ui/wm/core/masked_window_targeter.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/wm/core/masked_window_targeter.h"
   6
   7 #include "ui/aura/window.h"
   8 #include "ui/gfx/path.h"
   9
  10 namespace wm {
  11
  12 MaskedWindowTargeter::MaskedWindowTargeter(aura::Window* masked_window)
  13     : masked_window_(masked_window) {
  14 }
  15
  16 MaskedWindowTargeter::~MaskedWindowTargeter() {}
  17
  18 bool MaskedWindowTargeter::EventLocationInsideBounds(
  19     ui::EventTarget* target,
  20     const ui::LocatedEvent& event) const {
  21   aura::Window* window = static_cast<aura::Window*>(target);
  22   if (window == masked_window_) {
  23     gfx::Path mask;
  24     if (!GetHitTestMask(window, &mask))
  25       return WindowTargeter::EventLocationInsideBounds(window, event);
  26
  27     gfx::Size size = window->bounds().size();
  28     SkRegion clip_region;
  29     clip_region.setRect(0, 0, size.width(), size.height());
  30
  31     gfx::Point point = event.location();
  32     if (window->parent())
  33       aura::Window::ConvertPointToTarget(window->parent(), window, &point);
  34
  35     SkRegion mask_region;
  36     return mask_region.setPath(mask, clip_region) &&
  37            mask_region.contains(point.x(), point.y());
  38   }
  39
  40   return WindowTargeter::EventLocationInsideBounds(window, event);
  41 }
  42
  43 }  // namespace wm