barrier/lib/platform/CMSWindowsScreen.h

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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef CMSWINDOWSSCREEN_H
#define CMSWINDOWSSCREEN_H
#include "CPlatformScreen.h"
#include "CSynergyHook.h"
#include "CCondVar.h"
#include "CMutex.h"
#include "CString.h"
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
class CEventQueueTimer;
class CMSWindowsDesks;
class CMSWindowsKeyState;
class CMSWindowsScreenSaver;
class CThread;
//! Implementation of IPlatformScreen for Microsoft Windows
class CMSWindowsScreen : public CPlatformScreen {
public:
CMSWindowsScreen(bool isPrimary, bool noHooks);
virtual ~CMSWindowsScreen();
//! @name manipulators
//@{
//! Initialize
/*!
Saves the application's HINSTANCE. This \b must be called by
WinMain with the HINSTANCE it was passed.
*/
static void init(HINSTANCE);
//@}
//! @name accessors
//@{
//! Get instance
/*!
Returns the application instance handle passed to init().
*/
static HINSTANCE getInstance();
//@}
// IScreen overrides
virtual void* getEventTarget() const;
virtual bool getClipboard(ClipboardID id, IClipboard*) const;
virtual void getShape(SInt32& x, SInt32& y,
SInt32& width, SInt32& height) const;
virtual void getCursorPos(SInt32& x, SInt32& y) const;
// IPrimaryScreen overrides
virtual void reconfigure(UInt32 activeSides);
virtual void warpCursor(SInt32 x, SInt32 y);
virtual UInt32 registerHotKey(KeyID key,
KeyModifierMask mask);
virtual void unregisterHotKey(UInt32 id);
virtual void fakeInputBegin();
virtual void fakeInputEnd();
virtual SInt32 getJumpZoneSize() const;
virtual bool isAnyMouseButtonDown() const;
virtual void getCursorCenter(SInt32& x, SInt32& y) const;
// ISecondaryScreen overrides
virtual void fakeMouseButton(ButtonID id, bool press) const;
virtual void fakeMouseMove(SInt32 x, SInt32 y) const;
virtual void fakeMouseRelativeMove(SInt32 dx, SInt32 dy) const;
virtual void fakeMouseWheel(SInt32 xDelta, SInt32 yDelta) const;
// IKeyState overrides
virtual void updateKeys();
virtual void fakeKeyDown(KeyID id, KeyModifierMask mask,
KeyButton button);
virtual void fakeKeyRepeat(KeyID id, KeyModifierMask mask,
SInt32 count, KeyButton button);
virtual void fakeKeyUp(KeyButton button);
virtual void fakeAllKeysUp();
// IPlatformScreen overrides
virtual void enable();
virtual void disable();
virtual void enter();
virtual bool leave();
virtual bool setClipboard(ClipboardID, const IClipboard*);
virtual void checkClipboards();
virtual void openScreensaver(bool notify);
virtual void closeScreensaver();
virtual void screensaver(bool activate);
virtual void resetOptions();
virtual void setOptions(const COptionsList& options);
virtual void setSequenceNumber(UInt32);
virtual bool isPrimary() const;
protected:
// IPlatformScreen overrides
virtual void handleSystemEvent(const CEvent&, void*);
virtual void updateButtons();
virtual IKeyState* getKeyState() const;
private:
// initialization and shutdown operations
HINSTANCE openHookLibrary(const char* name);
void closeHookLibrary(HINSTANCE hookLibrary) const;
HCURSOR createBlankCursor() const;
void destroyCursor(HCURSOR cursor) const;
ATOM createWindowClass() const;
ATOM createDeskWindowClass(bool isPrimary) const;
void destroyClass(ATOM windowClass) const;
HWND createWindow(ATOM windowClass, const char* name) const;
void destroyWindow(HWND) const;
// convenience function to send events
void sendEvent(CEvent::Type type, void* = NULL);
void sendClipboardEvent(CEvent::Type type, ClipboardID id);
// handle message before it gets dispatched. returns true iff
// the message should not be dispatched.
bool onPreDispatch(HWND, UINT, WPARAM, LPARAM);
// handle message before it gets dispatched. returns true iff
// the message should not be dispatched.
bool onPreDispatchPrimary(HWND, UINT, WPARAM, LPARAM);
// handle message. returns true iff handled and optionally sets
// \c *result (which defaults to 0).
