Added GLUT_ACTIVE_SUPER modifier, and corresponding GLUT_KEY_SUPER_L and
[freeglut] / src / x11 / fg_main_x11.c
index 2e13f38..740ed0b 100644 (file)
@@ -28,9 +28,7 @@
 
 #include <GL/freeglut.h>
 #include "../fg_internal.h"
-#ifdef HAVE_ERRNO_H
-#    include <errno.h>
-#endif
+#include <errno.h>
 #include <stdarg.h>
 
 
@@ -118,10 +116,8 @@ void fgPlatformSleepForEvents( fg_time_t msec )
         wait.tv_usec = (msec % 1000) * 1000;
         err = select( socket+1, &fdset, NULL, NULL, &wait );
 
-#ifdef HAVE_ERRNO_H
         if( ( -1 == err ) && ( errno != EINTR ) )
             fgWarning ( "freeglut select() error: %d", errno );
-#endif
     }
 }
 
@@ -139,6 +135,8 @@ int fgPlatformGetModifiers( int state )
         ret |= GLUT_ACTIVE_CTRL;
     if( state & Mod1Mask )
         ret |= GLUT_ACTIVE_ALT;
+    if( state & Mod2Mask )
+        ret |= GLUT_ACTIVE_SUPER;
 
     return ret;
 }
@@ -811,11 +809,8 @@ void fgPlatformProcessSingleEvent ( void )
         case ButtonRelease:
         case ButtonPress:
         {
-            GLboolean pressed = GL_TRUE;
-            int button;
-
-            if( event.type == ButtonRelease )
-                pressed = GL_FALSE ;
+            GLboolean pressed;
+            int button, x, y;
 
             /*
              * A mouse button has been pressed or released. Traditionally,
@@ -833,59 +828,46 @@ void fgPlatformProcessSingleEvent ( void )
              */
             button = event.xbutton.button - 1;
 
+            pressed = event.type == ButtonPress ? GL_TRUE : GL_FALSE;
+            x = event.xbutton.x;
+            y = event.xbutton.y;
+
             /*
              * Do not execute the application's mouse callback if a menu
              * is hooked to this button.  In that case an appropriate
              * private call should be generated.
              */
-            if( fgCheckActiveMenu( window, button, pressed,
-                                   event.xbutton.x, event.xbutton.y ) )
+            if(fgCheckActiveMenu( window, button, pressed, x, y))
                 break;
 
             /*
              * Check if there is a mouse or mouse wheel callback hooked to the
              * window
              */
-            if( ! FETCH_WCB( *window, Mouse ) &&
-                ! FETCH_WCB( *window, MouseWheel ) )
+            if(!FETCH_WCB(*window, Mouse) && !FETCH_WCB(*window, MouseWheel))
                 break;
 
-            fgState.Modifiers = fgPlatformGetModifiers( event.xbutton.state );
+            fgState.Modifiers = fgPlatformGetModifiers(event.xbutton.state);
 
-            /* Finally execute the mouse or mouse wheel callback */
-            if( ( button < glutDeviceGet ( GLUT_NUM_MOUSE_BUTTONS ) ) || ( ! FETCH_WCB( *window, MouseWheel ) ) )
-                INVOKE_WCB( *window, Mouse, ( button,
-                                              pressed ? GLUT_DOWN : GLUT_UP,
-                                              event.xbutton.x,
-                                              event.xbutton.y )
-                );
-            else
-            {
-                /*
-                 * Map 4 and 5 to wheel zero; EVEN to +1, ODD to -1
-                 *  "  6 and 7 "    "   one; ...
-                 *
-                 * XXX This *should* be behind some variables/macros,
-                 * XXX since the order and numbering isn't certain
-                 * XXX See XFree86 configuration docs (even back in the
-                 * XXX 3.x days, and especially with 4.x).
-                 *
-                 * XXX Note that {button} has already been decremented
-                 * XXX in mapping from X button numbering to GLUT.
-                                *
-                                * XXX Should add support for partial wheel turns as Windows does -- 5/27/11
-                 */
-                int wheel_number = (button - glutDeviceGet ( GLUT_NUM_MOUSE_BUTTONS )) / 2;
-                int direction = -1;
-                if( button % 2 )
-                    direction = 1;
-
-                if( pressed )
-                    INVOKE_WCB( *window, MouseWheel, ( wheel_number,
-                                                       direction,
-                                                       event.xbutton.x,
-                                                       event.xbutton.y )
-                    );
+            /* Finally execute the mouse or mouse wheel callback.
+             * The mouse wheel is reported as buttons 4 (down) and 5 (up) by
+             * the X server. "button" has been converted to 0-based above, so
+             * that's 3 and 4 for us.
+             * If a wheel callback hasn't been registered, we simply treat them
+             * as button presses and pass them to the mouse handler. This is
+             * important for compatibility with the original GLUT.
+             */
+            if(button < 3 || button > 4 || !FETCH_WCB(*window, MouseWheel)) {
+                INVOKE_WCB(*window, Mouse, (button, pressed ? GLUT_DOWN : GLUT_UP, x, y));
+            } else {
+                if(pressed) {
+                    int dir = button & 1 ? 1 : -1;
+                    /* there's no way to know if X buttons after 5 are more
+                     * wheels/wheel axes, or regular buttons. So we'll only
+                     * ever invoke the wheel CB for wheel 0.
+                     */
+                    INVOKE_WCB(*window, MouseWheel, (0, dir, x, y));
+                }
             }
             fgState.Modifiers = INVALID_MODIFIERS;
         }
@@ -894,8 +876,10 @@ void fgPlatformProcessSingleEvent ( void )
         case KeyRelease:
         case KeyPress:
         {
-            FGCBKeyboard keyboard_cb;
-            FGCBSpecial special_cb;
+            FGCBKeyboardUC keyboard_cb;
+            FGCBSpecialUC special_cb;
+            FGCBUserData keyboard_ud;
+            FGCBUserData special_ud;
 
