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test2/source/blender/editors/space_node/node_templates.cc
Damien Picard ba45498955 I18n: Use context for node panel translation in material properties 
This is a follow-up to 9ce0a2d1d5 and uses the same logic. It allows
translation of node panel labels inside the material properties, using
their specified translation context. Not in use currently, but may be
needed in the future.

Pull Request: https://projects.blender.org/blender/blender/pulls/139367
2025-05-26 09:36:04 +02:00

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/* SPDX-FileCopyrightText: 2023 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup edinterface
*/
#include <cstdlib>
#include <cstring>
#include <optional>
#include <fmt/format.h>
#include "MEM_guardedalloc.h"
#include "DNA_node_types.h"
#include "DNA_screen_types.h"
#include "BLI_listbase.h"
#include "BLI_string.h"
#include "BLI_string_utf8.h"
#include "BLI_vector.hh"
#include "BLT_translation.hh"
#include "BKE_context.hh"
#include "BKE_lib_id.hh"
#include "BKE_main.hh"
#include "BKE_main_invariants.hh"
#include "BKE_node_runtime.hh"
#include "BKE_node_tree_update.hh"
#include "RNA_access.hh"
#include "RNA_prototypes.hh"
#include "NOD_node_declaration.hh"
#include "NOD_socket.hh"
#include "../interface/interface_intern.hh" /* XXX bad level */
#include "UI_interface.hh"
#include "ED_node.hh" /* own include */
#include "node_intern.hh"
#include "ED_undo.hh"
#include "WM_api.hh"
using blender::nodes::NodeDeclaration;
namespace blender::ed::space_node {
/************************* Node Socket Manipulation **************************/
/* describes an instance of a node type and a specific socket to link */
struct NodeLinkItem {
int socket_index; /* index for linking */
int socket_type; /* socket type for compatibility check */
const char *socket_name; /* ui label of the socket */
const char *node_name; /* ui label of the node */
/* extra settings */
bNodeTree *ngroup; /* group node tree */
};
static void node_link_item_init(NodeLinkItem &item)
{
item.socket_index = -1;
item.socket_type = SOCK_CUSTOM;
item.socket_name = nullptr;
item.node_name = nullptr;
item.ngroup = nullptr;
}
/* Compare an existing node to a link item to see if it can be reused.
* item must be for the same node type!
* XXX should become a node type callback
*/
static bool node_link_item_compare(bNode *node, NodeLinkItem *item)
{
if (node->is_group()) {
return (node->id == (ID *)item->ngroup);
}
return true;
}
static void node_link_item_apply(bNodeTree *ntree, bNode *node, NodeLinkItem *item)
{
if (node->is_group()) {
node->id = (ID *)item->ngroup;
BKE_ntree_update_tag_node_property(ntree, node);
}
else {
/* nothing to do for now */
}
if (node->id) {
id_us_plus(node->id);
}
}
static void node_tag_recursive(bNode *node)
{
if (!node || (node->flag & NODE_TEST)) {
return; /* in case of cycles */
}
node->flag |= NODE_TEST;
LISTBASE_FOREACH (bNodeSocket *, input, &node->inputs) {
if (input->link) {
node_tag_recursive(input->link->fromnode);
}
}
}
static void node_clear_recursive(bNode *node)
{
if (!node || !(node->flag & NODE_TEST)) {
