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test2/source/blender/editors/space_node/space_node.cc
Habib Gahbiche e7a220e056 Fix #146724: Crash when deleting node group from outliner 
An update to set the right context was missing after the current
`edittree` was updated.

Pull Request: https://projects.blender.org/blender/blender/pulls/147828
2025-10-13 12:00:32 +02:00

1900 lines
60 KiB
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/* SPDX-FileCopyrightText: 2008 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup spnode
*/
#include "AS_asset_representation.hh"
#include "BKE_node_socket_value.hh"
#include "BLI_listbase.h"
#include "BLI_math_vector.h"
#include "BLI_stack.hh"
#include "BLI_string.h"
#include "BLI_string_utf8.h"
#include "DNA_ID.h"
#include "DNA_gpencil_legacy_types.h"
#include "DNA_material_types.h"
#include "DNA_modifier_types.h"
#include "DNA_node_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "DNA_space_types.h"
#include "DNA_windowmanager_types.h"
#include "MEM_guardedalloc.h"
#include "BKE_asset.hh"
#include "BKE_compute_context_cache.hh"
#include "BKE_compute_contexts.hh"
#include "BKE_context.hh"
#include "BKE_gpencil_legacy.h"
#include "BKE_idprop.hh"
#include "BKE_lib_id.hh"
#include "BKE_lib_query.hh"
#include "BKE_lib_remap.hh"
#include "BKE_node_legacy_types.hh"
#include "BKE_node_runtime.hh"
#include "BKE_node_tree_zones.hh"
#include "BKE_screen.hh"
#include "BLT_translation.hh"
#include "ED_asset_shelf.hh"
#include "ED_image.hh"
#include "ED_node.hh"
#include "ED_node_preview.hh"
#include "ED_screen.hh"
#include "ED_space_api.hh"
#include "UI_view2d.hh"
#include "DEG_depsgraph.hh"
#include "DEG_depsgraph_query.hh"
#include "BLO_read_write.hh"
#include "RNA_access.hh"
#include "RNA_define.hh"
#include "RNA_enum_types.hh"
#include "RNA_prototypes.hh"
#include "WM_api.hh"
#include "WM_types.hh"
#include "NOD_trace_values.hh"
#include "io_utils.hh"
#include "node_intern.hh" /* own include */
using blender::float2;
/* ******************** tree path ********************* */
void ED_node_tree_start(ARegion *region, SpaceNode *snode, bNodeTree *ntree, ID *id, ID *from)
{
LISTBASE_FOREACH_MUTABLE (bNodeTreePath *, path, &snode->treepath) {
MEM_freeN(path);
}
BLI_listbase_clear(&snode->treepath);
if (ntree) {
bNodeTreePath *path = MEM_callocN<bNodeTreePath>("node tree path");
path->nodetree = ntree;
path->parent_key = blender::bke::NODE_INSTANCE_KEY_BASE;
/* Set initial view center from node tree. */
copy_v2_v2(path->view_center, ntree->view_center);
if (region) {
UI_view2d_center_set(&region->v2d, ntree->view_center[0], ntree->view_center[1]);
}
if (id) {
STRNCPY_UTF8(path->display_name, id->name + 2);
}
BLI_addtail(&snode->treepath, path);
if (ntree->type != NTREE_GEOMETRY) {
/* This can probably be removed for all node tree types. It mainly exists because it was not
* possible to store id references in custom properties. Also see #36024. I don't want to
* remove it for all tree types in bcon3 though. */
id_us_ensure_real(&ntree->id);
}
}
/* update current tree */
snode->nodetree = snode->edittree = ntree;
snode->id = id;
snode->from = from;
ED_node_set_active_viewer_key(snode);
snode->runtime->node_can_sync_states.clear();
WM_main_add_notifier(NC_SCENE | ND_NODES, nullptr);
}
void ED_node_tree_push(ARegion *region, SpaceNode *snode, bNodeTree *ntree, bNode *gnode)
{
bNodeTreePath *path = MEM_callocN<bNodeTreePath>("node tree path");
bNodeTreePath *prev_path = (bNodeTreePath *)snode->treepath.last;
path->nodetree = ntree;
if (gnode) {
if (prev_path) {
path->parent_key = blender::bke::node_instance_key(
prev_path->parent_key, prev_path->nodetree, gnode);
}
else {
path->parent_key = blender::bke::NODE_INSTANCE_KEY_BASE;
}
STRNCPY_UTF8(path->node_name, gnode->name);
STRNCPY_UTF8(path->display_name, gnode->name);
}
else {
path->parent_key = blender::bke::NODE_INSTANCE_KEY_BASE;
}
/* Set initial view center from node tree. */
copy_v2_v2(path->view_center, ntree->view_center);
if (region) {
UI_view2d_center_set(&region->v2d, ntree->view_center[0], ntree->view_center[1]);
}
BLI_addtail(&snode->treepath, path);
id_us_ensure_real(&ntree->id);
/* update current tree */
snode->edittree = ntree;
ED_node_set_active_viewer_key(snode);
snode->runtime->node_can_sync_states.clear();
WM_main_add_notifier(NC_SCENE | ND_NODES, nullptr);
}
void ED_node_tree_pop(ARegion *region, SpaceNode *snode)
{
bNodeTreePath *path = (bNodeTreePath *)snode->treepath.last;
/* don't remove root */
if (path == snode->treepath.first) {
return;
}
BLI_remlink(&snode->treepath, path);
MEM_freeN(path);
/* update current tree */
path = (bNodeTreePath *)snode->treepath.last;
snode->edittree = path->nodetree;
/* Set view center from node tree path. */
if (region) {
UI_view2d_center_set(&region->v2d, path->view_center[0], path->view_center[1]);
}
ED_node_set_active_viewer_key(snode);
snode->runtime->node_can_sync_states.clear();
WM_main_add_notifier(NC_SCENE | ND_NODES, nullptr);
}
int ED_node_tree_depth(SpaceNode *snode)
{
return BLI_listbase_count(&snode->treepath);
}
bNodeTree *ED_node_tree_get(SpaceNode *snode, int level)
{
bNodeTreePath *path;
int i;
for (path = (bNodeTreePath *)snode->treepath.last, i = 0; path; path = path->prev, i++) {
if (i == level) {
return path->nodetree;
}
}
return nullptr;
}
int ED_node_tree_path_length(SpaceNode *snode)
{
int length = 0;
int i = 0;
LISTBASE_FOREACH_INDEX (bNodeTreePath *, path, &snode->treepath, i) {
length += strlen(path->display_name);
if (i > 0) {
length += 1; /* for separator char */
}
}
return length;
}
void ED_node_tree_path_get(SpaceNode *snode, char *value)
{
int i = 0;
#ifndef NDEBUG
const char *value_orig = value;
#endif
/* Note that the caller ensures there is enough space available. */
LISTBASE_FOREACH_INDEX (bNodeTreePath *, path, &snode->treepath, i) {
const int len = strlen(path->display_name);
if (i != 0) {
*value++ = '/';
}
memcpy(value, path->display_name, len);
value += len;
}
*value = '\0';
BLI_assert(ptrdiff_t(ED_node_tree_path_length(snode)) == ptrdiff_t(value - value_orig));
}
void ED_node_set_active_viewer_key(SpaceNode *snode)
{
bNodeTreePath *path = (bNodeTreePath *)snode->treepath.last;
if (snode->nodetree && path) {
/* A change in active viewer may result in the change of the output node used by the
* compositor, so we need to get notified about such changes. */
if (snode->nodetree->active_viewer_key.value != path->parent_key.value &&
snode->nodetree->type == NTREE_COMPOSIT)
{
DEG_id_tag_update(&snode->nodetree->id, ID_RECALC_NTREE_OUTPUT);
WM_main_add_notifier(NC_NODE, nullptr);
}
