1 /*
2 * $Id: mouse.c,v 1.24 2017/01/31 00:27:21 tom Exp $
3 *
4 * mouse.c -- mouse support for dialog
5 *
6 * Copyright 2002-2016,2017 Thomas E. Dickey
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License, version 2.1
10 * as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this program; if not, write to
19 * Free Software Foundation, Inc.
20 * 51 Franklin St., Fifth Floor
21 * Boston, MA 02110, USA.
22 */
23
24 #include <dialog.h>
25 #include <dlg_keys.h>
26
27 #if USE_MOUSE
28
29 static int basex, basey, basecode;
30
31 static mseRegion *regionList = NULL;
32
33 /*=========== region related functions =============*/
34
35 static mseRegion *
find_region_by_code(int code)36 find_region_by_code(int code)
37 {
38 mseRegion *butPtr;
39
40 for (butPtr = regionList; butPtr; butPtr = butPtr->next) {
41 if (code == butPtr->code)
42 break;
43 }
44 return butPtr;
45 }
46
47 void
dlg_mouse_setbase(int x,int y)48 dlg_mouse_setbase(int x, int y)
49 {
50 basex = x;
51 basey = y;
52 }
53
54 void
dlg_mouse_setcode(int code)55 dlg_mouse_setcode(int code)
56 {
57 basecode = code;
58 DLG_TRACE(("# mouse_setcode %d\n", code));
59 }
60
61 void
dlg_mouse_mkbigregion(int y,int x,int height,int width,int code,int step_y,int step_x,int mode)62 dlg_mouse_mkbigregion(int y, int x,
63 int height, int width,
64 int code,
65 int step_y, int step_x,
66 int mode)
67 {
68 mseRegion *butPtr = dlg_mouse_mkregion(y, x, height, width, -DLGK_MOUSE(code));
69 butPtr->mode = mode;
70 butPtr->step_x = MAX(1, step_x);
71 butPtr->step_y = MAX(1, step_y);
72 }
73
74 void
dlg_mouse_free_regions(void)75 dlg_mouse_free_regions(void)
76 {
77 while (regionList != 0) {
78 mseRegion *butPtr = regionList->next;
79 free(regionList);
80 regionList = butPtr;
81 }
82 }
83
84 mseRegion *
dlg_mouse_mkregion(int y,int x,int height,int width,int code)85 dlg_mouse_mkregion(int y, int x, int height, int width, int code)
86 {
87 mseRegion *butPtr;
88
89 if ((butPtr = find_region_by_code(basecode + code)) == 0) {
90 butPtr = dlg_calloc(mseRegion, 1);
91 assert_ptr(butPtr, "dlg_mouse_mkregion");
92 butPtr->next = regionList;
93 regionList = butPtr;
94 }
95
96 if ((butPtr->mode != -1) ||
97 (butPtr->step_x != 0) ||
98 (butPtr->step_y != 0) ||
99 (butPtr->y != (basey + y)) ||
100 (butPtr->Y != (basey + y + height)) ||
101 (butPtr->x != (basex + x)) ||
102 (butPtr->X != (basex + x + width)) ||
103 (butPtr->code != basecode + code)) {
104 DLG_TRACE(("# mouse_mkregion %d,%d %dx%d %d (%d)\n",
105 y, x, height, width,
106 butPtr->code, code));
107 }
108
109 butPtr->mode = -1;
110 butPtr->step_x = 0;
111 butPtr->step_y = 0;
112 butPtr->y = basey + y;
113 butPtr->Y = basey + y + height;
114 butPtr->x = basex + x;
115 butPtr->X = basex + x + width;
116 butPtr->code = basecode + code;
117
118 return butPtr;
119 }
120
121 /* retrieve the frame under the pointer */
122 static mseRegion *
any_mouse_region(int y,int x,int small)123 any_mouse_region(int y, int x, int small)
124 {
125 mseRegion *butPtr;
126
127 for (butPtr = regionList; butPtr; butPtr = butPtr->next) {
128 if (small ^ (butPtr->code >= 0)) {
129 continue;
130 }
131 if (y < butPtr->y || y >= butPtr->Y) {
132 continue;
133 }
134 if (x < butPtr->x || x >= butPtr->X) {
135 continue;
136 }
137 break; /* found */
138 }
139 return butPtr;
140 }
141
142 /* retrieve the frame under the pointer */
143 mseRegion *
dlg_mouse_region(int y,int x)144 dlg_mouse_region(int y, int x)
145 {
146 return any_mouse_region(y, x, TRUE);
147 }
148
149 /* retrieve the bigframe under the pointer */
150 mseRegion *
dlg_mouse_bigregion(int y,int x)151 dlg_mouse_bigregion(int y, int x)
152 {
153 return any_mouse_region(y, x, FALSE);
154 }
155
156 #else
157 void mouse_dummy(void);
158 void
mouse_dummy(void)159 mouse_dummy(void)
160 {
161 }
162 #endif /* USE_MOUSE */
163