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/*
* Copyright 2012 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 "SkCanvas.h"
#include "SkRRect.h"
#include "SkPath.h"
typedef void (*InsetProc)(const SkRRect&, SkScalar dx, SkScalar dy, SkRRect*);
static void inset0(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
for (int i = 0; i < 4; ++i) {
radii[i].fX -= dx;
radii[i].fY -= dy;
}
dst->setRectRadii(r, radii);
}
static void inset1(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
dst->setRectRadii(r, radii);
}
static void inset2(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
for (int i = 0; i < 4; ++i) {
if (radii[i].fX) {
radii[i].fX -= dx;
}
if (radii[i].fY) {
radii[i].fY -= dy;
}
}
dst->setRectRadii(r, radii);
}
static SkScalar prop(SkScalar radius, SkScalar delta, SkScalar newSize, SkScalar oldSize) {
return newSize * radius / oldSize;
}
static void inset3(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
for (int i = 0; i < 4; ++i) {
radii[i].fX = prop(radii[i].fX, dx, r.width(), src.rect().width());
radii[i].fY = prop(radii[i].fY, dy, r.height(), src.rect().height());
}
dst->setRectRadii(r, radii);
}
static void draw_rrect_color(SkCanvas* canvas, const SkRRect& rrect) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
if (rrect.isRect()) {
paint.setColor(SK_ColorRED);
} else if (rrect.isOval()) {
paint.setColor(0xFF008800);
} else if (rrect.isSimple()) {
paint.setColor(SK_ColorBLUE);
} else {
paint.setColor(SK_ColorBLACK);
}
canvas->drawRRect(rrect, paint);
}
static void drawrr(SkCanvas* canvas, const SkRRect& rrect, InsetProc proc) {
SkRRect rr;
for (SkScalar d = -30; d <= 30; d += 5) {
proc(rrect, d, d, &rr);
draw_rrect_color(canvas, rr);
}
}
class RRectGM : public skiagm::GM {
public:
RRectGM() {}
protected:
virtual SkString onShortName() {
return SkString("rrect");
}
virtual SkISize onISize() {
return SkISize::Make(820, 710);
}
virtual void onDraw(SkCanvas* canvas) {
static const InsetProc insetProcs[] = {
inset0, inset1, inset2, inset3
};
SkRRect rrect[4];
SkRect r = { 0, 0, 120, 100 };
SkVector radii[4] = {
{ 0, 0 }, { 30, 1 }, { 10, 40 }, { 40, 40 }
};
rrect[0].setRect(r);
rrect[1].setOval(r);
rrect[2].setRectXY(r, 20, 20);
rrect[3].setRectRadii(r, radii);
canvas->translate(50.5f, 50.5f);
for (size_t j = 0; j < SK_ARRAY_COUNT(insetProcs); ++j) {
canvas->save();
for (size_t i = 0; i < SK_ARRAY_COUNT(rrect); ++i) {
drawrr(canvas, rrect[i], insetProcs[j]);
canvas->translate(200, 0);
}
canvas->restore();
canvas->translate(0, 170);
}
}
private:
typedef GM INHERITED;
};
DEF_GM( return new RRectGM; )
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