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_(nullptr),
  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 new_devtools_bounds;
  49   gfx::Rect new_contents_bounds;
  50
  51   ApplyDevToolsContentsResizingStrategy(strategy_, container_size,
  52       &new_devtools_bounds, &new_contents_bounds);
  53   new_devtools_bounds.Offset(0, top);
  54   new_contents_bounds.Offset(0, top);
  55
  56   // DevTools cares about the specific position, so we have to compensate RTL
  57   // layout here.
  58   new_devtools_bounds.set_x(host_->GetMirroredXForRect(new_devtools_bounds));
  59   new_contents_bounds.set_x(host_->GetMirroredXForRect(new_contents_bounds));
  60
  61   devtools_view_->SetBoundsRect(new_devtools_bounds);
  62   contents_view_->SetBoundsRect(new_contents_bounds);
  63 }
  64
  65 gfx::Size ContentsLayoutManager::GetPreferredSize(
  66     const views::View* host) const {
  67   return gfx::Size();
  68 }
  69
  70 void ContentsLayoutManager::Installed(views::View* host) {
  71   DCHECK(!host_);
  72   host_ = host;
  73 }
  74
  75 void ContentsLayoutManager::Uninstalled(views::View* host) {
  76   DCHECK(host_ == host);
  77   host_ = nullptr;
  78 }