// Copyright 2014 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/layer_tree_host_common_test.h"

#include <stddef.h>

#include "cc/layers/layer.h"
#include "cc/layers/layer_impl.h"
#include "cc/test/fake_layer_tree_host.h"
#include "cc/trees/draw_property_utils.h"
#include "cc/trees/layer_tree_host_common.h"

namespace cc {
LayerTreeHostCommonTestBase::LayerTreeHostCommonTestBase(
    const LayerTreeSettings& settings)
    : LayerTestCommon::LayerImplTest(settings),
      render_surface_layer_list_count_(0) {
}

LayerTreeHostCommonTestBase::~LayerTreeHostCommonTestBase() {
}

void LayerTreeHostCommonTestBase::SetLayerPropertiesForTesting(
    Layer* layer,
    const gfx::Transform& transform,
    const gfx::Point3F& transform_origin,
    const gfx::PointF& position,
    const gfx::Size& bounds,
    bool flatten_transform,
    bool is_3d_sorted) {
  SetLayerPropertiesForTestingInternal(layer, transform, transform_origin,
                                       position, bounds, flatten_transform,
                                       is_3d_sorted);
}

void LayerTreeHostCommonTestBase::SetLayerPropertiesForTesting(
    LayerImpl* layer,
    const gfx::Transform& transform,
    const gfx::Point3F& transform_origin,
    const gfx::PointF& position,
    const gfx::Size& bounds,
    bool flatten_transform,
    bool is_3d_sorted) {
  SetLayerPropertiesForTestingInternal(layer, transform, transform_origin,
                                       position, bounds, flatten_transform,
                                       is_3d_sorted);
}

void LayerTreeHostCommonTestBase::SetLayerPropertiesForTesting(
    LayerImpl* layer,
    const gfx::Transform& transform,
    const gfx::Point3F& transform_origin,
    const gfx::PointF& position,
    const gfx::Size& bounds,
    bool flatten_transform,
    bool is_3d_sorted,
    bool create_render_surface) {
  SetLayerPropertiesForTestingInternal(layer, transform, transform_origin,
                                       position, bounds, flatten_transform,
                                       is_3d_sorted);
  if (create_render_surface) {
    layer->SetForceRenderSurface(true);
  }
}

void LayerTreeHostCommonTestBase::ExecuteCalculateDrawProperties(
    Layer* root_layer,
    float device_scale_factor,
    float page_scale_factor,
    Layer* page_scale_layer,
    bool can_use_lcd_text,
    bool layers_always_allowed_lcd_text) {
  LayerTreeHostCommon::PreCalculateMetaInformation(root_layer);

  EXPECT_TRUE(page_scale_layer || (page_scale_factor == 1.f));
  gfx::Transform identity_matrix;
  gfx::Size device_viewport_size =
      gfx::Size(root_layer->bounds().width() * device_scale_factor,
                root_layer->bounds().height() * device_scale_factor);

  // We are probably not testing what is intended if the root_layer bounds are
  // empty.
  DCHECK(!root_layer->bounds().IsEmpty());
  LayerTreeHostCommon::CalcDrawPropsMainInputs inputs(root_layer,
                                                      device_viewport_size);
  inputs.device_scale_factor = device_scale_factor;
  inputs.page_scale_factor = page_scale_factor;
  inputs.page_scale_layer = page_scale_layer;
  LayerTreeHostCommon::CalculateDrawProperties(&inputs);
}

void LayerTreeHostCommonTestBase::
    ExecuteCalculateDrawPropertiesWithPropertyTrees(Layer* root_layer) {
  DCHECK(root_layer->layer_tree_host());
  LayerTreeHostCommon::PreCalculateMetaInformation(root_layer);

  gfx::Transform identity_transform;

  bool can_render_to_separate_surface = true;

  const Layer* page_scale_layer =
      root_layer->layer_tree_host()->page_scale_layer();
  Layer* inner_viewport_scroll_layer =
      root_layer->layer_tree_host()->inner_viewport_scroll_layer();
  Layer* outer_viewport_scroll_layer =
      root_layer->layer_tree_host()->outer_viewport_scroll_layer();
  const Layer* overscroll_elasticity_layer =
      root_layer->layer_tree_host()->overscroll_elasticity_layer();
  gfx::Vector2dF elastic_overscroll =
      root_layer->layer_tree_host()->elastic_overscroll();
  float page_scale_factor = 1.f;
  float device_scale_factor = 1.f;
  gfx::Size device_viewport_size =
      gfx::Size(root_layer->bounds().width() * device_scale_factor,
                root_layer->bounds().height() * device_scale_factor);
  draw_property_utils::BuildPropertyTreesAndComputeVisibleRects(
      root_layer, page_scale_layer, inner_viewport_scroll_layer,
      outer_viewport_scroll_layer, overscroll_elasticity_layer,
      elastic_overscroll, page_scale_factor, device_scale_factor,
      gfx::Rect(device_viewport_size), identity_transform,
      can_render_to_separate_surface,
      root_layer->layer_tree_host()->property_trees(), &update_layer_list_);
}

void LayerTreeHostCommonTestBase::
    ExecuteCalculateDrawPropertiesWithPropertyTrees(LayerImpl* root_layer) {
  DCHECK(root_layer->layer_tree_impl());
  LayerTreeHostCommon::PreCalculateMetaInformationForTesting(root_layer);

  gfx::Transform identity_transform;

  bool can_render_to_separate_surface = true;

