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grab display across managing each screen; XGetInputFocus() on startup.

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2002-07-20  Havoc Pennington  <hp@pobox.com>

	* src/display.c (meta_display_open): grab display across managing
	each screen; XGetInputFocus() on startup.

2002-07-19  Havoc Pennington  <hp@pobox.com>

	* src/window.c (meta_window_configure_request): disable configure
	requests during a user move/resize operation, mostly a workaround
	for stoopid apps.
This commit is contained in:
Havoc Pennington 2002-07-24 15:41:44 +00:00 committed by Havoc Pennington
parent 6f6e533380
commit 78a2866980
5 changed files with 264 additions and 5 deletions
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11
ChangeLog
View File

@ -1,3 +1,14 @@
2002-07-20 Havoc Pennington <hp@pobox.com>
* src/display.c (meta_display_open): grab display across managing
each screen; XGetInputFocus() on startup.
2002-07-19 Havoc Pennington <hp@pobox.com>
* src/window.c (meta_window_configure_request): disable configure
requests during a user move/resize operation, mostly a workaround
for stoopid apps.
2002-07-24 jacob berkman <jacob@ximian.com>
* configure.in: fix x11 header checks when x11 is not in the

147
src/constraints.c Normal file
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@ -0,0 +1,147 @@
/* Metacity size/position constraints */
/*
* Copyright (C) 2002 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <constraints.h>
/* The way this code works was suggested by Owen Taylor.
*
* For any move_resize, we determine which variables are "free
* variables" - stated another way, which edges of the window are
* moving. During the move resize, we only want to modify those
* variables; otherwise the constraint process can have peculiar side
* effects when the size and position constraints interact. For
* example, resizing a window from the top might go wrong when
* position constraints apply to the top edge, and result in the
* bottom edge moving downward while the top stays fixed.
*
* After selecting the variables we plan to vary, we define
* each constraint on the window in terms of those variables.
*
* Trivial example, say we are resizing vertically from the top of the
* window. In that case we are applying the user's mouse motion delta
* to an original size and position, note that dy is positive to
* resize downward:
*
* new_height = orig_height - dy;
* new_y = orig_y + dy;
*
* A constraint that the position can't go above the top panel would
* look like this:
*
* new_y > screen_top_bound
*
* Substitute:
*
* orig_y + dy > screen_top_bound
*
* Find the "boundary point" by changing to an equality:
*
* orig_y + dy = screen_top_bound
*
* Solve:
*
* dy = screen_top_bound - orig_y
*
* Plug that back into the size/position computations:
*
* new_y = orig_y + screen_top_bound - orig_y
* new_y = screen_top_bound
* new_height = orig_height - screen_top_bound + orig_y;
*
* This way the constraint is applied simultaneously to size/position,
* so you aren't running the risk of constraining one but still
* changing the other. i.e. we've converted an operation that may
* modify both the Y position and the height of the window into an
* operation that modifies a single variable, dy. That variable is
* then constrained, rather than the constraining the Y pos and height
* separately.
*
*/
/* To adjust for window gravity, such as a client moving itself to the
* southeast corner, we want to compute the gravity reference point
* - (screen_width,screen_height) in the SE corner case - using the
* size the client had in its configure request. But then we want
* to compute the actual position we intend to land on using
* the real constrained dimensions of the window.
*
* So for a window being placed in the SE corner and simultaneously
* resized, we get the gravity reference point, then compute where the
* window should go to maintain that ref. point at its current size
* instead of at the requested size, and conceptually move the window
* to the requested ref. point but at its current size, without
* applying any constraints. Then we constrain it with the top and
* left edges as the edges that vary, with a dx/dy that are the delta
* from the current size to the requested size.
*
*/
typedef void (* MetaConstraintFunc) (MetaWindow *window,
MetaFrameGeometry *fgeom,
const MetaRectangle *orig,
MetaRectangle *new);
enum
{
VERTICAL_TOP,
VERTICAL_BOTTOM,
VERTICAL_CENTER
};
enum
{
HORIZONTAL_LEFT,
HORIZONTAL_RIGHT,
HORIZONTAL_CENTER
};
/* Maximization constraint:
*
* new_x = workarea_x + frame_left
* new_y = workarea_y + frame_top
* new_w = workarea_w - frame_left - frame_right
* new_h = workarea_h - frame_top - frame_bottom
*
* No need to do anything hard because it just locks specific
* size/pos
*/
void
meta_window_constrain (MetaWindow *window,
MetaFrameGeometry *fgeom,
int resize_gravity,
const MetaRectangle *orig,
MetaRectangle *new)
{
}

