1 /*
2  * This program is free software; you can redistribute it and/or
3  * modify it under the terms of the GNU General Public License
4  * as published by the Free Software Foundation; either version 2
5  * of the License, or (at your option) any later version.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10  * GNU General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * along with this program; if not, write to the Free Software Foundation,
14  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15  *
16  * The Original Code is Copyright (C) 2007 Blender Foundation.
17  * All rights reserved.
18  */
19 
20 /** \file
21  * \ingroup wm
22  *
23  *
24  * Overview of WM structs
25  * ======================
26  *
27  * - #wmWindowManager.windows -> #wmWindow <br>
28  *   Window manager stores a list of windows.
29  *
30  *   - #wmWindow.screen -> #bScreen <br>
31  *     Window has an active screen.
32  *
33  *     - #bScreen.areabase -> #ScrArea <br>
34  *       Link to #ScrArea.
35  *
36  *       - #ScrArea.spacedata <br>
37  *         Stores multiple spaces via space links.
38  *
39  *         - #SpaceLink <br>
40  *           Base struct for space data for all different space types.
41  *
42  *       - #ScrArea.regionbase -> #ARegion <br>
43  *         Stores multiple regions.
44  *
45  *     - #bScreen.regionbase -> #ARegion <br>
46  *       Global screen level regions, e.g. popups, popovers, menus.
47  *
48  *   - #wmWindow.global_areas -> #ScrAreaMap <br>
49  *     Global screen via 'areabase', e.g. top-bar & status-bar.
50  *
51  *
52  * Window Layout
53  * =============
54  *
55  * <pre>
56  * wmWindow -> bScreen
57  * +----------------------------------------------------------+
58  * |+-----------------------------------------+-------------+ |
59  * ||ScrArea (links to 3D view)               |ScrArea      | |
60  * ||+-------++----------+-------------------+|(links to    | |
61  * |||ARegion||          |ARegion (quad view)|| properties) | |
62  * |||(tools)||          |                   ||             | |
63  * |||       ||          |                   ||             | |
64  * |||       ||          |                   ||             | |
65  * |||       ||          |                   ||             | |
66  * |||       |+----------+-------------------+|             | |
67  * |||       ||          |                   ||             | |
68  * |||       ||          |                   ||             | |
69  * |||       ||          |                   ||             | |
70  * |||       ||          |                   ||             | |
71  * |||       ||          |                   ||             | |
72  * ||+-------++----------+-------------------+|             | |
73  * |+-----------------------------------------+-------------+ |
74  * +----------------------------------------------------------+
75  * </pre>
76  *
77  * Space Data
78  * ==========
79  *
80  * <pre>
81  * ScrArea's store a list of space data (SpaceLinks), each of unique type.
82  * The first one is the displayed in the UI, others are added as needed.
83  *
84  * +----------------------------+  <-- area->spacedata.first;
85  * |                            |
86  * |                            |---+  <-- other inactive SpaceLink's stored.
87  * |                            |   |
88  * |                            |   |---+
89  * |                            |   |   |
90  * |                            |   |   |
91  * |                            |   |   |
92  * |                            |   |   |
93  * +----------------------------+   |   |
94  *    |                             |   |
95  *    +-----------------------------+   |
96  *       |                              |
97  *       +------------------------------+
98  * </pre>
99  *
100  * A common way to get the space from the ScrArea:
101  * \code{.c}
102  * if (area->spacetype == SPACE_VIEW3D) {
103  *     View3D *v3d = area->spacedata.first;
104  *     ...
