1 /* 2 * $Id: mouse.c,v 1.25 2022/04/03 22:38:16 tom Exp $ 3 * 4 * mouse.c -- mouse support for dialog 5 * 6 * Copyright 2002-2017,2022 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 <dlg_internals.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 * 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 48 dlg_mouse_setbase(int x, int y) 49 { 50 basex = x; 51 basey = y; 52 } 53 54 void 55 dlg_mouse_setcode(int code) 56 { 57 basecode = code; 58 DLG_TRACE(("# mouse_setcode %d\n", code)); 59 } 60 61 void 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 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 * 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 * 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 * 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 * 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 159 mouse_dummy(void) 160 { 161 } 162 #endif /* USE_MOUSE */ 163