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) 2008 Blender Foundation.
17  * All rights reserved.
18  */
19 
20 /** \file
21  * \ingroup editors
22  */
23 
24 #pragma once
25 
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29 
30 struct AnimData;
31 struct Depsgraph;
32 struct ID;
33 struct ListBase;
34 
35 struct ARegion;
36 struct Main;
37 struct ReportList;
38 struct ScrArea;
39 struct SpaceLink;
40 struct View2D;
41 struct bContext;
42 struct wmKeyConfig;
43 
44 struct Object;
45 struct Scene;
46 
47 struct bDopeSheet;
48 
49 struct FCurve;
50 struct FModifier;
51 struct bAction;
52 
53 struct uiBlock;
54 struct uiLayout;
55 
56 struct PointerRNA;
57 struct PropertyRNA;
58 
59 /* ************************************************ */
60 /* ANIMATION CHANNEL FILTERING */
61 /* anim_filter.c */
62 
63 /* --------------- Context --------------------- */
64 
65 /* This struct defines a structure used for animation-specific
66  * 'context' information
67  */
68 typedef struct bAnimContext {
69   /** data to be filtered for use in animation editor */
70   void *data;
71   /** type of data eAnimCont_Types */
72   short datatype;
73 
74   /** editor->mode */
75   short mode;
76   /** area->spacetype */
77   short spacetype;
78   /** active region -> type (channels or main) */
79   short regiontype;
80 
81   /** editor host */
82   struct ScrArea *area;
83   /** editor data */
84   struct SpaceLink *sl;
85   /** region within editor */
86   struct ARegion *region;
87 
88   /** dopesheet data for editor (or which is being used) */
89   struct bDopeSheet *ads;
90 
91   /** Current Main */
92   struct Main *bmain;
93   /** active scene */
94   struct Scene *scene;
95   /** active scene layer */
96   struct ViewLayer *view_layer;
97   /** active dependency graph */
98   struct Depsgraph *depsgraph;
99   /** active object */
100   struct Object *obact;
101   /** active set of markers */
102   ListBase *markers;
103 
104   /** pointer to current reports list */
105   struct ReportList *reports;
106 
107   /** Scale factor for height of channels (i.e. based on the size of keyframes). */
108   float yscale_fac;
109 } bAnimContext;
110 
111 /* Main Data container types */
112 typedef enum eAnimCont_Types {
113   ANIMCONT_NONE = 0,      /* invalid or no data */
114   ANIMCONT_ACTION = 1,    /* action (bAction) */
115   ANIMCONT_SHAPEKEY = 2,  /* shapekey (Key) */
116   ANIMCONT_GPENCIL = 3,   /* grease pencil (screen) */
117   ANIMCONT_DOPESHEET = 4, /* dopesheet (bDopesheet) */
118   ANIMCONT_FCURVES = 5,   /* animation F-Curves (bDopesheet) */
119   ANIMCONT_DRIVERS = 6,   /* drivers (bDopesheet) */
120   ANIMCONT_NLA = 7,       /* nla (bDopesheet) */
121   ANIMCONT_CHANNEL = 8,   /* animation channel (bAnimListElem) */
122   ANIMCONT_MASK = 9,      /* mask dopesheet */
123   ANIMCONT_TIMELINE = 10, /* "timeline" editor (bDopeSheet) */
124 } eAnimCont_Types;
125 
126 /* --------------- Channels -------------------- */
127 
128 /* This struct defines a structure used for quick and uniform access for
129  * channels of animation data
130  */
131 typedef struct bAnimListElem {
132   struct bAnimListElem *next, *prev;
133 
134   /** source data this elem represents */
135   void *data;
136   /** (eAnim_ChannelType) one of the ANIMTYPE_* values */
137   int type;
138   /** copy of elem's flags for quick access */
139   int flag;
140   /** for un-named data, the index of the data in its collection */
141   int index;
142 
143   /** (eAnim_Update_Flags)  tag the element for updating */
144   char update;
145   /** tag the included data. Temporary always */
146   char tag;
147 
148   /** (eAnim_KeyType) type of motion data to expect */
149   short datatype;
150   /** motion data - mostly F-Curves, but can be other types too */
151   void *key_data;
152 
153   /**
154    * \note
155    * id here is the "IdAdtTemplate"-style datablock (e.g. Object, Material, Texture, NodeTree)
156    * from which evaluation of the RNA-paths takes place. It's used to figure out how deep
157    * channels should be nested (e.g. for Textures/NodeTrees) in the tree, and allows property
158    * lookups (e.g. for sliders and for inserting keyframes) to work. If we had instead used
159    * bAction or something similar, none of this would be possible: although it's trivial
160    * to use an IdAdtTemplate type to find the source action a channel (e.g. F-Curve) comes from
161    * (i.e. in the AnimEditors, it *must* be the active action, as only that can be edited),
162    * it's impossible to go the other way (i.e. one action may be used in multiple places).
163    */
164   /** ID block that channel is attached to */
165   struct ID *id;
166   /** source of the animation data attached to ID block (for convenience) */
167   struct AnimData *adt;
168 
169   /**
170    * For list element which corresponds to a f-curve, this is an ID which
171    * owns the f-curve.