105  * }
106  * \endcode
107  */
108 
109 #pragma once
110 
111 struct ID;
112 struct ImBuf;
113 struct bContext;
114 struct wmEvent;
115 struct wmOperator;
116 struct wmWindowManager;
117 
118 #include "BLI_compiler_attrs.h"
119 #include "DNA_listBase.h"
120 #include "DNA_vec_types.h"
121 #include "RNA_types.h"
122 
123 /* exported types for WM */
124 #include "gizmo/WM_gizmo_types.h"
125 #include "wm_cursors.h"
126 #include "wm_event_types.h"
127 
128 /* Include external gizmo API's */
129 #include "gizmo/WM_gizmo_api.h"
130 
131 #ifdef __cplusplus
132 extern "C" {
133 #endif
134 
135 typedef struct wmGenericUserData {
136   void *data;
137   /** When NULL, use #MEM_freeN. */
138   void (*free_fn)(void *data);
139   bool use_free;
140 } wmGenericUserData;
141 
142 typedef struct wmGenericCallback {
143   void (*exec)(struct bContext *C, void *user_data);
144   void *user_data;
145   void (*free_user_data)(void *user_data);
146 } wmGenericCallback;
147 
148 /* ************** wmOperatorType ************************ */
149 
150 /** #wmOperatorType.flag */
151 enum {
152   /** Register operators in stack after finishing (needed for redo). */
153   OPTYPE_REGISTER = (1 << 0),
154   /** Do an undo push after the operator runs. */
155   OPTYPE_UNDO = (1 << 1),
156   /** Let Blender grab all input from the WM (X11). */
157   OPTYPE_BLOCKING = (1 << 2),
158   OPTYPE_MACRO = (1 << 3),
159 
160   /** Grabs the cursor and optionally enables continuous cursor wrapping. */
161   OPTYPE_GRAB_CURSOR_XY = (1 << 4),
162   /** Only warp on the X axis. */
163   OPTYPE_GRAB_CURSOR_X = (1 << 5),
164   /** Only warp on the Y axis. */
165   OPTYPE_GRAB_CURSOR_Y = (1 << 6),
166 
167   /** Show preset menu. */
168   OPTYPE_PRESET = (1 << 7),
169 
170   /**
171    * Some operators are mainly for internal use and don't make sense
172    * to be accessed from the search menu, even if poll() returns true.
173    * Currently only used for the search toolbox.
174    */
175   OPTYPE_INTERNAL = (1 << 8),
176 
177   /** Allow operator to run when interface is locked. */
178   OPTYPE_LOCK_BYPASS = (1 << 9),
179   /** Special type of undo which doesn't store itself multiple times. */
180   OPTYPE_UNDO_GROUPED = (1 << 10),
181 };
182 
183 /** For #WM_cursor_grab_enable wrap axis. */
184 enum {
185   WM_CURSOR_WRAP_NONE = 0,
186   WM_CURSOR_WRAP_X,
187   WM_CURSOR_WRAP_Y,
188   WM_CURSOR_WRAP_XY,
189 };
190 
191 /**
192  * Context to call operator in for #WM_operator_name_call.
193  * rna_ui.c contains EnumPropertyItem's of these, keep in sync.
194  */
195 enum {
196   /* if there's invoke, call it, otherwise exec */
197   WM_OP_INVOKE_DEFAULT,
198   WM_OP_INVOKE_REGION_WIN,
199   WM_OP_INVOKE_REGION_CHANNELS,
200   WM_OP_INVOKE_REGION_PREVIEW,
201   WM_OP_INVOKE_AREA,
202   WM_OP_INVOKE_SCREEN,
203   /* only call exec */
204   WM_OP_EXEC_DEFAULT,
205   WM_OP_EXEC_REGION_WIN,
206   WM_OP_EXEC_REGION_CHANNELS,
207   WM_OP_EXEC_REGION_PREVIEW,
208   WM_OP_EXEC_AREA,
209   WM_OP_EXEC_SCREEN,
210 };
211 
212 /* property tags for RNA_OperatorProperties */
213 typedef enum eOperatorPropTags {
214   OP_PROP_TAG_ADVANCED = (1 << 0),
215 } eOperatorPropTags;
216 #define OP_PROP_TAG_ADVANCED ((eOperatorPropTags)OP_PROP_TAG_ADVANCED)
217 
218 /* ************** wmKeyMap ************************ */
219 
220 /* modifier */
221 #define KM_SHIFT 1
222 #define KM_CTRL 2
223 #define KM_ALT 4
224 #define KM_OSKEY 8
225 /* means modifier should be pressed 2nd */
226 #define KM_SHIFT2 16
227 #define KM_CTRL2 32
228 #define KM_ALT2 64
229 #define KM_OSKEY2 128
230 
231 /* KM_MOD_ flags for wmKeyMapItem and wmEvent.alt/shift/oskey/ctrl  */
232 /* note that KM_ANY and KM_NOTHING are used with these defines too */
233 #define KM_MOD_FIRST 1
234 #define KM_MOD_SECOND 2
235 
236 /* type: defined in wm_event_types.c */
237 #define KM_TEXTINPUT -2
238 
239 /* val */
240 #define KM_ANY -1
241 #define KM_NOTHING 0
242 #define KM_PRESS 1
243 #define KM_RELEASE 2
244 #define KM_CLICK 3
245 #define KM_DBL_CLICK 4
246 #define KM_CLICK_DRAG 5
247 
248 /* ************** UI Handler ***************** */
249 
250 #define WM_UI_HANDLER_CONTINUE 0
251 #define WM_UI_HANDLER_BREAK 1
252 
253 /* ************** Notifiers ****************** */
254 
255 typedef struct wmNotifier {
256   struct wmNotifier *next, *prev;
257 
258   const struct wmWindow *window;
259 
260   unsigned int category, data, subtype, action;
261 
262   void *reference;
263 
264 } wmNotifier;
265 
266 /* 4 levels
267  *
268  * 0xFF000000; category
269  * 0x00FF0000; data
270  * 0x0000FF00; data subtype (unused?)