return; /* in case of cycles */
}
node->flag &= ~NODE_TEST;
LISTBASE_FOREACH (bNodeSocket *, input, &node->inputs) {
if (input->link) {
node_clear_recursive(input->link->fromnode);
}
}
}
static void node_remove_linked(Main *bmain, bNodeTree *ntree, bNode *rem_node)
{
bNode *node, *next;
if (!rem_node) {
return;
}
/* tag linked nodes to be removed */
for (bNode *node : ntree->all_nodes()) {
node->flag &= ~NODE_TEST;
}
node_tag_recursive(rem_node);
/* clear tags on nodes that are still used by other nodes */
for (bNode *node : ntree->all_nodes()) {
if (!(node->flag & NODE_TEST)) {
LISTBASE_FOREACH (bNodeSocket *, sock, &node->inputs) {
if (sock->link && sock->link->fromnode != rem_node) {
node_clear_recursive(sock->link->fromnode);
}
}
}
}
/* remove nodes */
for (node = (bNode *)ntree->nodes.first; node; node = next) {
next = node->next;
if (node->flag & NODE_TEST) {
bke::node_remove_node(bmain, *ntree, *node, true);
}
}
}
/* disconnect socket from the node it is connected to */
static void node_socket_disconnect(Main *bmain,
bNodeTree *ntree,
bNode *node_to,
bNodeSocket *sock_to)
{
if (!sock_to->link) {
return;
}
bke::node_remove_link(ntree, *sock_to->link);
sock_to->flag |= SOCK_COLLAPSED;
BKE_ntree_update_tag_node_property(ntree, node_to);
BKE_main_ensure_invariants(*bmain, ntree->id);
}
/* remove all nodes connected to this socket, if they aren't connected to other nodes */
static void node_socket_remove(Main *bmain, bNodeTree *ntree, bNode *node_to, bNodeSocket *sock_to)
{
if (!sock_to->link) {
return;
}
node_remove_linked(bmain, ntree, sock_to->link->fromnode);
sock_to->flag |= SOCK_COLLAPSED;
BKE_ntree_update_tag_node_property(ntree, node_to);
BKE_main_ensure_invariants(*bmain, ntree->id);
}
/* add new node connected to this socket, or replace an existing one */
static void node_socket_add_replace(const bContext *C,
bNodeTree *ntree,
bNode *node_to,
bNodeSocket *sock_to,
int type,
NodeLinkItem *item)
{
Main *bmain = CTX_data_main(C);
bNode *node_from;
bNodeSocket *sock_from_tmp;
bNode *node_prev = nullptr;
/* unlink existing node */
if (sock_to->link) {
node_prev = sock_to->link->fromnode;
bke::node_remove_link(ntree, *sock_to->link);
}
/* find existing node that we can use */
for (node_from = (bNode *)ntree->nodes.first; node_from; node_from = node_from->next) {
if (node_from->type_legacy == type) {
break;
}
}
if (node_from) {
if (node_from->inputs.first || node_from->typeinfo->draw_buttons ||
node_from->typeinfo->draw_buttons_ex)
{
node_from = nullptr;
}
}
if (node_prev && node_prev->type_legacy == type && node_link_item_compare(node_prev, item)) {
/* keep the previous node if it's the same type */
node_from = node_prev;
}
else if (!node_from) {
node_from = bke::node_add_static_node(C, *ntree, type);
if (node_prev != nullptr) {
/* If we're replacing existing node, use its location. */
node_from->location[0] = node_prev->location[0];
node_from->location[1] = node_prev->location[1];
}
else {
sock_from_tmp = (bNodeSocket *)BLI_findlink(&node_from->outputs, item->socket_index);
bke::node_position_relative(*node_from, *node_to, *sock_from_tmp, *sock_to);
}
node_link_item_apply(ntree, node_from, item);