snode->nodetree->active_viewer_key = path->parent_key;
}
}
void ED_node_cursor_location_get(const SpaceNode *snode, float value[2])
{
copy_v2_v2(value, snode->runtime->cursor);
}
void ED_node_cursor_location_set(SpaceNode *snode, const float value[2])
{
copy_v2_v2(snode->runtime->cursor, value);
}
namespace blender::ed::space_node {
float2 space_node_group_offset(const SpaceNode &snode)
{
const bNodeTreePath *path = (bNodeTreePath *)snode.treepath.last;
if (path && path->prev) {
return float2(path->view_center) - float2(path->prev->view_center);
}
return float2(0);
}
std::optional<nodes::FoundNestedNodeID> find_nested_node_id_in_root(const SpaceNode &snode,
const bNode &query_node)
{
BLI_assert(snode.edittree->runtime->nodes_by_id.contains(const_cast<bNode *>(&query_node)));
bke::ComputeContextCache compute_context_cache;
const ComputeContext *compute_context = compute_context_for_edittree_node(
snode, compute_context_cache, query_node);
if (!compute_context) {
return {};
}
return find_nested_node_id_in_root(*snode.nodetree, compute_context, query_node.identifier);
}
std::optional<nodes::FoundNestedNodeID> find_nested_node_id_in_root(
const bNodeTree &root_tree, const ComputeContext *compute_context, const int node_id)
{
nodes::FoundNestedNodeID found;
Vector<int> node_ids;
for (const ComputeContext *context = compute_context; context != nullptr;
context = context->parent())
{
if (const auto *node_context = dynamic_cast<const bke::GroupNodeComputeContext *>(context)) {
node_ids.append(node_context->node_id());
}
else if (dynamic_cast<const bke::RepeatZoneComputeContext *>(context) != nullptr) {
found.is_in_loop = true;
}
else if (dynamic_cast<const bke::SimulationZoneComputeContext *>(context) != nullptr) {
found.is_in_simulation = true;
}
else if (dynamic_cast<const bke::ForeachGeometryElementZoneComputeContext *>(context) !=
nullptr)
{
found.is_in_loop = true;
}
else if (dynamic_cast<const bke::EvaluateClosureComputeContext *>(context) != nullptr) {
found.is_in_closure = true;
}
}
std::reverse(node_ids.begin(), node_ids.end());
node_ids.append(node_id);
const bNestedNodeRef *nested_node_ref = root_tree.nested_node_ref_from_node_id_path(node_ids);
if (nested_node_ref == nullptr) {
return std::nullopt;
}
found.id = nested_node_ref->id;
return found;
}
std::optional<ObjectAndModifier> get_modifier_for_node_editor(const SpaceNode &snode)
{
if (snode.node_tree_sub_type != SNODE_GEOMETRY_MODIFIER) {
return std::nullopt;
}
if (snode.id == nullptr) {
return std::nullopt;
}
if (GS(snode.id->name) != ID_OB) {
return std::nullopt;
}
const Object *object = reinterpret_cast<Object *>(snode.id);
const NodesModifierData *used_modifier = nullptr;
if (snode.flag & SNODE_PIN) {
LISTBASE_FOREACH (const ModifierData *, md, &object->modifiers) {
if (md->type == eModifierType_Nodes) {
const NodesModifierData *nmd = reinterpret_cast<const NodesModifierData *>(md);
/* Would be good to store the name of the pinned modifier in the node editor. */
if (nmd->node_group == snode.nodetree) {
used_modifier = nmd;
break;
}
}
}
}
else {
LISTBASE_FOREACH (const ModifierData *, md, &object->modifiers) {
if (md->type == eModifierType_Nodes) {
const NodesModifierData *nmd = reinterpret_cast<const NodesModifierData *>(md);
if (nmd->node_group == snode.nodetree) {
if (md->flag & eModifierFlag_Active) {
used_modifier = nmd;
break;
}
}
}
}
}
if (used_modifier == nullptr) {
return std::nullopt;
}
return ObjectAndModifier{object, used_modifier};
}
bool node_editor_is_for_geometry_nodes_modifier(const SpaceNode &snode,
const Object &object,
const NodesModifierData &nmd)
{
const std::optional<ObjectAndModifier> object_and_modifier = get_modifier_for_node_editor(snode);
if (!object_and_modifier) {
return false;
}
const Object *object_orig = DEG_is_original(&object) ? &object : DEG_get_original(&object);
if (object_and_modifier->object != object_orig) {
return false;
}
return object_and_modifier->nmd->modifier.persistent_uid == nmd.modifier.persistent_uid;
}
const ComputeContext *compute_context_for_zone(const bke::bNodeTreeZone &zone,
bke::ComputeContextCache &compute_context_cache,
const ComputeContext *parent_compute_context)
{
const bNode *output_node_ptr = zone.output_node();
if (!output_node_ptr) {
return nullptr;
}
const bNode &output_node = *output_node_ptr;
switch (output_node.type_legacy) {
case GEO_NODE_SIMULATION_OUTPUT: {
return &compute_context_cache.for_simulation_zone(parent_compute_context, output_node);
}
case GEO_NODE_REPEAT_OUTPUT: {
const auto &storage = *static_cast<const NodeGeometryRepeatOutput *>(output_node.storage);
return &compute_context_cache.for_repeat_zone(
parent_compute_context, output_node, storage.inspection_index);
}
case GEO_NODE_FOREACH_GEOMETRY_ELEMENT_OUTPUT: {
const auto &storage = *static_cast<const NodeGeometryForeachGeometryElementOutput *>(
output_node.storage);
return &compute_context_cache.for_foreach_geometry_element_zone(
parent_compute_context, output_node, storage.inspection_index);
}
case NODE_CLOSURE_OUTPUT: {
nodes::ClosureSourceLocation source_location{};
const bNodeTree &tree = output_node.owner_tree();
source_location.tree = &tree;
source_location.closure_output_node_id = output_node.identifier;
source_location.compute_context_hash = parent_compute_context ?
parent_compute_context->hash() :
ComputeContextHash{};
source_location.compute_context = parent_compute_context;
return compute_context_for_closure_evaluation(parent_compute_context,
output_node.output_socket(0),
compute_context_cache,
source_location);
}
}
return nullptr;
}
const ComputeContext *compute_context_for_zones(const Span<const bke::bNodeTreeZone *> zones,
bke::ComputeContextCache &compute_context_cache,
const ComputeContext *parent_compute_context)
{
const ComputeContext *current = parent_compute_context;
for (const bke::bNodeTreeZone *zone : zones) {
current = compute_context_for_zone(*zone, compute_context_cache, current);
if (!current) {
return nullptr;
}
}
return current;
}
static std::optional<const ComputeContext *> compute_context_for_tree_path(
const SpaceNode &snode,
bke::ComputeContextCache &compute_context_cache,
const ComputeContext *parent_compute_context)
{
const ComputeContext *current = parent_compute_context;
Vector<const bNodeTreePath *> tree_path;
LISTBASE_FOREACH (const bNodeTreePath *, item, &snode.treepath) {
tree_path.append(item);
}
if (tree_path.is_empty()) {
return current;
}
for (const int i : tree_path.index_range().drop_back(1)) {
bNodeTree *tree = tree_path[i]->nodetree;
const char *group_node_name = tree_path[i + 1]->node_name;
