blender-archive/source/blender/editors/interface/interface_regions.c

/**
 * ***** 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) 2008 Blender Foundation.
 * All rights reserved.
 * 
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */


#include <stdarg.h>
#include <stdlib.h>
#include <string.h>

#include "MEM_guardedalloc.h"

#include "DNA_screen_types.h"
#include "DNA_view2d_types.h"
#include "DNA_userdef_types.h"
#include "DNA_windowmanager_types.h"

#include "BLI_arithb.h"
#include "BLI_blenlib.h"
#include "BLI_dynstr.h"
#include "BLI_ghash.h"

#include "BKE_context.h"
#include "BKE_icons.h"
#include "BKE_report.h"
#include "BKE_screen.h"
#include "BKE_texture.h"
#include "BKE_utildefines.h"

#include "WM_api.h"
#include "WM_types.h"
#include "wm_draw.h"
#include "wm_subwindow.h"
#include "wm_window.h"

#include "RNA_access.h"

#include "BIF_gl.h"

#include "UI_interface.h"
#include "UI_interface_icons.h"
#include "UI_view2d.h"

#include "BLF_api.h"

#include "ED_screen.h"

#include "interface_intern.h"

#define MENU_BUTTON_HEIGHT	20
#define MENU_SEPR_HEIGHT	6
#define B_NOP              	-1
#define MENU_SHADOW_SIDE	8
#define MENU_SHADOW_BOTTOM	10
#define MENU_TOP			8

/*********************** Menu Data Parsing ********************* */

typedef struct MenuEntry {
	char *str;
	int retval;
	int icon;
	int sepr;
} MenuEntry;

typedef struct MenuData {
	char *instr;
	char *title;
	int titleicon;
	
	MenuEntry *items;
	int nitems, itemssize;
} MenuData;

static MenuData *menudata_new(char *instr)
{
	MenuData *md= MEM_mallocN(sizeof(*md), "MenuData");

	md->instr= instr;
	md->title= NULL;
	md->titleicon= 0;
	md->items= NULL;
	md->nitems= md->itemssize= 0;
	
	return md;
}

static void menudata_set_title(MenuData *md, char *title, int titleicon)
{
	if (!md->title)
		md->title= title;
	if (!md->titleicon)
		md->titleicon= titleicon;
}

static void menudata_add_item(MenuData *md, char *str, int retval, int icon, int sepr)
{
	if (md->nitems==md->itemssize) {
		int nsize= md->itemssize?(md->itemssize<<1):1;
		MenuEntry *oitems= md->items;
		
		md->items= MEM_mallocN(nsize*sizeof(*md->items), "md->items");
		if (oitems) {
			memcpy(md->items, oitems, md->nitems*sizeof(*md->items));
			MEM_freeN(oitems);
		}
		
		md->itemssize= nsize;
	}
	
	md->items[md->nitems].str= str;
	md->items[md->nitems].retval= retval;
	md->items[md->nitems].icon= icon;
	md->items[md->nitems].sepr= sepr;
	md->nitems++;
}

void menudata_free(MenuData *md)
{
	MEM_freeN(md->instr);
	if (md->items)
		MEM_freeN(md->items);
	MEM_freeN(md);
}

	/**
	 * Parse menu description strings, string is of the
	 * form "[sss%t|]{(sss[%xNN]|), (%l|), (sss%l|)}", ssss%t indicates the
	 * menu title, sss or sss%xNN indicates an option, 
	 * if %xNN is given then NN is the return value if
	 * that option is selected otherwise the return value
	 * is the index of the option (starting with 1). %l
	 * indicates a seperator, sss%l indicates a label and
	 * new column.
	 * 
	 * @param str String to be parsed.
	 * @retval new menudata structure, free with menudata_free()
	 */
MenuData *decompose_menu_string(char *str) 
{
	char *instr= BLI_strdup(str);
	MenuData *md= menudata_new(instr);
	char *nitem= NULL, *s= instr;
	int nicon=0, nretval= 1, nitem_is_title= 0, nitem_is_sepr= 0;
	
	while (1) {
		char c= *s;

		if (c=='%') {
			if (s[1]=='x') {
				nretval= atoi(s+2);

				*s= '\0';
				s++;
			} else if (s[1]=='t') {
				nitem_is_title= 1;

				*s= '\0';
				s++;
			} else if (s[1]=='l') {
				nitem_is_sepr= 1;
				if(!nitem) nitem= "";

				*s= '\0';
				s++;
			} else if (s[1]=='i') {
				nicon= atoi(s+2);
				
				*s= '\0';
				s++;
			}
		} else if (c=='|' || c == '\n' || c=='\0') {
			if (nitem) {
				*s= '\0';

				if(nitem_is_title) {
					menudata_set_title(md, nitem, nicon);
					nitem_is_title= 0;
				}
				else if(nitem_is_sepr) {
					/* prevent separator to get a value */
					menudata_add_item(md, nitem, -1, nicon, 1);
					nretval= md->nitems+1;
					nitem_is_sepr= 0;
				}
				else {
					menudata_add_item(md, nitem, nretval, nicon, 0);
					nretval= md->nitems+1;
				} 
				
				nitem= NULL;
				nicon= 0;
			}
			
			if (c=='\0')
				break;
		} else if (!nitem)
			nitem= s;
		
		s++;
	}
	
	return md;
}

void ui_set_name_menu(uiBut *but, int value)
{
	MenuData *md;
	int i;
	
	md= decompose_menu_string(but->str);
	for (i=0; i<md->nitems; i++)
		if (md->items[i].retval==value)
			strcpy(but->drawstr, md->items[i].str);
	
	menudata_free(md);
}

int ui_step_name_menu(uiBut *but, int step)
{
	MenuData *md;
	int value= ui_get_but_val(but);
	int i;
	
	md= decompose_menu_string(but->str);
	for (i=0; i<md->nitems; i++)
		if (md->items[i].retval==value)
			break;
	
	if(step==1) {
		/* skip separators */
		for(; i<md->nitems-1; i++) {
			if(md->items[i+1].retval != -1) {
				value= md->items[i+1].retval;
				break;
			}
		}
	}
	else {
		if(i>0) {
			/* skip separators */
			for(; i>0; i--) {
				if(md->items[i-1].retval != -1) {
					value= md->items[i-1].retval;
					break;
				}
			}
		}
	}
	
	menudata_free(md);
		
	return value;
}


/******************** Creating Temporary regions ******************/

ARegion *ui_add_temporary_region(bScreen *sc)
{
	ARegion *ar;

	ar= MEM_callocN(sizeof(ARegion), "area region");
	BLI_addtail(&sc->regionbase, ar);

	ar->regiontype= RGN_TYPE_TEMPORARY;
	ar->alignment= RGN_ALIGN_FLOAT;

	return ar;
}

void ui_remove_temporary_region(bContext *C, bScreen *sc, ARegion *ar)
{
	if(CTX_wm_window(C))
		wm_draw_region_clear(CTX_wm_window(C), ar);

	ED_region_exit(C, ar);
	BKE_area_region_free(NULL, ar);		/* NULL: no spacetype */
	BLI_freelinkN(&sc->regionbase, ar);
}

/************************* Creating Tooltips **********************/

#define MAX_TOOLTIP_LINES 8

typedef struct uiTooltipData {
	rcti bbox;
	uiFontStyle fstyle;
	char lines[MAX_TOOLTIP_LINES][512];
	int linedark[MAX_TOOLTIP_LINES];
	int totline;
	int toth, spaceh, lineh;
} uiTooltipData;

static void ui_tooltip_region_draw(const bContext *C, ARegion *ar)
{
	uiTooltipData *data= ar->regiondata;
	rcti bbox= data->bbox;
	int a;
	
	ui_draw_menu_back(U.uistyles.first, NULL, &data->bbox);
	
	/* draw text */
	uiStyleFontSet(&data->fstyle);

	bbox.ymax= bbox.ymax - 0.5f*((bbox.ymax - bbox.ymin) - data->toth);
	bbox.ymin= bbox.ymax - data->lineh;

	for(a=0; a<data->totline; a++) {
		if(!data->linedark[a]) glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
		else glColor4f(0.5f, 0.5f, 0.5f, 1.0f);

		uiStyleFontDraw(&data->fstyle, &bbox, data->lines[a]);
		bbox.ymin -= data->lineh + data->spaceh;
		bbox.ymax -= data->lineh + data->spaceh;
	}
}

static void ui_tooltip_region_free(ARegion *ar)
{
	uiTooltipData *data;

	data= ar->regiondata;
	MEM_freeN(data);
	ar->regiondata= NULL;
}

ARegion *ui_tooltip_create(bContext *C, ARegion *butregion, uiBut *but)
{
	uiStyle *style= U.uistyles.first;	// XXX pass on as arg
	static ARegionType type;
	ARegion *ar;
	uiTooltipData *data;
	IDProperty *prop;
	char buf[512];
	float fonth, fontw, aspect= but->block->aspect;
	float x1f, x2f, y1f, y2f;
	int x1, x2, y1, y2, winx, winy, ofsx, ofsy, w, h, a;

	if(but->flag & UI_BUT_NO_TOOLTIP)
		return NULL;

	/* create tooltip data */
	data= MEM_callocN(sizeof(uiTooltipData), "uiTooltipData");

	if(but->tip && strlen(but->tip)) {
		BLI_strncpy(data->lines[data->totline], but->tip, sizeof(data->lines[0]));
		data->totline++;
	}

	if(but->optype && !(but->block->flag & UI_BLOCK_LOOP)) {
		/* operator keymap (not menus, they already have it) */
		prop= (but->opptr)? but->opptr->data: NULL;

		if(WM_key_event_operator_string(C, but->optype->idname, but->opcontext, prop, buf, sizeof(buf))) {
			BLI_snprintf(data->lines[data->totline], sizeof(data->lines[0]), "Shortcut: %s", buf);
			data->linedark[data->totline]= 1;
			data->totline++;
		}
	}

	if(ELEM3(but->type, TEX, IDPOIN, SEARCH_MENU)) {
		/* full string */
		ui_get_but_string(but, buf, sizeof(buf));
		if(buf[0]) {
			BLI_snprintf(data->lines[data->totline], sizeof(data->lines[0]), "Value: %s", buf);
			data->linedark[data->totline]= 1;
			data->totline++;
		}
	}

	if(but->rnaprop) {
		if(but->flag & UI_BUT_DRIVEN) {
			if(ui_but_anim_expression_get(but, buf, sizeof(buf))) {
				/* expression */
				BLI_snprintf(data->lines[data->totline], sizeof(data->lines[0]), "Expression: %s", buf);
				data->linedark[data->totline]= 1;
				data->totline++;
			}
		}

		/* rna info */
		BLI_snprintf(data->lines[data->totline], sizeof(data->lines[0]), "Python: %s.%s", RNA_struct_identifier(but->rnapoin.type), RNA_property_identifier(but->rnaprop));
		data->linedark[data->totline]= 1;
		data->totline++;
	}
	else if (but->optype) {
		PointerRNA *opptr;
		char *str;
		opptr= uiButGetOperatorPtrRNA(but); /* allocated when needed, the button owns it */

		str= WM_operator_pystring(C, but->optype, opptr, 0);

