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98577f4e02ea50cd3daeb5900e30485de994942d
test/source/blender/src/drawnode.c
Ton Roosendaal 98577f4e02 Review done with Matt; so here's a nicer version of the 'mini node'. 
- nodes now have in header a triangle to minimize them or restore view
- mininodes have a scale dragger on right hand
2005-12-28 21:50:06 +00:00

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/**
* $Id:
*
* ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "BLI_blenlib.h"
#include "BLI_arithb.h"
#include "DNA_action_types.h"
#include "DNA_ipo_types.h"
#include "DNA_object_types.h"
#include "DNA_material_types.h"
#include "DNA_node_types.h"
#include "DNA_scene_types.h"
#include "DNA_space_types.h"
#include "DNA_screen_types.h"
#include "DNA_texture_types.h"
#include "DNA_userdef_types.h"
#include "BKE_global.h"
#include "BKE_object.h"
#include "BKE_material.h"
#include "BKE_node.h"
#include "BKE_utildefines.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "BIF_interface.h"
#include "BIF_interface_icons.h"
#include "BIF_language.h"
#include "BIF_mywindow.h"
#include "BIF_resources.h"
#include "BIF_screen.h"
#include "BSE_drawipo.h"
#include "BSE_node.h"
#include "BSE_view.h"
#include "BMF_Api.h"
#include "blendef.h"
#include "butspace.h"
#include "interface.h" /* urm... for rasterpos_safe, roundbox */
#include "mydevice.h"
#include "MEM_guardedalloc.h"
static void snode_drawstring(SpaceNode *snode, char *str, int okwidth)
{
char drawstr[NODE_MAXSTR];
int width;
if(str[0]==0 || okwidth<4) return;
BLI_strncpy(drawstr, str, NODE_MAXSTR);
width= snode->aspect*BIF_GetStringWidth(snode->curfont, drawstr, 0);
if(width > okwidth) {
int len= strlen(drawstr)-1;
while(width > okwidth && len>=0) {
drawstr[len]= 0;
width= snode->aspect*BIF_GetStringWidth(snode->curfont, drawstr, 0);
len--;
}
if(len==0) return;
}
BIF_DrawString(snode->curfont, drawstr, 0);
}
/* ************** Socket callbacks *********** */
/* NOTE: this is a block-menu, needs 0 events, otherwise the menu closes */
static uiBlock *socket_value_menu(void *sock_v)
{
bNodeSocket *sock= sock_v;
uiBlock *block;
char name[NODE_MAXSTR];
/* don't add new block to a listbase if caller is LABEL button */
block= uiNewBlock(NULL, "socket menu", UI_EMBOSS, UI_HELV, curarea->win);
/* use this for a fake extra empy space around the buttons */
uiDefBut(block, LABEL, 0, "", -4, -4, 188, 28, NULL, 0, 0, 0, 0, "");
BLI_strncpy(name, sock->name, NODE_MAXSTR-1);
strcat(name, " ");
uiDefButF(block, NUMSLI, 0, name, 0,0,180,20, sock->ns.vec, 0.0, 1.0, 10, 0, "");
uiBlockSetDirection(block, UI_TOP);
return block;
}
/* NOTE: this is a block-menu, needs 0 events, otherwise the menu closes */
static uiBlock *socket_vector_menu(void *sock_v)
{
bNodeSocket *sock= sock_v;
uiBlock *block;
/* don't add new block to a listbase if caller is LABEL button */
