#include <GL/freeglut.h>
#include <stdio.h>
#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
static int sequence_number = 0 ;
+#define CALLBACKMAKER_N_WINDOWS 4
+int windows[CALLBACKMAKER_N_WINDOWS] = {0};
+
+/* define status vars showing whether given callback has been called for given window */
+#define CALLBACK_CALLED_VAR(name) int name##_called[CALLBACKMAKER_N_WINDOWS] = {0};
+#define CALLBACK_0V(name) int name##_seq[CALLBACKMAKER_N_WINDOWS] = {-1}; CALLBACK_CALLED_VAR(name);
+#define CALLBACK_1V(name,field) int name##_##field[CALLBACKMAKER_N_WINDOWS] = {-1}; CALLBACK_0V(name);
+#define CALLBACK_2V(name,field1,field2) int name##_##field2[CALLBACKMAKER_N_WINDOWS] = {-1}; CALLBACK_1V(name,field1);
+#define CALLBACK_3V(name,field1,field2,field3) int name##_##field3[CALLBACKMAKER_N_WINDOWS] = {-1}; CALLBACK_2V(name,field1,field2);
+#define CALLBACK_4V(name,field1,field2,field3,field4) int name##_##field4[CALLBACKMAKER_N_WINDOWS] = {-1}; CALLBACK_3V(name,field1,field2,field3);
+#define CALLBACK_5V(name,field1,field2,field3,field4,field5) int name##_##field5[CALLBACKMAKER_N_WINDOWS] = {-1}; CALLBACK_4V(name,field1,field2,field3,field4);
+CALLBACK_2V(reshape,width,height);
+CALLBACK_2V(position,top,left);
+CALLBACK_1V(visibility,vis);
+CALLBACK_1V(windowStatus,state);
+CALLBACK_4V(key,key,x,y,mod);
+CALLBACK_4V(keyup,key,x,y,mod);
+CALLBACK_4V(special,key,x,y,mod);
+CALLBACK_4V(specialup,key,x,y,mod);
+CALLBACK_4V(joystick,a,b,c,d);
+CALLBACK_5V(mouse,button,updown,x,y,mod);
+CALLBACK_5V(mousewheel,number,direction,x,y,mod);
+CALLBACK_3V(motion,x,y,mod);
+CALLBACK_3V(passivemotion,x,y,mod);
+CALLBACK_1V(entry,state);
+CALLBACK_0V(close);
+/* menudestroy is registered on each menu, not a window */
+int menudestroy_called = 0 ;
+/* menustatus and menustate are global callbacks, set for all menus at the same time */
+int menustatus_called = 0;
+int menustate_called = 0;
+
+#define STRING_LENGTH 10
+
+static void
+bitmapPrintf (const char *fmt, ...)
+{
+ static char buf[256];
+ va_list args;
+
+ va_start(args, fmt);
+#if defined(WIN32) && !defined(__CYGWIN__)
+ (void) _vsnprintf (buf, sizeof(buf), fmt, args);
+#else
+ (void) vsnprintf (buf, sizeof(buf), fmt, args);
+#endif
+ va_end(args);
+ glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)buf ) ;
+}
+
+static int
+getWindowAndIdx(int *winIdx)
+{
+ int window = glutGetWindow();
+
+ if (winIdx)
+ (*winIdx) = window==windows[0] ? 0 :
+ window==windows[1] ? 1 :
+ window==windows[2] ? 2 : 3;
+
+ return window;
+}
+
+static void
+Mod2Text(int mods, char *text)
+{
+ if (mods&GLUT_ACTIVE_CTRL)
+ strcat(text,"CTRL");
+ if (mods&GLUT_ACTIVE_SHIFT)
+ {
+ if (text[0])
+ strcat(text,"+SHIFT");
+ else
+ strcat(text,"SHIFT");
+ }
+ if (mods&GLUT_ACTIVE_ALT)
+ {
+ if (text[0])
+ strcat(text,"+ALT");
+ else
+ strcat(text,"ALT");
+ }
+
+ if (!text[0])
+ strcat(text,"none");
+}
+
static void
Display(void)
{
- int window = glutGetWindow () ;
- glClear( GL_COLOR_BUFFER_BIT );
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
+ glClear ( GL_COLOR_BUFFER_BIT );
+
+ glDisable ( GL_DEPTH_TEST );
+ glMatrixMode ( GL_PROJECTION );
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(0, glutGet ( GLUT_WINDOW_WIDTH ),
+ 0, glutGet ( GLUT_WINDOW_HEIGHT ), -1, 1 );
+ glMatrixMode ( GL_MODELVIEW );
+ glPushMatrix ();
+ glLoadIdentity ();
+ glColor3ub ( 0, 0, 0 );
+ glRasterPos2i ( 10, glutGet ( GLUT_WINDOW_HEIGHT ) - 20 ); /* 10pt margin above 10pt letters */
+
+ if ( entry_called[winIdx] )
+ {
