widget/windows/nsToolkit.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsToolkit.h"
   7 #include "nsAppShell.h"
   8 #include "nsWindow.h"
   9 #include "nsWidgetsCID.h"
  10 #include "prmon.h"
  11 #include "prtime.h"
  12 #include "nsIServiceManager.h"
  13 #include "nsComponentManagerUtils.h"
  14 #include <objbase.h>
  15 #include "WinUtils.h"
  16
  17 #include "nsUXThemeData.h"
  18
  19 // unknwn.h is needed to build with WIN32_LEAN_AND_MEAN
  20 #include <unknwn.h>
  21
  22 using namespace mozilla::widget;
  23
  24 nsToolkit* nsToolkit::gToolkit = nullptr;
  25 HINSTANCE nsToolkit::mDllInstance = 0;
  26 static const unsigned long kD3DUsageDelay = 5000;
  27
  28 static void
  29 StartAllowingD3D9(nsITimer *aTimer, void *aClosure)
  30 {
  31   if (XRE_GetWindowsEnvironment() == WindowsEnvironmentType_Desktop) {
  32     nsWindow::StartAllowingD3D9(true);
  33   }
  34 }
  35
  36 MouseTrailer*       nsToolkit::gMouseTrailer;
  37
  38 //-------------------------------------------------------------------------
  39 //
  40 // constructor
  41 //
  42 //-------------------------------------------------------------------------
  43 nsToolkit::nsToolkit()
  44 {
  45     MOZ_COUNT_CTOR(nsToolkit);
  46
  47 #if defined(MOZ_STATIC_COMPONENT_LIBS)
  48     nsToolkit::Startup(GetModuleHandle(nullptr));
  49 #endif
  50
  51     gMouseTrailer = &mMouseTrailer;
  52
  53     if (XRE_GetWindowsEnvironment() == WindowsEnvironmentType_Desktop) {
  54       mD3D9Timer = do_CreateInstance("@mozilla.org/timer;1");
  55       mD3D9Timer->InitWithFuncCallback(::StartAllowingD3D9,
  56                                        nullptr,
  57                                        kD3DUsageDelay,
  58                                        nsITimer::TYPE_ONE_SHOT);
  59     }
  60 }
  61
  62
  63 //-------------------------------------------------------------------------
  64 //
  65 // destructor
  66 //
  67 //-------------------------------------------------------------------------
  68 nsToolkit::~nsToolkit()
  69 {
  70     MOZ_COUNT_DTOR(nsToolkit);
  71     gMouseTrailer = nullptr;
  72 }
  73
  74 void
  75 nsToolkit::Startup(HMODULE hModule)
  76 {
  77     nsToolkit::mDllInstance = hModule;
  78     WinUtils::Initialize();
  79     nsUXThemeData::Initialize();
  80 }
  81
  82 void
  83 nsToolkit::Shutdown()
  84 {
  85     delete gToolkit;
  86     gToolkit = nullptr;
  87 }
  88
  89 void
  90 nsToolkit::StartAllowingD3D9()
  91 {
  92   if (XRE_GetWindowsEnvironment() == WindowsEnvironmentType_Desktop) {
  93     nsToolkit::GetToolkit()->mD3D9Timer->Cancel();
  94     nsWindow::StartAllowingD3D9(false);
  95   }
  96 }
  97
  98 //-------------------------------------------------------------------------
  99 //
 100 // Return the nsToolkit for the current thread.  If a toolkit does not
 101 // yet exist, then one will be created...
