source/blender/editors/space_view3d/space_view3d.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2008 Blender Foundation.
  19  * All rights reserved.
  20  *
  21  *
  22  * Contributor(s): Blender Foundation
  23  *
  24  * ***** END GPL LICENSE BLOCK *****
  25  */
  26
  27 /** \file blender/editors/space_view3d/space_view3d.c
  28  *  \ingroup spview3d
  29  */
  30
  31
  32 #include <string.h>
  33 #include <stdio.h>
  34
  35 #include "DNA_lightprobe_types.h"
  36 #include "DNA_material_types.h"
  37 #include "DNA_object_types.h"
  38 #include "DNA_scene_types.h"
  39 #include "DNA_gpencil_types.h"
  40
  41 #include "MEM_guardedalloc.h"
  42
  43 #include "BLI_blenlib.h"
  44 #include "BLI_math.h"
  45 #include "BLI_utildefines.h"
  46
  47 #include "BKE_context.h"
  48 #include "BKE_curve.h"
  49 #include "BKE_icons.h"
  50 #include "BKE_lattice.h"
  51 #include "BKE_main.h"
  52 #include "BKE_mball.h"
  53 #include "BKE_mesh.h"
  54 #include "BKE_object.h"
  55 #include "BKE_scene.h"
  56 #include "BKE_screen.h"
  57 #include "BKE_workspace.h"
  58
  59 #include "ED_space_api.h"
  60 #include "ED_screen.h"
  61 #include "ED_transform.h"
  62
  63 #include "GPU_framebuffer.h"
  64 #include "GPU_material.h"
  65 #include "GPU_viewport.h"
  66 #include "GPU_matrix.h"
  67
  68 #include "DRW_engine.h"
  69
  70 #include "WM_api.h"
  71 #include "WM_types.h"
  72 #include "WM_message.h"
  73 #include "WM_toolsystem.h"
  74
  75 #include "RE_engine.h"
  76 #include "RE_pipeline.h"
  77
  78 #include "RNA_access.h"
  79
  80 #include "UI_interface.h"
  81 #include "UI_resources.h"
  82
  83 #ifdef WITH_PYTHON
  84 #  include "BPY_extern.h"
  85 #endif
  86
  87 #include "DEG_depsgraph.h"
  88
  89 #include "view3d_intern.h"  /* own include */
  90
  91 /* ******************** manage regions ********************* */
  92
  93 ARegion *view3d_has_buttons_region(ScrArea *sa)
  94 {
  95         ARegion *ar, *arnew;
  96
  97         ar = BKE_area_find_region_type(sa, RGN_TYPE_UI);
  98         if (ar) return ar;
  99
 100         /* add subdiv level; after header */
 101         ar = BKE_area_find_region_type(sa, RGN_TYPE_HEADER);
 102
 103         /* is error! */
 104         if (ar == NULL) return NULL;
 105
 106         arnew = MEM_callocN(sizeof(ARegion), "buttons for view3d");
 107
 108         BLI_insertlinkafter(&sa->regionbase, ar, arnew);
 109         arnew->regiontype = RGN_TYPE_UI;
 110         arnew->alignment = RGN_ALIGN_RIGHT;
 111
 112         arnew->flag = RGN_FLAG_HIDDEN;
 113
 114         return arnew;
 115 }
 116
 117 ARegion *view3d_has_tools_region(ScrArea *sa)
 118 {
 119         ARegion *ar, *artool = NULL, *arhead;
 120
 121         for (ar = sa->regionbase.first; ar; ar = ar->next) {
 122                 if (ar->regiontype == RGN_TYPE_TOOLS)
 123                         artool = ar;
 124         }
 125
 126         /* tool region hide/unhide also hides props */
 127         if (artool) {
 128                 return artool;
 129         }
 130
 131         if (artool == NULL) {
 132                 /* add subdiv level; after header */
 133                 for (arhead = sa->regionbase.first; arhead; arhead = arhead->next)
 134                         if (arhead->regiontype == RGN_TYPE_HEADER)
 135                                 break;
 136
 137                 /* is error! */
 138                 if (arhead == NULL) return NULL;
 139
 140                 artool = MEM_callocN(sizeof(ARegion), "tools for view3d");
 141
 142                 BLI_insertlinkafter(&sa->regionbase, arhead, artool);
 143                 artool->regiontype = RGN_TYPE_TOOLS;
 144                 artool->alignment = RGN_ALIGN_LEFT;
 145                 artool->flag = RGN_FLAG_HIDDEN;
 146         }
 147
 148         return artool;
 149 }
 150
 151 /* ****************************************************** */
 152
 153 /* function to always find a regionview3d context inside 3D window */
 154 RegionView3D *ED_view3d_context_rv3d(bContext *C)
 155 {
 156         RegionView3D *rv3d = CTX_wm_region_view3d(C);
 157
 158         if (rv3d == NULL) {
 159                 ScrArea *sa = CTX_wm_area(C);
 160                 if (sa && sa->spacetype == SPACE_VIEW3D) {
 161                         ARegion *ar = BKE_area_find_region_active_win(sa);
 162                         if (ar) {
 163                                 rv3d = ar->regiondata;
 164                         }
 165                 }
 166         }
 167         return rv3d;
 168 }
 169
 170 /* ideally would return an rv3d but in some cases the region is needed too
 171  * so return that, the caller can then access the ar->regiondata */
 172 bool ED_view3d_context_user_region(bContext *C, View3D **r_v3d, ARegion **r_ar)
 173 {
 174         ScrArea *sa = CTX_wm_area(C);
 175
 176         *r_v3d = NULL;
 177         *r_ar = NULL;
 178
 179         if (sa && sa->spacetype == SPACE_VIEW3D) {
 180                 ARegion *ar = CTX_wm_region(C);
 181                 View3D *v3d = (View3D *)sa->spacedata.first;
 182
 183                 if (ar) {
 184                         RegionView3D *rv3d;
 185                         if ((ar->regiontype == RGN_TYPE_WINDOW) && (rv3d = ar->regiondata) && (rv3d->viewlock & RV3D_LOCKED) == 0) {
 186                                 *r_v3d = v3d;
 187                                 *r_ar = ar;
 188                                 return true;
 189                         }
 190                         else {
 191                                 ARegion *ar_unlock_user = NULL;
 192                                 ARegion *ar_unlock = NULL;
 193                                 for (ar = sa->regionbase.first; ar; ar = ar->next) {
 194                                         /* find the first unlocked rv3d */
 195                                         if (ar->regiondata && ar->regiontype == RGN_TYPE_WINDOW) {
 196                                                 rv3d = ar->regiondata;
 197                                                 if ((rv3d->viewlock & RV3D_LOCKED) == 0) {
 198                                                         ar_unlock = ar;
 199                                                         if (rv3d->persp == RV3D_PERSP || rv3d->persp == RV3D_CAMOB) {
 200                                                                 ar_unlock_user = ar;
 201                                                                 break;
 202                                                         }
 203                                                 }
 204                                         }
 205                                 }
 206
 207                                 /* camera/perspective view get priority when the active region is locked */
 208                                 if (ar_unlock_user) {
 209                                         *r_v3d = v3d;
 210                                         *r_ar = ar_unlock_user;
 211                                         return true;
 212                                 }
 213
 214                                 if (ar_unlock) {
 215                                         *r_v3d = v3d;
 216                                         *r_ar = ar_unlock;
 217                                         return true;
 218                                 }
 219                         }
 220                 }
 221         }
 222
 223         return false;
 224 }
 225
 226 /* Most of the time this isn't needed since you could assume the view matrix was
 227  * set while drawing, however when functions like mesh_foreachScreenVert are
 228  * called by selection tools, we can't be sure this object was the last.
 229  *
 230  * for example, transparent objects are drawn after editmode and will cause
 231  * the rv3d mat's to change and break selection.
