Part 8 of cc/ directory shuffles: resources

cc/picture_layer_tiling_set.cc

-// Copyright 2012 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/picture_layer_tiling_set.h"
-
-namespace cc {
-
-namespace {
-
-class LargestToSmallestScaleFunctor {
- public:
-  bool operator() (PictureLayerTiling* left, PictureLayerTiling* right) {
-    return left->contents_scale() > right->contents_scale();
-  }
-};
-
-}  // namespace
-
-
-PictureLayerTilingSet::PictureLayerTilingSet(
-    PictureLayerTilingClient * client)
-    : client_(client) {
-}
-
-PictureLayerTilingSet::~PictureLayerTilingSet() {
-}
-
-void PictureLayerTilingSet::SetClient(PictureLayerTilingClient* client) {
-  client_ = client;
-  for (size_t i = 0; i < tilings_.size(); ++i)
-    tilings_[i]->SetClient(client_);
-}
-
-void PictureLayerTilingSet::CloneAll(
-    const PictureLayerTilingSet& other,
-    const Region& invalidation,
-    float minimum_contents_scale) {
-  tilings_.clear();
-  tilings_.reserve(other.tilings_.size());
-  for (size_t i = 0; i < other.tilings_.size(); ++i) {
-    if (other.tilings_[i]->contents_scale() < minimum_contents_scale)
-      continue;
-    Clone(other.tilings_[i], invalidation);
-  }
-}
-
-void PictureLayerTilingSet::Clone(
-    const PictureLayerTiling* tiling,
-    const Region& invalidation) {
-
-  for (size_t i = 0; i < tilings_.size(); ++i)
-    DCHECK_NE(tilings_[i]->contents_scale(), tiling->contents_scale());
-
-  tilings_.push_back(tiling->Clone());
-  gfx::Size size = tilings_.back()->layer_bounds();
-  tilings_.back()->SetClient(client_);
-  tilings_.back()->Invalidate(invalidation);
-  // Intentionally use this set's layer bounds, as it may have changed.
-  tilings_.back()->SetLayerBounds(layer_bounds_);
-
-  tilings_.sort(LargestToSmallestScaleFunctor());
-}
-
-void PictureLayerTilingSet::SetLayerBounds(gfx::Size layer_bounds) {
-  if (layer_bounds_ == layer_bounds)
-    return;
-  layer_bounds_ = layer_bounds;
-  for (size_t i = 0; i < tilings_.size(); ++i)
-    tilings_[i]->SetLayerBounds(layer_bounds);
-}
-
-gfx::Size PictureLayerTilingSet::LayerBounds() const {
-  return layer_bounds_;
-}
-
-PictureLayerTiling* PictureLayerTilingSet::AddTiling(float contents_scale) {
-  tilings_.push_back(PictureLayerTiling::Create(contents_scale));
-  PictureLayerTiling* appended = tilings_.back();
-  appended->SetClient(client_);
-  appended->SetLayerBounds(layer_bounds_);
-
-  tilings_.sort(LargestToSmallestScaleFunctor());
-  return appended;
-}
-
-void PictureLayerTilingSet::RemoveAllTilings() {
-  tilings_.clear();
-}
-
-void PictureLayerTilingSet::Remove(PictureLayerTiling* tiling) {
-  ScopedPtrVector<PictureLayerTiling>::iterator iter =
-    std::find(tilings_.begin(), tilings_.end(), tiling);
-  if (iter == tilings_.end())
-    return;
-  tilings_.erase(iter);
-}
-
-void PictureLayerTilingSet::RemoveAllTiles() {
-  for (size_t i = 0; i < tilings_.size(); ++i)
-    tilings_[i]->Reset();
-}
-
-void PictureLayerTilingSet::CreateTilesFromLayerRect(gfx::Rect layer_rect) {
-  for (size_t i = 0; i < tilings_.size(); ++i)
-    tilings_[i]->CreateTilesFromLayerRect(layer_rect);
-}
-
-PictureLayerTilingSet::Iterator::Iterator(
-    const PictureLayerTilingSet* set,
-    float contents_scale,
-    gfx::Rect content_rect,
-    float ideal_contents_scale,
-    PictureLayerTiling::LayerDeviceAlignment layerDeviceAlignment)
-    : set_(set),
-      contents_scale_(contents_scale),
-      ideal_contents_scale_(ideal_contents_scale),
-      layer_device_alignment_(layerDeviceAlignment),
-      current_tiling_(-1) {
-  missing_region_.Union(content_rect);
-
-  for (ideal_tiling_ = 0;
-       static_cast<size_t>(ideal_tiling_) < set_->tilings_.size();
-       ++ideal_tiling_) {
-    PictureLayerTiling* tiling = set_->tilings_[ideal_tiling_];
-    if (tiling->contents_scale() < ideal_contents_scale_) {
-      if (ideal_tiling_ > 0)
-        ideal_tiling_--;
-      break;
-    }
-  }
-
-  if (ideal_tiling_ == set_->tilings_.size() && ideal_tiling_ > 0)
-    ideal_tiling_--;
-
-  ++(*this);
-}
-
-PictureLayerTilingSet::Iterator::~Iterator() {
-}
-
-gfx::Rect PictureLayerTilingSet::Iterator::geometry_rect() const {
-  if (!tiling_iter_) {
-    if (!region_iter_.has_rect())
-      return gfx::Rect();
-    return region_iter_.rect();
-  }
-  return tiling_iter_.geometry_rect();
-}
-
-gfx::RectF PictureLayerTilingSet::Iterator::texture_rect() const {
-  if (!tiling_iter_)
-    return gfx::RectF();
-  return tiling_iter_.texture_rect();
-}
-
-gfx::Size PictureLayerTilingSet::Iterator::texture_size() const {
-  if (!tiling_iter_)
-    return gfx::Size();
-  return tiling_iter_.texture_size();
-}
-
-Tile* PictureLayerTilingSet::Iterator::operator->() const {
-  if (!tiling_iter_)