		/* operator info */
		BLI_snprintf(data->lines[data->totline], sizeof(data->lines[0]), "Python: %s", str);
		data->linedark[data->totline]= 1;
		data->totline++;

		MEM_freeN(str);
	}

	if(data->totline == 0) {
		MEM_freeN(data);
		return NULL;
	}

	/* create area region */
	ar= ui_add_temporary_region(CTX_wm_screen(C));

	memset(&type, 0, sizeof(ARegionType));
	type.draw= ui_tooltip_region_draw;
	type.free= ui_tooltip_region_free;
	ar->type= &type;
	
	/* set font, get bb */
	data->fstyle= style->widget; /* copy struct */
	data->fstyle.align= UI_STYLE_TEXT_CENTER;
	ui_fontscale(&data->fstyle.points, aspect);
	uiStyleFontSet(&data->fstyle);

	h= BLF_height(data->lines[0]);

	for(a=0, fontw=0, fonth=0; a<data->totline; a++) {
		w= BLF_width(data->lines[a]);
		fontw= MAX2(fontw, w);
		fonth += (a == 0)? h: h+5;
	}

	fontw *= aspect;
	fonth *= aspect;

	ar->regiondata= data;

	data->toth= fonth;
	data->lineh= h*aspect;
	data->spaceh= 5*aspect;

	/* compute position */
	ofsx= (but->block->panel)? but->block->panel->ofsx: 0;
	ofsy= (but->block->panel)? but->block->panel->ofsy: 0;

	x1f= (but->x1+but->x2)/2.0f + ofsx - 16.0f*aspect;
	x2f= x1f + fontw + 16.0f*aspect;
	y2f= but->y1 + ofsy - 15.0f*aspect;
	y1f= y2f - fonth - 10.0f*aspect;
	
	/* copy to int, gets projected if possible too */
	x1= x1f; y1= y1f; x2= x2f; y2= y2f; 
	
	if(butregion) {
		/* XXX temp, region v2ds can be empty still */
		if(butregion->v2d.cur.xmin != butregion->v2d.cur.xmax) {
			UI_view2d_to_region_no_clip(&butregion->v2d, x1f, y1f, &x1, &y1);
			UI_view2d_to_region_no_clip(&butregion->v2d, x2f, y2f, &x2, &y2);
		}

		x1 += butregion->winrct.xmin;
		x2 += butregion->winrct.xmin;
		y1 += butregion->winrct.ymin;
		y2 += butregion->winrct.ymin;
	}

	wm_window_get_size(CTX_wm_window(C), &winx, &winy);

	if(x2 > winx) {
		/* super size */
		if(x2 > winx + x1) {
			x2= winx;
			x1= 0;
		}
		else {
			x1 -= x2-winx;
			x2= winx;
		}
	}
	if(y1 < 0) {
		y1 += 56*aspect;
		y2 += 56*aspect;
	}

	/* widget rect, in region coords */
	data->bbox.xmin= MENU_SHADOW_SIDE;
	data->bbox.xmax= x2-x1 + MENU_SHADOW_SIDE;
	data->bbox.ymin= MENU_SHADOW_BOTTOM;
	data->bbox.ymax= y2-y1 + MENU_SHADOW_BOTTOM;
	
	/* region bigger for shadow */
	ar->winrct.xmin= x1 - MENU_SHADOW_SIDE;
	ar->winrct.xmax= x2 + MENU_SHADOW_SIDE;
	ar->winrct.ymin= y1 - MENU_SHADOW_BOTTOM;
	ar->winrct.ymax= y2 + MENU_TOP;

	/* adds subwindow */
	ED_region_init(C, ar);
	
	/* notify change and redraw */
	ED_region_tag_redraw(ar);

	return ar;
}

void ui_tooltip_free(bContext *C, ARegion *ar)
{
	ui_remove_temporary_region(C, CTX_wm_screen(C), ar);
}


/************************* Creating Search Box **********************/

struct uiSearchItems {
	int maxitem, totitem, maxstrlen;
	
	int offset, offset_i; /* offset for inserting in array */
	int more;  /* flag indicating there are more items */
	
	char **names;
	void **pointers;
	int *icons;

	AutoComplete *autocpl;
	void *active;
};

typedef struct uiSearchboxData {
	rcti bbox;
	uiFontStyle fstyle;
	uiSearchItems items;
	int active;		/* index in items array */
	int noback;		/* when menu opened with enough space for this */
} uiSearchboxData;

#define SEARCH_ITEMS	10

/* exported for use by search callbacks */
/* returns zero if nothing to add */
int uiSearchItemAdd(uiSearchItems *items, const char *name, void *poin, int iconid)
{
	/* hijack for autocomplete */
	if(items->autocpl) {
		autocomplete_do_name(items->autocpl, name);
		return 1;
	}
	
	/* hijack for finding active item */
	if(items->active) {
		if(poin==items->active)
			items->offset_i= items->totitem;
		items->totitem++;
		return 1;
	}
	
	if(items->totitem>=items->maxitem) {
		items->more= 1;
		return 0;
	}
	
	/* skip first items in list */
	if(items->offset_i > 0) {
		items->offset_i--;
		return 1;
	}
	
	BLI_strncpy(items->names[items->totitem], name, items->maxstrlen);
	items->pointers[items->totitem]= poin;
	items->icons[items->totitem]= iconid;
	
	items->totitem++;
	
	return 1;
}

int uiSearchBoxhHeight(void)
{
	return SEARCH_ITEMS*MENU_BUTTON_HEIGHT + 2*MENU_TOP;
}

/* ar is the search box itself */
static void ui_searchbox_select(bContext *C, ARegion *ar, uiBut *but, int step)
{
	uiSearchboxData *data= ar->regiondata;
	
	/* apply step */
	data->active+= step;
	
	if(data->items.totitem==0)
		data->active= 0;
	else if(data->active > data->items.totitem) {
		if(data->items.more) {
			data->items.offset++;
			data->active= data->items.totitem;
			ui_searchbox_update(C, ar, but, 0);
		}
		else
			data->active= data->items.totitem;
	}
	else if(data->active < 1) {
		if(data->items.offset) {
			data->items.offset--;
			data->active= 1;
			ui_searchbox_update(C, ar, but, 0);
		}
		else if(data->active < 0)
			data->active= 0;
	}
	
	ED_region_tag_redraw(ar);
}

static void ui_searchbox_butrect(rcti *rect, uiSearchboxData *data, int itemnr)
{
	int buth= (data->bbox.ymax-data->bbox.ymin - 2*MENU_TOP)/SEARCH_ITEMS;
	
	*rect= data->bbox;
	rect->xmin= data->bbox.xmin + 3.0f;
	rect->xmax= data->bbox.xmax - 3.0f;
	
	rect->ymax= data->bbox.ymax - MENU_TOP - itemnr*buth;
	rect->ymin= rect->ymax - buth;
	
}

/* x and y in screencoords */
int ui_searchbox_inside(ARegion *ar, int x, int y)
{
	uiSearchboxData *data= ar->regiondata;
	
	return(BLI_in_rcti(&data->bbox, x-ar->winrct.xmin, y-ar->winrct.ymin));
}

/* string validated to be of correct length (but->hardmax) */
void ui_searchbox_apply(uiBut *but, ARegion *ar)
{
	uiSearchboxData *data= ar->regiondata;

	but->func_arg2= NULL;
	
	if(data->active) {
		char *name= data->items.names[data->active-1];
		char *cpoin= strchr(name, '|');
		
		if(cpoin) cpoin[0]= 0;
		BLI_strncpy(but->editstr, name, data->items.maxstrlen);
		if(cpoin) cpoin[0]= '|';
		
		but->func_arg2= data->items.pointers[data->active-1];
	}
}

void ui_searchbox_event(bContext *C, ARegion *ar, uiBut *but, wmEvent *event)
{
	uiSearchboxData *data= ar->regiondata;
	
	switch(event->type) {
		case WHEELUPMOUSE:
		case UPARROWKEY:
			ui_searchbox_select(C, ar, but, -1);
			break;
		case WHEELDOWNMOUSE:
		case DOWNARROWKEY:
			ui_searchbox_select(C, ar, but, 1);
			break;
		case MOUSEMOVE:
			if(BLI_in_rcti(&ar->winrct, event->x, event->y)) {
				rcti rect;
				int a;
				
				for(a=0; a<data->items.totitem; a++) {
					ui_searchbox_butrect(&rect, data, a);
					if(BLI_in_rcti(&rect, event->x - ar->winrct.xmin, event->y - ar->winrct.ymin)) {
						if( data->active!= a+1) {
							data->active= a+1;
							ui_searchbox_select(C, ar, but, 0);
							break;
						}
					}
				}
			}
			break;
	}
}

/* ar is the search box itself */
void ui_searchbox_update(bContext *C, ARegion *ar, uiBut *but, int reset)
{
	uiSearchboxData *data= ar->regiondata;
	
	/* reset vars */
	data->items.totitem= 0;
	data->items.more= 0;
	if(reset==0) {
		data->items.offset_i= data->items.offset;
	}
	else {
		data->items.offset_i= data->items.offset= 0;
		data->active= 0;
		
		/* handle active */
		if(but->search_func && but->func_arg2) {
			data->items.active= but->func_arg2;
			but->search_func(C, but->search_arg, but->editstr, &data->items);
			data->items.active= NULL;
			
			/* found active item, calculate real offset by centering it */
			if(data->items.totitem) {
				/* first case, begin of list */
				if(data->items.offset_i < data->items.maxitem) {
					data->active= data->items.offset_i+1;
					data->items.offset_i= 0;
				}
				else {
					/* second case, end of list */
					if(data->items.totitem - data->items.offset_i <= data->items.maxitem) {
						data->active= 1 + data->items.offset_i - data->items.totitem + data->items.maxitem;
						data->items.offset_i= data->items.totitem - data->items.maxitem;
					}
					else {
						/* center active item */
						data->items.offset_i -= data->items.maxitem/2;
						data->active= 1 + data->items.maxitem/2;
					}
				}
			}
			data->items.offset= data->items.offset_i;
			data->items.totitem= 0;
		}
	}
	
	/* callback */
	if(but->search_func)
		but->search_func(C, but->search_arg, but->editstr, &data->items);
	
	/* handle case where editstr is equal to one of items */
	if(reset && data->active==0) {
		int a;
		
		for(a=0; a<data->items.totitem; a++) {
			char *cpoin= strchr(data->items.names[a], '|');
			
			if(cpoin) cpoin[0]= 0;
			if(0==strcmp(but->editstr, data->items.names[a]))
				data->active= a+1;
			if(cpoin) cpoin[0]= '|';
		}
		if(data->items.totitem==1 && but->editstr[0])
			data->active= 1;
	}

	/* validate selected item */
	ui_searchbox_select(C, ar, but, 0);
	
