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/****************************************************************************
GLUI User Interface Toolkit
---------------------------
glui_listbox - GLUI_ListBox control class
--------------------------------------------------
Copyright (c) 1998 Paul Rademacher
WWW: http://sourceforge.net/projects/glui/
Forums: http://sourceforge.net/forum/?group_id=92496
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*****************************************************************************/
#include "glui_internal_control.h"
/****************************** GLUI_Listbox::GLUI_Listbox() **********/
GLUI_Listbox::GLUI_Listbox( GLUI_Node *parent,
const char *name, int *value_ptr,
int id,
GLUI_CB cb)
{
common_init();
set_ptr_val( value_ptr );
user_id = id;
set_name( name );
callback = cb;
parent->add_control( this );
init_live();
}
/****************************** GLUI_Listbox::mouse_down_handler() **********/
int GLUI_Listbox::mouse_down_handler( int local_x, int local_y )
{
return false;
}
/****************************** GLUI_Listbox::mouse_up_handler() **********/
int GLUI_Listbox::mouse_up_handler( int local_x, int local_y, bool inside )
{
return false;
}
/****************************** GLUI_Listbox::mouse_held_down_handler() ******/
int GLUI_Listbox::mouse_held_down_handler( int local_x, int local_y,
bool inside)
{
return false;
}
/****************************** GLUI_Listbox::key_handler() **********/
int GLUI_Listbox::key_handler( unsigned char key,int modifiers )
{
return false;
}
/****************************** GLUI_Listbox::draw() **********/
void GLUI_Listbox::draw( int x, int y )
{
GLUI_DRAWINGSENTINAL_IDIOM
int name_x;
/* draw_active_area(); */
name_x = MAX(text_x_offset - string_width(this->name) - 3,0);
draw_name( name_x , 13);
draw_box_inwards_outline( text_x_offset, w,
0, h );
if ( NOT active ) {
draw_box( text_x_offset+3, w-2, 2, h-2, 1.0, 1.0, 1.0 );
if ( NOT enabled )
glColor3b( 32, 32, 32 );
else
glColor3f( 0.0, 0.0, 0.0 );
glRasterPos2i( text_x_offset+5, 13 );
draw_string( curr_text );
}
else {
draw_box( text_x_offset+3, w-2, 2, h-2, .0, .0, .6 );
glColor3f( 1.0, 1.0, 1.0 );
glRasterPos2i( text_x_offset+5, 13 );
draw_string( curr_text );
}
if ( enabled ) {
glui->std_bitmaps.
draw(GLUI_STDBITMAP_LISTBOX_UP,
w-glui->std_bitmaps.width(GLUI_STDBITMAP_LISTBOX_UP)-1,
2 );
}
else {
glui->std_bitmaps.
draw(GLUI_STDBITMAP_LISTBOX_UP_DIS,
w-glui->std_bitmaps.width(GLUI_STDBITMAP_LISTBOX_UP)-1,
2 );
}
}
/************************************ GLUI_Listbox::update_si() **********/
void GLUI_Listbox::update_size( void )
{
recalculate_item_width();
}
/********************************* GLUI_Listbox::set_int_val() **************/
void GLUI_Listbox::set_int_val( int new_val )
{
/* int_val = new_val; */
do_selection( new_val );
/*** Update the variable we're (possibly) pointing to, and update the main gfx ***/
output_live(true);
}
/**************************************** GLUI_Listbox::add_item() **********/
int GLUI_Listbox::add_item( int id, const char *new_text )
{
GLUI_Listbox_Item *new_node = new GLUI_Listbox_Item;
GLUI_Listbox_Item *head;
new_node->text = new_text;
new_node->id = id;
head = (GLUI_Listbox_Item*) items_list.first_child();
new_node->link_this_to_parent_last( &items_list );
if ( head == NULL ) {
/*** This is first item added ***/
int_val = id+1; /** Different than id **/
do_selection( id );
last_live_int = id;
if( glui )
glui->post_update_main_gfx();
}
if (recalculate_item_width()) glui->refresh();
return true;
}
/************************************** GLUI_Listbox::delete_item() **********/
int GLUI_Listbox::delete_item( const char *text )
{
GLUI_Listbox_Item *node = get_item_ptr(text);
if (node)
{
node->unlink();
delete node;
return true;
}
if (recalculate_item_width()) glui->refresh();
return false;
}
/************************************** GLUI_Listbox::delete_item() **********/
int GLUI_Listbox::delete_item(int id)
{
GLUI_Listbox_Item *node = get_item_ptr(id);
if (node)
{
node->unlink();
delete node;
return true;
}
if (recalculate_item_width()) glui->refresh();
return false;
}
/************************************** GLUI_Listbox::sort_items() **********/
int GLUI_Listbox::sort_items( void )
{
return false;
}
/********************************************* GLUI_Listbox::dump() **********/
void GLUI_Listbox::dump( FILE *output )
{
GLUI_Listbox_Item *item;
/* printf( "%p\n", (char*) name ); */
fprintf( output, "Listbox: %s\n", name.c_str() );
item = (GLUI_Listbox_Item *) items_list.first_child();
while( item ) {
fprintf( output, " %3d : %s\n", item->id, item->text.c_str() );
item = (GLUI_Listbox_Item *) item->next();