+ bitmapPrintf ( "Entry %d: %d\n", entry_seq[winIdx], entry_state[winIdx] );
+ }
+
+ if ( visibility_called[winIdx] )
+ {
+ bitmapPrintf ( "Visibility %d: %d\n", visibility_seq[winIdx], visibility_vis[winIdx] );
+ }
+
+ if ( windowStatus_called[winIdx] )
+ {
+ bitmapPrintf ( "WindowStatus %d: %d\n", windowStatus_seq[winIdx], windowStatus_state[winIdx] );
+ }
+
+ if ( reshape_called[winIdx] )
+ {
+ bitmapPrintf ( "Reshape %d: %d %d\n", reshape_seq[winIdx], reshape_width[winIdx], reshape_height[winIdx] );
+ }
+
+ if ( position_called[winIdx] )
+ {
+ bitmapPrintf ( "Position %d: %d %d\n", position_seq[winIdx], position_left[winIdx], position_top[winIdx] );
+ }
+
+ if ( key_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(key_mod[winIdx],mods);
+ bitmapPrintf ( "Key %d: %d(%c) %d %d (mod: %s)\n", key_seq[winIdx], key_key[winIdx], key_key[winIdx], key_x[winIdx], key_y[winIdx], mods );
+ }
+
+ if ( keyup_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(keyup_mod[winIdx],mods);
+ bitmapPrintf ( "Key Up %d: %d(%c) %d %d (mod: %s)\n", keyup_seq[winIdx], keyup_key[winIdx], keyup_key[winIdx], keyup_x[winIdx], keyup_y[winIdx], mods );
+ }
+
+ if ( special_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(special_mod[winIdx],mods);
+ bitmapPrintf ( "Special %d: %d(%c) %d %d (mod: %s)\n", special_seq[winIdx], special_key[winIdx], special_key[winIdx], special_x[winIdx], special_y[winIdx], mods );
+ }
+
+ if ( specialup_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(specialup_mod[winIdx],mods);
+ bitmapPrintf ( "Special Up %d: %d(%c) %d %d (mod: %s)\n", specialup_seq[winIdx], specialup_key[winIdx], specialup_key[winIdx], specialup_x[winIdx], specialup_y[winIdx], mods );
+ }
+
+ if ( joystick_called[winIdx] )
+ {
+ bitmapPrintf ( "Joystick %d: %d %d %d %d\n", joystick_seq[winIdx], joystick_a[winIdx], joystick_b[winIdx], joystick_c[winIdx], joystick_d[winIdx] );
+ }
+
+ if ( mouse_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(mouse_mod[winIdx],mods);
+ bitmapPrintf ( "Mouse %d: %d %d %d %d (mod: %s)\n", mouse_seq[winIdx], mouse_button[winIdx], mouse_updown[winIdx], mouse_x[winIdx], mouse_y[winIdx], mods );
+ }
+
+ if ( mousewheel_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(mousewheel_mod[winIdx],mods);
+ bitmapPrintf ( "Mouse Wheel %d: %d %d %d %d (mod: %s)\n", mousewheel_seq[winIdx], mousewheel_number[winIdx], mousewheel_direction[winIdx], mousewheel_x[winIdx], mousewheel_y[winIdx], mods );
+ }
+
+ if ( motion_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(motion_mod[winIdx],mods);
+ bitmapPrintf ( "Motion %d: %d %d (mod: %s)\n", motion_seq[winIdx], motion_x[winIdx], motion_y[winIdx], mods );
+ }
+
+ if ( passivemotion_called[winIdx] )
+ {
+ char mods[50] = {0};
+ Mod2Text(passivemotion_mod[winIdx],mods);
+ bitmapPrintf ( "Passive Motion %d: %d %d (mod: %s)\n", passivemotion_seq[winIdx], passivemotion_x[winIdx], passivemotion_y[winIdx], mods );
+ }
+
+ glMatrixMode ( GL_PROJECTION );
+ glPopMatrix ();
+ glMatrixMode ( GL_MODELVIEW );
+ glPopMatrix ();
+ glEnable ( GL_DEPTH_TEST );
printf ( "%6d Window %d Display Callback\n",
++sequence_number, window ) ;
glutSwapBuffers();
}
+static void
+Warning(const char *fmt, va_list ap)
+{
+ printf("%6d Warning callback:\n",++sequence_number);
+
+ /* print warning message */
+ vprintf(fmt, ap);
+}
+
+static void
+Error(const char *fmt, va_list ap)
+{
+ char dummy_string[STRING_LENGTH];
+ printf("%6d Error callback:\n",++sequence_number);
+
+ /* print warning message */
