Quoth I,

I'll see if I can come up with a fix.

  So let it be written, so let it be done.
From 8364d329a60e83bd3281ce0f1ffe5847f4b2df0c Mon Sep 17 00:00:00 2001
From: Iain Patterson <[email protected]>
Date: Tue, 26 Jun 2012 16:20:43 +0100
Subject: [PATCH] More (un)maximize tweaks.

Update the saved X co-ordinate of a window which was moved when
maximized (only) vertically so that unmaximizing the window restores
its dimensions without warping it back to its previous X position.
Similarly update the saved Y co-ordinate of a window which was
moved when maximized (only) horizontally.

Handle Maximus as a special case.  We remember the Maximusized X and Y
co-ordinates then adjust the restored co-ordinates relative to the
delta between the window's position just after Maximusizing and its
position just before restoring.  So for example if a window is
Maximusized, moved 100 pixels to the left and restored, it will end
up 100 pixels left of its original geometry.

Also fix "jumping window" bug reported by Christian Wittmer:

This "jumping window" happens only when you
1) open new xterm (STRG +n)
2) current position is (+64, +0)
3) maximize window vertically
4) undo maximizing
5) move window to the right or left (up or down as you like)
I moved right to (+450, +0)
6) maximize vertically again
7) and undo maximizing
8) window jumps back to (+64, ..) position

If you move a new opened window to a new position (e.g. +200, +200)
and then start with "3)". window is jumping back "+200, +200"
---
 src/actions.c |   59 +++++++++++++++++++++++++++++++++++++++++++++++----------
 src/actions.h |    7 +++++++
 src/moveres.c |    6 ++++++
 src/window.h  |    3 +++
 4 files changed, 65 insertions(+), 10 deletions(-)

diff --git a/src/actions.c b/src/actions.c
index 881448f..988e90a 100644
--- a/src/actions.c
+++ b/src/actions.c
@@ -287,14 +287,20 @@ void wUnshadeWindow(WWindow *wwin)
 /* Set the old coordinates using the current values */
 static void save_old_geometry(WWindow *wwin, int directions)
 {
-       if (directions & MAX_HORIZONTAL || ! wwin->old_geometry.width) {
-               wwin->old_geometry.width = wwin->client.width;
+       /* never been saved? */
+       if (! wwin->old_geometry.width)
+               directions |= SAVE_GEOMETRY_X | SAVE_GEOMETRY_WIDTH;
+       if (! wwin->old_geometry.height)
+               directions |= SAVE_GEOMETRY_Y | SAVE_GEOMETRY_HEIGHT;
+
+       if (directions & SAVE_GEOMETRY_X)
                wwin->old_geometry.x = wwin->frame_x;
-       }
-       if (directions & MAX_VERTICAL || ! wwin->old_geometry.height) {
-               wwin->old_geometry.height = wwin->client.height;
+       if (directions & SAVE_GEOMETRY_Y)
                wwin->old_geometry.y = wwin->frame_y;
-       }
+       if (directions & SAVE_GEOMETRY_WIDTH)
+               wwin->old_geometry.width = wwin->client.width;
+       if (directions & SAVE_GEOMETRY_HEIGHT)
+               wwin->old_geometry.height = wwin->client.height;
 }
 
 static void remember_geometry(WWindow *wwin, int *x, int *y, int *w, int *h)
@@ -312,6 +318,27 @@ static void remember_geometry(WWindow *wwin, int *x, int 
*y, int *w, int *h)
        *h = wwin->old_geometry.height ? wwin->old_geometry.height : 
wwin->client.height;
 }
 
+/* Remember geometry for unmaximizing */
+void update_saved_geometry(WWindow *wwin)
+{
+       /* NOT if we aren't already maximized
+        * we'll save geometry when maximizing */
+       if (!wwin->flags.maximized)
+               return;
+
+       /* NOT if we are fully maximized */
+       if ((wwin->flags.maximized & MAX_MAXIMUS) ||
+           ((wwin->flags.maximized & MAX_HORIZONTAL) &&
+           (wwin->flags.maximized & MAX_VERTICAL)))
+               return;
+
+       /* save the co-ordinate in the axis in which we AREN'T maximized */
+       if (wwin->flags.maximized & MAX_HORIZONTAL)
+               save_old_geometry(wwin, SAVE_GEOMETRY_Y);
+       if (wwin->flags.maximized & MAX_VERTICAL)
+               save_old_geometry(wwin, SAVE_GEOMETRY_X);
+}
+
 #define IS_MAX_HORIZONTALLY(directions) ((directions & MAX_HORIZONTAL) | 
(directions & MAX_LEFTHALF) | (directions & MAX_RIGHTHALF))
 void wMaximizeWindow(WWindow *wwin, int directions)
 {
@@ -336,17 +363,20 @@ void wMaximizeWindow(WWindow *wwin, int directions)
        adj_size = FRAME_BORDER_WIDTH * 2 * has_border;
 
