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blender-archive/source/blender/editors/space_node/node_draw.c

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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) 2008 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
* Contributor(s): Nathan Letwory
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/space_node/node_draw.c
* \ingroup spnode
*/
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "DNA_node_types.h"
#include "DNA_lamp_types.h"
#include "DNA_material_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_space_types.h"
#include "DNA_screen_types.h"
#include "DNA_world_types.h"
#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_threads.h"
#include "BLI_utildefines.h"
#include "BKE_context.h"
#include "BKE_depsgraph.h"
#include "BKE_main.h"
#include "BKE_node.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_node.h"
#include "ED_gpencil.h"
#include "UI_interface.h"
#include "UI_interface_icons.h"
#include "UI_resources.h"
#include "UI_view2d.h"
#include "RNA_access.h"
#include "NOD_composite.h"
#include "NOD_shader.h"
#include "intern/node_util.h"
#include "node_intern.h"
/* width of socket columns in group display */
#define NODE_GROUP_FRAME 120
// XXX interface.h
extern void ui_dropshadow(rctf *rct, float radius, float aspect, int select);
/* XXX update functions for node editor are a mess, needs a clear concept */
void ED_node_tree_update(SpaceNode *snode, Scene *scene)
{
snode_set_context(snode, scene);
if(snode->nodetree && snode->nodetree->id.us==0)
snode->nodetree->id.us= 1;
}
void ED_node_changed_update(ID *id, bNode *node)
{
bNodeTree *nodetree, *edittree;
int treetype;
node_tree_from_ID(id, &nodetree, &edittree, &treetype);
if(treetype==NTREE_SHADER) {
DAG_id_tag_update(id, 0);
if(GS(id->name) == ID_MA)
WM_main_add_notifier(NC_MATERIAL|ND_SHADING_DRAW, id);
else if(GS(id->name) == ID_LA)
WM_main_add_notifier(NC_LAMP|ND_LIGHTING_DRAW, id);
else if(GS(id->name) == ID_WO)
WM_main_add_notifier(NC_WORLD|ND_WORLD_DRAW, id);
}
else if(treetype==NTREE_COMPOSIT) {
if(node)
nodeUpdate(edittree, node);
/* don't use NodeTagIDChanged, it gives far too many recomposites for image, scene layers, ... */
node= node_tree_get_editgroup(nodetree);
if(node)
nodeUpdateID(nodetree, node->id);
WM_main_add_notifier(NC_SCENE|ND_NODES, id);
}
else if(treetype==NTREE_TEXTURE) {
DAG_id_tag_update(id, 0);
WM_main_add_notifier(NC_TEXTURE|ND_NODES, id);
}
}
static int has_nodetree(bNodeTree *ntree, bNodeTree *lookup)
{
bNode *node;
if(ntree == lookup)
return 1;
for(node=ntree->nodes.first; node; node=node->next)
if(node->type == NODE_GROUP && node->id)
if(has_nodetree((bNodeTree*)node->id, lookup))
return 1;
return 0;
}
typedef struct NodeUpdateCalldata {
bNodeTree *ntree;
bNode *node;
} NodeUpdateCalldata;
static void node_generic_update_cb(void *calldata, ID *owner_id, bNodeTree *ntree)
{
NodeUpdateCalldata *cd= (NodeUpdateCalldata*)calldata;
/* check if nodetree uses the group stored in calldata */
if (has_nodetree(ntree, cd->ntree))
ED_node_changed_update(owner_id, cd->node);
}
void ED_node_generic_update(Main *bmain, bNodeTree *ntree, bNode *node)
{
bNodeTreeType *tti= ntreeGetType(ntree->type);
NodeUpdateCalldata cd;
cd.ntree = ntree;
cd.node = node;
/* look through all datablocks, to support groups */
tti->foreach_nodetree(bmain, &cd, node_generic_update_cb);
if(ntree->type == NTREE_TEXTURE)
ntreeTexCheckCyclics(ntree);
}
static void do_node_internal_buttons(bContext *C, void *node_v, int event)
{
if(event==B_NODE_EXEC) {
SpaceNode *snode= CTX_wm_space_node(C);
if(snode && snode->id)
ED_node_changed_update(snode->id, node_v);
}
}
static void node_scaling_widget(int color_id, float aspect, float xmin, float ymin, float xmax, float ymax)
{
float dx;
float dy;
dx= 0.5f*(xmax-xmin);
