand;
for (int y = 0; y < kImageHeight; y += 10) {
for (int x = 0; x < kImageWidth; x += 10) {
SkRect r = SkRect::MakeXYWH(SkIntToScalar(x),
SkIntToScalar(y),
10, 10);
SkPaint p;
p.setColor(rand.nextU() | 0xFF000000);
canvas->drawRect(r, p);
}
}
SkScalar xOff = 2, yOff = 2;
for (int outerShape = 0; outerShape < kShapeCount; ++outerShape) {
for (int innerShape = 0; innerShape < kShapeCount; ++innerShape) {
for (size_t innerRect = 0; innerRect < std::size(innerRects); ++innerRect) {
SkPathBuilder builder;
AddShape(&builder, outerRect, (Shapes) outerShape, SkPathDirection::kCW);
AddShape(&builder, innerRects[innerRect], (Shapes) innerShape,
SkPathDirection::kCCW);
canvas->save();
if (fFlipped) {
canvas->scale(1.0f, -1.0f);
canvas->translate(xOff, -yOff - 40.0f);
} else {
canvas->translate(xOff, yOff);
}
canvas->drawPath(builder.detach(), shapePaint);
canvas->restore();
xOff += 45;
}
}
xOff = 2;
yOff += 45;
}
}
private:
inline static constexpr int kImageWidth = 269;
inline static constexpr int kImageHeight = 134;
bool fDoAA;
bool fFlipped;
using INHERITED = GM;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new NestedGM(/* doAA = */ true, /* flipped = */ false); )
DEF_GM( return new NestedGM(/* doAA = */ false, /* flipped = */ false); )
DEF_GM( return new NestedGM(/* doAA = */ true, /* flipped = */ true); )
DEF_GM( return new NestedGM(/* doAA = */ false, /* flipped = */ true); )
DEF_SIMPLE_GM(nested_hairline_square, canvas, 64, 64) {
// See crbug.com/1234194 - This should draw 1 row of 3 stroked squares, with a second 0.5px
// shifted row of squares below it.
auto drawEllipses = [&]() {
canvas->save();
// Originally the SVG string "M5,14H0V9h5V14Z M1,13h3v-3H1V13Z" but that just specifies a
// 5px wide square outside a 3px wide square.
SkPath square;
square.addRect(SkRect::MakeLTRB(0.f, 9.f, 5.f, 14.f));
square.addRect(SkRect::MakeLTRB(1.f, 10.f, 4.f, 13.f), SkPathDirection::kCCW);
// From the bug, SVG viewbox was (0, 0, 24, 24), so the above coordinates are relative to
// that, but the svg was then the child of a div that was 16x16, so it's scaled down. This
// converts the 1px wide nested rects into subpixel nested rects.
canvas->scale(16.f / 24.f, 16.f / 24.f);
SkPaint paint;
paint.setColor(SkColorSetARGB(255, 70, 70, 70));
paint.setAntiAlias(true);
// The original SVG drew 3 separate paths, but these were just translations of the original
// path baked into a path string.
canvas->drawPath(square, paint);
canvas->translate(10.f, 0.f);
canvas->drawPath(square, paint);
canvas->translate(10.f, 0.f);
canvas->drawPath(square, paint);
canvas->restore();
};
drawEllipses();
canvas->translate(0.5f, 16.f);
drawEllipses();
}
} // namespace skiagm