block= uiNewBlock(NULL, "socket menu", UI_EMBOSS, UI_HELV, curarea->win);
/* use this for a fake extra empy space around the buttons */
uiDefBut(block, LABEL, 0, "", -4, -4, 188, 68, NULL, 0, 0, 0, 0, "");
uiBlockBeginAlign(block);
uiDefButF(block, NUMSLI, 0, "X ", 0,40,180,20, sock->ns.vec, -1.0, 1.0, 10, 0, "");
uiDefButF(block, NUMSLI, 0, "Y ", 0,20,180,20, sock->ns.vec+1, -1.0, 1.0, 10, 0, "");
uiDefButF(block, NUMSLI, 0, "Z ", 0,0,180,20, sock->ns.vec+2, -1.0, 1.0, 10, 0, "");
uiBlockSetDirection(block, UI_TOP);
return block;
}
static uiBlock *socket_color_menu(void *sock_v)
{
bNodeSocket *sock= sock_v;
uiBlock *block;
/* don't add new block to a listbase if caller is LABEL button */
block= uiNewBlock(NULL, "socket menu", UI_EMBOSS, UI_HELV, curarea->win);
/* use this for a fake extra empy space around the buttons */
uiDefBut(block, LABEL, 0, "", -4, -4, 188, 68, NULL, 0, 0, 0, 0, "");
uiBlockBeginAlign(block);
uiDefButF(block, NUMSLI, 0, "R ", 0,40,180,20, sock->ns.vec, 0.0, 1.0, 10, 0, "");
uiDefButF(block, NUMSLI, 0, "G ", 0,20,180,20, sock->ns.vec+1, 0.0, 1.0, 10, 0, "");
uiDefButF(block, NUMSLI, 0, "B ", 0,0,180,20, sock->ns.vec+2, 0.0, 1.0, 10, 0, "");
uiBlockSetDirection(block, UI_TOP);
return block;
}
static void node_ID_title_cb(void *node_v, void *unused_v)
{
bNode *node= node_v;
if(node->id)
BLI_strncpy(node->name, node->id->name+2, 21);
}
/* ****************** BUTTON CALLBACKS FOR SHADER NODES ***************** */
static int node_shader_buts_material(uiBlock *block, bNode *node, rctf *butr)
{
if(block) {
uiBut *bt;
float dx= (butr->xmax-butr->xmin)/3.0f;
uiBlockBeginAlign(block);
bt= uiDefIDPoinBut(block, test_matpoin_but, ID_MA, B_NODE_EXEC, "",
butr->xmin, butr->ymin+19.0f, butr->xmax-butr->xmin, 19.0f,
&node->id, "");
uiButSetFunc(bt, node_ID_title_cb, node, NULL);
uiDefButBitS(block, TOG, SH_NODE_MAT_DIFF, B_NODE_EXEC, "Diff",
butr->xmin, butr->ymin, dx, 19.0f,
&node->custom1, 0, 0, 0, 0, "Material Node outputs Diffuse");
uiDefButBitS(block, TOG, SH_NODE_MAT_SPEC, B_NODE_EXEC, "Spec",
butr->xmin+dx, butr->ymin, dx, 19.0f,
&node->custom1, 0, 0, 0, 0, "Material Node outputs Specular");
uiDefButBitS(block, TOG, SH_NODE_MAT_NEG, B_NODE_EXEC, "Neg Normal",
butr->xmin+2.0f*dx, butr->ymin, dx, 19.0f,
&node->custom1, 0, 0, 0, 0, "Material Node uses inverted Normal");
uiBlockEndAlign(block);
}
return 38;
}
static int node_shader_buts_texture(uiBlock *block, bNode *node, rctf *butr)
{
if(block) {
uiBut *bt;
bt= uiDefIDPoinBut(block, test_texpoin_but, ID_TE, B_NODE_EXEC, "",
butr->xmin, butr->ymin, butr->xmax-butr->xmin, 19.0f,
&node->id, "");
uiButSetFunc(bt, node_ID_title_cb, node, NULL);
}
return 19;
}
static int node_shader_buts_value(uiBlock *block, bNode *node, rctf *butr)
{
if(block) {
bNodeSocket *sock= node->outputs.first; /* first socket stores value */
uiDefButF(block, NUM, B_NODE_EXEC, "",
