| /* |
| * 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 <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::create_portable_typeface(), 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); |
| } |
| } |