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- /*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkCanvas.h"
- #include "include/core/SkPath.h"
- #include "samplecode/Sample.h"
- #include "src/core/SkAAClip.h"
- static void testop(const SkIRect& r0, const SkIRect& r1, SkRegion::Op op,
- const SkIRect& expectedR) {
- SkAAClip c0, c1, c2;
- c0.setRect(r0);
- c1.setRect(r1);
- c2.op(c0, c1, op);
- SkDEBUGCODE(SkIRect r2 = c2.getBounds());
- SkASSERT(r2 == expectedR);
- }
- static const struct {
- SkIRect r0;
- SkIRect r1;
- SkRegion::Op op;
- SkIRect expectedR;
- } gRec[] = {
- {{ 1, 2, 9, 3 }, { -3, 2, 5, 11 }, SkRegion::kDifference_Op, { 5, 2, 9, 3 }},
- {{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kDifference_Op, { 1, 11, 5, 13 }},
- {{ 1, 10, 5, 13 }, { 1, 2, 5, 11 }, SkRegion::kReverseDifference_Op, { 1, 2, 5, 10 }},
- };
- static void testop() {
- for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
- testop(gRec[i].r0, gRec[i].r1, gRec[i].op, gRec[i].expectedR);
- }
- }
- static void drawClip(SkCanvas* canvas, const SkAAClip& clip) {
- SkMask mask;
- SkBitmap bm;
- clip.copyToMask(&mask);
- SkAutoMaskFreeImage amfi(mask.fImage);
- bm.installMaskPixels(mask);
- SkPaint paint;
- canvas->drawBitmap(bm,
- SK_Scalar1 * mask.fBounds.fLeft,
- SK_Scalar1 * mask.fBounds.fTop,
- &paint);
- }
- class AAClipView : public Sample {
- SkString name() override { return SkString("AAClip"); }
- void onOnceBeforeDraw() override { testop(); }
- void onDrawContent(SkCanvas* canvas) override {
- #if 1
- SkAAClip aaclip;
- SkPath path;
- SkRect bounds;
- bounds.set(0, 0, 20, 20);
- bounds.inset(SK_ScalarHalf, SK_ScalarHalf);
- // path.addRect(bounds);
- // path.addOval(bounds);
- path.addRoundRect(bounds, 4, 4);
- aaclip.setPath(path);
- canvas->translate(30, 30);
- drawClip(canvas, aaclip);
- SkAAClip aaclip2;
- path.offset(10, 10);
- aaclip2.setPath(path);
- canvas->translate(30, 0);
- drawClip(canvas, aaclip2);
- SkAAClip aaclip3;
- aaclip3.op(aaclip, aaclip2, SkRegion::kIntersect_Op);
- canvas->translate(30, 0);
- drawClip(canvas, aaclip3);
- #endif
- #if 0
- SkRect r;
- r.set(0, 0, this->width(), this->height());
- r.inset(20, 20);
- canvas->clipRect(r);
- SkPath path;
- path.addRect(r);
- SkPaint paint;
- paint.setAntiAlias(true);
- paint.setColor(SK_ColorRED);
- canvas->drawPath(path, paint);
- #endif
- }
- };
- DEF_SAMPLE( return new AAClipView(); )
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