const bNode *group_node = blender::bke::node_find_node_by_name(*tree, group_node_name);
if (group_node == nullptr) {
return std::nullopt;
}
const blender::bke::bNodeTreeZones *tree_zones = tree->zones();
if (tree_zones == nullptr) {
return std::nullopt;
}
const Vector<const blender::bke::bNodeTreeZone *> zone_stack =
tree_zones->get_zones_to_enter_from_root(
tree_zones->get_zone_by_node(group_node->identifier));
current = compute_context_for_zones(zone_stack, compute_context_cache, current);
if (!current) {
return std::nullopt;
}
current = &compute_context_cache.for_group_node(current, group_node->identifier, tree);
}
return current;
}
static const ComputeContext *get_node_editor_root_compute_context(
const SpaceNode &snode, bke::ComputeContextCache &compute_context_cache)
{
if (snode.nodetree->type == NTREE_GEOMETRY) {
switch (SpaceNodeGeometryNodesType(snode.node_tree_sub_type)) {
case SNODE_GEOMETRY_MODIFIER: {
std::optional<ed::space_node::ObjectAndModifier> object_and_modifier =
ed::space_node::get_modifier_for_node_editor(snode);
if (!object_and_modifier) {
return nullptr;
}
return &compute_context_cache.for_modifier(nullptr, *object_and_modifier->nmd);
}
case SNODE_GEOMETRY_TOOL: {
return &compute_context_cache.for_operator(nullptr);
}
}
return nullptr;
}
if (snode.nodetree->type == NTREE_SHADER) {
return &compute_context_cache.for_shader(nullptr, snode.nodetree);
}
return nullptr;
}
[[nodiscard]] const ComputeContext *compute_context_for_edittree(
const SpaceNode &snode, bke::ComputeContextCache &compute_context_cache)
{
if (!snode.edittree) {
return nullptr;
}
if (!ELEM(snode.edittree->type, NTREE_GEOMETRY, NTREE_SHADER)) {
return nullptr;
}
const ComputeContext *root_context = get_node_editor_root_compute_context(snode,
compute_context_cache);
if (!root_context) {
return nullptr;
}
const ComputeContext *edittree_context =
compute_context_for_tree_path(snode, compute_context_cache, root_context).value_or(nullptr);
return edittree_context;
}
const ComputeContext *compute_context_for_edittree_socket(
const SpaceNode &snode,
bke::ComputeContextCache &compute_context_cache,
const bNodeSocket &socket)
{
const ComputeContext *context = compute_context_for_edittree(snode, compute_context_cache);
if (!context) {
return nullptr;
}
const bke::bNodeTreeZones *zones = snode.edittree->zones();
if (!zones) {
return nullptr;
}
const bke::bNodeTreeZone *zone = zones->get_zone_by_socket(socket);
const Vector<const bke::bNodeTreeZone *> zone_stack = zones->get_zones_to_enter_from_root(zone);
return compute_context_for_zones(zone_stack, compute_context_cache, context);
}
const ComputeContext *compute_context_for_edittree_node(
const SpaceNode &snode, bke::ComputeContextCache &compute_context_cache, const bNode &node)
{
const ComputeContext *context = compute_context_for_edittree(snode, compute_context_cache);
if (!context) {
return nullptr;
}
const bke::bNodeTreeZones *zones = snode.edittree->zones();
if (!zones) {
return nullptr;
}
const bke::bNodeTreeZone *zone = zones->get_zone_by_node(node.identifier);
const Vector<const bke::bNodeTreeZone *> zone_stack = zones->get_zones_to_enter_from_root(zone);
return compute_context_for_zones(zone_stack, compute_context_cache, context);
}
/* ******************** default callbacks for node space ***************** */
static SpaceLink *node_create(const ScrArea * /*area*/, const Scene * /*scene*/)
{
SpaceNode *snode = MEM_callocN<SpaceNode>(__func__);
snode->spacetype = SPACE_NODE;
snode->flag = SNODE_SHOW_GPENCIL | SNODE_USE_ALPHA;
snode->overlay.flag = (SN_OVERLAY_SHOW_OVERLAYS | SN_OVERLAY_SHOW_WIRE_COLORS |
SN_OVERLAY_SHOW_PATH | SN_OVERLAY_SHOW_PREVIEWS);
/* backdrop */
snode->zoom = 1.0f;
/* select the first tree type for valid type */
for (const bke::bNodeTreeType *treetype : bke::node_tree_types_get()) {
STRNCPY_UTF8(snode->tree_idname, treetype->idname.c_str());
break;
}
/* header */
ARegion *region = BKE_area_region_new();
BLI_addtail(&snode->regionbase, region);
region->regiontype = RGN_TYPE_HEADER;
region->alignment = (U.uiflag & USER_HEADER_BOTTOM) ? RGN_ALIGN_BOTTOM : RGN_ALIGN_TOP;
/* asset shelf */
region = BKE_area_region_new();
BLI_addtail(&snode->regionbase, region);
region->regiontype = RGN_TYPE_ASSET_SHELF;
region->alignment = RGN_ALIGN_BOTTOM;
region->flag |= RGN_FLAG_HIDDEN;
/* asset shelf header */
region = BKE_area_region_new();
BLI_addtail(&snode->regionbase, region);
region->regiontype = RGN_TYPE_ASSET_SHELF_HEADER;
region->alignment = RGN_ALIGN_BOTTOM | RGN_ALIGN_HIDE_WITH_PREV;
/* buttons/list view */
region = BKE_area_region_new();
BLI_addtail(&snode->regionbase, region);
region->regiontype = RGN_TYPE_UI;
region->alignment = RGN_ALIGN_RIGHT;
/* toolbar */
region = BKE_area_region_new();
BLI_addtail(&snode->regionbase, region);
region->regiontype = RGN_TYPE_TOOLS;
region->alignment = RGN_ALIGN_LEFT;
region->flag = RGN_FLAG_HIDDEN;
/* main region */
region = BKE_area_region_new();
BLI_addtail(&snode->regionbase, region);
region->regiontype = RGN_TYPE_WINDOW;
region->v2d.tot.xmin = -12.8f * U.widget_unit;
region->v2d.tot.ymin = -12.8f * U.widget_unit;
region->v2d.tot.xmax = 38.4f * U.widget_unit;
region->v2d.tot.ymax = 38.4f * U.widget_unit;
region->v2d.cur = region->v2d.tot;
region->v2d.min[0] = 1.0f;
region->v2d.min[1] = 1.0f;
region->v2d.max[0] = 32000.0f;
region->v2d.max[1] = 32000.0f;
region->v2d.minzoom = 0.05f;
region->v2d.maxzoom = 2.31f;
region->v2d.scroll = (V2D_SCROLL_RIGHT | V2D_SCROLL_BOTTOM);
region->v2d.keepzoom = V2D_LIMITZOOM | V2D_KEEPASPECT;
region->v2d.keeptot = 0;
return (SpaceLink *)snode;
}
static void node_free(SpaceLink *sl)
{
SpaceNode *snode = (SpaceNode *)sl;
BLI_freelistN(&snode->treepath);
MEM_delete(snode->runtime);
}
/* spacetype; init callback */
static void node_init(wmWindowManager * /*wm*/, ScrArea *area)
{
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
if (snode->runtime == nullptr) {
snode->runtime = MEM_new<SpaceNode_Runtime>(__func__);
}
}
static void node_exit(wmWindowManager *wm, ScrArea *area)
{
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
if (snode->runtime) {
free_previews(*wm, *snode);
}
}
static bool any_node_uses_id(const bNodeTree *ntree, const ID *id)
{
if (ELEM(nullptr, ntree, id)) {
return false;
}
for (const bNode *node : ntree->all_nodes()) {
if (node->id == id) {
return true;
}
}
return false;
}
/**
* Tag the space to recalculate the current tree.
*
* For all node trees this will do `snode_set_context()` which takes care of setting an active
* tree. This will be done in the area refresh callback.
*
* For compositor tree this will additionally start of the compositor job.
