comparison: ui/motif/text.c
ui/motif/text.c
- changeset 9
- e70e855cea89
- parent 5
- 19d37cb9c96c
- child 12
- fe94e0fb9ef3
equal
deleted
inserted
replaced
| 8:84a541c6e093 | 9:e70e855cea89 |
|---|---|
| 50 if(value) { | 50 if(value) { |
| 51 value->get = ui_textarea_get; | 51 value->get = ui_textarea_get; |
| 52 value->set = ui_textarea_set; | 52 value->set = ui_textarea_set; |
| 53 value->value = NULL; | 53 value->value = NULL; |
| 54 value->obj = text_area; | 54 value->obj = text_area; |
| 55 | |
| 56 if(!value->undomgr) { | |
| 57 value->undomgr = ui_create_undomgr(); | |
| 58 } | |
| 59 | |
| 60 XtAddCallback( | |
| 61 text_area, | |
| 62 XmNmodifyVerifyCallback, | |
| 63 (XtCallbackProc)ui_text_modify_callback, | |
| 64 value); | |
| 55 } | 65 } |
| 56 | 66 |
| 57 return text_area; | 67 return text_area; |
| 58 } | 68 } |
| 59 | 69 |
| 72 text->value = NULL; | 82 text->value = NULL; |
| 73 } | 83 } |
| 74 text->value = NULL; | 84 text->value = NULL; |
| 75 XmTextSetString(text->obj, str); | 85 XmTextSetString(text->obj, str); |
| 76 } | 86 } |
| 87 | |
| 88 UiUndoMgr* ui_create_undomgr() { | |
| 89 UiUndoMgr *mgr = malloc(sizeof(UiUndoMgr)); | |
| 90 mgr->begin = NULL; | |
| 91 mgr->cur = NULL; | |
| 92 mgr->length = 0; | |
| 93 mgr->event = 1; | |
| 94 return mgr; | |
| 95 } | |
| 96 | |
| 97 void ui_text_modify_callback(Widget widget, UiText *value, XtPointer data) { | |
| 98 XmTextVerifyCallbackStruct *txv = (XmTextVerifyCallbackStruct*)data; | |
| 99 int type = txv->text->length > 0 ? UI_TEXTBUF_INSERT : UI_TEXTBUF_DELETE; | |
| 100 UiUndoMgr *mgr = value->undomgr; | |
| 101 if(!mgr->event) { | |
| 102 return; | |
| 103 } | |
| 104 | |
| 105 char *text = txv->text->ptr; | |
| 106 int length = txv->text->length; | |
| 107 | |
| 108 if(mgr->cur) { | |
| 109 UcxList *elm = mgr->cur->next; | |
| 110 if(elm) { | |
| 111 mgr->cur->next = NULL; | |
| 112 while(elm) { | |
| 113 elm->prev = NULL; | |
| 114 UcxList *next = elm->next; | |
| 115 ui_free_textbuf_op(elm->data); | |
| 116 free(elm); | |
| 117 elm = next; | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 if(type == UI_TEXTBUF_INSERT) { | |
| 122 UiTextBufOp *last_op = mgr->cur->data; | |
| 123 if( | |
| 124 last_op->type == UI_TEXTBUF_INSERT && | |
| 125 ui_check_insertstr(last_op->text, last_op->len, text, length) == 0) | |
| 126 { | |
| 127 // append text to last op | |
| 128 int ln = last_op->len; | |
| 129 char *newtext = malloc(ln + length + 1); | |
| 130 memcpy(newtext, last_op->text, ln); | |
| 131 memcpy(newtext+ln, text, length); | |
| 132 newtext[ln+length] = '\0'; | |
| 133 | |
| 134 last_op->text = newtext; | |
| 135 last_op->len = ln + length; | |
| 136 last_op->end += length; | |
| 137 | |
| 138 return; | |
| 139 } | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 char *str; | |
