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138 lines
4.2 KiB
138 lines
4.2 KiB
/*
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* Copyright 2013 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 "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkPathEffect.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkTypes.h"
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#include "include/effects/SkDashPathEffect.h"
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#include <utility>
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static SkPath generate_square(SkScalar cx, SkScalar cy, SkScalar w) {
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return SkPath::Rect(SkRect::MakeXYWH(cx - w / 2, cy - w / 2, w, w));
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}
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static SkPath generate_rect_line(SkScalar cx, SkScalar cy, SkScalar l) {
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return SkPath::Rect(SkRect::MakeXYWH(cx - l / 2, cy, l, 0));
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}
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static SkPath generate_circle(SkScalar cx, SkScalar cy, SkScalar d) {
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return SkPath::Circle(cx, cy, d/2, SkPathDirection::kCW);
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}
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static SkPath generate_line(SkScalar cx, SkScalar cy, SkScalar l) {
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return SkPath::Line({cx - l / 2, cy}, {cx + l / 2, cy});
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}
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namespace {
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struct Style {
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Style(SkPaint::Style paintStyle, sk_sp<SkPathEffect> pe = sk_sp<SkPathEffect>())
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: fPaintStyle(paintStyle)
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, fPathEffect(std::move(pe)) {}
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SkPaint::Style fPaintStyle;
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sk_sp<SkPathEffect> fPathEffect;
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};
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sk_sp<SkPathEffect> make_dash() {
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constexpr SkScalar kIntervals[] = { 4.f, 3.f };
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return SkDashPathEffect::Make(kIntervals, SK_ARRAY_COUNT(kIntervals), 0);
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}
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Style styles[] {
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{SkPaint::kStroke_Style},
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{SkPaint::kStrokeAndFill_Style},
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{SkPaint::kFill_Style},
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{SkPaint::kStroke_Style, make_dash()},
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};
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SkScalar pathSizes[] = {
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40,
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10,
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0
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};
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SkScalar strokeWidths[] = {
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10,
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0
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};
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SkPath (*paths[])(SkScalar, SkScalar, SkScalar) = {
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generate_square,
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generate_rect_line,
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generate_circle,
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generate_line
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};
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const SkScalar slideWidth = 90, slideHeight = 90;
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const SkScalar slideBoundary = 5;
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} // namespace
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DEF_SIMPLE_GM(inverse_paths, canvas, 800, 1200) {
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SkScalar cx = slideWidth / 2 + slideBoundary;
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SkScalar cy = slideHeight / 2 + slideBoundary;
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SkScalar dx = slideWidth + 2 * slideBoundary;
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SkScalar dy = slideHeight + 2 * slideBoundary;
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SkRect clipRect = SkRect::MakeLTRB(slideBoundary, slideBoundary,
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slideBoundary + slideWidth,
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slideBoundary + slideHeight);
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SkPaint clipPaint;
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clipPaint.setStyle(SkPaint::kStroke_Style);
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clipPaint.setStrokeWidth(SkIntToScalar(2));
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SkPaint outlinePaint;
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outlinePaint.setColor(0x40000000);
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outlinePaint.setStyle(SkPaint::kStroke_Style);
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outlinePaint.setStrokeWidth(SkIntToScalar(0));
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for (size_t styleIndex = 0; styleIndex < SK_ARRAY_COUNT(styles);
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styleIndex++) {
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for (size_t sizeIndex = 0; sizeIndex < SK_ARRAY_COUNT(pathSizes);
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sizeIndex++) {
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SkScalar size = pathSizes[sizeIndex];
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canvas->save();
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for (size_t widthIndex = 0;
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widthIndex < SK_ARRAY_COUNT(strokeWidths);
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widthIndex++) {
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SkPaint paint;
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paint.setColor(0xff007000);
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paint.setStrokeWidth(strokeWidths[widthIndex]);
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paint.setStyle(styles[styleIndex].fPaintStyle);
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paint.setPathEffect(styles[styleIndex].fPathEffect);
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for (size_t pathIndex = 0;
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pathIndex < SK_ARRAY_COUNT(paths);
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pathIndex++) {
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canvas->drawRect(clipRect, clipPaint);
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canvas->save();
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canvas->clipRect(clipRect);
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SkPath path = paths[pathIndex](cx, cy, size);
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path.setFillType(SkPathFillType::kInverseWinding);
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canvas->drawPath(path, paint);
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path.setFillType(SkPathFillType::kWinding);
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canvas->drawPath(path, outlinePaint);
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canvas->restore();
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canvas->translate(dx, 0);
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}
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}
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canvas->restore();
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canvas->translate(0, dy);
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}
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}
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}
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