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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 "SkMorphologyImageFilter.h"
#include "SkColorFilterImageFilter.h"
#include "SkMergeImageFilter.h"
#include "SkOffsetImageFilter.h"
///////////////////////////////////////////////////////////////////////////////
static void draw_paint(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setImageFilter(std::move(imf));
paint.setColor(SK_ColorBLACK);
canvas->save();
canvas->clipRect(r);
canvas->drawPaint(paint);
canvas->restore();
}
static void draw_path(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setColor(SK_ColorMAGENTA);
paint.setImageFilter(std::move(imf));
paint.setAntiAlias(true);
canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
}
static void draw_text(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setImageFilter(std::move(imf));
paint.setColor(SK_ColorGREEN);
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
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, sk_sp<SkImageFilter> imf) {
SkPaint paint;
SkIRect bounds;
r.roundOut(&bounds);
SkBitmap bm;
bm.allocN32Pixels(bounds.width(), bounds.height());
bm.eraseColor(SK_ColorTRANSPARENT);
SkCanvas c(bm);
draw_path(&c, r, nullptr);
paint.setImageFilter(std::move(imf));
canvas->drawBitmap(bm, 0, 0, &paint);
}
///////////////////////////////////////////////////////////////////////////////
class ImageFiltersCroppedGM : public skiagm::GM {
public:
ImageFiltersCroppedGM () {}
protected:
SkString onShortName() override {
return SkString("imagefilterscropped");
}
SkISize onISize() override { return SkISize::Make(400, 960); }
void make_checkerboard() {
fCheckerboard.allocN32Pixels(80, 80);
SkCanvas canvas(fCheckerboard);
canvas.clear(SK_ColorTRANSPARENT);
SkPaint darkPaint;
darkPaint.setColor(sk_tool_utils::color_to_565(0xFF404040));
SkPaint lightPaint;
lightPaint.setColor(sk_tool_utils::color_to_565(0xFFA0A0A0));
for (int y = 0; y < 80; y += 16) {
for (int x = 0; x < 80; x += 16) {
canvas.save();
canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
canvas.restore();
}
}
}
void draw_frame(SkCanvas* canvas, const SkRect& r) {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(SK_ColorRED);
canvas->drawRect(r, paint);
}
void onOnceBeforeDraw() override{
make_checkerboard();
}
void onDraw(SkCanvas* canvas) override {
void (*drawProc[])(SkCanvas*, const SkRect&, sk_sp<SkImageFilter>) = {
draw_bitmap, draw_path, draw_paint, draw_text
};
sk_sp<SkColorFilter> cf(SkColorFilter::MakeModeFilter(SK_ColorBLUE,
SkBlendMode::kSrcIn));
SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)),
SkImageFilter::CropRect::kHasAll_CropEdge);
SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)),
SkImageFilter::CropRect::kHasAll_CropEdge);
sk_sp<SkImageFilter> offset(SkOffsetImageFilter::Make(SkIntToScalar(-10),
SkIntToScalar(-10),
nullptr));
sk_sp<SkImageFilter> cfOffset(SkColorFilterImageFilter::Make(cf, std::move(offset)));
sk_sp<SkImageFilter> erodeX(SkErodeImageFilter::Make(8, 0, nullptr, &cropRect));
sk_sp<SkImageFilter> erodeY(SkErodeImageFilter::Make(0, 8, nullptr, &cropRect));
sk_sp<SkImageFilter> filters[] = {
nullptr,
SkColorFilterImageFilter::Make(cf, nullptr, &cropRect),
SkBlurImageFilter::Make(0.0f, 0.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(1.0f, 1.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(8.0f, 0.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(0.0f, 8.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(8.0f, 8.0f, nullptr, &cropRect),
SkErodeImageFilter::Make(1, 1, nullptr, &cropRect),
SkErodeImageFilter::Make(8, 0, std::move(erodeY), &cropRect),
SkErodeImageFilter::Make(0, 8, std::move(erodeX), &cropRect),
SkErodeImageFilter::Make(8, 8, nullptr, &cropRect),
SkMergeImageFilter::Make(nullptr,
std::move(cfOffset),
SkBlendMode::kSrcOver,
&cropRect),
SkBlurImageFilter::Make(8.0f, 8.0f, nullptr, &bogusRect),
SkColorFilterImageFilter::Make(cf, nullptr, &bogusRect),
};
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 j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) {
canvas->save();
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkPaint paint;
canvas->drawBitmap(fCheckerboard, 0, 0);
drawProc[j](canvas, r, filters[i]);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
}
private:
SkBitmap fCheckerboard;
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new ImageFiltersCroppedGM; )
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