172    *
173    * For example, if the f-curve is coming from Action, this id will be set to
174    * action's ID. But if this is a f-curve which is a driver, then the owner
175    * is set to, for example, object.
176    *
177    * Note, that this is different from id above. The id above will be set to
178    * an object if the f-curve is coming from action associated with that
179    * object. */
180   struct ID *fcurve_owner_id;
181 
182   /**
183    * for per-element F-Curves
184    * (e.g. NLA Control Curves), the element that this represents (e.g. NlaStrip) */
185   void *owner;
186 } bAnimListElem;
187 
188 /**
189  * Some types for easier type-testing
190  *
191  * \note need to keep the order of these synchronized with the channels define code
192  * which is used for drawing and handling channel lists for.
193  */
194 typedef enum eAnim_ChannelType {
195   ANIMTYPE_NONE = 0,
196   ANIMTYPE_ANIMDATA,
197   ANIMTYPE_SPECIALDATA__UNUSED,
198 
199   ANIMTYPE_SUMMARY,
200 
201   ANIMTYPE_SCENE,
202   ANIMTYPE_OBJECT,
203   ANIMTYPE_GROUP,
204   ANIMTYPE_FCURVE,
205 
206   ANIMTYPE_NLACONTROLS,
207   ANIMTYPE_NLACURVE,
208 
209   ANIMTYPE_FILLACTD,
210   ANIMTYPE_FILLDRIVERS,
211 
212   ANIMTYPE_DSMAT,
213   ANIMTYPE_DSLAM,
214   ANIMTYPE_DSCAM,
215   ANIMTYPE_DSCACHEFILE,
216   ANIMTYPE_DSCUR,
217   ANIMTYPE_DSSKEY,
218   ANIMTYPE_DSWOR,
219   ANIMTYPE_DSNTREE,
220   ANIMTYPE_DSPART,
221   ANIMTYPE_DSMBALL,
222   ANIMTYPE_DSARM,
223   ANIMTYPE_DSMESH,
224   ANIMTYPE_DSTEX,
225   ANIMTYPE_DSLAT,
226   ANIMTYPE_DSLINESTYLE,
227   ANIMTYPE_DSSPK,
228   ANIMTYPE_DSGPENCIL,
229   ANIMTYPE_DSMCLIP,
230   ANIMTYPE_DSHAIR,
231   ANIMTYPE_DSPOINTCLOUD,
232   ANIMTYPE_DSVOLUME,
233   ANIMTYPE_DSSIMULATION,
234 
235   ANIMTYPE_SHAPEKEY,
236 
237   ANIMTYPE_GPDATABLOCK,
238   ANIMTYPE_GPLAYER,
239 
240   ANIMTYPE_MASKDATABLOCK,
241   ANIMTYPE_MASKLAYER,
242 
243   ANIMTYPE_NLATRACK,
244   ANIMTYPE_NLAACTION,
245 
246   ANIMTYPE_PALETTE,
247 
248   /* always as last item, the total number of channel types... */
249   ANIMTYPE_NUM_TYPES,
250 } eAnim_ChannelType;
251 
252 /* types of keyframe data in bAnimListElem */
253 typedef enum eAnim_KeyType {
254   ALE_NONE = 0, /* no keyframe data */
255   ALE_FCURVE,   /* F-Curve */
256   ALE_GPFRAME,  /* Grease Pencil Frames */
257   ALE_MASKLAY,  /* Mask */
258   ALE_NLASTRIP, /* NLA Strips */
259 
260   ALE_ALL,   /* All channels summary */
261   ALE_SCE,   /* Scene summary */
262   ALE_OB,    /* Object summary */
263   ALE_ACT,   /* Action summary */
264   ALE_GROUP, /* Action Group summary */
265 } eAnim_KeyType;
266 
267 /* Flags for specifying the types of updates (i.e. recalculation/refreshing) that
268  * needs to be performed to the data contained in a channel following editing.
269  * For use with ANIM_animdata_update()
270  */
271 typedef enum eAnim_Update_Flags {
272   ANIM_UPDATE_DEPS = (1 << 0),    /* referenced data and dependencies get refreshed */
273   ANIM_UPDATE_ORDER = (1 << 1),   /* keyframes need to be sorted */
274   ANIM_UPDATE_HANDLES = (1 << 2), /* recalculate handles */
275 } eAnim_Update_Flags;
276 
277 /* used for most tools which change keyframes (flushed by ANIM_animdata_update) */
278 #define ANIM_UPDATE_DEFAULT (ANIM_UPDATE_DEPS | ANIM_UPDATE_ORDER | ANIM_UPDATE_HANDLES)
279 #define ANIM_UPDATE_DEFAULT_NOHANDLES (ANIM_UPDATE_DEFAULT & ~ANIM_UPDATE_HANDLES)
280 
281 /* ----------------- Filtering -------------------- */
282 
283 /* filtering flags  - under what circumstances should a channel be returned */
284 typedef enum eAnimFilter_Flags {
285   /**
286    * Data which channel represents is fits the dope-sheet filters
287    * (i.e. scene visibility criteria).
288    *
289    * XXX: it's hard to think of any examples where this *ISN'T* the case...
290    * perhaps becomes implicit?.