271  * 0x000000FF; action
272  */
273 
274 /* category */
275 #define NOTE_CATEGORY 0xFF000000
276 #define NC_WM (1 << 24)
277 #define NC_WINDOW (2 << 24)
278 #define NC_SCREEN (3 << 24)
279 #define NC_SCENE (4 << 24)
280 #define NC_OBJECT (5 << 24)
281 #define NC_MATERIAL (6 << 24)
282 #define NC_TEXTURE (7 << 24)
283 #define NC_LAMP (8 << 24)
284 #define NC_GROUP (9 << 24)
285 #define NC_IMAGE (10 << 24)
286 #define NC_BRUSH (11 << 24)
287 #define NC_TEXT (12 << 24)
288 #define NC_WORLD (13 << 24)
289 #define NC_ANIMATION (14 << 24)
290 #define NC_SPACE (15 << 24)
291 #define NC_GEOM (16 << 24)
292 #define NC_NODE (17 << 24)
293 #define NC_ID (18 << 24)
294 #define NC_PAINTCURVE (19 << 24)
295 #define NC_MOVIECLIP (20 << 24)
296 #define NC_MASK (21 << 24)
297 #define NC_GPENCIL (22 << 24)
298 #define NC_LINESTYLE (23 << 24)
299 #define NC_CAMERA (24 << 24)
300 #define NC_LIGHTPROBE (25 << 24)
301 
302 /* data type, 256 entries is enough, it can overlap */
303 #define NOTE_DATA 0x00FF0000
304 
305 /* NC_WM windowmanager */
306 #define ND_FILEREAD (1 << 16)
307 #define ND_FILESAVE (2 << 16)
308 #define ND_DATACHANGED (3 << 16)
309 #define ND_HISTORY (4 << 16)
310 #define ND_JOB (5 << 16)
311 #define ND_UNDO (6 << 16)
312 #define ND_XR_DATA_CHANGED (7 << 16)
313 
314 /* NC_SCREEN */
315 #define ND_LAYOUTBROWSE (1 << 16)
316 #define ND_LAYOUTDELETE (2 << 16)
317 #define ND_ANIMPLAY (4 << 16)
318 #define ND_GPENCIL (5 << 16)
319 #define ND_EDITOR_CHANGED (6 << 16) /*sent to new editors after switching to them*/
320 #define ND_LAYOUTSET (7 << 16)
321 #define ND_SKETCH (8 << 16)
322 #define ND_WORKSPACE_SET (9 << 16)
323 #define ND_WORKSPACE_DELETE (10 << 16)
324 
325 /* NC_SCENE Scene */
326 #define ND_SCENEBROWSE (1 << 16)
327 #define ND_MARKERS (2 << 16)
328 #define ND_FRAME (3 << 16)
329 #define ND_RENDER_OPTIONS (4 << 16)
330 #define ND_NODES (5 << 16)
331 #define ND_SEQUENCER (6 << 16)
332 /* Note: If an object was added, removed, merged/joined, ..., it is not enough to notify with
333  * this. This affects the layer so also send a layer change notifier (e.g. ND_LAYER_CONTENT)! */
334 #define ND_OB_ACTIVE (7 << 16)
335 /* See comment on ND_OB_ACTIVE. */
336 #define ND_OB_SELECT (8 << 16)
337 #define ND_OB_VISIBLE (9 << 16)
338 #define ND_OB_RENDER (10 << 16)
339 #define ND_MODE (11 << 16)
340 #define ND_RENDER_RESULT (12 << 16)
341 #define ND_COMPO_RESULT (13 << 16)
342 #define ND_KEYINGSET (14 << 16)
343 #define ND_TOOLSETTINGS (15 << 16)
344 #define ND_LAYER (16 << 16)
345 #define ND_FRAME_RANGE (17 << 16)
346 #define ND_TRANSFORM_DONE (18 << 16)
347 #define ND_WORLD (92 << 16)
348 #define ND_LAYER_CONTENT (101 << 16)
349 
350 /* NC_OBJECT Object */
351 #define ND_TRANSFORM (18 << 16)
352 #define ND_OB_SHADING (19 << 16)
353 #define ND_POSE (20 << 16)
354 #define ND_BONE_ACTIVE (21 << 16)
355 #define ND_BONE_SELECT (22 << 16)
356 #define ND_DRAW (23 << 16)
357 #define ND_MODIFIER (24 << 16)
358 #define ND_KEYS (25 << 16)
359 #define ND_CONSTRAINT (26 << 16)
360 #define ND_PARTICLE (27 << 16)
361 #define ND_POINTCACHE (28 << 16)
362 #define ND_PARENT (29 << 16)
363 #define ND_LOD (30 << 16)
364 #define ND_DRAW_RENDER_VIEWPORT \
365   (31 << 16) /* for camera & sequencer viewport update, also /w NC_SCENE */
366 #define ND_SHADERFX (32 << 16)
367 