*/
static void node_area_tag_tree_recalc(SpaceNode *snode, ScrArea *area)
{
if (ED_node_is_compositor(snode)) {
snode->runtime->recalc_regular_compositing = true;
}
ED_area_tag_refresh(area);
}
static void node_area_listener(const wmSpaceTypeListenerParams *params)
{
ScrArea *area = params->area;
const wmNotifier *wmn = params->notifier;
/* NOTE: #ED_area_tag_refresh will re-execute compositor. */
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
/* shaderfrom is only used for new shading nodes, otherwise all shaders are from objects */
short shader_type = snode->shaderfrom;
/* preview renders */
switch (wmn->category) {
case NC_SCENE:
switch (wmn->data) {
case ND_NODES: {
node_area_tag_tree_recalc(snode, area);
break;
}
case ND_FRAME:
node_area_tag_tree_recalc(snode, area);
break;
case ND_COMPO_RESULT: {
ED_area_tag_redraw(area);
/* Backdrop image offset is calculated during compositing so gizmos need to be updated
* afterwards. */
const ARegion *region = BKE_area_find_region_type(area, RGN_TYPE_WINDOW);
WM_gizmomap_tag_refresh(region->runtime->gizmo_map);
break;
}
}
break;
/* future: add ID checks? */
case NC_MATERIAL:
if (ED_node_is_shader(snode)) {
if (wmn->data == ND_SHADING) {
node_area_tag_tree_recalc(snode, area);
}
else if (wmn->data == ND_SHADING_DRAW) {
node_area_tag_tree_recalc(snode, area);
}
else if (wmn->data == ND_SHADING_LINKS) {
node_area_tag_tree_recalc(snode, area);
}
}
break;
case NC_TEXTURE:
if (ED_node_is_shader(snode) || ED_node_is_texture(snode)) {
if (wmn->data == ND_NODES) {
node_area_tag_tree_recalc(snode, area);
}
}
break;
case NC_WORLD:
if (ED_node_is_shader(snode) && shader_type == SNODE_SHADER_WORLD) {
node_area_tag_tree_recalc(snode, area);
}
break;
case NC_OBJECT:
if (ED_node_is_shader(snode)) {
if (wmn->data == ND_OB_SHADING) {
node_area_tag_tree_recalc(snode, area);
}
}
else if (ED_node_is_geometry(snode)) {
if (wmn->data == ND_MODIFIER) {
/* Rather strict check: only redraw when the reference matches current editor's ID, */
if (wmn->reference == snode->id || snode->id == nullptr) {
node_area_tag_tree_recalc(snode, area);
}
/* Redraw context path or modifier dependent information. */
ED_area_tag_redraw(area);
}
}
break;
case NC_SPACE:
if (wmn->data == ND_SPACE_NODE) {
node_area_tag_tree_recalc(snode, area);
}
else if (wmn->data == ND_SPACE_NODE_VIEW) {
ED_area_tag_redraw(area);
}
break;
case NC_NODE:
if (wmn->action == NA_EDITED) {
if (ELEM(wmn->reference, snode->nodetree, snode->id, nullptr) || snode->id == nullptr) {
node_area_tag_tree_recalc(snode, area);
}
}
else if (wmn->action == NA_SELECTED) {
ED_area_tag_redraw(area);
}
break;
case NC_SCREEN:
switch (wmn->data) {
case ND_ANIMPLAY:
node_area_tag_tree_recalc(snode, area);
break;
}
break;
case NC_MASK:
if (wmn->action == NA_EDITED) {
if (snode->nodetree && snode->nodetree->type == NTREE_COMPOSIT) {
node_area_tag_tree_recalc(snode, area);
}
}
break;
case NC_IMAGE:
if (wmn->action == NA_EDITED) {
if (ED_node_is_compositor(snode)) {
/* Without this check drawing on an image could become very slow when the compositor is
* open. */
if (any_node_uses_id(snode->nodetree, (ID *)wmn->reference)) {
node_area_tag_tree_recalc(snode, area);
}
}
}
break;
case NC_MOVIECLIP:
if (wmn->action == NA_EDITED) {
if (ED_node_is_compositor(snode)) {
if (any_node_uses_id(snode->nodetree, (ID *)wmn->reference)) {
node_area_tag_tree_recalc(snode, area);
}
}
}
break;
case NC_LINESTYLE:
if (ED_node_is_shader(snode) && shader_type == SNODE_SHADER_LINESTYLE) {
node_area_tag_tree_recalc(snode, area);
}
break;
case NC_WM:
if (wmn->data == ND_UNDO) {
node_area_tag_tree_recalc(snode, area);
}
break;
case NC_GPENCIL:
if (ELEM(wmn->action, NA_EDITED, NA_SELECTED)) {
ED_area_tag_redraw(area);
}
break;
}
}
static void node_area_refresh(const bContext *C, ScrArea *area)
{
/* default now: refresh node is starting preview */
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
snode_set_context(*C);
if (snode->nodetree) {
if (snode->nodetree->type == NTREE_COMPOSIT) {
Scene *scene = (Scene *)snode->id;
if (snode->runtime->recalc_regular_compositing) {
snode->runtime->recalc_regular_compositing = false;
ED_node_composite_job(C, snode->nodetree, scene);
}
}
}
}
static SpaceLink *node_duplicate(SpaceLink *sl)
{
SpaceNode *snode = (SpaceNode *)sl;
SpaceNode *snoden = (SpaceNode *)MEM_dupallocN(snode);
BLI_duplicatelist(&snoden->treepath, &snode->treepath);
snoden->runtime = MEM_new<SpaceNode_Runtime>(__func__);
/* NOTE: no need to set node tree user counts,
* the editor only keeps at least 1 (id_us_ensure_real),
* which is already done by the original SpaceNode.
*/
return (SpaceLink *)snoden;
}
/* add handlers, stuff you only do once or on area/region changes */
static void node_buttons_region_init(wmWindowManager *wm, ARegion *region)
{
wmKeyMap *keymap;
ED_region_panels_init(wm, region);
keymap = WM_keymap_ensure(wm->runtime->defaultconf, "Node Generic", SPACE_NODE, RGN_TYPE_WINDOW);
WM_event_add_keymap_handler(&region->runtime->handlers, keymap);
}
static void node_buttons_region_draw(const bContext *C, ARegion *region)
{
ED_region_panels(C, region);
}
/* add handlers, stuff you only do once or on area/region changes */
static void node_toolbar_region_init(wmWindowManager *wm, ARegion *region)
{
wmKeyMap *keymap;
ED_region_panels_init(wm, region);
keymap = WM_keymap_ensure(wm->runtime->defaultconf, "Node Generic", SPACE_NODE, RGN_TYPE_WINDOW);
WM_event_add_keymap_handler(&region->runtime->handlers, keymap);
}
static void node_toolbar_region_draw(const bContext *C, ARegion *region)
{
ED_region_panels(C, region);
}
static void node_cursor(wmWindow *win, ScrArea *area, ARegion *region)
{
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
/* convert mouse coordinates to v2d space */
UI_view2d_region_to_view(&region->v2d,
win->eventstate->xy[0] - region->winrct.xmin,
win->eventstate->xy[1] - region->winrct.ymin,
&snode->runtime->cursor[0],
&snode->runtime->cursor[1]);
/* here snode->runtime->cursor is used to detect the node edge for sizing */
node_set_cursor(*win, *region, *snode, snode->runtime->cursor);
/* XXX snode->runtime->cursor is in placing new nodes space */
snode->runtime->cursor[0] /= UI_SCALE_FAC;
snode->runtime->cursor[1] /= UI_SCALE_FAC;
}
/* Initialize main region, setting handlers. */
static void node_main_region_init(wmWindowManager *wm, ARegion *region)
{
wmKeyMap *keymap;
ListBase *lb;
UI_view2d_region_reinit(&region->v2d, V2D_COMMONVIEW_CUSTOM, region->winx, region->winy);
/* own keymaps */
keymap = WM_keymap_ensure(wm->runtime->defaultconf, "Node Generic", SPACE_NODE, RGN_TYPE_WINDOW);
WM_event_add_keymap_handler(&region->runtime->handlers, keymap);
keymap = WM_keymap_ensure(wm->runtime->defaultconf, "Node Editor", SPACE_NODE, RGN_TYPE_WINDOW);
WM_event_add_keymap_handler_v2d_mask(&region->runtime->handlers, keymap);
/* add drop boxes */
lb = WM_dropboxmap_find("Node Editor", SPACE_NODE, RGN_TYPE_WINDOW);
WM_event_add_dropbox_handler(&region->runtime->handlers, lb);
/* The backdrop image gizmo needs to change together with the view. So always refresh gizmos on
* region size changes. */
WM_gizmomap_tag_refresh(region->runtime->gizmo_map);
}
static void node_main_region_draw(const bContext *C, ARegion *region)
{
node_draw_space(*C, *region);
}
/* ************* dropboxes ************* */
static bool node_group_drop_poll(bContext *C, wmDrag *drag, const wmEvent * /*event*/)
{
SpaceNode *snode = CTX_wm_space_node(C);