	ED_region_tag_redraw(ar);
}

void ui_searchbox_autocomplete(bContext *C, ARegion *ar, uiBut *but, char *str)
{
	uiSearchboxData *data= ar->regiondata;

	if(str[0]) {
		data->items.autocpl= autocomplete_begin(str, ui_get_but_string_max_length(but));

		but->search_func(C, but->search_arg, but->editstr, &data->items);

		autocomplete_end(data->items.autocpl, str);
		data->items.autocpl= NULL;
	}
}

static void ui_searchbox_region_draw(const bContext *C, ARegion *ar)
{
	uiSearchboxData *data= ar->regiondata;
	
	/* pixel space */
	wmOrtho2(-0.01f, ar->winx-0.01f, -0.01f, ar->winy-0.01f);

	if(!data->noback)
		ui_draw_search_back(U.uistyles.first, NULL, &data->bbox);
	
	/* draw text */
	if(data->items.totitem) {
		rcti rect;
		int a;
				
		/* draw items */
		for(a=0; a<data->items.totitem; a++) {
			ui_searchbox_butrect(&rect, data, a);
			
			/* widget itself */
			ui_draw_menu_item(&data->fstyle, &rect, data->items.names[a], data->items.icons[a], (a+1)==data->active?UI_ACTIVE:0);
			
		}
		/* indicate more */
		if(data->items.more) {
			ui_searchbox_butrect(&rect, data, data->items.maxitem-1);
			glEnable(GL_BLEND);
			UI_icon_draw((rect.xmax-rect.xmin)/2, rect.ymin-9, ICON_TRIA_DOWN);
			glDisable(GL_BLEND);
		}
		if(data->items.offset) {
			ui_searchbox_butrect(&rect, data, 0);
			glEnable(GL_BLEND);
			UI_icon_draw((rect.xmax-rect.xmin)/2, rect.ymax-7, ICON_TRIA_UP);
			glDisable(GL_BLEND);
		}
	}
}

static void ui_searchbox_region_free(ARegion *ar)
{
	uiSearchboxData *data= ar->regiondata;
	int a;

	/* free search data */
	for(a=0; a<SEARCH_ITEMS; a++)
		MEM_freeN(data->items.names[a]);
	MEM_freeN(data->items.names);
	MEM_freeN(data->items.pointers);
	MEM_freeN(data->items.icons);
	
	MEM_freeN(data);
	ar->regiondata= NULL;
}

static void ui_block_position(wmWindow *window, ARegion *butregion, uiBut *but, uiBlock *block);

ARegion *ui_searchbox_create(bContext *C, ARegion *butregion, uiBut *but)
{
	uiStyle *style= U.uistyles.first;	// XXX pass on as arg
	static ARegionType type;
	ARegion *ar;
	uiSearchboxData *data;
	float aspect= but->block->aspect;
	float x1f, x2f, y1f, y2f;
	int x1, x2, y1, y2, winx, winy, ofsx, ofsy;
	
	/* create area region */
	ar= ui_add_temporary_region(CTX_wm_screen(C));
	
	memset(&type, 0, sizeof(ARegionType));
	type.draw= ui_searchbox_region_draw;
	type.free= ui_searchbox_region_free;
	ar->type= &type;
	
	/* create searchbox data */
	data= MEM_callocN(sizeof(uiSearchboxData), "uiSearchboxData");

	/* set font, get bb */
	data->fstyle= style->widget; /* copy struct */
	data->fstyle.align= UI_STYLE_TEXT_CENTER;
	ui_fontscale(&data->fstyle.points, aspect);
	uiStyleFontSet(&data->fstyle);
	
	ar->regiondata= data;
	
	/* special case, hardcoded feature, not draw backdrop when called from menus,
	   assume for design that popup already added it */
	if(but->block->flag & UI_BLOCK_LOOP)
		data->noback= 1;
	
	/* compute position */
	
	if(but->block->flag & UI_BLOCK_LOOP) {
		/* this case is search menu inside other menu */
		/* we copy region size */

		ar->winrct= butregion->winrct;
		
		/* widget rect, in region coords */
		data->bbox.xmin= MENU_SHADOW_SIDE;
		data->bbox.xmax= (ar->winrct.xmax-ar->winrct.xmin) - MENU_SHADOW_SIDE;
		data->bbox.ymin= MENU_SHADOW_BOTTOM;
		data->bbox.ymax= (ar->winrct.ymax-ar->winrct.ymin) - MENU_SHADOW_BOTTOM;
		
		/* check if button is lower half */
		if( but->y2 < (but->block->minx+but->block->maxx)/2 ) {
			data->bbox.ymin += (but->y2-but->y1);
		}
		else {
			data->bbox.ymax -= (but->y2-but->y1);
		}
	}
	else {
		x1f= but->x1 - 5;	/* align text with button */
		x2f= but->x2 + 5;	/* symmetrical */
		y2f= but->y1;
		y1f= y2f - uiSearchBoxhHeight();

		ofsx= (but->block->panel)? but->block->panel->ofsx: 0;
		ofsy= (but->block->panel)? but->block->panel->ofsy: 0;

		x1f += ofsx;
		x2f += ofsx;
		y1f += ofsy;
		y2f += ofsy;
	
		/* minimal width */
		if(x2f - x1f < 150) x2f= x1f+150; // XXX arbitrary
		
		/* copy to int, gets projected if possible too */
		x1= x1f; y1= y1f; x2= x2f; y2= y2f; 
		
		if(butregion) {
			if(butregion->v2d.cur.xmin != butregion->v2d.cur.xmax) {
				UI_view2d_to_region_no_clip(&butregion->v2d, x1f, y1f, &x1, &y1);
				UI_view2d_to_region_no_clip(&butregion->v2d, x2f, y2f, &x2, &y2);
			}
			
			x1 += butregion->winrct.xmin;
			x2 += butregion->winrct.xmin;
			y1 += butregion->winrct.ymin;
			y2 += butregion->winrct.ymin;
		}
		
		wm_window_get_size(CTX_wm_window(C), &winx, &winy);
		
		if(x2 > winx) {
			/* super size */
			if(x2 > winx + x1) {
				x2= winx;
				x1= 0;
			}
			else {
				x1 -= x2-winx;
				x2= winx;
			}
		}
		if(y1 < 0) {
			int newy1;
			UI_view2d_to_region_no_clip(&butregion->v2d, 0, but->y2 + ofsy, 0, &newy1);
			newy1 += butregion->winrct.ymin;

			y2= y2-y1 + newy1;
			y1= newy1;
		}

		/* widget rect, in region coords */
		data->bbox.xmin= MENU_SHADOW_SIDE;
		data->bbox.xmax= x2-x1 + MENU_SHADOW_SIDE;
		data->bbox.ymin= MENU_SHADOW_BOTTOM;
		data->bbox.ymax= y2-y1 + MENU_SHADOW_BOTTOM;
		
		/* region bigger for shadow */
		ar->winrct.xmin= x1 - MENU_SHADOW_SIDE;
		ar->winrct.xmax= x2 + MENU_SHADOW_SIDE;
		ar->winrct.ymin= y1 - MENU_SHADOW_BOTTOM;
		ar->winrct.ymax= y2;
	}
	
	/* adds subwindow */
	ED_region_init(C, ar);
	
	/* notify change and redraw */
	ED_region_tag_redraw(ar);
	
	/* prepare search data */
	data->items.maxitem= SEARCH_ITEMS;
	data->items.maxstrlen= but->hardmax;
	data->items.totitem= 0;
	data->items.names= MEM_callocN(SEARCH_ITEMS*sizeof(void *), "search names");
	data->items.pointers= MEM_callocN(SEARCH_ITEMS*sizeof(void *), "search pointers");
	data->items.icons= MEM_callocN(SEARCH_ITEMS*sizeof(int), "search icons");
	for(x1=0; x1<SEARCH_ITEMS; x1++)
		data->items.names[x1]= MEM_callocN(but->hardmax+1, "search pointers");
	
	return ar;
}

void ui_searchbox_free(bContext *C, ARegion *ar)
{
	ui_remove_temporary_region(C, CTX_wm_screen(C), ar);
}


/************************* Creating Menu Blocks **********************/

/* position block relative to but, result is in window space */
static void ui_block_position(wmWindow *window, ARegion *butregion, uiBut *but, uiBlock *block)
{
	uiBut *bt;
	uiSafetyRct *saferct;
	rctf butrct;
	float aspect;
	int xsize, ysize, xof=0, yof=0, center;
	short dir1= 0, dir2=0;
	
	/* transform to window coordinates, using the source button region/block */
	butrct.xmin= but->x1; butrct.xmax= but->x2;
	butrct.ymin= but->y1; butrct.ymax= but->y2;

	ui_block_to_window_fl(butregion, but->block, &butrct.xmin, &butrct.ymin);
	ui_block_to_window_fl(butregion, but->block, &butrct.xmax, &butrct.ymax);

	/* calc block rect */
	if(block->minx == 0.0f && block->maxx == 0.0f) {
		if(block->buttons.first) {
			block->minx= block->miny= 10000;
			block->maxx= block->maxy= -10000;
			
			bt= block->buttons.first;
			while(bt) {
				if(bt->x1 < block->minx) block->minx= bt->x1;
				if(bt->y1 < block->miny) block->miny= bt->y1;

				if(bt->x2 > block->maxx) block->maxx= bt->x2;
				if(bt->y2 > block->maxy) block->maxy= bt->y2;
				
				bt= bt->next;
			}
		}
		else {
			/* we're nice and allow empty blocks too */
			block->minx= block->miny= 0;
			block->maxx= block->maxy= 20;
		}
	}
	
	aspect= (float)(block->maxx - block->minx + 4);
	ui_block_to_window_fl(butregion, but->block, &block->minx, &block->miny);
	ui_block_to_window_fl(butregion, but->block, &block->maxx, &block->maxy);

	//block->minx-= 2.0; block->miny-= 2.0;
	//block->maxx+= 2.0; block->maxy+= 2.0;
	
	xsize= block->maxx - block->minx+4; // 4 for shadow
	ysize= block->maxy - block->miny+4;
	aspect/= (float)xsize;

	if(but) {
		int left=0, right=0, top=0, down=0;
		int winx, winy;

		wm_window_get_size(window, &winx, &winy);

		if(block->direction & UI_CENTER) center= ysize/2;
		else center= 0;

		if( butrct.xmin-xsize > 0.0) left= 1;
		if( butrct.xmax+xsize < winx) right= 1;
		if( butrct.ymin-ysize+center > 0.0) down= 1;
		if( butrct.ymax+ysize-center < winy) top= 1;
		
		dir1= block->direction & UI_DIRECTION;

		/* secundary directions */
		if(dir1 & (UI_TOP|UI_DOWN)) {
			if(dir1 & UI_LEFT) dir2= UI_LEFT;
			else if(dir1 & UI_RIGHT) dir2= UI_RIGHT;
			dir1 &= (UI_TOP|UI_DOWN);
		}

		if(dir2==0) if(dir1==UI_LEFT || dir1==UI_RIGHT) dir2= UI_DOWN;
		if(dir2==0) if(dir1==UI_TOP || dir1==UI_DOWN) dir2= UI_LEFT;
		