BKE_main_ensure_invariants(*bmain, ntree->id);
}
bke::node_set_active(*ntree, *node_from);
/* add link */
sock_from_tmp = (bNodeSocket *)BLI_findlink(&node_from->outputs, item->socket_index);
bke::node_add_link(*ntree, *node_from, *sock_from_tmp, *node_to, *sock_to);
sock_to->flag &= ~SOCK_COLLAPSED;
/* copy input sockets from previous node */
if (node_prev && node_from != node_prev) {
LISTBASE_FOREACH (bNodeSocket *, sock_prev, &node_prev->inputs) {
LISTBASE_FOREACH (bNodeSocket *, sock_from, &node_from->inputs) {
if (bke::node_count_socket_links(*ntree, *sock_from) >=
bke::node_socket_link_limit(*sock_from))
{
continue;
}
if (STREQ(sock_prev->identifier, sock_from->identifier) &&
sock_prev->type == sock_from->type)
{
bNodeLink *link = sock_prev->link;
if (link && link->fromnode) {
bke::node_add_link(*ntree, *link->fromnode, *link->fromsock, *node_from, *sock_from);
bke::node_remove_link(ntree, *link);
}
node_socket_copy_default_value(sock_from, sock_prev);
}
}
}
/* also preserve mapping for texture nodes */
if (node_from->typeinfo->nclass == NODE_CLASS_TEXTURE &&
node_prev->typeinfo->nclass == NODE_CLASS_TEXTURE &&
/* White noise texture node does not have NodeTexBase. */
node_from->storage != nullptr && node_prev->storage != nullptr)
{
memcpy(node_from->storage, node_prev->storage, sizeof(NodeTexBase));
}
/* remove node */
node_remove_linked(bmain, ntree, node_prev);
}
BKE_ntree_update_tag_node_property(ntree, node_from);
BKE_ntree_update_tag_node_property(ntree, node_to);
BKE_main_ensure_invariants(*bmain, ntree->id);
}
/****************************** Node Link Menu *******************************/
// #define UI_NODE_LINK_ADD 0
#define UI_NODE_LINK_DISCONNECT -1
#define UI_NODE_LINK_REMOVE -2
struct NodeLinkArg {
Main *bmain;
Scene *scene;
bNodeTree *ntree;
bNode *node;
bNodeSocket *sock;
bke::bNodeType *node_type;
NodeLinkItem item;
uiLayout *layout;
};
static Vector<NodeLinkItem> ui_node_link_items(NodeLinkArg *arg,
int in_out,
std::optional<NodeDeclaration> &r_node_decl)
{
Vector<NodeLinkItem> items;
if (arg->node_type->type_legacy == NODE_GROUP) {
LISTBASE_FOREACH (bNodeTree *, ngroup, &arg->bmain->nodetrees) {
if (BKE_id_name(ngroup->id)[0] == '.') {
/* Don't display hidden node groups, just like the add menu. */
continue;
}
const char *disabled_hint;
if ((ngroup->type != arg->ntree->type) ||
!bke::node_group_poll(arg->ntree, ngroup, &disabled_hint))
{
continue;
}
ngroup->ensure_interface_cache();
Span<bNodeTreeInterfaceSocket *> iosockets = (in_out == SOCK_IN ?
ngroup->interface_inputs() :
ngroup->interface_outputs());
for (const int index : iosockets.index_range()) {
bNodeTreeInterfaceSocket *iosock = iosockets[index];
NodeLinkItem item;
node_link_item_init(item);
item.socket_index = index;
/* NOTE: int stemp->type is not fully reliable, not used for node group
* interface sockets. use the typeinfo->type instead.
*/
const bke::bNodeSocketType *typeinfo = iosock->socket_typeinfo();
item.socket_type = typeinfo->type;
item.socket_name = iosock->name;
item.node_name = ngroup->id.name + 2;
item.ngroup = ngroup;
items.append(item);
}
}
}
else if (arg->node_type->declare != nullptr) {
