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77ffb5937e89927b621128789401db8921fe580f
wxWidgets/src/unix/utilsx11.cpp
Julian Smart 77ffb5937e Name and version changes 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27404 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2004-05-23 14:56:36 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/unix/utilsx11.cpp
// Purpose: Miscellaneous X11 functions
// Author: Mattia Barbon, Vaclav Slavik, Robert Roebling
// Modified by:
// Created: 25.03.02
// RCS-ID: $Id$
// Copyright: (c) wxWidgets team
// Licence: wxWidgets licence
/////////////////////////////////////////////////////////////////////////////
#if defined(__WXX11__) || defined(__WXGTK__) || defined(__WXMOTIF__)
// for compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/unix/utilsx11.h"
#include "wx/iconbndl.h"
#include "wx/image.h"
#include "wx/icon.h"
#include "wx/log.h"
#ifdef __VMS
#pragma message disable nosimpint
#endif
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#ifdef __VMS
#pragma message enable nosimpint
#endif
#ifdef __WXGTK20__
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#endif
// Various X11 Atoms used in this file:
static Atom _NET_WM_ICON = 0;
static Atom _NET_WM_STATE = 0;
static Atom _NET_WM_STATE_FULLSCREEN = 0;
static Atom _NET_WM_STATE_STAYS_ON_TOP = 0;
static Atom _NET_WM_WINDOW_TYPE = 0;
static Atom _NET_WM_WINDOW_TYPE_NORMAL = 0;
static Atom _KDE_NET_WM_WINDOW_TYPE_OVERRIDE = 0;
static Atom _WIN_LAYER = 0;
static Atom KWIN_RUNNING = 0;
#ifndef __WXGTK20__
static Atom _NET_SUPPORTING_WM_CHECK = 0;
static Atom _NET_SUPPORTED = 0;
#endif
#define wxMAKE_ATOM(name, display) \
if (name == 0) name = XInternAtom((display), #name, False)
// Is the window mapped?
static bool IsMapped(Display *display, Window window)
{
XWindowAttributes attr;
XGetWindowAttributes(display, window, &attr);
return (attr.map_state != IsUnmapped);
}
// Suspends X11 errors. Used when we expect errors but they are not fatal
// for us.
class wxX11ErrorsSuspender
{
public:
wxX11ErrorsSuspender(Display *d) : m_display(d)
{
m_old = XSetErrorHandler(handler);
}
~wxX11ErrorsSuspender()
{
XFlush(m_display);
XSetErrorHandler(m_old);
}
private:
Display *m_display;
int (*m_old)(Display*, XErrorEvent *);
static int handler(Display *, XErrorEvent *) { return 0; }
};
// ----------------------------------------------------------------------------
// Setting icons for window manager:
// ----------------------------------------------------------------------------
void wxSetIconsX11( WXDisplay* display, WXWindow window,
const wxIconBundle& ib )
{
#if !wxUSE_NANOX
size_t size = 0;
size_t i, max = ib.m_icons.GetCount();
for( i = 0; i < max; ++i )
if( ib.m_icons[i].Ok() )
size += 2 + ib.m_icons[i].GetWidth() * ib.m_icons[i].GetHeight();
wxMAKE_ATOM(_NET_WM_ICON, (Display*)display);
if( size > 0 )
{
// The code below is correct for 64-bit machines also.
// wxUint32* data = new wxUint32[size];
// wxUint32* ptr = data;
unsigned long* data = new unsigned long[size];
unsigned long* ptr = data;
for( i = 0; i < max; ++i )
{
const wxImage image = ib.m_icons[i].ConvertToImage();
int width = image.GetWidth(), height = image.GetHeight();
unsigned char* imageData = image.GetData();
unsigned char* imageDataEnd = imageData + ( width * height * 3 );
bool hasMask = image.HasMask();
unsigned char rMask, gMask, bMask;
unsigned char r, g, b, a;
if( hasMask )
{
rMask = image.GetMaskRed();
gMask = image.GetMaskGreen();
bMask = image.GetMaskBlue();
}
else // no mask, but still init the variables to avoid warnings
{
rMask =
gMask =
bMask = 0;
}
*ptr++ = width;
*ptr++ = height;
while( imageData < imageDataEnd ) {
r = imageData[0];
g = imageData[1];
b = imageData[2];
if( hasMask && r == rMask && g == gMask && b == bMask )
a = 0;
else
a = 255;
*ptr++ = ( a << 24 ) | ( r << 16 ) | ( g << 8 ) | b;
imageData += 3;
}
}
XChangeProperty( (Display*)display,
(Window)window,
_NET_WM_ICON,
XA_CARDINAL, 32,
PropModeReplace,
(unsigned char*)data, size );
delete[] data;
}
else
{
XDeleteProperty( (Display*)display,
(Window)window,
_NET_WM_ICON );
}
#endif
}
// ----------------------------------------------------------------------------
// Fullscreen mode:
// ----------------------------------------------------------------------------
// NB: Setting fullscreen mode under X11 is a complicated matter. There was
// no standard way of doing it until recently. ICCCM doesn't know the
// concept of fullscreen windows and the only way to make a window
// fullscreen is to remove decorations, resize it to cover entire screen
// and set WIN_LAYER_ABOVE_DOCK.