| 144 if(type == UI_TEXTBUF_INSERT) { | |
| 145 str = malloc(length + 1); | |
| 146 memcpy(str, text, length); | |
| 147 str[length] = 0; | |
| 148 } else { | |
| 149 length = txv->endPos - txv->startPos; | |
| 150 str = malloc(length + 1); | |
| 151 XmTextGetSubstring(value->obj, txv->startPos, length, length+1, str); | |
| 152 } | |
| 153 | |
| 154 UiTextBufOp *op = malloc(sizeof(UiTextBufOp)); | |
| 155 op->type = type; | |
| 156 op->start = txv->startPos; | |
| 157 op->end = txv->endPos + 1; | |
| 158 op->len = length; | |
| 159 op->text = str; | |
| 160 | |
| 161 UcxList *elm = ucx_list_append(NULL, op); | |
| 162 mgr->cur = elm; | |
| 163 mgr->begin = ucx_list_concat(mgr->begin, elm); | |
| 164 } | |
| 165 | |
| 166 int ui_check_insertstr(char *oldstr, int oldlen, char *newstr, int newlen) { | |
| 167 // return 1 if oldstr + newstr are one word | |
| 168 | |
| 169 int has_space = 0; | |
| 170 for(int i=0;i<oldlen;i++) { | |
| 171 if(oldstr[i] < 33) { | |
| 172 has_space = 1; | |
| 173 break; | |
| 174 } | |
| 175 } | |
| 176 | |
| 177 for(int i=0;i<newlen;i++) { | |
| 178 if(has_space && newstr[i] > 32) { | |
| 179 return 1; | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 return 0; | |
| 184 } | |
| 185 | |
| 186 void ui_free_textbuf_op(UiTextBufOp *op) { | |
| 187 if(op->text) { | |
| 188 free(op->text); | |
| 189 } | |
| 190 free(op); | |
| 191 } | |
| 192 | |
| 193 | |
| 194 void ui_text_undo(UiText *value) { | |
| 195 UiUndoMgr *mgr = value->undomgr; | |
| 196 | |
| 197 if(mgr->cur) { | |
| 198 UiTextBufOp *op = mgr->cur->data; | |
| 199 mgr->event = 0; | |
| 200 switch(op->type) { | |
| 201 case UI_TEXTBUF_INSERT: { | |
| 202 XmTextReplace(value->obj, op->start, op->end, ""); | |
| 203 break; | |
| 204 } | |
| 205 case UI_TEXTBUF_DELETE: { | |
| 206 XmTextInsert(value->obj, op->start, op->text); | |
| 207 break; | |
| 208 } | |
| 209 } | |
| 210 mgr->event = 1; | |
| 211 mgr->cur = mgr->cur->prev; | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 void ui_text_redo(UiText *value) { | |
| 216 UiUndoMgr *mgr = value->undomgr; | |
| 217 | |
| 218 UcxList *elm = NULL; | |
| 219 if(mgr->cur) { | |
| 220 if(mgr->cur->next) { | |
| 221 elm = mgr->cur->next; | |
| 222 } | |
| 223 } else if(mgr->begin) { | |
| 224 elm = mgr->begin; | |
| 225 } | |
| 226 | |
| 227 if(elm) { | |
| 228 UiTextBufOp *op = elm->data; | |
| 229 mgr->event = 0; | |
| 230 switch(op->type) { | |
| 231 case UI_TEXTBUF_INSERT: { | |
| 232 XmTextInsert(value->obj, op->start, op->text); | |
| 233 break; | |
| 234 } | |
| 235 case UI_TEXTBUF_DELETE: { | |
| 236 XmTextReplace(value->obj, op->start, op->end, ""); | |
| 237 break; | |
| 238 } | |
| 239 } | |
| 240 mgr->event = 1; | |
| 241 mgr->cur = elm; | |
| 242 } | |
| 243 } |