using namespace blender;
using namespace blender::nodes;
r_node_decl.emplace(NodeDeclaration());
blender::nodes::build_node_declaration(*arg->node_type, *r_node_decl, nullptr, nullptr);
Span<SocketDeclaration *> socket_decls = (in_out == SOCK_IN) ? r_node_decl->inputs :
r_node_decl->outputs;
int index = 0;
for (const SocketDeclaration *socket_decl_ptr : socket_decls) {
const SocketDeclaration &socket_decl = *socket_decl_ptr;
NodeLinkItem item;
node_link_item_init(item);
item.socket_index = index++;
item.socket_type = socket_decl.socket_type;
item.socket_name = socket_decl.name.c_str();
item.node_name = arg->node_type->ui_name.c_str();
items.append(item);
}
}
else {
bke::bNodeSocketTemplate *socket_templates = (in_out == SOCK_IN ? arg->node_type->inputs :
arg->node_type->outputs);
bke::bNodeSocketTemplate *stemp;
int i;
i = 0;
for (stemp = socket_templates; stemp && stemp->type != -1; stemp++, i++) {
NodeLinkItem item;
node_link_item_init(item);
item.socket_index = i;
item.socket_type = stemp->type;
item.socket_name = stemp->name;
item.node_name = arg->node_type->ui_name.c_str();
items.append(item);
}
}
return items;
}
static void ui_node_link(bContext *C, void *arg_p, void *event_p)
{
NodeLinkArg *arg = (NodeLinkArg *)arg_p;
Main *bmain = arg->bmain;
bNode *node_to = arg->node;
bNodeSocket *sock_to = arg->sock;
bNodeTree *ntree = arg->ntree;
int event = POINTER_AS_INT(event_p);
if (event == UI_NODE_LINK_DISCONNECT) {
node_socket_disconnect(bmain, ntree, node_to, sock_to);
}
else if (event == UI_NODE_LINK_REMOVE) {
node_socket_remove(bmain, ntree, node_to, sock_to);
}
else {
node_socket_add_replace(C, ntree, node_to, sock_to, arg->node_type->type_legacy, &arg->item);
}
ED_undo_push(C, "Node input modify");
}
static void ui_node_sock_name(const bNodeTree *ntree,
bNodeSocket *sock,
char name[UI_MAX_NAME_STR])
{
if (sock->link && sock->link->fromnode) {
bNode *node = sock->link->fromnode;
const std::string node_name = bke::node_label(*ntree, *node);
if (BLI_listbase_is_empty(&node->inputs) && node->outputs.first != node->outputs.last) {
BLI_snprintf(name,
UI_MAX_NAME_STR,
"%s | %s",
IFACE_(node_name.c_str()),
IFACE_(sock->link->fromsock->name));
}
else {
BLI_strncpy_utf8(name, IFACE_(node_name.c_str()), UI_MAX_NAME_STR);
}
}
else if (sock->type == SOCK_SHADER) {
BLI_strncpy_utf8(name, IFACE_("None"), UI_MAX_NAME_STR);
}
else {
BLI_strncpy_utf8(name, IFACE_("Default"), UI_MAX_NAME_STR);
}
}
static int ui_compatible_sockets(int typeA, int typeB)
{
return (typeA == typeB);
}
static int ui_node_item_name_compare(const void *a, const void *b)
{
const bke::bNodeType *type_a = *(const bke::bNodeType **)a;
const bke::bNodeType *type_b = *(const bke::bNodeType **)b;
return BLI_strcasecmp_natural(type_a->ui_name.c_str(), type_b->ui_name.c_str());
}
static bool ui_node_item_special_poll(const bNodeTree * /*ntree*/, const bke::bNodeType *ntype)
{
if (ntype->idname == "ShaderNodeUVAlongStroke") {
/* TODO(sergey): Currently we don't have Freestyle nodes edited from
* the buttons context, so can ignore its nodes completely.
*
* However, we might want to do some extra checks here later.