dy= 0.5f*(ymax-ymin);
UI_ThemeColorShade(color_id, +30);
fdrawline(xmin, ymin, xmax, ymax);
fdrawline(xmin+dx, ymin, xmax, ymax-dy);
UI_ThemeColorShade(color_id, -10);
fdrawline(xmin, ymin+aspect, xmax, ymax+aspect);
fdrawline(xmin+dx, ymin+aspect, xmax, ymax-dy+aspect);
}
static void node_uiblocks_init(const bContext *C, bNodeTree *ntree)
{
bNode *node;
char uiblockstr[32];
/* add node uiBlocks in drawing order - prevents events going to overlapping nodes */
for (node= ntree->nodes.first; node; node= node->next) {
/* ui block */
BLI_snprintf(uiblockstr, sizeof(uiblockstr), "node buttons %p", (void *)node);
node->block= uiBeginBlock(C, CTX_wm_region(C), uiblockstr, UI_EMBOSS);
uiBlockSetHandleFunc(node->block, do_node_internal_buttons, node);
/* this cancels events for background nodes */
uiBlockSetFlag(node->block, UI_BLOCK_CLIP_EVENTS);
}
}
/* based on settings in node, sets drawing rect info. each redraw! */
static void node_update_basis(const bContext *C, bNodeTree *ntree, bNode *node)
{
uiLayout *layout;
PointerRNA ptr;
bNodeSocket *nsock;
float locx, locy;
float dy;
int buty;
/* get "global" coords */
nodeSpaceCoords(node, &locx, &locy);
dy= locy;
/* header */
dy-= NODE_DY;
/* little bit space in top */
if(node->outputs.first)
dy-= NODE_DYS/2;
/* output sockets */
for(nsock= node->outputs.first; nsock; nsock= nsock->next) {
if(!nodeSocketIsHidden(nsock)) {
nsock->locx= locx + node->width;
nsock->locy= dy - NODE_DYS;
dy-= NODE_DY;
}
}
node->prvr.xmin= locx + NODE_DYS;
node->prvr.xmax= locx + node->width- NODE_DYS;
/* preview rect? */
if(node->flag & NODE_PREVIEW) {
/* only recalculate size when there's a preview actually, otherwise we use stored result */
BLI_lock_thread(LOCK_PREVIEW);
if(node->preview && node->preview->rect) {
float aspect= 1.0f;
if(node->preview && node->preview->xsize && node->preview->ysize)
aspect= (float)node->preview->ysize/(float)node->preview->xsize;
dy-= NODE_DYS/2;
node->prvr.ymax= dy;
if(aspect <= 1.0f)
node->prvr.ymin= dy - aspect*(node->width-NODE_DY);
else {
float dx= (node->width - NODE_DYS) - (node->width- NODE_DYS)/aspect; /* width correction of image */
node->prvr.ymin= dy - (node->width-NODE_DY);
node->prvr.xmin+= 0.5f*dx;
node->prvr.xmax-= 0.5f*dx;
}
dy= node->prvr.ymin - NODE_DYS/2;
/* make sure that maximums are bigger or equal to minimums */
if(node->prvr.xmax < node->prvr.xmin) SWAP(float, node->prvr.xmax, node->prvr.xmin);
if(node->prvr.ymax < node->prvr.ymin) SWAP(float, node->prvr.ymax, node->prvr.ymin);
}
else {
float oldh= node->prvr.ymax - node->prvr.ymin;
if(oldh==0.0f)
oldh= 0.6f*node->width-NODE_DY;
dy-= NODE_DYS/2;
node->prvr.ymax= dy;
node->prvr.ymin= dy - oldh;
dy= node->prvr.ymin - NODE_DYS/2;
}
BLI_unlock_thread(LOCK_PREVIEW);
}
/* buttons rect? */
if((node->flag & NODE_OPTIONS) && node->typeinfo->uifunc) {
dy-= NODE_DYS/2;
/* set this for uifunc() that don't use layout engine yet */
node->butr.xmin= 0;
node->butr.xmax= node->width - 2*NODE_DYS;
node->butr.ymin= 0;
node->butr.ymax= 0;
RNA_pointer_create(&ntree->id, &RNA_Node, node, &ptr);
layout= uiBlockLayout(node->block, UI_LAYOUT_VERTICAL, UI_LAYOUT_PANEL,
locx+NODE_DYS, dy, node->butr.xmax, NODE_DY, UI_GetStyle());
node->typeinfo->uifunc(layout, (bContext *)C, &ptr);
uiBlockEndAlign(node->block);
uiBlockLayoutResolve(node->block, NULL, &buty);
dy= buty - NODE_DYS/2;
}
/* input sockets */
for(nsock= node->inputs.first; nsock; nsock= nsock->next) {
if(!nodeSocketIsHidden(nsock)) {
nsock->locx= locx;
nsock->locy= dy - NODE_DYS;
dy-= NODE_DY;
}
}
/* little bit space in end */
if(node->inputs.first || (node->flag & (NODE_OPTIONS|NODE_PREVIEW))==0 )
dy-= NODE_DYS/2;
node->totr.xmin= locx;
node->totr.xmax= locx + node->width;
node->totr.ymax= locy;
node->totr.ymin= MIN2(dy, locy-2*NODE_DY);
/* Set the block bounds to clip mouse events from underlying nodes.