butr->xmin, butr->ymin, butr->xmax-butr->xmin, 20.0f,
sock->ns.vec, 0.0f, 1.0f, 10, 2, "");
}
return 20;
}
static int node_shader_buts_rgb(uiBlock *block, bNode *node, rctf *butr)
{
if(block) {
bNodeSocket *sock= node->outputs.first; /* first socket stores value */
/* enforce square box drawing */
uiBlockSetEmboss(block, UI_EMBOSSP);
uiDefButF(block, HSVCUBE, B_NODE_EXEC, "",
butr->xmin, butr->ymin, butr->xmax-butr->xmin, 12.0f,
sock->ns.vec, 0.0f, 1.0f, 3, 0, "");
uiDefButF(block, HSVCUBE, B_NODE_EXEC, "",
butr->xmin, butr->ymin+15.0f, butr->xmax-butr->xmin, butr->ymax-butr->ymin -15.0f -15.0f,
sock->ns.vec, 0.0f, 1.0f, 2, 0, "");
uiDefButF(block, COL, B_NOP, "",
butr->xmin, butr->ymax-12.0f, butr->xmax-butr->xmin, 12.0f,
sock->ns.vec, 0.0, 0.0, -1, 0, "");
/* the -1 above prevents col button to popup a color picker */
uiBlockSetEmboss(block, UI_EMBOSS);
}
return 30 + (int)(node->width-NODE_DY);
}
static void node_but_title_cb(void *node_v, void *but_v)
{
bNode *node= node_v;
uiBut *bt= but_v;
BLI_strncpy(node->name, bt->drawstr, NODE_MAXSTR);
}
static int node_shader_buts_mix_rgb(uiBlock *block, bNode *node, rctf *butr)
{
if(block) {
uiBut *bt;
bNodeSocket *sock= node->inputs.first; /* first socket stores "fac" */
uiBlockBeginAlign(block);
/* blend type */
bt=uiDefButS(block, MENU, B_NODE_EXEC, "Mix %x0|Add %x1|Subtract %x3|Multiply %x2|Screen %x4|Divide %x5|Difference %x6|Darken %x7|Lighten %x8",
butr->xmin, butr->ymin+20.0f, butr->xmax-butr->xmin, 20.0f,
&node->custom1, 0, 0, 0, 0, "");
uiButSetFunc(bt, node_but_title_cb, node, bt);
/* value */
uiDefButF(block, NUM, B_NODE_EXEC, "",
butr->xmin, butr->ymin, butr->xmax-butr->xmin, 20.0f,
sock->ns.vec, 0.0f, 1.0f, 10, 2, "");
uiBlockEndAlign(block);
}
return 40;
}
static int node_shader_buts_valtorgb(uiBlock *block, bNode *node, rctf *butr)
{
if(block && (node->flag & NODE_OPTIONS)) {
if(node->storage) {
draw_colorband_buts_small(block, node->storage, butr, B_NODE_EXEC);
}
}
return 40;
}
/* only once called */
static void node_shader_set_butfunc(bNodeType *ntype)
{
switch(ntype->type) {
case SH_NODE_MATERIAL:
ntype->butfunc= node_shader_buts_material;
break;
case SH_NODE_TEXTURE:
ntype->butfunc= node_shader_buts_texture;
break;
case SH_NODE_VALUE:
ntype->butfunc= node_shader_buts_value;
break;
case SH_NODE_RGB:
ntype->butfunc= node_shader_buts_rgb;
break;
case SH_NODE_MIX_RGB:
ntype->butfunc= node_shader_buts_mix_rgb;
break;
case SH_NODE_VALTORGB:
ntype->butfunc= node_shader_buts_valtorgb;
break;
default:
ntype->butfunc= NULL;
}
}
/* ******* init draw callbacks for all tree types, only called in usiblender.c, once ************* */
void init_node_butfuncs(void)
{
bNodeType **typedefs;
/* shader nodes */
typedefs= node_all_shaders; /* BKE_node.h */
while( *typedefs) {
node_shader_set_butfunc(*typedefs);
typedefs++;
}
}