*/
return false;
}
return true;
}
static void ui_node_menu_column(NodeLinkArg *arg, int nclass, const char *cname)
{
bNodeTree *ntree = arg->ntree;
bNodeSocket *sock = arg->sock;
uiLayout *layout = arg->layout;
uiLayout *column = nullptr;
uiBlock *block = uiLayoutGetBlock(layout);
uiBut *but;
NodeLinkArg *argN;
int first = 1;
/* generate array of node types sorted by UI name */
blender::Vector<bke::bNodeType *> sorted_ntypes;
for (blender::bke::bNodeType *ntype : blender::bke::node_types_get()) {
const char *disabled_hint;
if (!(ntype->poll && ntype->poll(ntype, ntree, &disabled_hint))) {
continue;
}
if (ntype->nclass != nclass) {
continue;
}
if (!ui_node_item_special_poll(ntree, ntype)) {
continue;
}
sorted_ntypes.append(ntype);
}
qsort(sorted_ntypes.data(),
sorted_ntypes.size(),
sizeof(bke::bNodeType *),
ui_node_item_name_compare);
/* generate UI */
for (int j = 0; j < sorted_ntypes.size(); j++) {
bke::bNodeType *ntype = sorted_ntypes[j];
char name[UI_MAX_NAME_STR];
const char *cur_node_name = nullptr;
int num = 0;
int icon = ICON_NONE;
arg->node_type = ntype;
std::optional<blender::nodes::NodeDeclaration> node_decl;
Vector<NodeLinkItem> items = ui_node_link_items(arg, SOCK_OUT, node_decl);
for (const NodeLinkItem &item : items) {
if (ui_compatible_sockets(item.socket_type, sock->type)) {
num++;
}
}
for (const NodeLinkItem &item : items) {
if (!ui_compatible_sockets(item.socket_type, sock->type)) {
continue;
}
if (first) {
column = &layout->column(false);
UI_block_layout_set_current(block, column);
column->label(IFACE_(cname), ICON_NODE);
but = block->buttons.last().get();
first = 0;
}
if (num > 1) {
if (!cur_node_name || !STREQ(cur_node_name, item.node_name)) {
cur_node_name = item.node_name;
/* XXX Do not use uiLayout::label here,
* it would add an empty icon as we are in a menu! */
uiDefBut(block,
UI_BTYPE_LABEL,
0,
IFACE_(cur_node_name),
0,
0,
UI_UNIT_X * 4,
UI_UNIT_Y,
nullptr,
0.0,
0.0,
"");
}
SNPRINTF(name, "%s", IFACE_(item.socket_name));
icon = ICON_BLANK1;
}
else {
STRNCPY_UTF8(name, IFACE_(item.node_name));
icon = ICON_NONE;
}
but = uiDefIconTextBut(block,
UI_BTYPE_BUT,
0,
icon,
name,
0,
0,
UI_UNIT_X * 4,
UI_UNIT_Y,
nullptr,
0.0,
0.0,
TIP_("Add node to input"));
argN = (NodeLinkArg *)MEM_dupallocN(arg);
argN->item = item;
UI_but_funcN_set(but, ui_node_link, argN, nullptr);
}
}
}
static void node_menu_column_foreach_cb(void *calldata, int nclass, const StringRefNull name)
{
NodeLinkArg *arg = (NodeLinkArg *)calldata;
if (!ELEM(nclass, NODE_CLASS_GROUP, NODE_CLASS_LAYOUT)) {
ui_node_menu_column(arg, nclass, name.c_str());
}
}
static void ui_template_node_link_menu(bContext *C, uiLayout *layout, void *but_p)
{
Main *bmain = CTX_data_main(C);
Scene *scene = CTX_data_scene(C);
uiBlock *block = uiLayoutGetBlock(layout);
uiBut *but = (uiBut *)but_p;
uiLayout *split, *column;
NodeLinkArg *arg = (NodeLinkArg *)but->func_argN;
bNodeSocket *sock = arg->sock;
bke::bNodeTreeType *ntreetype = arg->ntree->typeinfo;
UI_block_layout_set_current(block, layout);
split = &layout->split(0.0f, false);
arg->bmain = bmain;