		/* no space at all? dont change */
		if(left || right) {
			if(dir1==UI_LEFT && left==0) dir1= UI_RIGHT;
			if(dir1==UI_RIGHT && right==0) dir1= UI_LEFT;
			/* this is aligning, not append! */
			if(dir2==UI_LEFT && right==0) dir2= UI_RIGHT;
			if(dir2==UI_RIGHT && left==0) dir2= UI_LEFT;
		}
		if(down || top) {
			if(dir1==UI_TOP && top==0) dir1= UI_DOWN;
			if(dir1==UI_DOWN && down==0) dir1= UI_TOP;
			if(dir2==UI_TOP && top==0) dir2= UI_DOWN;
			if(dir2==UI_DOWN && down==0) dir2= UI_TOP;
		}
		
		if(dir1==UI_LEFT) {
			xof= butrct.xmin - block->maxx;
			if(dir2==UI_TOP) yof= butrct.ymin - block->miny-center;
			else yof= butrct.ymax - block->maxy+center;
		}
		else if(dir1==UI_RIGHT) {
			xof= butrct.xmax - block->minx;
			if(dir2==UI_TOP) yof= butrct.ymin - block->miny-center;
			else yof= butrct.ymax - block->maxy+center;
		}
		else if(dir1==UI_TOP) {
			yof= butrct.ymax - block->miny;
			if(dir2==UI_RIGHT) xof= butrct.xmax - block->maxx;
			else xof= butrct.xmin - block->minx;
			// changed direction? 
			if((dir1 & block->direction)==0) {
				if(block->direction & UI_SHIFT_FLIPPED)
					xof+= dir2==UI_LEFT?25:-25;
				uiBlockFlipOrder(block);
			}
		}
		else if(dir1==UI_DOWN) {
			yof= butrct.ymin - block->maxy;
			if(dir2==UI_RIGHT) xof= butrct.xmax - block->maxx;
			else xof= butrct.xmin - block->minx;
			// changed direction?
			if((dir1 & block->direction)==0) {
				if(block->direction & UI_SHIFT_FLIPPED)
					xof+= dir2==UI_LEFT?25:-25;
				uiBlockFlipOrder(block);
			}
		}

		/* and now we handle the exception; no space below or to top */
		if(top==0 && down==0) {
			if(dir1==UI_LEFT || dir1==UI_RIGHT) {
				// align with bottom of screen 
				yof= ysize;
			}
		}
		
		/* or no space left or right */
		if(left==0 && right==0) {
			if(dir1==UI_TOP || dir1==UI_DOWN) {
				// align with left size of screen 
				xof= -block->minx+5;
			}
		}
		
		// apply requested offset in the block
		xof += block->xofs/block->aspect;
		yof += block->yofs/block->aspect;
	}
	
	/* apply */
	
	for(bt= block->buttons.first; bt; bt= bt->next) {
		ui_block_to_window_fl(butregion, but->block, &bt->x1, &bt->y1);
		ui_block_to_window_fl(butregion, but->block, &bt->x2, &bt->y2);

		bt->x1 += xof;
		bt->x2 += xof;
		bt->y1 += yof;
		bt->y2 += yof;

		bt->aspect= 1.0;
		// ui_check_but recalculates drawstring size in pixels
		ui_check_but(bt);
	}
	
	block->minx += xof;
	block->miny += yof;
	block->maxx += xof;
	block->maxy += yof;

	/* safety calculus */
	if(but) {
		float midx= (butrct.xmin+butrct.xmax)/2.0;
		float midy= (butrct.ymin+butrct.ymax)/2.0;
		
		/* when you are outside parent button, safety there should be smaller */
		
		// parent button to left
		if( midx < block->minx ) block->safety.xmin= block->minx-3; 
		else block->safety.xmin= block->minx-40;
		// parent button to right
		if( midx > block->maxx ) block->safety.xmax= block->maxx+3; 
		else block->safety.xmax= block->maxx+40;
		
		// parent button on bottom
		if( midy < block->miny ) block->safety.ymin= block->miny-3; 
		else block->safety.ymin= block->miny-40;
		// parent button on top
		if( midy > block->maxy ) block->safety.ymax= block->maxy+3; 
		else block->safety.ymax= block->maxy+40;
		
		// exception for switched pulldowns...
		if(dir1 && (dir1 & block->direction)==0) {
			if(dir2==UI_RIGHT) block->safety.xmax= block->maxx+3; 
			if(dir2==UI_LEFT) block->safety.xmin= block->minx-3; 
		}
		block->direction= dir1;
	}
	else {
		block->safety.xmin= block->minx-40;
		block->safety.ymin= block->miny-40;
		block->safety.xmax= block->maxx+40;
		block->safety.ymax= block->maxy+40;
	}

	/* keep a list of these, needed for pulldown menus */
	saferct= MEM_callocN(sizeof(uiSafetyRct), "uiSafetyRct");
	saferct->parent= butrct;
	saferct->safety= block->safety;
	BLI_freelistN(&block->saferct);
	if(but)
		BLI_duplicatelist(&block->saferct, &but->block->saferct);
	BLI_addhead(&block->saferct, saferct);
}

static void ui_block_region_draw(const bContext *C, ARegion *ar)
{
	uiBlock *block;

	for(block=ar->uiblocks.first; block; block=block->next)
		uiDrawBlock(C, block);
}

uiPopupBlockHandle *ui_popup_block_create(bContext *C, ARegion *butregion, uiBut *but, uiBlockCreateFunc create_func, uiBlockHandleCreateFunc handle_create_func, void *arg)
{
	wmWindow *window= CTX_wm_window(C);
	static ARegionType type;
	ARegion *ar;
	uiBlock *block;
	uiBut *bt;
	uiPopupBlockHandle *handle;
	uiSafetyRct *saferct;

	/* create handle */
	handle= MEM_callocN(sizeof(uiPopupBlockHandle), "uiPopupBlockHandle");

	/* store context for operator */
	handle->ctx_area= CTX_wm_area(C);
	handle->ctx_region= CTX_wm_region(C);
	
	/* create area region */
	ar= ui_add_temporary_region(CTX_wm_screen(C));
	handle->region= ar;

	memset(&type, 0, sizeof(ARegionType));
	type.draw= ui_block_region_draw;
	ar->type= &type;

	UI_add_region_handlers(&ar->handlers);

	/* create ui block */
	if(create_func)
		block= create_func(C, handle->region, arg);
	else
		block= handle_create_func(C, handle, arg);
	
	if(block->handle) {
		memcpy(block->handle, handle, sizeof(uiPopupBlockHandle));
		MEM_freeN(handle);
		handle= block->handle;
	}
	else
		block->handle= handle;

	ar->regiondata= handle;

	if(!block->endblock)
		uiEndBlock(C, block);

	/* if this is being created from a button */
	if(but) {
		if(ELEM(but->type, BLOCK, PULLDOWN))
			block->xofs = -2;	/* for proper alignment */

		/* only used for automatic toolbox, so can set the shift flag */
		if(but->flag & UI_MAKE_TOP) {
			block->direction= UI_TOP|UI_SHIFT_FLIPPED;
			uiBlockFlipOrder(block);
		}
		if(but->flag & UI_MAKE_DOWN) block->direction= UI_DOWN|UI_SHIFT_FLIPPED;
		if(but->flag & UI_MAKE_LEFT) block->direction |= UI_LEFT;
		if(but->flag & UI_MAKE_RIGHT) block->direction |= UI_RIGHT;

		ui_block_position(window, butregion, but, block);
	}
	else {
		/* keep a list of these, needed for pulldown menus */
		saferct= MEM_callocN(sizeof(uiSafetyRct), "uiSafetyRct");
		saferct->safety= block->safety;
		BLI_addhead(&block->saferct, saferct);
		block->flag |= UI_BLOCK_POPUP;
	}

	/* the block and buttons were positioned in window space as in 2.4x, now
	 * these menu blocks are regions so we bring it back to region space.
	 * additionally we add some padding for the menu shadow or rounded menus */
	ar->winrct.xmin= block->minx - MENU_SHADOW_SIDE;
	ar->winrct.xmax= block->maxx + MENU_SHADOW_SIDE;
	ar->winrct.ymin= block->miny - MENU_SHADOW_BOTTOM;
	ar->winrct.ymax= block->maxy + MENU_TOP;

	block->minx -= ar->winrct.xmin;
	block->maxx -= ar->winrct.xmin;
	block->miny -= ar->winrct.ymin;
	block->maxy -= ar->winrct.ymin;

	for(bt= block->buttons.first; bt; bt= bt->next) {
		bt->x1 -= ar->winrct.xmin;
		bt->x2 -= ar->winrct.xmin;
		bt->y1 -= ar->winrct.ymin;
		bt->y2 -= ar->winrct.ymin;
	}

	block->flag |= UI_BLOCK_LOOP|UI_BLOCK_MOVEMOUSE_QUIT;

	/* adds subwindow */
	ED_region_init(C, ar);

	/* get winmat now that we actually have the subwindow */
	wmSubWindowSet(window, ar->swinid);
	
	wm_subwindow_getmatrix(window, ar->swinid, block->winmat);
	
	/* notify change and redraw */
	ED_region_tag_redraw(ar);

	return handle;
}

void ui_popup_block_free(bContext *C, uiPopupBlockHandle *handle)
{
	/* XXX ton added, chrash on load file with popup open... need investigate */
	if(CTX_wm_screen(C))
		ui_remove_temporary_region(C, CTX_wm_screen(C), handle->region);
	MEM_freeN(handle);
}

/***************************** Menu Button ***************************/

static void ui_block_func_MENUSTR(bContext *C, uiLayout *layout, void *arg_str)
{
	uiBlock *block= uiLayoutGetBlock(layout);
	uiPopupBlockHandle *handle= block->handle;
	uiLayout *split, *column=NULL;
	uiBut *bt;
	MenuData *md;
	MenuEntry *entry;
	char *instr= arg_str;
	int columns, rows, a, b;

	/* compute menu data */
	md= decompose_menu_string(instr);

	/* columns and row estimation */
	columns= (md->nitems+20)/20;
	if(columns<1)
		columns= 1;
	if(columns>8)
		columns= (md->nitems+25)/25;
	
	rows= md->nitems/columns;
	if(rows<1)
		rows= 1;
	while(rows*columns<md->nitems)
		rows++;

	/* create title */
	if(md->title) {
		if(md->titleicon) {
			uiItemL(layout, md->title, md->titleicon);
		}
		else {
			uiItemL(layout, md->title, 0);
			bt= block->buttons.last;
			bt->flag= UI_TEXT_LEFT;
		}
	}

	/* inconsistent, but menus with labels do not look good flipped */
	for(a=0, b=0; a<md->nitems; a++, b++) {
		entry= &md->items[a];

		if(entry->sepr && entry->str[0])
			block->flag |= UI_BLOCK_NO_FLIP;
	}

	/* create items */
	split= uiLayoutSplit(layout, 0);

	for(a=0, b=0; a<md->nitems; a++, b++) {
		if(block->flag & UI_BLOCK_NO_FLIP)
			entry= &md->items[a];
		else
			entry= &md->items[md->nitems-a-1];
		
