Add _NET_WM_ICON_GEOMETRY atom.

2001-08-05  Anders Carlsson  <andersca@gnu.org>

	* src/display.h, src/display.c: Add _NET_WM_ICON_GEOMETRY atom.

	* src/window.c (meta_window_calc_showing): See if the window has
	an icon geometry and show a morphing animation from the window's
	coordinates to the icon's coordinates.
	(meta_window_get_icon_geometry): New function that fetches a
	window's icon geometry.

	* src/Makefile.am: Add effects.[ch].

        * src/effects.c: New file with cool effects.

7 files changed, 266 insertions, 9 deletions

diff --git a/ChangeLog b/ChangeLog
index ccd06c5d..f8f01e38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,17 @@
+2001-08-05  Anders Carlsson  <andersca@gnu.org>
+
+	* src/display.h, src/display.c: Add _NET_WM_ICON_GEOMETRY atom.
+
+	* src/window.c (meta_window_calc_showing): See if the window has
+	an icon geometry and show a morphing animation from the window's
+	coordinates to the icon's coordinates.
+	(meta_window_get_icon_geometry): New function that fetches a
+	window's icon geometry.
+
+	* src/Makefile.am: Add effects.[ch].
+	
+        * src/effects.c: New file with cool effects.
+
 2001-08-03  Havoc Pennington  <hp@pobox.com>
 
 	* src/keybindings.c: Add Alt + left/right arrow to 
diff --git a/src/Makefile.am b/src/Makefile.am
index dbd3e163..bec595fa 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -9,6 +9,8 @@ metacity_SOURCES= 				\
 	core.h					\
 	display.c				\
 	display.h				\
+	effects.c				\
+	effects.h				\
 	errors.c				\
 	errors.h				\
 	eventqueue.c				\
diff --git a/src/display.c b/src/display.c
index ccc82e85..66916215 100644
--- a/src/display.c
+++ b/src/display.c
@@ -130,7 +130,8 @@ meta_display_open (const char *name)
     "_WIN_PROTOCOLS",
     "_WIN_SUPPORTING_WM_CHECK",
     "_NET_WM_ICON_NAME",
-    "_NET_WM_ICON"
+    "_NET_WM_ICON",
+    "_NET_WM_ICON_GEOMETRY"
   };
   Atom atoms[G_N_ELEMENTS(atom_names)];
   
@@ -212,6 +213,7 @@ meta_display_open (const char *name)
   display->atom_win_supporting_wm_check = atoms[35];
   display->atom_net_wm_icon_name = atoms[36];
   display->atom_net_wm_icon = atoms[37];
+  display->atom_net_wm_icon_geometry = atoms[38];
   
   /* Offscreen unmapped window used for _NET_SUPPORTING_WM_CHECK,
    * created in screen_new
diff --git a/src/display.h b/src/display.h
index c04d9654..df8dd291 100644
--- a/src/display.h
+++ b/src/display.h
@@ -95,6 +95,7 @@ struct _MetaDisplay
   Atom atom_win_supporting_wm_check;
   Atom atom_net_wm_icon_name;
   Atom atom_net_wm_icon;
+  Atom atom_net_wm_icon_geometry;
   