291    */
292   ANIMFILTER_DATA_VISIBLE = (1 << 0),
293   /** channel is visible within the channel-list hierarchy
294    * (i.e. F-Curves within Groups in ActEdit) */
295   ANIMFILTER_LIST_VISIBLE = (1 << 1),
296   /** channel has specifically been tagged as visible in Graph Editor (* Graph Editor Only) */
297   ANIMFILTER_CURVE_VISIBLE = (1 << 2),
298 
299   /** include summary channels and "expanders" (for drawing/mouse-selection in channel list) */
300   ANIMFILTER_LIST_CHANNELS = (1 << 3),
301 
302   /** for its type, channel should be "active" one */
303   ANIMFILTER_ACTIVE = (1 << 4),
304   /** channel is a child of the active group (* Actions specialty) */
305   ANIMFILTER_ACTGROUPED = (1 << 5),
306 
307   /** channel must be selected/not-selected, but both must not be set together */
308   ANIMFILTER_SEL = (1 << 6),
309   ANIMFILTER_UNSEL = (1 << 7),
310 
311   /** editability status - must be editable to be included */
312   ANIMFILTER_FOREDIT = (1 << 8),
313   /** only selected animchannels should be considerable as editable - mainly
314    * for Graph Editor's option for keys on select curves only */
315   ANIMFILTER_SELEDIT = (1 << 9),
316 
317   /**
318    * Flags used to enforce certain data types.
319    *
320    * \note The ones for curves and NLA tracks were redundant and have been removed for now.
321    */
322   ANIMFILTER_ANIMDATA = (1 << 10),
323 
324   /** duplicate entries for animation data attached to multi-user blocks must not occur */
325   ANIMFILTER_NODUPLIS = (1 << 11),
326 
327   /** for checking if we should keep some collapsed channel around (internal use only!) */
328   ANIMFILTER_TMP_PEEK = (1 << 30),
329 
330   /** Ignore ONLYSEL flag from #bDopeSheet.filterflag (internal use only!) */
331   ANIMFILTER_TMP_IGNORE_ONLYSEL = (1u << 31),
332 } eAnimFilter_Flags;
333 
334 /* ---------- Flag Checking Macros ------------ */
335 /* XXX check on all of these flags again. */
336 
337 /* Dopesheet only */
338 /* 'Scene' channels */
339 #define SEL_SCEC(sce) (CHECK_TYPE_INLINE(sce, Scene *), ((sce->flag & SCE_DS_SELECTED)))
340 #define EXPANDED_SCEC(sce) (CHECK_TYPE_INLINE(sce, Scene *), ((sce->flag & SCE_DS_COLLAPSED) == 0))
341 /* 'Sub-Scene' channels (flags stored in Data block) */
342 #define FILTER_WOR_SCED(wo) (CHECK_TYPE_INLINE(wo, World *), (wo->flag & WO_DS_EXPAND))
343 #define FILTER_LS_SCED(linestyle) ((linestyle->flag & LS_DS_EXPAND))
344 /* 'Object' channels */
345 #define SEL_OBJC(base) (CHECK_TYPE_INLINE(base, Base *), ((base->flag & SELECT)))
346 #define EXPANDED_OBJC(ob) \
347   (CHECK_TYPE_INLINE(ob, Object *), (((ob)->nlaflag & OB_ADS_COLLAPSED) == 0))
348 /* 'Sub-object' channels (flags stored in Data block) */
349 #define FILTER_SKE_OBJD(key) (CHECK_TYPE_INLINE(key, Key *), ((key->flag & KEY_DS_EXPAND)))
350 #define FILTER_MAT_OBJD(ma) (CHECK_TYPE_INLINE(ma, Material *), ((ma->flag & MA_DS_EXPAND)))
351 #define FILTER_LAM_OBJD(la) (CHECK_TYPE_INLINE(la, Light *), ((la->flag & LA_DS_EXPAND)))
352 #define FILTER_CAM_OBJD(ca) (CHECK_TYPE_INLINE(ca, Camera *), ((ca->flag & CAM_DS_EXPAND)))
353 #define FILTER_CACHEFILE_OBJD(cf) \
354   (CHECK_TYPE_INLINE(cf, CacheFile *), (((cf)->flag & CACHEFILE_DS_EXPAND)))
355 #define FILTER_CUR_OBJD(cu) (CHECK_TYPE_INLINE(cu, Curve *), ((cu->flag & CU_DS_EXPAND)))
356 #define FILTER_PART_OBJD(part) \
357   (CHECK_TYPE_INLINE(part, ParticleSettings *), (((part)->flag & PART_DS_EXPAND)))
358 #define FILTER_MBALL_OBJD(mb) (CHECK_TYPE_INLINE(mb, MetaBall *), ((mb->flag2 & MB_DS_EXPAND)))
359 #define FILTER_ARM_OBJD(arm) (CHECK_TYPE_INLINE(arm, bArmature *), ((arm->flag & ARM_DS_EXPAND)))
360 #define FILTER_MESH_OBJD(me) (CHECK_TYPE_INLINE(me, Mesh *), ((me->flag & ME_DS_EXPAND)))
361 #define FILTER_LATTICE_OBJD(lt) (CHECK_TYPE_INLINE(lt, Lattice *), ((lt->flag & LT_DS_EXPAND)))
