| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #include <AppKit.h> |
| 25 | #include <GameKit.h> |
| 26 | |
| 27 | #include "SDL_BWin.h" |
| 28 | |
| 29 | extern "C" { |
| 30 | #include "../SDL_cursor_c.h" |
| 31 | #include "SDL_sysmouse_c.h" |
| 32 | |
| 33 | /* Convert bits to padded bytes */ |
| 34 | #define PADDED_BITS(bits) ((bits+7)/8) |
| 35 | |
| 36 | /* The implementation dependent data for the window manager cursor */ |
| 37 | struct WMcursor { |
| 38 | char *bits; |
| 39 | }; |
| 40 | |
| 41 | /* Can this be done in the BeOS? */ |
| 42 | WMcursor *BE_CreateWMCursor(_THIS, |
| 43 | Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) |
| 44 | { |
| 45 | WMcursor *cursor; |
| 46 | int allowed_x; |
| 47 | int allowed_y; |
| 48 | int run, pad, i; |
| 49 | char *cptr; |
| 50 | |
| 51 | allowed_x = 16; /* BeOS limitation */ |
| 52 | allowed_y = 16; /* BeOS limitation */ |
| 53 | if ( (w > allowed_x) || (h > allowed_y) ) { |
| 54 | SDL_SetError("Only cursors of dimension (%dx%d) are allowed", |
| 55 | allowed_x, allowed_y); |
| 56 | return(NULL); |
| 57 | } |
| 58 | |
| 59 | /* Allocate the cursor */ |
| 60 | cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor)); |
| 61 | if ( cursor == NULL ) { |
| 62 | SDL_OutOfMemory(); |
| 63 | return(NULL); |
| 64 | } |
| 65 | cursor->bits = (char *)SDL_malloc(4+2*((allowed_x/8)*allowed_y)); |
| 66 | if ( cursor->bits == NULL ) { |
| 67 | SDL_free(cursor); |
| 68 | SDL_OutOfMemory(); |
| 69 | return(NULL); |
| 70 | } |
| 71 | cursor->bits[0] = allowed_y; /* Size of the cursor */ |
| 72 | cursor->bits[1] = 1; /* Bit depth of cursor */ |
| 73 | cursor->bits[2] = hot_y; |
| 74 | cursor->bits[3] = hot_x; |
| 75 | cptr = &cursor->bits[4]; |
| 76 | |
| 77 | /* Pad out to the normal cursor size */ |
| 78 | run = PADDED_BITS(w); |
| 79 | pad = PADDED_BITS(allowed_x)-run; |
| 80 | for ( i=0; i<h; ++i ) { |
| 81 | SDL_memcpy(cptr, data, run); |
| 82 | SDL_memset(cptr+run, 0, pad); |
| 83 | data += run; |
| 84 | cptr += (run+pad); |
| 85 | } |
| 86 | for ( ; i<allowed_y; ++i ) { |
| 87 | SDL_memset(cptr, 0, run+pad); |
| 88 | cptr += (run+pad); |
| 89 | } |
| 90 | for ( i=0; i<h; ++i ) { |
| 91 | /* FIXME: The mask should be OR'd with the data to turn |
| 92 | inverted color pixels black, since inverted color pixels |
| 93 | aren't supported under BeOS. |
| 94 | */ |
| 95 | SDL_memcpy(cptr, mask, run); |
| 96 | SDL_memset(cptr+run, 0, pad); |
| 97 | mask += run; |
| 98 | cptr += (run+pad); |
| 99 | } |
| 100 | for ( ; i<allowed_y; ++i ) { |
| 101 | SDL_memset(cptr, 0, run+pad); |
| 102 | cptr += (run+pad); |
| 103 | } |
| 104 | return(cursor); |
| 105 | } |
| 106 | |
| 107 | int BE_ShowWMCursor(_THIS, WMcursor *cursor) |
| 108 | { |
| 109 | if ( be_app->Lock() ) { |
| 110 | if ( cursor == NULL ) { |
| 111 | if ( SDL_BlankCursor != NULL ) { |
| 112 | be_app->SetCursor(SDL_BlankCursor->bits); |
| 113 | } |
| 114 | } else { |
| 115 | be_app->SetCursor(cursor->bits); |
| 116 | } |
| 117 | be_app->Unlock(); |
| 118 | } |
| 119 | return(1); |
| 120 | } |
| 121 | |
| 122 | void BE_FreeWMCursor(_THIS, WMcursor *cursor) |
| 123 | { |
| 124 | SDL_free(cursor->bits); |
| 125 | SDL_free(cursor); |
| 126 | } |
| 127 | |
| 128 | /* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */ |
| 129 | void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y) |
| 130 | { |
| 131 | BPoint pt; |
| 132 | SDL_Win->GetXYOffset(pt.x, pt.y); |
| 133 | pt.x += x; |
| 134 | pt.y += y; |
| 135 | SDL_Win->Lock(); |
| 136 | SDL_Win->ConvertToScreen(&pt); |
| 137 | SDL_Win->Unlock(); |
| 138 | set_mouse_position((int32)pt.x, (int32)pt.y); |
| 139 | } |
| 140 | |
| 141 | /* Check to see if we need to enter or leave mouse relative mode */ |
| 142 | void BE_CheckMouseMode(_THIS) |
| 143 | { |
| 144 | /* If the mouse is hidden and input is grabbed, we use relative mode */ |
| 145 | if ( !(SDL_cursorstate & CURSOR_VISIBLE) && |
| 146 | (_this->input_grab != SDL_GRAB_OFF) ) { |
| 147 | mouse_relative = 1; |
| 148 | } else { |
| 149 | mouse_relative = 0; |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | }; /* Extern C */ |