widget/windows/OSKInputPaneManager.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sts=2 sw=2 et cin: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #define NTDDI_VERSION NTDDI_WIN10_RS1
   8
   9 #include "OSKInputPaneManager.h"
  10 #include "nsDebug.h"
  11
  12 #ifndef __MINGW32__
  13 #  include <inputpaneinterop.h>
  14 #  include <windows.ui.viewmanagement.h>
  15 #  include <wrl.h>
  16
  17 using namespace ABI::Windows::UI::ViewManagement;
  18 using namespace Microsoft::WRL;
  19 using namespace Microsoft::WRL::Wrappers;
  20 #endif
  21
  22 namespace mozilla {
  23 namespace widget {
  24
  25 #ifndef __MINGW32__
  26 static ComPtr<IInputPane2> GetInputPane(HWND aHwnd) {
  27   ComPtr<IInputPaneInterop> inputPaneInterop;
  28   HRESULT hr = RoGetActivationFactory(
  29       HStringReference(RuntimeClass_Windows_UI_ViewManagement_InputPane).Get(),
  30       IID_PPV_ARGS(&inputPaneInterop));
  31   if (NS_WARN_IF(FAILED(hr))) {
  32     return nullptr;
  33   }
  34
  35   ComPtr<IInputPane> inputPane;
  36   hr = inputPaneInterop->GetForWindow(aHwnd, IID_PPV_ARGS(&inputPane));
  37   if (NS_WARN_IF(FAILED(hr))) {
  38     return nullptr;
  39   }
  40
  41   ComPtr<IInputPane2> inputPane2;
  42   inputPane.As(&inputPane2);
  43   return inputPane2;
  44 }
  45
  46 #  ifdef DEBUG
  47 static bool IsInputPaneVisible(ComPtr<IInputPane2>& aInputPane2) {
  48   ComPtr<IInputPaneControl> inputPaneControl;
  49   aInputPane2.As(&inputPaneControl);
  50   if (NS_WARN_IF(!inputPaneControl)) {
  51     return false;
  52   }
  53   boolean visible = false;
  54   inputPaneControl->get_Visible(&visible);
  55   return visible;
  56 }
  57
  58 static bool IsForegroundApp() {
  59   HWND foregroundWnd = ::GetForegroundWindow();
  60   if (!foregroundWnd) {
  61     return false;
  62   }
  63   DWORD pid;
  64   ::GetWindowThreadProcessId(foregroundWnd, &pid);
  65   return pid == ::GetCurrentProcessId();
  66 }
  67 #  endif
  68 #endif
  69
  70 // static
  71 void OSKInputPaneManager::ShowOnScreenKeyboard(HWND aWnd) {
  72 #ifndef __MINGW32__
  73   ComPtr<IInputPane2> inputPane2 = GetInputPane(aWnd);
  74   if (!inputPane2) {
  75     return;
  76   }
  77   boolean result;
  78   inputPane2->TryShow(&result);
  79   NS_WARNING_ASSERTION(
  80       result || !IsForegroundApp() || IsInputPaneVisible(inputPane2),
  81       "IInputPane2::TryShow is failure");
  82 #endif
  83 }
  84
  85 // static
  86 void OSKInputPaneManager::DismissOnScreenKeyboard(HWND aWnd) {
  87 #ifndef __MINGW32__
  88   ComPtr<IInputPane2> inputPane2 = GetInputPane(aWnd);
  89   if (!inputPane2) {
  90     return;
  91   }
  92   boolean result;
  93   inputPane2->TryHide(&result);
  94   NS_WARNING_ASSERTION(
  95       result || !IsForegroundApp() || !IsInputPaneVisible(inputPane2),
  96       "IInputPane2::TryHide is failure");
  97 #endif
  98 }
  99
 100 }  // namespace widget
 101 }  // namespace mozilla