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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 "gm.h"
#include "SkCanvas.h"
#include "SkColorFilter.h"
#include "SkColorPriv.h"
#include "SkShader.h"
#include "SkBlurImageFilter.h"
#include "SkTestImageFilters.h"
class FailImageFilter : public SkImageFilter {
public:
FailImageFilter() {}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FailImageFilter)
protected:
virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
SkBitmap* result, SkIPoint* offset) {
return false;
}
FailImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
private:
typedef SkImageFilter INHERITED;
};
// register the filter with the flattenable registry
static SkFlattenable::Registrar gFailImageFilterReg("FailImageFilter",
FailImageFilter::CreateProc);
class IdentityImageFilter : public SkImageFilter {
public:
IdentityImageFilter() {}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(IdentityImageFilter)
protected:
virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
SkBitmap* result, SkIPoint* offset) {
*result = src;
return true;
}
IdentityImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
private:
typedef SkImageFilter INHERITED;
};
// register the filter with the flattenable registry
static SkFlattenable::Registrar gIdentityImageFilterReg("IdentityImageFilter",
IdentityImageFilter::CreateProc);
///////////////////////////////////////////////////////////////////////////////
static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(imf);
paint.setColor(SK_ColorGREEN);
canvas->save();
canvas->clipRect(r);
canvas->drawPaint(paint);
canvas->restore();
}
static void draw_line(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setColor(SK_ColorBLUE);
paint.setImageFilter(imf);
paint.setStrokeWidth(r.width()/10);
canvas->drawLine(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
}
static void draw_rect(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setColor(SK_ColorYELLOW);
paint.setImageFilter(imf);
SkRect rr(r);
rr.inset(r.width()/10, r.height()/10);
canvas->drawRect(rr, paint);
}
static void draw_path(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setColor(SK_ColorMAGENTA);
paint.setImageFilter(imf);
paint.setAntiAlias(true);
canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
}
static void draw_text(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(imf);
paint.setColor(SK_ColorCYAN);
paint.setAntiAlias(true);
paint.setTextSize(r.height()/2);
paint.setTextAlign(SkPaint::kCenter_Align);
canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint);
}
static void draw_bitmap(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(imf);
SkIRect bounds;
r.roundOut(&bounds);
SkBitmap bm;
bm.setConfig(SkBitmap::kARGB_8888_Config, bounds.width(), bounds.height());
bm.allocPixels();
bm.eraseColor(0);
SkCanvas c(bm);
draw_path(&c, r, NULL);
canvas->drawBitmap(bm, 0, 0, &paint);
}
static void draw_sprite(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(imf);
SkIRect bounds;
r.roundOut(&bounds);
SkBitmap bm;
bm.setConfig(SkBitmap::kARGB_8888_Config, bounds.width(), bounds.height());
bm.allocPixels();
bm.eraseColor(0);
SkCanvas c(bm);
draw_path(&c, r, NULL);
SkPoint loc = { r.fLeft, r.fTop };
canvas->getTotalMatrix().mapPoints(&loc, 1);
canvas->drawSprite(bm,
SkScalarRoundToInt(loc.fX), SkScalarRoundToInt(loc.fY),
&paint);
}
///////////////////////////////////////////////////////////////////////////////
class ImageFiltersBaseGM : public skiagm::GM {
public:
ImageFiltersBaseGM () {}
protected:
virtual SkString onShortName() {
return SkString("imagefiltersbase");
}
virtual SkISize onISize() { return SkISize::Make(700, 460); }
void draw_frame(SkCanvas* canvas, const SkRect& r) {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(SK_ColorRED);
canvas->drawRect(r, paint);
}
virtual void onDraw(SkCanvas* canvas) {
void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = {
draw_paint,
draw_line, draw_rect, draw_path, draw_text,
draw_bitmap,
draw_sprite
};
SkColorFilter* cf = SkColorFilter::CreateModeFilter(SK_ColorRED,
SkXfermode::kSrcIn_Mode);
SkImageFilter* filters[] = {
#if 1
NULL,
new IdentityImageFilter,
new FailImageFilter,
new SkColorFilterImageFilter(cf),
#endif
new SkBlurImageFilter(12.0f, 0.0f),
};
cf->unref();
SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
SkScalar MARGIN = SkIntToScalar(16);
SkScalar DX = r.width() + MARGIN;
SkScalar DY = r.height() + MARGIN;
canvas->translate(MARGIN, MARGIN);
for (size_t i = 0; i < SK_ARRAY_COUNT(drawProc); ++i) {
canvas->save();
for (size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
drawProc[i](canvas, r, filters[j]);
draw_frame(canvas, r);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
}
private:
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static skiagm::GM* MyFactory(void*) { return new ImageFiltersBaseGM; }
static skiagm::GMRegistry reg(MyFactory);
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