if (snode == nullptr) {
return false;
}
if (snode->edittree == nullptr) {
return false;
}
if (!WM_drag_is_ID_type(drag, ID_NT)) {
return false;
}
if (drag->type == WM_DRAG_ID) {
const bNodeTree *node_tree = reinterpret_cast<const bNodeTree *>(
WM_drag_get_local_ID(drag, ID_NT));
if (!node_tree) {
return false;
}
return node_tree->type == snode->edittree->type;
}
if (drag->type == WM_DRAG_ASSET) {
const wmDragAsset *asset_data = WM_drag_get_asset_data(drag, ID_NT);
if (!asset_data) {
return false;
}
const AssetMetaData *metadata = &asset_data->asset->get_metadata();
const IDProperty *tree_type = BKE_asset_metadata_idprop_find(metadata, "type");
if (!tree_type || IDP_int_get(tree_type) != snode->edittree->type) {
return false;
}
}
return true;
}
static bool node_object_drop_poll(bContext *C, wmDrag *drag, const wmEvent * /*event*/)
{
return WM_drag_is_ID_type(drag, ID_OB) && !UI_but_active_drop_name(C);
}
static bool node_collection_drop_poll(bContext *C, wmDrag *drag, const wmEvent * /*event*/)
{
return WM_drag_is_ID_type(drag, ID_GR) && !UI_but_active_drop_name(C);
}
static bool node_id_im_drop_poll(bContext * /*C*/, wmDrag *drag, const wmEvent * /*event*/)
{
return WM_drag_is_ID_type(drag, ID_IM);
}
static bool node_mask_drop_poll(bContext * /*C*/, wmDrag *drag, const wmEvent * /*event*/)
{
return WM_drag_is_ID_type(drag, ID_MSK);
}
static bool node_material_drop_poll(bContext *C, wmDrag *drag, const wmEvent * /*event*/)
{
return WM_drag_is_ID_type(drag, ID_MA) && !UI_but_active_drop_name(C);
}
static bool node_color_drop_poll(bContext *C, wmDrag *drag, const wmEvent * /*event*/)
{
return (drag->type == WM_DRAG_COLOR) && !UI_but_active_drop_color(C);
}
static bool node_import_file_drop_poll(bContext *C, wmDrag *drag, const wmEvent * /*event*/)
{
SpaceNode *snode = CTX_wm_space_node(C);
if (!snode) {
return false;
}
if (!snode->edittree) {
return false;
}
if (snode->edittree->type != NTREE_GEOMETRY) {
return false;
}
if (drag->type != WM_DRAG_PATH) {
return false;
}
const blender::Span<std::string> paths = WM_drag_get_paths(drag);
for (const StringRef path : paths) {
if (path.endswith(".csv") || path.endswith(".obj") || path.endswith(".ply") ||
path.endswith(".stl") || path.endswith(".txt") || path.endswith(".vdb"))
{
return true;
}
}
return false;
}
static bool node_socket_drop_poll(bContext *C, wmDrag *drag, const wmEvent *event)
{
if (drag->type != WM_DRAG_NODE_TREE_INTERFACE) {
return false;
}
SpaceNode *snode = CTX_wm_space_node(C);
if (!snode || !snode->edittree) {
return false;
}
const bNodeTree *target_ntree = snode->edittree;
auto *drag_data = static_cast<bke::node_interface::bNodeTreeInterfaceItemReference *>(
drag->poin);
/* Drag only onto node editors of the same node tree. */
const bNodeTree *source_ntree = drag_data->tree;
if (target_ntree != source_ntree) {
return false;
}
/* Accept only socket items. */
const bNodeTreeInterfaceSocket *socket =
bke::node_interface::get_item_as<bNodeTreeInterfaceSocket>(drag_data->item);
if (socket) {
/* The check to avoid dragging output sockets is deferred to the
* operator's poll in order to display a hint tooltip. */
return true;
}
/* Unless Ctrl is held, prefer dragging the toggle socket alone from a panel with toggle. */
if (!(event->modifier & KM_CTRL)) {
const bNodeTreeInterfacePanel *panel =
bke::node_interface::get_item_as<bNodeTreeInterfacePanel>(drag_data->item);
if (panel && panel->header_toggle_socket()) {
return true;
}
}
return false;
}
static bool node_panel_drop_poll(bContext *C, wmDrag *drag, const wmEvent *event)
{
if (drag->type != WM_DRAG_NODE_TREE_INTERFACE) {
return false;
}
SpaceNode *snode = CTX_wm_space_node(C);
if (!snode || !snode->edittree) {
return false;
}
const bNodeTree *target_ntree = snode->edittree;
auto *drag_data = static_cast<bke::node_interface::bNodeTreeInterfaceItemReference *>(
drag->poin);
/* Drag only onto node editors of the same node. */
const bNodeTree *source_ntree = drag_data->tree;
if (target_ntree != source_ntree) {
return false;
}
/* Accept only panel items. */
const bNodeTreeInterfacePanel *panel = bke::node_interface::get_item_as<bNodeTreeInterfacePanel>(
drag_data->item);
if (panel) {
/* Unless Ctrl is held, prefer dragging only the toggle socket of a panel with toggle. */
if (!(event->modifier & KM_CTRL)) {
if (panel->header_toggle_socket()) {
return false;
}
}
/* The check for whether the panel contains at least one input socket is
* deferred to the operator's poll in order to display a hint tooltip. */
return true;
}
return false;
}
static void node_group_drop_copy(bContext *C, wmDrag *drag, wmDropBox *drop)
{
ID *id = WM_drag_get_local_ID_or_import_from_asset(C, drag, 0);
RNA_int_set(drop->ptr, "session_uid", int(id->session_uid));
RNA_boolean_set(drop->ptr, "show_datablock_in_node", (drag->type != WM_DRAG_ASSET));
}
static void node_id_drop_copy(bContext *C, wmDrag *drag, wmDropBox *drop)
{
ID *id = WM_drag_get_local_ID_or_import_from_asset(C, drag, 0);
RNA_int_set(drop->ptr, "session_uid", int(id->session_uid));
}
static void node_id_im_drop_copy(bContext *C, wmDrag *drag, wmDropBox *drop)
{
ID *id = WM_drag_get_local_ID_or_import_from_asset(C, drag, 0);
if (id) {
RNA_int_set(drop->ptr, "session_uid", int(id->session_uid));
RNA_struct_property_unset(drop->ptr, "filepath");
return;
}
}
static void node_import_file_drop_copy(bContext * /*C*/, wmDrag *drag, wmDropBox *drop)
{
io::paths_to_operator_properties(drop->ptr, WM_drag_get_paths(drag));
}
static void node_socket_drop_copy(bContext * /*C*/, wmDrag *drag, wmDropBox *drop)
{
if (drag->type != WM_DRAG_NODE_TREE_INTERFACE) {
return;
}
auto *drag_data = static_cast<bke::node_interface::bNodeTreeInterfaceItemReference *>(
drag->poin);
const bNodeTreeInterfaceSocket *socket =
bke::node_interface::get_item_as<bNodeTreeInterfaceSocket>(drag_data->item);
if (!socket) {
const bNodeTreeInterfacePanel *panel =
bke::node_interface::get_item_as<bNodeTreeInterfacePanel>(drag_data->item);
socket = panel->header_toggle_socket();
}
BLI_assert(socket);
PropertyRNA *prop = RNA_struct_find_property(drop->ptr, "panel_identifier");
RNA_property_unset(drop->ptr, prop);
RNA_string_set(drop->ptr, "socket_identifier", socket->identifier);
}
static void node_panel_drop_copy(bContext * /*C*/, wmDrag *drag, wmDropBox *drop)
{
if (drag->type != WM_DRAG_NODE_TREE_INTERFACE) {
return;
}
auto *drag_data = static_cast<bke::node_interface::bNodeTreeInterfaceItemReference *>(
drag->poin);
const bNodeTreeInterfacePanel *panel = bke::node_interface::get_item_as<bNodeTreeInterfacePanel>(
drag_data->item);
BLI_assert(panel);
PropertyRNA *prop = RNA_struct_find_property(drop->ptr, "socket_identifier");
RNA_property_unset(drop->ptr, prop);
RNA_int_set(drop->ptr, "panel_identifier", panel->identifier);
}
static std::string node_socket_drop_tooltip(bContext * /*C*/,
wmDrag *drag,
const int /*xy*/[2],
wmDropBox * /*drop*/)
{
auto *drag_data = static_cast<bke::node_interface::bNodeTreeInterfaceItemReference *>(
drag->poin);
const bNodeTreeInterfaceSocket *socket =
bke::node_interface::get_item_as<bNodeTreeInterfaceSocket>(drag_data->item);
if (socket) {
return BLI_sprintfN(TIP_("Add \"%s\" Input"), socket->name);
}
else {
const bNodeTreeInterfacePanel *panel =
bke::node_interface::get_item_as<bNodeTreeInterfacePanel>(drag_data->item);
socket = panel->header_toggle_socket();
/* Dragging a panel with toggle defaults to dragging the toggle socket.