/* ************** Generic drawing ************** */
static void draw_nodespace_grid(SpaceNode *snode)
{
float start, step= 25.0f;
/* window is 'pixel size', like buttons */
BIF_ThemeColorShade(TH_BACK, -10);
start= snode->v2d.cur.xmin -fmod(snode->v2d.cur.xmin, step);
glBegin(GL_LINES);
for(; start<snode->v2d.cur.xmax; start+=step) {
glVertex2f(start, snode->v2d.cur.ymin);
glVertex2f(start, snode->v2d.cur.ymax);
}
start= snode->v2d.cur.ymin -fmod(snode->v2d.cur.ymin, step);
for(; start<snode->v2d.cur.ymax; start+=step) {
glVertex2f(snode->v2d.cur.xmin, start);
glVertex2f(snode->v2d.cur.xmax, start);
}
glEnd();
}
static void nodeshadow(rctf *rct, float radius, int select)
{
float rad;
float a;
char alpha= 2;
glEnable(GL_BLEND);
if(radius > (rct->ymax-rct->ymin-10.0f)/2.0f)
rad= (rct->ymax-rct->ymin-10.0f)/2.0f;
else
rad= radius;
if(select) a= 10.0f; else a= 7.0f;
for(; a>0.0f; a-=1.0f) {
/* alpha ranges from 2 to 20 or so */
glColor4ub(0, 0, 0, alpha);
alpha+= 2;
gl_round_box(GL_POLYGON, rct->xmin - a, rct->ymin - a, rct->xmax + a, rct->ymax-10.0f + a, rad+a);
}
/* outline emphasis */
glEnable( GL_LINE_SMOOTH );
glColor4ub(0, 0, 0, 100);
gl_round_box(GL_LINE_LOOP, rct->xmin-0.5f, rct->ymin-0.5f, rct->xmax+0.5f, rct->ymax+0.5f, radius);
glDisable( GL_LINE_SMOOTH );
glDisable(GL_BLEND);
}
/* nice AA filled circle */
static void socket_circle_draw(float x, float y, float size, int type, int select)
{
/* 16 values of sin function */
static float si[16] = {
0.00000000, 0.39435585,0.72479278,0.93775213,
0.99871650,0.89780453,0.65137248,0.29936312,
-0.10116832,-0.48530196,-0.79077573,-0.96807711,
-0.98846832,-0.84864425,-0.57126821,-0.20129852
};
/* 16 values of cos function */
static float co[16] ={
1.00000000,0.91895781,0.68896691,0.34730525,
-0.05064916,-0.44039415,-0.75875812,-0.95413925,
-0.99486932,-0.87434661,-0.61210598,-0.25065253,
0.15142777,0.52896401,0.82076344,0.97952994,
};
int a;
if(select==0) {
if(type==-1)
glColor3ub(0, 0, 0);
else if(type==SOCK_VALUE)
glColor3ub(160, 160, 160);
else if(type==SOCK_VECTOR)
glColor3ub(100, 100, 200);
else if(type==SOCK_RGBA)
glColor3ub(200, 200, 40);
else
glColor3ub(100, 200, 100);
}
else {
if(type==SOCK_VALUE)
glColor3ub(200, 200, 200);
else if(type==SOCK_VECTOR)
glColor3ub(140, 140, 240);
else if(type==SOCK_RGBA)
glColor3ub(240, 240, 100);
else
glColor3ub(140, 240, 140);
}
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);
}
/* not a callback */
static void node_draw_preview(bNodePreview *preview, rctf *prv)
{
float scale= (prv->xmax-prv->xmin)/((float)preview->xsize);
glPixelZoom(scale, scale);
glEnable(GL_BLEND);
glaDrawPixelsTex(prv->xmin, prv->ymin, preview->xsize, preview->ysize, GL_FLOAT, preview->rect);
glDisable(GL_BLEND);
glPixelZoom(1.0f, 1.0f);
}
/* based on settings in node, sets drawing rect info */
static void node_update(bNode *node)
{
bNodeSocket *nsock;