arg->scene = scene;
arg->layout = split;
if (ntreetype && ntreetype->foreach_nodeclass) {
ntreetype->foreach_nodeclass(arg, node_menu_column_foreach_cb);
}
column = &split->column(false);
UI_block_layout_set_current(block, column);
if (sock->link) {
column->label(IFACE_("Link"), ICON_NONE);
but = block->buttons.last().get();
but->drawflag = UI_BUT_TEXT_LEFT;
but = uiDefBut(block,
UI_BTYPE_BUT,
0,
CTX_IFACE_(BLT_I18NCONTEXT_OPERATOR_DEFAULT, "Remove"),
0,
0,
UI_UNIT_X * 4,
UI_UNIT_Y,
nullptr,
0.0,
0.0,
TIP_("Remove nodes connected to the input"));
UI_but_funcN_set(but, ui_node_link, MEM_dupallocN(arg), POINTER_FROM_INT(UI_NODE_LINK_REMOVE));
but = uiDefBut(block,
UI_BTYPE_BUT,
0,
IFACE_("Disconnect"),
0,
0,
UI_UNIT_X * 4,
UI_UNIT_Y,
nullptr,
0.0,
0.0,
TIP_("Disconnect nodes connected to the input"));
UI_but_funcN_set(
but, ui_node_link, MEM_dupallocN(arg), POINTER_FROM_INT(UI_NODE_LINK_DISCONNECT));
}
ui_node_menu_column(arg, NODE_CLASS_GROUP, N_("Group"));
}
} // namespace blender::ed::space_node
void uiTemplateNodeLink(
uiLayout *layout, bContext *C, bNodeTree *ntree, bNode *node, bNodeSocket *input)
{
using namespace blender::ed::space_node;
uiBlock *block = uiLayoutGetBlock(layout);
NodeLinkArg *arg;
uiBut *but;
float socket_col[4];
arg = MEM_callocN<NodeLinkArg>("NodeLinkArg");
arg->ntree = ntree;
arg->node = node;
arg->sock = input;
node_link_item_init(arg->item);
PointerRNA node_ptr = RNA_pointer_create_discrete(&ntree->id, &RNA_Node, node);
node_socket_color_get(*C, *ntree, node_ptr, *input, socket_col);
UI_block_layout_set_current(block, layout);
if (input->link || input->type == SOCK_SHADER || (input->flag & SOCK_HIDE_VALUE)) {
char name[UI_MAX_NAME_STR];
ui_node_sock_name(ntree, input, name);
but = uiDefMenuBut(
block, ui_template_node_link_menu, nullptr, name, 0, 0, UI_UNIT_X * 4, UI_UNIT_Y, "");
}
else {
but = uiDefIconMenuBut(
block, ui_template_node_link_menu, nullptr, ICON_NONE, 0, 0, UI_UNIT_X, UI_UNIT_Y, "");
}
UI_but_type_set_menu_from_pulldown(but);
UI_but_node_link_set(but, input, socket_col);
UI_but_drawflag_enable(but, UI_BUT_ICON_LEFT);
but->poin = (char *)but;
but->func_argN = arg;
but->func_argN_free_fn = MEM_freeN;
but->func_argN_copy_fn = MEM_dupallocN;
if (input->link && input->link->fromnode) {
if (input->link->fromnode->flag & NODE_ACTIVE_TEXTURE) {
but->flag |= UI_BUT_NODE_ACTIVE;
}
}
}
namespace blender::ed::space_node {
/**************************** Node Tree Layout *******************************/
static void ui_node_draw_input(uiLayout &layout,
bContext &C,
bNodeTree &ntree,
bNode &node,
bNodeSocket &input,
int depth,
const char *panel_label);
static void ui_node_draw_recursive(uiLayout &layout,
bContext &C,
bNodeTree &ntree,
bNode &node,
const nodes::PanelDeclaration &panel_decl,
const int depth)
{
const nodes::SocketDeclaration *panel_toggle_decl = panel_decl.panel_input_decl();
const std::string panel_id = fmt::format(
"{}_{}_{}", ntree.id.name, node.identifier, panel_decl.identifier);
const StringRef panel_translation_context = panel_decl.translation_context.has_value() ?