44
src/constraints.h Normal file
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@ -0,0 +1,44 @@
/* Metacity size/position constraints */
/*
* Copyright (C) 2002 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef META_CONSTRAINTS_H
#define META_CONSTRAINTS_H
#include "util.h"
#include "window.h"
void meta_window_constrain (MetaWindow *window,
MetaFrameGeometry *fgeom,
int resize_gravity,
const MetaRectangle *orig,
MetaRectangle *new);
#endif /* META_CONSTRAINTS_H */

22
src/display.c
View File

@ -469,7 +469,8 @@ meta_display_open (const char *name)
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
}
meta_display_grab (display);
/* Now manage all existing windows */
tmp = display->screens;
while (tmp != NULL)
@ -477,6 +478,25 @@ meta_display_open (const char *name)
meta_screen_manage_all_windows (tmp->data);
tmp = tmp->next;
}
{
Window focus;
int ret_to;
/* kinda bogus because GetInputFocus has no possible errors */
meta_error_trap_push (display);
focus = None;
ret_to = RevertToNone;
XGetInputFocus (display->xdisplay, &focus, &ret_to);
/* Force a new FocusIn (does this work?) */
XSetInputFocus (display->xdisplay, focus, ret_to, CurrentTime);
meta_error_trap_pop (display);
}
meta_display_ungrab (display);
return TRUE;
}

45
src/window.c
View File

@ -2944,6 +2944,37 @@ meta_window_configure_request (MetaWindow *window,
int x, y, width, height;
gboolean only_resize;
gboolean allow_position_change;
gboolean in_grab_op;
/* We ignore configure requests while the user is moving/resizing
* the window, since these represent the app sucking and fighting
* the user, most likely due to a bug in the app (e.g. pfaedit
* seemed to do this)
*
* Still have to do the ConfigureNotify and all, but pretend the
* app asked for the current size/position instead of the new one.
*/
in_grab_op = FALSE;
if (window->display->grab_op != META_GRAB_OP_NONE &&
window == window->display->grab_window)
{
switch (window->display->grab_op)
{
case META_GRAB_OP_MOVING:
case META_GRAB_OP_RESIZING_SE:
case META_GRAB_OP_RESIZING_S:
case META_GRAB_OP_RESIZING_SW:
case META_GRAB_OP_RESIZING_N:
case META_GRAB_OP_RESIZING_NE:
case META_GRAB_OP_RESIZING_NW:
case META_GRAB_OP_RESIZING_W:
case META_GRAB_OP_RESIZING_E:
in_grab_op = TRUE;
break;
default:
break;
}
}
/* it's essential to use only the explicitly-set fields,
* and otherwise use our current up-to-date position.
@ -2978,6 +3009,9 @@ meta_window_configure_request (MetaWindow *window,
{
allow_position_change = TRUE;
}
if (in_grab_op)
allow_position_change = FALSE;
if (allow_position_change)
{
@ -3009,11 +3043,14 @@ meta_window_configure_request (MetaWindow *window,
width = window->rect.width;
height = window->rect.height;
if (event->xconfigurerequest.value_mask & CWWidth)
width = event->xconfigurerequest.width;
if (!in_grab_op)
{
if (event->xconfigurerequest.value_mask & CWWidth)
width = event->xconfigurerequest.width;
if (event->xconfigurerequest.value_mask & CWHeight)
height = event->xconfigurerequest.height;
if (event->xconfigurerequest.value_mask & CWHeight)
height = event->xconfigurerequest.height;
}
/* ICCCM 4.1.5 */