| /* |
| * 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(); ) |