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xenocara/app/fvwm/fvwm/decorations.c

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/****************************************************************************
*
* This is all original code by Robert Nation
* which reads motif mwm window manager
* hints from a window, and makes necessary adjustments for fvwm.
*
* Definitions of the hint structure and the constants are courtesy of
* mitnits@bgumail.bgu.ac.il (Roman Mitnitski ), who sent this note,
* after conferring with a friend at the OSF:
* Hi, Rob.
*
*I'm happy to announce, that you can use motif public
*headers in any way you can... I just got the letter from
*my friend, it says literally:
*
*> Hi.
*>
*> Yes, you can use motif public header files, in particular
*> because there is NO limitation on inclusion of this files
*> in your programms....Also, no one can put copyright to the NUMBERS
*> (I mean binary flags for decorations) or DATA STRUCTURES
*> (I mean little structure used by motif to pass description
*> of the decorations to the mwm). Call it another name, if you are
*> THAT MUCH concerned.
*>
*> You can even use the little piece of code I've passed to you -
*> we are talking about 10M distribution against two pages of code.
*> Don't be silly.
*>
*> Best wishes.
*> Eli.
*
*
****************************************************************************/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "fvwm.h"
#include <X11/Xatom.h>
#include <X11/Xproto.h>
#include "misc.h"
#include "screen.h"
#include "parse.h"
#include "menus.h"
#include "lang-strings.h"
extern Atom _XA_MwmAtom;
/* Motif window hints */
typedef struct
{
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long inputMode;
} PropMotifWmHints;
typedef PropMotifWmHints PropMwmHints;
/* Motif window hints */
#define MWM_HINTS_FUNCTIONS (1L << 0)
#define MWM_HINTS_DECORATIONS (1L << 1)
/* bit definitions for MwmHints.functions */
#define MWM_FUNC_ALL (1L << 0)
#define MWM_FUNC_RESIZE (1L << 1)
#define MWM_FUNC_MOVE (1L << 2)
#define MWM_FUNC_MINIMIZE (1L << 3)
#define MWM_FUNC_MAXIMIZE (1L << 4)
#define MWM_FUNC_CLOSE (1L << 5)
/* bit definitions for MwmHints.decorations */
#define MWM_DECOR_ALL (1L << 0)
#define MWM_DECOR_BORDER (1L << 1)
#define MWM_DECOR_RESIZEH (1L << 2)
#define MWM_DECOR_TITLE (1L << 3)
#define MWM_DECOR_MENU (1L << 4)
#define MWM_DECOR_MINIMIZE (1L << 5)
#define MWM_DECOR_MAXIMIZE (1L << 6)
#define PROP_MOTIF_WM_HINTS_ELEMENTS 4
#define PROP_MWM_HINTS_ELEMENTS PROP_MOTIF_WM_HINTS_ELEMENTS
/* bit definitions for OL hints; I just
* made these up, OL stores hints as atoms */
#define OL_DECOR_CLOSE (1L << 0)
#define OL_DECOR_RESIZEH (1L << 1)
#define OL_DECOR_HEADER (1L << 2)
#define OL_DECOR_ICON_NAME (1L << 3)
#define OL_DECOR_ALL (OL_DECOR_CLOSE | OL_DECOR_RESIZEH | OL_DECOR_HEADER | OL_DECOR_ICON_NAME)
extern FvwmWindow *Tmp_win;
/****************************************************************************
*
* Reads the property MOTIF_WM_HINTS
*
*****************************************************************************/
void GetMwmHints(FvwmWindow *t)
{
int actual_format;
Atom actual_type;
unsigned long nitems, bytesafter;
if(XGetWindowProperty (dpy, t->w, _XA_MwmAtom, 0L, 20L, False,
_XA_MwmAtom, &actual_type, &actual_format, &nitems,
&bytesafter,(unsigned char **)&t->mwm_hints)==Success)
{
if(nitems >= PROP_MOTIF_WM_HINTS_ELEMENTS)
{
return;
}
}
t->mwm_hints = NULL;
}
/****************************************************************************
*
* Reads the openlook properties _OL_WIN_ATTR, _OL_DECOR_ADD, _OL_DECOR_DEL
*
* _OL_WIN_ATTR - the win_type field is the either the first atom if the
* property has length three or the second atom if the property has
* length five. It can be any of:
* _OL_WT_BASE (no changes)
* _OL_WT_CMD (no minimize decoration)
* _OL_WT_HELP (no minimize, maximize or resize handle decorations)
* _OL_WT_NOTICE (no minimize, maximize, system menu, resize handle
* or titlebar decorations)
* _OL_WT_OTHER (no minimize, maximize, system menu, resize handle
* or titlebar decorations)
* In addition, if the _OL_WIN_ATTR property is in the three atom format
* or if the type is _OL_WT_OTHER, then the icon name is not displayed
* (same behavior as olvwm).
