blob: 58207a7b1fa9da33451b9d53f0af3cf08b440505 [file] [log] [blame]
/*
* 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/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorFilter.h"
#include "include/core/SkFont.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkImageFilters.h"
#include "include/utils/SkTextUtils.h"
#include "tools/ToolUtils.h"
#include "tools/fonts/FontToolUtils.h"
#include <utility>
///////////////////////////////////////////////////////////////////////////////
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);
SkFont font(ToolUtils::DefaultPortableTypeface(), r.height() / 2);
SkTextUtils::DrawString(canvas, "Text", r.centerX(), r.centerY(), font, paint, SkTextUtils::kCenter_Align);
}
static void draw_bitmap(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
SkIRect bounds;
r.roundOut(&bounds);
auto surf = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(bounds.width(), bounds.height()));
draw_path(surf->getCanvas(), r, nullptr);
paint.setImageFilter(std::move(imf));
surf->draw(canvas, 0, 0, SkSamplingOptions(), &paint);
}
///////////////////////////////////////////////////////////////////////////////
class ImageFiltersCroppedGM : public skiagm::GM {
public:
ImageFiltersCroppedGM () {}
protected:
SkString getName() const override { return SkString("imagefilterscropped"); }
SkISize getISize() override { return SkISize::Make(400, 960); }
void make_checkerboard() {
auto surf = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(80, 80));
auto canvas = surf->getCanvas();
SkPaint darkPaint;
darkPaint.setColor(0xFF404040);
SkPaint lightPaint;
lightPaint.setColor(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();
}
}
fCheckerboard = surf->makeImageSnapshot();
}
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(SkColorFilters::Blend(SK_ColorBLUE,
SkBlendMode::kSrcIn));
SkIRect cropRect = SkIRect::MakeXYWH(10, 10, 44, 44);
SkIRect bogusRect = SkIRect::MakeXYWH(-100, -100, 10, 10);
sk_sp<SkImageFilter> offset(SkImageFilters::Offset(-10, -10, nullptr));
sk_sp<SkImageFilter> cfOffset(SkImageFilters::ColorFilter(cf, std::move(offset)));
// These are composed with an outer erode along the other axis, so don't add a cropRect to
// them or it will interfere with the second filter evaluation.
sk_sp<SkImageFilter> erodeX(SkImageFilters::Erode(8, 0, nullptr));
sk_sp<SkImageFilter> erodeY(SkImageFilters::Erode(0, 8, nullptr));
sk_sp<SkImageFilter> filters[] = {
nullptr,
SkImageFilters::ColorFilter(cf, nullptr, &cropRect),
SkImageFilters::Blur(0.0f, 0.0f, nullptr, &cropRect),
SkImageFilters::Blur(1.0f, 1.0f, nullptr, &cropRect),
SkImageFilters::Blur(8.0f, 0.0f, nullptr, &cropRect),
SkImageFilters::Blur(0.0f, 8.0f, nullptr, &cropRect),
SkImageFilters::Blur(8.0f, 8.0f, nullptr, &cropRect),
SkImageFilters::Erode(1, 1, nullptr, &cropRect),
SkImageFilters::Erode(8, 0, std::move(erodeY), &cropRect),
SkImageFilters::Erode(0, 8, std::move(erodeX), &cropRect),
SkImageFilters::Erode(8, 8, nullptr, &cropRect),
SkImageFilters::Merge(nullptr, std::move(cfOffset), &cropRect),
SkImageFilters::Blur(8.0f, 8.0f, nullptr, &bogusRect),
SkImageFilters::ColorFilter(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 < std::size(drawProc); ++j) {
canvas->save();
for (size_t i = 0; i < std::size(filters); ++i) {
SkPaint paint;
canvas->drawImage(fCheckerboard, 0, 0);
drawProc[j](canvas, r, filters[i]);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
}
private:
sk_sp<SkImage> fCheckerboard;
using INHERITED = GM;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new ImageFiltersCroppedGM; )