skia2/tests/XfermodeTest.cpp
commit-bot@chromium.org 0a2bf90dcc Factory methods for heap-allocated SkPathEffect and SkXfermode objects.
This is part of an effort to ensure that all SkPaint effects can only be
allocated on the heap.

This patch makes the constructors of SkPathEffect, SkXfermode and
their subclasses non-public and instead provides factory methods for
creating these objects on the heap. We temporarily keep the constructors
of the following classes public to not break Chrome/Blink:

SkXfermode
SkCornerPathEffect
SkDashPathEffect

BUG=skia:2187
R=scroggo@google.com, reed@google.com, mtklein@google.com, bungeman@google.com

Author: dominikg@chromium.org

Review URL: https://codereview.chromium.org/166583002

git-svn-id: http://skia.googlecode.com/svn/trunk@13519 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-02-20 20:40:19 +00:00

70 lines
2.2 KiB
C++

/*
* 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 "SkColor.h"
#include "SkXfermode.h"
#include "Test.h"
static SkPMColor bogusXfermodeProc(SkPMColor src, SkPMColor dst) {
return 42;
}
#define ILLEGAL_MODE ((SkXfermode::Mode)-1)
static void test_asMode(skiatest::Reporter* reporter) {
for (int mode = 0; mode <= SkXfermode::kLastMode; mode++) {
SkXfermode* xfer = SkXfermode::Create((SkXfermode::Mode) mode);
SkXfermode::Mode reportedMode = ILLEGAL_MODE;
REPORTER_ASSERT(reporter, reportedMode != mode);
// test IsMode
REPORTER_ASSERT(reporter, SkXfermode::AsMode(xfer, &reportedMode));
REPORTER_ASSERT(reporter, reportedMode == mode);
// repeat that test, but with asMode instead
if (xfer) {
reportedMode = (SkXfermode::Mode) -1;
REPORTER_ASSERT(reporter, xfer->asMode(&reportedMode));
REPORTER_ASSERT(reporter, reportedMode == mode);
xfer->unref();
} else {
REPORTER_ASSERT(reporter, SkXfermode::kSrcOver_Mode == mode);
}
}
SkXfermode* bogusXfer = SkProcXfermode::Create(bogusXfermodeProc);
SkXfermode::Mode reportedMode = ILLEGAL_MODE;
REPORTER_ASSERT(reporter, !bogusXfer->asMode(&reportedMode));
REPORTER_ASSERT(reporter, reportedMode == ILLEGAL_MODE);
REPORTER_ASSERT(reporter, !SkXfermode::AsMode(bogusXfer, &reportedMode));
REPORTER_ASSERT(reporter, reportedMode == ILLEGAL_MODE);
bogusXfer->unref();
}
static void test_IsMode(skiatest::Reporter* reporter) {
REPORTER_ASSERT(reporter, SkXfermode::IsMode(NULL,
SkXfermode::kSrcOver_Mode));
for (int i = 0; i <= SkXfermode::kLastMode; ++i) {
SkXfermode::Mode mode = (SkXfermode::Mode)i;
SkXfermode* xfer = SkXfermode::Create(mode);
REPORTER_ASSERT(reporter, SkXfermode::IsMode(xfer, mode));
SkSafeUnref(xfer);
if (SkXfermode::kSrcOver_Mode != mode) {
REPORTER_ASSERT(reporter, !SkXfermode::IsMode(NULL, mode));
}
}
}
DEF_TEST(Xfermode, reporter) {
test_asMode(reporter);
test_IsMode(reporter);
}