688 lines
19 KiB
C
688 lines
19 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* (c) Copyright 1989, 1990, 1991, 1992, 1993 OPEN SOFTWARE FOUNDATION, INC.
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* ALL RIGHTS RESERVED
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*/
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/*
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* Motif Release 1.2.3
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*/
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/*
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* (c) Copyright 1987, 1988, 1989, 1990 HEWLETT-PACKARD COMPANY */
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/*
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* Included Files:
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*/
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#include "WmGlobal.h"
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/*
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* include extern functions
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*/
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#include "WmColormap.h"
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#include "WmKeyFocus.h"
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static Bool ProcessEvents(Display *dpy, XEvent *Event, char *c_pCD);
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/* Global variables */
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static unsigned long firstRequest, lastRequest;
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/*************************************<->*************************************
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*
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* InitWorkspaceColormap ()
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*
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*
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* Description:
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* -----------
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* This function sets up the default workspace colormap and prepares for
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* workspace colormap processing.
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*
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*
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* Inputs:
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* -------
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* pSD = ptr to screen data
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*
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* Outputs:
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* -------
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* wmGD = (workspaceColormap)
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*
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*************************************<->***********************************/
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void InitWorkspaceColormap (WmScreenData *pSD)
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{
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/*
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* Setup the default (workspace) colormap:
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* !!! this should be made more general to get the colormap for the !!!
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* !!! workspace (root) and then track colormap changes !!!
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*/
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pSD->workspaceColormap = DefaultColormap (DISPLAY, pSD->screen);
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} /* END OF FUNCTION InitWorkspaceColormap */
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/*************************************<->*************************************
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*
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* InitColormapFocus (pSD)
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*
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*
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* Description:
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* -----------
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* This function prepares for managing the colormap focus and sets the
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* initial colormap focus (if the focus policy is "keyboard" - i.e. the
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* colormap focus tracks the keyboard focus) the initial colormap
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* installation is done in InitKeyboardFocus.
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*
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* Inputs:
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* -------
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* pSD = pointer to screen data
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*
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* Outputs:
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* -------
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* *pSD = (colormapFocus)
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*
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*************************************<->***********************************/
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void InitColormapFocus (WmScreenData *pSD)
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{
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ClientData *pCD;
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Boolean sameScreen;
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/*
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* Set up the initial colormap focus. If the colormapFocusPolicy is
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* "keyboard" or it is "pointer" and the keyboard input focus policy
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* is "pointer" then set up the initial colormap focus when the
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* initial keyboard input focus is set up.
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*/
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pSD->colormapFocus = NULL;
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if (wmGD.colormapFocusPolicy == CMAP_FOCUS_POINTER)
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{
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if (wmGD.keyboardFocusPolicy != KEYBOARD_FOCUS_POINTER)
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{
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if ((pCD = GetClientUnderPointer (&sameScreen)) != NULL)
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{
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SetColormapFocus (pSD, pCD);
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}
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else
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{
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WmInstallColormap (pSD, pSD->workspaceColormap);
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}
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}
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}
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else
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{
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WmInstallColormap (pSD, pSD->workspaceColormap);
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}
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} /* END OF FUNCTION InitColormapFocus */
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/*************************************<->*************************************
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*
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* ForceColormapFocus (pSD, pCD)
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*
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*
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* Description:
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* -----------
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* ForceColormapFocus is the working part of the original SetColormapFocus.
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* This function is used to unconditionally set the colormap focus to a
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* particular client window or to clear the colormap focus (set focus to
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* the root window).
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*
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* The reason is to permit focus to be dtrced. We need to do this because
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* we can already have colormap focus, but still need to set the colormaps.
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* Examples of when this occurs are:
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*
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* * after the window manager itself has forced a colormap,
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* as happens when it draws transients in the overlay planes.
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* * when WM_COLORMAP_WINDOWS changes.
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* * when a ColormapNotify (new) event is received.
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*
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*
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* Inputs:
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* ------
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* pSD = pointer to Screen Data
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* pCD = pointer to client data (clientColormap ...)
