187 lines
4.5 KiB
C++
187 lines
4.5 KiB
C++
/****************************************************************************
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GLUI User Interface Toolkit
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---------------------------
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glui_button.cpp - GLUI_Button control class
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--------------------------------------------------
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Copyright (c) 1998 Paul Rademacher
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WWW: http://sourceforge.net/projects/glui/
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Forums: http://sourceforge.net/forum/?group_id=92496
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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#include "glui_internal_control.h"
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/****************************** GLUI_Button::GLUI_Button() **********/
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GLUI_Button::GLUI_Button( GLUI_Node *parent, const char *name,
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int id, GLUI_CB cb )
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{
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common_init();
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user_id = id;
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callback = cb;
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set_name( name );
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currently_inside = false;
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parent->add_control( this );
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}
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/****************************** GLUI_Button::mouse_down_handler() **********/
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int GLUI_Button::mouse_down_handler( int local_x, int local_y )
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{
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int_val = 1; /** A button always in unpressed before here, so
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now we invariably set it to 'depressed' **/
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currently_inside = true;
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redraw();
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return false;
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}
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/****************************** GLUI_Button::mouse_up_handler() **********/
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int GLUI_Button::mouse_up_handler( int local_x, int local_y, bool inside )
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{
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set_int_val( 0 ); /** A button always turns off after you press it **/
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currently_inside = false;
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redraw();
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if ( inside ) {
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/*** Invoke the user's callback ***/
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execute_callback();
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}
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return false;
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}
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/****************************** GLUI_Button::mouse_held_down_handler() ******/
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int GLUI_Button::mouse_held_down_handler( int local_x, int local_y,
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bool new_inside)
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{
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if (new_inside != currently_inside) {
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currently_inside = new_inside;
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redraw();
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}
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return false;
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}
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/****************************** GLUI_Button::key_handler() **********/
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int GLUI_Button::key_handler( unsigned char key,int modifiers )
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{
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return false;
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}
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/********************************************** GLUI_Button::draw() **********/
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void GLUI_Button::draw( int x, int y )
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{
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if (currently_inside) draw_pressed();
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else {
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glui->draw_raised_box( 0, 0, w, h );
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draw_text( 0 );
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}
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}
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/************************************** GLUI_Button::draw_pressed() ******/
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void GLUI_Button::draw_pressed( void )
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{
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glColor3f( 0.0, 0.0, 0.0 );
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draw_text( 1 );
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glBegin( GL_LINE_LOOP );
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glVertex2i( 0, 0 ); glVertex2i( w, 0 );
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glVertex2i( w, h ); glVertex2i( 0, h );
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glEnd();
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glBegin( GL_LINE_LOOP );
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glVertex2i( 1, 1 ); glVertex2i( w-1, 1 );
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glVertex2i( w-1, h-1 ); glVertex2i( 1, h-1 );
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glEnd();
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}
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/**************************************** GLUI_Button::draw_text() **********/
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void GLUI_Button::draw_text( int sunken )
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{
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int string_width;
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glColor3ub( glui->bkgd_color.r, glui->bkgd_color.g, glui->bkgd_color.b );
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glDisable( GL_CULL_FACE );
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glBegin( GL_QUADS );
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glVertex2i( 2, 2 ); glVertex2i( w-2, 2 );
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glVertex2i( w-2, h-2 ); glVertex2i( 2, h-2 );
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glEnd();
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glColor3ub( 0,0,0 );
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string_width = _glutBitmapWidthString( glui->font,
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this->name.c_str() );
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if ( NOT sunken ) {
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draw_name( MAX((w-string_width),0)/2, 13);
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}
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else {
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draw_name( MAX((w-string_width),0)/2 + 1, 13 + 1);
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}
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if ( active ) {
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glEnable( GL_LINE_STIPPLE );
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glLineStipple( 1, 0x5555 );
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glColor3f( 0., 0., 0. );
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glBegin( GL_LINE_LOOP );
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glVertex2i( 3, 3 ); glVertex2i( w-3, 3 );
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glVertex2i( w-3, h-3 ); glVertex2i( 3, h-3 );
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glEnd();
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glDisable( GL_LINE_STIPPLE );
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}
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}
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/************************************** GLUI_Button::update_size() **********/
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void GLUI_Button::update_size( void )
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{
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int text_size;
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if ( NOT glui )
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return;
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text_size = string_width( name );
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if ( w < text_size + 16 )
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w = text_size + 16 ;
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}
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