1/*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "RecordTestUtils.h"
9#include "SkBitmap.h"
10#include "SkImageInfo.h"
11#include "SkRecord.h"
12#include "SkRecords.h"
13#include "SkShader.h"
14#include "Test.h"
15
16
17// Sums the area of any DrawRect command it sees.
18class AreaSummer {
19public:
20    AreaSummer() : fArea(0) {}
21
22    template <typename T> void operator()(const T&) { }
23
24    void operator()(const SkRecords::DrawRect& draw) {
25        fArea += (int)(draw.rect.width() * draw.rect.height());
26    }
27
28    int area() const { return fArea; }
29
30    void apply(const SkRecord& record) {
31        for (int i = 0; i < record.count(); i++) {
32            record.visit<void>(i, *this);
33        }
34    }
35
36private:
37    int fArea;
38};
39
40// Scales out the bottom-right corner of any DrawRect command it sees by 2x.
41struct Stretch {
42    template <typename T> void operator()(T*) {}
43    void operator()(SkRecords::DrawRect* draw) {
44        draw->rect.fRight *= 2;
45        draw->rect.fBottom *= 2;
46    }
47
48    void apply(SkRecord* record) {
49        for (int i = 0; i < record->count(); i++) {
50            record->mutate<void>(i, *this);
51        }
52    }
53};
54
55#define APPEND(record, type, ...) new (record.append<type>()) type{__VA_ARGS__}
56
57// Basic tests for the low-level SkRecord code.
58DEF_TEST(Record, r) {
59    SkRecord record;
60
61    // Add a simple DrawRect command.
62    SkRect rect = SkRect::MakeWH(10, 10);
63    SkPaint paint;
64    APPEND(record, SkRecords::DrawRect, paint, rect);
65
66    // Its area should be 100.
67    AreaSummer summer;
68    summer.apply(record);
69    REPORTER_ASSERT(r, summer.area() == 100);
70
71    // Scale 2x.
72    Stretch stretch;
73    stretch.apply(&record);
74
75    // Now its area should be 100 + 400.
76    summer.apply(record);
77    REPORTER_ASSERT(r, summer.area() == 500);
78}
79
80DEF_TEST(Record_defrag, r) {
81    SkRecord record;
82    APPEND(record, SkRecords::Save);
83    APPEND(record, SkRecords::ClipRect);
84    APPEND(record, SkRecords::NoOp);
85    APPEND(record, SkRecords::DrawRect);
86    APPEND(record, SkRecords::NoOp);
87    APPEND(record, SkRecords::NoOp);
88    APPEND(record, SkRecords::Restore);
89    REPORTER_ASSERT(r, record.count() == 7);
90
91    record.defrag();
92    REPORTER_ASSERT(r, record.count() == 4);
93    assert_type<SkRecords::Save    >(r, record, 0);
94    assert_type<SkRecords::ClipRect>(r, record, 1);
95    assert_type<SkRecords::DrawRect>(r, record, 2);
96    assert_type<SkRecords::Restore >(r, record, 3);
97}
98
99#undef APPEND
100
101template <typename T>
102static bool is_aligned(const T* p) {
103    return (((uintptr_t)p) & (sizeof(T) - 1)) == 0;
104}
105
106DEF_TEST(Record_Alignment, r) {
107    SkRecord record;
108    REPORTER_ASSERT(r, is_aligned(record.alloc<uint8_t>()));
109    REPORTER_ASSERT(r, is_aligned(record.alloc<uint16_t>()));
110    REPORTER_ASSERT(r, is_aligned(record.alloc<uint32_t>()));
111    REPORTER_ASSERT(r, is_aligned(record.alloc<void*>()));
112
113    // It's not clear if we care that 8-byte values are aligned on 32-bit machines.
114    if (sizeof(void*) == 8) {
115        REPORTER_ASSERT(r, is_aligned(record.alloc<double>()));
116        REPORTER_ASSERT(r, is_aligned(record.alloc<uint64_t>()));
117    }
118}
119
120