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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): David Millan Escriva, Juho Vepsäläinen, Nathan Letwory
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/space_node/node_relationships.c
* \ingroup spnode
*/
#include <errno.h>
#include "DNA_node_types.h"
#include "BLI_math.h"
#include "BKE_context.h"
#include "BKE_image.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_node.h"
#include "BKE_report.h"
#include "ED_node.h" /* own include */
#include "ED_screen.h"
#include "ED_render.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "RNA_enum_types.h"
#include "WM_api.h"
#include "WM_types.h"
#include "UI_view2d.h"
#include "node_intern.h" /* own include */
/* can be called from menus too, but they should do own undopush and redraws */
bNode *node_add_node(SpaceNode *snode, Main *bmain, Scene *scene,
bNodeTemplate *ntemp, float locx, float locy)
{
bNode *node = NULL, *gnode;
node_deselect_all(snode);
node = nodeAddNode(snode->edittree, ntemp);
/* generics */
if (node) {
node_select(node);
gnode = node_tree_get_editgroup(snode->nodetree);
// arbitrary y offset of 60 so its visible
if (gnode) {
nodeFromView(gnode, locx, locy + 60.0f, &node->locx, &node->locy);
}
else {
node->locx = locx;
node->locy = locy + 60.0f;
}
ntreeUpdateTree(snode->edittree);
ED_node_set_active(bmain, snode->edittree, node);
if (snode->nodetree->type == NTREE_COMPOSIT) {
if (ELEM4(node->type, CMP_NODE_R_LAYERS, CMP_NODE_COMPOSITE, CMP_NODE_DEFOCUS, CMP_NODE_OUTPUT_FILE)) {
node->id = &scene->id;
}
else if (ELEM3(node->type, CMP_NODE_MOVIECLIP, CMP_NODE_MOVIEDISTORTION, CMP_NODE_STABILIZE2D)) {
node->id = (ID *)scene->clip;
}
ntreeCompositForceHidden(snode->edittree, scene);
}
if (node->id)
id_us_plus(node->id);
if (snode->flag & SNODE_USE_HIDDEN_PREVIEW)
node->flag &= ~NODE_PREVIEW;
snode_update(snode, node);
}
if (snode->nodetree->type == NTREE_TEXTURE) {
ntreeTexCheckCyclics(snode->edittree);
}
return node;
}
/* ********************** Add reroute operator ***************** */
static int add_reroute_intersect_check(bNodeLink *link, float mcoords[][2], int tot, float result[2])
{
float coord_array[NODE_LINK_RESOL + 1][2];
int i, b;
if (node_link_bezier_points(NULL, NULL, link, coord_array, NODE_LINK_RESOL)) {
for (i = 0; i < tot - 1; i++)
for (b = 0; b < NODE_LINK_RESOL; b++)
if (isect_line_line_v2(mcoords[i], mcoords[i + 1], coord_array[b], coord_array[b + 1]) > 0) {
result[0] = (mcoords[i][0] + mcoords[i + 1][0]) / 2.0f;
result[1] = (mcoords[i][1] + mcoords[i + 1][1]) / 2.0f;
return 1;
}
}
return 0;
}
static int add_reroute_exec(bContext *C, wmOperator *op)
{
SpaceNode *snode = CTX_wm_space_node(C);
ARegion *ar = CTX_wm_region(C);
bNode *gnode = node_tree_get_editgroup(snode->nodetree);
float mcoords[256][2];
int i = 0;
RNA_BEGIN(op->ptr, itemptr, "path")
{
float loc[2];
RNA_float_get_array(&itemptr, "loc", loc);
UI_view2d_region_to_view(&ar->v2d, (short)loc[0], (short)loc[1],
&mcoords[i][0], &mcoords[i][1]);
i++;
if (i >= 256) break;
}
RNA_END;
if (i > 1) {
bNodeLink *link;
float insertPoint[2];
for (link = snode->edittree->links.first; link; link = link->next) {
if (add_reroute_intersect_check(link, mcoords, i, insertPoint)) {
bNodeTemplate ntemp;
bNode *rerouteNode;
/* always first */
ED_preview_kill_jobs(C);
node_deselect_all(snode);
ntemp.type = NODE_REROUTE;
rerouteNode = nodeAddNode(snode->edittree, &ntemp);
if (gnode) {
nodeFromView(gnode, insertPoint[0], insertPoint[1], &rerouteNode->locx, &rerouteNode->locy);
}
else {
rerouteNode->locx = insertPoint[0];
rerouteNode->locy = insertPoint[1];
}
nodeAddLink(snode->edittree, link->fromnode, link->fromsock, rerouteNode, rerouteNode->inputs.first);
link->fromnode = rerouteNode;
link->fromsock = rerouteNode->outputs.first;
/* always last */
ntreeUpdateTree(snode->edittree);
snode_notify(C, snode);
snode_dag_update(C, snode);
return OPERATOR_FINISHED; // add one reroute at the time.
