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
|
/* Copyright (c) 2008, 2009
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Micah Cowan (micah@cowan.name)
* Sadrul Habib Chowdhury (sadrul@users.sourceforge.net)
* Copyright (c) 1993-2002, 2003, 2005, 2006, 2007
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Copyright (c) 1987 Oliver Laumann
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING); if not, see
* https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
****************************************************************
* $Id$ GNU
*/
#ifndef SCREEN_LAYER_H
#define SCREEN_LAYER_H
#include <stdbool.h>
#include <stdlib.h>
/*
* This is the overlay structure. It is used to create a seperate
* layer over the current windows.
*/
/* forward declarations */
struct mchar;
struct mline;
typedef struct Canvas Canvas;
struct LayFuncs {
void (*lf_LayProcess) (char **, size_t *);
void (*lf_LayAbort) (void);
void (*lf_LayRedisplayLine) (int, int, int, int);
void (*lf_LayClearLine) (int, int, int, int);
int (*lf_LayResize) (int, int);
void (*lf_LayRestore) (void);
void (*lf_LayFree) (void *); /* Should only free any data kept in
flayer->l_data (but not flayer->l_data itself). */
};
typedef struct Layer Layer;
struct Layer {
Canvas *l_cvlist; /* list of canvases displaying layer */
int l_width;
int l_height;
int l_x; /* cursor position */
int l_y;
int l_encoding;
const struct LayFuncs *l_layfn;
void *l_data;
Layer *l_next; /* layer stack, should be in data? */
Layer *l_bottom; /* bottom element of layer stack */
int l_blocking;
int l_mode; /* non-zero == edit mode */
struct {
unsigned char buffer[3]; /* [0]: the button
[1]: x
[2]: y
*/
size_t len;
bool start;
} l_mouseevent;
struct {
bool d; /* Is the output for the layer blocked? */
/* After unpausing, what region should we refresh? */
int *left, *right;
int top, bottom;
int lines;
} l_pause;
};
#define LayProcess (*flayer->l_layfn->lf_LayProcess)
#define LayAbort (*flayer->l_layfn->lf_LayAbort)
#define LayRedisplayLine (*flayer->l_layfn->lf_LayRedisplayLine)
#define LayClearLine (*flayer->l_layfn->lf_LayClearLine)
#define LayResize (*flayer->l_layfn->lf_LayResize)
#define LayRestore (*flayer->l_layfn->lf_LayRestore)
#define LayFree (*flayer->l_layfn->lf_LayFree)
#define LaySetCursor() LGotoPos(flayer, flayer->l_x, flayer->l_y)
#define LayCanResize(l) (l->l_layfn->LayResize != DefResize)
/* XXX: AArgh! think again! */
#define LAY_CALL_UP(fn) do \
{ \
Layer *oldlay = flayer; \
Canvas *oldcvlist, *cv; \
flayer = flayer->l_next; \
oldcvlist = flayer->l_cvlist; \
flayer->l_cvlist = oldlay->l_cvlist; \
for (cv = flayer->l_cvlist; cv; cv = cv->c_lnext) \
cv->c_layer = flayer; \
fn; \
flayer = oldlay; \
for (cv = flayer->l_cvlist; cv; cv = cv->c_lnext) \
cv->c_layer = flayer; \
flayer->l_next->l_cvlist = oldcvlist; \
} while(0)
#define LAY_DISPLAYS(l, fn) do \
{ \
Display *olddisplay = display; \
Canvas *cv; \
for (display = displays; display; display = display->d_next) \
{ \
for (cv = D_cvlist; cv; cv = cv->c_next) \
if (cv->c_layer == l) \
break; \
if (cv == NULL) \
continue; \
fn; \
} \
display = olddisplay; \
} while(0)
/**
* (Un)Pauses a layer.
*
* @param layer The layer that should be (un)paused.
* @param pause Should we pause the layer?
*/
void LayPause (Layer *layer, bool pause);
/**
* Update the region to refresh after a layer is unpaused.
*
* @param layer The layer.
* @param xs The left-end of the region.
* @param xe The right-end of the region.
* @param ys The top-end of the region.
* @param ye The bottom-end of the region.
*/
void LayPauseUpdateRegion (Layer *layer, int xs, int xe, int ys, int ye);
/**
* Free any internal memory for the layer.
*
* @param layer The layer.
*/
void LayerCleanupMemory (Layer *layer);
void LGotoPos (Layer *, int, int);
void LPutChar (Layer *, struct mchar *, int, int);
void LInsChar (Layer *, struct mchar *, int, int, struct mline *);
void LPutStr (Layer *, char *, int, struct mchar *, int, int);
void LPutWinMsg (Layer *, char *, int, struct mchar *, int, int);
void LScrollH (Layer *, int, int, int, int, int, struct mline *);
void LScrollV (Layer *, int, int, int, int);
void LClearAll (Layer *, int);
void LClearArea (Layer *, int, int, int, int, int, int);
void LClearLine (Layer *, int, int, int, int, struct mline *);
void LRefreshAll (Layer *, int);
void LCDisplayLine (Layer *, struct mline *, int, int, int, int);
void LCDisplayLineWrap (Layer *, struct mline *, int, int, int, int);
void LSetRendition (Layer *, struct mchar *);
void LWrapChar (Layer *, struct mchar *, int, int, int, bool);
void LCursorVisibility (Layer *, int);
void LSetFlow (Layer *, bool);
void LKeypadMode (Layer *, int);
void LCursorkeysMode (Layer *, int);
void LMouseMode (Layer *, int);
void LExtMouseMode (Layer *, int);
void LBracketedPasteMode (Layer *, bool);
void LCursorStyle (Layer *, int);
void LMsg (int, const char *, ...) __attribute__((format(printf, 2, 3)));
void KillLayerChain (Layer *);
int InitOverlayPage (int, const struct LayFuncs *, int);
void ExitOverlayPage (void);
int LayProcessMouse (Layer *, unsigned char);
void LayProcessMouseSwitch (Layer *, bool);
#endif /* SCREEN_LAYER_H */
|
