ui/views/event_monitor_mac.mm

   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 #import "ui/views/event_monitor_mac.h"
   6
   7 #import <Cocoa/Cocoa.h>
   8
   9 #include "base/logging.h"
  10 #include "ui/events/event.h"
  11 #include "ui/events/event_handler.h"
  12 #include "ui/events/event_utils.h"
  13
  14 namespace views {
  15
  16 // static
  17 scoped_ptr<EventMonitor> EventMonitor::CreateApplicationMonitor(
  18     ui::EventHandler* event_handler) {
  19   return make_scoped_ptr(new EventMonitorMac(event_handler, nullptr));
  20 }
  21
  22 // static
  23 scoped_ptr<EventMonitor> EventMonitor::CreateWindowMonitor(
  24     ui::EventHandler* event_handler,
  25     gfx::NativeWindow target_window) {
  26   return make_scoped_ptr(new EventMonitorMac(event_handler, target_window));
  27 }
  28
  29 // static
  30 gfx::Point EventMonitor::GetLastMouseLocation() {
  31   NSPoint mouseLocation = [NSEvent mouseLocation];
  32   // Flip coordinates to gfx (0,0 in top-left corner) using primary screen.
  33   NSScreen* screen = [[NSScreen screens] objectAtIndex:0];
  34   mouseLocation.y = NSMaxY([screen frame]) - mouseLocation.y;
  35   return gfx::Point(mouseLocation.x, mouseLocation.y);
  36 }
  37
  38 EventMonitorMac::EventMonitorMac(ui::EventHandler* event_handler,
  39                                  gfx::NativeWindow target_window) {
  40   DCHECK(event_handler);
  41   monitor_ = [NSEvent addLocalMonitorForEventsMatchingMask:NSAnyEventMask
  42       handler:^NSEvent*(NSEvent* event) {
  43           if (!target_window || [event window] == target_window) {
  44             scoped_ptr<ui::Event> ui_event = ui::EventFromNative(event);
  45             if (ui_event)
  46               event_handler->OnEvent(ui_event.get());
  47           }
  48           return event;
  49       }];
  50 }
  51
  52 EventMonitorMac::~EventMonitorMac() {
  53   [NSEvent removeMonitor:monitor_];
  54 }
  55
  56 }  // namespace views