  LayerImpl* page_scale_layer = nullptr;
  LayerImpl* inner_viewport_scroll_layer =
      root_layer->layer_tree_impl()->InnerViewportScrollLayer();
  LayerImpl* outer_viewport_scroll_layer =
      root_layer->layer_tree_impl()->OuterViewportScrollLayer();
  LayerImpl* overscroll_elasticity_layer =
      root_layer->layer_tree_impl()->OverscrollElasticityLayer();
  gfx::Vector2dF elastic_overscroll =
      root_layer->layer_tree_impl()->elastic_overscroll()->Current(
          root_layer->layer_tree_impl()->IsActiveTree());
  float page_scale_factor = 1.f;
  float device_scale_factor = 1.f;
  gfx::Size device_viewport_size =
      gfx::Size(root_layer->bounds().width() * device_scale_factor,
                root_layer->bounds().height() * device_scale_factor);
  update_layer_list_impl_.reset(new LayerImplList);
  draw_property_utils::BuildPropertyTreesAndComputeVisibleRects(
      root_layer, page_scale_layer, inner_viewport_scroll_layer,
      outer_viewport_scroll_layer, overscroll_elasticity_layer,
      elastic_overscroll, page_scale_factor, device_scale_factor,
      gfx::Rect(device_viewport_size), identity_transform,
      can_render_to_separate_surface,
      root_layer->layer_tree_impl()->property_trees(),
      update_layer_list_impl_.get());
}

void LayerTreeHostCommonTestBase::ExecuteCalculateDrawProperties(
    LayerImpl* root_layer,
    float device_scale_factor,
    float page_scale_factor,
    LayerImpl* page_scale_layer,
    bool can_use_lcd_text,
    bool layers_always_allowed_lcd_text) {
  root_layer->layer_tree_impl()->SetDeviceScaleFactor(device_scale_factor);
  if (page_scale_layer)
    root_layer->layer_tree_impl()->SetViewportLayersFromIds(
        Layer::INVALID_ID, page_scale_layer->id(), Layer::INVALID_ID,
        Layer::INVALID_ID);
  root_layer->layer_tree_impl()->SetPageScaleOnActiveTree(page_scale_factor);

  gfx::Transform identity_matrix;
  gfx::Size device_viewport_size =
      gfx::Size(root_layer->bounds().width() * device_scale_factor,
                root_layer->bounds().height() * device_scale_factor);

  render_surface_layer_list_impl_.reset(new LayerImplList);

  // We are probably not testing what is intended if the root_layer bounds are
  // empty.
  DCHECK(!root_layer->bounds().IsEmpty());
  root_layer->layer_tree_impl()->IncrementRenderSurfaceListIdForTesting();
  LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
      root_layer, device_viewport_size, render_surface_layer_list_impl_.get(),
      root_layer->layer_tree_impl()->current_render_surface_list_id());
  inputs.device_scale_factor = device_scale_factor;
  inputs.page_scale_factor = page_scale_factor;
  inputs.page_scale_layer = page_scale_layer;
  inputs.can_use_lcd_text = can_use_lcd_text;
  inputs.layers_always_allowed_lcd_text = layers_always_allowed_lcd_text;
  inputs.can_adjust_raster_scales = true;

  render_surface_layer_list_count_ =
      inputs.current_render_surface_layer_list_id;

  LayerTreeHostCommon::CalculateDrawProperties(&inputs);
}

void LayerTreeHostCommonTestBase::
    ExecuteCalculateDrawPropertiesWithoutSeparateSurfaces(
        LayerImpl* root_layer) {
  gfx::Transform identity_matrix;
  gfx::Size device_viewport_size =
      gfx::Size(root_layer->bounds().width(), root_layer->bounds().height());
  render_surface_layer_list_impl_.reset(new LayerImplList);

  DCHECK(!root_layer->bounds().IsEmpty());
  root_layer->layer_tree_impl()->IncrementRenderSurfaceListIdForTesting();
  LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
      root_layer, device_viewport_size, render_surface_layer_list_impl_.get(),
      root_layer->layer_tree_impl()->current_render_surface_list_id());
  inputs.can_adjust_raster_scales = true;
  inputs.can_render_to_separate_surface = false;

  render_surface_layer_list_count_ =
      inputs.current_render_surface_layer_list_id;

  LayerTreeHostCommon::CalculateDrawProperties(&inputs);
}

bool LayerTreeHostCommonTestBase::UpdateLayerListContains(int id) const {
  for (size_t i = 0; i < update_layer_list_.size(); ++i) {
    if (update_layer_list_[i]->id() == id)
      return true;
  }
  return false;
}

LayerTreeHostCommonTest::LayerTreeHostCommonTest()
    : LayerTreeHostCommonTestBase(LayerTreeSettings()) {}

LayerTreeHostCommonTest::LayerTreeHostCommonTest(
    const LayerTreeSettings& settings)
    : LayerTreeHostCommonTestBase(settings) {
}

}  // namespace cc