}
}
return OPERATOR_CANCELLED;
}
return OPERATOR_CANCELLED | OPERATOR_PASS_THROUGH;
}
void NODE_OT_add_reroute(wmOperatorType *ot)
{
PropertyRNA *prop;
ot->name = "Add reroute";
ot->idname = "NODE_OT_add_reroute";
ot->invoke = WM_gesture_lines_invoke;
ot->modal = WM_gesture_lines_modal;
ot->exec = add_reroute_exec;
ot->cancel = WM_gesture_lines_cancel;
ot->poll = ED_operator_node_active;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
prop = RNA_def_property(ot->srna, "path", PROP_COLLECTION, PROP_NONE);
RNA_def_property_struct_runtime(prop, &RNA_OperatorMousePath);
/* internal */
RNA_def_int(ot->srna, "cursor", BC_CROSSCURSOR, 0, INT_MAX, "Cursor", "", 0, INT_MAX);
}
/* ****************** Add File Node Operator ******************* */
static int node_add_file_exec(bContext *C, wmOperator *op)
{
Main *bmain = CTX_data_main(C);
Scene *scene = CTX_data_scene(C);
SpaceNode *snode = CTX_wm_space_node(C);
bNode *node;
Image *ima = NULL;
bNodeTemplate ntemp;
/* check input variables */
if (RNA_struct_property_is_set(op->ptr, "filepath")) {
char path[FILE_MAX];
RNA_string_get(op->ptr, "filepath", path);
errno = 0;
ima = BKE_image_load_exists(path);
if (!ima) {
BKE_reportf(op->reports, RPT_ERROR, "Can't read image: \"%s\", %s", path, errno ? strerror(errno) : "Unsupported format");
return OPERATOR_CANCELLED;
}
}
else if (RNA_struct_property_is_set(op->ptr, "name")) {
char name[MAX_ID_NAME - 2];
RNA_string_get(op->ptr, "name", name);
ima = (Image *)BKE_libblock_find_name(ID_IM, name);
if (!ima) {
BKE_reportf(op->reports, RPT_ERROR, "Image named \"%s\", not found", name);
return OPERATOR_CANCELLED;
}
}
node_deselect_all(snode);
switch (snode->nodetree->type) {
case NTREE_SHADER:
ntemp.type = SH_NODE_TEX_IMAGE;
break;
case NTREE_TEXTURE:
ntemp.type = TEX_NODE_IMAGE;
break;
case NTREE_COMPOSIT:
ntemp.type = CMP_NODE_IMAGE;
break;
default:
return OPERATOR_CANCELLED;
}
ED_preview_kill_jobs(C);
node = node_add_node(snode, bmain, scene, &ntemp, snode->mx, snode->my);
if (!node) {
BKE_report(op->reports, RPT_WARNING, "Could not add an image node");
return OPERATOR_CANCELLED;
}
node->id = (ID *)ima;
id_us_plus(node->id);
snode_notify(C, snode);
snode_dag_update(C, snode);
return OPERATOR_FINISHED;
}
static int node_add_file_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
ARegion *ar = CTX_wm_region(C);
SpaceNode *snode = CTX_wm_space_node(C);
/* convert mouse coordinates to v2d space */
UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1],
&snode->mx, &snode->my);
if (RNA_struct_property_is_set(op->ptr, "filepath") || RNA_struct_property_is_set(op->ptr, "name"))
return node_add_file_exec(C, op);
else
return WM_operator_filesel(C, op, event);
}
void NODE_OT_add_file(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Add File Node";
ot->description = "Add a file node to the current node editor";
ot->idname = "NODE_OT_add_file";
/* callbacks */
ot->exec = node_add_file_exec;
ot->invoke = node_add_file_invoke;
ot->poll = ED_operator_node_active;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
WM_operator_properties_filesel(ot, FOLDERFILE | IMAGEFILE, FILE_SPECIAL, FILE_OPENFILE, WM_FILESEL_FILEPATH, FILE_DEFAULTDISPLAY); //XXX TODO, relative_path
RNA_def_string(ot->srna, "name", "Image", MAX_ID_NAME - 2, "Name", "Datablock name to assign");
}
/********************** New node tree operator *********************/
static int new_node_tree_exec(bContext *C, wmOperator *op)
{
SpaceNode *snode;
bNodeTree *ntree;
PointerRNA ptr, idptr;
PropertyRNA *prop;
int treetype;
char treename[MAX_ID_NAME - 2] = "NodeTree";
/* retrieve state */
snode = CTX_wm_space_node(C);
if (RNA_struct_property_is_set(op->ptr, "type"))
treetype = RNA_enum_get(op->ptr, "type");
else
treetype = snode->treetype;
if (RNA_struct_property_is_set(op->ptr, "name"))
RNA_string_get(op->ptr, "name", treename);
ntree = ntreeAddTree(treename, treetype, 0);
if (!ntree)
return OPERATOR_CANCELLED;
/* hook into UI */
uiIDContextProperty(C, &ptr, &prop);
if (prop) {
RNA_id_pointer_create(&ntree->id, &idptr);
RNA_property_pointer_set(&ptr, prop, idptr);
/* RNA_property_pointer_set increases the user count,
* fixed here as the editor is the initial user.
*/
--ntree->id.us;
RNA_property_update(C, &ptr, prop);
}
else if (snode) {
Scene *scene = CTX_data_scene(C);
snode->nodetree = ntree;
ED_node_tree_update(snode, scene);
}
return OPERATOR_FINISHED;
}
void NODE_OT_new_node_tree(wmOperatorType *ot)
{
/* identifiers */
ot->name = "New Node Tree";
ot->idname = "NODE_OT_new_node_tree";
ot->description = "Create a new node tree";
/* api callbacks */
ot->exec = new_node_tree_exec;
ot->poll = ED_operator_node_active;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
RNA_def_enum(ot->srna, "type", nodetree_type_items, NTREE_COMPOSIT, "Tree Type", "");
RNA_def_string(ot->srna, "name", "NodeTree", MAX_ID_NAME - 2, "Name", "");
}
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