362 #define FILTER_SPK_OBJD(spk) (CHECK_TYPE_INLINE(spk, Speaker *), ((spk->flag & SPK_DS_EXPAND)))
363 #define FILTER_HAIR_OBJD(ha) (CHECK_TYPE_INLINE(ha, Hair *), ((ha->flag & HA_DS_EXPAND)))
364 #define FILTER_POINTS_OBJD(pt) (CHECK_TYPE_INLINE(pt, PointCloud *), ((pt->flag & PT_DS_EXPAND)))
365 #define FILTER_VOLUME_OBJD(vo) (CHECK_TYPE_INLINE(vo, Volume *), ((vo->flag & VO_DS_EXPAND)))
366 #define FILTER_SIMULATION_OBJD(sim) \
367   (CHECK_TYPE_INLINE(sim, Simulation *), ((sim->flag & SIM_DS_EXPAND)))
368 /* Variable use expanders */
369 #define FILTER_NTREE_DATA(ntree) \
370   (CHECK_TYPE_INLINE(ntree, bNodeTree *), (((ntree)->flag & NTREE_DS_EXPAND)))
371 #define FILTER_TEX_DATA(tex) (CHECK_TYPE_INLINE(tex, Tex *), ((tex->flag & TEX_DS_EXPAND)))
372 
373 /* 'Sub-object/Action' channels (flags stored in Action) */
374 #define SEL_ACTC(actc) ((actc->flag & ACT_SELECTED))
375 #define EXPANDED_ACTC(actc) ((actc->flag & ACT_COLLAPSED) == 0)
376 /* 'Sub-AnimData' channels */
377 #define EXPANDED_DRVD(adt) ((adt->flag & ADT_DRIVERS_COLLAPSED) == 0)
378 
379 /* Actions (also used for Dopesheet) */
380 /* Action Channel Group */
381 #define EDITABLE_AGRP(agrp) (((agrp)->flag & AGRP_PROTECTED) == 0)
382 #define EXPANDED_AGRP(ac, agrp) \
383   (((!(ac) || ((ac)->spacetype != SPACE_GRAPH)) && ((agrp)->flag & AGRP_EXPANDED)) || \
384    (((ac) && ((ac)->spacetype == SPACE_GRAPH)) && ((agrp)->flag & AGRP_EXPANDED_G)))
385 #define SEL_AGRP(agrp) (((agrp)->flag & AGRP_SELECTED) || ((agrp)->flag & AGRP_ACTIVE))
386 /* F-Curve Channels */
387 #define EDITABLE_FCU(fcu) ((fcu->flag & FCURVE_PROTECTED) == 0)
388 #define SEL_FCU(fcu) (fcu->flag & FCURVE_SELECTED)
389 
390 /* ShapeKey mode only */
391 #define EDITABLE_SHAPEKEY(kb) ((kb->flag & KEYBLOCK_LOCKED) == 0)
392 #define SEL_SHAPEKEY(kb) (kb->flag & KEYBLOCK_SEL)
393 
394 /* Grease Pencil only */
395 /* Grease Pencil datablock settings */
396 #define EXPANDED_GPD(gpd) (gpd->flag & GP_DATA_EXPAND)
397 /* Grease Pencil Layer settings */
398 #define EDITABLE_GPL(gpl) ((gpl->flag & GP_LAYER_LOCKED) == 0)
399 #define SEL_GPL(gpl) (gpl->flag & GP_LAYER_SELECT)
400 
401 /* Mask Only */
402 /* Grease Pencil datablock settings */
403 #define EXPANDED_MASK(mask) (mask->flag & MASK_ANIMF_EXPAND)
404 /* Grease Pencil Layer settings */
405 #define EDITABLE_MASK(masklay) ((masklay->flag & MASK_LAYERFLAG_LOCKED) == 0)
406 #define SEL_MASKLAY(masklay) (masklay->flag & SELECT)
407 
408 /* NLA only */
409 #define SEL_NLT(nlt) (nlt->flag & NLATRACK_SELECTED)
410 #define EDITABLE_NLT(nlt) ((nlt->flag & NLATRACK_PROTECTED) == 0)
411 
412 /* Movie clip only */
413 #define EXPANDED_MCLIP(clip) (clip->flag & MCLIP_DATA_EXPAND)
414 
415 /* Palette only */
416 #define EXPANDED_PALETTE(palette) (palette->flag & PALETTE_DATA_EXPAND)
417 
418 /* AnimData - NLA mostly... */
419 #define SEL_ANIMDATA(adt) (adt->flag & ADT_UI_SELECTED)
420 
421 /* -------------- Channel Defines -------------- */
422 
423 /* channel heights */
424 #define ACHANNEL_FIRST_TOP(ac) \
425   (UI_view2d_scale_get_y(&(ac)->region->v2d) * -UI_TIME_SCRUB_MARGIN_Y - ACHANNEL_SKIP)
426 #define ACHANNEL_HEIGHT(ac) (0.8f * (ac)->yscale_fac * U.widget_unit)
427 #define ACHANNEL_SKIP (0.1f * U.widget_unit)
428 #define ACHANNEL_STEP(ac) (ACHANNEL_HEIGHT(ac) + ACHANNEL_SKIP)
429 /* Additional offset to give some room at the end. */
430 #define ACHANNEL_TOT_HEIGHT(ac, item_amount) \
431   (-ACHANNEL_FIRST_TOP(ac) + ACHANNEL_STEP(ac) * (item_amount + 1))
432 
433 /* channel widths */
434 #define ACHANNEL_NAMEWIDTH (10 * U.widget_unit)
435 
436 /* channel toggle-buttons */
437 #define ACHANNEL_BUTTON_WIDTH (0.8f * U.widget_unit)
438 
439 /* -------------- NLA Channel Defines -------------- */
440 
441 /* NLA channel heights */
442 #define NLACHANNEL_FIRST_TOP(ac) \
