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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 "Test.h"
#include "SkBitmap.h"
#include "SkImageInfo.h"
#include "SkShader.h"
#include "SkRecord.h"
#include "SkRecords.h"
// 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 (unsigned i = 0; i < record.count(); i++) {
record.visit<void>(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 (unsigned i = 0; i < record->count(); i++) {
record->mutate<void>(i, *this);
}
}
};
#define APPEND(record, type, ...) SkNEW_PLACEMENT_ARGS(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);
}
#undef APPEND
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