[Bf-python] bpy.ops.wm.redraw() - an implementation of Blender 2.4*'s Redraw() function for Blender 2.5*...

[Dietrich Bollmann]

Hi,

Searching for an equivalent of Blender 2.4*'s Redraw() function I found
plenty of people missing it - but no response explaining how it can be
done in Blender 2.5*...

So finally I wrote my own redraw operator:  bpy.ops.wm.redraw()

I used 'wm_draw_update()' as model and it works.  But as I am not very
acquainted with the blender wm code, I am sure that there are better
ways to implement it...

For the case there is interest in this feature, I append the patch
implementing 'bpy.ops.wm.redraw()' to this email.  Please let me know if
you want me to submit it to the patch tracker as well.

Thanks, Dietrich


-------------- next part --------------
=== modified file 'source/blender/windowmanager/intern/wm_draw.c'
--- source/blender/windowmanager/intern/wm_draw.c	2010-07-22 10:02:02 +0000
+++ source/blender/windowmanager/intern/wm_draw.c	2010-07-24 02:08:30 +0000
@@ -768,6 +768,58 @@
 	}
 }
 
+/** Unconditionally redraw all windows. */   /* dietrich */
+void wm_redraw(bContext *C)
+{
+	/*
+	  NOTES:
+
+	  * This function is a copy of 'wm_draw_update()' stripped of all
+	  tests for draw requests so that all redraw functions are
+	  executed unconditionally...
+
+	  * 'wm_method_draw_full()' is used for redrawing windows.
+
+	  TODO:
+
+	  * Somebody who knows the window manager better should check if
+  	  the usage of the functions for an unconditional redraw of the
+  	  blender GUI is adequate...
+
+	  * Move the function to some more adequate place.  Currently it
+	  is positioned directly after its model: 'wm_draw_update()'...
+
+	  (dietrich)
+	*/
+
+	wmWindowManager *wm= CTX_wm_manager(C);
+	wmWindow *win;
+	int drawmethod;
+	
+	GPU_free_unused_buffers();
+	
+	/* draw all windows */
+	for(win= wm->windows.first; win; win= win->next) {
+
+		if(win->drawmethod != U.wmdrawmethod) {
+			wm_draw_window_clear(win);
+			win->drawmethod= U.wmdrawmethod;
+		}
+	
+		CTX_wm_window_set(C, win);
+			
+		/* sets context window+screen */
+		wm_window_make_drawable(C, win);
+	
+		/* draw window */
+		ED_screen_refresh(wm, win);
+		drawmethod= wm_automatic_draw_method(win);
+		wm_method_draw_full(C, win);
+		wm_window_swap_buffers(win);
+		CTX_wm_window_set(C, NULL);
+	}
+}
+
 void wm_draw_window_clear(wmWindow *win)
 {
 	bScreen *screen= win->screen;

=== modified file 'source/blender/windowmanager/intern/wm_operators.c'
--- source/blender/windowmanager/intern/wm_operators.c	2010-07-21 11:12:26 +0000
+++ source/blender/windowmanager/intern/wm_operators.c	2010-07-24 02:09:15 +0000
@@ -1969,6 +1969,16 @@
 	ot->poll= WM_operator_winactive;
 }
 
+/** Unconditionally redraw all windows. */   /* dietrich */
+static void WM_OT_redraw(wmOperatorType *ot)
+{
+	ot->name= "Redraw all windows";
+	ot->idname= "WM_OT_redraw";
+	ot->description="Redraw all windows";
+
+	ot->exec= wm_redraw_op;
+}
+
 static int wm_exit_blender_op(bContext *C, wmOperator *op)
 {
 	WM_operator_free(op);
@@ -3050,6 +3060,7 @@
 	WM_operatortype_append(WM_OT_read_homefile);
 	WM_operatortype_append(WM_OT_save_homefile);
 	WM_operatortype_append(WM_OT_window_fullscreen_toggle);
+	WM_operatortype_append(WM_OT_redraw);   /* dietrich */
 	WM_operatortype_append(WM_OT_exit_blender);
 	WM_operatortype_append(WM_OT_open_mainfile);
 	WM_operatortype_append(WM_OT_link_append);

=== modified file 'source/blender/windowmanager/intern/wm_window.c'
--- source/blender/windowmanager/intern/wm_window.c	2010-07-23 08:21:44 +0000
+++ source/blender/windowmanager/intern/wm_window.c	2010-07-24 02:09:34 +0000
@@ -509,6 +509,16 @@
 }
 
 
+/** Unconditionally redraw all windows. */   /* dietrich */
+int wm_redraw_op(bContext *C, wmOperator *op)
+{
+	/* unconditionally redraw all windows... */
+	wm_redraw(C);
+
+	return OPERATOR_FINISHED;
+}
+
+
 /* ************ events *************** */
 
 static int query_qual(char qual) 

=== modified file 'source/blender/windowmanager/wm_draw.h'
--- source/blender/windowmanager/wm_draw.h	2010-03-22 11:59:36 +0000
+++ source/blender/windowmanager/wm_draw.h	2010-07-24 02:09:52 +0000
@@ -35,6 +35,7 @@
 
 /* wm_draw.c */
 void		wm_draw_update			(struct bContext *C);
+void		wm_redraw				(struct bContext *C);   /* dietrich */
 void		wm_draw_window_clear	(struct wmWindow *win);
 void		wm_draw_region_clear	(struct wmWindow *win, struct ARegion *ar);
 

=== modified file 'source/blender/windowmanager/wm_window.h'
--- source/blender/windowmanager/wm_window.h	2010-03-26 06:26:02 +0000
+++ source/blender/windowmanager/wm_window.h	2010-07-24 02:10:13 +0000
@@ -65,6 +65,7 @@
 /* *************** window operators ************** */
 int			wm_window_duplicate_op	(bContext *C, struct wmOperator *op);
 int			wm_window_fullscreen_toggle_op(bContext *C, struct wmOperator *op);
+int			wm_redraw_op(bContext *C, struct wmOperator *op);   /* dietrich */
 
 #endif /* WM_WINDOW_H */