+ vprintf(fmt, ap);
+ printf("\n");
+
+ /* terminate program, after pause for input so user can see */
+ printf ( "Please enter something to exit: " );
+ fgets ( dummy_string, STRING_LENGTH, stdin );
+
+ /* Call exit directly as freeglut is messed
+ * up internally when an error is called.
+ */
+ exit(1);
+}
+
static void
Reshape(int width, int height)
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Reshape Callback: %d %d\n",
++sequence_number, window, width, height ) ;
+ reshape_called[winIdx] = 1 ;
+ reshape_width[winIdx] = width ;
+ reshape_height[winIdx] = height ;
+ reshape_seq[winIdx] = sequence_number ;
+ glViewport(0,0,width,height);
+ glutPostRedisplay () ;
}
static void
-Key(unsigned char key, int x, int y)
+Position(int left, int top)
{
- int window = glutGetWindow () ;
- printf ( "%6d Window %d Keyboard Callback: %d %d %d\n",
- ++sequence_number, window, key, x, y ) ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
+ printf ( "%6d Window %d Position Callback: %d %d\n",
+ ++sequence_number, window, left, top ) ;
+ position_called[winIdx] = 1 ;
+ position_left[winIdx] = left ;
+ position_top[winIdx] = top ;
+ position_seq[winIdx] = sequence_number ;
+ glutPostRedisplay () ;
}
static void
-Special(int key, int x, int y)
+Key(unsigned char key, int x, int y)
{
- int window = glutGetWindow () ;
- printf ( "%6d Window %d Special Key Callback: %d %d %d\n",
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
+ printf ( "%6d Window %d Keyboard Callback: %d %d %d\n",
++sequence_number, window, key, x, y ) ;
+ key_called[winIdx] = 1 ;
+ key_key[winIdx] = key ;
+ key_x[winIdx] = x ;
+ key_y[winIdx] = y ;
+ key_seq[winIdx] = sequence_number ;
+ key_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
-Visibility(int vis)
+KeyUp(unsigned char key, int x, int y)
{
- int window = glutGetWindow () ;
- printf ( "%6d Window %d Visibility Callback: %d\n",
- ++sequence_number, window, vis ) ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
+ printf ( "%6d Window %d Key Release Callback: %d %d %d\n",
+ ++sequence_number, window, key, x, y ) ;
+ keyup_called[winIdx] = 1 ;
+ keyup_key[winIdx] = key ;
+ keyup_x[winIdx] = x ;
+ keyup_y[winIdx] = y ;
+ keyup_seq[winIdx] = sequence_number ;
+ keyup_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
-KeyUp(unsigned char key, int x, int y)
+Special(int key, int x, int y)
{
- int window = glutGetWindow () ;
- printf ( "%6d Window %d Key Release Callback: %d %d %d\n",
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
+ printf ( "%6d Window %d Special Key Callback: %d %d %d\n",
++sequence_number, window, key, x, y ) ;
+ special_called[winIdx] = 1 ;
+ special_key[winIdx] = key ;
+ special_x[winIdx] = x ;
+ special_y[winIdx] = y ;
+ special_seq[winIdx] = sequence_number ;
+ special_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
SpecialUp(int key, int x, int y)
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Special Key Release Callback: %d %d %d\n",
++sequence_number, window, key, x, y ) ;
+ specialup_called[winIdx] = 1 ;
+ specialup_key[winIdx] = key ;
+ specialup_x[winIdx] = x ;
+ specialup_y[winIdx] = y ;
+ specialup_seq[winIdx] = sequence_number ;
+ specialup_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
-Joystick( unsigned int a, int b, int c, int d)
+Joystick( unsigned int a, int b, int c, int d) /* Need meaningful names */
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Joystick Callback: %d %d %d %d\n",
++sequence_number, window, a, b, c, d ) ;