//
// This doesn't always work, though. Specifically, at least kwin from
// KDE 3 ignores the hint. The only way to make kwin accept our request
// is to emulate the way Qt does it. That is, unmap the window, set
// _NET_WM_WINDOW_TYPE to _KDE_NET_WM_WINDOW_TYPE_OVERRIDE (KDE extension),
// add _NET_WM_STATE_STAYS_ON_TOP (ditto) to _NET_WM_STATE and map
// the window again.
//
// Version 1.2 of Window Manager Specification (aka wm-spec aka
// Extended Window Manager Hints) introduced _NET_WM_STATE_FULLSCREEN
// window state which provides cleanest and simplest possible way of
// making a window fullscreen. WM-spec is a de-facto standard adopted
// by GNOME and KDE folks, but _NET_WM_STATE_FULLSCREEN isn't yet widely
// supported. As of January 2003, only GNOME 2's default WM Metacity
// implements, KDE will support it from version 3.2. At toolkits level,
// GTK+ >= 2.1.2 uses it as the only method of making windows fullscreen
// (that's why wxGTK will *not* switch to using gtk_window_fullscreen
// unless it has better compatiblity with older WMs).
//
//
// This is what wxWidgets does in wxSetFullScreenStateX11:
// 1) if _NET_WM_STATE_FULLSCREEN is supported, use it
// 2) otherwise try WM-specific hacks (KDE, IceWM)
// 3) use _WIN_LAYER and hope that the WM will recognize it
// The code was tested with:
// twm, IceWM, WindowMaker, Metacity, kwin, sawfish, lesstif-mwm
#define WIN_LAYER_NORMAL 4
#define WIN_LAYER_ABOVE_DOCK 10
static void wxWinHintsSetLayer(Display *display, Window rootWnd,
Window window, int layer)
{
wxX11ErrorsSuspender noerrors(display);
XEvent xev;
wxMAKE_ATOM( _WIN_LAYER, display );
if (IsMapped(display, window))
{
xev.type = ClientMessage;
xev.xclient.type = ClientMessage;
xev.xclient.window = window;
xev.xclient.message_type = _WIN_LAYER;
xev.xclient.format = 32;
xev.xclient.data.l[0] = (long)layer;
xev.xclient.data.l[1] = CurrentTime;
XSendEvent(display, rootWnd, False,
SubstructureNotifyMask, (XEvent*) &xev);
}
else
{
long data[1];
data[0] = layer;
XChangeProperty(display, window,
_WIN_LAYER, XA_CARDINAL, 32,
PropModeReplace, (unsigned char *)data, 1);
}
}
#ifdef __WXGTK20__
static bool wxQueryWMspecSupport(Display* WXUNUSED(display),
Window WXUNUSED(rootWnd),
Atom (feature))
{
GdkAtom gatom = gdk_x11_xatom_to_atom(feature);
return gdk_net_wm_supports(gatom);
}
#else
static bool wxQueryWMspecSupport(Display *display, Window rootWnd, Atom feature)
{
wxMAKE_ATOM(_NET_SUPPORTING_WM_CHECK, display);
wxMAKE_ATOM(_NET_SUPPORTED, display);
// FIXME: We may want to cache these checks. Note that we can't simply
// remember the results in global variable because the WM may go
// away and be replaced by another one! One possible approach
// would be invalidate the case every 15 seconds or so. Since this
// code is currently only used by wxTopLevelWindow::ShowFullScreen,
// it is not important that it is not optimized.