bool onEvent(HWND, UINT, WPARAM, LPARAM, LRESULT* result);
// message handlers
bool onMark(UInt32 mark);
bool onKey(WPARAM, LPARAM);
bool onHotKey(WPARAM, LPARAM);
bool onMouseButton(WPARAM, LPARAM);
bool onMouseMove(SInt32 x, SInt32 y);
bool onMouseWheel(SInt32 xDelta, SInt32 yDelta);
bool onScreensaver(bool activated);
bool onDisplayChange();
bool onClipboardChange();
// warp cursor without discarding queued events
void warpCursorNoFlush(SInt32 x, SInt32 y);
// discard posted messages
void nextMark();
// test if event should be ignored
bool ignore() const;
// update screen size cache
void updateScreenShape();
// fix timer callback
void handleFixes(const CEvent&, void*);
// fix the clipboard viewer chain
void fixClipboardViewer();
// enable/disable special key combinations so we can catch/pass them
void enableSpecialKeys(bool) const;
// map a button event to a button ID
ButtonID mapButtonFromEvent(WPARAM msg, LPARAM button) const;
// map a button event to a press (true) or release (false)
bool mapPressFromEvent(WPARAM msg, LPARAM button) const;
// job to update the key state
void updateKeysCB(void*);
// determine whether the mouse is hidden by the system and force
// it to be displayed if user has entered this secondary screen.
void forceShowCursor();
// forceShowCursor uses MouseKeys to show the cursor. since we
// don't actually want MouseKeys behavior we have to make sure
// it applies when NumLock is in whatever state it's not in now.
// this method does that.
void updateForceShowCursor();
// our window proc
static LRESULT CALLBACK wndProc(HWND, UINT, WPARAM, LPARAM);
private:
struct CHotKeyItem {
public:
CHotKeyItem(UINT vk, UINT modifiers);
UINT getVirtualKey() const;
bool operator<(const CHotKeyItem&) const;
private:
UINT m_keycode;
UINT m_mask;
};
typedef std::map<UInt32, CHotKeyItem> HotKeyMap;
typedef std::vector<UInt32> HotKeyIDList;
typedef std::map<CHotKeyItem, UInt32> HotKeyToIDMap;
static HINSTANCE s_instance;
// true if screen is being used as a primary screen, false otherwise
bool m_isPrimary;
// true if hooks are not to be installed (useful for debugging)
bool m_noHooks;
// true if windows 95/98/me
bool m_is95Family;
// true if mouse has entered the screen
bool m_isOnScreen;
// our resources
ATOM m_class;
// screen shape stuff
SInt32 m_x, m_y;
SInt32 m_w, m_h;
SInt32 m_xCenter, m_yCenter;
// true if system appears to have multiple monitors
bool m_multimon;
// last mouse position
SInt32 m_xCursor, m_yCursor;
// last clipboard
UInt32 m_sequenceNumber;
// used to discard queued messages that are no longer needed
UInt32 m_mark;
UInt32 m_markReceived;
// the main loop's thread id
DWORD m_threadID;
// timer for periodically checking stuff that requires polling
CEventQueueTimer* m_fixTimer;
// the keyboard layout to use when off primary screen
HKL m_keyLayout;
// screen saver stuff
CMSWindowsScreenSaver* m_screensaver;
bool m_screensaverNotify;
bool m_screensaverActive;
// clipboard stuff. our window is used mainly as a clipboard
// owner and as a link in the clipboard viewer chain.
HWND m_window;
HWND m_nextClipboardWindow;
bool m_ownClipboard;
// one desk per desktop and a cond var to communicate with it
CMSWindowsDesks* m_desks;
// hook library stuff
HINSTANCE m_hookLibrary;
InitFunc m_init;
CleanupFunc m_cleanup;
SetSidesFunc m_setSides;
SetZoneFunc m_setZone;
SetModeFunc m_setMode;
// keyboard stuff
CMSWindowsKeyState* m_keyState;
// hot key stuff
HotKeyMap m_hotKeys;
HotKeyIDList m_oldHotKeyIDs;
HotKeyToIDMap m_hotKeyToIDMap;
// map of button state
bool m_buttons[1 + kButtonExtra0 + 1];
// the system shows the mouse cursor when an internal display count
// is >= 0. this count is maintained per application but there's
// apparently a system wide count added to the application's count.
// this system count is 0 if there's a mouse attached to the system
// and -1 otherwise. the MouseKeys accessibility feature can modify
// this system count by making the system appear to have a mouse.
//
// m_hasMouse is true iff there's a mouse attached to the system or
// MouseKeys is simulating one. we track this so we can force the
// cursor to be displayed when the user has entered this screen.
// m_showingMouse is true when we're doing that.
bool m_hasMouse;
bool m_showingMouse;
bool m_gotOldMouseKeys;
MOUSEKEYS m_mouseKeys;
MOUSEKEYS m_oldMouseKeys;
static CMSWindowsScreen* s_screen;
// save last position of mouse to compute next delta movement
void saveMousePosition(SInt32 x, SInt32 y);
};
#endif