Bugfix: Store width_factor/height_factor per workspace, not per container

This is a relatively big change, however all cases should be handled by
now.

Because the function to do graphical resizing got rather large, I’ve created
a new file src/resize.c for it.

This fixes ticket #35.

include/commands.h

@@ -8,11 +8,11 @@
  * See file LICENSE for license information.
  *
  */
-#include <xcb/xcb.h>
-
 #ifndef _COMMANDS_H
 #define _COMMANDS_H
 
+#include <xcb/xcb.h>
+
 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction);
 
 /** Switches to the given workspace */

include/data.h

@@ -174,6 +174,12 @@ struct Workspace {
         /* This is a two-dimensional dynamic array of Container-pointers. I’ve always wanted
          * to be a three-star programmer :) */
         Container ***table;
+
+        /* width_factor and height_factor contain the amount of space (percentage) a column/row
+           has of all the space which is available for resized windows. This ensures that
+           non-resized windows (newly opened, for example) have the same size as always */
+        float *width_factor;
+        float *height_factor;
 };
 
 /*
@@ -312,11 +318,6 @@ struct Container {
         /* Width/Height of the container. Changeable by the user */
         int width;
         int height;
-        /* width_factor and height_factor contain the amount of space (percentage) a window
-           has of all the space which is available for resized windows. This ensures that
-           non-resized windows (newly opened, for example) have the same size as always */
-        float width_factor;
-        float height_factor;
 
         /* When in stacking mode, we draw the titlebars of each client onto a separate window */
         struct Stack_Window stack_win;

include/layout.h

@@ -15,11 +15,11 @@
 
 /**
  * Gets the unoccupied space (= space which is available for windows which were resized by the user)
- * for the given row. This is necessary to render both, customly resized windows and never touched
+ * This is necessary to render both, customly resized windows and never touched
  * windows correctly, meaning that the aspect ratio will be maintained when opening new windows.
  *
  */
-int get_unoccupied_x(Workspace *workspace, int row);
+int get_unoccupied_x(Workspace *workspace);
 
 /**
  * (Re-)draws window decorations for a given Client onto the given drawable/graphic context.

include/resize.h

@@ -0,0 +1,27 @@
+/*
+ * vim:ts=8:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ *
+ * (c) 2009 Michael Stapelberg and contributors
+ *
+ * See file LICENSE for license information.
+ *
+ */
+
+#ifndef _RESIZE_H
+#define _RESIZE_H
+
+#include <xcb/xcb.h>
+
+typedef enum { O_HORIZONTAL, O_VERTICAL } resize_orientation_t;
+
+/**
+ * Renders the resize window between the first/second container and resizes
+ * the table column/row.
+ *
+ */
+int resize_graphical_handler(xcb_connection_t *conn, Container *first, Container *second,
+                             resize_orientation_t orientation, xcb_button_press_event_t *event);
+
+#endif