chrome/browser/ui/views/frame/contents_layout_manager.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/views/frame/contents_layout_manager.h"
   6
   7 #include "ui/views/view.h"
   8
   9 ContentsLayoutManager::ContentsLayoutManager(
  10     views::View* devtools_view,
  11     views::View* contents_view)
  12     : devtools_view_(devtools_view),
  13       contents_view_(contents_view),
  14       host_(NULL),
  15       active_top_margin_(0) {
  16 }
  17
  18 ContentsLayoutManager::~ContentsLayoutManager() {
  19 }
  20
  21 void ContentsLayoutManager::SetContentsResizingStrategy(
  22     const DevToolsContentsResizingStrategy& strategy) {
  23   if (strategy_.Equals(strategy))
  24     return;
  25
  26   strategy_.CopyFrom(strategy);
  27   if (host_)
  28     host_->InvalidateLayout();
  29 }
  30
  31 void ContentsLayoutManager::SetActiveTopMargin(int margin) {
  32   if (active_top_margin_ == margin)
  33     return;
  34
  35   active_top_margin_ = margin;
  36   if (host_)
  37     host_->InvalidateLayout();
  38 }
  39
  40 void ContentsLayoutManager::Layout(views::View* contents_container) {
  41   DCHECK(host_ == contents_container);
  42
  43   int top = active_top_margin_;
  44   int height = std::max(0, contents_container->height() - top);
  45   int width = contents_container->width();
  46
  47   gfx::Size container_size(width, height);
  48   gfx::Rect old_devtools_bounds(devtools_view_->bounds());
  49   gfx::Rect old_contents_bounds(contents_view_->bounds());
  50   gfx::Rect new_devtools_bounds;
  51   gfx::Rect new_contents_bounds;
  52
  53   old_devtools_bounds.Offset(0, -top);
  54   old_contents_bounds.Offset(0, -top);
  55   ApplyDevToolsContentsResizingStrategy(strategy_, container_size,
  56       old_devtools_bounds, old_contents_bounds,
  57       &new_devtools_bounds, &new_contents_bounds);
  58   new_devtools_bounds.Offset(0, top);
  59   new_contents_bounds.Offset(0, top);
  60
  61   // DevTools cares about the specific position, so we have to compensate RTL
  62   // layout here.
  63   new_devtools_bounds.set_x(host_->GetMirroredXForRect(new_devtools_bounds));
  64   new_contents_bounds.set_x(host_->GetMirroredXForRect(new_contents_bounds));
  65
  66   devtools_view_->SetBoundsRect(new_devtools_bounds);
  67   contents_view_->SetBoundsRect(new_contents_bounds);
  68 }
  69
  70 gfx::Size ContentsLayoutManager::GetPreferredSize(
  71     const views::View* host) const {
  72   return gfx::Size();
  73 }
  74
  75 void ContentsLayoutManager::Installed(views::View* host) {
  76   DCHECK(!host_);
  77   host_ = host;
  78 }
  79
  80 void ContentsLayoutManager::Uninstalled(views::View* host) {
  81   DCHECK(host_ == host);
  82   host_ = NULL;
  83 }