ash/wm/frame_border_hit_test_controller.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 "ash/wm/frame_border_hit_test_controller.h"
   6
   7 #include "ash/ash_constants.h"
   8 #include "ash/wm/header_painter.h"
   9 #include "ash/wm/resize_handle_window_targeter.h"
  10 #include "ash/wm/window_state_observer.h"
  11 #include "ui/aura/env.h"
  12 #include "ui/aura/window.h"
  13 #include "ui/aura/window_observer.h"
  14 #include "ui/aura/window_targeter.h"
  15 #include "ui/base/hit_test.h"
  16 #include "ui/views/widget/widget.h"
  17 #include "ui/views/widget/widget_delegate.h"
  18 #include "ui/views/window/non_client_view.h"
  19
  20 namespace ash {
  21
  22 FrameBorderHitTestController::FrameBorderHitTestController(views::Widget* frame)
  23     : frame_window_(frame->GetNativeWindow()) {
  24   frame_window_->set_event_targeter(scoped_ptr<ui::EventTargeter>(
  25       new ResizeHandleWindowTargeter(frame_window_, NULL)));
  26 }
  27
  28 FrameBorderHitTestController::~FrameBorderHitTestController() {
  29 }
  30
  31 // static
  32 int FrameBorderHitTestController::NonClientHitTest(
  33     views::NonClientFrameView* view,
  34     HeaderPainter* header_painter,
  35     const gfx::Point& point) {
  36   gfx::Rect expanded_bounds = view->bounds();
  37   int outside_bounds = kResizeOutsideBoundsSize;
  38
  39   if (aura::Env::GetInstance()->is_touch_down())
  40     outside_bounds *= kResizeOutsideBoundsScaleForTouch;
  41   expanded_bounds.Inset(-outside_bounds, -outside_bounds);
  42
  43   if (!expanded_bounds.Contains(point))
  44     return HTNOWHERE;
  45
  46   // Check the frame first, as we allow a small area overlapping the contents
  47   // to be used for resize handles.
  48   views::Widget* frame = view->GetWidget();
  49   bool can_ever_resize = frame->widget_delegate()->CanResize();
  50   // Don't allow overlapping resize handles when the window is maximized or
  51   // fullscreen, as it can't be resized in those states.
  52   int resize_border =
  53       frame->IsMaximized() || frame->IsFullscreen() ? 0 :
  54       kResizeInsideBoundsSize;
  55   int frame_component = view->GetHTComponentForFrame(point,
  56                                                      resize_border,
  57                                                      resize_border,
  58                                                      kResizeAreaCornerSize,
  59                                                      kResizeAreaCornerSize,
  60                                                      can_ever_resize);
  61   if (frame_component != HTNOWHERE)
  62     return frame_component;
  63
  64   int client_component = frame->client_view()->NonClientHitTest(point);
  65   if (client_component != HTNOWHERE)
  66     return client_component;
  67
  68   return header_painter->NonClientHitTest(point);
  69 }
  70
  71 }  // namespace ash