443   (UI_view2d_scale_get_y(&(ac)->region->v2d) * -UI_TIME_SCRUB_MARGIN_Y - NLACHANNEL_SKIP)
444 #define NLACHANNEL_HEIGHT(snla) \
445   (((snla) && ((snla)->flag & SNLA_NOSTRIPCURVES)) ? (0.8f * U.widget_unit) : \
446                                                      (1.2f * U.widget_unit))
447 #define NLACHANNEL_SKIP (0.1f * U.widget_unit)
448 #define NLACHANNEL_STEP(snla) (NLACHANNEL_HEIGHT(snla) + NLACHANNEL_SKIP)
449 /* Additional offset to give some room at the end. */
450 #define NLACHANNEL_TOT_HEIGHT(ac, item_amount) \
451   (-NLACHANNEL_FIRST_TOP(ac) + NLACHANNEL_STEP(((SpaceNla *)(ac)->sl)) * (item_amount + 1))
452 
453 /* channel widths */
454 #define NLACHANNEL_NAMEWIDTH (10 * U.widget_unit)
455 
456 /* channel toggle-buttons */
457 #define NLACHANNEL_BUTTON_WIDTH (0.8f * U.widget_unit)
458 
459 /* ---------------- API  -------------------- */
460 
461 /* Obtain list of filtered Animation channels to operate on.
462  * Returns the number of channels in the list
463  */
464 size_t ANIM_animdata_filter(bAnimContext *ac,
465                             ListBase *anim_data,
466                             eAnimFilter_Flags filter_mode,
467                             void *data,
468                             eAnimCont_Types datatype);
469 
470 /* Obtain current anim-data context from Blender Context info.
471  * Returns whether the operation was successful.
472  */
473 bool ANIM_animdata_get_context(const struct bContext *C, bAnimContext *ac);
474 
475 /* Obtain current anim-data context (from Animation Editor) given
476  * that Blender Context info has already been set.
477  * Returns whether the operation was successful.
478  */
479 bool ANIM_animdata_context_getdata(bAnimContext *ac);
480 
481 /* Acts on bAnimListElem eAnim_Update_Flags */
482 void ANIM_animdata_update(bAnimContext *ac, ListBase *anim_data);
483 
484 void ANIM_animdata_freelist(ListBase *anim_data);
485 
486 /* ************************************************ */
487 /* ANIMATION CHANNELS LIST */
488 /* anim_channels_*.c */
489 
490 /* ------------------------ Drawing TypeInfo -------------------------- */
491 
492 /* role or level of animchannel in the hierarchy */
493 typedef enum eAnimChannel_Role {
494   /** datablock expander - a "composite" channel type */
495   ACHANNEL_ROLE_EXPANDER = -1,
496   /** special purposes - not generally for hierarchy processing */
497   /* ACHANNEL_ROLE_SPECIAL = 0, */ /* UNUSED */
498   /** data channel - a channel representing one of the actual building blocks of channels */
499   ACHANNEL_ROLE_CHANNEL = 1,
500 } eAnimChannel_Role;
501 
502 /* flag-setting behavior */
503 typedef enum eAnimChannels_SetFlag {
504   /** turn off */
505   ACHANNEL_SETFLAG_CLEAR = 0,
506   /** turn on */
507   ACHANNEL_SETFLAG_ADD = 1,
508   /** on->off, off->on */
509   ACHANNEL_SETFLAG_INVERT = 2,
510   /** some on -> all off / all on */
511   ACHANNEL_SETFLAG_TOGGLE = 3,
512 } eAnimChannels_SetFlag;
513 
514 /* types of settings for AnimChannels */
515 typedef enum eAnimChannel_Settings {
516   ACHANNEL_SETTING_SELECT = 0,
517   /** warning: for drawing UI's, need to check if this is off (maybe inverse this later) */
518   ACHANNEL_SETTING_PROTECT = 1,
519   ACHANNEL_SETTING_MUTE = 2,
520   ACHANNEL_SETTING_EXPAND = 3,
521   /** only for Graph Editor */
522   ACHANNEL_SETTING_VISIBLE = 4,
523   /** only for NLA Tracks */
524   ACHANNEL_SETTING_SOLO = 5,
525   /** only for NLA Actions */
526   ACHANNEL_SETTING_PINNED = 6,
527   ACHANNEL_SETTING_MOD_OFF = 7,
528   /** channel is pinned and always visible */
529   ACHANNEL_SETTING_ALWAYS_VISIBLE = 8,
530 } eAnimChannel_Settings;
531 
532 /* Drawing, mouse handling, and flag setting behavior... */
533 typedef struct bAnimChannelType {
534   /* -- Type data -- */
535   /* name of the channel type, for debugging */