* Add a margin for sockets on each side.
*/
uiExplicitBoundsBlock(node->block,
node->totr.xmin - NODE_SOCKSIZE,
node->totr.ymin,
node->totr.xmax + NODE_SOCKSIZE,
node->totr.ymax);
}
/* based on settings in node, sets drawing rect info. each redraw! */
static void node_update_hidden(bNode *node)
{
bNodeSocket *nsock;
float locx, locy;
float rad, drad, hiddenrad= HIDDEN_RAD;
int totin=0, totout=0, tot;
/* get "global" coords */
nodeSpaceCoords(node, &locx, &locy);
/* calculate minimal radius */
for(nsock= node->inputs.first; nsock; nsock= nsock->next)
if(!nodeSocketIsHidden(nsock))
totin++;
for(nsock= node->outputs.first; nsock; nsock= nsock->next)
if(!nodeSocketIsHidden(nsock))
totout++;
tot= MAX2(totin, totout);
if(tot>4) {
hiddenrad += 5.0f*(float)(tot-4);
}
node->totr.xmin= locx;
node->totr.xmax= locx + 3*hiddenrad + node->miniwidth;
node->totr.ymax= locy + (hiddenrad - 0.5f*NODE_DY);
node->totr.ymin= node->totr.ymax - 2*hiddenrad;
/* output sockets */
rad=drad= (float)M_PI/(1.0f + (float)totout);
for(nsock= node->outputs.first; nsock; nsock= nsock->next) {
if(!nodeSocketIsHidden(nsock)) {
nsock->locx= node->totr.xmax - hiddenrad + (float)sin(rad)*hiddenrad;
nsock->locy= node->totr.ymin + hiddenrad + (float)cos(rad)*hiddenrad;
rad+= drad;
}
}
/* input sockets */
rad=drad= - (float)M_PI/(1.0f + (float)totin);
for(nsock= node->inputs.first; nsock; nsock= nsock->next) {
if(!nodeSocketIsHidden(nsock)) {
nsock->locx= node->totr.xmin + hiddenrad + (float)sin(rad)*hiddenrad;
nsock->locy= node->totr.ymin + hiddenrad + (float)cos(rad)*hiddenrad;
rad+= drad;
}
}
/* Set the block bounds to clip mouse events from underlying nodes.
* Add a margin for sockets on each side.
*/
uiExplicitBoundsBlock(node->block,
node->totr.xmin - NODE_SOCKSIZE,
node->totr.ymin,
node->totr.xmax + NODE_SOCKSIZE,
node->totr.ymax);
}
void node_update_default(const bContext *C, bNodeTree *ntree, bNode *node)
{
if(node->flag & NODE_HIDDEN)
node_update_hidden(node);
else
node_update_basis(C, ntree, node);
}
static int node_get_colorid(bNode *node)
{
if(node->typeinfo->nclass==NODE_CLASS_INPUT)
return TH_NODE_IN_OUT;
if(node->typeinfo->nclass==NODE_CLASS_OUTPUT) {
if(node->flag & NODE_DO_OUTPUT)
return TH_NODE_IN_OUT;
else
return TH_NODE;
}
if(node->typeinfo->nclass==NODE_CLASS_CONVERTOR)
return TH_NODE_CONVERTOR;
if(ELEM3(node->typeinfo->nclass, NODE_CLASS_OP_COLOR, NODE_CLASS_OP_VECTOR, NODE_CLASS_OP_FILTER))
return TH_NODE_OPERATOR;
if(node->typeinfo->nclass==NODE_CLASS_GROUP)
return TH_NODE_GROUP;
return TH_NODE;
}
/* note: in cmp_util.c is similar code, for node_compo_pass_on()
* the same goes for shader and texture nodes. */
/* note: in node_edit.c is similar code, for untangle node */
static void node_draw_mute_line(View2D *v2d, SpaceNode *snode, bNode *node)
{
ListBase links;
LinkInOutsMuteNode *lnk;
bNodeLink link= {NULL};
int i;
if(node->typeinfo->mutelinksfunc == NULL)
return;
/* Get default muting links (as bNodeSocket pointers). */
links = node->typeinfo->mutelinksfunc(snode->edittree, node, NULL, NULL, NULL, NULL);
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
link.fromnode = link.tonode = node;
for(lnk = links.first; lnk; lnk = lnk->next) {
for(i = 0; i < lnk->num_outs; i++) {
link.fromsock = (bNodeSocket*)(lnk->in);
link.tosock = (bNodeSocket*)(lnk->outs)+i;