//
// If the WM supports ICCCM (i.e. the root window has
// _NET_SUPPORTING_WM_CHECK property that points to a WM-owned
// window), we could watch for DestroyNotify event on the window
// and invalidate our cache when the windows goes away (= WM
// is replaced by another one). This is what GTK+ 2 does.
// Let's do it only if it is needed, it requires changes to
// the event loop.
Atom type;
Window *wins;
Atom *atoms;
int format;
unsigned long after;
unsigned long nwins, natoms;
// Is the WM ICCCM supporting?
XGetWindowProperty(display, rootWnd,
_NET_SUPPORTING_WM_CHECK, 0, LONG_MAX,
False, XA_WINDOW, &type, &format, &nwins,
&after, (unsigned char **)&wins);
if ( type != XA_WINDOW || nwins <= 0 || wins[0] == None )
return FALSE;
XFree(wins);
// Query for supported features:
XGetWindowProperty(display, rootWnd,
_NET_SUPPORTED, 0, LONG_MAX,
False, XA_ATOM, &type, &format, &natoms,
&after, (unsigned char **)&atoms);
if ( type != XA_ATOM || atoms == NULL )
return FALSE;
// Lookup the feature we want:
for (unsigned i = 0; i < natoms; i++)
{
if ( atoms[i] == feature )
{
XFree(atoms);
return TRUE;
}
}
XFree(atoms);
return FALSE;
}
#endif
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
static void wxWMspecSetState(Display *display, Window rootWnd,
Window window, int operation, Atom state)
{
wxMAKE_ATOM(_NET_WM_STATE, display);
if ( IsMapped(display, window) )
{
XEvent xev;
xev.type = ClientMessage;
xev.xclient.type = ClientMessage;
xev.xclient.serial = 0;
xev.xclient.send_event = True;
xev.xclient.display = display;
xev.xclient.window = window;
xev.xclient.message_type = _NET_WM_STATE;
xev.xclient.format = 32;
xev.xclient.data.l[0] = operation;
xev.xclient.data.l[1] = state;
xev.xclient.data.l[2] = None;
XSendEvent(display, rootWnd,
False,
SubstructureRedirectMask | SubstructureNotifyMask,
&xev);
}
// FIXME - must modify _NET_WM_STATE property list if the window
// wasn't mapped!
}
static void wxWMspecSetFullscreen(Display *display, Window rootWnd,
Window window, bool fullscreen)
{
wxMAKE_ATOM(_NET_WM_STATE_FULLSCREEN, display);
wxWMspecSetState(display, rootWnd,
window,
fullscreen ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE,
_NET_WM_STATE_FULLSCREEN);
}
// Is the user running KDE's kwin window manager? At least kwin from KDE 3
// sets KWIN_RUNNING property on the root window.
static bool wxKwinRunning(Display *display, Window rootWnd)
{
wxMAKE_ATOM(KWIN_RUNNING, display);
long *data;
Atom type;
int format;
unsigned long nitems, after;
if (XGetWindowProperty(display, rootWnd,
KWIN_RUNNING, 0, 1, False, KWIN_RUNNING,
&type, &format, &nitems, &after,
(unsigned char**)&data) != Success)
{
return FALSE;
}
bool retval = (type == KWIN_RUNNING &&
nitems == 1 && data && data[0] == 1);
XFree(data);
return retval;
}
// KDE's kwin is Qt-centric so much than no normal method of fullscreen
// mode will work with it. We have to carefully emulate the Qt way.
static void wxSetKDEFullscreen(Display *display, Window rootWnd,
Window w, bool fullscreen, wxRect *origRect)
{
long data[2];
unsigned lng;
wxMAKE_ATOM(_NET_WM_WINDOW_TYPE, display);
wxMAKE_ATOM(_NET_WM_WINDOW_TYPE_NORMAL, display);
wxMAKE_ATOM(_KDE_NET_WM_WINDOW_TYPE_OVERRIDE, display);
wxMAKE_ATOM(_NET_WM_STATE_STAYS_ON_TOP, display);
if (fullscreen)
{
data[0] = _KDE_NET_WM_WINDOW_TYPE_OVERRIDE;
data[1] = _NET_WM_WINDOW_TYPE_NORMAL;
lng = 2;
}
else
{
data[0] = _NET_WM_WINDOW_TYPE_NORMAL;
data[1] = None;
lng = 1;
}
// it is neccessary to unmap the window, otherwise kwin will ignore us:
XSync(display, False);
bool wasMapped = IsMapped(display, w);
if (wasMapped)
{
XUnmapWindow(display, w);
XSync(display, False);
}
XChangeProperty(display, w, _NET_WM_WINDOW_TYPE, XA_ATOM, 32,
PropModeReplace, (unsigned char *) &data, lng);
XSync(display, False);
if (wasMapped)
{
XMapRaised(display, w);
XSync(display, False);
}
wxWMspecSetState(display, rootWnd, w,
fullscreen ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE,
_NET_WM_STATE_STAYS_ON_TOP);
XSync(display, False);
if (!fullscreen)
{
// NB: like many other WMs, kwin ignores first request for window
// position change after the window was mapped. This additional
// move+resize event will ensure that the window is restored in
// exactly same position as before it was made fullscreen (because
// wxTopLevelWindow::ShowFullScreen will call SetSize, thus
// setting the position for second time).
