113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "sk_tool_utils.h"
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#include "SkBlurImageFilter.h"
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#include "SkColor.h"
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#include "SkDropShadowImageFilter.h"
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#include "SkOffsetImageFilter.h"
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#include "SkScalar.h"
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#include "gm.h"
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#define RESIZE_FACTOR_X SkIntToScalar(2)
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#define RESIZE_FACTOR_Y SkIntToScalar(5)
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namespace skiagm {
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class ImageFiltersStrokedGM : public GM {
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public:
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ImageFiltersStrokedGM() {
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this->setBGColor(0x00000000);
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}
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protected:
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SkString onShortName() override {
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return SkString("imagefiltersstroked");
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}
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SkISize onISize() override {
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return SkISize::Make(860, 500);
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}
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static void draw_circle(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
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canvas->drawCircle(r.centerX(), r.centerY(),
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r.width() * 2 / 5, paint);
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}
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static void draw_line(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
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canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, paint);
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}
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static void draw_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) {
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canvas->drawRect(r, paint);
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}
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void onDraw(SkCanvas* canvas) override {
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void (*drawProc[])(SkCanvas*, const SkRect&, const SkPaint&) = {
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draw_line, draw_rect, draw_circle,
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};
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canvas->clear(SK_ColorBLACK);
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SkMatrix resizeMatrix;
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resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y);
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SkImageFilter* filters[] = {
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SkBlurImageFilter::Create(5, 5),
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SkDropShadowImageFilter::Create(10, 10, 3, 3, SK_ColorGREEN,
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SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
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SkOffsetImageFilter::Create(-16, 32),
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SkImageFilter::CreateMatrixFilter(resizeMatrix, kNone_SkFilterQuality),
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};
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SkRect r = SkRect::MakeWH(64, 64);
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SkScalar margin = 32;
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SkPaint paint;
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paint.setColor(SK_ColorWHITE);
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paint.setAntiAlias(true);
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paint.setStrokeWidth(10);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setTextSize(48);
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paint.setTextAlign(SkPaint::kCenter_Align);
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for (size_t i = 0; i < SK_ARRAY_COUNT(drawProc); ++i) {
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canvas->translate(0, margin);
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canvas->save();
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for (size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
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canvas->translate(margin, 0);
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canvas->save();
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if (2 == j) {
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canvas->translate(16, -32);
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} else if (3 == j) {
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canvas->scale(SkScalarInvert(RESIZE_FACTOR_X),
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SkScalarInvert(RESIZE_FACTOR_Y));
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}
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paint.setImageFilter(filters[j]);
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drawProc[i](canvas, r, paint);
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canvas->restore();
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canvas->translate(r.width() + margin, 0);
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}
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canvas->restore();
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canvas->translate(0, r.height());
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}
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for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
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SkSafeUnref(filters[i]);
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}
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new ImageFiltersStrokedGM;)
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}
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