/
SDL_gemmouse.c
163 lines (130 loc) · 3.39 KB
/
SDL_gemmouse.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@libsdl.org
*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
/*
* GEM Mouse manager
*
* Patrice Mandin
*/
#include <stdlib.h>
#include <gem.h>
#include "SDL_error.h"
#include "SDL_mouse.h"
#include "SDL_events_c.h"
#include "SDL_cursor_c.h"
#include "SDL_gemmouse_c.h"
/* Defines */
#define MAXCURWIDTH 16
#define MAXCURHEIGHT 16
/* The implementation dependent data for the window manager cursor */
struct WMcursor {
MFORM *mform_p;
};
void GEM_FreeWMCursor(_THIS, WMcursor *cursor)
{
if (cursor == NULL)
return;
graf_mouse(ARROW, NULL);
if (cursor->mform_p != NULL)
free(cursor->mform_p);
free(cursor);
}
WMcursor *GEM_CreateWMCursor(_THIS,
Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
{
WMcursor *cursor;
MFORM *new_mform;
int i;
/* Check the size */
if ( (w > MAXCURWIDTH) || (h > MAXCURHEIGHT) ) {
SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
MAXCURWIDTH, MAXCURHEIGHT);
return(NULL);
}
/* Allocate the cursor memory */
cursor = (WMcursor *)malloc(sizeof(WMcursor));
if ( cursor == NULL ) {
SDL_OutOfMemory();
return(NULL);
}
/* Allocate mform */
new_mform = (MFORM *)malloc(sizeof(MFORM));
if (new_mform == NULL) {
free(cursor);
SDL_OutOfMemory();
return(NULL);
}
cursor->mform_p = new_mform;
new_mform->mf_xhot = hot_x;
new_mform->mf_yhot = hot_y;
new_mform->mf_nplanes = 1;
new_mform->mf_fg = 0;
new_mform->mf_bg = 1;
for (i=0;i<MAXCURHEIGHT;i++)
{
new_mform->mf_mask[i]=0;
new_mform->mf_data[i]=0;
}
if (w<=8) {
for (i=0;i<h;i++)
{
new_mform->mf_mask[i]= mask[i]<<8;
new_mform->mf_data[i]= data[i]<<8;
}
} else {
for (i=0;i<h;i++)
{
new_mform->mf_mask[i]= mask[i<<1]<<8 | mask[(i<<1)+1];
new_mform->mf_data[i]= data[i<<1]<<8 | data[(i<<1)+1];
}
}
return cursor;
}
int GEM_ShowWMCursor(_THIS, WMcursor *cursor)
{
if (cursor == NULL) {
graf_mouse(M_OFF, NULL);
} else if (cursor->mform_p) {
graf_mouse(USER_DEF, cursor->mform_p);
}
return 1;
}
#if 0
void GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
/* This seems to work only on AES 3.4 (Falcon) */
EVNTREC warpevent;
warpevent.ap_event = APPEVNT_MOUSE;
warpevent.ap_value = (x << 16) | y;
appl_tplay(&warpevent, 1, 1000);
}
#endif
void GEM_CheckMouseMode(_THIS)
{
/* If the mouse is hidden and input is grabbed, we use relative mode */
if ( !(SDL_cursorstate & CURSOR_VISIBLE) &&
(this->input_grab != SDL_GRAB_OFF) &&
(SDL_GetAppState() & SDL_APPACTIVE) ) {
GEM_mouse_relative = SDL_TRUE;
} else {
GEM_mouse_relative = SDL_FALSE;
}
}