blob: 7b402901596334b14056d4f87261c11495c039fa [file] [log] [blame]
/*
* 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/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/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_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);
SkFont font(ToolUtils::DefaultPortableTypeface(), r.height() / 2);
canvas->save();
canvas->clipRect(r);
SkTextUtils::DrawString(canvas, "Text", r.centerX(), r.centerY(), font, paint, SkTextUtils::kCenter_Align);
canvas->restore();
}
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));
canvas->save();
canvas->clipRect(r);
surf->draw(canvas, 0, 0, SkSamplingOptions(), &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(SkColorFilters::Blend(SK_ColorMAGENTA, SkBlendMode::kSrcIn));
sk_sp<SkImageFilter> cfif(SkImageFilters::ColorFilter(std::move(cf), nullptr));
SkIRect cropRect = SkIRect::MakeXYWH(10, 10, 44, 44);
SkIRect bogusRect = SkIRect::MakeXYWH(-100, -100, 10, 10);
sk_sp<SkImageFilter> filters[] = {
nullptr,
SkImageFilters::DropShadow(7.0f, 0.0f, 0.0f, 3.0f, SK_ColorBLUE, nullptr),
SkImageFilters::DropShadow(0.0f, 7.0f, 3.0f, 0.0f, SK_ColorBLUE, nullptr),
SkImageFilters::DropShadow(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, nullptr),
SkImageFilters::DropShadow(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, std::move(cfif)),
SkImageFilters::DropShadow(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, nullptr, &cropRect),
SkImageFilters::DropShadow(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, nullptr, &bogusRect),
SkImageFilters::DropShadowOnly(7.0f, 7.0f, 3.0f, 3.0f, SK_ColorBLUE, 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 < std::size(drawProc); ++j) {
canvas->save();
for (size_t i = 0; i < std::size(filters); ++i) {
drawProc[j](canvas, r, filters[i]);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
}