glui_radio.cpp
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上传日期:2022-01-07
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文件大小:9k
- /****************************************************************************
-
- GLUI User Interface Toolkit
- ---------------------------
- glui_radio.cpp - GLUI_RadioGroup and GLUI_RadioButton control classes
- --------------------------------------------------
- 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"
- #include <cassert>
- /****************************** GLUI_RadioGroup::GLUI_RadioGroup() **********/
- GLUI_RadioGroup::GLUI_RadioGroup(GLUI_Node *parent,
- int *value_ptr,
- int id, GLUI_CB cb)
- {
- common_init();
- GLUI_String buf;
- set_ptr_val( value_ptr );
- if ( value_ptr ) {
- int_val = *value_ptr; /** Can't call set_int_val(), b/c that
- function will try to call the
- callback, etc */
- /** Actually, maybe not **/
- last_live_int = *value_ptr;
- }
- user_id = id;
- glui_format_str( buf, "RadioGroup: %p", this );
- set_name( buf.c_str() );
- callback = cb;
- parent->add_control( this );
- init_live();
- }
- /****************************** GLUI_RadioGroup::draw() **********/
- void GLUI_RadioGroup::draw( int x, int y )
- {
- if ( NOT can_draw() )
- return;
- draw_group(false);
- }
- /********************* GLUI_RadioGroup::draw_group(int translate) **********/
- void GLUI_RadioGroup::draw_group( int translate )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
- GLUI_RadioButton *button;
- this->int_val = int_val;
- glMatrixMode(GL_MODELVIEW );
- button = (GLUI_RadioButton*) first_child();
- while( button != NULL ) {
- glPushMatrix();
- if (translate) {
- button->translate_to_origin();
- }
- else {
- glTranslatef(button->x_abs-x_abs,
- button->y_abs-y_abs,0.0);
- }
- if ( button->int_val )
- button->draw_checked();
- else
- button->draw_unchecked();
-
- glPopMatrix();
- button = (GLUI_RadioButton*) button->next();
- }
- }
- /****************************** GLUI_RadioGroup::set_name() **********/
- void GLUI_RadioGroup::set_name( const char *text )
- {
- name = text;
- if ( glui )
- glui->refresh();
- }
- /********************************* GLUI_RadioGroup::set_selected() **********/
- void GLUI_RadioGroup::set_selected( int int_val )
- {
- GLUI_RadioButton *button;
- this->int_val = int_val;
- button = (GLUI_RadioButton*) first_child();
- while( button != NULL ) {
- if ( int_val == -1 ) { /*** All buttons in group are deselected ***/
- button->set_int_val(0);
- }
- else if ( int_val == button->user_id ) { /*** This is selected button ***/
- button->set_int_val(1);
- }
- else { /*** This is NOT selected button ***/
- button->set_int_val(0);
- }
- button = (GLUI_RadioButton*) button->next();
- }
- redraw();
- }
- /************************ GLUI_RadioButton::GLUI_RadioButton() **********/
- GLUI_RadioButton::GLUI_RadioButton( GLUI_RadioGroup *grp, const char *name )
- {
- common_init();
- set_int_val( 0 );
- /** A radio button's user id is always its ordinal number (zero-indexed)
- within the group */
- user_id = grp->num_buttons;
- set_name( name );
- group = grp;
-
- group->num_buttons++; /* Increments radiogroup's button count */
- group->add_control( this );
- /*** Now update button states ***/
- group->set_int_val( group->int_val ); /* This tells the group to
- reset itself to its
- current value, thereby
- updating all its buttons */
- }
- /************************ GLUI_RadioButton::mouse_down_handler() **********/
- int GLUI_RadioButton::mouse_down_handler( int local_x, int local_y )
- {
- if ( NOT group )
- return false;
- orig_value = group->int_val;
-
- currently_inside = true;
- group->set_selected( this->user_id );
- redraw();
-
- return false;
- }
- /********************** GLUI_RadioButton::mouse_held_down_handler() ******/
- int GLUI_RadioButton::mouse_held_down_handler( int local_x, int local_y,
- bool inside)
- {
- if (inside != currently_inside) {
- if (inside) group->set_selected( this->user_id );
- else group->set_selected( orig_value );
- currently_inside = inside;
- redraw();
- }
-
- return false;
- }
- /*************************** GLUI_RadioButton::mouse_up_handler() **********/
- int GLUI_RadioButton::mouse_up_handler( int local_x, int local_y,
- bool inside )
- {
- if ( NOT group )
- return false;
- if ( NOT inside ) {
- group->set_selected( orig_value );
- redraw();
- }
- else {
- /** Now we update the radio button group. We tell the group
- handler to set the currently-selected item to this button, which
- is reference by its user_id/ordinal number within group **/
-
- group->set_selected( this->user_id );
- redraw();
- /*** Now update the linked variable, and call the callback,
- but ONLY if the value of the radio group actually changed ***/
- if ( group->int_val != orig_value ) {
- group->output_live(true); /** Output live and update gfx ***/
-
- group->execute_callback();
- }
- }
- return false;
- }
- /****************************** GLUI_RadioButton::draw() **********/
- void GLUI_RadioButton::draw( int x, int y )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
- if ( NOT group OR NOT can_draw() )
- return;
- /*** See if we're the currently-selected button. If so, draw ***/
- if ( group->int_val == this->user_id ) {
- if ( enabled )
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON, 0, 0 );
- else
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON_DIS, 0, 0 );
- }
- else {
- if ( enabled )
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF, 0, 0 );
- else
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF_DIS, 0, 0 );
- }
- draw_active_area();
- draw_name( text_x_offset, 10 );
- }
- /************************************ GLUI_RadioButton::draw_checked() ******/
- void GLUI_RadioButton::draw_checked( void )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
- if ( enabled )
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON, 0, 0 );
- else
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_ON_DIS, 0, 0 );
- draw_active_area();
- }
- /*********************************** GLUI_RadioButton::draw_unchecked() ******/
- void GLUI_RadioButton::draw_unchecked( void )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
-
- if ( enabled )
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF, 0, 0 );
- else
- glui->std_bitmaps.draw( GLUI_STDBITMAP_RADIOBUTTON_OFF_DIS, 0, 0 );
- draw_active_area();
- }
- /**************************************** GLUI_RadioButton::draw_O() ********/
- void GLUI_RadioButton::draw_O( void )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
- int i, j;
- glBegin( GL_POINTS );
- for(i=3; i<=GLUI_RADIOBUTTON_SIZE-3; i++ )
- for(j=3; j<=GLUI_RADIOBUTTON_SIZE-3; j++ )
- glVertex2i(i,j);
- glEnd();
- }
- /******************************** GLUI_RadioButton::update_size() **********/
- void GLUI_RadioButton::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_RadioButton::draw_active_area() **************/
- void GLUI_RadioButton::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_RadioGroup::set_int_val() **********/
- void GLUI_RadioGroup::set_int_val( int new_val )
- {
- if ( new_val == int_val )
- return;
- set_selected( new_val );
- redraw();
- output_live(true);
-
- }