wm_event_system.h

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/*
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2007 Blender Foundation.
 * All rights reserved.
 */
 
#pragma once
 
/* return value of handler-operator call */
#define WM_HANDLER_CONTINUE 0
#define WM_HANDLER_BREAK 1
#define WM_HANDLER_HANDLED 2
#define WM_HANDLER_MODAL 4 /* MODAL|BREAK means unhandled */
 
struct ARegion;
struct GHOST_TabletData;
struct ScrArea;
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* wmKeyMap is in DNA_windowmanager.h, it's saveable */
 
enum eWM_EventHandlerType {
  WM_HANDLER_TYPE_GIZMO = 1,
  WM_HANDLER_TYPE_UI,
  WM_HANDLER_TYPE_OP,
  WM_HANDLER_TYPE_DROPBOX,
  WM_HANDLER_TYPE_KEYMAP,
};
 
typedef bool (*EventHandlerPoll)(const ARegion *region, const wmEvent *event);
 
typedef struct wmEventHandler {
  struct wmEventHandler *next, *prev;
 
  enum eWM_EventHandlerType type;
  char flag; /* WM_HANDLER_BLOCKING, ... */
 
  EventHandlerPoll poll;
} wmEventHandler;
 
struct wmEventHandler_KeymapPost {
  void (*post_fn)(wmKeyMap *keymap, wmKeyMapItem *kmi, void *user_data);
  void *user_data;
};
 
struct wmEventHandler_KeymapDynamic {
  wmEventHandler_KeymapDynamicFn *keymap_fn;
  void *user_data;
};
 
typedef struct wmEventHandler_Keymap {
  wmEventHandler head;
 
  wmKeyMap *keymap;
 
  struct wmEventHandler_KeymapPost post;
  struct wmEventHandler_KeymapDynamic dynamic;
 
  struct bToolRef *keymap_tool;
} wmEventHandler_Keymap;
 
typedef struct wmEventHandler_Gizmo {
  wmEventHandler head;
 
  struct wmGizmoMap *gizmo_map;
} wmEventHandler_Gizmo;
 
typedef struct wmEventHandler_UI {
  wmEventHandler head;
 
  wmUIHandlerFunc handle_fn;       /* callback receiving events */
  wmUIHandlerRemoveFunc remove_fn; /* callback when handler is removed */
  void *user_data;                 /* user data pointer */
 
  struct {
    struct ScrArea *area;
    struct ARegion *region;
    struct ARegion *menu;
  } context;
} wmEventHandler_UI;
 
typedef struct wmEventHandler_Op {
  wmEventHandler head;
 
  wmOperator *op;
 
  bool is_fileselect;
 
  struct {
    /* To override the window, and hence the screen. Set for few cases only, usually window/screen
     * can be taken from current context. */
    struct wmWindow *win;
 
    struct ScrArea *area;
    struct ARegion *region;
    short region_type;
  } context;
} wmEventHandler_Op;
 
typedef struct wmEventHandler_Dropbox {
  wmEventHandler head;
 
  ListBase *dropboxes;
} wmEventHandler_Dropbox;
 
/* wm_event_system.c */
void wm_event_free_all(wmWindow *win);
void wm_event_free(wmEvent *event);
void wm_event_free_handler(wmEventHandler *handler);
 
/* goes over entire hierarchy:  events -> window -> screen -> area -> region */
void wm_event_do_handlers(bContext *C);
 
void wm_event_add_ghostevent(wmWindowManager *wm, wmWindow *win, int type, void *customdata);
 
void wm_event_do_depsgraph(bContext *C, bool is_after_open_file);
void wm_event_do_refresh_wm_and_depsgraph(bContext *C);
void wm_event_do_notifiers(bContext *C);
 
void wm_event_handler_ui_cancel_ex(bContext *C,
                                   wmWindow *win,
                                   ARegion *region,
                                   bool reactivate_button);
 
/* wm_event_query.c */
float wm_pressure_curve(float raw_pressure);
void wm_tablet_data_from_ghost(const struct GHOST_TabletData *tablet_data, wmTabletData *wmtab);
 
/* wm_keymap.c */
 
/* wm_dropbox.c */
void wm_dropbox_free(void);
void wm_drags_check_ops(bContext *C, const wmEvent *event);
void wm_drags_draw(bContext *C, wmWindow *win, rcti *rect);
 
#ifdef __cplusplus
}
#endif