if(node->flag & NODE_HIDDEN) {
float rad, drad;
node->totr.xmin= node->locx;
node->totr.xmax= node->locx + 3*HIDDEN_RAD + node->miniwidth;
node->totr.ymax= node->locy + (HIDDEN_RAD - 0.5f*NODE_DY);
node->totr.ymin= node->totr.ymax - 2*HIDDEN_RAD;
/* output connectors */
rad=drad= M_PI/(1.0f + (float)BLI_countlist(&node->outputs));
for(nsock= node->outputs.first; nsock; nsock= nsock->next, rad+= drad) {
nsock->locx= node->totr.xmax - HIDDEN_RAD + sin(rad)*HIDDEN_RAD;
nsock->locy= node->totr.ymin + HIDDEN_RAD + cos(rad)*HIDDEN_RAD;
}
/* input connectors */
rad=drad= - M_PI/(1.0f + (float)BLI_countlist(&node->inputs));
for(nsock= node->inputs.first; nsock; nsock= nsock->next, rad+= drad) {
nsock->locx= node->totr.xmin + HIDDEN_RAD + sin(rad)*HIDDEN_RAD;
nsock->locy= node->totr.ymin + HIDDEN_RAD + cos(rad)*HIDDEN_RAD;
}
}
else {
float dy= node->locy;
/* header */
dy-= NODE_DY;
/* output connectors */
for(nsock= node->outputs.first; nsock; nsock= nsock->next) {
nsock->locx= node->locx + node->width;
nsock->locy= dy - NODE_DYS;
dy-= NODE_DY;
}
node->prvr.xmin= node->butr.xmin= node->locx + NODE_DYS;
node->prvr.xmax= node->butr.xmax= node->locx + node->width- NODE_DYS;
/* preview rect? */
if(node->flag & NODE_PREVIEW) {
dy-= NODE_DYS/2;
node->prvr.ymax= dy;
node->prvr.ymin= dy-(node->width-NODE_DY);
dy= node->prvr.ymin - NODE_DYS/2;
}
/* buttons rect? */
if((node->flag & NODE_OPTIONS) && node->typeinfo->butfunc) {
dy-= NODE_DYS/2;
node->butr.ymax= dy;
node->butr.ymin= dy - (float)node->typeinfo->butfunc(NULL, node, NULL);
dy= node->butr.ymin - NODE_DYS/2;
}
/* input connectors */
for(nsock= node->inputs.first; nsock; nsock= nsock->next) {
nsock->locx= node->locx;
nsock->locy= dy - NODE_DYS;
dy-= NODE_DY;
}
node->totr.xmin= node->locx;
node->totr.xmax= node->locx + node->width;
node->totr.ymax= node->locy;
node->totr.ymin= dy;
}
}
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);
BIF_ThemeColorShade(color_id, +30);
fdrawline(xmin, ymin, xmax, ymax);
fdrawline(xmin+dx, ymin, xmax, ymax-dy);
BIF_ThemeColorShade(color_id, -10);
fdrawline(xmin, ymin+aspect, xmax, ymax+aspect);
fdrawline(xmin+dx, ymin+aspect, xmax, ymax-dy+aspect);
}
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_GENERATOR)
return TH_NODE_GENERATOR;
if(node->typeinfo->nclass==NODE_CLASS_OPERATOR)
return TH_NODE_OPERATOR;
return TH_NODE;
}
static void node_basis_draw(SpaceNode *snode, bNode *node)
{
bNodeSocket *sock;
rctf *rct= &node->totr;
float slen, iconofs;
int ofs, color_id= node_get_colorid(node);
uiSetRoundBox(15-4);
nodeshadow(rct, BASIS_RAD, node->flag & SELECT);
/* header */
BIF_ThemeColorShade(color_id, 0);
uiSetRoundBox(3);
uiRoundBox(rct->xmin, rct->ymax-NODE_DY, rct->xmax, rct->ymax, BASIS_RAD);
/* show/hide icons */
iconofs= rct->xmax;
if(node->typeinfo->flag & NODE_PREVIEW) {
int icon_id;
if(node->flag & (NODE_ACTIVE_ID|NODE_DO_OUTPUT))