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*
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*************************************<->***********************************/
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void ForceColormapFocus (WmScreenData *pSD, ClientData *pCD)
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{
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if (pCD && ((pCD->clientState == NORMAL_STATE) ||
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(pCD->clientState == MAXIMIZED_STATE)))
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{
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pSD->colormapFocus = pCD;
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ProcessColormapList (pSD, pCD);
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}
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else
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{
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/*
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* The default colormap is installed for minimized windows that have
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* the colormap focus.
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* !!! should colormaps be installed for icons with client !!!
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* !!! icon windows? should the client colormap be installed ? !!!
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*/
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pSD->colormapFocus = NULL;
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WmInstallColormap (pSD, pSD->workspaceColormap);
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}
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} /* END OF FUNCTION ForceColormapFocus */
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/*************************************<->*************************************
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*
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* SetColormapFocus (pSD, pCD)
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*
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*
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* Description:
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* -----------
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* This function is used to set the colormap focus to a particular client
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* window or to clear the colormap focus (set focus to the root window).
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*
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*
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* Inputs:
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* ------
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* pSD = pointer to Screen Data
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* pCD = pointer to client data (clientColormap ...)
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*
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*************************************<->***********************************/
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void SetColormapFocus (WmScreenData *pSD, ClientData *pCD)
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{
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if (pCD == pSD->colormapFocus)
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{
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/*
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* The focus is already set to the right place.
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*/
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return;
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}
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ForceColormapFocus (pSD, pCD);
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} /* END OF FUNCTION SetColormapFocus */
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/*************************************<->*************************************
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*
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* WmInstallColormap (pSD, colormap)
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*
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*
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* Description:
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* -----------
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* This function installs colormaps for the window manager. It trys to be
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* intelligent and avoid unnecessary installations. It assumes that no
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* other program is installing colormaps.
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*
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*
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* Inputs:
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* ------
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* pSD = ptr to screen data
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* colormap = the id for the colormap to be installed
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*
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*************************************<->***********************************/
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void WmInstallColormap (WmScreenData *pSD, Colormap colormap)
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{
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/*
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* !!! this could be generalized to work better for systems that !!!
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* !!! support multiple installed colormaps !!!
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*/
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if (colormap != pSD->lastInstalledColormap)
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{
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XInstallColormap (DISPLAY, colormap);
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pSD->lastInstalledColormap = colormap;
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}
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} /* END OF FUNCTION WmInstallColormap */
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/*************************************<->*************************************
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*
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* ResetColormapData (pCD, pWindows, count)
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*
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*
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* Description:
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* -----------
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* This function is used to release old colormap data (contexts, malloc'ed
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* space).
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*
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*
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* Inputs:
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* ------
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* pCD = pointer to client data (cmapWindows ...)
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*
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* pWindows = new list of colormap windows
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*
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* count = number of windows in new colormap windows list
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*
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*************************************<->***********************************/
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void ResetColormapData (ClientData *pCD, Window *pWindows, int count)
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{
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int i;
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if (pCD->clientCmapCount)
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{
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if (count == 0)
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{
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/* reset the client colormap to the toplevel window colormap */
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for (i = 0; i < pCD->clientCmapCount; i++)
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{
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if (pCD->cmapWindows[i] == pCD->client)
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{
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pCD->clientColormap = pCD->clientCmapList[i];
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break;
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}
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}
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}
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/*
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* Free up old contexts.
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*/
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for (i = 0; i < pCD->clientCmapCount; i++)
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{
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if (pCD->cmapWindows[i] != pCD->client)
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{
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#ifndef IBM_169380
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RemoveColormapWindowReference(pCD, pCD->cmapWindows[i]);
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#else
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XDeleteContext (DISPLAY, pCD->cmapWindows[i],
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wmGD.windowContextType);
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#endif
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}
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}
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/*
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* Free up old colormap data.