node_draw_link_bezier(v2d, snode, &link, TH_REDALERT, 0, TH_WIRE, 0, TH_WIRE);
}
/* If num_outs > 1, lnk->outs was an allocated table of pointers... */
if(i > 1)
MEM_freeN(lnk->outs);
}
glDisable(GL_BLEND);
glDisable(GL_LINE_SMOOTH);
BLI_freelistN(&links);
}
/* this might have some more generic use */
static void node_circle_draw(float x, float y, float size, char *col)
{
/* 16 values of sin function */
static float si[16] = {
0.00000000f, 0.39435585f,0.72479278f,0.93775213f,
0.99871650f,0.89780453f,0.65137248f,0.29936312f,
-0.10116832f,-0.48530196f,-0.79077573f,-0.96807711f,
-0.98846832f,-0.84864425f,-0.57126821f,-0.20129852f
};
/* 16 values of cos function */
static float co[16] ={
1.00000000f,0.91895781f,0.68896691f,0.34730525f,
-0.05064916f,-0.44039415f,-0.75875812f,-0.95413925f,
-0.99486932f,-0.87434661f,-0.61210598f,-0.25065253f,
0.15142777f,0.52896401f,0.82076344f,0.97952994f,
};
int a;
glColor3ub(col[0], col[1], col[2]);
glBegin(GL_POLYGON);
for(a=0; a<16; a++)
glVertex2f(x+size*si[a], y+size*co[a]);
glEnd();
glColor4ub(0, 0, 0, 150);
glEnable(GL_BLEND);
glEnable( GL_LINE_SMOOTH );
glBegin(GL_LINE_LOOP);
for(a=0; a<16; a++)
glVertex2f(x+size*si[a], y+size*co[a]);
glEnd();
glDisable( GL_LINE_SMOOTH );
glDisable(GL_BLEND);
}
void node_socket_circle_draw(bNodeTree *UNUSED(ntree), bNodeSocket *sock, float size)
{
bNodeSocketType *stype = ntreeGetSocketType(sock->type);
node_circle_draw(sock->locx, sock->locy, size, stype->ui_color);
}
/* ************** Socket callbacks *********** */
/* not a callback */
static void node_draw_preview(bNodePreview *preview, rctf *prv)
{
float xscale= (prv->xmax-prv->xmin)/((float)preview->xsize);
float yscale= (prv->ymax-prv->ymin)/((float)preview->ysize);
float tile= (prv->xmax - prv->xmin) / 10.0f;
float x, y;
/* draw checkerboard backdrop to show alpha */
glColor3ub(120, 120, 120);
glRectf(prv->xmin, prv->ymin, prv->xmax, prv->ymax);
glColor3ub(160, 160, 160);
for(y=prv->ymin; y<prv->ymax; y+=tile*2) {
for(x=prv->xmin; x<prv->xmax; x+=tile*2) {
float tilex= tile, tiley= tile;
if(x+tile > prv->xmax)
tilex= prv->xmax-x;
if(y+tile > prv->ymax)
tiley= prv->ymax-y;
glRectf(x, y, x + tilex, y + tiley);
}
}
for(y=prv->ymin+tile; y<prv->ymax; y+=tile*2) {
for(x=prv->xmin+tile; x<prv->xmax; x+=tile*2) {
float tilex= tile, tiley= tile;
if(x+tile > prv->xmax)
tilex= prv->xmax-x;
if(y+tile > prv->ymax)
tiley= prv->ymax-y;
glRectf(x, y, x + tilex, y + tiley);
}
}
glPixelZoom(xscale, yscale);
glEnable(GL_BLEND);
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); /* premul graphics */
glColor4f(1.0, 1.0, 1.0, 1.0);
glaDrawPixelsTex(prv->xmin, prv->ymin, preview->xsize, preview->ysize, GL_UNSIGNED_BYTE, preview->rect);
glDisable(GL_BLEND);
glPixelZoom(1.0f, 1.0f);
UI_ThemeColorShadeAlpha(TH_BACK, -15, +100);
fdrawbox(prv->xmin, prv->ymin, prv->xmax, prv->ymax);
}
/* common handle function for operator buttons that need to select the node first */
static void node_toggle_button_cb(struct bContext *C, void *node_argv, void *op_argv)
{
bNode *node = (bNode*)node_argv;
const char *opname = (const char *)op_argv;
/* select & activate only the button's node */
node_select_single(C, node);
WM_operator_name_call(C, opname, WM_OP_INVOKE_DEFAULT, NULL);
}
static void node_draw_basis(const bContext *C, ARegion *ar, SpaceNode *snode, bNodeTree *ntree, bNode *node)