icon_id= ICON_MATERIAL;
else
icon_id= ICON_MATERIAL_DEHLT;
iconofs-= 18.0f;
glEnable(GL_BLEND);
BIF_icon_set_aspect(icon_id, snode->aspect);
BIF_icon_draw_blended(iconofs, rct->ymax-NODE_DY+2, icon_id, 0, -50);
glDisable(GL_BLEND);
}
if(node->typeinfo->flag & NODE_OPTIONS) {
iconofs-= 18.0f;
glEnable(GL_BLEND);
BIF_icon_set_aspect(ICON_BUTS, snode->aspect);
BIF_icon_draw_blended(iconofs, rct->ymax-NODE_DY+2, ICON_BUTS, 0, -50);
glDisable(GL_BLEND);
}
/* title */
if(node->flag & SELECT)
BIF_ThemeColor(TH_TEXT_HI);
else
BIF_ThemeColor(TH_TEXT);
/* open/close entirely? */
ui_draw_tria_icon(rct->xmin+6.0f, rct->ymax-NODE_DY+5.0f, snode->aspect, 'v');
ui_rasterpos_safe(rct->xmin+18.0f, rct->ymax-NODE_DY+5.0f, snode->aspect);
snode_drawstring(snode, node->name, (int)(iconofs - rct->xmin-18.0f));
/* body */
BIF_ThemeColorShade(color_id, 20);
uiSetRoundBox(8);
uiRoundBox(rct->xmin, rct->ymin, rct->xmax, rct->ymax-NODE_DY, BASIS_RAD);
/* scaling indicator */
node_scaling_widget(color_id, snode->aspect, rct->xmax-BASIS_RAD*snode->aspect, rct->ymin, rct->xmax, rct->ymin+BASIS_RAD*snode->aspect);
/* outline active emphasis */
if(node->flag & NODE_ACTIVE) {
glEnable(GL_BLEND);
glColor4ub(200, 200, 200, 140);
uiSetRoundBox(15-4);
gl_round_box(GL_LINE_LOOP, rct->xmin, rct->ymin, rct->xmax, rct->ymax, BASIS_RAD);
glDisable(GL_BLEND);
}
/* socket inputs, label buttons */
for(sock= node->inputs.first; sock; sock= sock->next) {
socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
if(sock->type==SOCK_VALUE) {
uiBut *bt= uiDefBut(snode->block, LABEL, B_NODE_EXEC, sock->name, sock->locx+5.0f, sock->locy-10.0f, node->width-NODE_DY, NODE_DY, sock, 0, 0, 0, 0, "");
bt->block_func= socket_value_menu;
}
else if(sock->type==SOCK_VECTOR) {
uiBut *bt= uiDefBut(snode->block, LABEL, B_NODE_EXEC, sock->name, sock->locx+5.0f, sock->locy-10.0f, node->width-NODE_DY, NODE_DY, sock, 0, 0, 0, 0, "");
bt->block_func= socket_vector_menu;
}
else if(sock->type==SOCK_RGBA) {
uiBut *bt= uiDefBut(snode->block, LABEL, B_NODE_EXEC, sock->name, sock->locx+5.0f, sock->locy-10.0f, node->width-NODE_DY, NODE_DY, sock, 0, 0, 0, 0, "");
bt->block_func= socket_color_menu;
}
else {
BIF_ThemeColor(TH_TEXT);
ui_rasterpos_safe(sock->locx+8.0f, sock->locy-5.0f, snode->aspect);
BIF_DrawString(snode->curfont, sock->name, 0);
}
}
/* socket outputs */
for(sock= node->outputs.first; sock; sock= sock->next) {
socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
BIF_ThemeColor(TH_TEXT);
ofs= 0;
slen= snode->aspect*BIF_GetStringWidth(snode->curfont, sock->name, 0);
while(slen > node->width) {
ofs++;
slen= snode->aspect*BIF_GetStringWidth(snode->curfont, sock->name+ofs, 0);
}
ui_rasterpos_safe(sock->locx-8.0f-slen, sock->locy-5.0f, snode->aspect);
BIF_DrawString(snode->curfont, sock->name+ofs, 0);
}
/* preview */
if(node->flag & NODE_PREVIEW)
if(node->preview)