536   const char *channel_type_name;
537   /* "level" or role in hierarchy - for finding the active channel */
538   eAnimChannel_Role channel_role;
539 
540   /* -- Drawing -- */
541   /* get RGB color that is used to draw the majority of the backdrop */
542   void (*get_backdrop_color)(bAnimContext *ac, bAnimListElem *ale, float r_color[3]);
543   /* draw backdrop strip for channel */
544   void (*draw_backdrop)(bAnimContext *ac, bAnimListElem *ale, float yminc, float ymaxc);
545   /* get depth of indention (relative to the depth channel is nested at) */
546   short (*get_indent_level)(bAnimContext *ac, bAnimListElem *ale);
547   /* get offset in pixels for the start of the channel (in addition to the indent depth) */
548   short (*get_offset)(bAnimContext *ac, bAnimListElem *ale);
549 
550   /* get name (for channel lists) */
551   void (*name)(bAnimListElem *ale, char *name);
552   /* get RNA property+pointer for editing the name */
553   bool (*name_prop)(bAnimListElem *ale, struct PointerRNA *ptr, struct PropertyRNA **prop);
554   /* get icon (for channel lists) */
555   int (*icon)(bAnimListElem *ale);
556 
557   /* -- Settings -- */
558   /* check if the given setting is valid in the current context */
559   bool (*has_setting)(bAnimContext *ac, bAnimListElem *ale, eAnimChannel_Settings setting);
560   /* get the flag used for this setting */
561   int (*setting_flag)(bAnimContext *ac, eAnimChannel_Settings setting, bool *neg);
562   /* get the pointer to int/short where data is stored,
563    * with type being  sizeof(ptr_data) which should be fine for runtime use...
564    * - assume that setting has been checked to be valid for current context
565    */
566   void *(*setting_ptr)(bAnimListElem *ale, eAnimChannel_Settings setting, short *type);
567 } bAnimChannelType;
568 
569 /* ------------------------ Drawing API -------------------------- */
570 
571 /* Get typeinfo for the given channel */
572 const bAnimChannelType *ANIM_channel_get_typeinfo(bAnimListElem *ale);
573 
574 /* Print debugging info about a given channel */
575 void ANIM_channel_debug_print_info(bAnimListElem *ale, short indent_level);
576 
577 /* Draw the given channel */
578 void ANIM_channel_draw(
579     bAnimContext *ac, bAnimListElem *ale, float yminc, float ymaxc, size_t channel_index);
580 /* Draw the widgets for the given channel */
581 void ANIM_channel_draw_widgets(const struct bContext *C,
582                                bAnimContext *ac,
583                                bAnimListElem *ale,
584                                struct uiBlock *block,
585                                rctf *rect,
586                                size_t channel_index);
587 
588 /* ------------------------ Editing API -------------------------- */
589 
590 /* Check if some setting for a channel is enabled
591  * Returns: 1 = On, 0 = Off, -1 = Invalid
592  *
593  * - setting: eAnimChannel_Settings
594  */
595 short ANIM_channel_setting_get(bAnimContext *ac,
596                                bAnimListElem *ale,
597                                eAnimChannel_Settings setting);
598 
599 /* Change value of some setting for a channel
600  * - setting: eAnimChannel_Settings
601  * - mode: eAnimChannels_SetFlag
602  */
603 void ANIM_channel_setting_set(bAnimContext *ac,
604                               bAnimListElem *ale,
605                               eAnimChannel_Settings setting,
606                               eAnimChannels_SetFlag mode);
607 
608 /* Flush visibility (for Graph Editor) changes up/down hierarchy for changes in the given setting
609  * - anim_data: list of the all the anim channels that can be chosen
610  *   -> filtered using ANIMFILTER_CHANNELS only, since if we took VISIBLE too,
611  *      then the channels under closed expanders get ignored...