		/* new column on N rows or on separation label */
		if((b % rows == 0) || (entry->sepr && entry->str[0])) {
			column= uiLayoutColumn(split, 0);
			b= 0;
		}

		if(entry->sepr) {
			uiItemL(column, entry->str, entry->icon);
			bt= block->buttons.last;
			bt->flag= UI_TEXT_LEFT;
		}
		else if(entry->icon) {
			uiDefIconTextButF(block, BUTM|FLO, B_NOP, entry->icon, entry->str, 0, 0,
				UI_UNIT_X*5, UI_UNIT_Y, &handle->retvalue, (float) entry->retval, 0.0, 0, 0, "");
		}
		else {
			uiDefButF(block, BUTM|FLO, B_NOP, entry->str, 0, 0,
				UI_UNIT_X*5, UI_UNIT_X, &handle->retvalue, (float) entry->retval, 0.0, 0, 0, "");
		}
	}
	
	menudata_free(md);
}

void ui_block_func_ICONROW(bContext *C, uiLayout *layout, void *arg_but)
{
	uiBlock *block= uiLayoutGetBlock(layout);
	uiPopupBlockHandle *handle= block->handle;
	uiBut *but= arg_but;
	int a;
	
	for(a=(int)but->hardmin; a<=(int)but->hardmax; a++)
		uiDefIconButF(block, BUTM|FLO, B_NOP, but->icon+(a-but->hardmin), 0, 0, UI_UNIT_X*5, UI_UNIT_Y,
			&handle->retvalue, (float)a, 0.0, 0, 0, "");
}

void ui_block_func_ICONTEXTROW(bContext *C, uiLayout *layout, void *arg_but)
{
	uiBlock *block= uiLayoutGetBlock(layout);
	uiPopupBlockHandle *handle= block->handle;
	uiBut *but= arg_but, *bt;
	MenuData *md;
	MenuEntry *entry;
	int a;

	md= decompose_menu_string(but->str);

	/* title */
	if(md->title) {
		bt= uiDefBut(block, LABEL, 0, md->title, 0, 0, UI_UNIT_X*5, UI_UNIT_Y, NULL, 0.0, 0.0, 0, 0, "");
		bt->flag= UI_TEXT_LEFT;
	}

	/* loop through the menu options and draw them out with icons & text labels */
	for(a=0; a<md->nitems; a++) {
		entry= &md->items[md->nitems-a-1];

		if(entry->sepr)
			uiItemS(layout);
		else
			uiDefIconTextButF(block, BUTM|FLO, B_NOP, (short)((but->icon)+(entry->retval-but->hardmin)), entry->str,
				0, 0, UI_UNIT_X*5, UI_UNIT_Y, &handle->retvalue, (float) entry->retval, 0.0, 0, 0, "");
	}

	menudata_free(md);
}

#if 0
static void ui_warp_pointer(short x, short y)
{
	/* XXX 2.50 which function to use for this? */
	/* OSX has very poor mousewarp support, it sends events;
	   this causes a menu being pressed immediately ... */
	#ifndef __APPLE__
	warp_pointer(x, y);
	#endif
}
#endif

/********************* Color Button ****************/

/* picker sizes S hsize, F full size, D spacer, B button/pallette height  */
#define SPICK	110.0
#define FPICK	180.0
#define DPICK	6.0
#define BPICK	24.0

#define UI_PALETTE_TOT 16
/* note; in tot+1 the old color is stored */
static float palette[UI_PALETTE_TOT+1][3]= {
{0.93, 0.83, 0.81}, {0.88, 0.89, 0.73}, {0.69, 0.81, 0.57}, {0.51, 0.76, 0.64}, 
{0.37, 0.56, 0.61}, {0.33, 0.29, 0.55}, {0.46, 0.21, 0.51}, {0.40, 0.12, 0.18}, 
{1.0, 1.0, 1.0}, {0.85, 0.85, 0.85}, {0.7, 0.7, 0.7}, {0.56, 0.56, 0.56}, 
{0.42, 0.42, 0.42}, {0.28, 0.28, 0.28}, {0.14, 0.14, 0.14}, {0.0, 0.0, 0.0}
};  

/* for picker, while editing hsv */
void ui_set_but_hsv(uiBut *but)
{
	float col[3];
	
	hsv_to_rgb(but->hsv[0], but->hsv[1], but->hsv[2], col, col+1, col+2);
	ui_set_but_vectorf(but, col);
}

static void update_picker_hex(uiBlock *block, float *rgb)
{
	uiBut *bt;
	char col[16];
	
	sprintf(col, "%02X%02X%02X", (unsigned int)(rgb[0]*255.0), (unsigned int)(rgb[1]*255.0), (unsigned int)(rgb[2]*255.0));
	
	// this updates button strings, is hackish... but button pointers are on stack of caller function

	for(bt= block->buttons.first; bt; bt= bt->next) {
		if(strcmp(bt->str, "Hex: ")==0)
			strcpy(bt->poin, col);

		ui_check_but(bt);
	}
}

/* also used by small picker, be careful with name checks below... */
void ui_update_block_buts_hsv(uiBlock *block, float *hsv)
{
	uiBut *bt;
	float r, g, b;
	float rgb[3];
	
	// this updates button strings, is hackish... but button pointers are on stack of caller function
	hsv_to_rgb(hsv[0], hsv[1], hsv[2], &r, &g, &b);
	
	rgb[0] = r; rgb[1] = g; rgb[2] = b;
	update_picker_hex(block, rgb);

	for(bt= block->buttons.first; bt; bt= bt->next) {
		if(ELEM(bt->type, HSVCUBE, HSVCIRCLE)) {
			VECCOPY(bt->hsv, hsv);
			ui_set_but_hsv(bt);
		}
		else if(bt->str[1]==' ') {
			if(bt->str[0]=='R') {
				ui_set_but_val(bt, r);
			}
			else if(bt->str[0]=='G') {
				ui_set_but_val(bt, g);
			}
			else if(bt->str[0]=='B') {
				ui_set_but_val(bt, b);
			}
			else if(bt->str[0]=='H') {
				ui_set_but_val(bt, hsv[0]);
			}
			else if(bt->str[0]=='S') {
				ui_set_but_val(bt, hsv[1]);
			}
			else if(bt->str[0]=='V') {
				ui_set_but_val(bt, hsv[2]);
			}
		}		

		ui_check_but(bt);
	}
}

static void ui_update_block_buts_hex(uiBlock *block, char *hexcol)
{
	uiBut *bt;
	float r=0, g=0, b=0;
	float h, s, v;
	
	
	// this updates button strings, is hackish... but button pointers are on stack of caller function
	hex_to_rgb(hexcol, &r, &g, &b);
	rgb_to_hsv(r, g, b, &h, &s, &v);

	for(bt= block->buttons.first; bt; bt= bt->next) {
		if(bt->type==HSVCUBE) {
			bt->hsv[0] = h;
			bt->hsv[1] = s;			
			bt->hsv[2] = v;
			ui_set_but_hsv(bt);
		}
		else if(bt->str[1]==' ') {
			if(bt->str[0]=='R') {
				ui_set_but_val(bt, r);
			}
			else if(bt->str[0]=='G') {
				ui_set_but_val(bt, g);
			}
			else if(bt->str[0]=='B') {
				ui_set_but_val(bt, b);
			}
			else if(bt->str[0]=='H') {
				ui_set_but_val(bt, h);
			}
			else if(bt->str[0]=='S') {
				ui_set_but_val(bt, s);
			}
			else if(bt->str[0]=='V') {
				ui_set_but_val(bt, v);
			}
		}

		ui_check_but(bt);
	}
}

/* bt1 is palette but, col1 is original color */
/* callback to copy from/to palette */
static void do_palette_cb(bContext *C, void *bt1, void *col1)
{
	wmWindow *win= CTX_wm_window(C);
	uiBut *but1= (uiBut *)bt1;
	uiPopupBlockHandle *popup= but1->block->handle;
	float *col= (float *)col1;
	float *fp, hsv[3];
	
	fp= (float *)but1->poin;
	
	if(win->eventstate->ctrl) {
		VECCOPY(fp, col);
	}
	else {
		VECCOPY(col, fp);
	}
	
	rgb_to_hsv(col[0], col[1], col[2], hsv, hsv+1, hsv+2);
	ui_update_block_buts_hsv(but1->block, hsv);
	update_picker_hex(but1->block, col);

	if(popup)
		popup->menuretval= UI_RETURN_UPDATE;
}

static void do_hsv_cb(bContext *C, void *bt1, void *unused)
{
	uiBut *but1= (uiBut *)bt1;
	uiPopupBlockHandle *popup= but1->block->handle;

	if(popup)
		popup->menuretval= UI_RETURN_UPDATE;
}

/* bt1 is num but, hsv1 is pointer to original color in hsv space*/
/* callback to handle changes in num-buts in picker */
static void do_palette1_cb(bContext *C, void *bt1, void *hsv1)
{
	uiBut *but1= (uiBut *)bt1;
	uiPopupBlockHandle *popup= but1->block->handle;
	float *hsv= (float *)hsv1;
	float *fp= NULL;
	
	if(but1->str[1]==' ') {
		if(but1->str[0]=='R') fp= (float *)but1->poin;
		else if(but1->str[0]=='G') fp= ((float *)but1->poin)-1;
		else if(but1->str[0]=='B') fp= ((float *)but1->poin)-2;
	}
	if(fp) {
		rgb_to_hsv(fp[0], fp[1], fp[2], hsv, hsv+1, hsv+2);
	} 
	ui_update_block_buts_hsv(but1->block, hsv);

	if(popup)
		popup->menuretval= UI_RETURN_UPDATE;
}

/* bt1 is num but, col1 is pointer to original color */
/* callback to handle changes in num-buts in picker */
static void do_palette2_cb(bContext *C, void *bt1, void *col1)
{
	uiBut *but1= (uiBut *)bt1;
	uiPopupBlockHandle *popup= but1->block->handle;
	float *rgb= (float *)col1;
	float *fp= NULL;
	
	if(but1->str[1]==' ') {
		if(but1->str[0]=='H') fp= (float *)but1->poin;
		else if(but1->str[0]=='S') fp= ((float *)but1->poin)-1;
		else if(but1->str[0]=='V') fp= ((float *)but1->poin)-2;
	}
	if(fp) {
		hsv_to_rgb(fp[0], fp[1], fp[2], rgb, rgb+1, rgb+2);
	} 
	ui_update_block_buts_hsv(but1->block, fp);

	if(popup)
		popup->menuretval= UI_RETURN_UPDATE;
}

static void do_palette_hex_cb(bContext *C, void *bt1, void *hexcl)
{
	uiBut *but1= (uiBut *)bt1;
	uiPopupBlockHandle *popup= but1->block->handle;
	char *hexcol= (char *)hexcl;
	
	ui_update_block_buts_hex(but1->block, hexcol);	

	if(popup)
		popup->menuretval= UI_RETURN_UPDATE;
}

/* used for both 3d view and image window */
static void do_palette_sample_cb(bContext *C, void *bt1, void *col1)	/* frontbuf */
{
	/* XXX 2.50 this should become an operator? */
#if 0
	uiBut *but1= (uiBut *)bt1;
	uiBut *but;
	float tempcol[4];
	int x=0, y=0;
	short mval[2];
	float hsv[3];
	short capturing;
	int oldcursor;
	Window *win;
	unsigned short dev;
	
	oldcursor=get_cursor();
	win=winlay_get_active_window();
	
	while (get_mbut() & L_MOUSE) UI_wait_for_statechange();
	
