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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/test/fake_picture_pile_impl.h"
#include <algorithm>
#include <limits>
#include <utility>
#include "base/synchronization/waitable_event.h"
#include "cc/resources/picture_pile.h"
#include "cc/test/fake_picture_pile.h"
#include "cc/test/impl_side_painting_settings.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
FakePicturePileImpl::FakePicturePileImpl() : playback_allowed_event_(nullptr) {
}
FakePicturePileImpl::FakePicturePileImpl(
const PicturePile* other,
base::WaitableEvent* playback_allowed_event)
: PicturePileImpl(other),
playback_allowed_event_(playback_allowed_event),
tile_grid_size_(other->GetTileGridSizeForTesting()) {
}
FakePicturePileImpl::~FakePicturePileImpl() {}
scoped_refptr<FakePicturePileImpl> FakePicturePileImpl::CreateFilledPile(
const gfx::Size& tile_size,
const gfx::Size& layer_bounds) {
FakePicturePile pile(ImplSidePaintingSettings().minimum_contents_scale,
ImplSidePaintingSettings().default_tile_grid_size);
pile.tiling().SetBorderTexels(0);
pile.tiling().SetTilingSize(layer_bounds);
pile.tiling().SetMaxTextureSize(tile_size);
pile.SetRecordedViewport(gfx::Rect(layer_bounds));
pile.SetHasAnyRecordings(true);
scoped_refptr<FakePicturePileImpl> pile_impl(
new FakePicturePileImpl(&pile, nullptr));
for (int x = 0; x < pile_impl->tiling().num_tiles_x(); ++x) {
for (int y = 0; y < pile_impl->tiling().num_tiles_y(); ++y)
pile_impl->AddRecordingAt(x, y);
}
return pile_impl;
}
scoped_refptr<FakePicturePileImpl> FakePicturePileImpl::CreateEmptyPile(
const gfx::Size& tile_size,
const gfx::Size& layer_bounds) {
FakePicturePile pile(ImplSidePaintingSettings().minimum_contents_scale,
ImplSidePaintingSettings().default_tile_grid_size);
pile.tiling().SetBorderTexels(0);
pile.tiling().SetTilingSize(layer_bounds);
pile.tiling().SetMaxTextureSize(tile_size);
pile.SetRecordedViewport(gfx::Rect());
pile.SetHasAnyRecordings(false);
return make_scoped_refptr(new FakePicturePileImpl(&pile, nullptr));
}
scoped_refptr<FakePicturePileImpl>
FakePicturePileImpl::CreateEmptyPileThatThinksItHasRecordings(
const gfx::Size& tile_size,
const gfx::Size& layer_bounds) {
FakePicturePile pile(ImplSidePaintingSettings().minimum_contents_scale,
ImplSidePaintingSettings().default_tile_grid_size);
pile.tiling().SetBorderTexels(0);
pile.tiling().SetTilingSize(layer_bounds);
pile.tiling().SetMaxTextureSize(tile_size);
// This simulates a false positive for this flag.
pile.SetRecordedViewport(gfx::Rect());
pile.SetHasAnyRecordings(true);
return make_scoped_refptr(new FakePicturePileImpl(&pile, nullptr));
}
scoped_refptr<FakePicturePileImpl>
FakePicturePileImpl::CreateInfiniteFilledPile() {
gfx::Size size(std::numeric_limits<int>::max(),
std::numeric_limits<int>::max());
FakePicturePile pile(ImplSidePaintingSettings().minimum_contents_scale, size);
pile.tiling().SetBorderTexels(0);
pile.tiling().SetTilingSize(size);
pile.tiling().SetMaxTextureSize(size);
pile.SetRecordedViewport(gfx::Rect(size));
pile.SetHasAnyRecordings(true);
scoped_refptr<FakePicturePileImpl> pile_impl(
new FakePicturePileImpl(&pile, nullptr));
pile_impl->AddRecordingAt(0, 0);
return pile_impl;
}
scoped_refptr<FakePicturePileImpl> FakePicturePileImpl::CreateFromPile(
const PicturePile* other,
base::WaitableEvent* playback_allowed_event) {
return make_scoped_refptr(
new FakePicturePileImpl(other, playback_allowed_event));
}
void FakePicturePileImpl::PlaybackToCanvas(SkCanvas* canvas,
const gfx::Rect& canvas_rect,
float contents_scale) const {
if (playback_allowed_event_)
playback_allowed_event_->Wait();
PicturePileImpl::PlaybackToCanvas(canvas, canvas_rect, contents_scale);
}
void FakePicturePileImpl::AddRecordingAt(int x, int y) {
EXPECT_GE(x, 0);
EXPECT_GE(y, 0);
EXPECT_LT(x, tiling_.num_tiles_x());
EXPECT_LT(y, tiling_.num_tiles_y());
if (HasRecordingAt(x, y))
return;
gfx::Rect bounds(tiling().TileBounds(x, y));
bounds.Inset(-buffer_pixels(), -buffer_pixels());
scoped_refptr<Picture> picture(
Picture::Create(bounds, &client_, tile_grid_size_, true,
RecordingSource::RECORD_NORMALLY));
picture_map_[std::pair<int, int>(x, y)].SetPicture(picture);
EXPECT_TRUE(HasRecordingAt(x, y));
has_any_recordings_ = true;
}
void FakePicturePileImpl::RemoveRecordingAt(int x, int y) {
EXPECT_GE(x, 0);
EXPECT_GE(y, 0);
EXPECT_LT(x, tiling_.num_tiles_x());
EXPECT_LT(y, tiling_.num_tiles_y());
if (!HasRecordingAt(x, y))
return;
picture_map_.erase(std::pair<int, int>(x, y));
EXPECT_FALSE(HasRecordingAt(x, y));
}
bool FakePicturePileImpl::HasRecordingAt(int x, int y) const {
PictureMap::const_iterator found = picture_map_.find(PictureMapKey(x, y));
if (found == picture_map_.end())
return false;
return !!found->second.GetPicture();
}
void FakePicturePileImpl::RerecordPile() {
for (int y = 0; y < num_tiles_y(); ++y) {
for (int x = 0; x < num_tiles_x(); ++x) {
RemoveRecordingAt(x, y);
AddRecordingAt(x, y);
}
}
}
void FakePicturePileImpl::SetMinContentsScale(float min_contents_scale) {
if (min_contents_scale_ == min_contents_scale)
return;
// Picture contents are played back scaled. When the final contents scale is
// less than 1 (i.e. low res), then multiple recorded pixels will be used
// to raster one final pixel. To avoid splitting a final pixel across
// pictures (which would result in incorrect rasterization due to blending), a
// buffer margin is added so that any picture can be snapped to integral
// final pixels.
//
// For example, if a 1/4 contents scale is used, then that would be 3 buffer
// pixels, since that's the minimum number of pixels to add so that resulting
// content can be snapped to a four pixel aligned grid.
int buffer_pixels = static_cast<int>(ceil(1 / min_contents_scale) - 1);
buffer_pixels = std::max(0, buffer_pixels);
SetBufferPixels(buffer_pixels);
min_contents_scale_ = min_contents_scale;
}
void FakePicturePileImpl::SetBufferPixels(int new_buffer_pixels) {
if (new_buffer_pixels == buffer_pixels())
return;
Clear();
tiling_.SetBorderTexels(new_buffer_pixels);
}
void FakePicturePileImpl::Clear() {
picture_map_.clear();
recorded_viewport_ = gfx::Rect();
}
} // namespace cc
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