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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 "Test.h"
#include "SkClipStack.h"
#include "SkPath.h"
#include "SkRect.h"
static void test_assign_and_comparison(skiatest::Reporter* reporter) {
SkClipStack s;
bool doAA = false;
// Build up a clip stack with a path, an empty clip, and a rect.
s.save();
SkPath p;
p.moveTo(5, 6);
p.lineTo(7, 8);
p.lineTo(5, 9);
p.close();
s.clipDevPath(p, SkRegion::kIntersect_Op, doAA);
s.save();
SkRect r = SkRect::MakeLTRB(1, 2, 3, 4);
s.clipDevRect(r, SkRegion::kIntersect_Op, doAA);
r = SkRect::MakeLTRB(10, 11, 12, 13);
s.clipDevRect(r, SkRegion::kIntersect_Op, doAA);
s.save();
r = SkRect::MakeLTRB(14, 15, 16, 17);
s.clipDevRect(r, SkRegion::kUnion_Op, doAA);
// Test that assignment works.
SkClipStack copy = s;
REPORTER_ASSERT(reporter, s == copy);
// Test that different save levels triggers not equal.
s.restore();
REPORTER_ASSERT(reporter, s != copy);
// Test that an equal, but not copied version is equal.
s.save();
r = SkRect::MakeLTRB(14, 15, 16, 17);
s.clipDevRect(r, SkRegion::kUnion_Op, doAA);
REPORTER_ASSERT(reporter, s == copy);
// Test that a different op on one level triggers not equal.
s.restore();
s.save();
r = SkRect::MakeLTRB(14, 15, 16, 17);
s.clipDevRect(r, SkRegion::kIntersect_Op, doAA);
REPORTER_ASSERT(reporter, s != copy);
// Test that different state (clip type) triggers not equal.
// NO LONGER VALID: if a path contains only a rect, we turn
// it into a bare rect for performance reasons (working
// around Chromium/JavaScript bad pattern).
/*
s.restore();
s.save();
SkPath rp;
rp.addRect(r);
s.clipDevPath(rp, SkRegion::kUnion_Op, doAA);
REPORTER_ASSERT(reporter, s != copy);
*/
// Test that different rects triggers not equal.
s.restore();
s.save();
r = SkRect::MakeLTRB(24, 25, 26, 27);
s.clipDevRect(r, SkRegion::kUnion_Op, doAA);
REPORTER_ASSERT(reporter, s != copy);
// Sanity check
s.restore();
copy.restore();
REPORTER_ASSERT(reporter, s == copy);
s.restore();
copy.restore();
REPORTER_ASSERT(reporter, s == copy);
// Test that different paths triggers not equal.
s.restore();
s.save();
p.addRect(r);
s.clipDevPath(p, SkRegion::kIntersect_Op, doAA);
REPORTER_ASSERT(reporter, s != copy);
}
static void assert_count(skiatest::Reporter* reporter, const SkClipStack& stack,
int count) {
REPORTER_ASSERT(reporter, count == stack.getSaveCount());
SkClipStack::B2FIter iter(stack);
int counter = 0;
while (iter.next()) {
counter += 1;
}
REPORTER_ASSERT(reporter, count == counter);
}
static void TestClipStack(skiatest::Reporter* reporter) {
SkClipStack stack;
assert_count(reporter, stack, 0);
static const SkIRect gRects[] = {
{ 0, 0, 100, 100 },
{ 25, 25, 125, 125 },
{ 0, 0, 1000, 1000 },
{ 0, 0, 75, 75 }
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gRects); i++) {
stack.clipDevRect(gRects[i], SkRegion::kIntersect_Op);
}
// all of the above rects should have been intersected, leaving only 1 rect
SkClipStack::B2FIter iter(stack);
const SkClipStack::B2FIter::Clip* clip = iter.next();
SkRect answer;
answer.iset(25, 25, 75, 75);
REPORTER_ASSERT(reporter, clip);
REPORTER_ASSERT(reporter, clip->fRect);
REPORTER_ASSERT(reporter, !clip->fPath);
REPORTER_ASSERT(reporter, SkRegion::kIntersect_Op == clip->fOp);
REPORTER_ASSERT(reporter, *clip->fRect == answer);
// now check that we only had one in our iterator
REPORTER_ASSERT(reporter, !iter.next());
stack.reset();
assert_count(reporter, stack, 0);
test_assign_and_comparison(reporter);
}
#include "TestClassDef.h"
DEFINE_TESTCLASS("ClipStack", TestClipStackClass, TestClipStack)
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