gecko-dev/widget/windows/nsToolkit.cpp

209 lines
5.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsToolkit.h"
#include "nsAppShell.h"
#include "nsWindow.h"
#include "nsWidgetsCID.h"
#include "prmon.h"
#include "prtime.h"
#include "nsIServiceManager.h"
#include "nsComponentManagerUtils.h"
#include <objbase.h>
#include "WinUtils.h"
#include "nsUXThemeData.h"
// unknwn.h is needed to build with WIN32_LEAN_AND_MEAN
#include <unknwn.h>
using namespace mozilla::widget;
nsToolkit* nsToolkit::gToolkit = nullptr;
HINSTANCE nsToolkit::mDllInstance = 0;
MouseTrailer* nsToolkit::gMouseTrailer;
//-------------------------------------------------------------------------
//
// constructor
//
//-------------------------------------------------------------------------
nsToolkit::nsToolkit()
{
MOZ_COUNT_CTOR(nsToolkit);
#if defined(MOZ_STATIC_COMPONENT_LIBS)
nsToolkit::Startup(GetModuleHandle(nullptr));
#endif
gMouseTrailer = &mMouseTrailer;
}
//-------------------------------------------------------------------------
//
// destructor
//
//-------------------------------------------------------------------------
nsToolkit::~nsToolkit()
{
MOZ_COUNT_DTOR(nsToolkit);
gMouseTrailer = nullptr;
}
void
nsToolkit::Startup(HMODULE hModule)
{
nsToolkit::mDllInstance = hModule;
WinUtils::Initialize();
nsUXThemeData::Initialize();
}
void
nsToolkit::Shutdown()
{
delete gToolkit;
gToolkit = nullptr;
}
//-------------------------------------------------------------------------
//
// Return the nsToolkit for the current thread. If a toolkit does not
// yet exist, then one will be created...
//
//-------------------------------------------------------------------------
// static
nsToolkit* nsToolkit::GetToolkit()
{
if (!gToolkit) {
gToolkit = new nsToolkit();
}
return gToolkit;
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
MouseTrailer::MouseTrailer() : mMouseTrailerWindow(nullptr), mCaptureWindow(nullptr),
mIsInCaptureMode(false), mEnabled(true)
{
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
MouseTrailer::~MouseTrailer()
{
DestroyTimer();
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
void MouseTrailer::SetMouseTrailerWindow(HWND aWnd)
{
if (mMouseTrailerWindow != aWnd && mTimer) {
// Make sure TimerProc is fired at least once for the old window
TimerProc(nullptr, nullptr);
}
mMouseTrailerWindow = aWnd;
CreateTimer();
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
void MouseTrailer::SetCaptureWindow(HWND aWnd)
{
mCaptureWindow = aWnd;
if (mCaptureWindow) {
mIsInCaptureMode = true;
}
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
nsresult MouseTrailer::CreateTimer()
{
if (mTimer || !mEnabled) {
return NS_OK;
}
nsresult rv;
mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
return mTimer->InitWithFuncCallback(TimerProc, nullptr, 200,
nsITimer::TYPE_REPEATING_SLACK);
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
void MouseTrailer::DestroyTimer()
{
if (mTimer) {
mTimer->Cancel();
mTimer = nullptr;
}
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
void MouseTrailer::TimerProc(nsITimer* aTimer, void* aClosure)
{
MouseTrailer *mtrailer = nsToolkit::gMouseTrailer;
NS_ASSERTION(mtrailer, "MouseTrailer still firing after deletion!");
// Check to see if we are in mouse capture mode,
// Once capture ends we could still get back one more timer event.
// Capture could end outside our window.
// Also, for some reason when the mouse is on the frame it thinks that
// it is inside the window that is being captured.
if (mtrailer->mCaptureWindow) {
if (mtrailer->mCaptureWindow != mtrailer->mMouseTrailerWindow) {
return;
}
} else {
if (mtrailer->mIsInCaptureMode) {
// mMouseTrailerWindow could be bad from rolling over the frame, so clear
// it if we were capturing and now this is the first timer callback
// since we canceled the capture
mtrailer->mMouseTrailerWindow = nullptr;
mtrailer->mIsInCaptureMode = false;
return;
}
}
if (mtrailer->mMouseTrailerWindow && ::IsWindow(mtrailer->mMouseTrailerWindow)) {
POINT mp;
DWORD pos = ::GetMessagePos();
mp.x = GET_X_LPARAM(pos);
mp.y = GET_Y_LPARAM(pos);
HWND mouseWnd = ::WindowFromPoint(mp);
if (mtrailer->mMouseTrailerWindow != mouseWnd) {
// Notify someone that a mouse exit happened.
PostMessage(mtrailer->mMouseTrailerWindow, WM_MOUSELEAVE, 0, 0);
// we are out of this window, destroy timer
mtrailer->DestroyTimer();
mtrailer->mMouseTrailerWindow = nullptr;
}
} else {
mtrailer->DestroyTimer();
mtrailer->mMouseTrailerWindow = nullptr;
}
}