X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0fc5dbf52a35041340cc1d20aefd81b65b8161c8..ffafd8a55bb0b8fb4236e4522792a6b143813609:/src/unix/utilsx11.cpp diff --git a/src/unix/utilsx11.cpp b/src/unix/utilsx11.cpp index 073a4eb0d4..85256f048e 100644 --- a/src/unix/utilsx11.cpp +++ b/src/unix/utilsx11.cpp @@ -1,20 +1,24 @@ ///////////////////////////////////////////////////////////////////////////// // Name: src/unix/utilsx11.cpp // Purpose: Miscellaneous X11 functions -// Author: Mattia Barbon +// Author: Mattia Barbon, Vaclav Slavik, Robert Roebling // Modified by: // Created: 25.03.02 // RCS-ID: $Id$ // Copyright: (c) wxWindows team -// Licence: wxWindows license +// Licence: wxWindows 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 @@ -25,6 +29,66 @@ #pragma message enable nosimpint #endif +#ifdef __WXGTK20__ +#include +#include +#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 ) { @@ -36,12 +100,15 @@ void wxSetIconsX11( WXDisplay* display, WXWindow window, if( ib.m_icons[i].Ok() ) size += 2 + ib.m_icons[i].GetWidth() * ib.m_icons[i].GetHeight(); - Atom net_wm_icon = XInternAtom( (Display*)display, "_NET_WM_ICON", 0 ); + wxMAKE_ATOM(_NET_WM_ICON, (Display*)display); if( size > 0 ) { - wxUint32* data = new wxUint32[size]; - wxUint32* ptr = data; +// 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 ) { @@ -86,7 +153,7 @@ void wxSetIconsX11( WXDisplay* display, WXWindow window, XChangeProperty( (Display*)display, (Window)window, - net_wm_icon, + _NET_WM_ICON, XA_CARDINAL, 32, PropModeReplace, (unsigned char*)data, size ); @@ -96,9 +163,347 @@ void wxSetIconsX11( WXDisplay* display, WXWindow window, { XDeleteProperty( (Display*)display, (Window)window, - net_wm_icon ); + _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 wxWindows 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; + } } #endif +