Move shadow code to views\corewm

ash/wm/image_grid.cc

Index: ash/wm/image_grid.cc
===================================================================
--- ash/wm/image_grid.cc	(revision 167688)
+++ ash/wm/image_grid.cc	(working copy)
@@ -1,284 +0,0 @@
-// Copyright (c) 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 "ash/wm/image_grid.h"
-
-#include <algorithm>
-
-#include "third_party/skia/include/core/SkColor.h"
-#include "third_party/skia/include/core/SkXfermode.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/image/image.h"
-#include "ui/gfx/rect.h"
-#include "ui/gfx/rect_conversions.h"
-#include "ui/gfx/transform.h"
-
-using std::max;
-using std::min;
-
-namespace ash {
-namespace internal {
-
-gfx::RectF ImageGrid::TestAPI::GetTransformedLayerBounds(
-    const ui::Layer& layer) {
-  gfx::RectF bounds = layer.bounds();
-  layer.transform().TransformRect(&bounds);
-  return bounds;
-}
-
-ImageGrid::ImageGrid()
-    : layer_(new ui::Layer(ui::LAYER_NOT_DRAWN)),
-      top_image_height_(0),
-      bottom_image_height_(0),
-      left_image_width_(0),
-      right_image_width_(0),
-      base_top_row_height_(0),
-      base_bottom_row_height_(0),
-      base_left_column_width_(0),
-      base_right_column_width_(0) {
-}
-
-ImageGrid::~ImageGrid() {
-}
-
-void ImageGrid::SetImages(const gfx::Image* top_left_image,
-                          const gfx::Image* top_image,
-                          const gfx::Image* top_right_image,
-                          const gfx::Image* left_image,
-                          const gfx::Image* center_image,
-                          const gfx::Image* right_image,
-                          const gfx::Image* bottom_left_image,
-                          const gfx::Image* bottom_image,
-                          const gfx::Image* bottom_right_image) {
-  SetImage(top_left_image, &top_left_layer_, &top_left_painter_);
-  SetImage(top_image, &top_layer_, &top_painter_);
-  SetImage(top_right_image, &top_right_layer_, &top_right_painter_);
-  SetImage(left_image, &left_layer_, &left_painter_);
-  SetImage(center_image, &center_layer_, &center_painter_);
-  SetImage(right_image, &right_layer_, &right_painter_);
-  SetImage(bottom_left_image, &bottom_left_layer_, &bottom_left_painter_);
-  SetImage(bottom_image, &bottom_layer_, &bottom_painter_);
-  SetImage(bottom_right_image, &bottom_right_layer_, &bottom_right_painter_);
-
-  top_image_height_ = GetImageSize(top_image).height();
-  bottom_image_height_ = GetImageSize(bottom_image).height();
-  left_image_width_ = GetImageSize(left_image).width();
-  right_image_width_ = GetImageSize(right_image).width();
-
-  base_top_row_height_ = max(GetImageSize(top_left_image).height(),
-                             max(GetImageSize(top_image).height(),
-                                 GetImageSize(top_right_image).height()));
-  base_bottom_row_height_ = max(GetImageSize(bottom_left_image).height(),
-                                max(GetImageSize(bottom_image).height(),
-                                    GetImageSize(bottom_right_image).height()));
-  base_left_column_width_ = max(GetImageSize(top_left_image).width(),
-                                max(GetImageSize(left_image).width(),
-                                    GetImageSize(bottom_left_image).width()));
-  base_right_column_width_ = max(GetImageSize(top_right_image).width(),
-                                 max(GetImageSize(right_image).width(),
-                                     GetImageSize(bottom_right_image).width()));
-
-  // Invalidate previous |size_| so calls to SetSize() will recompute it.
-  size_.SetSize(0, 0);
-}
-
-void ImageGrid::SetSize(const gfx::Size& size) {
-  if (size_ == size)
-    return;
-
-  size_ = size;
-
-  gfx::Rect updated_bounds = layer_->bounds();
-  updated_bounds.set_size(size);
-  layer_->SetBounds(updated_bounds);
-
-  // Calculate the available amount of space for corner images on all sides of
-  // the grid.  If the images don't fit, we need to clip them.
