src/video/maccommon/SDL_macmouse.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 04 Sep 2001 23:18:45 +0000
changeset 168 e92aa316c517
parent 0 74212992fb08
child 252 e8157fcb3114
permissions -rw-r--r--
Added Max's patches for building MacOS X apps on command line
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Library General Public
     7     License as published by the Free Software Foundation; either
     8     version 2 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Library General Public License for more details.
    14 
    15     You should have received a copy of the GNU Library General Public
    16     License along with this library; if not, write to the Free
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18 
    19     Sam Lantinga
    20     slouken@devolution.com
    21 */
    22 
    23 #ifdef SAVE_RCSID
    24 static char rcsid =
    25  "@(#) $Id$";
    26 #endif
    27 
    28 #include <stdlib.h>
    29 #include <stdio.h>
    30 #if TARGET_API_MAC_CARBON
    31 #include <Carbon.h>
    32 #else
    33 #include <Quickdraw.h>
    34 #endif
    35 
    36 /* Routines that are not supported by the Carbon API... */
    37 #if !TARGET_API_MAC_CARBON
    38 #include <CursorDevices.h>
    39 #endif
    40 
    41 #include "SDL_error.h"
    42 #include "SDL_mouse.h"
    43 #include "SDL_macmouse_c.h"
    44 
    45 
    46 /* The implementation dependent data for the window manager cursor */
    47 struct WMcursor {
    48 	Cursor curs;
    49 };
    50 
    51 
    52 void Mac_FreeWMCursor(_THIS, WMcursor *cursor)
    53 {
    54 	free(cursor);
    55 }
    56 
    57 WMcursor *Mac_CreateWMCursor(_THIS,
    58 		Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
    59 {
    60 	WMcursor *cursor;
    61 	int row, bytes;
    62 		
    63 	/* Allocate the cursor memory */
    64 	cursor = (WMcursor *)malloc(sizeof(WMcursor));
    65 	if ( cursor == NULL ) {
    66 		SDL_OutOfMemory();
    67 		return(NULL);
    68 	}
    69 	memset(cursor, 0, sizeof(*cursor));
    70     
    71     if (w > 16)
    72         w = 16;
    73     
    74     if (h > 16)
    75         h = 16;
    76     
    77 	bytes = (w+7)/8;
    78 
    79 	for ( row=0; row<h; ++row ) {
    80 		memcpy(&cursor->curs.data[row], data, bytes);
    81 		data += bytes;
    82 	}
    83 	for ( row=0; row<h; ++row ) {
    84 		memcpy(&cursor->curs.mask[row], mask, bytes);
    85 		mask += bytes;
    86 	}
    87 	cursor->curs.hotSpot.h = hot_x;
    88 	cursor->curs.hotSpot.v = hot_y;
    89 
    90 	/* That was easy. :) */
    91 	return(cursor);
    92 }
    93 
    94 int Mac_cursor_showing = 1;
    95 
    96 int Mac_ShowWMCursor(_THIS, WMcursor *cursor)
    97 {
    98 	if ( cursor == NULL ) {
    99 		if ( Mac_cursor_showing ) {
   100 			HideCursor();
   101 			Mac_cursor_showing = 0;
   102 		}
   103 	} else {
   104 		SetCursor(&cursor->curs);
   105 		if ( ! Mac_cursor_showing ) {
   106 			ShowCursor();
   107 			Mac_cursor_showing = 1;
   108 		}
   109 	}
   110 	return(1);
   111 }
   112 
   113 void Mac_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
   114 {
   115 #if !TARGET_API_MAC_CARBON
   116 	CursorDevice *cursordevice;
   117 
   118 	cursordevice = nil;
   119 	CursorDeviceNextDevice(&cursordevice);
   120 	if ( cursordevice != nil ) {
   121 		WindowPtr saveport;
   122 		Point where;
   123 
   124 		GetPort(&saveport);
   125 		SetPort(SDL_Window);
   126 		where.h = x;
   127 		where.v = y;
   128 		LocalToGlobal(&where);
   129 		SetPort(saveport);
   130 		CursorDeviceMoveTo(cursordevice, where.h, where.v);
   131 	}
   132 #endif /* !TARGET_API_MAC_CARBON */
   133 }
   134