e14743d1 |
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 */ |