	SetBlenderCursor(BC_EYEDROPPER_CURSOR);
	
	/* loop and wait for a mouse click */
	capturing = TRUE;
	while(capturing) {
		char ascii;
		short val;
		
		dev = extern_qread_ext(&val, &ascii);
		
		if(dev==INPUTCHANGE) break;
		if(get_mbut() & R_MOUSE) break;
		else if(get_mbut() & L_MOUSE) {
			uiGetMouse(mywinget(), mval);
			x= mval[0]; y= mval[1];
			
			capturing = FALSE;
			break;
		}
		else if(dev==ESCKEY) break;
	}
	window_set_cursor(win, oldcursor);
	
	if(capturing) return;
	
	if(x<0 || y<0) return;
	
	/* if we've got a glick, use OpenGL to sample the color under the mouse pointer */
	glReadBuffer(GL_FRONT);
	glReadPixels(x, y, 1, 1, GL_RGBA, GL_FLOAT, tempcol);
	glReadBuffer(GL_BACK);
	
	/* and send that color back to the picker */
	rgb_to_hsv(tempcol[0], tempcol[1], tempcol[2], hsv, hsv+1, hsv+2);
	ui_update_block_buts_hsv(but1->block, hsv);
	update_picker_hex(but1->block, tempcol);
	
	for (but= but1->block->buttons.first; but; but= but->next) {
		ui_check_but(but);
		ui_draw_but(but);
	}
	
	but= but1->block->buttons.first;
	ui_block_flush_back(but->block);
#endif
}

/* color picker, Gimp version. mode: 'f' = floating panel, 'p' =  popup */
/* col = read/write to, hsv/old/hexcol = memory for temporal use */
void uiBlockPickerButtons(uiBlock *block, float *col, float *hsv, float *old, char *hexcol, char mode, short retval)
{
	uiBut *bt;
	float h, offs;
	int a;

	VECCOPY(old, col);	// old color stored there, for palette_cb to work
	
	// the cube intersection
	bt= uiDefButF(block, HSVCUBE, retval, "",	0,DPICK+BPICK,FPICK,FPICK, col, 0.0, 0.0, 2, 0, "");
	uiButSetFunc(bt, do_hsv_cb, bt, NULL);

	bt= uiDefButF(block, HSVCUBE, retval, "",	0,0,FPICK,BPICK, col, 0.0, 0.0, 3, 0, "");
	uiButSetFunc(bt, do_hsv_cb, bt, NULL);

	// palette
	
	bt=uiDefButF(block, COL, retval, "",		FPICK+DPICK, 0, BPICK,BPICK, old, 0.0, 0.0, -1, 0, "Old color, click to restore");
	uiButSetFunc(bt, do_palette_cb, bt, col);
	uiDefButF(block, COL, retval, "",		FPICK+DPICK, BPICK+DPICK, BPICK,60-BPICK-DPICK, col, 0.0, 0.0, -1, 0, "Active color");

	h= (DPICK+BPICK+FPICK-64)/(UI_PALETTE_TOT/2.0);
	uiBlockBeginAlign(block);
	for(a= -1+UI_PALETTE_TOT/2; a>=0; a--) {
		bt= uiDefButF(block, COL, retval, "",	FPICK+DPICK, 65.0+(float)a*h, BPICK/2, h, palette[a+UI_PALETTE_TOT/2], 0.0, 0.0, -1, 0, "Click to choose, hold CTRL to store in palette");
		uiButSetFunc(bt, do_palette_cb, bt, col);
		bt= uiDefButF(block, COL, retval, "",	FPICK+DPICK+BPICK/2, 65.0+(float)a*h, BPICK/2, h, palette[a], 0.0, 0.0, -1, 0, "Click to choose, hold CTRL to store in palette");		
		uiButSetFunc(bt, do_palette_cb, bt, col);
	}
	uiBlockEndAlign(block);
	
	// buttons
	rgb_to_hsv(col[0], col[1], col[2], hsv, hsv+1, hsv+2);
	sprintf(hexcol, "%02X%02X%02X", (unsigned int)(col[0]*255.0), (unsigned int)(col[1]*255.0), (unsigned int)(col[2]*255.0));	

	offs= FPICK+2*DPICK+BPICK;

	/* note; made this a TOG now, with NULL pointer. Is because BUT now gets handled with a afterfunc */
	bt= uiDefIconTextBut(block, TOG, UI_RETURN_OK, ICON_EYEDROPPER, "Sample", offs+55, 170, 85, 20, NULL, 0, 0, 0, 0, "Sample the color underneath the following mouse click (ESC or RMB to cancel)");
	uiButSetFunc(bt, do_palette_sample_cb, bt, col);
	uiButSetFlag(bt, UI_TEXT_LEFT);
	
	bt= uiDefBut(block, TEX, retval, "Hex: ", offs, 140, 140, 20, hexcol, 0, 8, 0, 0, "Hex triplet for color (#RRGGBB)");
	uiButSetFunc(bt, do_palette_hex_cb, bt, hexcol);

	uiBlockBeginAlign(block);
	bt= uiDefButF(block, NUMSLI, retval, "R ",	offs, 110, 140,20, col, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette1_cb, bt, hsv);
	bt= uiDefButF(block, NUMSLI, retval, "G ",	offs, 90, 140,20, col+1, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette1_cb, bt, hsv);
	bt= uiDefButF(block, NUMSLI, retval, "B ",	offs, 70, 140,20, col+2, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette1_cb, bt, hsv);
	
	uiBlockBeginAlign(block);
	bt= uiDefButF(block, NUMSLI, retval, "H ",	offs, 40, 140,20, hsv, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette2_cb, bt, col);
	bt= uiDefButF(block, NUMSLI, retval, "S ",	offs, 20, 140,20, hsv+1, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette2_cb, bt, col);
	bt= uiDefButF(block, NUMSLI, retval, "V ",	offs, 0, 140,20, hsv+2, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette2_cb, bt, col);
	uiBlockEndAlign(block);
}

/* bt1 is num but, hsv1 is pointer to original color in hsv space*/
/* callback to handle changes */
static void do_picker_small_cb(bContext *C, void *bt1, void *hsv1)
{
	uiBut *but1= (uiBut *)bt1;
	uiPopupBlockHandle *popup= but1->block->handle;
	float *hsv= (float *)hsv1;
	float *fp= NULL;
	
	fp= (float *)but1->poin;
	rgb_to_hsv(fp[0], fp[1], fp[2], hsv, hsv+1, hsv+2);

	ui_update_block_buts_hsv(but1->block, hsv);
	
	if(popup)
		popup->menuretval= UI_RETURN_UPDATE;
}

/* picker sizes S hsize, F full size, D spacer, B button/pallette height  */
#define SPICK1	150.0
#define DPICK1	6.0

/* only the color, a HS circle and V slider */
static void uiBlockPickerSmall(uiBlock *block, float *col, float *hsv, float *old, char *hexcol, char mode, short retval)
{
	uiBut *bt;
	
	VECCOPY(old, col);	// old color stored there, for palette_cb to work
	
	/* HS circle */
	bt= uiDefButF(block, HSVCIRCLE, retval, "",	0, 0,SPICK1,SPICK1, col, 0.0, 0.0, 0, 0, "");
	uiButSetFunc(bt, do_picker_small_cb, bt, hsv);

	/* value */
	bt= uiDefButF(block, HSVCUBE, retval, "",	SPICK1+DPICK1,0,14,SPICK1, col, 0.0, 0.0, 4, 0, "");
	uiButSetFunc(bt, do_picker_small_cb, bt, hsv);
}


static void picker_new_hide_reveal(uiBlock *block, short colormode)
{
	uiBut *bt;
	
	/* tag buttons */
	for(bt= block->buttons.first; bt; bt= bt->next) {
		
		if(bt->type==NUMSLI || bt->type==TEX) {
			if( bt->str[1]=='e') {
				if(colormode==2) bt->flag &= ~UI_HIDDEN;
				else bt->flag |= UI_HIDDEN;
			}
			else if( ELEM3(bt->str[0], 'R', 'G', 'B')) {
				if(colormode==0) bt->flag &= ~UI_HIDDEN;
				else bt->flag |= UI_HIDDEN;
			}
			else if( ELEM3(bt->str[0], 'H', 'S', 'V')) {
				if(colormode==1) bt->flag &= ~UI_HIDDEN;
				else bt->flag |= UI_HIDDEN;
			}
		}
	}
}

static void do_picker_new_mode_cb(bContext *C, void *bt1, void *colv)
{
	uiBut *bt= bt1;
	short colormode= ui_get_but_val(bt);

	picker_new_hide_reveal(bt->block, colormode);
}


/* a HS circle, V slider, rgb/hsv/hex sliders */
static void uiBlockPickerNew(uiBlock *block, float *col, float *hsv, float *old, char *hexcol, char mode, short retval)
{
	static short colormode= 0;	/* temp? 0=rgb, 1=hsv, 2=hex */
	uiBut *bt;
	int width;
	
	VECCOPY(old, col);	// old color stored there, for palette_cb to work
	
	/* HS circle */
	bt= uiDefButF(block, HSVCIRCLE, retval, "",	0, 0,SPICK1,SPICK1, col, 0.0, 0.0, 0, 0, "");
	uiButSetFunc(bt, do_picker_small_cb, bt, hsv);
	
	/* value */
	bt= uiDefButF(block, HSVCUBE, retval, "",	SPICK1+DPICK1,0,14,SPICK1, col, 0.0, 0.0, 4, 0, "");
	uiButSetFunc(bt, do_picker_small_cb, bt, hsv);
	
	/* mode */
	width= (SPICK1+DPICK1+14)/3;
	uiBlockBeginAlign(block);
	bt= uiDefButS(block, ROW, retval, "RGB",	0, -30, width, 19, &colormode, 0.0, 0.0, 0, 0, "");
	uiButSetFunc(bt, do_picker_new_mode_cb, bt, col);
	bt= uiDefButS(block, ROW, retval, "HSV",	width, -30, width, 19, &colormode, 0.0, 1.0, 0, 0, "");
	uiButSetFunc(bt, do_picker_new_mode_cb, bt, hsv);
	bt= uiDefButS(block, ROW, retval, "Hex",	2*width, -30, width, 19, &colormode, 0.0, 2.0, 0, 0, "");
	uiButSetFunc(bt, do_picker_new_mode_cb, bt, hexcol);
	uiBlockEndAlign(block);
	
