449d9b7e2d
- use C++11 features ({} init, move constructors) to eliminate the need
for explicit constructors
- collapse RECORD0...RECORD8 into just one RECORD macro
- explicitly tag record types instead of using member detectors.
Removing member detectors makes this code significantly less fragile.
This exposes a few places where we didn't really think through what to do
with SkDrawable. I've marked them TODO for now.
BUG=skia:
Review URL: https://codereview.chromium.org/1360943003
100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Test.h"
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#include "SkBitmap.h"
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#include "SkImageInfo.h"
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#include "SkShader.h"
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#include "SkRecord.h"
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#include "SkRecords.h"
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// Sums the area of any DrawRect command it sees.
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class AreaSummer {
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public:
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AreaSummer() : fArea(0) {}
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template <typename T> void operator()(const T&) { }
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void operator()(const SkRecords::DrawRect& draw) {
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fArea += (int)(draw.rect.width() * draw.rect.height());
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}
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int area() const { return fArea; }
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void apply(const SkRecord& record) {
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for (int i = 0; i < record.count(); i++) {
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record.visit<void>(i, *this);
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}
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}
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private:
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int fArea;
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};
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// Scales out the bottom-right corner of any DrawRect command it sees by 2x.
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struct Stretch {
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template <typename T> void operator()(T*) {}
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void operator()(SkRecords::DrawRect* draw) {
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draw->rect.fRight *= 2;
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draw->rect.fBottom *= 2;
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}
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void apply(SkRecord* record) {
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for (int i = 0; i < record->count(); i++) {
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record->mutate<void>(i, *this);
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}
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}
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};
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#define APPEND(record, type, ...) new (record.append<type>()) type{__VA_ARGS__}
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// Basic tests for the low-level SkRecord code.
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DEF_TEST(Record, r) {
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SkRecord record;
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// Add a simple DrawRect command.
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SkRect rect = SkRect::MakeWH(10, 10);
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SkPaint paint;
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APPEND(record, SkRecords::DrawRect, paint, rect);
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// Its area should be 100.
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AreaSummer summer;
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summer.apply(record);
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REPORTER_ASSERT(r, summer.area() == 100);
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// Scale 2x.
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Stretch stretch;
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stretch.apply(&record);
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// Now its area should be 100 + 400.
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summer.apply(record);
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REPORTER_ASSERT(r, summer.area() == 500);
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}
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#undef APPEND
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template <typename T>
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static bool is_aligned(const T* p) {
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return (((uintptr_t)p) & (sizeof(T) - 1)) == 0;
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}
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DEF_TEST(Record_Alignment, r) {
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SkRecord record;
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REPORTER_ASSERT(r, is_aligned(record.alloc<uint8_t>()));
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REPORTER_ASSERT(r, is_aligned(record.alloc<uint16_t>()));
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REPORTER_ASSERT(r, is_aligned(record.alloc<uint32_t>()));
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REPORTER_ASSERT(r, is_aligned(record.alloc<void*>()));
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// It's not clear if we care that 8-byte values are aligned on 32-bit machines.
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if (sizeof(void*) == 8) {
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REPORTER_ASSERT(r, is_aligned(record.alloc<double>()));
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REPORTER_ASSERT(r, is_aligned(record.alloc<uint64_t>()));
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}
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}
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