node_draw_preview(node->preview, &node->prvr);
/* buttons */
if(node->flag & NODE_OPTIONS)
if(node->typeinfo->butfunc)
node->typeinfo->butfunc(snode->block, node, &node->butr);
}
void node_hidden_draw(SpaceNode *snode, bNode *node)
{
bNodeSocket *sock;
rctf *rct= &node->totr;
float dx, centy= 0.5f*(rct->ymax+rct->ymin);
int color_id= node_get_colorid(node);
/* shadow */
uiSetRoundBox(15);
nodeshadow(rct, HIDDEN_RAD, node->flag & SELECT);
/* body */
BIF_ThemeColorShade(color_id, 20);
uiRoundBox(rct->xmin, rct->ymin, rct->xmax, rct->ymax, HIDDEN_RAD);
/* outline active emphasis */
if(node->flag & NODE_ACTIVE) {
glEnable(GL_BLEND);
glColor4ub(200, 200, 200, 140);
gl_round_box(GL_LINE_LOOP, rct->xmin, rct->ymin, rct->xmax, rct->ymax, HIDDEN_RAD);
glDisable(GL_BLEND);
}
/* title */
if(node->flag & SELECT)
BIF_ThemeColor(TH_TEXT_HI);
else
BIF_ThemeColor(TH_TEXT);
/* open/close entirely? */
ui_draw_tria_icon(rct->xmin+9.0f, centy-6.0f, snode->aspect, 'h');
ui_rasterpos_safe(rct->xmin+18.0f, centy-4.0f, snode->aspect);
snode_drawstring(snode, node->name, (int)(rct->xmax - rct->xmin-18.0f -12.0f));
/* scale widget thing */
BIF_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);
BIF_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);
/* icon */
// if(node->id) {
// glEnable(GL_BLEND);
// BIF_icon_set_aspect(node->id->icon_id, snode->aspect);
// BIF_icon_draw(rct->xmin+HIDDEN_RAD, -1.0f+rct->ymin+HIDDEN_RAD/2, node->id->icon_id);
// glDisable(GL_BLEND);
// }
/* sockets */
for(sock= node->inputs.first; sock; sock= sock->next) {
socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
}
for(sock= node->outputs.first; sock; sock= sock->next) {
socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
}
}
void node_draw_link(SpaceNode *snode, bNodeLink *link)
{
float vec[4][3];
float dist, spline_step, mx=0.0f, my=0.0f;
int curve_res;
if(link->fromnode==NULL && link->tonode==NULL)
return;
/* this is dragging link */
if(link->fromnode==NULL || link->tonode==NULL) {
short mval[2];
getmouseco_areawin(mval);
areamouseco_to_ipoco(G.v2d, mval, &mx, &my);
BIF_ThemeColor(TH_WIRE);
}
else {
/* check cyclic */
if(link->fromnode->level >= link->tonode->level && link->tonode->level!=0xFFF)
BIF_ThemeColor(TH_WIRE);
else
BIF_ThemeColor(TH_REDALERT);
}
vec[0][2]= vec[1][2]= vec[2][2]= vec[3][2]= 0.0; /* only 2d spline, set the Z to 0*/
/* in v0 and v3 we put begin/end points */
if(link->fromnode) {
vec[0][0]= link->fromsock->locx;
vec[0][1]= link->fromsock->locy;
}
else {
vec[0][0]= mx;
vec[0][1]= my;
}
if(link->tonode) {
vec[3][0]= link->tosock->locx;
vec[3][1]= link->tosock->locy;
}
else {
vec[3][0]= mx;
vec[3][1]= my;
}
dist= 0.5f*ABS(vec[0][0] - vec[3][0]);
/* check direction later, for top sockets */
vec[1][0]= vec[0][0]+dist;
vec[1][1]= vec[0][1];
vec[2][0]= vec[3][0]-dist;
vec[2][1]= vec[3][1];
