glui_mouse_iaction.cpp
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上传日期:2022-01-07
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- /****************************************************************************
-
- GLUI User Interface Toolkit
- ---------------------------
- glui_mouse_iaction - GLUI Mouse Interaction 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_Mouse_Interaction::mouse_down_handler() ******/
- int GLUI_Mouse_Interaction::mouse_down_handler( int local_x, int local_y )
- {
- /* int win_h = glutGet( GLUT_WINDOW_HEIGHT ); */
- /* iaction_mouse_down_handler( local_x, local_y ); */
- iaction_mouse_down_handler( local_x-x_abs, local_y-y_abs );
- /*local_x-x_abs, ((glui->h-local_y)-y_abs) ); */
- redraw();
-
- return false;
- }
- /**************************** GLUI_Mouse_Interaction::mouse_up_handler() */
- int GLUI_Mouse_Interaction::mouse_up_handler( int local_x, int local_y, bool inside )
- {
- iaction_mouse_up_handler( local_x-x_abs, local_y-y_abs, inside );
- return false;
- }
- /****************************** GLUI_Mouse_Interaction::mouse_held_down_handler() ******/
- int GLUI_Mouse_Interaction::mouse_held_down_handler( int local_x, int local_y,
- bool inside)
- {
- iaction_mouse_held_down_handler( local_x-x_abs, local_y-y_abs , inside );
- redraw();
- /** Tell the main graphics window to update iteself **/
- if( glui )
- glui->post_update_main_gfx();
- execute_callback();
- return false;
- }
- /****************************** GLUI_Mouse_Interaction::draw() **********/
- void GLUI_Mouse_Interaction::draw( int x, int y )
- {
- GLUI_DRAWINGSENTINAL_IDIOM
- int text_width = string_width( this->name );
- int x_left = this->w/2 - text_width/2;
- if ( NOT draw_active_area_only ) {
- draw_name( x_left, h-4 );
- draw_active_box( x_left-4, x_left+string_width( name )+4,
- h, h-14 );
- }
- draw_active_area();
- }
- /************************************ GLUI_Mouse_Interaction::update_size() **********/
- void GLUI_Mouse_Interaction::update_size( void )
- {
- if ( NOT glui )
- return;
- int text_width = string_width( this->name );
- if ( w < text_width+6 )
- w = text_width+6;
- if ( h - 18 > w )
- w = h - 18;
- iaction_init();
- }
- /****************************** GLUI_Mouse_Interaction::special_handler() **********/
- int GLUI_Mouse_Interaction::special_handler( int key,int modifiers )
- {
- int center_x, center_y;
- int drag_x, drag_y;
- center_x = w/2;
- center_y = (h-18)/2;
- drag_x = 0;
- drag_y = 0;
-
- if ( key == GLUT_KEY_LEFT )
- drag_x = -6;
- else if ( key == GLUT_KEY_RIGHT )
- drag_x = 6;
- else if ( key == GLUT_KEY_UP )
- drag_y = -6;
- else if ( key == GLUT_KEY_DOWN )
- drag_y = 6;
- if ( drag_x != 0 OR drag_y != 0 ) {
- mouse_down_handler( center_x, center_y );
- mouse_held_down_handler( center_x + drag_x, center_y + drag_y,true );
- mouse_up_handler( center_x + drag_x, center_y + drag_y, true );
- }
- return false;
- }
- /****************************** GLUI_Mouse_Interaction::draw_active_area() **********/
- void GLUI_Mouse_Interaction::draw_active_area( void )
- {
- int win_h = glutGet( GLUT_WINDOW_HEIGHT ), win_w = glutGet(GLUT_WINDOW_WIDTH);
- int text_height = 18; /* what a kludge */
- int viewport_size = h-text_height; /*MIN(w,h); */
- glMatrixMode( GL_MODELVIEW );
- glPushMatrix();
- glLoadIdentity();
- glTranslatef( (float) win_w/2.0, (float) win_h/2.0, 0.0 );
- glRotatef( 180.0, 0.0, 1.0, 0.0 );
- glRotatef( 180.0, 0.0, 0.0, 1.0 );
- glTranslatef( (float) -win_w/2.0, (float) -win_h/2.0, 0.0 );
- glTranslatef( (float) this->x_abs + .5, (float) this->y_abs + .5, 0.0 );
- glTranslatef( (float)this->w/2.0, (float)viewport_size/2.0 + 2.0 , 0.0 );
- /*** Draw the interaction control's orthographic elements ***/
- iaction_draw_active_area_ortho();
-
- /*** Setup and draw the interaction control's perspective elements ***/
- /*** Set the viewport to just the square of the drawing area ***/
- /* glViewport( this->x_abs , glui->main_panel->h - this->y_abs - this->h,*/
- /*glViewport( this->x_abs+1+(this->w/2-viewport_size/2),
- this->h-this->y_abs-viewport_size-1,
- viewport_size, viewport_size );*/
-
- viewport_size -= 4;
- int offset = 0;
- if ( ((this->w-viewport_size) % 2) == 1 )
- offset = 1;
- glViewport( this->x_abs + (this->w-viewport_size)/2 + offset,
- win_h - this->y_abs - this->h + text_height,
- viewport_size, viewport_size );
- glMatrixMode( GL_PROJECTION );
- glLoadIdentity();
- double xy=1.00,zc=50.0; /* X-Y size, and Z origin */
- glFrustum( -1.0*xy, 1.0*xy, -xy, xy, zc*0.7, zc*1.3 );
- glMatrixMode( GL_MODELVIEW );
- glPushMatrix();
- glLoadIdentity();
- glTranslatef( 0.0, 0.0, -zc );
- glScalef(xy,xy,1.0); // xy);
-
- /* glutSolidTeapot( 1.0 ); */
- iaction_draw_active_area_persp();
- glMatrixMode( GL_MODELVIEW );
- glPopMatrix();
- glui->set_viewport();
- glui->set_ortho_projection();
- glMatrixMode( GL_MODELVIEW );
- glPopMatrix();
- }