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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGraphics.h"
#include "SkRandom.h"
#include "SkBlurDrawLooper.h"
#include "SkGradientShader.h"
typedef SkScalar (*MakePathProc)(SkPath*);
static SkScalar make_frame(SkPath* path) {
SkRect r = { 10, 10, 630, 470 };
path->addRoundRect(r, 15, 15);
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(5);
paint.getFillPath(*path, path);
return 15;
}
static SkScalar make_triangle(SkPath* path) {
static const int gCoord[] = {
10, 20, 15, 5, 30, 30
};
path->moveTo(SkIntToScalar(gCoord[0]), SkIntToScalar(gCoord[1]));
path->lineTo(SkIntToScalar(gCoord[2]), SkIntToScalar(gCoord[3]));
path->lineTo(SkIntToScalar(gCoord[4]), SkIntToScalar(gCoord[5]));
path->close();
path->offset(10, 0);
return SkIntToScalar(30);
}
static SkScalar make_rect(SkPath* path) {
SkRect r = { 10, 10, 30, 30 };
path->addRect(r);
path->offset(10, 0);
return SkIntToScalar(30);
}
static SkScalar make_oval(SkPath* path) {
SkRect r = { 10, 10, 30, 30 };
path->addOval(r);
path->offset(10, 0);
return SkIntToScalar(30);
}
static SkScalar make_sawtooth(SkPath* path) {
SkScalar x = SkIntToScalar(20);
SkScalar y = SkIntToScalar(20);
const SkScalar x0 = x;
const SkScalar dx = SK_Scalar1 * 5;
const SkScalar dy = SK_Scalar1 * 10;
path->moveTo(x, y);
for (int i = 0; i < 32; i++) {
x += dx;
path->lineTo(x, y - dy);
x += dx;
path->lineTo(x, y + dy);
}
path->lineTo(x, y + 2 * dy);
path->lineTo(x0, y + 2 * dy);
path->close();
return SkIntToScalar(30);
}
static SkScalar make_star(SkPath* path, int n) {
const SkScalar c = SkIntToScalar(45);
const SkScalar r = SkIntToScalar(20);
SkScalar rad = -SK_ScalarPI / 2;
const SkScalar drad = (n >> 1) * SK_ScalarPI * 2 / n;
path->moveTo(c, c - r);
for (int i = 1; i < n; i++) {
rad += drad;
SkScalar cosV, sinV = SkScalarSinCos(rad, &cosV);
path->lineTo(c + SkScalarMul(cosV, r), c + SkScalarMul(sinV, r));
}
path->close();
return r * 2 * 6 / 5;
}
static SkScalar make_star_5(SkPath* path) { return make_star(path, 5); }
static SkScalar make_star_13(SkPath* path) { return make_star(path, 13); }
static const MakePathProc gProcs[] = {
make_frame,
make_triangle,
make_rect,
make_oval,
make_sawtooth,
make_star_5,
make_star_13
};
#define N SK_ARRAY_COUNT(gProcs)
class PathFillView : public SampleView {
SkPath fPath[N];
SkScalar fDY[N];
public:
PathFillView() {
for (size_t i = 0; i < N; i++) {
fDY[i] = gProcs[i](&fPath[i]);
}
this->setBGColor(0xFFDDDDDD);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "PathFill");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
for (size_t i = 0; i < N; i++) {
canvas->drawPath(fPath[i], paint);
canvas->translate(0, fDY[i]);
}
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new PathFillView; }
static SkViewRegister reg(MyFactory);
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