1#include "Test.h"
2#include "SkColor.h"
3#include "SkColorFilter.h"
4#include "SkRandom.h"
5#include "SkXfermode.h"
6
7static SkFlattenable* reincarnate_flattenable(SkFlattenable* obj) {
8    SkFlattenable::Factory fact = obj->getFactory();
9    if (NULL == fact) {
10        return NULL;
11    }
12
13    SkFlattenableWriteBuffer wb(1024);
14    obj->flatten(wb);
15
16    size_t size = wb.size();
17    SkAutoSMalloc<1024> storage(size);
18    // make a copy into storage
19    wb.flatten(storage.get());
20
21    SkFlattenableReadBuffer rb(storage.get(), size);
22    return fact(rb);
23}
24
25template <typename T> T* reincarnate(T* obj) {
26    return (T*)reincarnate_flattenable(obj);
27}
28
29///////////////////////////////////////////////////////////////////////////////
30
31#define ILLEGAL_MODE    ((SkXfermode::Mode)-1)
32
33static void test_asColorMode(skiatest::Reporter* reporter) {
34    SkRandom rand;
35
36    for (int mode = 0; mode <= SkXfermode::kLastMode; mode++) {
37        SkColor color = rand.nextU();
38
39        // ensure we always get a filter, by avoiding the possibility of a
40        // special case that would return NULL (if color's alpha is 0 or 0xFF)
41        color = SkColorSetA(color, 0x7F);
42
43        SkColorFilter* cf = SkColorFilter::CreateModeFilter(color,
44                                                        (SkXfermode::Mode)mode);
45
46        // allow for no filter if we're in Dst mode (its a no op)
47        if (SkXfermode::kDst_Mode == mode && NULL == cf) {
48            continue;
49        }
50
51        SkAutoUnref aur(cf);
52        REPORTER_ASSERT(reporter, cf);
53
54        SkColor c = ~color;
55        SkXfermode::Mode m = ILLEGAL_MODE;
56
57        SkColor expectedColor = color;
58        SkXfermode::Mode expectedMode = (SkXfermode::Mode)mode;
59
60//        SkDebugf("--- mc [%d %x] ", mode, color);
61
62        REPORTER_ASSERT(reporter, cf->asColorMode(&c, &m));
63        // handle special-case folding by the factory
64        if (SkXfermode::kClear_Mode == mode) {
65            if (c != expectedColor) {
66                expectedColor = 0;
67            }
68            if (m != expectedMode) {
69                expectedMode = SkXfermode::kSrc_Mode;
70            }
71        }
72
73//        SkDebugf("--- got [%d %x] expected [%d %x]\n", m, c, expectedMode, expectedColor);
74
75        REPORTER_ASSERT(reporter, c == expectedColor);
76        REPORTER_ASSERT(reporter, m == expectedMode);
77
78        {
79            SkColorFilter* cf2 = reincarnate(cf);
80            SkAutoUnref aur2(cf2);
81            REPORTER_ASSERT(reporter, cf2);
82
83            SkColor c2 = ~color;
84            SkXfermode::Mode m2 = ILLEGAL_MODE;
85            REPORTER_ASSERT(reporter, cf2->asColorMode(&c2, &m2));
86            REPORTER_ASSERT(reporter, c2 == expectedColor);
87            REPORTER_ASSERT(reporter, m2 == expectedMode);
88        }
89    }
90}
91
92#include "TestClassDef.h"
93DEFINE_TESTCLASS("ColorFilter", ColorFilterTestClass, test_asColorMode)
94