Support resizing frames and windows pixelwise.

[bpt/emacs.git] / src / widget.c

diff --git a/src/widget.c b/src/widget.c
index 1f472c6..89b43fd 100644 (file)
--- a/src/widget.c
+++ b/src/widget.c
@@ -1,5 +1,5 @@
 /* The emacs frame widget.
-   Copyright (C) 1992-1993, 2000-2012  Free Software Foundation, Inc.
+   Copyright (C) 1992-1993, 2000-2013 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -412,7 +412,7 @@ set_frame_size (EmacsFrame ew)
 #if 0 /* This can run Lisp code, and it is dangerous to give
         out the frame to Lisp code before it officially exists.
         This is handled in Fx_create_frame so not needed here.  */
-    change_frame_size (f, h, w, 1, 0, 0);
+    change_frame_size (f, w, h, 1, 0, 0, 0);
 #endif
     char_to_pixel_size (ew, w, h, &pixel_width, &pixel_height);
     ew->core.width = pixel_width;
@@ -467,7 +467,7 @@ update_wm_hints (EmacsFrame ew)
   if (! wmshell) return;
 
 #if 0
-  check_frame_size (ew->emacs_frame.frame, &min_rows, &min_cols);
+  check_frame_size (ew->emacs_frame.frame, &min_cols, &min_rows, 0);
 #endif
 
   pixel_to_char_size (ew, ew->core.width, ew->core.height,
@@ -503,26 +503,6 @@ widget_update_wm_size_hints (Widget widget)
   update_wm_hints (ew);
 }
 
-
-#if 0
-
-static void
-create_frame_gcs (EmacsFrame ew)
-{
-  struct frame *s = ew->emacs_frame.frame;
-
-  s->output_data.x->normal_gc
-    = XCreateGC (XtDisplay (ew), RootWindowOfScreen (XtScreen (ew)), 0, 0);
-  s->output_data.x->reverse_gc
-    = XCreateGC (XtDisplay (ew), RootWindowOfScreen (XtScreen (ew)), 0, 0);
-  s->output_data.x->cursor_gc
-    = XCreateGC (XtDisplay (ew), RootWindowOfScreen (XtScreen (ew)), 0, 0);
-  s->output_data.x->black_relief.gc = 0;
-  s->output_data.x->white_relief.gc = 0;
-}
-
-#endif /* 0 */
-
 static char setup_frame_cursor_bits[] =
 {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -545,7 +525,7 @@ setup_frame_gcs (EmacsFrame ew)
   font = Ffont_xlfd_name (font, Qnil);
   if (STRINGP (font))
     {
-      XFontStruct *xfont = XLoadQueryFont (FRAME_X_DISPLAY_INFO (s)->display,
+      XFontStruct *xfont = XLoadQueryFont (FRAME_DISPLAY_INFO (s)->display,
                                           SSDATA (font));
       if (xfont)
        {
@@ -650,6 +630,15 @@ EmacsFrameInitialize (Widget request, Widget new, ArgList dum1, Cardinal *dum2)
   set_frame_size (ew);
 }
 
+static void
+resize_cb (Widget widget,
+           XtPointer closure,
+           XEvent* event,
+           Boolean* continue_to_dispatch)
+{
+  EmacsFrameResize (widget);
+}
+
 
 static void
 EmacsFrameRealize (Widget widget, XtValueMask *mask, XSetWindowAttributes *attrs)
@@ -665,25 +654,16 @@ EmacsFrameRealize (Widget widget, XtValueMask *mask, XSetWindowAttributes *attrs
   *mask |= CWEventMask;
   XtCreateWindow (widget, InputOutput, (Visual *)CopyFromParent, *mask,
                  attrs);
+  /* Some ConfigureNotify events does not end up in EmacsFrameResize so
+     make sure we get them all.  Seen with xfcwm4 for example.  */
+  XtAddRawEventHandler (widget, StructureNotifyMask, False, resize_cb, NULL);
   update_wm_hints (ew);
 }
 
 static void
 EmacsFrameDestroy (Widget widget)
 {
-  EmacsFrame ew = (EmacsFrame) widget;
-  struct frame* s = ew->emacs_frame.frame;
-
-  if (! s) emacs_abort ();
-  if (! s->output_data.x) emacs_abort ();
-
-  block_input ();
-  x_free_gcs (s);
-  if (s->output_data.x->white_relief.gc)
-    XFreeGC (XtDisplay (widget), s->output_data.x->white_relief.gc);
-  if (s->output_data.x->black_relief.gc)
-    XFreeGC (XtDisplay (widget), s->output_data.x->black_relief.gc);
-  unblock_input ();
+  /* All GCs are now freed in x_free_frame_resources.  */
 }
 
 static void
@@ -691,15 +671,22 @@ EmacsFrameResize (Widget widget)
 {
   EmacsFrame ew = (EmacsFrame)widget;
   struct frame *f = ew->emacs_frame.frame;
+  struct x_output *x = f->output_data.x;
   int columns;
   int rows;
 
   pixel_to_char_size (ew, ew->core.width, ew->core.height, &columns, &rows);
-  change_frame_size (f, rows, columns, 0, 1, 0);
-  update_wm_hints (ew);
-  update_various_frame_slots (ew);
+  if (columns != FRAME_COLS (f)
+      || rows != FRAME_LINES (f)
+      || ew->core.width != FRAME_PIXEL_WIDTH (f)
+      || ew->core.height + x->menubar_height != FRAME_PIXEL_HEIGHT (f))
+    {
+      change_frame_size (f, columns, rows, 0, 1, 0, 0);
+      update_wm_hints (ew);
+      update_various_frame_slots (ew);
 
-  cancel_mouse_face (f);
+      cancel_mouse_face (f);
+    }
 }
 
 static Boolean
@@ -748,8 +735,8 @@ EmacsFrameSetValues (Widget cur_widget, Widget req_widget, Widget new_widget, Ar
       new->core.width = pixel_width;
       new->core.height = pixel_height;
 
-      change_frame_size (new->emacs_frame.frame, char_height, char_width,
-                         1, 0, 0);
+      change_frame_size (new->emacs_frame.frame, char_width, char_height,
+                        1, 0, 0, 0);
       needs_a_refresh = True;
     }
 
@@ -811,7 +798,7 @@ EmacsFrameSetCharSize (Widget widget, int columns, int rows)
   EmacsFrame ew = (EmacsFrame) widget;
   struct frame *f = ew->emacs_frame.frame;
 
-  x_set_window_size (f, 0, columns, rows);
+  x_set_window_size (f, 0, columns, rows, 0);
 }
 
 \f
@@ -819,7 +806,7 @@ void
 widget_store_internal_border (Widget widget)
 {
   EmacsFrame ew = (EmacsFrame) widget;
-  FRAME_PTR f = ew->emacs_frame.frame;
+  struct frame *f = ew->emacs_frame.frame;
 
   ew->emacs_frame.internal_border_width = f->internal_border_width;
 }