 232  *
 233  * 'ED_view3d_init_mats_rv3d' should be called before
 234  * view3d_project_short_clip and view3d_project_short_noclip in cases where
 235  * these functions are not used during draw_object
 236  */
 237 void ED_view3d_init_mats_rv3d(struct Object *ob, struct RegionView3D *rv3d)
 238 {
 239         /* local viewmat and persmat, to calculate projections */
 240         mul_m4_m4m4(rv3d->viewmatob, rv3d->viewmat, ob->obmat);
 241         mul_m4_m4m4(rv3d->persmatob, rv3d->persmat, ob->obmat);
 242
 243         /* initializes object space clipping, speeds up clip tests */
 244         ED_view3d_clipping_local(rv3d, ob->obmat);
 245 }
 246
 247 void ED_view3d_init_mats_rv3d_gl(struct Object *ob, struct RegionView3D *rv3d)
 248 {
 249         ED_view3d_init_mats_rv3d(ob, rv3d);
 250
 251         /* we have to multiply instead of loading viewmatob to make
 252          * it work with duplis using displists, otherwise it will
 253          * override the dupli-matrix */
 254         GPU_matrix_mul(ob->obmat);
 255 }
 256
 257 #ifdef DEBUG
 258 /* ensure we correctly initialize */
 259 void ED_view3d_clear_mats_rv3d(struct RegionView3D *rv3d)
 260 {
 261         zero_m4(rv3d->viewmatob);
 262         zero_m4(rv3d->persmatob);
 263 }
 264
 265 void ED_view3d_check_mats_rv3d(struct RegionView3D *rv3d)
 266 {
 267         BLI_ASSERT_ZERO_M4(rv3d->viewmatob);
 268         BLI_ASSERT_ZERO_M4(rv3d->persmatob);
 269 }
 270 #endif
 271
 272 void ED_view3d_stop_render_preview(wmWindowManager *wm, ARegion *ar)
 273 {
 274         RegionView3D *rv3d = ar->regiondata;
 275
 276         if (rv3d->render_engine) {
 277 #ifdef WITH_PYTHON
 278                 BPy_BEGIN_ALLOW_THREADS;
 279 #endif
 280
 281                 WM_jobs_kill_type(wm, ar, WM_JOB_TYPE_RENDER_PREVIEW);
 282
 283 #ifdef WITH_PYTHON
 284                 BPy_END_ALLOW_THREADS;
 285 #endif
 286
 287                 RE_engine_free(rv3d->render_engine);
 288                 rv3d->render_engine = NULL;
 289         }
 290 }
 291
 292 void ED_view3d_shade_update(Main *bmain, View3D *v3d, ScrArea *sa)
 293 {
 294         wmWindowManager *wm = bmain->wm.first;
 295
 296         if (v3d->shading.type != OB_RENDER) {
 297                 ARegion *ar;
 298
 299                 for (ar = sa->regionbase.first; ar; ar = ar->next) {
 300                         if ((ar->regiontype == RGN_TYPE_WINDOW) && ar->regiondata) {
 301                                 ED_view3d_stop_render_preview(wm, ar);
 302                                 break;
 303                         }
 304                 }
 305         }
 306 }
 307
 308 /* ******************** default callbacks for view3d space ***************** */
 309
 310 static SpaceLink *view3d_new(const ScrArea *UNUSED(sa), const Scene *scene)
 311 {
 312         ARegion *ar;
 313         View3D *v3d;
 314         RegionView3D *rv3d;
 315
 316         v3d = MEM_callocN(sizeof(View3D), "initview3d");
 317         v3d->spacetype = SPACE_VIEW3D;
 318         if (scene) {
 319                 v3d->camera = scene->camera;
 320         }
 321         v3d->scenelock = true;
 322         v3d->grid = 1.0f;
 323         v3d->gridlines = 16;
 324         v3d->gridsubdiv = 10;
 325         BKE_screen_view3d_shading_init(&v3d->shading);
 326
 327         v3d->overlay.wireframe_threshold = 0.5f;
 328         v3d->overlay.xray_alpha_bone = 0.5f;
 329         v3d->overlay.texture_paint_mode_opacity = 0.8;
 330         v3d->overlay.weight_paint_mode_opacity = 1.0f;
 331         v3d->overlay.vertex_paint_mode_opacity = 0.8;
 332         v3d->overlay.edit_flag = V3D_OVERLAY_EDIT_FACES |
 333                                  V3D_OVERLAY_EDIT_SEAMS |
 334                                  V3D_OVERLAY_EDIT_SHARP |
 335                                  V3D_OVERLAY_EDIT_FREESTYLE_EDGE |
 336                                  V3D_OVERLAY_EDIT_FREESTYLE_FACE |
 337                                  V3D_OVERLAY_EDIT_EDGES |
 338                                  V3D_OVERLAY_EDIT_CREASES |
 339                                  V3D_OVERLAY_EDIT_BWEIGHTS |
 340                                  V3D_OVERLAY_EDIT_CU_HANDLES |
 341                                  V3D_OVERLAY_EDIT_CU_NORMALS;
 342
 343         v3d->gridflag = V3D_SHOW_X | V3D_SHOW_Y | V3D_SHOW_FLOOR;
 344
 345         v3d->flag = V3D_SELECT_OUTLINE;
 346         v3d->flag2 = V3D_SHOW_RECONSTRUCTION | V3D_SHOW_ANNOTATION;
 347
 348         v3d->lens = 50.0f;
 349         v3d->near = 0.01f;
 350         v3d->far = 1000.0f;
 351
 352         v3d->overlay.gpencil_paper_opacity = 0.5f;
 353         v3d->overlay.gpencil_grid_opacity = 0.9f;
 354
 355         v3d->bundle_size = 0.2f;
 356         v3d->bundle_drawtype = OB_PLAINAXES;
 357
 358         /* stereo */
 359         v3d->stereo3d_camera = STEREO_3D_ID;
 360         v3d->stereo3d_flag |= V3D_S3D_DISPPLANE;
 361         v3d->stereo3d_convergence_alpha = 0.15f;
 362         v3d->stereo3d_volume_alpha = 0.05f;
 363
 364         /* grease pencil settings */
 365         v3d->vertex_opacity = 1.0f;
 366         v3d->gp_flag |= V3D_GP_SHOW_EDIT_LINES;
 367
 368         /* header */
 369         ar = MEM_callocN(sizeof(ARegion), "header for view3d");
 370
 371         BLI_addtail(&v3d->regionbase, ar);
 372         ar->regiontype = RGN_TYPE_HEADER;
 373         ar->alignment = RGN_ALIGN_TOP;
 374
 375         /* tool shelf */
 376         ar = MEM_callocN(sizeof(ARegion), "toolshelf for view3d");
 377
 378         BLI_addtail(&v3d->regionbase, ar);
 379         ar->regiontype = RGN_TYPE_TOOLS;
 380         ar->alignment = RGN_ALIGN_LEFT;
 381         ar->flag = RGN_FLAG_HIDDEN;
 382
 383         /* buttons/list view */
 384         ar = MEM_callocN(sizeof(ARegion), "buttons for view3d");
 385
 386         BLI_addtail(&v3d->regionbase, ar);
 387         ar->regiontype = RGN_TYPE_UI;
 388         ar->alignment = RGN_ALIGN_RIGHT;
 389         ar->flag = RGN_FLAG_HIDDEN;
 390
 391         /* main region */
 392         ar = MEM_callocN(sizeof(ARegion), "main region for view3d");
 393
 394         BLI_addtail(&v3d->regionbase, ar);
 395         ar->regiontype = RGN_TYPE_WINDOW;
 396
 397         ar->regiondata = MEM_callocN(sizeof(RegionView3D), "region view3d");
 398         rv3d = ar->regiondata;
 399         rv3d->viewquat[0] = 1.0f;
 400         rv3d->persp = RV3D_PERSP;
 401         rv3d->view = RV3D_VIEW_USER;
 402         rv3d->dist = 10.0;
 403
 404         return (SpaceLink *)v3d;
 405 }
 406
 407 /* not spacelink itself */
 408 static void view3d_free(SpaceLink *sl)
 409 {
 410         View3D *vd = (View3D *) sl;
 411
 412         if (vd->localvd) MEM_freeN(vd->localvd);
 413
 414         if (vd->properties_storage) MEM_freeN(vd->properties_storage);
 415
 416         if (vd->fx_settings.ssao)
 417                 MEM_freeN(vd->fx_settings.ssao);
 418         if (vd->fx_settings.dof)
 419                 MEM_freeN(vd->fx_settings.dof);
 420 }
 421
 422
 423 /* spacetype; init callback */
 424 static void view3d_init(wmWindowManager *UNUSED(wm), ScrArea *UNUSED(sa))
 425 {
 426
 427 }
 428
 429 static SpaceLink *view3d_duplicate(SpaceLink *sl)
 430 {
 431         View3D *v3do = (View3D *)sl;
 432         View3D *v3dn = MEM_dupallocN(sl);
 433
 434         /* clear or remove stuff from old */
 435
 436         if (v3dn->localvd) {
 437                 v3dn->localvd = NULL;
 438                 v3dn->properties_storage = NULL;
 439         }
 440
 441         if (v3dn->shading.type == OB_RENDER)
 442                 v3dn->shading.type = OB_SOLID;
 443
 444         /* copy or clear inside new stuff */
 445
 446         v3dn->properties_storage = NULL;
