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- /*
- * Copyright 2015 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/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkImageFilter.h"
- #include "include/core/SkMatrix.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/SkTypes.h"
- #include "include/effects/SkBlurImageFilter.h"
- #include "include/effects/SkDropShadowImageFilter.h"
- #include "include/effects/SkOffsetImageFilter.h"
- #define RESIZE_FACTOR_X SkIntToScalar(2)
- #define RESIZE_FACTOR_Y SkIntToScalar(5)
- namespace skiagm {
- class ImageFiltersStrokedGM : public GM {
- public:
- ImageFiltersStrokedGM() {
- this->setBGColor(0x00000000);
- }
- protected:
- SkString onShortName() override {
- return SkString("imagefiltersstroked");
- }
- SkISize onISize() override {
- return SkISize::Make(860, 500);
- }
- static void draw_circle(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
- canvas->drawCircle(r.centerX(), r.centerY(),
- r.width() * 2 / 5, paint);
- }
- static void draw_line(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
- canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, paint);
- }
- static void draw_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
- canvas->drawRect(r, paint);
- }
- void onDraw(SkCanvas* canvas) override {
- void (*drawProc[])(SkCanvas*, const SkRect&, const SkPaint&) = {
- draw_line, draw_rect, draw_circle,
- };
- canvas->clear(SK_ColorBLACK);
- SkMatrix resizeMatrix;
- resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y);
- sk_sp<SkImageFilter> filters[] = {
- SkBlurImageFilter::Make(5, 5, nullptr),
- SkDropShadowImageFilter::Make(10, 10, 3, 3, SK_ColorGREEN,
- SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
- nullptr),
- SkOffsetImageFilter::Make(-16, 32, nullptr),
- SkImageFilter::MakeMatrixFilter(resizeMatrix, kNone_SkFilterQuality, nullptr),
- };
- SkRect r = SkRect::MakeWH(64, 64);
- SkScalar margin = 32;
- SkPaint paint;
- paint.setColor(SK_ColorWHITE);
- paint.setAntiAlias(true);
- paint.setStrokeWidth(10);
- paint.setStyle(SkPaint::kStroke_Style);
- for (size_t i = 0; i < SK_ARRAY_COUNT(drawProc); ++i) {
- canvas->translate(0, margin);
- canvas->save();
- for (size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
- canvas->translate(margin, 0);
- canvas->save();
- if (2 == j) {
- canvas->translate(16, -32);
- } else if (3 == j) {
- canvas->scale(SkScalarInvert(RESIZE_FACTOR_X),
- SkScalarInvert(RESIZE_FACTOR_Y));
- }
- paint.setImageFilter(filters[j]);
- drawProc[i](canvas, r, paint);
- canvas->restore();
- canvas->translate(r.width() + margin, 0);
- }
- canvas->restore();
- canvas->translate(0, r.height());
- }
- }
- private:
- typedef GM INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_GM(return new ImageFiltersStrokedGM;)
- }
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