/* * 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 = SkSurface::MakeRasterN32Premul(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 < 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); } }