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*/
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XtFree ((char *)(pCD->cmapWindows));
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XtFree ((char *)(pCD->clientCmapList));
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pCD->clientCmapCount = 0;
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XtFree ((char *)(pCD->clientCmapFlags));
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pCD->clientCmapFlags = 0; /* DEBUG: */
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pCD->clientCmapFlagsInitialized = 0;
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}
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if (count)
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{
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/*
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* Set new contexts.
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*/
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for (i = 0; i < count; i++)
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{
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if (pWindows[i] != pCD->client)
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{
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#ifndef IBM_169380
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AddColormapWindowReference(pCD, pWindows[i]);
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#else
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XSaveContext (DISPLAY, pWindows[i], wmGD.windowContextType,
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(caddr_t)pCD);
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#endif
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}
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}
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}
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} /* END OF FUNCTION ResetColormapData */
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#ifndef IBM_169380
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/*************************************<->*************************************
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*
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* AddColormapWindowReference (pCD, window)
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*
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* Description:
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* -----------
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* This function is used to update (or create, if necessary) the structure
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* that keeps track of all references to a Window from a toplevel window
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* WM_COLORMAP_DATA property.
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*
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*************************************<->***********************************/
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void AddColormapWindowReference (ClientData *pCD, Window window)
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{
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ClientData **cmap_window_data;
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Boolean context_exists;
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int i;
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ClientData **new_cmap_window_data;
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context_exists = (!XFindContext (DISPLAY, window,
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wmGD.cmapWindowContextType,
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(XPointer *) &cmap_window_data));
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if (context_exists)
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{
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for (i = 0; cmap_window_data[i] != NULL; i++)
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{
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if (cmap_window_data[i] == pCD)
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{
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/* Reference already exists - return */
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return;
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}
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}
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new_cmap_window_data = (ClientData **)
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XtMalloc((i + 2 ) * sizeof(ClientData *));
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memcpy((void *)new_cmap_window_data,(void *)cmap_window_data,
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(i + 1) * sizeof(ClientData *));
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XtFree((char *) cmap_window_data);
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XDeleteContext(DISPLAY, window, wmGD.cmapWindowContextType);
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}
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else
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{
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i = 0;
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new_cmap_window_data = (ClientData **)
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XtMalloc(2 * sizeof(ClientData *));
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}
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new_cmap_window_data[i] = pCD;
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new_cmap_window_data[i + 1] = NULL;
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XSaveContext (DISPLAY, window, wmGD.cmapWindowContextType,
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(caddr_t)new_cmap_window_data);
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}
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/*************************************<->*************************************
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*
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* RemoveColormapWindowReference (pCD, window)
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*
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* Description:
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* -----------
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* This function is used to update (or delete, if necessary) the structure
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* that keeps track of all references to a Window from a toplevel window
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* WM_COLORMAP_DATA property.
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*
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*************************************<->***********************************/
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void RemoveColormapWindowReference (ClientData *pCD, Window window)
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{
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ClientData **cmap_window_data;
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Boolean context_exists;
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int i;
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int reference_idx = -1;
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ClientData **new_cmap_window_data;
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context_exists = (!XFindContext (DISPLAY, window,
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wmGD.cmapWindowContextType,
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(XPointer *) &cmap_window_data));
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if (context_exists)
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{
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for (i = 0; cmap_window_data[i] != NULL; i++)
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{
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if (cmap_window_data[i] == pCD)
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reference_idx = i;
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}
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if (reference_idx < 0)
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return;
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if (i > 1)
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{
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int j,idx;
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new_cmap_window_data = (ClientData **)
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XtMalloc(i * sizeof(ClientData *));
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idx = 0;
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for (j = 0; cmap_window_data[j] != NULL; j++)
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{
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if (j != reference_idx)
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{
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new_cmap_window_data[idx] = cmap_window_data[j];
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idx++;
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}
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}
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new_cmap_window_data[idx] = NULL;
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}
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XtFree((char *) cmap_window_data);
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XDeleteContext(DISPLAY, window, wmGD.cmapWindowContextType);
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if (i > 1)
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{
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XSaveContext (DISPLAY, window,
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wmGD.cmapWindowContextType,
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(caddr_t)new_cmap_window_data);
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}
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}
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}
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#endif /* IBM_169380 */
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/*******************************************************************************
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**
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** The rest of this module contains the SGI-added colormap handling.