 102 //
 103 //-------------------------------------------------------------------------
 104 // static
 105 nsToolkit* nsToolkit::GetToolkit()
 106 {
 107   if (!gToolkit) {
 108     gToolkit = new nsToolkit();
 109   }
 110
 111   return gToolkit;
 112 }
 113
 114
 115 //-------------------------------------------------------------------------
 116 //
 117 //
 118 //-------------------------------------------------------------------------
 119 MouseTrailer::MouseTrailer() : mMouseTrailerWindow(nullptr), mCaptureWindow(nullptr),
 120   mIsInCaptureMode(false), mEnabled(true)
 121 {
 122 }
 123 //-------------------------------------------------------------------------
 124 //
 125 //
 126 //-------------------------------------------------------------------------
 127 MouseTrailer::~MouseTrailer()
 128 {
 129   DestroyTimer();
 130 }
 131 //-------------------------------------------------------------------------
 132 //
 133 //
 134 //-------------------------------------------------------------------------
 135 void MouseTrailer::SetMouseTrailerWindow(HWND aWnd)
 136 {
 137   if (mMouseTrailerWindow != aWnd && mTimer) {
 138     // Make sure TimerProc is fired at least once for the old window
 139     TimerProc(nullptr, nullptr);
 140   }
 141   mMouseTrailerWindow = aWnd;
 142   CreateTimer();
 143 }
 144
 145 //-------------------------------------------------------------------------
 146 //
 147 //
 148 //-------------------------------------------------------------------------
 149 void MouseTrailer::SetCaptureWindow(HWND aWnd)
 150 {
 151   mCaptureWindow = aWnd;
 152   if (mCaptureWindow) {
 153     mIsInCaptureMode = true;
 154   }
 155 }
 156
 157 //-------------------------------------------------------------------------
 158 //
 159 //
 160 //-------------------------------------------------------------------------
 161 nsresult MouseTrailer::CreateTimer()
 162 {
 163   if (mTimer || !mEnabled) {
 164     return NS_OK;
 165   }
 166
 167   nsresult rv;
 168   mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
 169   NS_ENSURE_SUCCESS(rv, rv);
 170
 171   return mTimer->InitWithFuncCallback(TimerProc, nullptr, 200,
 172                                       nsITimer::TYPE_REPEATING_SLACK);
 173 }
 174
 175 //-------------------------------------------------------------------------
 176 //
 177 //
 178 //-------------------------------------------------------------------------
 179 void MouseTrailer::DestroyTimer()
 180 {
 181   if (mTimer) {
 182     mTimer->Cancel();
 183     mTimer = nullptr;
 184   }
 185 }
 186
 187 //-------------------------------------------------------------------------
 188 //
 189 //
 190 //-------------------------------------------------------------------------
 191 void MouseTrailer::TimerProc(nsITimer* aTimer, void* aClosure)
 192 {
 193   MouseTrailer *mtrailer = nsToolkit::gMouseTrailer;
 194   NS_ASSERTION(mtrailer, "MouseTrailer still firing after deletion!");
 195
 196   // Check to see if we are in mouse capture mode,
 197   // Once capture ends we could still get back one more timer event.
 198   // Capture could end outside our window.
 199   // Also, for some reason when the mouse is on the frame it thinks that
 200   // it is inside the window that is being captured.
 201   if (mtrailer->mCaptureWindow) {
 202     if (mtrailer->mCaptureWindow != mtrailer->mMouseTrailerWindow) {
 203       return;
 204     }
 205   } else {
 206     if (mtrailer->mIsInCaptureMode) {
 207       // mMouseTrailerWindow could be bad from rolling over the frame, so clear
 208       // it if we were capturing and now this is the first timer callback
 209       // since we canceled the capture
 210       mtrailer->mMouseTrailerWindow = nullptr;
 211       mtrailer->mIsInCaptureMode = false;
 212       return;
 213     }
 214   }
 215
 216   if (mtrailer->mMouseTrailerWindow && ::IsWindow(mtrailer->mMouseTrailerWindow)) {
 217     POINT mp;
 218     DWORD pos = ::GetMessagePos();
 219     mp.x = GET_X_LPARAM(pos);
 220     mp.y = GET_Y_LPARAM(pos);
 221     HWND mouseWnd = ::WindowFromPoint(mp);
 222     if (mtrailer->mMouseTrailerWindow != mouseWnd) {
 223       // Notify someone that a mouse exit happened.
 224       PostMessage(mtrailer->mMouseTrailerWindow, WM_MOUSELEAVE, 0, 0);
 225
 226       // we are out of this window, destroy timer
 227       mtrailer->DestroyTimer();
 228       mtrailer->mMouseTrailerWindow = nullptr;
 229     }
 230   } else {
 231     mtrailer->DestroyTimer();
 232     mtrailer->mMouseTrailerWindow = nullptr;
 233   }
 234 }
 235