 447         if (v3dn->fx_settings.dof)
 448                 v3dn->fx_settings.dof = MEM_dupallocN(v3do->fx_settings.dof);
 449         if (v3dn->fx_settings.ssao)
 450                 v3dn->fx_settings.ssao = MEM_dupallocN(v3do->fx_settings.ssao);
 451
 452         return (SpaceLink *)v3dn;
 453 }
 454
 455 /* add handlers, stuff you only do once or on area/region changes */
 456 static void view3d_main_region_init(wmWindowManager *wm, ARegion *ar)
 457 {
 458         ListBase *lb;
 459         wmKeyMap *keymap;
 460
 461         /* object ops. */
 462
 463         /* important to be before Pose keymap since they can both be enabled at once */
 464         keymap = WM_keymap_ensure(wm->defaultconf, "Face Mask", 0, 0);
 465         WM_event_add_keymap_handler(&ar->handlers, keymap);
 466
 467
 468         keymap = WM_keymap_ensure(wm->defaultconf, "Weight Paint Vertex Selection", 0, 0);
 469         WM_event_add_keymap_handler(&ar->handlers, keymap);
 470
 471         /* pose is not modal, operator poll checks for this */
 472         keymap = WM_keymap_ensure(wm->defaultconf, "Pose", 0, 0);
 473         WM_event_add_keymap_handler(&ar->handlers, keymap);
 474
 475         keymap = WM_keymap_ensure(wm->defaultconf, "Object Mode", 0, 0);
 476         WM_event_add_keymap_handler(&ar->handlers, keymap);
 477
 478         keymap = WM_keymap_ensure(wm->defaultconf, "Paint Curve", 0, 0);
 479         WM_event_add_keymap_handler(&ar->handlers, keymap);
 480
 481         keymap = WM_keymap_ensure(wm->defaultconf, "Curve", 0, 0);
 482         WM_event_add_keymap_handler(&ar->handlers, keymap);
 483
 484         keymap = WM_keymap_ensure(wm->defaultconf, "Image Paint", 0, 0);
 485         WM_event_add_keymap_handler(&ar->handlers, keymap);
 486
 487         keymap = WM_keymap_ensure(wm->defaultconf, "Vertex Paint", 0, 0);
 488         WM_event_add_keymap_handler(&ar->handlers, keymap);
 489
 490         keymap = WM_keymap_ensure(wm->defaultconf, "Weight Paint", 0, 0);
 491         WM_event_add_keymap_handler(&ar->handlers, keymap);
 492
 493         keymap = WM_keymap_ensure(wm->defaultconf, "Sculpt", 0, 0);
 494         WM_event_add_keymap_handler(&ar->handlers, keymap);
 495
 496         keymap = WM_keymap_ensure(wm->defaultconf, "Mesh", 0, 0);
 497         WM_event_add_keymap_handler(&ar->handlers, keymap);
 498
 499         keymap = WM_keymap_ensure(wm->defaultconf, "Curve", 0, 0);
 500         WM_event_add_keymap_handler(&ar->handlers, keymap);
 501
 502         keymap = WM_keymap_ensure(wm->defaultconf, "Armature", 0, 0);
 503         WM_event_add_keymap_handler(&ar->handlers, keymap);
 504
 505         keymap = WM_keymap_ensure(wm->defaultconf, "Pose", 0, 0);
 506         WM_event_add_keymap_handler(&ar->handlers, keymap);
 507
 508         keymap = WM_keymap_ensure(wm->defaultconf, "Metaball", 0, 0);
 509         WM_event_add_keymap_handler(&ar->handlers, keymap);
 510
 511         keymap = WM_keymap_ensure(wm->defaultconf, "Lattice", 0, 0);
 512         WM_event_add_keymap_handler(&ar->handlers, keymap);
 513
 514         keymap = WM_keymap_ensure(wm->defaultconf, "Particle", 0, 0);
 515         WM_event_add_keymap_handler(&ar->handlers, keymap);
 516
 517         /* editfont keymap swallows all... */
 518         keymap = WM_keymap_ensure(wm->defaultconf, "Font", 0, 0);
 519         WM_event_add_keymap_handler(&ar->handlers, keymap);
 520
 521         keymap = WM_keymap_ensure(wm->defaultconf, "Object Non-modal", 0, 0);
 522         WM_event_add_keymap_handler(&ar->handlers, keymap);
 523
 524         keymap = WM_keymap_ensure(wm->defaultconf, "Frames", 0, 0);
 525         WM_event_add_keymap_handler(&ar->handlers, keymap);
 526
 527         /* own keymap, last so modes can override it */
 528         keymap = WM_keymap_ensure(wm->defaultconf, "3D View Generic", SPACE_VIEW3D, 0);
 529         WM_event_add_keymap_handler(&ar->handlers, keymap);
 530
 531         keymap = WM_keymap_ensure(wm->defaultconf, "3D View", SPACE_VIEW3D, 0);
 532         WM_event_add_keymap_handler(&ar->handlers, keymap);
 533
 534         /* add drop boxes */
 535         lb = WM_dropboxmap_find("View3D", SPACE_VIEW3D, RGN_TYPE_WINDOW);
 536
 537         WM_event_add_dropbox_handler(&ar->handlers, lb);
 538
 539 }
 540
 541 static void view3d_main_region_exit(wmWindowManager *wm, ARegion *ar)
 542 {
 543         RegionView3D *rv3d = ar->regiondata;
 544
 545         ED_view3d_stop_render_preview(wm, ar);
 546
 547         if (rv3d->gpuoffscreen) {
 548                 GPU_offscreen_free(rv3d->gpuoffscreen);
 549                 rv3d->gpuoffscreen = NULL;
 550         }
 551 }
 552
 553 static bool view3d_ob_drop_poll(bContext *UNUSED(C), wmDrag *drag, const wmEvent *UNUSED(event), const char **UNUSED(tooltip))
 554 {
 555         return WM_drag_ID(drag, ID_OB) != NULL;
 556 }
 557
 558 static bool view3d_collection_drop_poll(bContext *UNUSED(C), wmDrag *drag, const wmEvent *UNUSED(event), const char **UNUSED(tooltip))
 559 {
 560         return WM_drag_ID(drag, ID_GR) != NULL;
 561 }
 562
 563 static bool view3d_mat_drop_poll(bContext *UNUSED(C), wmDrag *drag, const wmEvent *UNUSED(event), const char **UNUSED(tooltip))
 564 {
 565         return WM_drag_ID(drag, ID_MA) != NULL;
 566 }
 567
 568 static bool view3d_ima_drop_poll(bContext *UNUSED(C), wmDrag *drag, const wmEvent *UNUSED(event), const char **UNUSED(tooltip))
 569 {
 570         if (drag->type == WM_DRAG_PATH) {
 571                 return (ELEM(drag->icon, 0, ICON_FILE_IMAGE, ICON_FILE_MOVIE));   /* rule might not work? */
 572         }
 573         else {
 574                 return WM_drag_ID(drag, ID_IM) != NULL;
 575         }
 576 }
 577
 578 static bool view3d_ima_bg_is_camera_view(bContext *C)
 579 {
 580         RegionView3D *rv3d = CTX_wm_region_view3d(C);
 581         if ((rv3d && (rv3d->persp == RV3D_CAMOB))) {
 582                 View3D *v3d = CTX_wm_view3d(C);
 583                 if (v3d && v3d->camera && v3d->camera->type == OB_CAMERA) {
 584                         return true;
 585                 }
 586         }
 587         return false;
 588 }
 589
 590 static bool view3d_ima_bg_drop_poll(bContext *C, wmDrag *drag, const wmEvent *event, const char **tooltip)
 591 {
 592         if (!view3d_ima_drop_poll(C, drag, event, tooltip)) {
 593                 return false;
 594         }
 595
 596         if (ED_view3d_is_object_under_cursor(C, event->mval)) {
 597                 return false;
 598         }
 599
 600         return view3d_ima_bg_is_camera_view(C);
 601 }
 602
 603 static bool view3d_ima_empty_drop_poll(bContext *C, wmDrag *drag, const wmEvent *event, const char **tooltip)
 604 {
 605         if (!view3d_ima_drop_poll(C, drag, event, tooltip)) {
 606                 return false;
 607         }
 608
 609         Object *ob = ED_view3d_give_object_under_cursor(C, event->mval);
 610
 611         if (ob == NULL) {
 612                 return true;
 613         }
 614
 615         if (ob->type == OB_EMPTY && ob->empty_drawtype == OB_EMPTY_IMAGE) {
 616                 return true;
 617         }
 618
 619         return false;
 620 }
 621
 622 static void view3d_ob_drop_copy(wmDrag *drag, wmDropBox *drop)
 623 {
 624         ID *id = WM_drag_ID(drag, ID_OB);
 625
 626         RNA_string_set(drop->ptr, "name", id->name + 2);
 627 }
 628
 629 static void view3d_collection_drop_copy(wmDrag *drag, wmDropBox *drop)
 630 {
 631         ID *id = WM_drag_ID(drag, ID_GR);
 632
 633         drop->opcontext = WM_OP_EXEC_DEFAULT;
 634         RNA_string_set(drop->ptr, "name", id->name + 2);
 635 }
 636
 637 static void view3d_id_drop_copy(wmDrag *drag, wmDropBox *drop)
