glui_checkbox.cpp
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上传日期:2022-01-07
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- /****************************************************************************
-
- GLUI User Interface Toolkit (LGPL)
- ---------------------------
- glui_checkbox - GLUI_Checkbox 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_Checkbox::GLUI_Checkbox() **********/
- GLUI_Checkbox::GLUI_Checkbox( GLUI_Node *parent,
- const char *name, int *value_ptr,
- int id,
- GLUI_CB cb )
- {
- common_init();
- set_ptr_val( value_ptr );
- set_name( name );
- user_id = id;
- callback = cb;
- parent->add_control( this );
- init_live();
- }
- /****************************** GLUI_Checkbox::mouse_down_handler() **********/
- int GLUI_Checkbox::mouse_down_handler( int local_x, int local_y )
- {
- orig_value = int_val;
- int_val = !int_val;
- currently_inside = true;
- redraw();
- return false;
- }
- /****************************** GLUI_Checkbox::mouse_up_handler() **********/
- int GLUI_Checkbox::mouse_up_handler( int local_x, int local_y, bool inside )
- {
- if ( NOT inside ) { /* undo effect on value */
- int_val = orig_value;
- }
- else {
- set_int_val( int_val );
- /*** Invoke the callback ***/
- execute_callback();
- }
- return false;
- }
- /****************************** GLUI_Checkbox::mouse_held_down_handler() ******/
- int GLUI_Checkbox::mouse_held_down_handler( int local_x, int local_y,
- bool inside)
- {
- /********** Toggle checked and unchecked bitmap if we're entering or
- leaving the checkbox area **********/
- if ( inside != currently_inside ) {
- int_val = !int_val;
- currently_inside = inside;
- redraw();
- }
-
- return false;
- }
- /****************************** GLUI_Checkbox::key_handler() **********/
- int GLUI_Checkbox::key_handler( unsigned char key,int modifiers )
- {
- return false;
- }
- /****************************** GLUI_Checkbox::draw() **********/
- void GLUI_Checkbox::draw( int x, int y )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
- if ( int_val != 0 ) {
- if ( enabled )
- glui->std_bitmaps.draw( GLUI_STDBITMAP_CHECKBOX_ON, 0, 0 );
- else
- glui->std_bitmaps.draw( GLUI_STDBITMAP_CHECKBOX_ON_DIS, 0, 0 );
- }
- else {
- if ( enabled )
- glui->std_bitmaps.draw( GLUI_STDBITMAP_CHECKBOX_OFF, 0, 0 );
- else
- glui->std_bitmaps.draw( GLUI_STDBITMAP_CHECKBOX_OFF_DIS, 0, 0 );
- }
- draw_active_area();
- draw_name( text_x_offset, 10);
- }
- /**************************** GLUI_Checkbox::draw_active_area() **************/
- void GLUI_Checkbox::draw_active_area( void )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
- int text_width, left, right;
- text_width = _glutBitmapWidthString( glui->font, name.c_str() );
- left = text_x_offset-3;
- right = left + 7 + text_width;
- if ( active ) {
- glEnable( GL_LINE_STIPPLE );
- glLineStipple( 1, 0x5555 );
- glColor3f( 0., 0., 0. );
- } else {
- glColor3ub( glui->bkgd_color.r, glui->bkgd_color.g, glui->bkgd_color.b );
- }
- glBegin( GL_LINE_LOOP );
- glVertex2i(left,0); glVertex2i( right,0);
- glVertex2i(right,h+1); glVertex2i( left,h+1);
- glEnd();
-
- glDisable( GL_LINE_STIPPLE );
- }
- /************************************ GLUI_Checkbox::update_size() **********/
- void GLUI_Checkbox::update_size( void )
- {
- int text_size;
- if ( NOT glui )
- return;
- text_size = _glutBitmapWidthString( glui->font, name.c_str() );
- /* if ( w < text_x_offset + text_size + 6 ) */
- w = text_x_offset + text_size + 6 ;
- }
- /********************************* GLUI_Checkbox::set_int_val() **************/
- void GLUI_Checkbox::set_int_val( int new_val )
- {
- int_val = new_val;
- /*** Update the variable we're (possibly) pointing to ***/
- output_live(true);
- redraw();
- }