   /* This is the actual window from focus events,
    * not the one we last set
diff --git a/src/effects.c b/src/effects.c
new file mode 100644
index 00000000..b5d7150b
--- /dev/null
+++ b/src/effects.c
@@ -0,0 +1,124 @@
+/* Metacity animation effects */
+
+/* 
+ * Copyright (C) 2001 Anders Carlsson, Havoc Pennington
+ * 
+ * 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 "effects.h"
+#include "display.h"
+
+typedef struct
+{
+  MetaScreen *screen;
+  
+  GC gc;
+
+  int step;
+  int steps;
+  
+  double current_x, current_y;
+  double current_width, current_height;
+  
+  double delta_x, delta_y;
+  double delta_width, delta_height;
+} BoxAnimationContext;
+
+static gboolean
+effects_draw_box_animation_timeout (BoxAnimationContext *context)
+{
+  if (context->step == 0)
+    {
+      /* It's our first time, grab the X server */
+      meta_display_grab (context->screen->display);
+    }
+  else
+    {
+      /* Restore the previously drawn background */
+      XDrawRectangle (context->screen->display->xdisplay,
+                      context->screen->xroot,
+                      context->gc,
+                      context->current_x, context->current_y,
+                      context->current_width, context->current_height);
+    }
+
+  /* Return if we're done */
+  if (context->step == context->steps)
+    {
+      meta_display_ungrab (context->screen->display);
+      XFreeGC (context->screen->display->xdisplay,
+               context->gc);
+      g_free (context);
+      return FALSE;
+    }
+
+  context->current_x += context->delta_x;
+  context->current_y += context->delta_y;
+  context->current_width += context->delta_width;
+  context->current_height += context->delta_height;
+	
+  /* Draw the rectangle */
+  XDrawRectangle (context->screen->display->xdisplay,
+                  context->screen->xroot,
+                  context->gc,
+                  context->current_x, context->current_y,
+                  context->current_width, context->current_height);  
+
+  context->step += 1;
+
+  return TRUE;
+}
+
+void
+meta_effects_draw_box_animation (MetaScreen *screen,
+                                 MetaRectangle *initial_rect,
+                                 MetaRectangle *destination_rect,
+                                 int steps,
+                                 int delay)
+{
+  BoxAnimationContext *context;
+  XGCValues gc_values;
+
+  /* Create the animation context */
+  context = g_new (BoxAnimationContext, 1);
+	
+  gc_values.subwindow_mode = IncludeInferiors;
+  gc_values.function = GXinvert;
+	
+  /* Create a gc for the root window */
+  context->screen = screen;
+  context->gc = XCreateGC (screen->display->xdisplay,
+                           screen->xroot,
+                           GCSubwindowMode | GCFunction,
+                           &gc_values);
+  context->step = 0;
+  context->steps = steps;
+  context->delta_x = (destination_rect->x - initial_rect->x) / (double)steps;
+  context->delta_y = (destination_rect->y - initial_rect->y) / (double)steps;
+  context->delta_width = (destination_rect->width - initial_rect->width) / (double)steps;
+  context->delta_height = (destination_rect->height - initial_rect->height) / (double)steps;
+  
+  context->current_x = initial_rect->x;
+  context->current_y = initial_rect->y;
+  context->current_width = initial_rect->width;
+  context->current_height = initial_rect->height;
+  
+  /* Add the timeout */
+  g_timeout_add (delay,
+                 (GSourceFunc)effects_draw_box_animation_timeout,
+                 context);
+}
diff --git a/src/effects.h b/src/effects.h
new file mode 100644
index 00000000..d564103e
--- /dev/null
+++ b/src/effects.h
@@ -0,0 +1,37 @@
+/* Metacity animation effects */
+
+/* 
+ * Copyright (C) 2001 Anders Carlsson, Havoc Pennington
+ * 
+ * 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_EFFECTS_H
+#define META_EFFECTS_H
+
+#include "util.h"
+#include "screen.h"
+
+#define META_MINIMIZE_ANIMATION_STEPS 16
+#define META_MINIMIZE_ANIMATION_DELAY 20
+
+void meta_effects_draw_box_animation (MetaScreen    *screen,
+                                      MetaRectangle *initial_rect,
+                                      MetaRectangle *destination_rect,
+                                      int            steps,
+                                      int            delay);
+
+#endif /* META_EFFECTS_H */
diff --git a/src/window.c b/src/window.c
index e13bbd40..917ddee0 100644
--- a/src/window.c
+++ b/src/window.c
@@ -1,7 +1,7 @@
 /* Metacity X managed windows */
 
 /* 
- * Copyright (C) 2001 Havoc Pennington
+ * Copyright (C) 2001 Havoc Pennington, Anders Carlsson
  * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -29,6 +29,7 @@
 #include "ui.h"
 #include "place.h"
 #include "session.h"
+#include "effects.h"
 
 #include <X11/Xatom.h>
 
@@ -70,6 +71,9 @@ static gboolean process_property_notify   (MetaWindow     *window,
 static void     meta_window_show          (MetaWindow     *window);
 static void     meta_window_hide          (MetaWindow     *window);
 