 638 {
 639         ID *id = WM_drag_ID(drag, 0);
 640
 641         RNA_string_set(drop->ptr, "name", id->name + 2);
 642 }
 643
 644 static void view3d_id_path_drop_copy(wmDrag *drag, wmDropBox *drop)
 645 {
 646         ID *id = WM_drag_ID(drag, 0);
 647
 648         if (id) {
 649                 RNA_string_set(drop->ptr, "name", id->name + 2);
 650                 RNA_struct_property_unset(drop->ptr, "filepath");
 651         }
 652         else if (drag->path[0]) {
 653                 RNA_string_set(drop->ptr, "filepath", drag->path);
 654                 RNA_struct_property_unset(drop->ptr, "image");
 655         }
 656 }
 657
 658 static void view3d_lightcache_update(bContext *C)
 659 {
 660         PointerRNA op_ptr;
 661
 662         Scene *scene = CTX_data_scene(C);
 663
 664         if (strcmp(scene->r.engine, RE_engine_id_BLENDER_EEVEE) != 0) {
 665                 /* Only do auto bake if eevee is the active engine */
 666                 return;
 667         }
 668
 669         WM_operator_properties_create(&op_ptr, "SCENE_OT_light_cache_bake");
 670         RNA_int_set(&op_ptr, "delay", 200);
 671         RNA_enum_set_identifier(C, &op_ptr, "subset", "DIRTY");
 672
 673         WM_operator_name_call(C, "SCENE_OT_light_cache_bake", WM_OP_INVOKE_DEFAULT, &op_ptr);
 674
 675         WM_operator_properties_free(&op_ptr);
 676 }
 677
 678 /* region dropbox definition */
 679 static void view3d_dropboxes(void)
 680 {
 681         ListBase *lb = WM_dropboxmap_find("View3D", SPACE_VIEW3D, RGN_TYPE_WINDOW);
 682
 683         WM_dropbox_add(lb, "OBJECT_OT_add_named", view3d_ob_drop_poll, view3d_ob_drop_copy);
 684         WM_dropbox_add(lb, "OBJECT_OT_drop_named_material", view3d_mat_drop_poll, view3d_id_drop_copy);
 685         WM_dropbox_add(lb, "VIEW3D_OT_background_image_add", view3d_ima_bg_drop_poll, view3d_id_path_drop_copy);
 686         WM_dropbox_add(lb, "OBJECT_OT_drop_named_image", view3d_ima_empty_drop_poll, view3d_id_path_drop_copy);
 687         WM_dropbox_add(lb, "OBJECT_OT_collection_instance_add", view3d_collection_drop_poll, view3d_collection_drop_copy);
 688 }
 689
 690 static void view3d_widgets(void)
 691 {
 692         wmGizmoMapType *gzmap_type = WM_gizmomaptype_ensure(
 693                 &(const struct wmGizmoMapType_Params){SPACE_VIEW3D, RGN_TYPE_WINDOW});
 694
 695         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_lamp_spot);
 696         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_lamp_area);
 697         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_lamp_target);
 698         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_force_field);
 699         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_camera);
 700         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_camera_view);
 701         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_empty_image);
 702         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_armature_spline);
 703
 704         WM_gizmogrouptype_append(TRANSFORM_GGT_gizmo);
 705         WM_gizmogrouptype_append(VIEW3D_GGT_xform_cage);
 706         WM_gizmogrouptype_append(VIEW3D_GGT_xform_shear);
 707         WM_gizmogrouptype_append(VIEW3D_GGT_xform_extrude);
 708         WM_gizmogrouptype_append(VIEW3D_GGT_mesh_preselect_elem);
 709         WM_gizmogrouptype_append(VIEW3D_GGT_mesh_preselect_edgering);
 710
 711         WM_gizmogrouptype_append(VIEW3D_GGT_ruler);
 712         WM_gizmotype_append(VIEW3D_GT_ruler_item);
 713
 714         WM_gizmogrouptype_append_and_link(gzmap_type, VIEW3D_GGT_navigate);
 715         WM_gizmotype_append(VIEW3D_GT_navigate_rotate);
 716 }
 717
 718
 719 /* type callback, not region itself */
 720 static void view3d_main_region_free(ARegion *ar)
 721 {
 722         RegionView3D *rv3d = ar->regiondata;
 723
 724         if (rv3d) {
 725                 if (rv3d->localvd) MEM_freeN(rv3d->localvd);
 726                 if (rv3d->clipbb) MEM_freeN(rv3d->clipbb);
 727
 728                 if (rv3d->render_engine)
 729                         RE_engine_free(rv3d->render_engine);
 730
 731                 if (rv3d->depths) {
 732                         if (rv3d->depths->depths) MEM_freeN(rv3d->depths->depths);
 733                         MEM_freeN(rv3d->depths);
 734                 }
 735                 if (rv3d->sms) {
 736                         MEM_freeN(rv3d->sms);
 737                 }
 738                 if (rv3d->gpuoffscreen) {
 739                         GPU_offscreen_free(rv3d->gpuoffscreen);
 740                 }
 741
 742                 MEM_freeN(rv3d);
 743                 ar->regiondata = NULL;
 744         }
 745 }
 746
 747 /* copy regiondata */
 748 static void *view3d_main_region_duplicate(void *poin)
 749 {
 750         if (poin) {
 751                 RegionView3D *rv3d = poin, *new;
 752
 753                 new = MEM_dupallocN(rv3d);
 754                 if (rv3d->localvd)
 755                         new->localvd = MEM_dupallocN(rv3d->localvd);
 756                 if (rv3d->clipbb)
 757                         new->clipbb = MEM_dupallocN(rv3d->clipbb);
 758
 759                 new->depths = NULL;
 760                 new->gpuoffscreen = NULL;
 761                 new->render_engine = NULL;
 762                 new->sms = NULL;
 763                 new->smooth_timer = NULL;
 764
 765                 return new;
 766         }
 767         return NULL;
 768 }
 769
 770 static void view3d_main_region_listener(
 771         wmWindow *UNUSED(win), ScrArea *sa, ARegion *ar,
 772         wmNotifier *wmn, const Scene *scene)
 773 {
 774         View3D *v3d = sa->spacedata.first;
 775         RegionView3D *rv3d = ar->regiondata;
 776         wmGizmoMap *gzmap = ar->gizmo_map;
 777
 778         /* context changes */
 779         switch (wmn->category) {
 780                 case NC_WM:
 781                         if (ELEM(wmn->data, ND_UNDO)) {
 782                                 WM_gizmomap_tag_refresh(gzmap);
 783                         }
 784                         break;
 785                 case NC_ANIMATION:
 786                         switch (wmn->data) {
 787                                 case ND_KEYFRAME_PROP:
 788                                 case ND_NLA_ACTCHANGE:
 789                                         ED_region_tag_redraw(ar);
 790                                         break;
 791                                 case ND_NLA:
 792                                 case ND_KEYFRAME:
 793                                         if (ELEM(wmn->action, NA_EDITED, NA_ADDED, NA_REMOVED))
 794                                                 ED_region_tag_redraw(ar);
 795                                         break;
 796                                 case ND_ANIMCHAN:
 797                                         if (wmn->action == NA_SELECTED)
 798                                                 ED_region_tag_redraw(ar);
 799                                         break;
 800                         }
 801                         break;
 802                 case NC_SCENE:
 803                         switch (wmn->data) {
 804                                 case ND_SCENEBROWSE:
 805                                 case ND_LAYER_CONTENT:
 806                                         ED_region_tag_redraw(ar);
 807                                         WM_gizmomap_tag_refresh(gzmap);
 808                                         break;
 809                                 case ND_LAYER:
 810                                         if (wmn->reference) {