{
bNodeSocket *sock;
rctf *rct= &node->totr;
float iconofs;
/* float socket_size= NODE_SOCKSIZE*U.dpi/72; */ /* UNUSED */
float iconbutw= 0.8f*UI_UNIT_X;
int color_id= node_get_colorid(node);
char showname[128]; /* 128 used below */
View2D *v2d = &ar->v2d;
/* hurmf... another candidate for callback, have to see how this works first */
if(node->id && node->block && snode->treetype==NTREE_SHADER)
nodeShaderSynchronizeID(node, 0);
/* skip if out of view */
if (node->totr.xmax < ar->v2d.cur.xmin || node->totr.xmin > ar->v2d.cur.xmax ||
node->totr.ymax < ar->v2d.cur.ymin || node->totr.ymin > ar->v2d.cur.ymax) {
uiEndBlock(C, node->block);
node->block= NULL;
return;
}
uiSetRoundBox(UI_CNR_TOP_LEFT | UI_CNR_TOP_RIGHT | UI_CNR_BOTTOM_LEFT);
ui_dropshadow(rct, BASIS_RAD, snode->aspect, node->flag & SELECT);
/* header */
if(color_id==TH_NODE)
UI_ThemeColorShade(color_id, -20);
else
UI_ThemeColor(color_id);
if(node->flag & NODE_MUTED)
UI_ThemeColorBlend(color_id, TH_REDALERT, 0.5f);
uiSetRoundBox(UI_CNR_TOP_LEFT | UI_CNR_TOP_RIGHT);
uiRoundBox(rct->xmin, rct->ymax-NODE_DY, rct->xmax, rct->ymax, BASIS_RAD);
/* show/hide icons */
iconofs= rct->xmax - 7.0f;
/* preview */
if(node->typeinfo->flag & NODE_PREVIEW) {
uiBut *but;
iconofs-=iconbutw;
uiBlockSetEmboss(node->block, UI_EMBOSSN);
but = uiDefIconBut(node->block, TOGBUT, B_REDR, ICON_MATERIAL,
iconofs, rct->ymax-NODE_DY, iconbutw, UI_UNIT_Y, NULL, 0, 0, 0, 0, "");
uiButSetFunc(but, node_toggle_button_cb, node, (void*)"NODE_OT_preview_toggle");
/* XXX this does not work when node is activated and the operator called right afterwards,
* since active ID is not updated yet (needs to process the notifier).
* This can only work as visual indicator!
*/
// if (!(node->flag & (NODE_ACTIVE_ID|NODE_DO_OUTPUT)))
// uiButSetFlag(but, UI_BUT_DISABLED);
uiBlockSetEmboss(node->block, UI_EMBOSS);
}
/* group edit */
if(node->type == NODE_GROUP) {
uiBut *but;
iconofs-=iconbutw;
uiBlockSetEmboss(node->block, UI_EMBOSSN);
but = uiDefIconBut(node->block, TOGBUT, B_REDR, ICON_NODETREE,
iconofs, rct->ymax-NODE_DY, iconbutw, UI_UNIT_Y, NULL, 0, 0, 0, 0, "");
uiButSetFunc(but, node_toggle_button_cb, node, (void*)"NODE_OT_group_edit");
uiBlockSetEmboss(node->block, UI_EMBOSS);
}
/* title */
if(node->flag & SELECT)
UI_ThemeColor(TH_TEXT_HI);
else
UI_ThemeColorBlendShade(TH_TEXT, color_id, 0.4f, 10);
/* open/close entirely? */
{
uiBut *but;
int but_size = UI_UNIT_X *0.6f;
/* XXX button uses a custom triangle draw below, so make it invisible without icon */
uiBlockSetEmboss(node->block, UI_EMBOSSN);
but = uiDefBut(node->block, TOGBUT, B_REDR, "",
rct->xmin+10.0f-but_size/2, rct->ymax-NODE_DY/2.0f-but_size/2, but_size, but_size, NULL, 0, 0, 0, 0, "");
uiButSetFunc(but, node_toggle_button_cb, node, (void*)"NODE_OT_hide_toggle");
uiBlockSetEmboss(node->block, UI_EMBOSS);
/* custom draw function for this button */
UI_DrawTriIcon(rct->xmin+10.0f, rct->ymax-NODE_DY/2.0f, 'v');
}
/* this isn't doing anything for the label, so commenting out
if(node->flag & SELECT)
UI_ThemeColor(TH_TEXT_HI);
else
UI_ThemeColor(TH_TEXT); */
BLI_strncpy(showname, nodeLabel(node), sizeof(showname));
//if(node->flag & NODE_MUTED)
// BLI_snprintf(showname, sizeof(showname), "[%s]", showname); // XXX - dont print into self!