+static gboolean meta_window_get_icon_geometry (MetaWindow    *window,
+                                               MetaRectangle *rect);
+
 static void adjust_for_gravity               (MetaWindow        *window,
                                               MetaFrameGeometry *fgeom,
                                               gboolean           coords_assume_border,
@@ -758,6 +762,41 @@ meta_window_calc_showing (MetaWindow  *window)
   
   if (window->minimized || !on_workspace)
     {
+      /* Really this effects code should probably
+       * be in meta_window_hide so the window->mapped
+       * test isn't duplicated here. Anyhow, we animate
+       * if we are mapped now, we are supposed to
+       * be minimized, and we are on the current workspace.
+       */
+      if (on_workspace && window->minimized && window->mapped)
+        {
+	  MetaRectangle icon_rect, window_rect;
+	  gboolean result;
+	  
+	  /* Check if the window has an icon geometry */
+	  result = meta_window_get_icon_geometry (window, &icon_rect);
+          
+          if (!result)
+            {
+              /* just animate into the corner somehow - maybe
+               * not a good idea...
+               */              
+              icon_rect.x = window->screen->width;
+              icon_rect.y = window->screen->height;
+              icon_rect.width = 1;
+              icon_rect.height = 1;
+            }
+
+          meta_window_get_outer_rect (window, &window_rect);
+          
+          /* Draw a nice cool animation */
+          meta_effects_draw_box_animation (window->screen,
+                                           &window_rect,
+                                           &icon_rect,
+                                           META_MINIMIZE_ANIMATION_STEPS,
+                                           META_MINIMIZE_ANIMATION_DELAY);
+	}
+
       meta_window_hide (window);
     }
   else
@@ -2668,7 +2707,7 @@ update_net_wm_state (MetaWindow *window)
    * clients don't change the property.
    */
   Atom type;
-  gint format;
+  int format;
   gulong n_atoms;
   gulong bytes_after;
   Atom *atoms;
@@ -2767,7 +2806,7 @@ update_mwm_hints (MetaWindow *window)
 {
   MotifWmHints *hints;
   Atom type;
-  gint format;
+  int format;
   gulong nitems;
   gulong bytes_after;
   int result;
@@ -2884,6 +2923,44 @@ update_mwm_hints (MetaWindow *window)
   return Success;
 }
 
+static gboolean
+meta_window_get_icon_geometry (MetaWindow    *window,
+                               MetaRectangle *rect)
+{
+  Atom type;
+  int format;
+  gulong nitems;
+  gulong bytes_after;
+  gulong *geometry;
+  int result;
+  
+  meta_error_trap_push (window->display);
+  type = None;
+  XGetWindowProperty (window->display->xdisplay,
+		      window->xwindow,
+		      window->display->atom_net_wm_icon_geometry,
+		      0, G_MAXLONG,
+		      False, XA_CARDINAL, &type, &format, &nitems,
+		      &bytes_after, ((guchar **)&geometry));
+  
+  result = meta_error_trap_pop (window->display);
+  
+  if (result != Success || type != XA_CARDINAL || nitems != 4)
+    return FALSE;  
+  
+  if (rect)
+    {
+      rect->x = geometry[0];
+      rect->y = geometry[1];
+      rect->width = geometry[2];
+      rect->height = geometry[3];
+    }
+
+  XFree (geometry);
+
+  return TRUE;
+}
+
 static int
 update_wm_class (MetaWindow *window)
 {
@@ -2933,7 +3010,7 @@ read_string_prop (MetaDisplay *display,
                   char       **strp)
 {
   Atom type;
-  gint format;
+  int format;
   gulong nitems;
   gulong bytes_after;
   guchar *str;
@@ -2966,7 +3043,7 @@ read_client_leader (MetaDisplay *display,
                     Window       xwindow)
 {
   Atom type;
-  gint format;
+  int format;
   gulong nitems;
   gulong bytes_after;
   Window *leader;
@@ -3094,7 +3171,7 @@ get_cardinal (MetaDisplay *display,
               gulong     *val)
 {  
   Atom type;
-  gint format;
+  int format;
   gulong nitems;
   gulong bytes_after;
   gulong *num;
@@ -3137,7 +3214,7 @@ static int
 update_net_wm_type (MetaWindow *window)
 {
   Atom type;
-  gint format;
+  int format;
   gulong n_atoms;
   gulong bytes_after;
   Atom *atoms;
@@ -3482,7 +3559,7 @@ constrain_size (MetaWindow *window,
 
   /* frame member variables should NEVER be used in here */
   
-#define FLOOR(value, base)	( ((gint) ((value) / (base))) * (base) )
+#define FLOOR(value, base)	( ((int) ((value) / (base))) * (base) )
   
   /* Get the allowed size ranges, considering maximized, etc. */
   fullw = window->screen->active_workspace->workarea.width;