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/****************************************************************************
GLUI User Interface Toolkit
---------------------------
glui_button.cpp - GLUI_Button control class
--------------------------------------------------
Copyright (c) 1998 Paul Rademacher
This program is freely distributable without licensing fees and is
provided without guarantee or warrantee expressed or implied. This
program is -not- in the public domain.
*****************************************************************************/
#include "glui.h"
#include "stdinc.h"
/****************************** 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' **/
(void)local_x;
(void)local_y;
currently_inside = true;
draw_pressed();
return false;
}
/****************************** GLUI_Button::mouse_up_handler() **********/
int GLUI_Button::mouse_up_handler( int local_x, int local_y, int inside )
{
(void)local_x;
(void)local_y;
set_int_val( 0 ); /** A button always turns off after you press it **/
draw_unpressed();
if ( NOT inside ) {
}
else {
/*** Invoke the callback ***/
execute_callback();
/** Tell the main gfx window to update itself **/
if( glui )
glui->post_update_main_gfx();
}
return false;
}
/****************************** GLUI_Button::mouse_held_down_handler() ******/
int GLUI_Button::mouse_held_down_handler( int local_x, int local_y,
int new_inside)
{
(void)local_x;
(void)local_y;
if ( NOT new_inside AND currently_inside == true ) {
draw_unpressed();
}
else if ( new_inside AND currently_inside == false ) {
draw_pressed();
}
currently_inside = new_inside;
return false;
}
/****************************** GLUI_Button::key_handler() **********/
int GLUI_Button::key_handler( unsigned char key,int modifiers )
{
(void)key;
(void)modifiers;
return false;
}
/************************************** GLUI_Button::draw_pressed() ******/
void GLUI_Button::draw_pressed( void )
{
int state, orig;
if ( NOT can_draw() )
return;
orig = set_to_glut_window();
state = glui->set_front_draw_buffer();
glColor3f( 0.0, 0.0, 0.0 );
glPushMatrix();
translate_to_origin();
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();
glPopMatrix();
glui->restore_draw_buffer(state);
restore_window(orig);
}
/************************************** GLUI_Button::draw_unpressed() ******/
void GLUI_Button::draw_unpressed( void )
{
if ( NOT can_draw() )
return;
translate_and_draw_front();
}
/********************************************** GLUI_Button::draw() **********/
void GLUI_Button::draw( int x, int y )
{
(void)x;
(void)y;
if ( NOT can_draw() )
return;
if ( glui )
glui->draw_raised_box( 0, 0, w, h );
draw_text( 0 );
}
/**************************************** GLUI_Button::draw_text() **********/
void GLUI_Button::draw_text( int sunken )
{
int string_width, orig;
if ( NOT can_draw() )
return;
orig = set_to_glut_window();
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 );
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 );
}
restore_window(orig);
}
/************************************** 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 ;
}
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