uiDefBut(node->block, LABEL, 0, showname, (short)(rct->xmin+15), (short)(rct->ymax-NODE_DY),
(int)(iconofs - rct->xmin-18.0f), NODE_DY, NULL, 0, 0, 0, 0, "");
/* body */
UI_ThemeColor4(TH_NODE);
glEnable(GL_BLEND);
uiSetRoundBox(UI_CNR_BOTTOM_LEFT);
uiRoundBox(rct->xmin, rct->ymin, rct->xmax, rct->ymax-NODE_DY, BASIS_RAD);
glDisable(GL_BLEND);
/* scaling indicator */
node_scaling_widget(TH_NODE, snode->aspect, rct->xmax-BASIS_RAD*snode->aspect, rct->ymin, rct->xmax, rct->ymin+BASIS_RAD*snode->aspect);
/* outline active and selected emphasis */
if( node->flag & (NODE_ACTIVE|SELECT) ) {
glEnable(GL_BLEND);
glEnable( GL_LINE_SMOOTH );
/* using different shades of TH_TEXT_HI for the empasis, like triangle */
if( node->flag & NODE_ACTIVE )
UI_ThemeColorShadeAlpha(TH_TEXT_HI, 0, -40);
else
UI_ThemeColorShadeAlpha(TH_TEXT_HI, -20, -120);
uiSetRoundBox(UI_CNR_TOP_LEFT | UI_CNR_TOP_RIGHT | UI_CNR_BOTTOM_LEFT); // round all corners except lower right
uiDrawBox(GL_LINE_LOOP, rct->xmin, rct->ymin, rct->xmax, rct->ymax, BASIS_RAD);
glDisable( GL_LINE_SMOOTH );
glDisable(GL_BLEND);
}
/* disable lines */
if(node->flag & NODE_MUTED)
node_draw_mute_line(v2d, snode, node);
/* socket inputs, buttons */
for(sock= node->inputs.first; sock; sock= sock->next) {
bNodeSocketType *stype= ntreeGetSocketType(sock->type);
if(nodeSocketIsHidden(sock))
continue;
node_socket_circle_draw(ntree, sock, NODE_SOCKSIZE);
if (sock->link || (sock->flag & SOCK_HIDE_VALUE)) {
uiDefBut(node->block, LABEL, 0, sock->name, sock->locx+NODE_DYS, sock->locy-NODE_DYS, node->width-NODE_DY, NODE_DY,
NULL, 0, 0, 0, 0, "");
}
else {
if (stype->buttonfunc)
stype->buttonfunc(C, node->block, ntree, node, sock, sock->name, sock->locx+NODE_DYS, sock->locy-NODE_DYS, node->width-NODE_DY);
}
}
/* socket outputs */
for(sock= node->outputs.first; sock; sock= sock->next) {
PointerRNA sockptr;
float slen;
int ofs;
RNA_pointer_create((ID*)ntree, &RNA_NodeSocket, sock, &sockptr);
if(nodeSocketIsHidden(sock))
continue;
node_socket_circle_draw(ntree, sock, NODE_SOCKSIZE);
ofs= 0;
UI_ThemeColor(TH_TEXT);
slen= snode->aspect*UI_GetStringWidth(sock->name);
while(slen > node->width) {
ofs++;
slen= snode->aspect*UI_GetStringWidth(sock->name+ofs);
}
uiDefBut(node->block, LABEL, 0, sock->name+ofs, (short)(sock->locx-15.0f-slen), (short)(sock->locy-9.0f),
(short)(node->width-NODE_DY), NODE_DY, NULL, 0, 0, 0, 0, "");
}
/* preview */
if(node->flag & NODE_PREVIEW) {
BLI_lock_thread(LOCK_PREVIEW);
if(node->preview && node->preview->rect && !BLI_rctf_is_empty(&node->prvr))
node_draw_preview(node->preview, &node->prvr);
BLI_unlock_thread(LOCK_PREVIEW);
}
UI_ThemeClearColor(color_id);
uiEndBlock(C, node->block);
uiDrawBlock(C, node->block);
node->block= NULL;
}
static void node_draw_hidden(const bContext *C, ARegion *ar, SpaceNode *snode, bNode *node)
{
bNodeSocket *sock;
rctf *rct= &node->totr;
float dx, centy= 0.5f*(rct->ymax+rct->ymin);
float hiddenrad= 0.5f*(rct->ymax-rct->ymin);
float socket_size= NODE_SOCKSIZE*U.dpi/72;
int color_id= node_get_colorid(node);
char showname[128]; /* 128 is used below */
/* shadow */
uiSetRoundBox(UI_CNR_ALL);
ui_dropshadow(rct, hiddenrad, snode->aspect, node->flag & SELECT);
/* body */
UI_ThemeColor(color_id);