-  const int left = min(base_left_column_width_, size_.width() / 2);
-  const int right = min(base_right_column_width_, size_.width() - left);
-  const int top = min(base_top_row_height_, size_.height() / 2);
-  const int bottom = min(base_bottom_row_height_, size_.height() - top);
-
-  // The remaining space goes to the center image.
-  int center_width = std::max(size.width() - left - right, 0);
-  int center_height = std::max(size.height() - top - bottom, 0);
-
-  if (top_layer_.get()) {
-    if (center_width > 0) {
-      gfx::Transform transform;
-      transform.SetScaleX(
-          static_cast<float>(center_width) / top_layer_->bounds().width());
-      transform.ConcatTranslate(left, 0);
-      top_layer_->SetTransform(transform);
-    }
-    top_layer_->SetVisible(center_width > 0);
-  }
-  if (bottom_layer_.get()) {
-    if (center_width > 0) {
-      gfx::Transform transform;
-      transform.SetScaleX(
-          static_cast<float>(center_width) / bottom_layer_->bounds().width());
-      transform.ConcatTranslate(
-          left, size.height() - bottom_layer_->bounds().height());
-      bottom_layer_->SetTransform(transform);
-    }
-    bottom_layer_->SetVisible(center_width > 0);
-  }
-  if (left_layer_.get()) {
-    if (center_height > 0) {
-      gfx::Transform transform;
-      transform.SetScaleY(
-          (static_cast<float>(center_height) / left_layer_->bounds().height()));
-      transform.ConcatTranslate(0, top);
-      left_layer_->SetTransform(transform);
-    }
-    left_layer_->SetVisible(center_height > 0);
-  }
-  if (right_layer_.get()) {
-    if (center_height > 0) {
-      gfx::Transform transform;
-      transform.SetScaleY(
-          static_cast<float>(center_height) / right_layer_->bounds().height());
-      transform.ConcatTranslate(
-          size.width() - right_layer_->bounds().width(), top);
-      right_layer_->SetTransform(transform);
-    }
-    right_layer_->SetVisible(center_height > 0);
-  }
-
-  if (top_left_layer_.get()) {
-    // No transformation needed; it should be at (0, 0) and unscaled.
-    top_left_painter_->SetClipRect(
-        LayerExceedsSize(top_left_layer_.get(), gfx::Size(left, top)) ?
-            gfx::Rect(gfx::Rect(0, 0, left, top)) :
-            gfx::Rect(),
-        top_left_layer_.get());
-  }
-  if (top_right_layer_.get()) {
-    gfx::Transform transform;
-    transform.SetTranslateX(size.width() - top_right_layer_->bounds().width());
-    top_right_layer_->SetTransform(transform);
-    top_right_painter_->SetClipRect(
-        LayerExceedsSize(top_right_layer_.get(), gfx::Size(right, top)) ?
-            gfx::Rect(top_right_layer_->bounds().width() - right, 0,
-                      right, top) :
-            gfx::Rect(),
-        top_right_layer_.get());
-  }
-  if (bottom_left_layer_.get()) {
-    gfx::Transform transform;
-    transform.SetTranslateY(
-        size.height() - bottom_left_layer_->bounds().height());
-    bottom_left_layer_->SetTransform(transform);
-    bottom_left_painter_->SetClipRect(
-        LayerExceedsSize(bottom_left_layer_.get(), gfx::Size(left, bottom)) ?
-            gfx::Rect(0, bottom_left_layer_->bounds().height() - bottom,
-                      left, bottom) :
-            gfx::Rect(),
-        bottom_left_layer_.get());
-  }
-  if (bottom_right_layer_.get()) {
-    gfx::Transform transform;
-    transform.SetTranslate(
-        size.width() - bottom_right_layer_->bounds().width(),
-        size.height() - bottom_right_layer_->bounds().height());
-    bottom_right_layer_->SetTransform(transform);
-    bottom_right_painter_->SetClipRect(
-        LayerExceedsSize(bottom_right_layer_.get(), gfx::Size(right, bottom)) ?