612  * - ale_setting: the anim channel (not in the anim_data list directly, though occurring there)
613  *   with the new state of the setting that we want flushed up/down the hierarchy
614  * - setting: type of setting to set
615  * - on: whether the visibility setting has been enabled or disabled
616  */
617 void ANIM_flush_setting_anim_channels(bAnimContext *ac,
618                                       ListBase *anim_data,
619                                       bAnimListElem *ale_setting,
620                                       eAnimChannel_Settings setting,
621                                       eAnimChannels_SetFlag mode);
622 
623 /* Select or deselect animation channels */
624 void ANIM_anim_channels_select_set(bAnimContext *ac, eAnimChannels_SetFlag sel);
625 
626 /* Toggle selection of animation channels */
627 void ANIM_anim_channels_select_toggle(bAnimContext *ac);
628 
629 /* Set the 'active' channel of type channel_type, in the given action */
630 void ANIM_set_active_channel(bAnimContext *ac,
631                              void *data,
632                              eAnimCont_Types datatype,
633                              eAnimFilter_Flags filter,
634                              void *channel_data,
635                              eAnim_ChannelType channel_type);
636 
637 /* Delete the F-Curve from the given AnimData block (if possible),
638  * as appropriate according to animation context */
639 void ANIM_fcurve_delete_from_animdata(bAnimContext *ac, struct AnimData *adt, struct FCurve *fcu);
640 
641 /* Unlink the action from animdata if it's empty. */
642 bool ANIM_remove_empty_action_from_animdata(struct AnimData *adt);
643 
644 /* ************************************************ */
645 /* DRAWING API */
646 /* anim_draw.c */
647 
648 /* ---------- Current Frame Drawing ---------------- */
649 
650 /* flags for Current Frame Drawing */
651 typedef enum eAnimEditDraw_CurrentFrame {
652   /* plain time indicator with no special indicators */
653   /* DRAWCFRA_PLAIN = 0, */ /* UNUSED */
654   /* time indication in seconds or frames */
655   DRAWCFRA_UNIT_SECONDS = (1 << 0),
656   /* draw indicator extra wide (for timeline) */
657   DRAWCFRA_WIDE = (1 << 1),
658 } eAnimEditDraw_CurrentFrame;
659 
660 /* main call to draw current-frame indicator in an Animation Editor */
661 void ANIM_draw_cfra(const struct bContext *C, struct View2D *v2d, short flag);
662 
663 /* ------------- Preview Range Drawing -------------- */
664 
665 /* main call to draw preview range curtains */
666 void ANIM_draw_previewrange(const struct bContext *C, struct View2D *v2d, int end_frame_width);
667 
668 /* -------------- Frame Range Drawing --------------- */
669 
670 /* main call to draw normal frame range indicators */
671 void ANIM_draw_framerange(struct Scene *scene, struct View2D *v2d);
672 
673 /* ************************************************* */
674 /* F-MODIFIER TOOLS */
675 
676 /* ------------- UI Panel Drawing -------------- */
677 
678 /* draw a given F-Modifier for some layout/UI-Block */
679 void ANIM_uiTemplate_fmodifier_draw(struct uiLayout *layout,
680                                     struct ID *fcurve_owner_id,
681                                     ListBase *modifiers,
682                                     struct FModifier *fcm);
683 
684 /* ------------- Copy/Paste Buffer -------------- */
685 
686 /* free the copy/paste buffer */
687 void ANIM_fmodifiers_copybuf_free(void);
688 
689 /* copy the given F-Modifiers to the buffer, returning whether anything was copied or not
690  * assuming that the buffer has been cleared already with ANIM_fmodifiers_copybuf_free()
691  * - active: only copy the active modifier
692  */
693 bool ANIM_fmodifiers_copy_to_buf(ListBase *modifiers, bool active);
694 
695 /* 'Paste' the F-Modifier(s) from the buffer to the specified list
696  * - replace: free all the existing modifiers to leave only the pasted ones
697  */
698 bool ANIM_fmodifiers_paste_from_buf(ListBase *modifiers, bool replace, struct FCurve *curve);
699 
700 /* ************************************************* */
701 /* ASSORTED TOOLS */
702 
703 /* ------------ Animation F-Curves <-> Icons/Names Mapping ------------ */
704 /* anim_ipo_utils.c */
705 
706 /* Get icon + name for channel-list displays for F-Curve */
707 int getname_anim_fcurve(char *name, struct ID *id, struct FCurve *fcu);
708 
709 /* Automatically determine a color for the nth F-Curve */
710 void getcolor_fcurve_rainbow(int cur, int tot, float out[3]);
711 
712 /* ----------------- NLA Drawing ----------------------- */
713 /* NOTE: Technically, this is not in the animation module (it's in space_nla)
714  * but these are sometimes needed by various animation API's.
715  */
716 
717 /* Get color to use for NLA Action channel's background */
718 void nla_action_get_color(struct AnimData *adt, struct bAction *act, float color[4]);
719 
720 /* ----------------- NLA-Mapping ----------------------- */
721 /* anim_draw.c */
722 
723 /* Obtain the AnimData block providing NLA-scaling for the given channel if applicable */
724 struct AnimData *ANIM_nla_mapping_get(bAnimContext *ac, bAnimListElem *ale);
725 
726 /* Apply/Unapply NLA mapping to all keyframes in the nominated F-Curve */
727 void ANIM_nla_mapping_apply_fcurve(struct AnimData *adt,
728                                    struct FCurve *fcu,
729                                    bool restore,
730                                    bool only_keys);
731 
732 /* ..... */
733 
734 /* Perform auto-blending/extend refreshes after some operations */
735 /* NOTE: defined in space_nla/nla_edit.c, not in animation/ */
736 void ED_nla_postop_refresh(bAnimContext *ac);
737 
738 /* ------------- Unit Conversion Mappings ------------- */
739 /* anim_draw.c */
740 
741 /* flags for conversion mapping */
742 typedef enum eAnimUnitConv_Flags {
743   /* restore to original internal values */
744   ANIM_UNITCONV_RESTORE = (1 << 0),
745   /* ignore handles (i.e. only touch main keyframes) */
746   ANIM_UNITCONV_ONLYKEYS = (1 << 1),
747   /* only touch selected BezTriples */
748   ANIM_UNITCONV_ONLYSEL = (1 << 2),
749   /* only touch selected vertices */
750   ANIM_UNITCONV_SELVERTS = (1 << 3),
751   /* ANIM_UNITCONV_SKIPKNOTS = (1 << 4), */ /* UNUSED */
752   /* Scale FCurve i a way it fits to -1..1 space */
753   ANIM_UNITCONV_NORMALIZE = (1 << 5),
754   /* Only when normalization is used: use scale factor from previous run,
755    * prevents curves from jumping all over the place when tweaking them.
