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/*
* 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.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkRRect.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(sk_tool_utils::color_to_565(0xFFDDDDDD));
}
protected:
SkString onShortName() override {
SkString name("nested");
if (fFlipped) {
name.append("_flipY");
}
if (fDoAA) {
name.append("_aa");
} else {
name.append("_bw");
}
return name;
}
SkISize onISize() override {
return SkISize::Make(kImageWidth, kImageHeight);
}
enum Shapes {
kRect_Shape = 0,
kRRect_Shape,
kOval_Shape,
kShapeCount
};
static void AddShape(SkPath* path, const SkRect& rect, Shapes shape, SkPath::Direction dir) {
switch (shape) {
case kRect_Shape:
path->addRect(rect, dir);
break;
case kRRect_Shape: {
SkRRect rr;
rr.setRectXY(rect, 5, 5);
path->addRRect(rr, dir);
break;
}
case kOval_Shape:
path->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 < SK_ARRAY_COUNT(innerRects); ++innerRect) {
SkPath path;
AddShape(&path, outerRect, (Shapes) outerShape, SkPath::kCW_Direction);
AddShape(&path, innerRects[innerRect], (Shapes) innerShape,
SkPath::kCCW_Direction);
canvas->save();
if (fFlipped) {
canvas->scale(1.0f, -1.0f);
canvas->translate(xOff, -yOff - 40.0f);
} else {
canvas->translate(xOff, yOff);
}
canvas->drawPath(path, shapePaint);
canvas->restore();
xOff += 45;
}
}
xOff = 2;
yOff += 45;
}
}
private:
static constexpr int kImageWidth = 269;
static constexpr int kImageHeight = 134;
bool fDoAA;
bool fFlipped;
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
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); )
}
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