+ joystick_called[winIdx] = 1 ;
+ joystick_a[winIdx] = a ;
+ joystick_b[winIdx] = b ;
+ joystick_c[winIdx] = c ;
+ joystick_d[winIdx] = d ;
+ joystick_seq[winIdx] = sequence_number ;
+ glutPostRedisplay () ;
}
static void
Mouse(int button, int updown, int x, int y)
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Mouse Click Callback: %d %d %d %d\n",
++sequence_number, window, button, updown, x, y ) ;
+ mouse_called[winIdx] = 1 ;
+ mouse_button[winIdx] = button ;
+ mouse_updown[winIdx] = updown ;
+ mouse_x[winIdx] = x ;
+ mouse_y[winIdx] = y ;
+ mouse_seq[winIdx] = sequence_number ;
+ mouse_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
MouseWheel(int wheel_number, int direction, int x, int y)
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Mouse Wheel Callback: %d %d %d %d\n",
++sequence_number, window, wheel_number, direction, x, y ) ;
+ mousewheel_called[winIdx] = 1 ;
+ mousewheel_number[winIdx] = wheel_number ;
+ mousewheel_direction[winIdx] = direction ;
+ mousewheel_x[winIdx] = x ;
+ mousewheel_y[winIdx] = y ;
+ mousewheel_seq[winIdx] = sequence_number ;
+ mousewheel_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
Motion(int x, int y)
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Mouse Motion Callback: %d %d\n",
++sequence_number, window, x, y ) ;
+ motion_called[winIdx] = 1 ;
+ motion_x[winIdx] = x ;
+ motion_y[winIdx] = y ;
+ motion_seq[winIdx] = sequence_number ;
+ motion_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
PassiveMotion(int x, int y)
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Mouse Passive Motion Callback: %d %d\n",
++sequence_number, window, x, y ) ;
+ passivemotion_called[winIdx] = 1 ;
+ passivemotion_x[winIdx] = x ;
+ passivemotion_y[winIdx] = y ;
+ passivemotion_seq[winIdx] = sequence_number ;
+ passivemotion_mod[winIdx] = glutGetModifiers() ;
+ glutPostRedisplay () ;
}
static void
Entry(int state)
{
- int window = glutGetWindow () ;
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
printf ( "%6d Window %d Entry Callback: %d\n",
++sequence_number, window, state ) ;
+ entry_called[winIdx] = 1 ;
+ entry_seq[winIdx] = sequence_number;
+ entry_state[winIdx] = state;
+ glutPostRedisplay () ;
}
static void
Close(void)
{
- int window = glutGetWindow () ;
+ int window = getWindowAndIdx(NULL);
printf ( "%6d Window %d Close Callback\n",
++sequence_number, window ) ;
}
+static void
+OverlayDisplay(void)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d OverlayDisplay Callback\n",
+ ++sequence_number, window ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+Visibility(int vis)
+{
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
+ printf ( "%6d Window %d Visibility Callback: %d\n",
+ ++sequence_number, window, vis ) ;
+ visibility_called[winIdx] = 1 ;
+ visibility_vis[winIdx] = vis ;
+ visibility_seq[winIdx] = sequence_number ;
+ glutPostRedisplay () ;
+}
+static void
+WindowStatus(int state)
+{
+ int winIdx;
+ int window = getWindowAndIdx(&winIdx);
+ printf ( "%6d Window %d WindowStatus Callback: %d\n",
+ ++sequence_number, window, state ) ;
+ windowStatus_called[winIdx] = 1 ;
+ windowStatus_state[winIdx] = state ;
+ windowStatus_seq[winIdx] = sequence_number ;
+ glutPostRedisplay () ;
+}
+
+static void
+SpaceMotion(int x, int y, int z)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d SpaceMotion Callback: %d %d %d\n",
+ ++sequence_number, window, x, y, z ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+SpaceRotation(int x, int y, int z)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d SpaceRotation Callback: %d %d %d\n",
