// 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/surfaces/surface_aggregator_test_helpers.h"

#include "base/format_macros.h"
#include "base/strings/stringprintf.h"
#include "cc/layers/append_quads_data.h"
#include "cc/output/compositor_frame.h"
#include "cc/output/delegated_frame_data.h"
#include "cc/quads/render_pass_draw_quad.h"
#include "cc/quads/shared_quad_state.h"
#include "cc/quads/solid_color_draw_quad.h"
#include "cc/quads/surface_draw_quad.h"
#include "cc/surfaces/surface.h"
#include "cc/test/render_pass_test_common.h"
#include "cc/test/render_pass_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkXfermode.h"

namespace cc {
namespace test {

void AddTestSurfaceQuad(TestRenderPass* pass,
                        const gfx::Size& surface_size,
                        float opacity,
                        SurfaceId surface_id) {
  gfx::Transform content_to_target_transform;
  gfx::Size content_bounds = surface_size;
  gfx::Rect visible_content_rect = gfx::Rect(surface_size);
  gfx::Rect clip_rect = gfx::Rect(surface_size);
  bool is_clipped = false;
  SkXfermode::Mode blend_mode = SkXfermode::kSrcOver_Mode;

  SharedQuadState* shared_quad_state = pass->CreateAndAppendSharedQuadState();
  shared_quad_state->SetAll(content_to_target_transform,
                            content_bounds,
                            visible_content_rect,
                            clip_rect,
                            is_clipped,
                            opacity,
                            blend_mode,
                            0);

  SurfaceDrawQuad* surface_quad =
      pass->CreateAndAppendDrawQuad<SurfaceDrawQuad>();
  gfx::Rect quad_rect = gfx::Rect(surface_size);
  surface_quad->SetNew(pass->shared_quad_state_list.back(),
                       gfx::Rect(surface_size),
                       gfx::Rect(surface_size),
                       surface_id);
}
void AddTestRenderPassQuad(TestRenderPass* pass, RenderPassId render_pass_id) {
  gfx::Rect output_rect = gfx::Rect(0, 0, 5, 5);
  SharedQuadState* shared_state = pass->CreateAndAppendSharedQuadState();
  shared_state->SetAll(gfx::Transform(),
                       output_rect.size(),
                       output_rect,
                       output_rect,
                       false,
                       1,
                       SkXfermode::kSrcOver_Mode,
                       0);
  RenderPassDrawQuad* quad =
      pass->CreateAndAppendDrawQuad<RenderPassDrawQuad>();
  quad->SetNew(shared_state,
               output_rect,
               output_rect,
               render_pass_id,
               0,
               gfx::Vector2dF(),
               gfx::Size(),
               FilterOperations(),
               gfx::Vector2dF(),
               FilterOperations());
}

void AddQuadInPass(TestRenderPass* pass, Quad desc) {
  switch (desc.material) {
    case DrawQuad::SOLID_COLOR:
      AddQuad(pass, gfx::Rect(0, 0, 5, 5), desc.color);
      break;
    case DrawQuad::SURFACE_CONTENT:
      AddTestSurfaceQuad(pass, gfx::Size(5, 5), desc.opacity, desc.surface_id);
      break;
    case DrawQuad::RENDER_PASS:
      AddTestRenderPassQuad(pass, desc.render_pass_id);
      break;
    default:
      NOTREACHED();
  }
}

void AddPasses(RenderPassList* pass_list,
               const gfx::Rect& output_rect,
               Pass* passes,
               size_t pass_count) {
  gfx::Transform root_transform;
  for (size_t i = 0; i < pass_count; ++i) {
    Pass pass = passes[i];
    TestRenderPass* test_pass =
        AddRenderPass(pass_list, pass.id, output_rect, root_transform);
    for (size_t j = 0; j < pass.quad_count; ++j) {
      AddQuadInPass(test_pass, pass.quads[j]);
    }
  }
}

void TestQuadMatchesExpectations(Quad expected_quad, const DrawQuad* quad) {
  switch (expected_quad.material) {
    case DrawQuad::SOLID_COLOR: {
      ASSERT_EQ(DrawQuad::SOLID_COLOR, quad->material);

      const SolidColorDrawQuad* solid_color_quad =
          SolidColorDrawQuad::MaterialCast(quad);

      EXPECT_EQ(expected_quad.color, solid_color_quad->color);
      break;
    }
    case DrawQuad::RENDER_PASS: {
      ASSERT_EQ(DrawQuad::RENDER_PASS, quad->material);

      const RenderPassDrawQuad* render_pass_quad =
          RenderPassDrawQuad::MaterialCast(quad);

      EXPECT_EQ(expected_quad.render_pass_id, render_pass_quad->render_pass_id);
      break;
    }
    default:
      NOTREACHED();
      break;
  }
}

void TestPassMatchesExpectations(Pass expected_pass, const RenderPass* pass) {
  ASSERT_EQ(expected_pass.quad_count, pass->quad_list.size());
  for (auto iter = pass->quad_list.cbegin(); iter != pass->quad_list.cend();
       ++iter) {
    SCOPED_TRACE(base::StringPrintf("Quad number %" PRIuS, iter.index()));
    TestQuadMatchesExpectations(expected_pass.quads[iter.index()], *iter);
  }
}

void TestPassesMatchExpectations(Pass* expected_passes,
                                 size_t expected_pass_count,
                                 const RenderPassList* passes) {
  ASSERT_EQ(expected_pass_count, passes->size());

  for (size_t i = 0; i < passes->size(); ++i) {
    SCOPED_TRACE(base::StringPrintf("Pass number %" PRIuS, i));
    RenderPass* pass = passes->at(i);
    TestPassMatchesExpectations(expected_passes[i], pass);
  }
}

}  // namespace test
}  // namespace cc