*
* _OL_DECOR_ADD or _OL_DECOR_DEL - indivdually add or remove minimize
* button (_OL_DECOR_CLOSE), resize handles (_OL_DECOR_RESIZE), title bar
* (_OL_DECOR_HEADER), or icon name (_OL_DECOR_ICON_NAME).
*
* The documentation for the Open Look hints was taken from "Advanced X
* Window Application Programming", Eric F. Johnson and Kevin Reichard
* (M&T Books), and the olvwm source code (available at ftp.x.org in
* /R5contrib).
*****************************************************************************/
void GetOlHints(FvwmWindow *t)
{
int actual_format;
Atom actual_type;
unsigned long nitems, bytesafter;
Atom *hints;
int i;
Atom win_type;
t->ol_hints = OL_DECOR_ALL;
if (XGetWindowProperty (dpy, t->w, _XA_OL_WIN_ATTR, 0L, 20L, False,
_XA_OL_WIN_ATTR, &actual_type, &actual_format, &nitems,
&bytesafter,(unsigned char **)&hints)==Success)
{
if (nitems > 0)
{
if (nitems == 3)
win_type = hints[0];
else
win_type = hints[1];
/* got this from olvwm and sort of mapped it to
* FVWM/MWM hints */
if (win_type == _XA_OL_WT_BASE)
t->ol_hints = OL_DECOR_ALL;
else if (win_type == _XA_OL_WT_CMD)
t->ol_hints = OL_DECOR_ALL & ~OL_DECOR_CLOSE;
else if (win_type == _XA_OL_WT_HELP)
t->ol_hints = OL_DECOR_ALL & ~(OL_DECOR_CLOSE | OL_DECOR_RESIZEH);
else if (win_type == _XA_OL_WT_NOTICE)
t->ol_hints = OL_DECOR_ALL & ~(OL_DECOR_CLOSE | OL_DECOR_RESIZEH |
OL_DECOR_HEADER | OL_DECOR_ICON_NAME);
else if (win_type == _XA_OL_WT_OTHER)
t->ol_hints = 0;
else
t->ol_hints = OL_DECOR_ALL;
if (nitems == 3)
t->ol_hints &= ~OL_DECOR_ICON_NAME;
}
if (hints)
XFree (hints);
}
if(XGetWindowProperty (dpy, t->w, _XA_OL_DECOR_ADD, 0L, 20L, False,
XA_ATOM, &actual_type, &actual_format, &nitems,
&bytesafter,(unsigned char **)&hints)==Success)
{
for (i = 0; i < nitems; i++) {
if (hints[i] == _XA_OL_DECOR_CLOSE)
t->ol_hints |= OL_DECOR_CLOSE;
else if (hints[i] == _XA_OL_DECOR_RESIZE)
t->ol_hints |= OL_DECOR_RESIZEH;
else if (hints[i] == _XA_OL_DECOR_HEADER)
t->ol_hints |= OL_DECOR_HEADER;
else if (hints[i] == _XA_OL_DECOR_ICON_NAME)
t->ol_hints |= OL_DECOR_ICON_NAME;
}
if (hints)
XFree (hints);
}
if(XGetWindowProperty (dpy, t->w, _XA_OL_DECOR_DEL, 0L, 20L, False,
XA_ATOM, &actual_type, &actual_format, &nitems,
&bytesafter,(unsigned char **)&hints)==Success)
{
for (i = 0; i < nitems; i++) {
if (hints[i] == _XA_OL_DECOR_CLOSE)
t->ol_hints &= ~OL_DECOR_CLOSE;
else if (hints[i] == _XA_OL_DECOR_RESIZE)
t->ol_hints &= ~OL_DECOR_RESIZEH;
else if (hints[i] == _XA_OL_DECOR_HEADER)
t->ol_hints &= ~OL_DECOR_HEADER;
else if (hints[i] == _XA_OL_DECOR_ICON_NAME)
t->ol_hints &= ~OL_DECOR_ICON_NAME;
}
if (hints)
XFree (hints);
}
}
/****************************************************************************
*
* Interprets the property MOTIF_WM_HINTS, sets decoration and functions
* accordingly
*
*****************************************************************************/
void SelectDecor(FvwmWindow *t, unsigned long tflags, int border_width,
int resize_width)
{
int decor,i;