XMoveResizeWindow(display, w,
origRect->x, origRect->y,
origRect->width, origRect->height);
XSync(display, False);
}
}
wxX11FullScreenMethod wxGetFullScreenMethodX11(WXDisplay* display,
WXWindow rootWindow)
{
Window root = (Window)rootWindow;
Display *disp = (Display*)display;
// if WM supports _NET_WM_STATE_FULLSCREEN from wm-spec 1.2, use it:
wxMAKE_ATOM(_NET_WM_STATE_FULLSCREEN, disp);
if (wxQueryWMspecSupport(disp, root, _NET_WM_STATE_FULLSCREEN))
{
wxLogTrace(_T("fullscreen"),
_T("detected _NET_WM_STATE_FULLSCREEN support"));
return wxX11_FS_WMSPEC;
}
// if the user is running KDE's kwin WM, use a legacy hack because
// kwin doesn't understand any other method:
if (wxKwinRunning(disp, root))
{
wxLogTrace(_T("fullscreen"), _T("detected kwin"));
return wxX11_FS_KDE;
}
// finally, fall back to ICCCM heuristic method:
wxLogTrace(_T("fullscreen"), _T("unknown WM, using _WIN_LAYER"));
return wxX11_FS_GENERIC;
}
void wxSetFullScreenStateX11(WXDisplay* display, WXWindow rootWindow,
WXWindow window, bool show,
wxRect *origRect,
wxX11FullScreenMethod method)
{
// NB: please see the comment under "Fullscreen mode:" title above
// for implications of changing this code.
Window wnd = (Window)window;
Window root = (Window)rootWindow;
Display *disp = (Display*)display;
if (method == wxX11_FS_AUTODETECT)
method = wxGetFullScreenMethodX11(display, rootWindow);
switch (method)
{
case wxX11_FS_WMSPEC:
wxWMspecSetFullscreen(disp, root, wnd, show);
break;
case wxX11_FS_KDE:
wxSetKDEFullscreen(disp, root, wnd, show, origRect);
break;
default:
wxWinHintsSetLayer(disp, root, wnd,
show ? WIN_LAYER_ABOVE_DOCK : WIN_LAYER_NORMAL);
break;
}
}
// ----------------------------------------------------------------------------
// keycode translations
// ----------------------------------------------------------------------------
#include <X11/keysym.h>
// FIXME what about tables??