368 /* NC_MATERIAL Material */
369 #define ND_SHADING (30 << 16)
370 #define ND_SHADING_DRAW (31 << 16)
371 #define ND_SHADING_LINKS (32 << 16)
372 #define ND_SHADING_PREVIEW (33 << 16)
373 
374 /* NC_LAMP Light */
375 #define ND_LIGHTING (40 << 16)
376 #define ND_LIGHTING_DRAW (41 << 16)
377 
378 /* NC_WORLD World */
379 #define ND_WORLD_DRAW (45 << 16)
380 
381 /* NC_TEXT Text */
382 #define ND_CURSOR (50 << 16)
383 #define ND_DISPLAY (51 << 16)
384 
385 /* NC_ANIMATION Animato */
386 #define ND_KEYFRAME (70 << 16)
387 #define ND_KEYFRAME_PROP (71 << 16)
388 #define ND_ANIMCHAN (72 << 16)
389 #define ND_NLA (73 << 16)
390 #define ND_NLA_ACTCHANGE (74 << 16)
391 #define ND_FCURVES_ORDER (75 << 16)
392 
393 /* NC_GPENCIL */
394 #define ND_GPENCIL_EDITMODE (85 << 16)
395 
396 /* NC_GEOM Geometry */
397 /* Mesh, Curve, MetaBall, Armature, .. */
398 #define ND_SELECT (90 << 16)
399 #define ND_DATA (91 << 16)
400 #define ND_VERTEX_GROUP (92 << 16)
401 
402 /* NC_NODE Nodes */
403 
404 /* NC_SPACE */
405 #define ND_SPACE_CONSOLE (1 << 16)     /* general redraw */
406 #define ND_SPACE_INFO_REPORT (2 << 16) /* update for reports, could specify type */
407 #define ND_SPACE_INFO (3 << 16)
408 #define ND_SPACE_IMAGE (4 << 16)
409 #define ND_SPACE_FILE_PARAMS (5 << 16)
410 #define ND_SPACE_FILE_LIST (6 << 16)
411 #define ND_SPACE_NODE (7 << 16)
412 #define ND_SPACE_OUTLINER (8 << 16)
413 #define ND_SPACE_VIEW3D (9 << 16)
414 #define ND_SPACE_PROPERTIES (10 << 16)
415 #define ND_SPACE_TEXT (11 << 16)
416 #define ND_SPACE_TIME (12 << 16)
417 #define ND_SPACE_GRAPH (13 << 16)
418 #define ND_SPACE_DOPESHEET (14 << 16)
419 #define ND_SPACE_NLA (15 << 16)
420 #define ND_SPACE_SEQUENCER (16 << 16)
421 #define ND_SPACE_NODE_VIEW (17 << 16)
422 #define ND_SPACE_CHANGED (18 << 16) /*sent to a new editor type after it's replaced an old one*/
423 #define ND_SPACE_CLIP (19 << 16)
424 #define ND_SPACE_FILE_PREVIEW (20 << 16)
425 
426 /* subtype, 256 entries too */
427 #define NOTE_SUBTYPE 0x0000FF00
428 
429 /* subtype scene mode */
430 #define NS_MODE_OBJECT (1 << 8)
431 
432 #define NS_EDITMODE_MESH (2 << 8)
433 #define NS_EDITMODE_CURVE (3 << 8)
434 #define NS_EDITMODE_SURFACE (4 << 8)
435 #define NS_EDITMODE_TEXT (5 << 8)
436 #define NS_EDITMODE_MBALL (6 << 8)
437 #define NS_EDITMODE_LATTICE (7 << 8)
438 #define NS_EDITMODE_ARMATURE (8 << 8)
439 #define NS_MODE_POSE (9 << 8)
440 #define NS_MODE_PARTICLE (10 << 8)
441 
442 /* subtype 3d view editing */
443 #define NS_VIEW3D_GPU (16 << 8)
444 #define NS_VIEW3D_SHADING (17 << 8)
445 
446 /* subtype layer editing */
447 #define NS_LAYER_COLLECTION (24 << 8)
448 
449 /* action classification */
450 #define NOTE_ACTION (0x000000FF)
451 #define NA_EDITED 1
452 #define NA_EVALUATED 2
453 #define NA_ADDED 3
454 #define NA_REMOVED 4
455 #define NA_RENAME 5
456 #define NA_SELECTED 6
457 #define NA_ACTIVATED 7
458 #define NA_PAINTING 8
459 
460 /* ************** Gesture Manager data ************** */
461 
462 /* wmGesture->type */
463 #define WM_GESTURE_TWEAK 0
464 #define WM_GESTURE_LINES 1
465 #define WM_GESTURE_RECT 2
466 #define WM_GESTURE_CROSS_RECT 3
467 #define WM_GESTURE_LASSO 4
468 #define WM_GESTURE_CIRCLE 5
469 #define WM_GESTURE_STRAIGHTLINE 6
470 
471 /**
472  * wmGesture is registered to #wmWindow.gesture, handled by operator callbacks.