-            gfx::Rect(bottom_right_layer_->bounds().width() - right,
-                      bottom_right_layer_->bounds().height() - bottom,
-                      right, bottom) :
-            gfx::Rect(),
-        bottom_right_layer_.get());
-  }
-
-  if (center_layer_.get()) {
-    if (center_width > 0 && center_height > 0) {
-      gfx::Transform transform;
-      transform.SetScale(center_width / center_layer_->bounds().width(),
-                         center_height / center_layer_->bounds().height());
-      transform.ConcatTranslate(left, top);
-      center_layer_->SetTransform(transform);
-    }
-    center_layer_->SetVisible(center_width > 0 && center_height > 0);
-  }
-}
-
-void ImageGrid::SetContentBounds(const gfx::Rect& content_bounds) {
-  SetSize(gfx::Size(
-      content_bounds.width() + left_image_width_ + right_image_width_,
-      content_bounds.height() + top_image_height_ +
-      bottom_image_height_));
-  layer_->SetBounds(
-      gfx::Rect(content_bounds.x() - left_image_width_,
-                content_bounds.y() - top_image_height_,
-                layer_->bounds().width(),
-                layer_->bounds().height()));
-}
-
-void ImageGrid::ImagePainter::SetClipRect(const gfx::Rect& clip_rect,
-                                          ui::Layer* layer) {
-  if (clip_rect != clip_rect_) {
-    clip_rect_ = clip_rect;
-    layer->SchedulePaint(layer->bounds());
-  }
-}
-
-void ImageGrid::ImagePainter::OnPaintLayer(gfx::Canvas* canvas) {
-  if (!clip_rect_.IsEmpty())
-    canvas->ClipRect(clip_rect_);
-  canvas->DrawImageInt(*(image_->ToImageSkia()), 0, 0);
-}
-
-void ImageGrid::ImagePainter::OnDeviceScaleFactorChanged(
-    float device_scale_factor) {
-  // Redrawing will take care of scale factor change.
-}
-
-base::Closure ImageGrid::ImagePainter::PrepareForLayerBoundsChange() {
-  return base::Closure();
-}
-
-// static
-gfx::Size ImageGrid::GetImageSize(const gfx::Image* image) {
-  return image ?
-      gfx::Size(image->ToImageSkia()->width(), image->ToImageSkia()->height()) :
-      gfx::Size();
-}
-
-// static
-bool ImageGrid::LayerExceedsSize(const ui::Layer* layer,
-                                 const gfx::Size& size) {
-  return layer->bounds().width() > size.width() ||
-      layer->bounds().height() > size.height();
-}
-
-void ImageGrid::SetImage(const gfx::Image* image,
-                         scoped_ptr<ui::Layer>* layer_ptr,
-                         scoped_ptr<ImagePainter>* painter_ptr) {
-  // Clean out old layers and painters.
-  if (layer_ptr->get())
-    layer_->Remove(layer_ptr->get());
-  layer_ptr->reset();
-  painter_ptr->reset();
-
-  // If we're not using an image, we're done.
-  if (!image)
-    return;
-
-  // Set up the new layer and painter.
-  layer_ptr->reset(new ui::Layer(ui::LAYER_TEXTURED));
-
-  const gfx::Size size = GetImageSize(image);
-  layer_ptr->get()->SetBounds(gfx::Rect(0, 0, size.width(), size.height()));
-
-  painter_ptr->reset(new ImagePainter(image));
-  layer_ptr->get()->set_delegate(painter_ptr->get());
-  layer_ptr->get()->SetFillsBoundsOpaquely(false);
-  layer_ptr->get()->SetVisible(true);
-  layer_->Add(layer_ptr->get());
-}
-
-}  // namespace internal
-}  // namespace ash