blob: 16a563b419c35ba9557dabc66591d294c4567332 [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/SkImage.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRRect.h"
#include "include/core/SkRect.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/core/SkTypes.h"
namespace skiagm {
// Draw various width thin rects at 1/8 horizontal pixel increments
class ThinRectsGM : public GM {
public:
ThinRectsGM(bool round) : fRound(round) {
this->setBGColor(0xFF000000);
}
protected:
SkString getName() const override { return SkString(fRound ? "thinroundrects" : "thinrects"); }
SkISize getISize() override { return SkISize::Make(240, 320); }
void onDraw(SkCanvas* canvas) override {
SkPaint white;
white.setColor(SK_ColorWHITE);
white.setAntiAlias(true);
SkPaint green;
green.setColor(SK_ColorGREEN);
green.setAntiAlias(true);
for (int i = 0; i < 8; ++i) {
canvas->save();
canvas->translate(i*0.125f, i*40.0f);
this->drawVertRects(canvas, white);
canvas->translate(40.0f, 0.0f);
this->drawVertRects(canvas, green);
canvas->restore();
canvas->save();
canvas->translate(80.0f, i*40.0f + i*0.125f);
this->drawHorizRects(canvas, white);
canvas->translate(40.0f, 0.0f);
this->drawHorizRects(canvas, green);
canvas->restore();
canvas->save();
canvas->translate(160.0f + i*0.125f,
i*40.0f + i*0.125f);
this->drawSquares(canvas, white);
canvas->translate(40.0f, 0.0f);
this->drawSquares(canvas, green);
canvas->restore();
}
}
private:
void drawVertRects(SkCanvas* canvas, const SkPaint& p) {
constexpr SkRect vertRects[] = {
{ 1, 1, 5.0f, 21 }, // 4 pix wide
{ 8, 1, 10.0f, 21 }, // 2 pix wide
{ 13, 1, 14.0f, 21 }, // 1 pix wide
{ 17, 1, 17.5f, 21 }, // 1/2 pix wide
{ 21, 1, 21.25f, 21 }, // 1/4 pix wide
{ 25, 1, 25.125f, 21 }, // 1/8 pix wide
{ 29, 1, 29.0f, 21 } // 0 pix wide
};
static constexpr SkVector radii[4] = {{1/32.f, 2/32.f}, {3/32.f, 1/32.f}, {2/32.f, 3/32.f},
{1/32.f, 3/32.f}};
SkRRect rrect;
for (size_t j = 0; j < std::size(vertRects); ++j) {
if (fRound) {
rrect.setRectRadii(vertRects[j], radii);
canvas->drawRRect(rrect, p);
} else {
canvas->drawRect(vertRects[j], p);
}
}
}
void drawHorizRects(SkCanvas* canvas, const SkPaint& p) {
constexpr SkRect horizRects[] = {
{ 1, 1, 21, 5.0f }, // 4 pix high
{ 1, 8, 21, 10.0f }, // 2 pix high
{ 1, 13, 21, 14.0f }, // 1 pix high
{ 1, 17, 21, 17.5f }, // 1/2 pix high
{ 1, 21, 21, 21.25f }, // 1/4 pix high
{ 1, 25, 21, 25.125f }, // 1/8 pix high
{ 1, 29, 21, 29.0f } // 0 pix high
};
SkRRect rrect;
for (size_t j = 0; j < std::size(horizRects); ++j) {
if (fRound) {
rrect.setNinePatch(horizRects[j], 1/32.f, 2/32.f, 3/32.f, 4/32.f);
canvas->drawRRect(rrect, p);
} else {
canvas->drawRect(horizRects[j], p);
}
}
}
void drawSquares(SkCanvas* canvas, const SkPaint& p) {
constexpr SkRect squares[] = {
{ 1, 1, 5.0f, 5.0f }, // 4 pix
{ 8, 8, 10.0f, 10.0f }, // 2 pix
{ 13, 13, 14.0f, 14.0f }, // 1 pix
{ 17, 17, 17.5f, 17.5f }, // 1/2 pix
{ 21, 21, 21.25f, 21.25f }, // 1/4 pix
{ 25, 25, 25.125f, 25.125f }, // 1/8 pix
{ 29, 29, 29.0f, 29.0f } // 0 pix
};
SkRRect rrect;
for (size_t j = 0; j < std::size(squares); ++j) {
if (fRound) {
rrect.setRectXY(squares[j], 1/32.f, 2/32.f);
canvas->drawRRect(rrect, p);
} else {
canvas->drawRect(squares[j], p);
}
}
}
const bool fRound;
using INHERITED = GM;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new ThinRectsGM(false); )
DEF_GM( return new ThinRectsGM(true); )
} // namespace skiagm
DEF_SIMPLE_GM_CAN_FAIL(clipped_thinrect, canvas, errorMsg, 256, 256) {
auto zoomed = canvas->makeSurface(canvas->imageInfo().makeWH(10, 10));
if (!zoomed) {
errorMsg->printf("makeSurface not supported");
return skiagm::DrawResult::kSkip;
}
auto zoomedCanvas = zoomed->getCanvas();
SkPaint p;
p.setColor(SK_ColorRED);
p.setAntiAlias(true);
p.setStyle(SkPaint::kFill_Style);
zoomedCanvas->save();
zoomedCanvas->clipRect(SkRect::MakeXYWH(0, 5, 256, 10), true /*doAntialias*/);
zoomedCanvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 5.5), p);
zoomedCanvas->restore();
// Zoom-in. Should see one line of red representing zoomed in 1/2px coverage and *not*
// two lines of varying coverage from hairline rendering.
auto img = zoomed->makeImageSnapshot();
canvas->drawImageRect(img, SkRect::MakeXYWH(0, 10, 200, 200), SkSamplingOptions());
return skiagm::DrawResult::kOk;
}