473  * Tweak gesture is builtin feature.
474  */
475 typedef struct wmGesture {
476   struct wmGesture *next, *prev;
477   /** #wmEvent.type */
478   int event_type;
479   /** Gesture type define. */
480   int type;
481   /** bounds of region to draw gesture within. */
482   rcti winrct;
483   /** optional, amount of points stored. */
484   int points;
485   /** optional, maximum amount of points stored. */
486   int points_alloc;
487   int modal_state;
488   /** optional, draw the active side of the straightline gesture. */
489   bool draw_active_side;
490 
491   /**
492    * For modal operators which may be running idle, waiting for an event to activate the gesture.
493    * Typically this is set when the user is click-dragging the gesture
494    * (box and circle select for eg).
495    */
496   uint is_active : 1;
497   /** Previous value of is-active (use to detect first run & edge cases). */
498   uint is_active_prev : 1;
499   /** Use for gestures that support both immediate or delayed activation. */
500   uint wait_for_input : 1;
501   /** Use for gestures that can be moved, like box selection */
502   uint move : 1;
503   /** For gestures that support snapping, stores if snapping is enabled using the modal keymap
504    * toggle. */
505   uint use_snap : 1;
506   /** For gestures that support flip, stores if flip is enabled using the modal keymap
507    * toggle. */
508   uint use_flip : 1;
509 
510   /**
511    * customdata
512    * - for border is a #rcti.
513    * - for circle is recti, (xmin, ymin) is center, xmax radius.
514    * - for lasso is short array.
515    * - for straight line is a recti: (xmin,ymin) is start, (xmax, ymax) is end.
516    */
517   void *customdata;
518 
519   /** Free pointer to use for operator allocs (if set, its freed on exit). */
520   wmGenericUserData user_data;
521 } wmGesture;
522 
523 /* ************** wmEvent ************************ */
524 
525 typedef struct wmTabletData {
526   /** 0=EVT_TABLET_NONE, 1=EVT_TABLET_STYLUS, 2=EVT_TABLET_ERASER. */
527   int active;
528   /** range 0.0 (not touching) to 1.0 (full pressure). */
529   float pressure;
530   /** range 0.0 (upright) to 1.0 (tilted fully against the tablet surface). */
531   float x_tilt;
532   /** as above. */
533   float y_tilt;
534   /** Interpret mouse motion as absolute as typical for tablets. */
535   char is_motion_absolute;
536 } wmTabletData;
537 
538 /**
539  * Each event should have full modifier state.
540  * event comes from event manager and from keymap.
541  */
542 typedef struct wmEvent {
543   struct wmEvent *next, *prev;
544 
545   /** Event code itself (short, is also in keymap). */
546   short type;
547   /** Press, release, scrollvalue. */
548   short val;
549   /** Mouse pointer position, screen coord. */
550   int x, y;
551   /** Region mouse position, name convention pre 2.5 :). */
552   int mval[2];
553   /**
554    * From, ghost if utf8 is enabled for the platform,
555    * #BLI_str_utf8_size() must _always_ be valid, check
556    * when assigning s we don't need to check on every access after.
557    */
558   char utf8_buf[6];
559   /** From ghost, fallback if utf8 isn't set. */
560   char ascii;
561 
562   /**
563    * Generated by auto-repeat, note that this must only ever be set for keyboard events
564    * where `ISKEYBOARD(event->type) == true`.