int wxCharCodeXToWX(KeySym keySym)
{
int id;
switch (keySym)
{
case XK_Shift_L:
case XK_Shift_R:
id = WXK_SHIFT; break;
case XK_Control_L:
case XK_Control_R:
id = WXK_CONTROL; break;
case XK_Meta_L:
case XK_Meta_R:
id = WXK_ALT; break;
case XK_BackSpace:
id = WXK_BACK; break;
case XK_Delete:
id = WXK_DELETE; break;
case XK_Clear:
id = WXK_CLEAR; break;
case XK_Tab:
id = WXK_TAB; break;
case XK_numbersign:
id = '#'; break;
case XK_Return:
id = WXK_RETURN; break;
case XK_Escape:
id = WXK_ESCAPE; break;
case XK_Pause:
case XK_Break:
id = WXK_PAUSE; break;
case XK_Num_Lock:
id = WXK_NUMLOCK; break;
case XK_Scroll_Lock:
id = WXK_SCROLL; break;
case XK_Home:
id = WXK_HOME; break;
case XK_End:
id = WXK_END; break;
case XK_Left:
id = WXK_LEFT; break;
case XK_Right:
id = WXK_RIGHT; break;
case XK_Up:
id = WXK_UP; break;
case XK_Down:
id = WXK_DOWN; break;
case XK_Next:
id = WXK_NEXT; break;
case XK_Prior:
id = WXK_PRIOR; break;
case XK_Menu:
id = WXK_MENU; break;
case XK_Select:
id = WXK_SELECT; break;
case XK_Cancel:
id = WXK_CANCEL; break;
case XK_Print:
id = WXK_PRINT; break;
case XK_Execute:
id = WXK_EXECUTE; break;
case XK_Insert:
id = WXK_INSERT; break;
case XK_Help:
id = WXK_HELP; break;
case XK_KP_Multiply:
id = WXK_MULTIPLY; break;
case XK_KP_Add:
id = WXK_ADD; break;
case XK_KP_Subtract:
id = WXK_SUBTRACT; break;
case XK_KP_Divide:
id = WXK_DIVIDE; break;
case XK_KP_Decimal:
id = WXK_DECIMAL; break;
case XK_KP_Equal:
id = '='; break;
case XK_KP_Space:
id = ' '; break;
case XK_KP_Tab:
id = WXK_TAB; break;
case XK_KP_Enter:
id = WXK_RETURN; break;
case XK_KP_0:
id = WXK_NUMPAD0; break;
case XK_KP_1:
id = WXK_NUMPAD1; break;
case XK_KP_2:
id = WXK_NUMPAD2; break;
case XK_KP_3:
id = WXK_NUMPAD3; break;
case XK_KP_4:
id = WXK_NUMPAD4; break;
case XK_KP_5:
id = WXK_NUMPAD5; break;
case XK_KP_6:
id = WXK_NUMPAD6; break;
case XK_KP_7:
id = WXK_NUMPAD7; break;
case XK_KP_8:
id = WXK_NUMPAD8; break;
case XK_KP_9:
id = WXK_NUMPAD9; break;
case XK_F1:
id = WXK_F1; break;
case XK_F2:
id = WXK_F2; break;
case XK_F3:
id = WXK_F3; break;
case XK_F4:
id = WXK_F4; break;
case XK_F5:
id = WXK_F5; break;
case XK_F6:
id = WXK_F6; break;
case XK_F7:
id = WXK_F7; break;
case XK_F8:
id = WXK_F8; break;
case XK_F9:
id = WXK_F9; break;
case XK_F10:
id = WXK_F10; break;
case XK_F11:
id = WXK_F11; break;
case XK_F12:
id = WXK_F12; break;
case XK_F13:
id = WXK_F13; break;
case XK_F14:
id = WXK_F14; break;
case XK_F15:
id = WXK_F15; break;
case XK_F16:
id = WXK_F16; break;
case XK_F17:
id = WXK_F17; break;
case XK_F18:
id = WXK_F18; break;
case XK_F19:
id = WXK_F19; break;
case XK_F20:
id = WXK_F20; break;
case XK_F21:
id = WXK_F21; break;
case XK_F22:
id = WXK_F22; break;
case XK_F23:
id = WXK_F23; break;
case XK_F24:
id = WXK_F24; break;
default:
id = (keySym <= 255) ? (int)keySym : -1;
}
return id;
}
KeySym wxCharCodeWXToX(int id)
{
KeySym keySym;
switch (id)
{
case WXK_CANCEL: keySym = XK_Cancel; break;
case WXK_BACK: keySym = XK_BackSpace; break;
case WXK_TAB: keySym = XK_Tab; break;
case WXK_CLEAR: keySym = XK_Clear; break;
case WXK_RETURN: keySym = XK_Return; break;
case WXK_SHIFT: keySym = XK_Shift_L; break;
case WXK_CONTROL: keySym = XK_Control_L; break;
case WXK_ALT: keySym = XK_Meta_L; break;
case WXK_MENU : keySym = XK_Menu; break;
case WXK_PAUSE: keySym = XK_Pause; break;
case WXK_ESCAPE: keySym = XK_Escape; break;
case WXK_SPACE: keySym = ' '; break;
