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comparison src/video/bwindow/SDL_sysmouse.cc @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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children e8157fcb3114
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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 <string.h>
30
31 #include <AppKit.h>
32 #include <GameKit.h>
33
34 #include "SDL_error.h"
35 #include "SDL_BWin.h"
36
37 extern "C" {
38
39 #include "SDL_sysmouse_c.h"
40
41 /* Convert bits to padded bytes */
42 #define PADDED_BITS(bits) ((bits+7)/8)
43
44 /* The implementation dependent data for the window manager cursor */
45 struct WMcursor {
46 char *bits;
47 };
48
49 /* Can this be done in the BeOS? */
50 WMcursor *BE_CreateWMCursor(_THIS,
51 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
52 {
53 WMcursor *cursor;
54 int allowed_x;
55 int allowed_y;
56 int run, pad, i;
57 char *cptr;
58
59 allowed_x = 16; /* BeOS limitation */
60 allowed_y = 16; /* BeOS limitation */
61 if ( (w > allowed_x) || (h > allowed_y) ) {
62 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
63 allowed_x, allowed_y);
64 return(NULL);
65 }
66
67 /* Allocate the cursor */
68 cursor = (WMcursor *)malloc(sizeof(WMcursor));
69 if ( cursor == NULL ) {
70 SDL_OutOfMemory();
71 return(NULL);
72 }
73 cursor->bits = (char *)malloc(4+2*((allowed_x/8)*allowed_y));
74 if ( cursor->bits == NULL ) {
75 free(cursor);
76 SDL_OutOfMemory();
77 return(NULL);
78 }
79 cursor->bits[0] = allowed_y; /* Size of the cursor */
80 cursor->bits[1] = 1; /* Bit depth of cursor */
81 cursor->bits[2] = hot_y;
82 cursor->bits[3] = hot_x;
83 cptr = &cursor->bits[4];
84
85 /* Pad out to the normal cursor size */
86 run = PADDED_BITS(w);
87 pad = PADDED_BITS(allowed_x)-run;
88 for ( i=0; i<h; ++i ) {
89 memcpy(cptr, data, run);
90 memset(cptr+run, 0, pad);
91 data += run;
92 cptr += (run+pad);
93 }
94 for ( ; i<allowed_y; ++i ) {
95 memset(cptr, 0, run+pad);
96 cptr += (run+pad);
97 }
98 for ( i=0; i<h; ++i ) {
99 /* FIXME: The mask should be OR'd with the data to turn
100 inverted color pixels black, since inverted color pixels
101 aren't supported under BeOS.
102 */
103 memcpy(cptr, mask, run);
104 memset(cptr+run, 0, pad);
105 mask += run;
106 cptr += (run+pad);
107 }
108 for ( ; i<allowed_y; ++i ) {
109 memset(cptr, 0, run+pad);
110 cptr += (run+pad);
111 }
112 return(cursor);
113 }
114
115 int BE_ShowWMCursor(_THIS, WMcursor *cursor)
116 {
117 if ( be_app->Lock() ) {
118 if ( cursor == NULL ) {
119 if ( SDL_BlankCursor != NULL ) {
120 be_app->SetCursor(SDL_BlankCursor->bits);
121 }
122 } else {
123 be_app->SetCursor(cursor->bits);
124 }
125 be_app->Unlock();
126 }
127 return(1);
128 }
129
130 void BE_FreeWMCursor(_THIS, WMcursor *cursor)
131 {
132 free(cursor->bits);
133 free(cursor);
134 }
135
136 /* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */
137 void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
138 {
139 BPoint pt(x, y);
140 SDL_Win->Lock();
141 SDL_Win->ConvertToScreen(&pt);
142 SDL_Win->Unlock();
143 set_mouse_position((int32)pt.x, (int32)pt.y);
144 }
145
146 }; /* Extern C */