565    *
566    * See #KMI_REPEAT_IGNORE for details on how key-map handling uses this.
567    */
568   char is_repeat;
569 
570   /** Previous state, used for double click and the 'click'. */
571   short prevtype;
572   short prevval;
573   int prevx, prevy;
574   double prevclicktime;
575   int prevclickx, prevclicky;
576 
577   /** Modifier states. */
578   /** 'oskey' is apple or windows-key, value denotes order of pressed. */
579   short shift, ctrl, alt, oskey;
580   /** rawkey modifier. */
581   short keymodifier;
582 
583   /** Set in case a #KM_PRESS went by unhandled. */
584   char check_click;
585   char check_drag;
586 
587   /** Tablet info, available for mouse move and button events. */
588   wmTabletData tablet;
589 
590   /* custom data */
591   /** Custom data type, stylus, 6dof, see wm_event_types.h */
592   short custom;
593   short customdatafree;
594   int pad2;
595   /** Ascii, unicode, mouse coords, angles, vectors, dragdrop info. */
596   void *customdata;
597 
598 } wmEvent;
599 
600 /**
601  * Values below are ignored when detecting if the user intentionally moved the cursor.
602  * Keep this very small since it's used for selection cycling for eg,
603  * where we want intended adjustments to pass this threshold and select new items.
604  *
605  * Always check for <= this value since it may be zero.
606  */
607 #define WM_EVENT_CURSOR_MOTION_THRESHOLD ((float)U.move_threshold * U.dpi_fac)
608 
609 /** Motion progress, for modal handlers. */
610 typedef enum {
611   P_NOT_STARTED,
612   P_STARTING,    /* <-- */
613   P_IN_PROGRESS, /* <-- only these are sent for NDOF motion. */
614   P_FINISHING,   /* <-- */
615   P_FINISHED,
616 } wmProgress;
617 
618 #ifdef WITH_INPUT_NDOF
619 typedef struct wmNDOFMotionData {
620   /* awfully similar to GHOST_TEventNDOFMotionData... */
621   /**
622    * Each component normally ranges from -1 to +1, but can exceed that.
623    * These use blender standard view coordinates,
624    * with positive rotations being CCW about the axis.
625    */
626   /** Translation. */
627   float tvec[3];
628   /** Rotation.
629    * <pre>
630    * axis = (rx,ry,rz).normalized.
631    * amount = (rx,ry,rz).magnitude [in revolutions, 1.0 = 360 deg]
632    * </pre>
633    */
634   float rvec[3];
635   /** Time since previous NDOF Motion event. */
636   float dt;
637   /** Is this the first event, the last, or one of many in between? */
638   wmProgress progress;
639 } wmNDOFMotionData;
640 #endif /* WITH_INPUT_NDOF */
641 
642 /** Timer flags. */
643 typedef enum {
644   /** Do not attempt to free customdata pointer even if non-NULL. */
645   WM_TIMER_NO_FREE_CUSTOM_DATA = 1 << 0,
646 } wmTimerFlags;
647 
648 typedef struct wmTimer {
649   struct wmTimer *next, *prev;
650 
651   /** Window this timer is attached to (optional). */
652   struct wmWindow *win;
653 
654   /** Set by timer user. */
655   double timestep;
656   /** Set by timer user, goes to event system. */
657   int event_type;
658   /** Various flags controlling timer options, see below. */
659   wmTimerFlags flags;
660   /** Set by timer user, to allow custom values. */
661   void *customdata;
662 
663   /** Total running time in seconds. */
664   double duration;
665   /** Time since previous step in seconds. */
666   double delta;
667 
668   /** Internal, last time timer was activated. */
669   double ltime;
670   /** Internal, next time we want to activate the timer. */
671   double ntime;
672   /** Internal, when the timer started. */
673   double stime;
674   /** Internal, put timers to sleep when needed. */
675   bool sleep;
676 } wmTimer;
677 
678 typedef struct wmOperatorType {
679   /** Text for UI, undo. */
680   const char *name;
681   /** Unique identifier. */
682   const char *idname;
683   const char *translation_context;
684   /** Use for tool-tips and Python docs. */
685   const char *description;
686   /** Identifier to group operators together. */
687   const char *undo_group;
688 
689   /**
690    * This callback executes the operator without any interactive input,
691    * parameters may be provided through operator properties. cannot use
692    * any interface code or input device state.
693    * See defines below for return values.