case WXK_PRIOR: keySym = XK_Prior; break;
case WXK_NEXT : keySym = XK_Next; break;
case WXK_END: keySym = XK_End; break;
case WXK_HOME : keySym = XK_Home; break;
case WXK_LEFT : keySym = XK_Left; break;
case WXK_UP: keySym = XK_Up; break;
case WXK_RIGHT: keySym = XK_Right; break;
case WXK_DOWN : keySym = XK_Down; break;
case WXK_SELECT: keySym = XK_Select; break;
case WXK_PRINT: keySym = XK_Print; break;
case WXK_EXECUTE: keySym = XK_Execute; break;
case WXK_INSERT: keySym = XK_Insert; break;
case WXK_DELETE: keySym = XK_Delete; break;
case WXK_HELP : keySym = XK_Help; break;
case WXK_NUMPAD0: keySym = XK_KP_0; break;
case WXK_NUMPAD1: keySym = XK_KP_1; break;
case WXK_NUMPAD2: keySym = XK_KP_2; break;
case WXK_NUMPAD3: keySym = XK_KP_3; break;
case WXK_NUMPAD4: keySym = XK_KP_4; break;
case WXK_NUMPAD5: keySym = XK_KP_5; break;
case WXK_NUMPAD6: keySym = XK_KP_6; break;
case WXK_NUMPAD7: keySym = XK_KP_7; break;
case WXK_NUMPAD8: keySym = XK_KP_8; break;
case WXK_NUMPAD9: keySym = XK_KP_9; break;
case WXK_MULTIPLY: keySym = XK_KP_Multiply; break;
case WXK_ADD: keySym = XK_KP_Add; break;
case WXK_SUBTRACT: keySym = XK_KP_Subtract; break;
case WXK_DECIMAL: keySym = XK_KP_Decimal; break;
case WXK_DIVIDE: keySym = XK_KP_Divide; break;
case WXK_F1: keySym = XK_F1; break;
case WXK_F2: keySym = XK_F2; break;
case WXK_F3: keySym = XK_F3; break;
case WXK_F4: keySym = XK_F4; break;
case WXK_F5: keySym = XK_F5; break;
case WXK_F6: keySym = XK_F6; break;
case WXK_F7: keySym = XK_F7; break;
case WXK_F8: keySym = XK_F8; break;
case WXK_F9: keySym = XK_F9; break;
case WXK_F10: keySym = XK_F10; break;
case WXK_F11: keySym = XK_F11; break;
case WXK_F12: keySym = XK_F12; break;
case WXK_F13: keySym = XK_F13; break;
case WXK_F14: keySym = XK_F14; break;
case WXK_F15: keySym = XK_F15; break;
case WXK_F16: keySym = XK_F16; break;
case WXK_F17: keySym = XK_F17; break;
case WXK_F18: keySym = XK_F18; break;
case WXK_F19: keySym = XK_F19; break;
case WXK_F20: keySym = XK_F20; break;
case WXK_F21: keySym = XK_F21; break;
case WXK_F22: keySym = XK_F22; break;
case WXK_F23: keySym = XK_F23; break;
case WXK_F24: keySym = XK_F24; break;
case WXK_NUMLOCK: keySym = XK_Num_Lock; break;
case WXK_SCROLL: keySym = XK_Scroll_Lock; break;
default: keySym = id <= 255 ? (KeySym)id : 0;
}
return keySym;
}
// ----------------------------------------------------------------------------
// check current state of a key
// ----------------------------------------------------------------------------
#include <wx/app.h>
bool wxGetKeyState(wxKeyCode key)
{
#if defined(__WXX11__)
Display *pDisplay = wxApp::GetDisplay();
#elif defined(__WXGTK__)
Display *pDisplay = GDK_DISPLAY();
#else
#error Add code to get the DISPLAY for this platform
#endif
int iKey = wxCharCodeWXToX(key);
int iKeyMask = 0;
Window wDummy1, wDummy2;
int iDummy3, iDummy4, iDummy5, iDummy6;
unsigned int iMask;
XModifierKeymap* map = XGetModifierMapping(pDisplay);
KeyCode keyCode = XKeysymToKeycode(pDisplay,iKey);
if (keyCode == NoSymbol)
return false;
for (int i = 0; i < 8; ++i)
{
if ( map->modifiermap[map->max_keypermod * i] == keyCode)
{
iKeyMask = 1 << i;
}
}
XQueryPointer(pDisplay, DefaultRootWindow(pDisplay), &wDummy1, &wDummy2,
&iDummy3, &iDummy4, &iDummy5, &iDummy6, &iMask );
XFreeModifiermap(map);
return (iMask & iKeyMask) != 0;
}
#endif
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