+ ++sequence_number, window, x, y, z ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+SpaceButton(int button, int updown)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d SpaceButton Callback: %d %d\n",
+ ++sequence_number, window, button, updown ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+Dials(int x, int y)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d Dials Callback: %d %d\n",
+ ++sequence_number, window, x, y ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+ButtonBox(int button, int updown)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d ButtonBox Callback: %d %d\n",
+ ++sequence_number, window, button, updown ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+TabletMotion(int x, int y)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d TabletMotion Callback: %d %d\n",
+ ++sequence_number, window, x, y ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+TabletButton(int button, int updown, int x, int y)
+{
+ int window = getWindowAndIdx(NULL);
+ printf ( "%6d Window %d TabletButton Callback: %d %d %d %d\n",
+ ++sequence_number, window, button, updown, x, y ) ;
+ glutPostRedisplay () ;
+}
+
+static void
+MenuCallback ( int value )
+{
+ int menu = glutGetMenu();
+ int window = getWindowAndIdx(NULL);
+ printf( "%6d Menu %d MenuCallback for menu opened in Window %d - value is %d\n",
+ ++sequence_number, menu, window, value );
+}
+
+static void
+MenuDestroy( void )
+{
+ int menu = glutGetMenu();
+ menudestroy_called = 1 ;
+ printf ( "%6d Menu %d MenuDestroy Callback\n",
+ ++sequence_number, menu ) ;
+}
+
+static void
+MenuStatus( int status, int x, int y )
+{
+ /* Menu and window for which this event is triggered are current when the callback is called */
+ int menu = glutGetMenu();
+ int window = getWindowAndIdx(NULL);
+ menustatus_called = 1 ;
+ printf ( "%6d Menu %d MenuStatus Callback in Window %d: %d %d %d\n",
+ ++sequence_number, menu, window, status, x, y ) ;
+ glutPostRedisplay () ;
+}
+
+
+static void
+MenuState( int status )
+{
+ /* Menu and window for which this event is triggered are current when the callback is called */
+ int menu = glutGetMenu();
+ int window = getWindowAndIdx(NULL);
+ menustate_called = 1 ;
+ printf ( "%6d Menu %d MenuState Callback in Window %d: %d\n",
+ ++sequence_number, menu, window, status) ;
+ glutPostRedisplay () ;
+}
+
+static void Idle ( void )
+{
+ ++sequence_number ;
+}
+
+static void SetWindowCallbacks( int first )
+{
+ /* All these callbacks are set for only the current window */
+ glutDisplayFunc( Display );
+ glutReshapeFunc( Reshape );
+ glutPositionFunc( Position );
+ glutKeyboardFunc( Key );
+ glutSpecialFunc( Special );
+ glutKeyboardUpFunc( KeyUp );
+ glutSpecialUpFunc( SpecialUp );
+ if (first)
+ glutJoystickFunc( Joystick, 100 );
+ glutMouseFunc ( Mouse ) ;
+ glutMouseWheelFunc ( MouseWheel ) ;
+ glutMotionFunc ( Motion ) ;
+ glutPassiveMotionFunc ( PassiveMotion ) ;
+ glutEntryFunc ( Entry ) ;
+ glutCloseFunc ( Close ) ;
+ glutOverlayDisplayFunc ( OverlayDisplay ) ;
+ glutSpaceballMotionFunc ( SpaceMotion ) ;
+ glutSpaceballRotateFunc ( SpaceRotation ) ;
+ glutSpaceballButtonFunc ( SpaceButton ) ;
+ glutButtonBoxFunc ( ButtonBox ) ;
+ glutDialsFunc ( Dials ) ;
+ glutTabletMotionFunc ( TabletMotion ) ;
+ glutTabletButtonFunc ( TabletButton ) ;
+ /* glutVisibilityFunc is deprecated in favor of glutWindowStatusFunc, which provides more detail.