 811                                                 BKE_screen_view3d_sync(v3d, wmn->reference);
 812                                         }
 813                                         ED_region_tag_redraw(ar);
 814                                         WM_gizmomap_tag_refresh(gzmap);
 815                                         break;
 816                                 case ND_OB_ACTIVE:
 817                                 case ND_OB_SELECT:
 818                                         ATTR_FALLTHROUGH;
 819                                 case ND_FRAME:
 820                                 case ND_TRANSFORM:
 821                                 case ND_OB_VISIBLE:
 822                                 case ND_RENDER_OPTIONS:
 823                                 case ND_MARKERS:
 824                                 case ND_MODE:
 825                                         ED_region_tag_redraw(ar);
 826                                         WM_gizmomap_tag_refresh(gzmap);
 827                                         break;
 828                                 case ND_WORLD:
 829                                         /* handled by space_view3d_listener() for v3d access */
 830                                         break;
 831                                 case ND_DRAW_RENDER_VIEWPORT:
 832                                 {
 833                                         if (v3d->camera && (scene == wmn->reference)) {
 834                                                 if (rv3d->persp == RV3D_CAMOB) {
 835                                                         ED_region_tag_redraw(ar);
 836                                                 }
 837                                         }
 838                                         break;
 839                                 }
 840                         }
 841                         if (wmn->action == NA_EDITED)
 842                                 ED_region_tag_redraw(ar);
 843                         break;
 844                 case NC_OBJECT:
 845                         switch (wmn->data) {
 846                                 case ND_BONE_ACTIVE:
 847                                 case ND_BONE_SELECT:
 848                                 case ND_TRANSFORM:
 849                                 case ND_POSE:
 850                                 case ND_DRAW:
 851                                 case ND_MODIFIER:
 852                                 case ND_CONSTRAINT:
 853                                 case ND_KEYS:
 854                                 case ND_PARTICLE:
 855                                 case ND_POINTCACHE:
 856                                 case ND_LOD:
 857                                         ED_region_tag_redraw(ar);
 858                                         WM_gizmomap_tag_refresh(gzmap);
 859                                         break;
 860                         }
 861                         switch (wmn->action) {
 862                                 case NA_ADDED:
 863                                         ED_region_tag_redraw(ar);
 864                                         break;
 865                         }
 866                         break;
 867                 case NC_GEOM:
 868                         switch (wmn->data) {
 869                                 case ND_SELECT:
 870                                 {
 871                                         WM_gizmomap_tag_refresh(gzmap);
 872                                         ATTR_FALLTHROUGH;
 873                                 }
 874                                 case ND_DATA:
 875                                 case ND_VERTEX_GROUP:
 876                                         ED_region_tag_redraw(ar);
 877                                         break;
 878                         }
 879                         switch (wmn->action) {
 880                                 case NA_EDITED:
 881                                         ED_region_tag_redraw(ar);
 882                                         break;
 883                         }
 884                         break;
 885                 case NC_CAMERA:
 886                         switch (wmn->data) {
 887                                 case ND_DRAW_RENDER_VIEWPORT:
 888                                 {
 889                                         if (v3d->camera && (v3d->camera->data == wmn->reference)) {
 890                                                 if (rv3d->persp == RV3D_CAMOB) {
 891                                                         ED_region_tag_redraw(ar);
 892                                                 }
 893                                         }
 894                                         break;
 895                                 }
 896                         }
 897                         break;
 898                 case NC_GROUP:
 899                         /* all group ops for now */
 900                         ED_region_tag_redraw(ar);
 901                         break;
 902                 case NC_BRUSH:
 903                         switch (wmn->action) {
 904                                 case NA_EDITED:
 905                                         ED_region_tag_redraw_overlay(ar);
 906                                         break;
 907                                 case NA_SELECTED:
 908                                         /* used on brush changes - needed because 3d cursor
 909                                          * has to be drawn if clone brush is selected */
 910                                         ED_region_tag_redraw(ar);
 911                                         break;
 912                         }
 913                         break;
 914                 case NC_MATERIAL:
 915                         switch (wmn->data) {
 916                                 case ND_SHADING:
 917                                 case ND_NODES:
 918                                         /* TODO(sergey) This is a bit too much updates, but needed to
 919                                          * have proper material drivers update in the viewport.
 920                                          *
 921                                          * How to solve?
 922                                          */
 923                                         ED_region_tag_redraw(ar);
 924                                         break;
 925                                 case ND_SHADING_DRAW:
 926                                 case ND_SHADING_LINKS:
 927                                         ED_region_tag_redraw(ar);
 928                                         break;
 929                         }
 930                         break;
 931                 case NC_WORLD:
 932                         switch (wmn->data) {
 933                                 case ND_WORLD_DRAW:
 934                                         /* handled by space_view3d_listener() for v3d access */
 935                                         break;
 936                                 case ND_WORLD:
 937                                         /* Needed for updating world materials */
 938                                         ED_region_tag_redraw(ar);
 939                                         break;
 940                         }
 941                         break;
 942                 case NC_LAMP:
 943                         switch (wmn->data) {
 944                                 case ND_LIGHTING:
 945                                         /* TODO(sergey): This is a bit too much, but needed to
 946                                          * handle updates from new depsgraph.
