| |
| /* |
| * 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 "SampleCode.h" |
| #include "SkView.h" |
| #include "SkCanvas.h" |
| #include "SkGradientShader.h" |
| #include "SkPath.h" |
| #include "SkRegion.h" |
| #include "SkShader.h" |
| #include "SkUtils.h" |
| #include "SkImageDecoder.h" |
| |
| #ifdef SK_BUILD_FOR_WIN |
| // windows doesn't have roundf |
| inline float roundf(float x) { return (x-floor(x))>0.5 ? ceil(x) : floor(x); } |
| #endif |
| |
| #ifdef SK_DEBUG |
| static void make_rgn(SkRegion* rgn, int left, int top, int right, int bottom, |
| size_t count, int32_t runs[]) { |
| SkIRect r; |
| r.set(left, top, right, bottom); |
| |
| rgn->debugSetRuns(runs, count); |
| SkASSERT(rgn->getBounds() == r); |
| } |
| |
| static void test_union_bug_1505668(SkRegion* ra, SkRegion* rb, SkRegion* rc) { |
| static int32_t dataA[] = { |
| 0x00000001, 0x000001dd, |
| 0x00000001, 0x0000000c, 0x0000000d, 0x00000025, |
| 0x7fffffff, 0x000001de, 0x00000001, 0x00000025, |
| 0x7fffffff, 0x000004b3, 0x00000001, 0x00000026, |
| 0x7fffffff, 0x000004b4, 0x0000000c, 0x00000026, |
| 0x7fffffff, 0x00000579, 0x00000000, 0x0000013a, |
| 0x7fffffff, 0x000005d8, 0x00000000, 0x0000013b, |
| 0x7fffffff, 0x7fffffff |
| }; |
| make_rgn(ra, 0, 1, 315, 1496, SK_ARRAY_COUNT(dataA), dataA); |
| |
| static int32_t dataB[] = { |
| 0x000000b6, 0x000000c4, |
| 0x000000a1, 0x000000f0, 0x7fffffff, 0x000000d6, |
| 0x7fffffff, 0x000000e4, 0x00000070, 0x00000079, |
| 0x000000a1, 0x000000b0, 0x7fffffff, 0x000000e6, |
| 0x7fffffff, 0x000000f4, 0x00000070, 0x00000079, |
| 0x000000a1, 0x000000b0, 0x7fffffff, 0x000000f6, |
| 0x7fffffff, 0x00000104, 0x000000a1, 0x000000b0, |
| 0x7fffffff, 0x7fffffff |
| }; |
| make_rgn(rb, 112, 182, 240, 260, SK_ARRAY_COUNT(dataB), dataB); |
| |
| rc->op(*ra, *rb, SkRegion::kUnion_Op); |
| } |
| #endif |
| |
| static void scale_rect(SkIRect* dst, const SkIRect& src, float scale) { |
| dst->fLeft = (int)::roundf(src.fLeft * scale); |
| dst->fTop = (int)::roundf(src.fTop * scale); |
| dst->fRight = (int)::roundf(src.fRight * scale); |
| dst->fBottom = (int)::roundf(src.fBottom * scale); |
| } |
| |
| static void scale_rgn(SkRegion* dst, const SkRegion& src, float scale) { |
| SkRegion tmp; |
| SkRegion::Iterator iter(src); |
| |
| for (; !iter.done(); iter.next()) { |
| SkIRect r; |
| scale_rect(&r, iter.rect(), scale); |
| tmp.op(r, SkRegion::kUnion_Op); |
| } |
| dst->swap(tmp); |
| } |
| |
| static void paint_rgn(SkCanvas* canvas, const SkRegion& rgn, |
| const SkPaint& paint) { |
| SkRegion scaled; |
| scale_rgn(&scaled, rgn, 0.5f); |
| |
| SkRegion::Iterator iter(rgn); |
| |
| for (; !iter.done(); iter.next()) |
| { |
| SkRect r; |
| r.set(iter.rect()); |
| canvas->drawRect(r, paint); |
| } |
| } |
| |
| class RegionView : public SampleView { |
| public: |
| RegionView() { |
| fBase.set(100, 100, 150, 150); |
| fRect = fBase; |
| fRect.inset(5, 5); |
| fRect.offset(25, 25); |
| this->setBGColor(0xFFDDDDDD); |
| } |
| |
| void build_rgn(SkRegion* rgn, SkRegion::Op op) { |
| rgn->setRect(fBase); |
| SkIRect r = fBase; |
| r.offset(75, 20); |
| rgn->op(r, SkRegion::kUnion_Op); |
| rgn->op(fRect, op); |
| } |
| |
| |
| protected: |
| // overrides from SkEventSink |
| virtual bool onQuery(SkEvent* evt) { |
| if (SampleCode::TitleQ(*evt)) { |
| SampleCode::TitleR(evt, "Regions"); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void drawOrig(SkCanvas* canvas, bool bg) { |
| SkRect r; |
| SkPaint paint; |
| |
| paint.setStyle(SkPaint::kStroke_Style); |
| if (bg) |
| paint.setColor(0xFFBBBBBB); |
| |
| r.set(fBase); |
| canvas->drawRect(r, paint); |
| r.set(fRect); |
| canvas->drawRect(r, paint); |
| } |
| |