*panel_decl.translation_context :
"";
PanelLayout panel_layout = layout.panel(&C, panel_id.c_str(), panel_decl.default_collapsed);
if (panel_toggle_decl) {
uiLayoutSetPropSep(panel_layout.header, false);
uiLayoutSetPropDecorate(panel_layout.header, false);
PointerRNA toggle_ptr = RNA_pointer_create_discrete(
&ntree.id, &RNA_NodeSocket, &node.socket_by_decl(*panel_toggle_decl));
panel_layout.header->prop(&toggle_ptr,
"default_value",
UI_ITEM_NONE,
CTX_IFACE_(panel_translation_context, panel_decl.name),
ICON_NONE);
}
else {
panel_layout.header->label(CTX_IFACE_(panel_translation_context, panel_decl.name), ICON_NONE);
}
if (!panel_layout.body) {
return;
}
for (const nodes::ItemDeclaration *item_decl : panel_decl.items) {
if (item_decl == panel_toggle_decl) {
continue;
}
if (const auto *socket_decl = dynamic_cast<const nodes::SocketDeclaration *>(item_decl)) {
if (socket_decl->in_out == SOCK_IN) {
ui_node_draw_input(*panel_layout.body,
C,
ntree,
node,
node.socket_by_decl(*socket_decl),
depth,
panel_decl.name.c_str());
}
}
else if (const auto *sub_panel_decl = dynamic_cast<const nodes::PanelDeclaration *>(item_decl))
{
ui_node_draw_recursive(*panel_layout.body, C, ntree, node, *sub_panel_decl, depth + 1);
}
else if (const auto *layout_decl = dynamic_cast<const nodes::LayoutDeclaration *>(item_decl)) {
PointerRNA nodeptr = RNA_pointer_create_discrete(&ntree.id, &RNA_Node, &node);
layout_decl->draw(panel_layout.body, &C, &nodeptr);
}
}
}
static void ui_node_draw_node(
uiLayout &layout, bContext &C, bNodeTree &ntree, bNode &node, int depth)
{
PointerRNA nodeptr = RNA_pointer_create_discrete(&ntree.id, &RNA_Node, &node);
if (node.declaration() && node.declaration()->use_custom_socket_order) {
const nodes::NodeDeclaration &node_decl = *node.declaration();
for (const nodes::ItemDeclaration *item_decl : node_decl.root_items) {
if (const auto *panel_decl = dynamic_cast<const nodes::PanelDeclaration *>(item_decl)) {
ui_node_draw_recursive(layout, C, ntree, node, *panel_decl, depth + 1);
}
else if (const auto *socket_decl = dynamic_cast<const nodes::SocketDeclaration *>(item_decl))
{
if (socket_decl->in_out == SOCK_IN) {
ui_node_draw_input(
layout, C, ntree, node, node.socket_by_decl(*socket_decl), depth + 1, nullptr);
}
}
}
}
else {
if (node.typeinfo->draw_buttons) {
if (node.type_legacy != NODE_GROUP) {
uiLayoutSetPropSep(&layout, true);
node.typeinfo->draw_buttons(&layout, &C, &nodeptr);
}
}
LISTBASE_FOREACH (bNodeSocket *, input, &node.inputs) {
ui_node_draw_input(layout, C, ntree, node, *input, depth + 1, nullptr);
}
}
}
static void ui_node_draw_input(uiLayout &layout,
bContext &C,
bNodeTree &ntree,
bNode &node,
bNodeSocket &input,
int depth,
const char *panel_label)
{
uiBlock *block = uiLayoutGetBlock(&layout);
uiLayout *row = nullptr;
bool dependency_loop;
if (input.flag & SOCK_UNAVAIL) {
return;
}
/* to avoid eternal loops on cyclic dependencies */
node.flag |= NODE_TEST;
bNode *lnode = (input.link) ? input.link->fromnode : nullptr;
dependency_loop = (lnode && (lnode->flag & NODE_TEST));
if (dependency_loop) {
lnode = nullptr;
}
/* socket RNA pointer */
PointerRNA inputptr = RNA_pointer_create_discrete(&ntree.id, &RNA_NodeSocket, &input);
PointerRNA nodeptr = RNA_pointer_create_discrete(&ntree.id, &RNA_Node, &node);
row = &layout.row(true);