-    return NULL;
-  return *tiling_iter_;
-}
-
-Tile* PictureLayerTilingSet::Iterator::operator*() const {
-  if (!tiling_iter_)
-    return NULL;
-  return *tiling_iter_;
-}
-
-PictureLayerTiling* PictureLayerTilingSet::Iterator::CurrentTiling() {
-  if (current_tiling_ < 0)
-    return NULL;
-  if (static_cast<size_t>(current_tiling_) >= set_->tilings_.size())
-    return NULL;
-  return set_->tilings_[current_tiling_];
-}
-
-int PictureLayerTilingSet::Iterator::NextTiling() const {
-  // Order returned by this method is:
-  // 1. Ideal tiling index
-  // 2. Tiling index < Ideal in decreasing order (higher res than ideal)
-  // 3. Tiling index > Ideal in increasing order (lower res than ideal)
-  // 4. Tiling index > tilings.size() (invalid index)
-  if (current_tiling_ < 0)
-    return ideal_tiling_;
-  else if (current_tiling_ > ideal_tiling_)
-    return current_tiling_ + 1;
-  else if (current_tiling_)
-    return current_tiling_ - 1;
-  else
-    return ideal_tiling_ + 1;
-}
-
-PictureLayerTilingSet::Iterator& PictureLayerTilingSet::Iterator::operator++() {
-  bool first_time = current_tiling_ < 0;
-
-  if (!*this && !first_time)
-    return *this;
-
-  if (tiling_iter_)
-    ++tiling_iter_;
-
-  // Loop until we find a valid place to stop.
-  while (true) {
-    while (tiling_iter_ &&
-           (!*tiling_iter_ || !tiling_iter_->drawing_info().IsReadyToDraw())) {
-      missing_region_.Union(tiling_iter_.geometry_rect());
-      ++tiling_iter_;
-    }
-    if (tiling_iter_)
-      return *this;
-
-    // If the set of current rects for this tiling is done, go to the next
-    // tiling and set up to iterate through all of the remaining holes.
-    // This will also happen the first time through the loop.
-    if (!region_iter_.has_rect()) {
-      current_tiling_ = NextTiling();
-      current_region_.Swap(missing_region_);
-      missing_region_.Clear();
-      region_iter_ = Region::Iterator(current_region_);
-
-      // All done and all filled.
-      if (!region_iter_.has_rect()) {
-        current_tiling_ = set_->tilings_.size();
-        return *this;
-      }
-
-      // No more valid tiles, return this checkerboard rect.
-      if (current_tiling_ >= static_cast<int>(set_->tilings_.size()))
-        return *this;
-    }
-
-    // Pop a rect off.  If there are no more tilings, then these will be
-    // treated as geometry with null tiles that the caller can checkerboard.
-    gfx::Rect last_rect = region_iter_.rect();
-    region_iter_.next();
-
-    // Done, found next checkerboard rect to return.
-    if (current_tiling_ >= static_cast<int>(set_->tilings_.size()))
-      return *this;
-
-    // Construct a new iterator for the next tiling, but we need to loop
-    // again until we get to a valid one.
-    tiling_iter_ = PictureLayerTiling::Iterator(
-        set_->tilings_[current_tiling_],
-        contents_scale_,
-        last_rect,
-        layer_device_alignment_);
-  }
-
-  return *this;
-}
-
-PictureLayerTilingSet::Iterator::operator bool() const {
-  return current_tiling_ < static_cast<int>(set_->tilings_.size()) ||
-      region_iter_.has_rect();
-}
-
-void PictureLayerTilingSet::UpdateTilePriorities(
-    WhichTree tree,
-    gfx::Size device_viewport,
-    gfx::Rect viewport_in_content_space,
-    gfx::Size last_layer_bounds,
-    gfx::Size current_layer_bounds,
-    float last_layer_contents_scale,
-    float current_layer_contents_scale,
-    const gfx::Transform& last_screen_transform,
-    const gfx::Transform& current_screen_transform,
-    int current_source_frame_number,
-    double current_frame_time,
-    bool store_screen_space_quads_on_tiles) {
-  gfx::RectF viewport_in_layer_space = gfx::ScaleRect(
-    viewport_in_content_space,
-    1.f / current_layer_contents_scale,
-    1.f / current_layer_contents_scale);
-
-  for (size_t i = 0; i < tilings_.size(); ++i) {
-    tilings_[i]->UpdateTilePriorities(
-        tree,
-        device_viewport,
-        viewport_in_layer_space,
-        last_layer_bounds,
-        current_layer_bounds,
-        last_layer_contents_scale,
-        current_layer_contents_scale,
-        last_screen_transform,
-        current_screen_transform,
-        current_source_frame_number,
-        current_frame_time,
-        store_screen_space_quads_on_tiles);
-  }
-}
-
-void PictureLayerTilingSet::DidBecomeActive() {
-  for (size_t i = 0; i < tilings_.size(); ++i)
-    tilings_[i]->DidBecomeActive();
-}
-
-scoped_ptr<base::Value> PictureLayerTilingSet::AsValue() const {
-  scoped_ptr<base::ListValue> state(new base::ListValue());
-  for (size_t i = 0; i < tilings_.size(); ++i)
-    state->Append(tilings_[i]->AsValue().release());
-  return state.PassAs<base::Value>();
-}
-
-}  // namespace cc