694    */
695   int (*exec)(struct bContext *, struct wmOperator *) ATTR_WARN_UNUSED_RESULT;
696 
697   /**
698    * This callback executes on a running operator whenever as property
699    * is changed. It can correct its own properties or report errors for
700    * invalid settings in exceptional cases.
701    * Boolean return value, True denotes a change has been made and to redraw.
702    */
703   bool (*check)(struct bContext *, struct wmOperator *);
704 
705   /**
706    * For modal temporary operators, initially invoke is called. then
707    * any further events are handled in modal. if the operation is
708    * canceled due to some external reason, cancel is called
709    * See defines below for return values.
710    */
711   int (*invoke)(struct bContext *,
712                 struct wmOperator *,
713                 const struct wmEvent *) ATTR_WARN_UNUSED_RESULT;
714 
715   /**
716    * Called when a modal operator is canceled (not used often).
717    * Internal cleanup can be done here if needed.
718    */
719   void (*cancel)(struct bContext *, struct wmOperator *);
720 
721   /**
722    * Modal is used for operators which continuously run, eg:
723    * fly mode, knife tool, circle select are all examples of modal operators.
724    * Modal operators can handle events which would normally access other operators,
725    * they keep running until they don't return `OPERATOR_RUNNING_MODAL`.
726    */
727   int (*modal)(struct bContext *,
728                struct wmOperator *,
729                const struct wmEvent *) ATTR_WARN_UNUSED_RESULT;
730 
731   /**
732    * Verify if the operator can be executed in the current context, note
733    * that the operator might still fail to execute even if this return true.
734    */
735   bool (*poll)(struct bContext *) ATTR_WARN_UNUSED_RESULT;
736 
737   /**
738    * Use to check if properties should be displayed in auto-generated UI.
739    * Use 'check' callback to enforce refreshing.
740    */
741   bool (*poll_property)(const struct bContext *C,
742                         struct wmOperator *op,
743                         const PropertyRNA *prop) ATTR_WARN_UNUSED_RESULT;
744 
745   /** Optional panel for redo and repeat, auto-generated if not set. */
746   void (*ui)(struct bContext *, struct wmOperator *);
747 
748   /**
749    * Return a different name to use in the user interface, based on property values.
750    * The returned string does not need to be freed.
751    */
752   const char *(*get_name)(struct wmOperatorType *, struct PointerRNA *);
753 
754   /**
755    * Return a different description to use in the user interface, based on property values.
756    * The returned string must be freed by the caller, unless NULL.
757    */
758   char *(*get_description)(struct bContext *C, struct wmOperatorType *, struct PointerRNA *);
759 
760   /** rna for properties */
761   struct StructRNA *srna;
762 
763   /** previous settings - for initializing on re-use */
764   struct IDProperty *last_properties;
765 
766   /**
767    * Default rna property to use for generic invoke functions.
768    * menus, enum search... etc. Example: Enum 'type' for a Delete menu.
769    *
770    * When assigned a string/number property,
771    * immediately edit the value when used in a popup. see: #UI_BUT_ACTIVATE_ON_INIT.
772    */
773   PropertyRNA *prop;
774 
775   /** struct wmOperatorTypeMacro */
776   ListBase macro;
777 
778   /** pointer to modal keymap, do not free! */
779   struct wmKeyMap *modalkeymap;
780 
781   /** python needs the operator type as well */
782   bool (*pyop_poll)(struct bContext *, struct wmOperatorType *ot) ATTR_WARN_UNUSED_RESULT;
783 
784   /** RNA integration */
785   ExtensionRNA rna_ext;
786 
787   /** Flag last for padding */
788   short flag;
789 
790 } wmOperatorType;
791 
792 /**
793  * Wrapper to reference a #wmOperatorType together with some set properties and other relevant
794  * information to invoke the operator in a customizable way.
795  */
796 typedef struct wmOperatorCallParams {
797   struct wmOperatorType *optype;
798   struct PointerRNA *opptr;
799   short opcontext;
800 } wmOperatorCallParams;
801 
802 #ifdef WITH_INPUT_IME
803 /* *********** Input Method Editor (IME) *********** */
804 /**
805  * \note similar to #GHOST_TEventImeData.