 947                                          */
 948                                         ED_region_tag_redraw(ar);
 949                                         break;
 950                                 case ND_LIGHTING_DRAW:
 951                                         ED_region_tag_redraw(ar);
 952                                         WM_gizmomap_tag_refresh(gzmap);
 953                                         break;
 954                         }
 955                         break;
 956                 case NC_LIGHTPROBE:
 957                         ED_area_tag_refresh(sa);
 958                         break;
 959                 case NC_IMAGE:
 960                         /* this could be more fine grained checks if we had
 961                          * more context than just the region */
 962                         ED_region_tag_redraw(ar);
 963                         break;
 964                 case NC_TEXTURE:
 965                         /* same as above */
 966                         ED_region_tag_redraw(ar);
 967                         break;
 968                 case NC_MOVIECLIP:
 969                         if (wmn->data == ND_DISPLAY || wmn->action == NA_EDITED)
 970                                 ED_region_tag_redraw(ar);
 971                         break;
 972                 case NC_SPACE:
 973                         if (wmn->data == ND_SPACE_VIEW3D) {
 974                                 if (wmn->subtype == NS_VIEW3D_GPU) {
 975                                         rv3d->rflag |= RV3D_GPULIGHT_UPDATE;
 976                                 }
 977                                 ED_region_tag_redraw(ar);
 978                                 WM_gizmomap_tag_refresh(gzmap);
 979                         }
 980                         break;
 981                 case NC_ID:
 982                         if (wmn->action == NA_RENAME)
 983                                 ED_region_tag_redraw(ar);
 984                         break;
 985                 case NC_SCREEN:
 986                         switch (wmn->data) {
 987                                 case ND_ANIMPLAY:
 988                                 case ND_SKETCH:
 989                                         ED_region_tag_redraw(ar);
 990                                         break;
 991                                 case ND_LAYOUTBROWSE:
 992                                 case ND_LAYOUTDELETE:
 993                                 case ND_LAYOUTSET:
 994                                         WM_gizmomap_tag_refresh(gzmap);
 995                                         ED_region_tag_redraw(ar);
 996                                         break;
 997                                 case ND_LAYER:
 998                                         ED_region_tag_redraw(ar);
 999                                         break;
1000                         }
1001
1002                         break;
1003                 case NC_GPENCIL:
1004                         if (wmn->data == ND_DATA || ELEM(wmn->action, NA_EDITED, NA_SELECTED)) {
1005                                 ED_region_tag_redraw(ar);
1006                         }
1007                         break;
1008         }
1009 }
1010
1011 static void view3d_main_region_message_subscribe(
1012         const struct bContext *C,
1013         struct WorkSpace *UNUSED(workspace), struct Scene *UNUSED(scene),
1014         struct bScreen *UNUSED(screen), struct ScrArea *sa, struct ARegion *ar,
1015         struct wmMsgBus *mbus)
1016 {
1017         /* Developer note: there are many properties that impact 3D view drawing,
1018          * so instead of subscribing to individual properties, just subscribe to types
1019          * accepting some redundant redraws.
1020          *
1021          * For other space types we might try avoid this, keep the 3D view as an exceptional case! */
1022         wmMsgParams_RNA msg_key_params = {{{0}}};
1023
1024         /* Only subscribe to types. */
1025         StructRNA *type_array[] = {
1026                 &RNA_Window,
1027
1028                 /* These object have properties that impact drawing. */
1029                 &RNA_AreaLight,
1030                 &RNA_Camera,
1031                 &RNA_Light,
1032                 &RNA_Speaker,
1033                 &RNA_SunLight,
1034
1035                 /* General types the 3D view depends on. */
1036                 &RNA_Object,
1037                 &RNA_UnitSettings,  /* grid-floor */
1038
1039                 &RNA_View3DOverlay,
1040                 &RNA_View3DShading,
1041                 &RNA_World,
1042         };
1043
1044         wmMsgSubscribeValue msg_sub_value_region_tag_redraw = {
1045                 .owner = ar,
1046                 .user_data = ar,
1047                 .notify = ED_region_do_msg_notify_tag_redraw,
1048         };
1049
1050         for (int i = 0; i < ARRAY_SIZE(type_array); i++) {
1051                 msg_key_params.ptr.type = type_array[i];
1052                 WM_msg_subscribe_rna_params(
1053                         mbus,
1054                         &msg_key_params,
1055                         &msg_sub_value_region_tag_redraw,
1056                         __func__);
1057         }
1058
1059         /* Subscribe to a handful of other properties. */
1060         RegionView3D *rv3d = ar->regiondata;
1061
1062         WM_msg_subscribe_rna_anon_prop(mbus, RenderSettings, engine, &msg_sub_value_region_tag_redraw);
1063         WM_msg_subscribe_rna_anon_prop(mbus, RenderSettings, resolution_x, &msg_sub_value_region_tag_redraw);
1064         WM_msg_subscribe_rna_anon_prop(mbus, RenderSettings, resolution_y, &msg_sub_value_region_tag_redraw);
1065         WM_msg_subscribe_rna_anon_prop(mbus, RenderSettings, pixel_aspect_x, &msg_sub_value_region_tag_redraw);
1066         WM_msg_subscribe_rna_anon_prop(mbus, RenderSettings, pixel_aspect_y, &msg_sub_value_region_tag_redraw);
1067         if (rv3d->persp == RV3D_CAMOB) {
1068                 WM_msg_subscribe_rna_anon_prop(mbus, RenderSettings, use_border, &msg_sub_value_region_tag_redraw);
1069         }
1070
1071         WM_msg_subscribe_rna_anon_type(mbus, SceneEEVEE, &msg_sub_value_region_tag_redraw);
1072         WM_msg_subscribe_rna_anon_type(mbus, SceneDisplay, &msg_sub_value_region_tag_redraw);
1073         WM_msg_subscribe_rna_anon_type(mbus, ObjectDisplay, &msg_sub_value_region_tag_redraw);
1074
1075         ViewLayer *view_layer = CTX_data_view_layer(C);
1076         Object *obact = OBACT(view_layer);
1077         if (obact != NULL) {
1078                 switch (obact->mode) {
1079                         case OB_MODE_PARTICLE_EDIT:
1080                                 WM_msg_subscribe_rna_anon_type(mbus, ParticleEdit, &msg_sub_value_region_tag_redraw);
1081                                 break;
1082                         default:
1083                                 break;
1084                 }
1085         }
1086
1087         {
1088                 wmMsgSubscribeValue msg_sub_value_region_tag_refresh = {
1089                         .owner = ar,
1090                         .user_data = sa,
1091                         .notify = WM_toolsystem_do_msg_notify_tag_refresh,
1092                 };
1093                 WM_msg_subscribe_rna_anon_prop(
1094                         mbus, Object, mode,
1095                         &msg_sub_value_region_tag_refresh);
1096         }
1097 }
1098
1099 /* concept is to retrieve cursor type context-less */
1100 static void view3d_main_region_cursor(wmWindow *win, ScrArea *sa, ARegion *ar)
1101 {
1102         if (WM_cursor_set_from_tool(win, sa, ar)) {
1103                 return;
1104         }
1105
1106         ViewLayer *view_layer = WM_window_get_active_view_layer(win);
1107         Object *obedit = OBEDIT_FROM_VIEW_LAYER(view_layer);
1108         if (obedit) {
1109                 WM_cursor_set(win, CURSOR_EDIT);
1110         }
1111         else {
1112                 WM_cursor_set(win, CURSOR_STD);
1113         }
1114 }
1115
1116 /* add handlers, stuff you only do once or on area/region changes */
1117 static void view3d_header_region_init(wmWindowManager *wm, ARegion *ar)
1118 {
1119         wmKeyMap *keymap = WM_keymap_ensure(wm->defaultconf, "3D View Generic", SPACE_VIEW3D, 0);
1120
1121         WM_event_add_keymap_handler(&ar->handlers, keymap);
1122
1123         ED_region_header_init(ar);
1124 }
1125
1126 static void view3d_header_region_draw(const bContext *C, ARegion *ar)
1127 {
1128         ED_region_header(C, ar);
1129 }
1130
1131 static void view3d_header_region_listener(
1132         wmWindow *UNUSED(win), ScrArea *UNUSED(sa), ARegion *ar,
1133         wmNotifier *wmn, const Scene *UNUSED(scene))
1134 {
1135         /* context changes */
1136         switch (wmn->category) {
1137                 case NC_SCENE:
1138                         switch (wmn->data) {
1139                                 case ND_FRAME:
1140                                 case ND_OB_ACTIVE:
1141                                 case ND_OB_SELECT:
1142                                 case ND_OB_VISIBLE:
