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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
/*
* tkUnix.c --
*
* This file contains procedures that are UNIX/X-specific, and will
* probably have to be written differently for Windows or Macintosh
* platforms.
*
* Copyright (c) 1995 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tkInt.h"
#ifdef HAVE_XSS
# include <X11/extensions/scrnsaver.h>
# ifdef __APPLE__
/* Support for weak-linked libXss. */
# define HaveXSSLibrary() (XScreenSaverQueryInfo != NULL)
# else
/* Other platforms always link libXss. */
# define HaveXSSLibrary() (1)
# endif
#endif
/*
*----------------------------------------------------------------------
*
* TkGetServerInfo --
*
* Given a window, this procedure returns information about the window
* server for that window. This procedure provides the guts of the "winfo
* server" command.
*
* Results:
* Sets the interpreter result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
TkGetServerInfo(
Tcl_Interp *interp, /* The server information is returned in this
* interpreter's result. */
Tk_Window tkwin) /* Token for window; this selects a particular
* display and server. */
{
Tcl_SetObjResult(interp, Tcl_ObjPrintf("X%dR%d %s %d",
ProtocolVersion(Tk_Display(tkwin)),
ProtocolRevision(Tk_Display(tkwin)),
ServerVendor(Tk_Display(tkwin)),
VendorRelease(Tk_Display(tkwin))));
}
/*
*----------------------------------------------------------------------
*
* TkGetDefaultScreenName --
*
* Returns the name of the screen that Tk should use during
* initialization.
*
* Results:
* Returns the argument or a string that should not be freed by the
* caller.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
const char *
TkGetDefaultScreenName(
Tcl_Interp *interp, /* Interp used to find environment
* variables. */
const char *screenName) /* Screen name from command line, or NULL. */
{
if ((screenName == NULL) || (screenName[0] == '\0')) {
screenName = Tcl_GetVar2(interp, "env", "DISPLAY", TCL_GLOBAL_ONLY);
}
return screenName;
}
/*
*----------------------------------------------------------------------
*
* Tk_UpdatePointer --
*
* Unused function in UNIX
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
Tk_UpdatePointer(
Tk_Window tkwin, /* Window to which pointer event is reported.
* May be NULL. */
int x, int y, /* Pointer location in root coords. */
int state) /* Modifier state mask. */
{
/*
* This function intentionally left blank
*/
}
/*
*----------------------------------------------------------------------
*
* TkpBuildRegionFromAlphaData --
*
* Set up a rectangle of the given region based on the supplied alpha
* data.
*
* Results:
* None
*
* Side effects:
* The region is updated, with extra pixels added to it.
*
*----------------------------------------------------------------------
*/
void
TkpBuildRegionFromAlphaData(
TkRegion region, /* Region to be updated. */
unsigned x, unsigned y, /* Where in region to update. */
unsigned width, unsigned height,
/* Size of rectangle to update. */
unsigned char *dataPtr, /* Data to read from. */
unsigned pixelStride, /* Num bytes from one piece of alpha data to
* the next in the line. */
unsigned lineStride) /* Num bytes from one line of alpha data to
* the next line. */
{
unsigned char *lineDataPtr;
unsigned int x1, y1, end;
XRectangle rect;
for (y1 = 0; y1 < height; y1++) {
lineDataPtr = dataPtr;
for (x1 = 0; x1 < width; x1 = end) {
/*
* Search for first non-transparent pixel.
*/
while ((x1 < width) && !*lineDataPtr) {
x1++;
lineDataPtr += pixelStride;
}
end = x1;
/*
* Search for first transparent pixel.
*/
while ((end < width) && *lineDataPtr) {
end++;
lineDataPtr += pixelStride;
}
if (end > x1) {
rect.x = x + x1;
rect.y = y + y1;
rect.width = end - x1;
rect.height = 1;
TkUnionRectWithRegion(&rect, region, region);
}
}
dataPtr += lineStride;
}
}
/*
*----------------------------------------------------------------------
*
* Tk_GetUserInactiveTime --
*
* Return the number of milliseconds the user was inactive.
*
* Results:
* The number of milliseconds since the user's latest interaction with
* the system on the given display, or -1 if the XScreenSaver extension
* is not supported by the client libraries or the X server
* implementation.
*
* Side effects:
* None.
*----------------------------------------------------------------------
*/
long
Tk_GetUserInactiveTime(
Display *dpy) /* The display for which to query the inactive
* time. */
{
long inactiveTime = -1;
#ifdef HAVE_XSS
int eventBase, errorBase, major, minor;
/*
* Calling XScreenSaverQueryVersion seems to be needed to prevent a crash
* on some buggy versions of XFree86.
*/
if (HaveXSSLibrary()
&& XScreenSaverQueryExtension(dpy, &eventBase, &errorBase)
&& XScreenSaverQueryVersion(dpy, &major, &minor)) {
XScreenSaverInfo *info = XScreenSaverAllocInfo();
if (info == NULL) {
/*
* We are out of memory.
*/
Tcl_Panic("Out of memory: XScreenSaverAllocInfo failed in Tk_GetUserInactiveTime");
}
if (XScreenSaverQueryInfo(dpy, DefaultRootWindow(dpy), info)) {
inactiveTime = info->idle;
}
XFree(info);
}
#endif /* HAVE_XSS */
return inactiveTime;
}
/*
*----------------------------------------------------------------------
*
* Tk_ResetUserInactiveTime --
*
* Reset the user inactivity timer
*
* Results:
* none
*
* Side effects:
* The user inactivity timer of the underlaying windowing system is reset
* to zero.
*
*----------------------------------------------------------------------
*/
void
Tk_ResetUserInactiveTime(
Display *dpy)
{
XResetScreenSaver(dpy);
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
|