* Display a hint with the modifier required to drag the panel. */
if (socket) {
return BLI_sprintfN(TIP_("Add \"%s\" Input (Ctrl to add panel)"), socket->name);
}
}
BLI_assert_unreachable();
return "Error: Unsupported socket.";
}
static std::string node_panel_drop_tooltip(bContext * /*C*/,
wmDrag *drag,
const int /*xy*/[2],
wmDropBox * /*drop*/)
{
auto *drag_data = static_cast<bke::node_interface::bNodeTreeInterfaceItemReference *>(
drag->poin);
const bNodeTreeInterfacePanel *panel = bke::node_interface::get_item_as<bNodeTreeInterfacePanel>(
drag_data->item);
BLI_assert(panel);
return BLI_sprintfN(TIP_("Add \"%s\" Panel"), panel->name);
}
/* this region dropbox definition */
static void node_dropboxes()
{
ListBase *lb = WM_dropboxmap_find("Node Editor", SPACE_NODE, RGN_TYPE_WINDOW);
WM_dropbox_add(lb,
"NODE_OT_add_object",
node_object_drop_poll,
node_id_drop_copy,
WM_drag_free_imported_drag_ID,
nullptr);
WM_dropbox_add(lb,
"NODE_OT_add_collection",
node_collection_drop_poll,
node_id_drop_copy,
WM_drag_free_imported_drag_ID,
nullptr);
WM_dropbox_add(lb,
"NODE_OT_add_group",
node_group_drop_poll,
node_group_drop_copy,
WM_drag_free_imported_drag_ID,
nullptr);
WM_dropbox_add(lb,
"NODE_OT_add_image",
node_id_im_drop_poll,
node_id_im_drop_copy,
WM_drag_free_imported_drag_ID,
nullptr);
WM_dropbox_add(lb,
"NODE_OT_add_mask",
node_mask_drop_poll,
node_id_drop_copy,
WM_drag_free_imported_drag_ID,
nullptr);
WM_dropbox_add(lb,
"NODE_OT_add_material",
node_material_drop_poll,
node_id_drop_copy,
WM_drag_free_imported_drag_ID,
nullptr);
WM_dropbox_add(
lb, "NODE_OT_add_color", node_color_drop_poll, UI_drop_color_copy, nullptr, nullptr);
WM_dropbox_add(lb,
"NODE_OT_add_import_node",
node_import_file_drop_poll,
node_import_file_drop_copy,
nullptr,
nullptr);
WM_dropbox_add(lb,
"NODE_OT_add_group_input_node",
node_socket_drop_poll,
node_socket_drop_copy,
nullptr,
node_socket_drop_tooltip);
WM_dropbox_add(lb,
"NODE_OT_add_group_input_node",
node_panel_drop_poll,
node_panel_drop_copy,
nullptr,
node_panel_drop_tooltip);
}
/* ************* end drop *********** */
/* add handlers, stuff you only do once or on area/region changes */
static void node_header_region_init(wmWindowManager * /*wm*/, ARegion *region)
{
ED_region_header_init(region);
}
static void node_header_region_draw(const bContext *C, ARegion *region)
{
/* find and set the context */
snode_set_context(*C);
ED_region_header(C, region);
}
/* used for header + main region */
static void node_region_listener(const wmRegionListenerParams *params)
{
ARegion *region = params->region;
const wmNotifier *wmn = params->notifier;
wmGizmoMap *gzmap = region->runtime->gizmo_map;
/* context changes */
switch (wmn->category) {
case NC_SPACE:
switch (wmn->data) {
case ND_SPACE_NODE:
ED_region_tag_redraw(region);
break;
case ND_SPACE_NODE_VIEW:
WM_gizmomap_tag_refresh(gzmap);
break;
}
break;
case NC_ANIMATION:
if (wmn->data == ND_NLA_ACTCHANGE) {
ED_region_tag_redraw(region);
}
break;
case NC_SCREEN:
if (wmn->data == ND_LAYOUTSET || wmn->action == NA_EDITED) {
WM_gizmomap_tag_refresh(gzmap);
}
switch (wmn->data) {
case ND_ANIMPLAY:
case ND_LAYER:
ED_region_tag_redraw(region);
break;
}
break;
case NC_WM:
if (wmn->data == ND_JOB) {
ED_region_tag_redraw(region);
}
break;
case NC_SCENE:
ED_region_tag_redraw(region);
if (wmn->data == ND_RENDER_RESULT) {
WM_gizmomap_tag_refresh(gzmap);
}
break;
case NC_NODE:
ED_region_tag_redraw(region);
if (ELEM(wmn->action, NA_EDITED, NA_SELECTED)) {
WM_gizmomap_tag_refresh(gzmap);
}
break;
case NC_MATERIAL:
case NC_TEXTURE:
case NC_WORLD:
case NC_LINESTYLE:
ED_region_tag_redraw(region);
break;
case NC_OBJECT:
if (wmn->data == ND_OB_SHADING) {
ED_region_tag_redraw(region);
}
break;
case NC_ID:
if (ELEM(wmn->action, NA_RENAME, NA_EDITED)) {
ED_region_tag_redraw(region);
}
break;
case NC_GPENCIL:
if (wmn->action == NA_EDITED) {
ED_region_tag_redraw(region);
}
else if (wmn->data & ND_GPENCIL_EDITMODE) {
ED_region_tag_redraw(region);
}
break;
case NC_VIEWER_PATH:
ED_region_tag_redraw(region);
break;
}
}
} // namespace blender::ed::space_node
/* Outside of blender namespace to avoid Python documentation build error with `ctypes`. */
extern "C" {
const char *node_context_dir[] = {
"selected_nodes", "active_node", "light", "material", "world", nullptr};
};
namespace blender::ed::space_node {
static int /*eContextResult*/ node_context(const bContext *C,
const char *member,
bContextDataResult *result)
{
SpaceNode *snode = CTX_wm_space_node(C);
if (CTX_data_dir(member)) {
CTX_data_dir_set(result, node_context_dir);
return CTX_RESULT_OK;
}
if (CTX_data_equals(member, "selected_nodes")) {
if (snode->edittree) {
for (bNode *node : snode->edittree->all_nodes()) {
if (node->flag & NODE_SELECT) {
CTX_data_list_add(result, &snode->edittree->id, &RNA_Node, node);
}
}
}
CTX_data_type_set(result, ContextDataType::Collection);
return CTX_RESULT_OK;
}
if (CTX_data_equals(member, "active_node")) {
if (snode->edittree) {
bNode *node = bke::node_get_active(*snode->edittree);
CTX_data_pointer_set(result, &snode->edittree->id, &RNA_Node, node);
}
CTX_data_type_set(result, ContextDataType::Pointer);
return CTX_RESULT_OK;
}
if (CTX_data_equals(member, "node_previews")) {
if (snode->nodetree) {
CTX_data_pointer_set(result,
&snode->nodetree->id,
&RNA_NodeInstanceHash,
&snode->nodetree->runtime->previews);
}
CTX_data_type_set(result, ContextDataType::Pointer);
return CTX_RESULT_OK;
}
if (CTX_data_equals(member, "material")) {
if (snode->id && GS(snode->id->name) == ID_MA) {
CTX_data_id_pointer_set(result, snode->id);
}
return CTX_RESULT_OK;
}
if (CTX_data_equals(member, "light")) {
if (snode->id && GS(snode->id->name) == ID_LA) {
CTX_data_id_pointer_set(result, snode->id);
}
return CTX_RESULT_OK;
}
if (CTX_data_equals(member, "world")) {
if (snode->id && GS(snode->id->name) == ID_WO) {
CTX_data_id_pointer_set(result, snode->id);
}
return CTX_RESULT_OK;
}
return CTX_RESULT_MEMBER_NOT_FOUND;
}
static void node_widgets()
{
/* Create the widget-map for the area here. */
wmGizmoMapType_Params params{SPACE_NODE, RGN_TYPE_WINDOW};
wmGizmoMapType *gzmap_type = WM_gizmomaptype_ensure(&params);
WM_gizmogrouptype_append_and_link(gzmap_type, NODE_GGT_backdrop_transform);
WM_gizmogrouptype_append_and_link(gzmap_type, NODE_GGT_backdrop_crop);
WM_gizmogrouptype_append_and_link(gzmap_type, NODE_GGT_backdrop_glare);
WM_gizmogrouptype_append_and_link(gzmap_type, NODE_GGT_backdrop_corner_pin);
WM_gizmogrouptype_append_and_link(gzmap_type, NODE_GGT_backdrop_box_mask);
WM_gizmogrouptype_append_and_link(gzmap_type, NODE_GGT_backdrop_ellipse_mask);
WM_gizmogrouptype_append_and_link(gzmap_type, NODE_GGT_backdrop_split);
}
