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comparison src/ui.c @ 31103:33ca088dbd3e v9.0.0886

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patch 9.0.0886: horizontal mouse scroll only works in the GUI Commit: https://github.com/vim/vim/commit/44c2209352d56d70b1fc0215e81f1822d55aa563 Author: Christopher Plewright <chris@createng.com> Date: Tue Nov 15 17:43:36 2022 +0000 patch 9.0.0886: horizontal mouse scroll only works in the GUI Problem: Horizontal mouse scroll only works in the GUI. Solution: Make horizontal mouse scroll also work in a terminal. (Christopher Plewright, closes #11448)
author Bram Moolenaar <Bram@vim.org>
date Tue, 15 Nov 2022 18:45:03 +0100
parents 71137f73c94d
children fa309d9af73c
comparison
equal deleted inserted replaced
31102:71da2abdd899 31103:33ca088dbd3e
1124 return screen_Rows - 1; 1124 return screen_Rows - 1;
1125 return row; 1125 return row;
1126 } 1126 }
1127 1127
1128 /* 1128 /*
1129 * Return length of line "lnum" in screen cells for horizontal scrolling.
1130 */
1131 long
1132 scroll_line_len(linenr_T lnum)
1133 {
1134 char_u *p = ml_get(lnum);
1135 colnr_T col = 0;
1136
1137 if (*p != NUL)
1138 for (;;)
1139 {
1140 int w = chartabsize(p, col);
1141 MB_PTR_ADV(p);
1142 if (*p == NUL) // don't count the last character
1143 break;
1144 col += w;
1145 }
1146 return col;
1147 }
1148
1149 /*
1150 * Find the longest visible line number. This is used for horizontal
1151 * scrolling. If this is not possible (or not desired, by setting 'h' in
1152 * "guioptions") then the current line number is returned.
1153 */
1154 linenr_T
1155 ui_find_longest_lnum(void)
1156 {
1157 linenr_T ret = 0;
1158
1159 // Calculate maximum for horizontal scrollbar. Check for reasonable
1160 // line numbers, topline and botline can be invalid when displaying is
1161 // postponed.
1162 if (
1163 # ifdef FEAT_GUI
1164 (!gui.in_use || vim_strchr(p_go, GO_HORSCROLL) == NULL) &&
1165 # endif
1166 curwin->w_topline <= curwin->w_cursor.lnum
1167 && curwin->w_botline > curwin->w_cursor.lnum
1168 && curwin->w_botline <= curbuf->b_ml.ml_line_count + 1)
1169 {
1170 linenr_T lnum;
1171 long n;
1172 long max = 0;
1173
1174 // Use maximum of all visible lines. Remember the lnum of the
1175 // longest line, closest to the cursor line. Used when scrolling
1176 // below.
1177 for (lnum = curwin->w_topline; lnum < curwin->w_botline; ++lnum)
1178 {
1179 n = scroll_line_len(lnum);
1180 if (n > max)
1181 {
1182 max = n;
1183 ret = lnum;
1184 }
1185 else if (n == max && abs((int)(lnum - curwin->w_cursor.lnum))
1186 < abs((int)(ret - curwin->w_cursor.lnum)))
1187 ret = lnum;
1188 }
1189 }
1190 else
1191 // Use cursor line only.
1192 ret = curwin->w_cursor.lnum;
1193
1194 return ret;
1195 }
1196
1197 /*
1129 * Called when focus changed. Used for the GUI or for systems where this can 1198 * Called when focus changed. Used for the GUI or for systems where this can
1130 * be done in the console (Win32). 1199 * be done in the console (Win32).
1131 */ 1200 */
1132 void 1201 void
1133 ui_focus_change( 1202 ui_focus_change(