806  */
807 typedef struct wmIMEData {
808   size_t result_len, composite_len;
809 
810   /** utf8 encoding */
811   char *str_result;
812   /** utf8 encoding */
813   char *str_composite;
814 
815   /** Cursor position in the IME composition. */
816   int cursor_pos;
817   /** Beginning of the selection. */
818   int sel_start;
819   /** End of the selection. */
820   int sel_end;
821 
822   bool is_ime_composing;
823 } wmIMEData;
824 #endif
825 
826 /* **************** Paint Cursor ******************* */
827 
828 typedef void (*wmPaintCursorDraw)(struct bContext *C, int, int, void *customdata);
829 
830 /* *************** Drag and drop *************** */
831 
832 #define WM_DRAG_ID 0
833 #define WM_DRAG_RNA 1
834 #define WM_DRAG_PATH 2
835 #define WM_DRAG_NAME 3
836 #define WM_DRAG_VALUE 4
837 #define WM_DRAG_COLOR 5
838 #define WM_DRAG_DATASTACK 6
839 
840 typedef enum wmDragFlags {
841   WM_DRAG_NOP = 0,
842   WM_DRAG_FREE_DATA = 1,
843 } wmDragFlags;
844 
845 /* note: structs need not exported? */
846 
847 typedef struct wmDragID {
848   struct wmDragID *next, *prev;
849   struct ID *id;
850   struct ID *from_parent;
851 } wmDragID;
852 
853 typedef struct wmDrag {
854   struct wmDrag *next, *prev;
855 
856   int icon;
857   /** See 'WM_DRAG_' defines above. */
858   int type;
859   void *poin;
860   char path[1024]; /* FILE_MAX */
861   double value;
862 
863   /** If no icon but imbuf should be drawn around cursor. */
864   struct ImBuf *imb;
865   float scale;
866   int sx, sy;
867 
868   /** If set, draws operator name. */
869   char opname[200];
870   unsigned int flags;
871 
872   /** List of wmDragIDs, all are guaranteed to have the same ID type. */
873   ListBase ids;
874 } wmDrag;
875 
876 /**
877  * Dropboxes are like keymaps, part of the screen/area/region definition.
878  * Allocation and free is on startup and exit.
879  */
880 typedef struct wmDropBox {
881   struct wmDropBox *next, *prev;
882 
883   /** Test if the dropbox is active, then can print optype name. */
884   bool (*poll)(struct bContext *, struct wmDrag *, const wmEvent *, const char **);
885 
886   /** Before exec, this copies drag info to #wmDrop properties. */
887   void (*copy)(struct wmDrag *, struct wmDropBox *);
888 
889   /**
890    * If poll succeeds, operator is called.
891    * Not saved in file, so can be pointer.
892    */
893   wmOperatorType *ot;
894 
895   /** Operator properties, assigned to ptr->data and can be written to a file. */
896   struct IDProperty *properties;
897   /** RNA pointer to access properties. */
898   struct PointerRNA *ptr;
899 
900   /** Default invoke. */
901   short opcontext;
902 
903 } wmDropBox;
904 
905 /**
906  * Struct to store tool-tip timer and possible creation if the time is reached.
907  * Allows UI code to call #WM_tooltip_timer_init without each user having to handle the timer.
908  */
909 typedef struct wmTooltipState {
910   /** Create tooltip on this event. */
911   struct wmTimer *timer;
912   /** The area the tooltip is created in. */
913   struct ScrArea *area_from;
914   /** The region the tooltip is created in. */
915   struct ARegion *region_from;
916   /** The tooltip region. */
917   struct ARegion *region;
918   /** Create the tooltip region (assign to 'region'). */
919   struct ARegion *(*init)(struct bContext *C,
920                           struct ARegion *region,
921                           int *pass,
922                           double *pass_delay,
923                           bool *r_exit_on_event);
924   /** Exit on any event, not needed for buttons since their highlight state is used. */
925   bool exit_on_event;
926   /** Cursor location at the point of tooltip creation. */
927   int event_xy[2];
928   /** Pass, use when we want multiple tips, count down to zero. */
929   int pass;
930 } wmTooltipState;
931 
932 /* *************** migrated stuff, clean later? ************** */
933 
934 typedef struct RecentFile {
935   struct RecentFile *next, *prev;
936   char *filepath;
937 } RecentFile;
938 
939 /* Logging */
940 struct CLG_LogRef;
941 /* wm_init_exit.c */
942 extern struct CLG_LogRef *WM_LOG_OPERATORS;
943 extern struct CLG_LogRef *WM_LOG_HANDLERS;
944 extern struct CLG_LogRef *WM_LOG_EVENTS;
945 extern struct CLG_LogRef *WM_LOG_KEYMAPS;
946 extern struct CLG_LogRef *WM_LOG_TOOLS;
947 extern struct CLG_LogRef *WM_LOG_MSGBUS_PUB;
948 extern struct CLG_LogRef *WM_LOG_MSGBUS_SUB;
949 
950 #ifdef __cplusplus
951 }
952 #endif
953