static void node_id_remap(ID *old_id, ID *new_id, SpaceNode *snode)
{
if (snode->id == old_id) {
/* nasty DNA logic for SpaceNode:
* ideally should be handled by editor code, but would be bad level call
*/
BLI_freelistN(&snode->treepath);
/* XXX Untested in case new_id != nullptr... */
snode->id = new_id;
snode->from = nullptr;
snode->nodetree = nullptr;
snode->edittree = nullptr;
}
else if (GS(old_id->name) == ID_OB) {
if (snode->from == old_id) {
if (new_id == nullptr) {
snode->flag &= ~SNODE_PIN;
}
snode->from = new_id;
}
}
else if (GS(old_id->name) == ID_GD_LEGACY) {
if ((ID *)snode->gpd == old_id) {
snode->gpd = (bGPdata *)new_id;
id_us_min(old_id);
id_us_plus(new_id);
}
}
else if (GS(old_id->name) == ID_NT) {
if (snode->selected_node_group) {
if (&snode->selected_node_group->id == old_id) {
snode->selected_node_group = reinterpret_cast<bNodeTree *>(new_id);
}
}
bNodeTreePath *path, *path_next;
for (path = (bNodeTreePath *)snode->treepath.first; path; path = path->next) {
if ((ID *)path->nodetree == old_id) {
path->nodetree = (bNodeTree *)new_id;
id_us_ensure_real(new_id);
}
if (path == snode->treepath.first) {
/* first nodetree in path is same as snode->nodetree */
snode->nodetree = path->nodetree;
}
if (path->nodetree == nullptr) {
break;
}
}
/* remaining path entries are invalid, remove */
for (; path; path = path_next) {
path_next = path->next;
BLI_remlink(&snode->treepath, path);
MEM_freeN(path);
}
/* edittree is just the last in the path,
* set this directly since the path may have been shortened above */
if (snode->treepath.last) {
path = (bNodeTreePath *)snode->treepath.last;
snode->edittree = path->nodetree;
ED_node_set_active_viewer_key(snode);
}
else {
snode->edittree = nullptr;
}
}
}
static void node_id_remap(ScrArea * /*area*/,
SpaceLink *slink,
const blender::bke::id::IDRemapper &mappings)
{
/* Although we should be able to perform all the mappings in a single go this lead to issues when
* running the python test cases. Somehow the nodetree/edittree weren't updated to the new
* pointers that generated a SEGFAULT.
*
* To move forward we should perhaps remove snode->edittree and snode->nodetree as they are just
* copies of pointers. All usages should be calling a function that will receive the appropriate
* instance.
*
* We could also move a remap address at a time to use the IDRemapper as that should get closer
* to cleaner code. See {D13615} for more information about this topic.
*/
mappings.iter([&](ID *old_id, ID *new_id) {
node_id_remap(old_id, new_id, reinterpret_cast<SpaceNode *>(slink));
});
}
static void node_foreach_id(SpaceLink *space_link, LibraryForeachIDData *data)
{
SpaceNode *snode = reinterpret_cast<SpaceNode *>(space_link);
const int data_flags = BKE_lib_query_foreachid_process_flags_get(data);
const bool is_readonly = (data_flags & IDWALK_READONLY) != 0;
const bool allow_pointer_access = (data_flags & IDWALK_NO_ORIG_POINTERS_ACCESS) == 0;
bool is_embedded_nodetree = snode->id != nullptr && allow_pointer_access &&
bke::node_tree_from_id(snode->id) == snode->nodetree;
BKE_LIB_FOREACHID_PROCESS_ID(data, snode->id, IDWALK_CB_DIRECT_WEAK_LINK);
BKE_LIB_FOREACHID_PROCESS_ID(data, snode->from, IDWALK_CB_DIRECT_WEAK_LINK);
bNodeTreePath *path = static_cast<bNodeTreePath *>(snode->treepath.first);
BLI_assert(path == nullptr || path->nodetree == snode->nodetree);
if (is_embedded_nodetree) {
BKE_LIB_FOREACHID_PROCESS_IDSUPER(data, snode->nodetree, IDWALK_CB_EMBEDDED_NOT_OWNING);
if (path != nullptr) {
BKE_LIB_FOREACHID_PROCESS_IDSUPER(data, path->nodetree, IDWALK_CB_EMBEDDED_NOT_OWNING);
}
/* Embedded ID pointers are not remapped (besides exceptions), ensure it still matches
* actual data. Note that `snode->id` was already processed (and therefore potentially
* remapped) above. */
if (!is_readonly) {
snode->nodetree = (snode->id == nullptr) ? nullptr : bke::node_tree_from_id(snode->id);
if (path != nullptr) {
path->nodetree = snode->nodetree;
}
}
}
else {
BKE_LIB_FOREACHID_PROCESS_IDSUPER(
data, snode->nodetree, IDWALK_CB_USER_ONE | IDWALK_CB_DIRECT_WEAK_LINK);
if (path != nullptr) {
BKE_LIB_FOREACHID_PROCESS_IDSUPER(
data, path->nodetree, IDWALK_CB_USER_ONE | IDWALK_CB_DIRECT_WEAK_LINK);
}
}
BKE_LIB_FOREACHID_PROCESS_IDSUPER(
data, snode->selected_node_group, IDWALK_CB_USER_ONE | IDWALK_CB_DIRECT_WEAK_LINK);
/* Both `snode->id` and `snode->nodetree` have been remapped now, so their data can be
* accessed. */
BLI_assert(snode->id == nullptr || snode->nodetree == nullptr ||
(snode->nodetree->id.flag & ID_FLAG_EMBEDDED_DATA) == 0 ||
snode->nodetree == bke::node_tree_from_id(snode->id));
/* This is mainly here for readfile case ('lib_link' process), as in such case there is no access
* to original data allowed, so no way to know whether the SpaceNode nodetree pointer is an
* embedded one or not. */
if (!is_readonly && snode->id && !snode->nodetree) {
is_embedded_nodetree = true;
snode->nodetree = bke::node_tree_from_id(snode->id);
if (path != nullptr) {
path->nodetree = snode->nodetree;
}
}
if (path != nullptr) {
for (path = path->next; path != nullptr; path = path->next) {
BLI_assert(path->nodetree != nullptr);
if (allow_pointer_access) {
BLI_assert((path->nodetree->id.flag & ID_FLAG_EMBEDDED_DATA) == 0);
}
BKE_LIB_FOREACHID_PROCESS_IDSUPER(
data, path->nodetree, IDWALK_CB_USER_ONE | IDWALK_CB_DIRECT_WEAK_LINK);
if (path->nodetree == nullptr) {
BLI_assert(!is_readonly);
/* Remaining path entries are invalid, remove them. */
for (bNodeTreePath *path_next; path; path = path_next) {
path_next = path->next;
BLI_remlink(&snode->treepath, path);
MEM_freeN(path);
}
break;
}
}
}
BLI_assert(path == nullptr);
if (!is_readonly) {
/* `edittree` is just the last in the path, set this directly since the path may have
* been shortened above. */
if (snode->treepath.last != nullptr) {
path = static_cast<bNodeTreePath *>(snode->treepath.last);
snode->edittree = path->nodetree;
}
else {
snode->edittree = nullptr;
}
}
else {
/* Only process this pointer in readonly case, otherwise could lead to a bad
* double-remapping e.g. */
if (is_embedded_nodetree && snode->edittree == snode->nodetree) {
BKE_LIB_FOREACHID_PROCESS_IDSUPER(data, snode->edittree, IDWALK_CB_EMBEDDED_NOT_OWNING);
}
else {
BKE_LIB_FOREACHID_PROCESS_IDSUPER(data, snode->edittree, IDWALK_CB_DIRECT_WEAK_LINK);
}
}
}
static int node_space_subtype_get(ScrArea *area)
{
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
return rna_node_tree_idname_to_enum(snode->tree_idname);
}
static void node_space_subtype_set(ScrArea *area, int value)
{
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
ED_node_set_tree_type(snode, rna_node_tree_type_from_enum(value));
}
