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/*
* Copyright 2013 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 "sk_tool_utils.h"
#include "SkColorFilter.h"
#include "SkColorFilterImageFilter.h"
#include "SkDropShadowImageFilter.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_ColorGREEN);
paint.setImageFilter(std::move(imf));
paint.setAntiAlias(true);
canvas->save();
canvas->clipRect(r);
canvas->drawCircle(r.centerX(), r.centerY(), r.width()/3, paint);
canvas->restore();
}
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->save();
canvas->clipRect(r);
canvas->drawString("Text", r.centerX(), r.centerY(), paint);
canvas->restore();
}
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->save();
canvas->clipRect(r);
canvas->drawBitmap(bm, 0, 0, &paint);
canvas->restore();
}
///////////////////////////////////////////////////////////////////////////////
DEF_SIMPLE_GM(dropshadowimagefilter, canvas, 400, 656) {
void (*drawProc[])(SkCanvas*, const SkRect&, sk_sp<SkImageFilter>) = {
draw_bitmap, draw_path, draw_paint, draw_text
};
sk_sp<SkColorFilter> cf(SkColorFilter::MakeModeFilter(SK_ColorMAGENTA,
SkBlendMode::kSrcIn));
sk_sp<SkImageFilter> cfif(SkColorFilterImageFilter::Make(std::move(cf), nullptr));
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> filters[] = {
nullptr,
SkDropShadowImageFilter::Make(7.0f, 0.0f, 0.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr),
SkDropShadowImageFilter::Make(0.0f, 7.0f, 3.0f, 0.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr),
SkDropShadowImageFilter::Make(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr),
SkDropShadowImageFilter::Make(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, std::move(cfif)),
SkDropShadowImageFilter::Make(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr, &cropRect),
SkDropShadowImageFilter::Make(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, nullptr, &bogusRect),
SkDropShadowImageFilter::Make(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode, nullptr),
};
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) {
drawProc[j](canvas, r, filters[i]);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
}
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