PropMwmHints *prop;
if(!(tflags & BW_FLAG))
border_width = Scr.NoBoundaryWidth;
if(!(tflags & NOBW_FLAG))
resize_width = Scr.BoundaryWidth;
for(i=0;i<5;i++)
{
t->left_w[i] = 1;
t->right_w[i] = 1;
}
decor = MWM_DECOR_ALL;
t->functions = MWM_FUNC_ALL;
if(t->mwm_hints)
{
prop = (PropMwmHints *)t->mwm_hints;
if(tflags & MWM_DECOR_FLAG)
if(prop->flags & MWM_HINTS_DECORATIONS)
decor = prop->decorations;
if(tflags & MWM_FUNCTIONS_FLAG)
if(prop->flags & MWM_HINTS_FUNCTIONS)
t->functions = prop->functions;
}
/* functions affect the decorations! if the user says
* no iconify function, then the iconify button doesn't show
* up. */
if(t->functions & MWM_FUNC_ALL)
{
/* If we get ALL + some other things, that means to use
* ALL except the other things... */
t->functions &= ~MWM_FUNC_ALL;
t->functions = (MWM_FUNC_RESIZE | MWM_FUNC_MOVE | MWM_FUNC_MINIMIZE |
MWM_FUNC_MAXIMIZE | MWM_FUNC_CLOSE) & (~(t->functions));
}
if((tflags & MWM_FUNCTIONS_FLAG) && (t->flags & TRANSIENT))
{
t->functions &= ~(MWM_FUNC_MAXIMIZE|MWM_FUNC_MINIMIZE);
}
if(decor & MWM_DECOR_ALL)
{
/* If we get ALL + some other things, that means to use
* ALL except the other things... */
decor &= ~MWM_DECOR_ALL;
decor = (MWM_DECOR_BORDER | MWM_DECOR_RESIZEH | MWM_DECOR_TITLE |
MWM_DECOR_MENU | MWM_DECOR_MINIMIZE | MWM_DECOR_MAXIMIZE)
& (~decor);
}
/* now remove any functions specified in the OL hints */
if (tflags & OL_DECOR_FLAG)
{
if (!(t->ol_hints & OL_DECOR_CLOSE))
t->functions &= ~MWM_FUNC_MINIMIZE;
if (!(t->ol_hints & OL_DECOR_RESIZEH))
t->functions &= ~(MWM_FUNC_RESIZE | MWM_FUNC_MAXIMIZE);
if (!(t->ol_hints & OL_DECOR_HEADER))
t->functions &= ~(MWM_DECOR_MENU | MWM_FUNC_MINIMIZE |
MWM_FUNC_MAXIMIZE | MWM_DECOR_TITLE);
if (!(t->ol_hints & OL_DECOR_ICON_NAME))
t->flags |= NOICON_TITLE;
}
/* Now I have the un-altered decor and functions, but with the
* ALL attribute cleared and interpreted. I need to modify the
* decorations that are affected by the functions */
if(!(t->functions & MWM_FUNC_RESIZE))
decor &= ~MWM_DECOR_RESIZEH;
/* MWM_FUNC_MOVE has no impact on decorations. */
if(!(t->functions & MWM_FUNC_MINIMIZE))
decor &= ~MWM_DECOR_MINIMIZE;
if(!(t->functions & MWM_FUNC_MAXIMIZE))
decor &= ~MWM_DECOR_MAXIMIZE;
/* MWM_FUNC_CLOSE has no impact on decorations. */
/* This rule is implicit, but its easier to deal with if
* I take care of it now */
if(decor & (MWM_DECOR_MENU| MWM_DECOR_MINIMIZE | MWM_DECOR_MAXIMIZE))
decor |= MWM_DECOR_TITLE;
/* Selected the mwm-decor field, now trim down, based on
* .fvwmrc entries */
if ((tflags & NOTITLE_FLAG)||
((!(tflags & DECORATE_TRANSIENT_FLAG)) && (t->flags & TRANSIENT)))
decor &= ~MWM_DECOR_TITLE;
if ((tflags & NOBORDER_FLAG)||
((!(tflags&DECORATE_TRANSIENT_FLAG)) && (t->flags & TRANSIENT)))
decor &= ~MWM_DECOR_RESIZEH;
if((tflags & MWM_DECOR_FLAG) && (t->flags & TRANSIENT))
{
decor &= ~(MWM_DECOR_MAXIMIZE|MWM_DECOR_MINIMIZE);
}
#ifdef SHAPE
if (ShapesSupported)
{
if(t->wShaped)
decor &= ~(BORDER|MWM_DECOR_RESIZEH);