756    */
757   ANIM_UNITCONV_NORMALIZE_FREEZE = (1 << 6),
758 } eAnimUnitConv_Flags;
759 
760 /* Normalization flags from Space Graph passing to ANIM_unit_mapping_get_factor */
761 short ANIM_get_normalization_flags(bAnimContext *ac);
762 
763 /* Get unit conversion factor for given ID + F-Curve */
764 float ANIM_unit_mapping_get_factor(
765     struct Scene *scene, struct ID *id, struct FCurve *fcu, short flag, float *r_offset);
766 
767 /* ------------- Utility macros ----------------------- */
768 
769 /* provide access to Keyframe Type info in BezTriple
770  * NOTE: this is so that we can change it from being stored in 'hide'
771  */
772 #define BEZKEYTYPE(bezt) ((bezt)->hide)
773 
774 /* set/clear/toggle macro
775  * - channel - channel with a 'flag' member that we're setting
776  * - smode - 0=clear, 1=set, 2=invert
777  * - sflag - bitflag to set
778  */
779 #define ACHANNEL_SET_FLAG(channel, smode, sflag) \
780   { \
781     if (smode == ACHANNEL_SETFLAG_INVERT) { \
782       (channel)->flag ^= (sflag); \
783     } \
784     else if (smode == ACHANNEL_SETFLAG_ADD) { \
785       (channel)->flag |= (sflag); \
786     } \
787     else { \
788       (channel)->flag &= ~(sflag); \
789     } \
790   } \
791   ((void)0)
792 
793 /* set/clear/toggle macro, where the flag is negative
794  * - channel - channel with a 'flag' member that we're setting
795  * - smode - 0=clear, 1=set, 2=invert
796  * - sflag - bitflag to set
797  */
798 #define ACHANNEL_SET_FLAG_NEG(channel, smode, sflag) \
799   { \
800     if (smode == ACHANNEL_SETFLAG_INVERT) { \
801       (channel)->flag ^= (sflag); \
802     } \
803     else if (smode == ACHANNEL_SETFLAG_ADD) { \
804       (channel)->flag &= ~(sflag); \
805     } \
806     else { \
807       (channel)->flag |= (sflag); \
808     } \
809   } \
810   ((void)0)
811 
812 /* --------- anim_deps.c, animation updates -------- */
813 
814 void ANIM_id_update(struct Main *bmain, struct ID *id);
815 void ANIM_list_elem_update(struct Main *bmain, struct Scene *scene, bAnimListElem *ale);
816 
817 /* data -> channels syncing */
818 void ANIM_sync_animchannels_to_data(const struct bContext *C);
819 
820 void ANIM_center_frame(struct bContext *C, int smooth_viewtx);
821 
822 /* ************************************************* */
823 /* OPERATORS */
824 
825 /* generic animation channels */
826 void ED_operatortypes_animchannels(void);
827 void ED_keymap_animchannels(struct wmKeyConfig *keyconf);
828 
829 /* generic time editing */
830 void ED_operatortypes_anim(void);
831 void ED_keymap_anim(struct wmKeyConfig *keyconf);
832 
833 /* space_graph */
834 void ED_operatormacros_graph(void);
835 /* space_action */
836 void ED_operatormacros_action(void);
837 
838 /* ************************************************ */
839 /* Animation Editor Exports */
840 /* XXX: Should we be doing these here, or at all? */
841 
842 /* Action Editor - Action Management */
843 struct AnimData *ED_actedit_animdata_from_context(struct bContext *C);
844 void ED_animedit_unlink_action(struct bContext *C,
845                                struct ID *id,
846                                struct AnimData *adt,
847                                struct bAction *act,
848                                struct ReportList *reports,
849                                bool force_delete);
850 
851 /* Drivers Editor - Utility to set up UI correctly */
852 void ED_drivers_editor_init(struct bContext *C, struct ScrArea *area);
853 
854 /* ************************************************ */
855 
856 typedef enum eAnimvizCalcRange {
857   /* Update motion paths at the current frame only. */
858   ANIMVIZ_CALC_RANGE_CURRENT_FRAME,
859 
860   /* Try to limit updates to a close neighborhood of the current frame. */
861   ANIMVIZ_CALC_RANGE_CHANGED,
862 
863   /* Update an entire range of the motion paths. */
864   ANIMVIZ_CALC_RANGE_FULL,
865 } eAnimvizCalcRange;
866 
867 struct Depsgraph *animviz_depsgraph_build(struct Main *bmain,
868                                           struct Scene *scene,
869                                           struct ViewLayer *view_layer,
870                                           struct ListBase *targets);
871 
872 void animviz_calc_motionpaths(struct Depsgraph *depsgraph,
873                               struct Main *bmain,
874                               struct Scene *scene,
875                               ListBase *targets,
876                               eAnimvizCalcRange range,
877                               bool restore);
878 
879 void animviz_get_object_motionpaths(struct Object *ob, ListBase *targets);
880 
881 #ifdef __cplusplus
882 }
883 #endif
884