| void drawRgnOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) { |
| SkRegion rgn; |
| |
| this->build_rgn(&rgn, op); |
| |
| { |
| SkRegion tmp, tmp2(rgn); |
| |
| tmp = tmp2; |
| tmp.translate(5, -3); |
| |
| { |
| char buffer[1000]; |
| size_t size = tmp.flatten(NULL); |
| SkASSERT(size <= sizeof(buffer)); |
| size_t size2 = tmp.flatten(buffer); |
| SkASSERT(size == size2); |
| |
| SkRegion tmp3; |
| size2 = tmp3.unflatten(buffer); |
| SkASSERT(size == size2); |
| |
| SkASSERT(tmp3 == tmp); |
| } |
| |
| rgn.translate(20, 30, &tmp); |
| SkASSERT(rgn.isEmpty() || tmp != rgn); |
| tmp.translate(-20, -30); |
| SkASSERT(tmp == rgn); |
| } |
| |
| this->drawOrig(canvas, true); |
| |
| SkPaint paint; |
| paint.setColor((color & ~(0xFF << 24)) | (0x44 << 24)); |
| paint_rgn(canvas, rgn, paint); |
| |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setColor(color); |
| paint_rgn(canvas, rgn, paint); |
| } |
| |
| void drawPathOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) { |
| SkRegion rgn; |
| SkPath path; |
| |
| this->build_rgn(&rgn, op); |
| rgn.getBoundaryPath(&path); |
| |
| this->drawOrig(canvas, true); |
| |
| SkPaint paint; |
| |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setColor((color & ~(0xFF << 24)) | (0x44 << 24)); |
| canvas->drawPath(path, paint); |
| paint.setColor(color); |
| paint.setStyle(SkPaint::kStroke_Style); |
| canvas->drawPath(path, paint); |
| } |
| |
| virtual void onDrawContent(SkCanvas* canvas) { |
| #ifdef SK_DEBUG |
| if (true) { |
| SkRegion a, b, c; |
| test_union_bug_1505668(&a, &b, &c); |
| |
| if (false) { // draw the result of the test |
| SkPaint paint; |
| |
| canvas->translate(SkIntToScalar(10), SkIntToScalar(10)); |
| paint.setColor(SK_ColorRED); |
| paint_rgn(canvas, a, paint); |
| paint.setColor(0x800000FF); |
| paint_rgn(canvas, b, paint); |
| paint.setColor(SK_ColorBLACK); |
| paint.setStyle(SkPaint::kStroke_Style); |
| // paint_rgn(canvas, c, paint); |
| return; |
| } |
| } |
| #endif |
| |
| static const struct { |
| SkColor fColor; |
| const char* fName; |
| SkRegion::Op fOp; |
| } gOps[] = { |
| { SK_ColorBLACK, "Difference", SkRegion::kDifference_Op }, |
| { SK_ColorRED, "Intersect", SkRegion::kIntersect_Op }, |
| { 0xFF008800, "Union", SkRegion::kUnion_Op }, |
| { SK_ColorBLUE, "XOR", SkRegion::kXOR_Op } |
| }; |
| |
| SkPaint textPaint; |
| textPaint.setAntiAlias(true); |
| textPaint.setTextSize(SK_Scalar1*24); |
| |
| this->drawOrig(canvas, false); |
| canvas->save(); |
| canvas->translate(SkIntToScalar(200), 0); |
| this->drawRgnOped(canvas, SkRegion::kUnion_Op, SK_ColorBLACK); |
| canvas->restore(); |
| |
| canvas->translate(0, SkIntToScalar(200)); |
| |
| for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) { |
| canvas->drawText(gOps[op].fName, strlen(gOps[op].fName), SkIntToScalar(75), SkIntToScalar(50), textPaint); |
| |
| this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor); |
| |
| canvas->save(); |
| canvas->translate(0, SkIntToScalar(200)); |
| this->drawPathOped(canvas, gOps[op].fOp, gOps[op].fColor); |
| canvas->restore(); |
| |
| canvas->translate(SkIntToScalar(200), 0); |
| } |
| } |
| |
| virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) { |
| return fRect.contains(SkScalarRound(x), SkScalarRound(y)) ? new Click(this) : NULL; |
| } |
| |
| virtual bool onClick(Click* click) { |
| fRect.offset(click->fICurr.fX - click->fIPrev.fX, |
| click->fICurr.fY - click->fIPrev.fY); |
| this->inval(NULL); |
| return true; |
| } |
| |
| private: |
| SkIRect fBase, fRect; |
| |
| typedef SampleView INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static SkView* MyFactory() { return new RegionView; } |
| static SkViewRegister reg(MyFactory); |
| |
