ui/ozone/platform/dri/dri_window_manager.cc

   1 // Copyright 2014 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 "ui/ozone/platform/dri/dri_window_manager.h"
   6
   7 #include "base/logging.h"
   8 #include "ui/ozone/platform/dri/dri_cursor.h"
   9 #include "ui/ozone/platform/dri/dri_window.h"
  10
  11 namespace ui {
  12
  13 namespace {
  14
  15 gfx::PointF GetDefaultCursorLocation(DriWindow* window) {
  16   return gfx::PointF(window->GetBounds().width() / 2,
  17                      window->GetBounds().height() / 2);
  18 }
  19
  20 }  // namespace
  21
  22 DriWindowManager::DriWindowManager(HardwareCursorDelegate* cursor_delegate)
  23     : last_allocated_widget_(0), cursor_(new DriCursor(cursor_delegate, this)) {
  24 }
  25
  26 DriWindowManager::~DriWindowManager() {
  27 }
  28
  29 gfx::AcceleratedWidget DriWindowManager::NextAcceleratedWidget() {
  30   // We're not using 0 since other code assumes that a 0 AcceleratedWidget is an
  31   // invalid widget.
  32   return ++last_allocated_widget_;
  33 }
  34
  35 void DriWindowManager::AddWindow(gfx::AcceleratedWidget widget,
  36                                  DriWindow* window) {
  37   std::pair<WidgetToWindowMap::iterator, bool> result = window_map_.insert(
  38       std::pair<gfx::AcceleratedWidget, DriWindow*>(widget, window));
  39   DCHECK(result.second) << "Window for " << widget << " already added.";
  40
  41   if (cursor_->GetCursorWindow() == gfx::kNullAcceleratedWidget)
  42     ResetCursorLocation();
  43 }
  44
  45 void DriWindowManager::RemoveWindow(gfx::AcceleratedWidget widget) {
  46   WidgetToWindowMap::iterator it = window_map_.find(widget);
  47   if (it != window_map_.end())
  48     window_map_.erase(it);
  49   else
  50     NOTREACHED() << "Attempting to remove non-existing window " << widget;
  51
  52   if (cursor_->GetCursorWindow() == widget)
  53     ResetCursorLocation();
  54 }
  55
  56 DriWindow* DriWindowManager::GetWindow(gfx::AcceleratedWidget widget) {
  57   WidgetToWindowMap::iterator it = window_map_.find(widget);
  58   if (it != window_map_.end())
  59     return it->second;
  60
  61   NOTREACHED() << "Attempting to get non-existing window " << widget;
  62   return NULL;
  63 }
  64
  65 void DriWindowManager::ResetCursorLocation() {
  66   gfx::AcceleratedWidget cursor_widget = gfx::kNullAcceleratedWidget;
  67   gfx::PointF location;
  68   if (!window_map_.empty()) {
  69     WidgetToWindowMap::iterator it = window_map_.begin();
  70     cursor_widget = it->first;
  71     location = GetDefaultCursorLocation(it->second);
  72   }
  73
  74   cursor_->MoveCursorTo(cursor_widget, location);
  75 }
  76
  77 }  // namespace ui