}
#endif
/* Assume no decorations, and build up */
t->flags &= ~(BORDER|TITLE);
if(tflags & MWM_BORDER_FLAG)
t->flags |= MWMBorders;
if(tflags & MWM_BUTTON_FLAG)
t->flags |= MWMButtons;
if(tflags & MWM_OVERRIDE_FLAG)
t->flags |= HintOverride;
t->boundary_width = 0;
t->corner_width = 0;
t->title_height = 0;
if(decor & MWM_DECOR_BORDER)
{
/* A narrow border is displayed (5 pixels - 2 relief, 1 top,
* (2 shadow) */
t->boundary_width = border_width;
}
if(decor & MWM_DECOR_TITLE)
{
/* A title barm with no buttons in it
* window gets a 1 pixel wide black border. */
t->flags |= TITLE;
t->title_height = GetDecor(t,TitleHeight);
}
if(decor & MWM_DECOR_RESIZEH)
{
/* A wide border, with corner tiles is desplayed
* (10 pixels - 2 relief, 2 shadow) */
t->flags |= BORDER;
t->boundary_width = resize_width;
t->corner_width = GetDecor(t,TitleHeight) + t->boundary_width;
}
if(!(decor & MWM_DECOR_MENU))
{
/* title-bar menu button omitted
* window gets 1 pixel wide black border */
/* disable any buttons with the MWMDecorMenu flag */
int i;
for (i = 0; i < 5; ++i) {
if (GetDecor(t,left_buttons[i].flags)&MWMDecorMenu)
t->left_w[i] = None;
if (GetDecor(t,right_buttons[i].flags)&MWMDecorMenu)
t->right_w[i] = None;
}
}
if(!(decor & MWM_DECOR_MINIMIZE))
{
/* title-bar + iconify button, no menu button.
* window gets 1 pixel wide black border */
/* disable any buttons with the MWMDecorMinimize flag */
int i;
for (i = 0; i < 5; ++i) {
if (GetDecor(t,left_buttons[i].flags)&MWMDecorMinimize)
t->left_w[i] = None;
if (GetDecor(t,right_buttons[i].flags)&MWMDecorMinimize)
t->right_w[i] = None;
}
}
if(!(decor & MWM_DECOR_MAXIMIZE))
{
/* title-bar + maximize button, no menu button, no iconify.
* window has 1 pixel wide black border */
/* disable any buttons with the MWMDecorMaximize flag */
int i;
for (i = 0; i < 5; ++i) {
if (GetDecor(t,left_buttons[i].flags)&MWMDecorMaximize)
t->left_w[i] = None;
if (GetDecor(t,right_buttons[i].flags)&MWMDecorMaximize)
t->right_w[i] = None;
}
}
if (t->buttons & BUTTON1) t->left_w[0]=None;
if (t->buttons & BUTTON3) t->left_w[1]=None;
if (t->buttons & BUTTON5) t->left_w[2]=None;
if (t->buttons & BUTTON7) t->left_w[3]=None;
if (t->buttons & BUTTON9) t->left_w[4]=None;
if (t->buttons & BUTTON2) t->right_w[0]=None;
if (t->buttons & BUTTON4) t->right_w[1]=None;
if (t->buttons & BUTTON6) t->right_w[2]=None;
if (t->buttons & BUTTON8) t->right_w[3]=None;
if (t->buttons & BUTTON10)t->right_w[4]=None;
t->nr_left_buttons = Scr.nr_left_buttons;
t->nr_right_buttons = Scr.nr_right_buttons;
for(i=0;i<Scr.nr_left_buttons;i++)
if(t->left_w[i] == None)
t->nr_left_buttons--;
for(i=0;i<Scr.nr_right_buttons;i++)
if(t->right_w[i] == None)
t->nr_right_buttons--;
if(tflags & MWM_BORDER_FLAG)
t->bw = 0;
else if(t->boundary_width <= 0)
{
t->boundary_width = 0;
t->bw = 0;
}
else
{
t->bw = BW;
t->boundary_width = t->boundary_width - 1;
}
if(t->title_height > 0)
t->title_height += t->bw;
if(t->boundary_width == 0)
t->flags &= ~BORDER;