1143                                 case ND_MODE:
1144                                 case ND_LAYER:
1145                                 case ND_TOOLSETTINGS:
1146                                 case ND_LAYER_CONTENT:
1147                                 case ND_RENDER_OPTIONS:
1148                                         ED_region_tag_redraw(ar);
1149                                         break;
1150                         }
1151                         break;
1152                 case NC_SPACE:
1153                         if (wmn->data == ND_SPACE_VIEW3D)
1154                                 ED_region_tag_redraw(ar);
1155                         break;
1156                 case NC_GPENCIL:
1157                         if (wmn->data & ND_GPENCIL_EDITMODE)
1158                                 ED_region_tag_redraw(ar);
1159                         break;
1160         }
1161 }
1162
1163 static void view3d_header_region_message_subscribe(
1164         const struct bContext *UNUSED(C),
1165         struct WorkSpace *UNUSED(workspace), struct Scene *UNUSED(scene),
1166         struct bScreen *UNUSED(screen), struct ScrArea *UNUSED(sa), struct ARegion *ar,
1167         struct wmMsgBus *mbus)
1168 {
1169         wmMsgParams_RNA msg_key_params = {{{0}}};
1170
1171         /* Only subscribe to types. */
1172         StructRNA *type_array[] = {
1173                 &RNA_View3DShading,
1174         };
1175
1176         wmMsgSubscribeValue msg_sub_value_region_tag_redraw = {
1177                 .owner = ar,
1178                 .user_data = ar,
1179                 .notify = ED_region_do_msg_notify_tag_redraw,
1180         };
1181
1182         for (int i = 0; i < ARRAY_SIZE(type_array); i++) {
1183                 msg_key_params.ptr.type = type_array[i];
1184                 WM_msg_subscribe_rna_params(
1185                         mbus,
1186                         &msg_key_params,
1187                         &msg_sub_value_region_tag_redraw,
1188                         __func__);
1189         }
1190 }
1191
1192
1193 /* add handlers, stuff you only do once or on area/region changes */
1194 static void view3d_buttons_region_init(wmWindowManager *wm, ARegion *ar)
1195 {
1196         wmKeyMap *keymap;
1197
1198         ED_region_panels_init(wm, ar);
1199
1200         keymap = WM_keymap_ensure(wm->defaultconf, "3D View Generic", SPACE_VIEW3D, 0);
1201         WM_event_add_keymap_handler(&ar->handlers, keymap);
1202 }
1203
1204 static void view3d_buttons_region_draw(const bContext *C, ARegion *ar)
1205 {
1206         ED_region_panels_ex(C, ar, (const char * []){CTX_data_mode_string(C), NULL}, -1, true);
1207 }
1208
1209 static void view3d_buttons_region_listener(
1210         wmWindow *UNUSED(win), ScrArea *UNUSED(sa), ARegion *ar,
1211         wmNotifier *wmn, const Scene *UNUSED(scene))
1212 {
1213         /* context changes */
1214         switch (wmn->category) {
1215                 case NC_ANIMATION:
1216                         switch (wmn->data) {
1217                                 case ND_KEYFRAME_PROP:
1218                                 case ND_NLA_ACTCHANGE:
1219                                         ED_region_tag_redraw(ar);
1220                                         break;
1221                                 case ND_NLA:
1222                                 case ND_KEYFRAME:
1223                                         if (ELEM(wmn->action, NA_EDITED, NA_ADDED, NA_REMOVED))
1224                                                 ED_region_tag_redraw(ar);
1225                                         break;
1226                         }
1227                         break;
1228                 case NC_SCENE:
1229                         switch (wmn->data) {
1230                                 case ND_FRAME:
1231                                 case ND_OB_ACTIVE:
1232                                 case ND_OB_SELECT:
1233                                 case ND_OB_VISIBLE:
1234                                 case ND_MODE:
1235                                 case ND_LAYER:
1236                                 case ND_LAYER_CONTENT:
1237                                 case ND_TOOLSETTINGS:
1238                                         ED_region_tag_redraw(ar);
1239                                         break;
1240                         }
1241                         switch (wmn->action) {
1242                                 case NA_EDITED:
1243                                         ED_region_tag_redraw(ar);
1244                                         break;
1245                         }
1246                         break;
1247                 case NC_OBJECT:
1248                         switch (wmn->data) {
1249                                 case ND_BONE_ACTIVE:
1250                                 case ND_BONE_SELECT:
1251                                 case ND_TRANSFORM:
1252                                 case ND_POSE:
1253                                 case ND_DRAW:
1254                                 case ND_KEYS:
1255                                 case ND_MODIFIER:
1256                                         ED_region_tag_redraw(ar);
1257                                         break;
1258                         }
1259                         break;
1260                 case NC_GEOM:
1261                         switch (wmn->data) {
1262                                 case ND_DATA:
1263                                 case ND_VERTEX_GROUP:
1264                                 case ND_SELECT:
1265                                         ED_region_tag_redraw(ar);
1266                                         break;
1267                         }
1268                         if (wmn->action == NA_EDITED)
1269                                 ED_region_tag_redraw(ar);
1270                         break;
1271                 case NC_TEXTURE:
1272                 case NC_MATERIAL:
1273                         /* for brush textures */
1274                         ED_region_tag_redraw(ar);
1275                         break;
1276                 case NC_BRUSH:
1277                         /* NA_SELECTED is used on brush changes */
1278                         if (ELEM(wmn->action, NA_EDITED, NA_SELECTED))
1279                                 ED_region_tag_redraw(ar);
1280                         break;
1281                 case NC_SPACE:
1282                         if (wmn->data == ND_SPACE_VIEW3D)
1283                                 ED_region_tag_redraw(ar);
1284                         break;
1285                 case NC_ID:
1286                         if (wmn->action == NA_RENAME)
1287                                 ED_region_tag_redraw(ar);
1288                         break;
1289                 case NC_GPENCIL:
1290                         if ((wmn->data & (ND_DATA | ND_GPENCIL_EDITMODE)) || (wmn->action == NA_EDITED))
1291                                 ED_region_tag_redraw(ar);
1292                         break;
1293                 case NC_IMAGE:
1294                         /* Update for the image layers in texture paint. */
1295                         if (wmn->action == NA_EDITED)
1296                                 ED_region_tag_redraw(ar);
1297                         break;
1298         }
1299 }
1300
1301 /* add handlers, stuff you only do once or on area/region changes */
1302 static void view3d_tools_region_init(wmWindowManager *wm, ARegion *ar)
1303 {
1304         wmKeyMap *keymap;
1305
1306         ED_region_panels_init(wm, ar);
1307
1308         keymap = WM_keymap_ensure(wm->defaultconf, "3D View Generic", SPACE_VIEW3D, 0);
1309         WM_event_add_keymap_handler(&ar->handlers, keymap);
1310 }
1311
1312 static void view3d_tools_region_draw(const bContext *C, ARegion *ar)
1313 {
1314         ED_region_panels_ex(C, ar, (const char * []){CTX_data_mode_string(C), NULL}, -1, true);
1315 }
1316
1317 /* area (not region) level listener */
1318 static void space_view3d_listener(
1319         wmWindow *UNUSED(win), ScrArea *sa, struct wmNotifier *wmn, Scene *UNUSED(scene))
1320 {
1321         View3D *v3d = sa->spacedata.first;
1322
1323         /* context changes */
1324         switch (wmn->category) {
1325                 case NC_SCENE:
1326                         switch (wmn->data) {
1327                                 case ND_WORLD:
1328                                         if (v3d->flag2 & V3D_RENDER_OVERRIDE)
1329                                                 ED_area_tag_redraw_regiontype(sa, RGN_TYPE_WINDOW);
1330                                         break;
1331                         }
1332                         break;
1333                 case NC_WORLD:
1334                         switch (wmn->data) {
1335                                 case ND_WORLD_DRAW:
1336                                 case ND_WORLD:
1337                                         if (v3d->shading.background_type == V3D_SHADING_BACKGROUND_WORLD) {
1338                                                 ED_area_tag_redraw_regiontype(sa, RGN_TYPE_WINDOW);
