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/****************************************************************************
GLUI User Interface Toolkit
---------------------------
glui_button.cpp - GLUI_Button 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_Button::GLUI_Button() **********/
GLUI_Button::GLUI_Button( GLUI_Node *parent, const char *name,
int id, GLUI_CB cb )
{
common_init();
user_id = id;
callback = cb;
set_name( name );
currently_inside = false;
parent->add_control( this );
}
/****************************** GLUI_Button::mouse_down_handler() **********/
int GLUI_Button::mouse_down_handler( int local_x, int local_y )
{
int_val = 1; /** A button always in unpressed before here, so
now we invariably set it to 'depressed' **/
currently_inside = true;
redraw();
return false;
}
/****************************** GLUI_Button::mouse_up_handler() **********/
int GLUI_Button::mouse_up_handler( int local_x, int local_y, bool inside )
{
set_int_val( 0 ); /** A button always turns off after you press it **/
currently_inside = false;
redraw();
if ( inside ) {
/*** Invoke the user's callback ***/
execute_callback();
}
return false;
}
/****************************** GLUI_Button::mouse_held_down_handler() ******/
int GLUI_Button::mouse_held_down_handler( int local_x, int local_y,
bool new_inside)
{
if (new_inside != currently_inside) {
currently_inside = new_inside;
redraw();
}
return false;
}
/****************************** GLUI_Button::key_handler() **********/
int GLUI_Button::key_handler( unsigned char key,int modifiers )
{
return false;
}
/********************************************** GLUI_Button::draw() **********/
void GLUI_Button::draw( int x, int y )
{
if (currently_inside) draw_pressed();
else {
glui->draw_raised_box( 0, 0, w, h );
draw_text( 0 );
}
}
/************************************** GLUI_Button::draw_pressed() ******/
void GLUI_Button::draw_pressed( void )
{
glColor3f( 0.0, 0.0, 0.0 );
draw_text( 1 );
glBegin( GL_LINE_LOOP );
glVertex2i( 0, 0 ); glVertex2i( w, 0 );
glVertex2i( w, h ); glVertex2i( 0, h );
glEnd();
glBegin( GL_LINE_LOOP );
glVertex2i( 1, 1 ); glVertex2i( w-1, 1 );
glVertex2i( w-1, h-1 ); glVertex2i( 1, h-1 );
glEnd();
}
/**************************************** GLUI_Button::draw_text() **********/
void GLUI_Button::draw_text( int sunken )
{
int string_width;
glColor3ub( glui->bkgd_color.r, glui->bkgd_color.g, glui->bkgd_color.b );
glDisable( GL_CULL_FACE );
glBegin( GL_QUADS );
glVertex2i( 2, 2 ); glVertex2i( w-2, 2 );
glVertex2i( w-2, h-2 ); glVertex2i( 2, h-2 );
glEnd();
glColor3ub( 0,0,0 );
string_width = _glutBitmapWidthString( glui->font,
this->name.c_str() );
if ( NOT sunken ) {
draw_name( MAX((w-string_width),0)/2, 13);
}
else {
draw_name( MAX((w-string_width),0)/2 + 1, 13 + 1);
}
if ( active ) {
glEnable( GL_LINE_STIPPLE );
glLineStipple( 1, 0x5555 );
glColor3f( 0., 0., 0. );
glBegin( GL_LINE_LOOP );
glVertex2i( 3, 3 ); glVertex2i( w-3, 3 );
glVertex2i( w-3, h-3 ); glVertex2i( 3, h-3 );
glEnd();
glDisable( GL_LINE_STIPPLE );
}
}
/************************************** GLUI_Button::update_size() **********/
void GLUI_Button::update_size( void )
{
int text_size;
if ( NOT glui )
return;
text_size = string_width( name );
if ( w < text_size + 16 )
w = text_size + 16 ;
}