208 lines
4.4 KiB
Text
208 lines
4.4 KiB
Text
/****************************************************************************
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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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This program is freely distributable without licensing fees and is
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provided without guarantee or warrantee expressed or implied. This
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program is -not- in the public domain.
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*****************************************************************************/
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#include "glui.h"
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#include "stdinc.h"
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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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draw_pressed();
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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, int 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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draw_unpressed();
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if ( NOT inside ) {
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}
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else {
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/*** Invoke the callback ***/
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execute_callback();
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/** Tell the main gfx window to update itself **/
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if( glui )
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glui->post_update_main_gfx();
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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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int new_inside)
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{
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if ( NOT new_inside AND currently_inside == true ) {
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draw_unpressed();
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}
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else if ( new_inside AND currently_inside == false ) {
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draw_pressed();
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}
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currently_inside = new_inside;
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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_pressed() ******/
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void GLUI_Button::draw_pressed( void )
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{
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int state, orig;
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if ( NOT can_draw() )
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return;
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orig = set_to_glut_window();
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state = glui->set_front_draw_buffer();
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glColor3f( 0.0, 0.0, 0.0 );
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glPushMatrix();
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translate_to_origin();
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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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glPopMatrix();
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glui->restore_draw_buffer(state);
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restore_window(orig);
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}
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/************************************** GLUI_Button::draw_unpressed() ******/
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void GLUI_Button::draw_unpressed( void )
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{
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if ( NOT can_draw() )
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return;
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translate_and_draw_front();
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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 ( NOT can_draw() )
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return;
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if ( glui )
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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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/**************************************** 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, orig;
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if ( NOT can_draw() )
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return;
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orig = set_to_glut_window();
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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 );
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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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restore_window(orig);
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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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