if( MIN4(vec[0][0], vec[1][0], vec[2][0], vec[3][0]) > G.v2d->cur.xmax); /* clipped */
else if ( MAX4(vec[0][0], vec[1][0], vec[2][0], vec[3][0]) < G.v2d->cur.xmin); /* clipped */
else {
curve_res = 24;
/* we can reuse the dist variable here to increment the GL curve eval amount*/
dist = 1.0f/curve_res;
spline_step = 0.0f;
glMap1f(GL_MAP1_VERTEX_3, 0.0, 1.0, 3, 4, vec[0]);
glBegin(GL_LINE_STRIP);
while (spline_step < 1.000001f) {
glEvalCoord1f(spline_step);
spline_step += dist;
}
glEnd();
}
}
void drawnodespace(ScrArea *sa, void *spacedata)
{
SpaceNode *snode= sa->spacedata.first;
float col[3];
BIF_GetThemeColor3fv(TH_BACK, col);
glClearColor(col[0], col[1], col[2], 0.0);
glClear(GL_COLOR_BUFFER_BIT);
calc_scrollrcts(sa, &(snode->v2d), sa->winx, sa->winy);
myortho2(snode->v2d.cur.xmin, snode->v2d.cur.xmax, snode->v2d.cur.ymin, snode->v2d.cur.ymax);
bwin_clear_viewmat(sa->win); /* clear buttons view */
glLoadIdentity();
/* only set once */
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glEnable(GL_MAP1_VERTEX_3);
/* aspect+font, set each time */
snode->aspect= (snode->v2d.cur.xmax - snode->v2d.cur.xmin)/((float)sa->winx);
snode->curfont= uiSetCurFont_ext(snode->aspect);
/* backdrop */
draw_nodespace_grid(snode);
/* nodes */
snode_set_context(snode);
if(snode->nodetree) {
bNode *node;
bNodeLink *link;
/* for now, we set drawing coordinates on each redraw */
for(node= snode->nodetree->nodes.first; node; node= node->next)
node_update(node);
/* node lines */
glEnable(GL_BLEND);
glEnable( GL_LINE_SMOOTH );
for(link= snode->nodetree->links.first; link; link= link->next)
node_draw_link(snode, link);
glDisable(GL_BLEND);
glDisable( GL_LINE_SMOOTH );
/* not selected */
snode->block= uiNewBlock(&sa->uiblocks, "node buttons1", UI_EMBOSS, UI_HELV, sa->win);
uiBlockSetFlag(snode->block, UI_BLOCK_NO_HILITE);
for(node= snode->nodetree->nodes.first; node; node= node->next) {
if(!(node->flag & SELECT)) {
if(node->flag & NODE_HIDDEN)
node_hidden_draw(snode, node);
else
node_basis_draw(snode, node);
}
}
uiDrawBlock(snode->block);
/* selected */
snode->block= uiNewBlock(&sa->uiblocks, "node buttons2", UI_EMBOSS, UI_HELV, sa->win);
uiBlockSetFlag(snode->block, UI_BLOCK_NO_HILITE);
for(node= snode->nodetree->nodes.first; node; node= node->next) {
if(node->flag & SELECT) {
if(node->flag & NODE_HIDDEN)
node_hidden_draw(snode, node);
else
node_basis_draw(snode, node);
}
}
uiDrawBlock(snode->block);
}
/* restore viewport (not needed yet) */
mywinset(sa->win);
/* ortho at pixel level curarea */
myortho2(-0.375, sa->winx-0.375, -0.375, sa->winy-0.375);
draw_area_emboss(sa);
curarea->win_swap= WIN_BACK_OK;
/* in the end, this is a delayed previewrender test, to allow buttons to be first */
if(snode->flag & SNODE_DO_PREVIEW) {
addafterqueue(sa->win, RENDERPREVIEW, 1);
snode->flag &= ~SNODE_DO_PREVIEW;
}
}
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