+ * Setting one of these overwrites the other (see docs).
+ */
+ glutVisibilityFunc ( Visibility ); /* This will thus never be called, as glutWindowStatusFunc is set afterwards */
+ glutWindowStatusFunc ( WindowStatus ) ;
+}
int
main(int argc, char *argv[])
{
- int freeglut_window, aux_window ;
+ char dummy_string[STRING_LENGTH];
+
+ int menuID, subMenuA, subMenuB;
+ glutInitWarningFunc(Warning);
+ glutInitErrorFunc(Error);
glutInitWindowSize(500, 250);
glutInitWindowPosition ( 140, 140 );
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE );
glutInit(&argc, argv);
+ /* global setting: mainloop does not return when a window is closed, only returns when all windows are closed */
+ glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE,GLUT_ACTION_CONTINUE_EXECUTION);
+ /* global setting: repeated keys generating by keeping the key pressed down are passed on to the keyboard callback */
+ /* There are two functions to control this behavior, glutSetKeyRepeat to set it globally, and glutIgnoreKeyRepeat to set it per window.
+ * These two interact however. If key repeat is globally switched off (glutSetKeyRepeat(GLUT_KEY_REPEAT_OFF)), it cannot be overridden
+ * (switched back on) for a specific window with glutIgnoreKeyRepeat. However, if key repeat is globally switched on
+ * (glutSetKeyRepeat(GLUT_KEY_REPEAT_ON)), it can be overridden (switched off) with glutIgnoreKeyRepeat on a per-window basis. That is
+ * what we demonstrate here.
+ */
+ glutSetKeyRepeat(GLUT_KEY_REPEAT_ON);
+
+ /* Set other global callback (global as in not associated with any specific menu or window) */
+ glutIdleFunc ( Idle );
+ glutMenuStatusFunc ( MenuStatus );
+ glutMenuStateFunc ( MenuState ); /* Note that glutMenuStatusFunc is an enhanced version of the deprecated glutMenuStateFunc. */
+
- freeglut_window = glutCreateWindow( "Callback Demo" );
- printf ( "Creating window %d as 'Callback Demo'\n", freeglut_window ) ;
+ /* Open first window */
+ windows[0] = glutCreateWindow( "Callback Demo" );
+ printf ( "Creating window %d as 'Callback Demo'\n", windows[0] ) ;
glClearColor(1.0, 1.0, 1.0, 1.0);
- glutDisplayFunc( Display );
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutSpecialFunc( Special );
- glutVisibilityFunc( Visibility );
- glutKeyboardUpFunc( KeyUp );
- glutSpecialUpFunc( SpecialUp );
- glutJoystickFunc( Joystick, 10 );
- glutMouseFunc ( Mouse ) ;
- glutMouseWheelFunc ( MouseWheel ) ;
- glutMotionFunc ( Motion ) ;
- glutPassiveMotionFunc ( PassiveMotion ) ;
- glutEntryFunc ( Entry ) ;
- glutCloseFunc ( Close ) ;
-
- aux_window = glutCreateWindow( "Second Window" );
- printf ( "Creating window %d as 'Second Window'\n", aux_window ) ;
+ /* callbacks, settings and menus for this window */
+ SetWindowCallbacks( 1 );
+ glutIgnoreKeyRepeat(GL_TRUE);
+ glutSetIconTitle("Icon Test - Callback Demo");
+
+ subMenuA = glutCreateMenu( MenuCallback );
+ glutAddMenuEntry( "Sub menu A1 (01)", 11 );
+ glutAddMenuEntry( "Sub menu A2 (02)", 12 );
+ glutAddMenuEntry( "Sub menu A3 (03)", 13 );