}
}
/************************************ GLUI_Listbox::get_item_ptr() **********/
GLUI_Listbox_Item *GLUI_Listbox::get_item_ptr( const char *text )
{
GLUI_Listbox_Item *item;
item = (GLUI_Listbox_Item *) items_list.first_child();
while( item ) {
if ( item->text == text )
return item;
item = (GLUI_Listbox_Item *) item->next();
}
return NULL;
}
/************************************ GLUI_Listbox::get_item_ptr() **********/
GLUI_Listbox_Item *GLUI_Listbox::get_item_ptr( int id )
{
GLUI_Listbox_Item *item;
item = (GLUI_Listbox_Item *) items_list.first_child();
while( item ) {
if ( item->id == id )
return item;
item = (GLUI_Listbox_Item *) item->next();
}
return NULL;
}
/************************************ GLUI_Listbox::mouse_over() **********/
static void listbox_callback( int i )
{
int old_val;
if ( NOT GLUI_Master.curr_left_button_glut_menu OR
!dynamic_cast<GLUI_Listbox*>(GLUI_Master.curr_left_button_glut_menu) )
return;
old_val = ((GLUI_Listbox*)GLUI_Master.curr_left_button_glut_menu)->int_val;
((GLUI_Listbox*)GLUI_Master.curr_left_button_glut_menu)->set_int_val(i);
/**** If value changed, execute callback ****/
if ( old_val !=
((GLUI_Listbox*)GLUI_Master.curr_left_button_glut_menu)->int_val ) {
((GLUI_Listbox*)GLUI_Master.curr_left_button_glut_menu)->execute_callback();
}
}
/*************************************** GLUI_Listbox::mouse_over() **********/
int GLUI_Listbox::mouse_over( int state, int x, int y )
{
GLUI_Listbox_Item *item;
/* printf( "x/y: %d/%d\n", x, y ); */
if ( state AND enabled AND x > x_abs + text_x_offset) {
/**** Build a GLUT menu for this listbox ***/
/* printf( "%d %d\n", x, y ); */
glut_menu_id = glutCreateMenu(listbox_callback);
item = (GLUI_Listbox_Item *) items_list.first_child();
while( item ) {
glutAddMenuEntry( item->text.c_str(), item->id );
item = (GLUI_Listbox_Item *) item->next();
}
glutAttachMenu( GLUT_LEFT_BUTTON);
GLUI_Master.set_left_button_glut_menu_control( this );
}
else if ( glut_menu_id != -1 ) {
/* printf( "OUT\n" ); */
glutDetachMenu( GLUT_LEFT_BUTTON );
glutDestroyMenu( glut_menu_id );
glut_menu_id = -1;
}
return true;
}
/************************************ GLUI_Listbox::do_selection() **********/
int GLUI_Listbox::do_selection( int item_num )
{
GLUI_Listbox_Item *item, *sel_item;
/*** Is this item already selected? ***/
if ( item_num == int_val )
return false;
sel_item = NULL;
item = (GLUI_Listbox_Item *) items_list.first_child();
while( item ) {
if ( item->id == item_num ) {
sel_item = item;
break;
}
item = (GLUI_Listbox_Item *) item->next();
}
if ( NOT sel_item )
return false;
/* printf( "-> %s\n", (char*) sel_item->text ); */
int_val = item_num;
curr_text = sel_item->text;
redraw();
return true;
}
/*********************************** GLUI_Listbox::~GLUI_Listbox() **********/
GLUI_Listbox::~GLUI_Listbox()
{
GLUI_Listbox_Item *item = (GLUI_Listbox_Item *) items_list.first_child();
while (item)
{
GLUI_Listbox_Item *tmp = item;
item = (GLUI_Listbox_Item *) item->next();
delete tmp;
}
}
/****************************** GLUI_Listbox::special_handler() **********/
int GLUI_Listbox::special_handler( int key,int modifiers )
{
GLUI_Listbox_Item *node, *new_node;
node = get_item_ptr( int_val );
new_node = NULL;
if ( key == GLUT_KEY_DOWN ) {
new_node = (GLUI_Listbox_Item*) node->next();
}
else if ( key == GLUT_KEY_UP ) {
new_node = (GLUI_Listbox_Item*) node->prev();
}
else if ( key == GLUT_KEY_HOME ) {
new_node = (GLUI_Listbox_Item*) items_list.first_child();
}
else if ( key == GLUT_KEY_END ) {
new_node = (GLUI_Listbox_Item*) items_list.last_child();
}
if ( new_node != NULL AND new_node != node ) {
node = new_node;
set_int_val( node->id );
execute_callback();
return true;
}
else {
return false;
}
}
/************************* GLUI_Listbox::recalculate_item_width( void ) ***********/
/** Change w and return true if we need to be widened to fit the current items. */
bool GLUI_Listbox::recalculate_item_width( void )
{
int item_text_size;
if ( NOT glui )
return false;
/* Find the title size */
text_x_offset = string_width( name );
/* Find the longest item string ***/
item_text_size = 0;
GLUI_Listbox_Item *item = (GLUI_Listbox_Item *) items_list.first_child();
while( item ) {
item_text_size = MAX(item_text_size,string_width(item->text));
item = (GLUI_Listbox_Item *) item->next();
}
/* Sum up our layout: name, item, and drop-down marker */
int new_wid=text_x_offset+MAX(GLUI_EDITTEXT_MIN_TEXT_WIDTH,item_text_size)+20;
if ( w != new_wid) {
w = new_wid;
return true; /* we gotta be shortened or widened */
}
else {
return false; /* our current width is OK */
}
}
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