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**
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** mwm 1.1.3 didn't even try to deal with multiple colormaps, except to rotate
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** them. We need to see that all of the colormaps from WM_COLORMAP_WINDOWS
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** are installed when a window gets colormap focus.
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**
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** The general idea is to keep track of which colormaps bounce which other
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** ones, so we only flash the first time (usually not even then).
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**
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** The conflict record of a window is cleared whenever:
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** * WM_COLORMAP_WINDOWS property changes
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** * ColormapNotify for a new colormap happens
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** * windows are rotated (prev_cmap, next_cmap)
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** This is because with a changed colormap list, we need to recalculate
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** which ones get bounced out during a full colormap installation.
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**
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** We don't just lift the twm code because, after carefully looking over
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** the twm code, it appears to have some problems of its own. In
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** particular, it assumes that if a given colormap displaces another one
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** once, it will always do so. This isn't necessarily so for a multiple
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** hardware colormaps machine.
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**
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** We still need to add code to keep track of which color maps are really
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** installed at any one time. The current code is ready for this, but it has
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** not yet been done. Then we could do two things:
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**
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** * refrain from installing a colormap if it is already installed
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**
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** * have a way to restore all installed colormaps after the window
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** manager overwrites with it's own.
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**
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******************************************************************************/
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void
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ProcessColormapList (WmScreenData *pSD, ClientData *pCD)
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{
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int i;
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XEvent event;
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/*
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* If there is no client, return. This can happen when the root gets focus.
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*/
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if (!pCD) return;
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/*
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* If the window does not have colormap focus, return. We only install
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* colormaps for windows with focus. We'll get another chance when the
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* window does get focus.
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*/
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if (pCD != pSD->colormapFocus) return;
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/*
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* If window is iconified, return.
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*/
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if ( (pCD->clientState != NORMAL_STATE)
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&& (pCD->clientState != MAXIMIZED_STATE)
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) return;
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/*
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* If the list doesn't exist, or has just a single item, no conflicts
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* exist -- just go ahead and install the indicated colormap.
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*/
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if (pCD->clientCmapCount == 0) {
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WmInstallColormap (pSD, pCD->clientColormap);
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return;
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}
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if (pCD->clientCmapCount == 1) {
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WmInstallColormap (pSD, pCD->clientCmapList[0]);
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return;
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}
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/*
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* If the list has already been initialized, we just need to do installs.
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* Separate out these loops for performance, and because it isn't nice
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* to grab the server unnecessarily.
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*
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* This code should also check for already-installed, once we put in that
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* capability.
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*/
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if (pCD->clientCmapFlagsInitialized) {
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/* Do the part between the index and zero */
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for (i=pCD->clientCmapIndex; --i>=0; ) {
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if (pCD->clientCmapFlags[i] == ColormapInstalled) {
|
||
WmInstallColormap (pSD, pCD->clientCmapList[i]);
|
||
}
|
||
};
|
||
|
||
/* Do the part from the end of the list to the index */
|
||
for (i=pCD->clientCmapCount; --i>= pCD->clientCmapIndex; ) {
|
||
if (pCD->clientCmapFlags[i] == ColormapInstalled) {
|
||
WmInstallColormap (pSD, pCD->clientCmapList[i]);
|
||
}
|
||
}
|
||
|
||
/**/
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* If we get this far, the list has not yet been initialized.
|
||
*
|
||
* Stabilize the input queue -- the issue is that we need to know
|
||
* which colormap notify install and uninstall events are ours.
|
||
*/
|
||
XGrabServer (DISPLAY); /* Ensure no one else's events for awhile */
|
||
XSync (DISPLAY, FALSE); /* Let pending events settle */
|
||
firstRequest = NextRequest (DISPLAY); /* First one that can be ours */
|
||
|
||
/*
|
||
* Install the colormaps from last to first -- first is the "highest
|
||
* priority". "First" is pCD->clientCmapIndex.