if(node->flag & NODE_MUTED)
UI_ThemeColorBlend(color_id, TH_REDALERT, 0.5f);
uiRoundBox(rct->xmin, rct->ymin, rct->xmax, rct->ymax, hiddenrad);
/* outline active and selected emphasis */
if( node->flag & (NODE_ACTIVE|SELECT) ) {
glEnable(GL_BLEND);
glEnable( GL_LINE_SMOOTH );
/* using different shades of TH_TEXT_HI for the empasis, like triangle */
if( node->flag & NODE_ACTIVE )
UI_ThemeColorShadeAlpha(TH_TEXT_HI, 0, -40);
else
UI_ThemeColorShadeAlpha(TH_TEXT_HI, -20, -120);
uiDrawBox(GL_LINE_LOOP, rct->xmin, rct->ymin, rct->xmax, rct->ymax, hiddenrad);
glDisable( GL_LINE_SMOOTH );
glDisable(GL_BLEND);
}
/* title */
if(node->flag & SELECT)
UI_ThemeColor(TH_TEXT_HI);
else
UI_ThemeColorBlendShade(TH_TEXT, color_id, 0.4f, 10);
/* open entirely icon */
{
uiBut *but;
int but_size = UI_UNIT_X *0.6f;
/* XXX button uses a custom triangle draw below, so make it invisible without icon */
uiBlockSetEmboss(node->block, UI_EMBOSSN);
but = uiDefBut(node->block, TOGBUT, B_REDR, "",
rct->xmin+10.0f-but_size/2, centy-but_size/2, but_size, but_size, NULL, 0, 0, 0, 0, "");
uiButSetFunc(but, node_toggle_button_cb, node, (void*)"NODE_OT_hide_toggle");
uiBlockSetEmboss(node->block, UI_EMBOSS);
/* custom draw function for this button */
UI_DrawTriIcon(rct->xmin+10.0f, centy, 'h');
}
/* disable lines */
if(node->flag & NODE_MUTED)
node_draw_mute_line(&ar->v2d, snode, node);
if(node->flag & SELECT)
UI_ThemeColor(TH_TEXT_HI);
else
UI_ThemeColor(TH_TEXT);
if(node->miniwidth>0.0f) {
BLI_strncpy(showname, nodeLabel(node), sizeof(showname));
//if(node->flag & NODE_MUTED)
// BLI_snprintf(showname, sizeof(showname), "[%s]", showname); // XXX - dont print into self!
uiDefBut(node->block, LABEL, 0, showname, (short)(rct->xmin+15), (short)(centy-10),
(int)(rct->xmax - rct->xmin-18.0f -12.0f), NODE_DY, NULL, 0, 0, 0, 0, "");
}
/* scale widget thing */
UI_ThemeColorShade(color_id, -10);
dx= 10.0f;
fdrawline(rct->xmax-dx, centy-4.0f, rct->xmax-dx, centy+4.0f);
fdrawline(rct->xmax-dx-3.0f*snode->aspect, centy-4.0f, rct->xmax-dx-3.0f*snode->aspect, centy+4.0f);
UI_ThemeColorShade(color_id, +30);
dx-= snode->aspect;
fdrawline(rct->xmax-dx, centy-4.0f, rct->xmax-dx, centy+4.0f);
fdrawline(rct->xmax-dx-3.0f*snode->aspect, centy-4.0f, rct->xmax-dx-3.0f*snode->aspect, centy+4.0f);
/* sockets */
for(sock= node->inputs.first; sock; sock= sock->next) {
if(!nodeSocketIsHidden(sock))
node_socket_circle_draw(snode->nodetree, sock, socket_size);
}
for(sock= node->outputs.first; sock; sock= sock->next) {
if(!nodeSocketIsHidden(sock))
node_socket_circle_draw(snode->nodetree, sock, socket_size);
}
uiEndBlock(C, node->block);
uiDrawBlock(C, node->block);
node->block= NULL;
}
void node_draw_default(const bContext *C, ARegion *ar, SpaceNode *snode, bNodeTree *ntree, bNode *node)
{
if(node->flag & NODE_HIDDEN)
node_draw_hidden(C, ar, snode, node);
else
node_draw_basis(C, ar, snode, ntree, node);
}
static void node_update(const bContext *C, bNodeTree *ntree, bNode *node)
{
if (node->typeinfo->drawupdatefunc)
node->typeinfo->drawupdatefunc(C, ntree, node);
}
void node_update_nodetree(const bContext *C, bNodeTree *ntree, float offsetx, float offsety)
{
bNode *node;
for(node= ntree->nodes.first; node; node= node->next) {