uiPropertySplitWrapper split_wrapper = uiItemPropertySplitWrapperCreate(row);
/* Decorations are added manually here. */
uiLayoutSetPropDecorate(row, false);
/* Empty decorator item for alignment. */
bool add_dummy_decorator = false;
{
uiLayout *sub = &split_wrapper.label_column->row(true);
if (depth > 0) {
UI_block_emboss_set(block, blender::ui::EmbossType::None);
if (lnode && (lnode->inputs.first ||
(lnode->typeinfo->draw_buttons && lnode->type_legacy != NODE_GROUP)))
{
int icon = (input.flag & SOCK_COLLAPSED) ? ICON_RIGHTARROW : ICON_DOWNARROW_HLT;
sub->prop(&inputptr, "show_expanded", UI_ITEM_R_ICON_ONLY, "", icon);
}
UI_block_emboss_set(block, blender::ui::EmbossType::Emboss);
}
sub = &sub->row(true);
uiLayoutSetAlignment(sub, UI_LAYOUT_ALIGN_RIGHT);
sub->label(node_socket_get_label(&input, panel_label), ICON_NONE);
}
if (dependency_loop) {
row->label(RPT_("Dependency Loop"), ICON_ERROR);
add_dummy_decorator = true;
}
else if (lnode) {
/* input linked to a node */
uiTemplateNodeLink(row, &C, &ntree, &node, &input);
add_dummy_decorator = true;
if (depth == 0 || !(input.flag & SOCK_COLLAPSED)) {
if (depth == 0) {
layout.separator();
}
ui_node_draw_node(layout, C, ntree, *lnode, depth);
}
}
else {
uiLayout *sub = &row->row(true);
uiTemplateNodeLink(sub, &C, &ntree, &node, &input);
if (input.flag & SOCK_HIDE_VALUE) {
add_dummy_decorator = true;
}
/* input not linked, show value */
else {
switch (input.type) {
case SOCK_VECTOR:
sub->separator();
sub = &sub->column(true);
ATTR_FALLTHROUGH;
case SOCK_FLOAT:
case SOCK_INT:
case SOCK_ROTATION:
case SOCK_BOOLEAN:
case SOCK_RGBA:
sub->prop(&inputptr, "default_value", UI_ITEM_NONE, "", ICON_NONE);
if (split_wrapper.decorate_column) {
uiItemDecoratorR(
split_wrapper.decorate_column, &inputptr, "default_value", RNA_NO_INDEX);
}
break;
case SOCK_STRING: {
const bNodeTree *node_tree = (const bNodeTree *)nodeptr.owner_id;
SpaceNode *snode = CTX_wm_space_node(&C);
if (node_tree->type == NTREE_GEOMETRY && snode != nullptr) {
/* Only add the attribute search in the node editor, in other places there is not
* enough context. */
node_geometry_add_attribute_search_button(C, node, inputptr, *sub);
}
else {
sub->prop(&inputptr, "default_value", UI_ITEM_NONE, "", ICON_NONE);
}
if (split_wrapper.decorate_column) {
uiItemDecoratorR(
split_wrapper.decorate_column, &inputptr, "default_value", RNA_NO_INDEX);
}
break;
}
case SOCK_MENU:
sub->label(RPT_("Unsupported Menu Socket"), ICON_NONE);
break;
case SOCK_CUSTOM:
input.typeinfo->draw(&C, sub, &inputptr, &nodeptr, input.name);
break;
default:
add_dummy_decorator = true;
}
}
}
if (add_dummy_decorator && split_wrapper.decorate_column) {
uiItemDecoratorR(split_wrapper.decorate_column, nullptr, std::nullopt, 0);
}
node_socket_add_tooltip(ntree, input, *row);
/* clear */
node.flag &= ~NODE_TEST;
}
} // namespace blender::ed::space_node
void uiTemplateNodeView(
uiLayout *layout, bContext *C, bNodeTree *ntree, bNode *node, bNodeSocket *input)
{
using namespace blender::ed::space_node;
if (!ntree) {
return;
}
ntree->ensure_topology_cache();
/* clear for cycle check */
for (bNode *tnode : ntree->all_nodes()) {
tnode->flag &= ~NODE_TEST;
}
if (input) {
ui_node_draw_input(*layout, *C, *ntree, *node, *input, 0, nullptr);
}
else {
ui_node_draw_node(*layout, *C, *ntree, *node, 0);
}
}
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