blender-archive/source/blender/windowmanager/intern/wm.c

/**
 * $Id:
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2007 Blender Foundation.
 * All rights reserved.
 *
 * 
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "DNA_windowmanager_types.h"

#include "MEM_guardedalloc.h"

#include "BLI_blenlib.h"

#include "BKE_blender.h"
#include "BKE_global.h"
#include "BKE_library.h"
#include "BKE_main.h"

#include "WM_api.h"
#include "WM_types.h"
#include "wm_window.h"
#include "wm_event_system.h"
#include "wm_event_types.h"

/* ****************************************************** */
#define MAX_OP_REGISTERED	32

/* all operations get registered in the windowmanager here */
/* called on event handling by event_system.c */
void WM_operator_register(wmWindowManager *wm, wmOperator *op)
{
	wmOperator *opc= MEM_mallocN(sizeof(wmOperator), "operator registry");
	int tot;
	
	*opc= *op;
	BLI_addtail(&wm->operators, opc);
	
	tot= BLI_countlist(&wm->operators);
	
	while(tot>MAX_OP_REGISTERED) {
		wmOperator *opt= wm->operators.first;
		BLI_remlink(&wm->operators, opt);
		MEM_freeN(opt);
		tot--;
	}
}

/* **************** standard keymap for WM ********************** */

/* default keymap for windows and screens, only call once per WM */
static void wm_window_keymap(wmWindowManager *wm)
{
	/* note, this doesn't replace existing keymap items */
	WM_keymap_verify_item(&wm->windowkeymap, "WM_OT_window_duplicate", AKEY, KM_PRESS, 0, 0);
	WM_keymap_verify_item(&wm->windowkeymap, "WM_OT_save_homefile", UKEY, KM_PRESS, KM_CTRL, 0);
}

/* ****************************************** */

void wm_check(bContext *C)
{
	
	/* wm context */
	if(C->wm==NULL) C->wm= G.main->wm.first;
	if(C->wm==NULL) return;
	if(C->wm->windows.first==NULL) return;
	
	/* case: no open windows at all, for old file reads */
	wm_window_add_ghostwindows(C->wm);
	
	if(C->window==NULL) C->window= C->wm->windrawable;
	
	if(C->wm->initialized==0) {
		wm_window_keymap(C->wm);
		C->wm->initialized= 1;
	}
}

/* on startup, it adds all data, for matching */
void wm_add_default(bContext *C)
{
	wmWindowManager *wm= alloc_libblock(&G.main->wm, ID_WM, "WinMan");
	wmWindow *win;
	
	C->wm= wm;
	
	win= wm_window_new(C, C->screen);
	wm->windrawable= win;
	C->window= win;
}


/* context is allowed to be NULL, do net free wm itself (library.c) */
void wm_close_and_free(bContext *C, wmWindowManager *wm)
{
	wmWindow *win;
	
	while((win= wm->windows.first)) {
		BLI_remlink(&wm->windows, win);
		wm_window_free(C, win);
	}
	
	BLI_freelistN(&wm->operators);
	BLI_freelistN(&wm->windowkeymap);
	BLI_freelistN(&wm->screenkeymap);
	
	if(C && C->wm==wm) C->wm= NULL;
}

void wm_close_and_free_all(bContext *C, ListBase *wmlist)
{
	wmWindowManager *wm;
	
	while((wm=wmlist->first)) {
		wm_close_and_free(C, wm);
		BLI_remlink(wmlist, wm);
		MEM_freeN(wm);
	}
}

void WM_main(bContext *C)
{
	while(1) {
		
		/* get events from ghost, handle window events, add to window queues */
		/* WM_init has assigned to ghost the bContext already */
		wm_window_process_events(1); 
		
		/* per window, all events to the window, screen, area and region handlers */
		wm_event_do_handlers(C);
		
	}
}

/*	While (local_event) {
Update controller stack if active changed ()
Match event to an action()
Process_event()
Do_notifications()
Do_draw_updates()
}
*/