             GETWINDOW( xkey );
             GETMOUSE( xkey );
@@ -936,13 +920,17 @@ void fgPlatformProcessSingleEvent ( void )
 
             if( event.type == KeyPress )
             {
-                keyboard_cb = (FGCBKeyboard)( FETCH_WCB( *window, Keyboard ));
-                special_cb  = (FGCBSpecial) ( FETCH_WCB( *window, Special  ));
+                keyboard_cb = (FGCBKeyboardUC)( FETCH_WCB( *window, Keyboard ));
+                special_cb  = (FGCBSpecialUC) ( FETCH_WCB( *window, Special  ));
+                keyboard_ud = FETCH_USER_DATA_WCB( *window, Keyboard );
+                special_ud  = FETCH_USER_DATA_WCB( *window, Special  );
             }
             else
             {
-                keyboard_cb = (FGCBKeyboard)( FETCH_WCB( *window, KeyboardUp ));
-                special_cb  = (FGCBSpecial) ( FETCH_WCB( *window, SpecialUp  ));
+                keyboard_cb = (FGCBKeyboardUC)( FETCH_WCB( *window, KeyboardUp ));
+                special_cb  = (FGCBSpecialUC) ( FETCH_WCB( *window, SpecialUp  ));
+                keyboard_ud = FETCH_USER_DATA_WCB( *window, KeyboardUp );
+                special_ud  = FETCH_USER_DATA_WCB( *window, SpecialUp  );
             }
 
             /* Is there a keyboard/special callback hooked for this window? */
@@ -967,7 +955,8 @@ void fgPlatformProcessSingleEvent ( void )
                         fgSetWindow( window );
                         fgState.Modifiers = fgPlatformGetModifiers( event.xkey.state );
                         keyboard_cb( asciiCode[ 0 ],
-                                     event.xkey.x, event.xkey.y
+                                     event.xkey.x, event.xkey.y,
+                                     keyboard_ud
                         );
                         fgState.Modifiers = INVALID_MODIFIERS;
                     }
@@ -1025,6 +1014,14 @@ void fgPlatformProcessSingleEvent ( void )
                     case XK_Control_R: special = GLUT_KEY_CTRL_R;     break;
                     case XK_Alt_L:     special = GLUT_KEY_ALT_L;      break;
                     case XK_Alt_R:     special = GLUT_KEY_ALT_R;      break;
+                    case XK_Meta_L:
+                    case XK_Super_L:
+                        special = GLUT_KEY_SUPER_L;
+                        break;
+                    case XK_Meta_R:
+                    case XK_Super_R:
+                        special = GLUT_KEY_SUPER_R;
+                        break;
                     }
 
                     /*
@@ -1035,7 +1032,7 @@ void fgPlatformProcessSingleEvent ( void )
                     {
                         fgSetWindow( window );
                         fgState.Modifiers = fgPlatformGetModifiers( event.xkey.state );
-                        special_cb( special, event.xkey.x, event.xkey.y );
+                        special_cb( special, event.xkey.x, event.xkey.y, special_ud );
                         fgState.Modifiers = INVALID_MODIFIERS;
                     }
                 }