/* XXX little hack */
node->locx += offsetx;
node->locy += offsety;
node_update(C, ntree, node);
node->locx -= offsetx;
node->locy -= offsety;
}
}
static void node_draw(const bContext *C, ARegion *ar, SpaceNode *snode, bNodeTree *ntree, bNode *node)
{
if (node->typeinfo->drawfunc)
node->typeinfo->drawfunc(C, ar, snode, ntree, node);
}
void node_draw_nodetree(const bContext *C, ARegion *ar, SpaceNode *snode, bNodeTree *ntree)
{
bNode *node;
bNodeLink *link;
int a;
if(ntree==NULL) return; /* groups... */
/* node lines */
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
for(link= ntree->links.first; link; link= link->next)
node_draw_link(&ar->v2d, snode, link);
glDisable(GL_LINE_SMOOTH);
glDisable(GL_BLEND);
/* draw nodes, last nodes in front */
for(a=0, node= ntree->nodes.first; node; node=node->next, a++) {
node->nr= a; /* index of node in list, used for exec event code */
node_draw(C, ar, snode, ntree, node);
}
}
void drawnodespace(const bContext *C, ARegion *ar, View2D *v2d)
{
View2DScrollers *scrollers;
SpaceNode *snode= CTX_wm_space_node(C);
Scene *scene= CTX_data_scene(C);
int color_manage = scene->r.color_mgt_flag & R_COLOR_MANAGEMENT;
bNodeLinkDrag *nldrag;
UI_ThemeClearColor(TH_BACK);
glClear(GL_COLOR_BUFFER_BIT);
UI_view2d_view_ortho(v2d);
//uiFreeBlocksWin(&sa->uiblocks, sa->win);
/* only set once */
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glEnable(GL_MAP1_VERTEX_3);
/* aspect+font, set each time */
snode->aspect= (v2d->cur.xmax - v2d->cur.xmin)/((float)ar->winx);
// XXX snode->curfont= uiSetCurFont_ext(snode->aspect);
UI_view2d_constant_grid_draw(v2d);
/* backdrop */
draw_nodespace_back_pix(ar, snode, color_manage);
/* nodes */
snode_set_context(snode, CTX_data_scene(C));
if(snode->nodetree) {
bNode *node;
node_uiblocks_init(C, snode->nodetree);
/* uiBlocks must be initialized in drawing order for correct event clipping.
* Node group internal blocks added after the main group block.
*/
for(node= snode->nodetree->nodes.first; node; node= node->next) {
if(node->flag & NODE_GROUP_EDIT)
node_uiblocks_init(C, (bNodeTree *)node->id);
}
node_update_nodetree(C, snode->nodetree, 0.0f, 0.0f);
node_draw_nodetree(C, ar, snode, snode->nodetree);
#if 0
/* active group */
for(node= snode->nodetree->nodes.first; node; node= node->next) {
if(node->flag & NODE_GROUP_EDIT)
node_draw_group(C, ar, snode, snode->nodetree, node);
}
#endif
}
/* temporary links */
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
for(nldrag= snode->linkdrag.first; nldrag; nldrag= nldrag->next)
node_draw_link(&ar->v2d, snode, nldrag->link);
glDisable(GL_LINE_SMOOTH);
glDisable(GL_BLEND);
/* draw grease-pencil ('canvas' strokes) */
if (/*(snode->flag & SNODE_DISPGP) &&*/ (snode->nodetree))
draw_gpencil_view2d((bContext*)C, 1);
/* reset view matrix */
UI_view2d_view_restore(C);
/* draw grease-pencil (screen strokes, and also paintbuffer) */
if (/*(snode->flag & SNODE_DISPGP) && */(snode->nodetree))
draw_gpencil_view2d((bContext*)C, 0);
/* scrollers */
scrollers= UI_view2d_scrollers_calc(C, v2d, 10, V2D_GRID_CLAMP, V2D_ARG_DUMMY, V2D_ARG_DUMMY);
UI_view2d_scrollers_draw(C, v2d, scrollers);
UI_view2d_scrollers_free(scrollers);
}
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