+ glutMenuDestroyFunc ( MenuDestroy ); /* callback specific to this menu */
+
+ subMenuB = glutCreateMenu( MenuCallback );
+ glutAddMenuEntry( "Sub menu B1 (04)", 14 );
+ glutAddMenuEntry( "Sub menu B2 (05)", 15 );
+ glutAddMenuEntry( "Sub menu B3 (06)", 16 );
+ glutAddSubMenu( "Going to sub menu A", subMenuA );
+ glutMenuDestroyFunc ( MenuDestroy ); /* callback specific to this menu */
+
+ menuID = glutCreateMenu( MenuCallback );
+ glutAddMenuEntry( "Entry one", 21 );
+ glutAddMenuEntry( "Entry two", 22 );
+ glutAddMenuEntry( "Entry three", 23 );
+ glutAddMenuEntry( "Entry four", 24 );
+ glutAddMenuEntry( "Entry five", 25 );
+ glutAddSubMenu( "Enter sub menu A", subMenuA );
+ glutAddSubMenu( "Enter sub menu B", subMenuB );
+ glutMenuDestroyFunc ( MenuDestroy ); /* callback specific to this menu */
+
+ glutAttachMenu( GLUT_LEFT_BUTTON );
+
+
+ /* Position second window right next to the first */
+ glutInitWindowPosition ( 140+500+2*glutGet(GLUT_WINDOW_BORDER_WIDTH), 140 );
+ glutInitWindowSize(600, 600);
+ windows[1] = glutCreateWindow( "Second Window" );
+ printf ( "Creating window %d as 'Second Window'\n", windows[1] ) ;
glClearColor(1.0, 1.0, 1.0, 1.0);
- glutDisplayFunc( Display );
- glutReshapeFunc( Reshape );
- glutKeyboardFunc( Key );
- glutSpecialFunc( Special );
- glutVisibilityFunc( Visibility );
- glutKeyboardUpFunc( KeyUp );
- glutSpecialUpFunc( SpecialUp );
-// glutJoystickFunc( Joystick, 10 );
- glutMouseFunc ( Mouse ) ;
- glutMouseWheelFunc ( MouseWheel ) ;
- glutMotionFunc ( Motion ) ;
- glutPassiveMotionFunc ( PassiveMotion ) ;
- glutEntryFunc ( Entry ) ;
- glutCloseFunc ( Close ) ;
+ /* callbacks, settings and menus for this window */
+ SetWindowCallbacks( 0 );
+ glutIgnoreKeyRepeat(GL_TRUE);
+
+ glutSetMenu(subMenuB);
+ glutAttachMenu( GLUT_RIGHT_BUTTON );
+
+
+ /* position a third window as a subwindow of the second */
+ windows[2] = glutCreateSubWindow(windows[1],0,300,600,300);
+ printf ( "Creating window %d as subwindow to 'Second Window'\n", windows[2] ) ;
+
+ glClearColor(0.7f, 0.7f, 0.7f, 1.0);
+
+ /* callbacks, settings and menus for this window */
+ SetWindowCallbacks( 0 );
+ glutSetCursor(GLUT_CURSOR_CROSSHAIR); /* Cursors are per window */
+
+ glutSetMenu(subMenuA);
+ glutAttachMenu( GLUT_RIGHT_BUTTON );
+
+
+ /* position a fourth window as a subsubwindow (grandchild) of the second */
+ windows[3] = glutCreateSubWindow(windows[2],300,0,300,300);
+ printf ( "Creating window %d as subsubwindow to 'Second Window'\n", windows[3] ) ;
+
+ glClearColor(0.4f, 0.4f, 0.4f, 1.0);
+
+ /* callbacks and menus for this window */
+ SetWindowCallbacks( 0 );
+ glutSetCursor(GLUT_CURSOR_INHERIT); /* Inherit cursor look from parent (this is default on window creation) - comment the below to see in action */
+ glutSetCursor(GLUT_CURSOR_CYCLE);
+
+
+ printf ( "Please enter something to continue: " );
+ fgets ( dummy_string, STRING_LENGTH, stdin );
glutMainLoop();
printf ( "Back from the 'freeglut' main loop\n" ) ;
- return 0; /* ANSI C requires main to return int. */
+ return EXIT_SUCCESS;
}
projects / freeglut / blobdiff