        /* save old coordinates before we change the current values
+        * always if the window is not currently maximized at all
         * but never if the window has been Maximusized */
-       if (!(wwin->flags.old_maximized & MAX_MAXIMUS)) {
+       if (!wwin->flags.maximized)
+               save_directions |= SAVE_GEOMETRY_ALL;
+       else if (!(wwin->flags.old_maximized & MAX_MAXIMUS)) {
                if ((directions & MAX_VERTICAL) &&
                    !(wwin->flags.maximized & MAX_VERTICAL))
-                       save_directions |= MAX_VERTICAL;
+                       save_directions |= SAVE_GEOMETRY_Y | 
SAVE_GEOMETRY_HEIGHT;
                if (IS_MAX_HORIZONTALLY(directions) &&
                    !IS_MAX_HORIZONTALLY(wwin->flags.maximized))
-                       save_directions |= MAX_HORIZONTAL;
+                       save_directions |= SAVE_GEOMETRY_X | 
SAVE_GEOMETRY_WIDTH;
        }
        if ((directions & MAX_MAXIMUS) && !wwin->flags.maximized)
-               save_directions |= MAX_VERTICAL | MAX_HORIZONTAL;
+               save_directions |= SAVE_GEOMETRY_ALL;
        save_old_geometry(wwin, save_directions);
 
        totalArea.x1 = 0;
@@ -445,6 +475,8 @@ void wMaximizeWindow(WWindow *wwin, int directions)
                        new_y -= wwin->frame->top_width;
                        new_height += wwin->frame->top_width - 1;
                }
+               wwin->maximus_x = new_x;
+               wwin->maximus_y = new_y;
                wwin->flags.old_maximized |= MAX_MAXIMUS;
        }
 
@@ -673,9 +705,16 @@ void wUnmaximizeWindow(WWindow *wwin)
                wwin->flags.skip_next_animation = 1;
                wUnshadeWindow(wwin);
        }
+
        /* Use old coordinates if they are set, current values otherwise */
        remember_geometry(wwin, &x, &y, &w, &h);
 
+       /* unMaximusize relative to original position */
+       if (wwin->flags.maximized & MAX_MAXIMUS) {
+               x += wwin->frame_x - wwin->maximus_x;
+               y += wwin->frame_y - wwin->maximus_y;
+       }
+
        wwin->flags.maximized = 0;
        wwin->flags.old_maximized = 0;
        wWindowConfigure(wwin, x, y, w, h);
diff --git a/src/actions.h b/src/actions.h
index 719df2e..55de740 100644
--- a/src/actions.h
+++ b/src/actions.h
@@ -31,6 +31,12 @@
 #define MAX_IGNORE_XINERAMA    (1 << 5)
 #define MAX_KEYBOARD           (1 << 6)
 
+#define SAVE_GEOMETRY_X        (1 << 0)
+#define SAVE_GEOMETRY_Y        (1 << 1)
+#define SAVE_GEOMETRY_WIDTH    (1 << 2)
+#define SAVE_GEOMETRY_HEIGHT   (1 << 3)
+#define SAVE_GEOMETRY_ALL      SAVE_GEOMETRY_X | SAVE_GEOMETRY_Y | 
SAVE_GEOMETRY_WIDTH | SAVE_GEOMETRY_HEIGHT
+
 void wSetFocusTo(WScreen *scr, WWindow *wwin);
 
 int wMouseMoveWindow(WWindow *wwin, XEvent *ev);
@@ -71,6 +77,7 @@ void wFullscreenWindow(WWindow *wwin);
 void wUnfullscreenWindow(WWindow *wwin);
 
 void animateResize(WScreen *scr, int x, int y, int w, int h, int fx, int fy, 
int fw, int fh);
+void update_saved_geometry(WWindow *wwin);
 
 #endif
 
diff --git a/src/moveres.c b/src/moveres.c
index 3d3ff7e..59dd0d2 100644
--- a/src/moveres.c
+++ b/src/moveres.c
@@ -1535,6 +1535,8 @@ int wKeyboardMoveResizeWindow(WWindow * wwin)
                                wArrangeIcons(scr, True);
                        }
 
+                       update_saved_geometry(wwin);
+
                        return 1;
                }
        }
@@ -1796,6 +1798,10 @@ int wMouseMoveWindow(WWindow * wwin, XEvent * ev)
            head != wGetHeadForWindow(wwin)) {
                wArrangeIcons(scr, True);
        }
+
+       if (started)
+               update_saved_geometry(wwin);
+
        return started;
 }
 
diff --git a/src/window.h b/src/window.h
index 99e1c24..cdb5bc7 100644
--- a/src/window.h
+++ b/src/window.h
@@ -199,6 +199,9 @@ typedef struct WWindow {
         unsigned int width, height;    /* original geometry of the window */
     } bfs_geometry;                   /* (before fullscreen) */
 
+    int maximus_x;                    /* size after Maximusizing */
+    int maximus_y;
+
     /* client window info */
     short old_border_width;           /* original border width of client_win*/
     Window client_win;                /* the window we're managing */
-- 
1.7.10.2

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