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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "RecordTestUtils.h"
#include "SkBitmap.h"
#include "SkImageInfo.h"
#include "SkRecord.h"
#include "SkRecords.h"
#include "SkShader.h"
#include "Test.h"
#include <new>
// Sums the area of any DrawRect command it sees.
class AreaSummer {
public:
AreaSummer() : fArea(0) {}
template <typename T> void operator()(const T&) { }
void operator()(const SkRecords::DrawRect& draw) {
fArea += (int)(draw.rect.width() * draw.rect.height());
}
int area() const { return fArea; }
void apply(const SkRecord& record) {
for (int i = 0; i < record.count(); i++) {
record.visit(i, *this);
}
}
private:
int fArea;
};
// Scales out the bottom-right corner of any DrawRect command it sees by 2x.
struct Stretch {
template <typename T> void operator()(T*) {}
void operator()(SkRecords::DrawRect* draw) {
draw->rect.fRight *= 2;
draw->rect.fBottom *= 2;
}
void apply(SkRecord* record) {
for (int i = 0; i < record->count(); i++) {
record->mutate(i, *this);
}
}
};
#define APPEND(record, type, ...) new (record.append<type>()) type{__VA_ARGS__}
// Basic tests for the low-level SkRecord code.
DEF_TEST(Record, r) {
SkRecord record;
// Add a simple DrawRect command.
SkRect rect = SkRect::MakeWH(10, 10);
SkPaint paint;
APPEND(record, SkRecords::DrawRect, paint, rect);
// Its area should be 100.
AreaSummer summer;
summer.apply(record);
REPORTER_ASSERT(r, summer.area() == 100);
// Scale 2x.
Stretch stretch;
stretch.apply(&record);
// Now its area should be 100 + 400.
summer.apply(record);
REPORTER_ASSERT(r, summer.area() == 500);
}
DEF_TEST(Record_defrag, r) {
SkRecord record;
APPEND(record, SkRecords::Save);
APPEND(record, SkRecords::ClipRect);
APPEND(record, SkRecords::NoOp);
APPEND(record, SkRecords::DrawRect);
APPEND(record, SkRecords::NoOp);
APPEND(record, SkRecords::NoOp);
APPEND(record, SkRecords::Restore);
REPORTER_ASSERT(r, record.count() == 7);
record.defrag();
REPORTER_ASSERT(r, record.count() == 4);
assert_type<SkRecords::Save >(r, record, 0);
assert_type<SkRecords::ClipRect>(r, record, 1);
assert_type<SkRecords::DrawRect>(r, record, 2);
assert_type<SkRecords::Restore >(r, record, 3);
}
#undef APPEND
template <typename T>
static bool is_aligned(const T* p) {
return (((uintptr_t)p) & (sizeof(T) - 1)) == 0;
}
DEF_TEST(Record_Alignment, r) {
SkRecord record;
REPORTER_ASSERT(r, is_aligned(record.alloc<uint8_t>()));
REPORTER_ASSERT(r, is_aligned(record.alloc<uint16_t>()));
REPORTER_ASSERT(r, is_aligned(record.alloc<uint32_t>()));
REPORTER_ASSERT(r, is_aligned(record.alloc<void*>()));
// It's not clear if we care that 8-byte values are aligned on 32-bit machines.
if (sizeof(void*) == 8) {
REPORTER_ASSERT(r, is_aligned(record.alloc<double>()));
REPORTER_ASSERT(r, is_aligned(record.alloc<uint64_t>()));
}
}
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