1339                                         }
1340                                         break;
1341                         }
1342                         break;
1343                 case NC_MATERIAL:
1344                         switch (wmn->data) {
1345                                 case ND_NODES:
1346                                         if (v3d->shading.type == OB_TEXTURE)
1347                                                 ED_area_tag_redraw_regiontype(sa, RGN_TYPE_WINDOW);
1348                                         break;
1349                         }
1350                         break;
1351         }
1352 }
1353
1354 static void space_view3d_refresh(const bContext *C, ScrArea *UNUSED(sa))
1355 {
1356         Scene *scene = CTX_data_scene(C);
1357         LightCache *lcache = scene->eevee.light_cache;
1358
1359         if (lcache && (lcache->flag & LIGHTCACHE_UPDATE_AUTO) != 0) {
1360                 lcache->flag &= ~LIGHTCACHE_UPDATE_AUTO;
1361                 view3d_lightcache_update((bContext *)C);
1362         }
1363 }
1364
1365 const char *view3d_context_dir[] = {
1366         "active_base", "active_object", NULL
1367 };
1368
1369 static int view3d_context(const bContext *C, const char *member, bContextDataResult *result)
1370 {
1371         /* fallback to the scene layer, allows duplicate and other object operators to run outside the 3d view */
1372
1373         if (CTX_data_dir(member)) {
1374                 CTX_data_dir_set(result, view3d_context_dir);
1375         }
1376         else if (CTX_data_equals(member, "active_base")) {
1377                 Scene *scene = CTX_data_scene(C);
1378                 ViewLayer *view_layer = CTX_data_view_layer(C);
1379                 if (view_layer->basact) {
1380                         Object *ob = view_layer->basact->object;
1381                         /* if hidden but in edit mode, we still display, can happen with animation */
1382                         if ((view_layer->basact->flag & BASE_VISIBLE) != 0 || (ob->mode & OB_MODE_EDIT)) {
1383                                 CTX_data_pointer_set(result, &scene->id, &RNA_ObjectBase, view_layer->basact);
1384                         }
1385                 }
1386
1387                 return 1;
1388         }
1389         else if (CTX_data_equals(member, "active_object")) {
1390                 ViewLayer *view_layer = CTX_data_view_layer(C);
1391                 if (view_layer->basact) {
1392                         Object *ob = view_layer->basact->object;
1393                         /* if hidden but in edit mode, we still display, can happen with animation */
1394                         if ((view_layer->basact->flag & BASE_VISIBLE) != 0 || (ob->mode & OB_MODE_EDIT) != 0) {
1395                                 CTX_data_id_pointer_set(result, &ob->id);
1396                         }
1397                 }
1398
1399                 return 1;
1400         }
1401         else {
1402                 return 0; /* not found */
1403         }
1404
1405         return -1; /* found but not available */
1406 }
1407
1408 static void view3d_id_remap(ScrArea *sa, SpaceLink *slink, ID *old_id, ID *new_id)
1409 {
1410         View3D *v3d;
1411         ARegion *ar;
1412         bool is_local = false;
1413
1414         if (!ELEM(GS(old_id->name), ID_OB, ID_MA, ID_IM, ID_MC)) {
1415                 return;
1416         }
1417
1418         for (v3d = (View3D *)slink; v3d; v3d = v3d->localvd, is_local = true) {
1419                 if ((ID *)v3d->camera == old_id) {
1420                         v3d->camera = (Object *)new_id;
1421                         if (!new_id) {
1422                                 /* 3D view might be inactive, in that case needs to use slink->regionbase */
1423                                 ListBase *regionbase = (slink == sa->spacedata.first) ? &sa->regionbase : &slink->regionbase;
1424                                 for (ar = regionbase->first; ar; ar = ar->next) {
1425                                         if (ar->regiontype == RGN_TYPE_WINDOW) {
1426                                                 RegionView3D *rv3d = is_local ? ((RegionView3D *)ar->regiondata)->localvd : ar->regiondata;
1427                                                 if (rv3d && (rv3d->persp == RV3D_CAMOB)) {
1428                                                         rv3d->persp = RV3D_PERSP;
1429                                                 }
1430                                         }
1431                                 }
1432                         }
1433                 }
1434
1435                 /* Values in local-view aren't used, see: T52663 */
1436                 if (is_local == false) {
1437                         if ((ID *)v3d->ob_centre == old_id) {
1438                                 v3d->ob_centre = (Object *)new_id;
1439                                 /* Otherwise, bonename may remain valid... We could be smart and check this, too? */
1440                                 if (new_id == NULL) {
1441                                         v3d->ob_centre_bone[0] = '\0';
1442                                 }
1443                         }
1444                 }
1445
1446                 if (is_local) {
1447                         break;
1448                 }
1449         }
1450 }
1451
1452 /* only called once, from space/spacetypes.c */
1453 void ED_spacetype_view3d(void)
1454 {
1455         SpaceType *st = MEM_callocN(sizeof(SpaceType), "spacetype view3d");
1456         ARegionType *art;
1457
1458         st->spaceid = SPACE_VIEW3D;
1459         strncpy(st->name, "View3D", BKE_ST_MAXNAME);
1460
1461         st->new = view3d_new;
1462         st->free = view3d_free;
1463         st->init = view3d_init;
1464         st->listener = space_view3d_listener;
1465         st->refresh = space_view3d_refresh;
1466         st->duplicate = view3d_duplicate;
1467         st->operatortypes = view3d_operatortypes;
1468         st->keymap = view3d_keymap;
1469         st->dropboxes = view3d_dropboxes;
1470         st->gizmos = view3d_widgets;
1471         st->context = view3d_context;
1472         st->id_remap = view3d_id_remap;
1473
1474         /* regions: main window */
1475         art = MEM_callocN(sizeof(ARegionType), "spacetype view3d main region");
1476         art->regionid = RGN_TYPE_WINDOW;
1477         art->keymapflag = ED_KEYMAP_GIZMO | ED_KEYMAP_GPENCIL;
1478         art->draw = view3d_main_region_draw;
1479         art->init = view3d_main_region_init;
1480         art->exit = view3d_main_region_exit;
1481         art->free = view3d_main_region_free;
1482         art->duplicate = view3d_main_region_duplicate;
1483         art->listener = view3d_main_region_listener;
1484         art->message_subscribe = view3d_main_region_message_subscribe;
1485         art->cursor = view3d_main_region_cursor;
1486         art->lock = 1;   /* can become flag, see BKE_spacedata_draw_locks */
1487         BLI_addhead(&st->regiontypes, art);
1488
1489         /* regions: listview/buttons */
1490         art = MEM_callocN(sizeof(ARegionType), "spacetype view3d buttons region");
1491         art->regionid = RGN_TYPE_UI;
1492         art->prefsizex = 180; /* XXX */
1493         art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_FRAMES;
1494         art->listener = view3d_buttons_region_listener;
1495         art->init = view3d_buttons_region_init;
1496         art->draw = view3d_buttons_region_draw;
1497         BLI_addhead(&st->regiontypes, art);
1498
1499         view3d_buttons_register(art);
1500
1501         /* regions: tool(bar) */
1502         art = MEM_callocN(sizeof(ARegionType), "spacetype view3d tools region");
1503         art->regionid = RGN_TYPE_TOOLS;
1504         art->prefsizex = 58; /* XXX */
1505         art->prefsizey = 50; /* XXX */
1506         art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_FRAMES;
1507         art->listener = view3d_buttons_region_listener;
1508         art->message_subscribe = ED_region_generic_tools_region_message_subscribe;
1509         art->snap_size = ED_region_generic_tools_region_snap_size;
1510         art->init = view3d_tools_region_init;
1511         art->draw = view3d_tools_region_draw;
1512         BLI_addhead(&st->regiontypes, art);
1513
1514         /* regions: header */
1515         art = MEM_callocN(sizeof(ARegionType), "spacetype view3d header region");
1516         art->regionid = RGN_TYPE_HEADER;
1517         art->prefsizey = HEADERY;
1518         art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_VIEW2D | ED_KEYMAP_FRAMES | ED_KEYMAP_HEADER;
1519         art->listener = view3d_header_region_listener;
1520         art->init = view3d_header_region_init;
1521         art->draw = view3d_header_region_draw;
1522         art->message_subscribe = view3d_header_region_message_subscribe;
1523         BLI_addhead(&st->regiontypes, art);
1524
1525         /* regions: hud */
1526         art = ED_area_type_hud(st->spaceid);
1527         BLI_addhead(&st->regiontypes, art);
1528
1529         BKE_spacetype_register(st);
1530 }