static void node_space_subtype_item_extend(bContext *C, EnumPropertyItem **item, int *totitem)
{
bool free;
const EnumPropertyItem *item_src = RNA_enum_node_tree_types_itemf_impl(C, &free);
RNA_enum_items_add(item, totitem, item_src);
if (free) {
MEM_freeN(item_src);
}
}
static blender::StringRefNull node_space_name_get(const ScrArea *area)
{
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
bke::bNodeTreeType *tree_type = bke::node_tree_type_find(snode->tree_idname);
if (tree_type == nullptr) {
return IFACE_("Node Editor");
}
return tree_type->ui_name;
}
static int node_space_icon_get(const ScrArea *area)
{
SpaceNode *snode = static_cast<SpaceNode *>(area->spacedata.first);
bke::bNodeTreeType *tree_type = bke::node_tree_type_find(snode->tree_idname);
if (tree_type == nullptr) {
return ICON_NODETREE;
}
return tree_type->ui_icon;
}
static void node_space_blend_read_data(BlendDataReader *reader, SpaceLink *sl)
{
SpaceNode *snode = (SpaceNode *)sl;
if (snode->gpd) {
BLO_read_struct(reader, bGPdata, &snode->gpd);
BKE_gpencil_blend_read_data(reader, snode->gpd);
}
BLO_read_struct_list(reader, bNodeTreePath, &snode->treepath);
snode->edittree = nullptr;
snode->runtime = nullptr;
}
static void node_space_blend_write(BlendWriter *writer, SpaceLink *sl)
{
SpaceNode *snode = (SpaceNode *)sl;
BLO_write_struct(writer, SpaceNode, snode);
LISTBASE_FOREACH (bNodeTreePath *, path, &snode->treepath) {
BLO_write_struct(writer, bNodeTreePath, path);
}
}
static void node_asset_shelf_region_init(wmWindowManager *wm, ARegion *region)
{
using namespace blender::ed;
wmKeyMap *keymap = WM_keymap_ensure(
wm->runtime->defaultconf, "Node Generic", SPACE_NODE, RGN_TYPE_WINDOW);
WM_event_add_keymap_handler(&region->runtime->handlers, keymap);
asset::shelf::region_init(wm, region);
}
} // namespace blender::ed::space_node
void ED_spacetype_node()
{
using namespace blender::ed;
using namespace blender::ed::space_node;
std::unique_ptr<SpaceType> st = std::make_unique<SpaceType>();
ARegionType *art;
st->spaceid = SPACE_NODE;
STRNCPY_UTF8(st->name, "Node");
st->create = node_create;
st->free = node_free;
st->init = node_init;
st->exit = node_exit;
st->duplicate = node_duplicate;
st->operatortypes = node_operatortypes;
st->keymap = node_keymap;
st->listener = node_area_listener;
st->refresh = node_area_refresh;
st->context = node_context;
st->dropboxes = node_dropboxes;
st->gizmos = node_widgets;
st->id_remap = node_id_remap;
st->foreach_id = node_foreach_id;
st->space_subtype_item_extend = node_space_subtype_item_extend;
st->space_subtype_get = node_space_subtype_get;
st->space_subtype_set = node_space_subtype_set;
st->space_name_get = node_space_name_get;
st->space_icon_get = node_space_icon_get;
st->blend_read_data = node_space_blend_read_data;
st->blend_read_after_liblink = nullptr;
st->blend_write = node_space_blend_write;
/* regions: main window */
art = MEM_callocN<ARegionType>("spacetype node region");
art->regionid = RGN_TYPE_WINDOW;
art->init = node_main_region_init;
art->draw = node_main_region_draw;
art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_GIZMO | ED_KEYMAP_TOOL | ED_KEYMAP_VIEW2D |
ED_KEYMAP_FRAMES | ED_KEYMAP_GPENCIL;
art->listener = node_region_listener;
art->cursor = node_cursor;
art->event_cursor = true;
art->clip_gizmo_events_by_ui = true;
art->lock = REGION_DRAW_LOCK_ALL;
BLI_addhead(&st->regiontypes, art);
/* regions: header */
art = MEM_callocN<ARegionType>("spacetype node region");
art->regionid = RGN_TYPE_HEADER;
art->prefsizey = HEADERY;
art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_VIEW2D | ED_KEYMAP_FRAMES | ED_KEYMAP_HEADER;
art->listener = node_region_listener;
art->init = node_header_region_init;
art->draw = node_header_region_draw;
BLI_addhead(&st->regiontypes, art);
/* regions: asset shelf */
art = MEM_callocN<ARegionType>("spacetype node asset shelf region");
art->regionid = RGN_TYPE_ASSET_SHELF;
art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_ASSET_SHELF | ED_KEYMAP_FRAMES;
art->duplicate = asset::shelf::region_duplicate;
art->free = asset::shelf::region_free;
art->on_poll_success = asset::shelf::region_on_poll_success;
art->listener = asset::shelf::region_listen;
art->message_subscribe = asset::shelf::region_message_subscribe;
art->poll = asset::shelf::regions_poll;
art->snap_size = asset::shelf::region_snap;
art->on_user_resize = asset::shelf::region_on_user_resize;
art->context = asset::shelf::context;
art->init = node_asset_shelf_region_init;
art->layout = asset::shelf::region_layout;
art->draw = asset::shelf::region_draw;
BLI_addhead(&st->regiontypes, art);
/* regions: asset shelf header */
art = MEM_callocN<ARegionType>("spacetype node asset shelf header region");
art->regionid = RGN_TYPE_ASSET_SHELF_HEADER;
art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_ASSET_SHELF | ED_KEYMAP_VIEW2D | ED_KEYMAP_FOOTER;
art->init = asset::shelf::header_region_init;
art->poll = asset::shelf::regions_poll;
art->draw = asset::shelf::header_region;
art->listener = asset::shelf::header_region_listen;
art->context = asset::shelf::context;
BLI_addhead(&st->regiontypes, art);
asset::shelf::types_register(art, SPACE_NODE);
/* regions: list-view/buttons */
art = MEM_callocN<ARegionType>("spacetype node region");
art->regionid = RGN_TYPE_UI;
art->prefsizex = UI_SIDEBAR_PANEL_WIDTH;
art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_FRAMES;
art->listener = node_region_listener;
art->message_subscribe = ED_area_do_mgs_subscribe_for_tool_ui;
art->init = node_buttons_region_init;
art->snap_size = ED_region_generic_panel_region_snap_size;
art->draw = node_buttons_region_draw;
BLI_addhead(&st->regiontypes, art);
node_tree_interface_panel_register(art);
/* regions: toolbar */
art = MEM_callocN<ARegionType>("spacetype view3d tools region");
art->regionid = RGN_TYPE_TOOLS;
art->prefsizex = int(UI_TOOLBAR_WIDTH);
art->prefsizey = 50; /* XXX */
art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_FRAMES;
art->listener = node_region_listener;
art->message_subscribe = ED_region_generic_tools_region_message_subscribe;
art->snap_size = ED_region_generic_tools_region_snap_size;
art->init = node_toolbar_region_init;
art->draw = node_toolbar_region_draw;
BLI_addhead(&st->regiontypes, art);
WM_menutype_add(MEM_dupallocN<MenuType>(__func__, catalog_assets_menu_type()));
WM_menutype_add(MEM_dupallocN<MenuType>(__func__, unassigned_assets_menu_type()));
WM_menutype_add(MEM_dupallocN<MenuType>(__func__, add_root_catalogs_menu_type()));
WM_menutype_add(MEM_dupallocN<MenuType>(__func__, swap_root_catalogs_menu_type()));
BKE_spacetype_register(std::move(st));
}
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