|
||
*
|
||
* If the list has not been proocessed before, we need to unconditionally
|
||
* install each colormap. Colormap flashing is possible this once.
|
||
*
|
||
* If the list has already been processed once, all conflict checking
|
||
* was done then. All we need to do this time is to install the colormaps
|
||
* we know we need.
|
||
*/
|
||
|
||
/* Do the part between the index and zero */
|
||
for (i=pCD->clientCmapIndex; --i>=0; ) {
|
||
WmInstallColormap (pSD, pCD->clientCmapList[i]);
|
||
pCD->clientCmapFlags[i] = ColormapInstalled;
|
||
};
|
||
|
||
/* Do the part from the end of the list to the index */
|
||
for (i=pCD->clientCmapCount; --i>= pCD->clientCmapIndex; ) {
|
||
WmInstallColormap (pSD, pCD->clientCmapList[i]);
|
||
pCD->clientCmapFlags[i] = ColormapInstalled;
|
||
}
|
||
|
||
/*
|
||
* Stabilize the input queue again -- the issue is that we need to know
|
||
* which colormap notify install and uninstall events we caused.
|
||
*/
|
||
XSync (DISPLAY, FALSE); /* Let pending events settle */
|
||
lastRequest = NextRequest (DISPLAY); /* Last one that can be ours */
|
||
XUngrabServer (DISPLAY); /* Let others use it again */
|
||
|
||
/* Process the install & uninstall events */
|
||
XCheckIfEvent (DISPLAY, (XEvent *) &event, ProcessEvents, (char *)pCD);
|
||
|
||
/* Set that the list has been processed once */
|
||
pCD->clientCmapFlagsInitialized = True;
|
||
}
|
||
|
||
|
||
/*
|
||
* Look over the queue for install and uninstall events on colormap/window
|
||
* combinations we care about. We don't actually disturb the queue, so
|
||
* events can be delivered in undisturbed order to the normal event handling
|
||
* routines.
|
||
*
|
||
* For each appropriate install/uninstall ColormapNotify event that is queued:
|
||
* *) if uninstall event
|
||
* *) Set the conflict flag for this colormap window
|
||
* else if install event
|
||
* *) Clear the conflict flag for this colormap window
|
||
*/
|
||
static Bool
|
||
ProcessEvents(Display *dpy, XEvent *Event, char *c_pCD)
|
||
{
|
||
int i;
|
||
XColormapEvent *pEvent = (XColormapEvent *) Event;
|
||
ClientData *pCD = (ClientData *) c_pCD;
|
||
|
||
if ( (pEvent->type == ColormapNotify)
|
||
&& (pEvent->serial >= firstRequest)
|
||
&& (pEvent->serial < lastRequest)
|
||
&& (pEvent->colormap != None)
|
||
&& (!pEvent->new)
|
||
) {
|
||
switch (pEvent->state) {
|
||
case ColormapInstalled:
|
||
for (i=0; i<pCD->clientCmapCount; i++) {
|
||
if ( (pCD->clientCmapList[i]==pEvent->colormap)
|
||
&&(pCD->cmapWindows[i]==pEvent->window)
|
||
) {
|
||
pCD->clientCmapFlags[i]
|
||
= ColormapInstalled;
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
case ColormapUninstalled:
|
||
for (i=0; i<pCD->clientCmapCount; i++) {
|
||
if ( (pCD->clientCmapList[i]==pEvent->colormap)
|
||
&&(pCD->cmapWindows[i]==pEvent->window)
|
||
) {
|
||
pCD->clientCmapFlags[i]
|
||
= ColormapUninstalled;
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
default: /* Should never get here */
|
||
break;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Always return false:
|
||
* * so that we get to search the entire queue -- it isn't very long
|
||
* * so all events remain on the queue to be handled normally elsewhere
|
||
*/
|
||
return False; /* Always, so no events are lost from the queue */
|
||
}
|