}
/*
** seemed kind of silly to have check_allowed_function and
** check_allowed_function2 partially overlapping in their checks, so I
** combined them here and made them wrapper functions instead.
*/
static int check_if_function_allowed(int function,
FvwmWindow *t,
MenuItem *mi)
{
if (t) /* should always be ok */
{
if (!mi) /* no menu item, must be exec check, so allow overrides */
{
if(t->flags & HintOverride)
return 1;
}
switch(function)
{
case F_DELETE:
if (!(t->flags & DoesWmDeleteWindow))
return 0;
/* fall through to close clause */
case F_CLOSE:
if (!(t->functions & MWM_FUNC_CLOSE))
return 0;
break;
case F_DESTROY: /* shouldn't destroy always be allowed??? */
if (!(t->functions & MWM_FUNC_CLOSE))
return 0;
break;
case F_RESIZE:
if (!(t->functions & MWM_FUNC_RESIZE))
return 0;
break;
case F_ICONIFY:
if ((!(t->flags & ICONIFIED))&&
(!(t->functions & MWM_FUNC_MINIMIZE)))
return 0;
break;
case F_MAXIMIZE:
if (!(t->functions & MWM_FUNC_MAXIMIZE))
return 0;
break;
case F_MOVE:
/* Move is a funny hint. Keeps it out of the menu, but you're
* still allowed to move. */
if((!(t->functions & MWM_FUNC_MOVE))&&mi)
return 0;
break;
case F_FUNCTION:
/* Hard part! What to do now? */
/* Hate to do it, but for lack of a better idea,
* check based on the menu entry name */
/* Complex functions are a little tricky, ignore them if no menu item*/
if (mi && mi->item)
{
if((!(t->functions & MWM_FUNC_MOVE))&&
(StrEquals(mi->item,MOVE_STRING)))
return 0;
if((!(t->functions & MWM_FUNC_RESIZE))&&
(StrEquals(mi->item,RESIZE_STRING1)))
return 0;
if((!(t->functions & MWM_FUNC_RESIZE))&&
(StrEquals(mi->item,RESIZE_STRING2)))
return 0;
if((!(t->functions & MWM_FUNC_MINIMIZE))&&
(!(t->flags & ICONIFIED))&&
(StrEquals(mi->item,MINIMIZE_STRING)))
return 0;
if((!(t->functions & MWM_FUNC_MINIMIZE))&&
(StrEquals(mi->item,MINIMIZE_STRING2)))
return 0;
if((!(t->functions & MWM_FUNC_MAXIMIZE))&&
(StrEquals(mi->item,MAXIMIZE_STRING)))
return 0;
if((!(t->functions & MWM_FUNC_CLOSE))&&
(StrEquals(mi->item,CLOSE_STRING1)))
return 0;
if((!(t->functions & MWM_FUNC_CLOSE))&&
(StrEquals(mi->item,CLOSE_STRING2)))
return 0;
if((!(t->functions & MWM_FUNC_CLOSE))&&
(StrEquals(mi->item,CLOSE_STRING3)))
return 0;
if((!(t->functions & MWM_FUNC_CLOSE))&&
(StrEquals(mi->item,CLOSE_STRING4)))
return 0;
}
break;
default:
break;
} /* end of switch */
} /* end of if */
/* if we fell through, just return a 1 */
return 1;
}
/****************************************************************************
*
* Checks the function described in menuItem mi, and sees if it
* is an allowed function for window Tmp_Win,
* according to the motif way of life.
*
* This routine is used to determine whether or not to grey out menu items.
*
****************************************************************************/
int check_allowed_function(MenuItem *mi)
{
return check_if_function_allowed(mi->func_type,Tmp_win,mi);
}
/****************************************************************************
*
* Checks the function "function", and sees if it
* is an allowed function for window t, according to the motif way of life.
* This routine is used to decide if we should refuse to perform a function.
*
****************************************************************************/
int check_allowed_function2(int function, FvwmWindow *t)
{
return check_if_function_allowed(function,t,NULL);
}
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