	/* sliders or hex */
	width= (SPICK1+DPICK1+14);
	rgb_to_hsv(col[0], col[1], col[2], hsv, hsv+1, hsv+2);
	sprintf(hexcol, "%02X%02X%02X", (unsigned int)(col[0]*255.0), (unsigned int)(col[1]*255.0), (unsigned int)(col[2]*255.0));	

	uiBlockBeginAlign(block);
	bt= uiDefButF(block, NUMSLI, 0, "R ",	0, -60, width, 19, col, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette1_cb, bt, hsv);
	bt= uiDefButF(block, NUMSLI, 0, "G ",	0, -80, width, 19, col+1, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette1_cb, bt, hsv);
	bt= uiDefButF(block, NUMSLI, 0, "B ",	0, -100, width, 19, col+2, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette1_cb, bt, hsv);
	uiBlockEndAlign(block);

	uiBlockBeginAlign(block);
	bt= uiDefButF(block, NUMSLI, 0, "H ",	0, -60, width, 19, hsv, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette2_cb, bt, col);
	bt= uiDefButF(block, NUMSLI, 0, "S ",	0, -80, width, 19, hsv+1, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette2_cb, bt, col);
	bt= uiDefButF(block, NUMSLI, 0, "V ",	0, -100, width, 19, hsv+2, 0.0, 1.0, 10, 3, "");
	uiButSetFunc(bt, do_palette2_cb, bt, col);
	uiBlockEndAlign(block);

	bt= uiDefBut(block, TEX, 0, "Hex: ", 0, -80, width, 19, hexcol, 0, 8, 0, 0, "Hex triplet for color (#RRGGBB)");
	uiButSetFunc(bt, do_palette_hex_cb, bt, hexcol);

	picker_new_hide_reveal(block, colormode);
}


static int ui_picker_small_wheel(const bContext *C, uiBlock *block, wmEvent *event)
{
	float add= 0.0f;
	
	if(event->type==WHEELUPMOUSE)
		add= 0.05f;
	else if(event->type==WHEELDOWNMOUSE)
		add= -0.05f;
	
	if(add!=0.0f) {
		uiBut *but;
		
		for(but= block->buttons.first; but; but= but->next) {
			if(but->type==HSVCUBE && but->active==NULL) {
				uiPopupBlockHandle *popup= block->handle;
				float col[3];
				
				ui_get_but_vectorf(but, col);
				
				rgb_to_hsv(col[0], col[1], col[2], but->hsv, but->hsv+1, but->hsv+2);
				but->hsv[2]= CLAMPIS(but->hsv[2]+add, 0.0f, 1.0f);
				hsv_to_rgb(but->hsv[0], but->hsv[1], but->hsv[2], col, col+1, col+2);

				ui_set_but_vectorf(but, col);
				
				ui_update_block_buts_hsv(block, but->hsv);
				if(popup)
					popup->menuretval= UI_RETURN_UPDATE;
				
				return 1;
			}
		}
	}
	return 0;
}

uiBlock *ui_block_func_COL(bContext *C, uiPopupBlockHandle *handle, void *arg_but)
{
	wmWindow *win= CTX_wm_window(C); // XXX temp, needs to become keymap to detect type?
	uiBut *but= arg_but;
	uiBlock *block;
	static float hsvcol[3], oldcol[3];
	static char hexcol[128];
	
	block= uiBeginBlock(C, handle->region, "colorpicker", UI_EMBOSS);
	
	VECCOPY(handle->retvec, but->editvec);
	if(win->eventstate->shift) {
		uiBlockPickerButtons(block, handle->retvec, hsvcol, oldcol, hexcol, 'p', 0);
		block->flag= UI_BLOCK_LOOP|UI_BLOCK_REDRAW|UI_BLOCK_KEEP_OPEN;
		uiBoundsBlock(block, 3);
	}
	else if(win->eventstate->alt) {
		uiBlockPickerSmall(block, handle->retvec, hsvcol, oldcol, hexcol, 'p', 0);
		block->flag= UI_BLOCK_LOOP|UI_BLOCK_REDRAW|UI_BLOCK_RET_1|UI_BLOCK_OUT_1;
		uiBoundsBlock(block, 10);
		
		block->block_event_func= ui_picker_small_wheel;
	}
	else {
		uiBlockPickerNew(block, handle->retvec, hsvcol, oldcol, hexcol, 'p', 0);
		block->flag= UI_BLOCK_LOOP|UI_BLOCK_REDRAW|UI_BLOCK_KEEP_OPEN;
		uiBoundsBlock(block, 10);
		
		block->block_event_func= ui_picker_small_wheel;
	}
	
	
	/* and lets go */
	block->direction= UI_TOP;
	
	return block;
}

/* ******************** Color band *************** */

static int vergcband(const void *a1, const void *a2)
{
	const CBData *x1=a1, *x2=a2;
	
	if( x1->pos > x2->pos ) return 1;
	else if( x1->pos < x2->pos) return -1;
	return 0;
}

static void colorband_pos_cb(bContext *C, void *coba_v, void *unused_v)
{
	ColorBand *coba= coba_v;
	int a;
	
	if(coba->tot<2) return;
	
	for(a=0; a<coba->tot; a++) coba->data[a].cur= a;
	qsort(coba->data, coba->tot, sizeof(CBData), vergcband);
	for(a=0; a<coba->tot; a++) {
		if(coba->data[a].cur==coba->cur) {
			/* if(coba->cur!=a) addqueue(curarea->win, REDRAW, 0); */	/* button cur */
			coba->cur= a;
			break;
		}
	}
}

static void colorband_add_cb(bContext *C, void *coba_v, void *unused_v)
{
	ColorBand *coba= coba_v;
	
	if(coba->tot < MAXCOLORBAND-1) coba->tot++;
	coba->cur= coba->tot-1;
	
	colorband_pos_cb(C, coba, NULL);
//	BIF_undo_push("Add colorband");
	
}

static void colorband_del_cb(bContext *C, void *coba_v, void *unused_v)
{
	ColorBand *coba= coba_v;
	int a;
	
	if(coba->tot<2) return;
	
	for(a=coba->cur; a<coba->tot; a++) {
		coba->data[a]= coba->data[a+1];
	}
	if(coba->cur) coba->cur--;
	coba->tot--;
	
//	BIF_undo_push("Delete colorband");
//	BIF_preview_changed(ID_TE);
}

void uiBlockColorbandButtons(uiBlock *block, ColorBand *coba, rctf *butr, int event)
{
	CBData *cbd;
	uiBut *bt;
	float unit= (butr->xmax-butr->xmin)/14.0f;
	float xs= butr->xmin;
	
	cbd= coba->data + coba->cur;
	
	uiBlockBeginAlign(block);
	uiDefButF(block, COL, event,		"",			xs,butr->ymin+20.0f,2.0f*unit,20,				&(cbd->r), 0, 0, 0, 0, "");
	uiDefButF(block, NUM, event,		"A:",		xs+2.0f*unit,butr->ymin+20.0f,4.0f*unit,20,	&(cbd->a), 0.0f, 1.0f, 10, 2, "");
	bt= uiDefBut(block, BUT, event,	"Add",		xs+6.0f*unit,butr->ymin+20.0f,2.0f*unit,20,	NULL, 0, 0, 0, 0, "Adds a new color position to the colorband");
	uiButSetFunc(bt, colorband_add_cb, coba, NULL);
	bt= uiDefBut(block, BUT, event,	"Del",		xs+8.0f*unit, butr->ymin+20.0f, 2.0f*unit, 20,	NULL, 0, 0, 0, 0, "Deletes the active position");
	uiButSetFunc(bt, colorband_del_cb, coba, NULL);
	
	uiDefButS(block, MENU, event,		"Interpolation %t|Ease %x1|Cardinal %x3|Linear %x0|B-Spline %x2|Constant %x4",
			  xs + 10.0f*unit, butr->ymin+20.0f, unit*4.0f, 20,		&coba->ipotype, 0.0, 0.0, 0, 0, "Sets interpolation type");
	
	uiDefBut(block, BUT_COLORBAND, event, "",		xs, butr->ymin, butr->xmax-butr->xmin, 20.0f, coba, 0, 0, 0, 0, "");
	uiBlockEndAlign(block);
	
}


/************************ Popup Menu Memory ****************************/

static int ui_popup_menu_hash(char *str)
{
	return BLI_ghashutil_strhash(str);
}

/* but == NULL read, otherwise set */
uiBut *ui_popup_menu_memory(uiBlock *block, uiBut *but)
{
	static char mem[256], first=1;
	int hash= block->puphash;
	
	if(first) {
		/* init */
		memset(mem, -1, sizeof(mem));
		first= 0;
	}

	if(but) {
		/* set */
		mem[hash & 255 ]= BLI_findindex(&block->buttons, but);
		return NULL;
	}
	else {
		/* get */
		return BLI_findlink(&block->buttons, mem[hash & 255]);
	}
}

/******************** Popup Menu with callback or string **********************/

struct uiPopupMenu {
	uiBlock *block;
	uiLayout *layout;
	uiBut *but;

	int mx, my, popup, slideout;
	int startx, starty, maxrow;

	uiMenuCreateFunc menu_func;
	void *menu_arg;
};

static uiBlock *ui_block_func_POPUP(bContext *C, uiPopupBlockHandle *handle, void *arg_pup)
{
	uiBlock *block;
	uiBut *bt;
	ScrArea *sa;
	ARegion *ar;
	uiPopupMenu *pup= arg_pup;
	int offset, direction, minwidth, flip;

	if(pup->menu_func) {
		pup->block->handle= handle;
		pup->menu_func(C, pup->layout, pup->menu_arg);
		pup->block->handle= NULL;
	}

	if(pup->but) {
		/* minimum width to enforece */
		minwidth= pup->but->x2 - pup->but->x1;

		if(pup->but->type == PULLDOWN || pup->but->menu_create_func) {
			direction= UI_DOWN;
			flip= 1;
		}
		else {
			direction= UI_TOP;
			flip= 0;
		}
	}
	else {
		minwidth= 50;
		direction= UI_DOWN;
		flip= 1;
	}

	block= pup->block;
	
	/* in some cases we create the block before the region,
	   so we set it delayed here if necessary */
	if(BLI_findindex(&handle->region->uiblocks, block) == -1)
		uiBlockSetRegion(block, handle->region);

	block->direction= direction;

	uiBlockLayoutResolve(block, NULL, NULL);

	if(pup->popup) {
		uiBlockSetFlag(block, UI_BLOCK_LOOP|UI_BLOCK_REDRAW|UI_BLOCK_NUMSELECT|UI_BLOCK_RET_1);
		uiBlockSetDirection(block, direction);

