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#include "SampleCode.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkView.h"
#include "SkBlurMaskFilter.h"
#include "SkColorMatrixFilter.h"
#include "SkDiscretePathEffect.h"
#include "SkGradientShader.h"
#include "SkEdgeClipper.h"
static void test_edgeclipper() {
SkPoint pts[] = {
{ -8.38822452e+21, -7.69721471e+19 },
{ 1.57645875e+23, 1.44634003e+21 },
{ 1.61519691e+23, 1.48208059e+21 },
{ 3.13963584e+23, 2.88057438e+21 }
};
SkRect clip = { 0, 0, 300, 200 };
SkEdgeClipper clipper;
clipper.clipCubic(pts, clip);
}
///////////
//#define COLOR 0xFFFF8844
#define COLOR 0xFF888888
static void paint_proc0(SkPaint* paint) {
}
static void paint_proc1(SkPaint* paint) {
paint->setMaskFilter(SkBlurMaskFilter::Create(2,
SkBlurMaskFilter::kNormal_BlurStyle))->unref();
}
static void paint_proc2(SkPaint* paint) {
SkScalar dir[3] = { 1, 1, 1};
paint->setMaskFilter(
SkBlurMaskFilter::CreateEmboss(dir, 0.1, 0.05, 1))->unref();
}
static void paint_proc3(SkPaint* paint) {
SkColor colors[] = { SK_ColorRED, COLOR, SK_ColorBLUE };
SkPoint pts[] = { 3, 0, 7, 5 };
paint->setShader(SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors),
SkShader::kMirror_TileMode))->unref();
}
static void paint_proc5(SkPaint* paint) {
paint_proc3(paint);
paint_proc2(paint);
}
typedef void (*PaintProc)(SkPaint*);
const PaintProc gPaintProcs[] = {
paint_proc0,
paint_proc1,
paint_proc2,
paint_proc3,
paint_proc5,
};
///////////////////////////////////////////////////////////////////////////////
class EffectsView : public SkView {
public:
SkPath fPath;
SkPaint fPaint[SK_ARRAY_COUNT(gPaintProcs)];
EffectsView() {
size_t i;
const float pts[] = {
0, 0,
10, 0,
10, 5,
20, -5,
10, -15,
10, -10,
0, -10
};
fPath.moveTo(pts[0], pts[1]);
for (i = 2; i < SK_ARRAY_COUNT(pts); i += 2) {
fPath.lineTo(pts[i], pts[i+1]);
}
for (i = 0; i < SK_ARRAY_COUNT(gPaintProcs); i++) {
fPaint[i].setAntiAlias(true);
fPaint[i].setColor(COLOR);
gPaintProcs[i](&fPaint[i]);
}
test_edgeclipper();
SkColorMatrix cm;
cm.setRotate(SkColorMatrix::kG_Axis, 180);
cm.setIdentity();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Effects");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
canvas->scale(3, 3);
canvas->translate(10, 30);
for (size_t i = 0; i < SK_ARRAY_COUNT(fPaint); i++) {
canvas->drawPath(fPath, fPaint[i]);
canvas->translate(32, 0);
}
}
private:
typedef SkView INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new EffectsView; }
static SkViewRegister reg(MyFactory);
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