		/* offset the mouse position, possibly based on earlier selection */
		offset= 1.5*MENU_BUTTON_HEIGHT;

		if(block->flag & UI_BLOCK_POPUP_MEMORY) {
			bt= ui_popup_menu_memory(block, NULL);

			if(bt)
				offset= -bt->y1 - 0.5f*MENU_BUTTON_HEIGHT;
		}

		block->minbounds= minwidth;
		uiMenuPopupBoundsBlock(block, 1, 20, offset);
	}
	else {
		/* for a header menu we set the direction automatic */
		if(!pup->slideout && flip) {
			sa= CTX_wm_area(C);
			ar= CTX_wm_region(C);

			if(sa && sa->headertype==HEADERDOWN) {
				if(ar && ar->regiontype == RGN_TYPE_HEADER) {
					uiBlockSetDirection(block, UI_TOP);
					uiBlockFlipOrder(block);
				}
			}
		}

		block->minbounds= minwidth;
		uiTextBoundsBlock(block, 50);
	}

	/* if menu slides out of other menu, override direction */
	if(pup->slideout)
		uiBlockSetDirection(block, UI_RIGHT);

	uiEndBlock(C, block);

	return pup->block;
}

uiPopupBlockHandle *ui_popup_menu_create(bContext *C, ARegion *butregion, uiBut *but, uiMenuCreateFunc menu_func, void *arg, char *str)
{
	wmWindow *window= CTX_wm_window(C);
	uiStyle *style= U.uistyles.first;
	uiPopupBlockHandle *handle;
	uiPopupMenu *pup;
	
	pup= MEM_callocN(sizeof(uiPopupMenu), "menu dummy");
	pup->block= uiBeginBlock(C, NULL, "ui_button_menu_create", UI_EMBOSSP);
	pup->layout= uiBlockLayout(pup->block, UI_LAYOUT_VERTICAL, UI_LAYOUT_MENU, 0, 0, 200, 0, style);
	pup->slideout= (but && (but->block->flag & UI_BLOCK_LOOP));
	pup->but= but;
	uiLayoutSetOperatorContext(pup->layout, WM_OP_INVOKE_REGION_WIN);

	if(!but) {
		/* no button to start from, means we are a popup */
		pup->mx= window->eventstate->x;
		pup->my= window->eventstate->y;
		pup->popup= 1;
	}

	if(str) {
		/* menu is created from a string */
		pup->menu_func= ui_block_func_MENUSTR;
		pup->menu_arg= str;
	}
	else {
		/* menu is created from a callback */
		pup->menu_func= menu_func;
		pup->menu_arg= arg;
	}
	
	handle= ui_popup_block_create(C, butregion, but, NULL, ui_block_func_POPUP, pup);

	if(!but) {
		handle->popup= 1;

		UI_add_popup_handlers(C, &window->modalhandlers, handle);
		WM_event_add_mousemove(C);
	}
	
	MEM_freeN(pup);

	return handle;
}

/******************** Popup Menu API with begin and end ***********************/

/* only return handler, and set optional title */
uiPopupMenu *uiPupMenuBegin(bContext *C, const char *title, int icon)
{
	uiStyle *style= U.uistyles.first;
	uiPopupMenu *pup= MEM_callocN(sizeof(uiPopupMenu), "popup menu");
	uiBut *but;
	
	pup->block= uiBeginBlock(C, NULL, "uiPupMenuBegin", UI_EMBOSSP);
	pup->block->flag |= UI_BLOCK_POPUP_MEMORY;
	pup->block->puphash= ui_popup_menu_hash((char*)title);
	pup->layout= uiBlockLayout(pup->block, UI_LAYOUT_VERTICAL, UI_LAYOUT_MENU, 0, 0, 200, 0, style);
	uiLayoutSetOperatorContext(pup->layout, WM_OP_EXEC_REGION_WIN);

	/* create in advance so we can let buttons point to retval already */
	pup->block->handle= MEM_callocN(sizeof(uiPopupBlockHandle), "uiPopupBlockHandle");
	
	/* create title button */
	if(title && title[0]) {
		char titlestr[256];
		
		if(icon) {
			sprintf(titlestr, " %s", title);
			uiDefIconTextBut(pup->block, LABEL, 0, icon, titlestr, 0, 0, 200, MENU_BUTTON_HEIGHT, NULL, 0.0, 0.0, 0, 0, "");
		}
		else {
			but= uiDefBut(pup->block, LABEL, 0, (char*)title, 0, 0, 200, MENU_BUTTON_HEIGHT, NULL, 0.0, 0.0, 0, 0, "");
			but->flag= UI_TEXT_LEFT;
		}
	}

	return pup;
}

/* set the whole structure to work */
void uiPupMenuEnd(bContext *C, uiPopupMenu *pup)
{
	wmWindow *window= CTX_wm_window(C);
	uiPopupBlockHandle *menu;
	
	pup->popup= 1;
	pup->mx= window->eventstate->x;
	pup->my= window->eventstate->y;
	
	menu= ui_popup_block_create(C, NULL, NULL, NULL, ui_block_func_POPUP, pup);
	menu->popup= 1;
	
	UI_add_popup_handlers(C, &window->modalhandlers, menu);
	WM_event_add_mousemove(C);
	
	MEM_freeN(pup);
}

uiLayout *uiPupMenuLayout(uiPopupMenu *pup)
{
	return pup->layout;
}

/*************************** Standard Popup Menus ****************************/

static void operator_name_cb(bContext *C, void *arg, int retval)
{
	const char *opname= arg;

	if(opname && retval > 0)
		WM_operator_name_call(C, opname, WM_OP_EXEC_DEFAULT, NULL);
}

static void operator_cb(bContext *C, void *arg, int retval)
{
	wmOperator *op= arg;
	
	if(op && retval > 0)
		WM_operator_call(C, op);
	else
		WM_operator_free(op);
}

static void confirm_cancel_operator(void *opv)
{
	WM_operator_free(opv);
}

static void vconfirm_opname(bContext *C, char *opname, char *title, char *itemfmt, va_list ap)
{
	uiPopupBlockHandle *handle;
	char *s, buf[512];

	s= buf;
	if (title) s+= sprintf(s, "%s%%t|", title);
	vsprintf(s, itemfmt, ap);

	handle= ui_popup_menu_create(C, NULL, NULL, NULL, NULL, buf);

	handle->popup_func= operator_name_cb;
	handle->popup_arg= opname;
}

static void confirm_operator(bContext *C, wmOperator *op, char *title, char *item)
{
	uiPopupBlockHandle *handle;
	char *s, buf[512];
	
	s= buf;
	if (title) s+= sprintf(s, "%s%%t|%s", title, item);
	
	handle= ui_popup_menu_create(C, NULL, NULL, NULL, NULL, buf);

	handle->popup_func= operator_cb;
	handle->popup_arg= op;
	handle->cancel_func= confirm_cancel_operator;
}

void uiPupMenuOkee(bContext *C, char *opname, char *str, ...)
{
	va_list ap;
	char titlestr[256];

	sprintf(titlestr, "OK? %%i%d", ICON_QUESTION);

	va_start(ap, str);
	vconfirm_opname(C, opname, titlestr, str, ap);
	va_end(ap);
}

void uiPupMenuSaveOver(bContext *C, wmOperator *op, char *filename)
{
	size_t len= strlen(filename);

	if(len==0)
		return;

	if(filename[len-1]=='/' || filename[len-1]=='\\') {
		uiPupMenuError(C, "Cannot overwrite a directory");
		WM_operator_free(op);
		return;
	}
	if(BLI_exists(filename)==0)
		operator_cb(C, op, 1);
	else
		confirm_operator(C, op, "Save Over", filename);
}

void uiPupMenuNotice(bContext *C, char *str, ...)
{
	va_list ap;

	va_start(ap, str);
	vconfirm_opname(C, NULL, NULL, str, ap);
	va_end(ap);
}

void uiPupMenuError(bContext *C, char *str, ...)
{
	va_list ap;
	char nfmt[256];
	char titlestr[256];

	sprintf(titlestr, "Error %%i%d", ICON_ERROR);

	sprintf(nfmt, "%s", str);

	va_start(ap, str);
	vconfirm_opname(C, NULL, titlestr, nfmt, ap);
	va_end(ap);
}

void uiPupMenuReports(bContext *C, ReportList *reports)
{
	Report *report;
	DynStr *ds;
	char *str;

	if(!reports || !reports->list.first)
		return;
	if(!CTX_wm_window(C))
		return;

	ds= BLI_dynstr_new();

	for(report=reports->list.first; report; report=report->next) {
		if(report->type >= RPT_ERROR)
			BLI_dynstr_appendf(ds, "Error %%i%d%%t|%s", ICON_ERROR, report->message);
		else if(report->type >= RPT_WARNING)
			BLI_dynstr_appendf(ds, "Warning %%i%d%%t|%s", ICON_ERROR, report->message);
		else if(report->type >= RPT_INFO)
			BLI_dynstr_appendf(ds, "Info %%t|%s", report->message);
	}

	str= BLI_dynstr_get_cstring(ds);
	ui_popup_menu_create(C, NULL, NULL, NULL, NULL, str);
	MEM_freeN(str);

	BLI_dynstr_free(ds);
}

void uiPupMenuInvoke(bContext *C, const char *idname)
{
	uiPopupMenu *pup;
	uiLayout *layout;
	Menu menu;
	MenuType *mt= WM_menutype_find(idname, TRUE);

	if(mt==NULL) {
		printf("uiPupMenuInvoke: named menu \"%s\" not found\n", idname);
		return;
	}

	if(mt->poll && mt->poll(C, mt)==0)
		return;

	pup= uiPupMenuBegin(C, mt->label, 0);
	layout= uiPupMenuLayout(pup);

	menu.layout= layout;
	menu.type= mt;

	mt->draw(C, &menu);

	uiPupMenuEnd(C, pup);
}


/*************************** Popup Block API **************************/

void uiPupBlockO(bContext *C, uiBlockCreateFunc func, void *arg, char *opname, int opcontext)
{
	wmWindow *window= CTX_wm_window(C);
	uiPopupBlockHandle *handle;
	
	handle= ui_popup_block_create(C, NULL, NULL, func, NULL, arg);
	handle->popup= 1;
	handle->optype= (opname)? WM_operatortype_find(opname, 0): NULL;
	handle->opcontext= opcontext;
	
	UI_add_popup_handlers(C, &window->modalhandlers, handle);
	WM_event_add_mousemove(C);
}

void uiPupBlock(bContext *C, uiBlockCreateFunc func, void *arg)
{
	uiPupBlockO(C, func, arg, NULL, 0);
}

void uiPupBlockOperator(bContext *C, uiBlockCreateFunc func, wmOperator *op, int opcontext)
{
	wmWindow *window= CTX_wm_window(C);
	uiPopupBlockHandle *handle;
	
	handle= ui_popup_block_create(C, NULL, NULL, func, NULL, op);
	handle->popup= 1;
	handle->retvalue= 1;

	handle->popup_arg= op;
	handle->popup_func= operator_cb;
	handle->cancel_func= confirm_cancel_operator;
	handle->opcontext= opcontext;
	
	UI_add_popup_handlers(C, &window->modalhandlers, handle);
	WM_event_add_mousemove(C);
}