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(svn r25692) -Add: Replacement of a part of the edit box text with a new string.

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This commit is contained in:
michi_cc
2013-08-05 20:37:57 +00:00
parent e34fe220e2
commit 164aba8732
6 changed files with 61 additions and 40 deletions
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81
src/textbuf.cpp
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@@ -153,13 +153,23 @@ bool Textbuf::InsertChar(WChar key)
* @param str String to insert.
* @param marked Replace the currently marked text with the new text.
* @param caret Move the caret to this point in the insertion string.
* @param insert_location Position at which to insert the string.
* @param replacement_end Replace all characters from #insert_location up to this location with the new string.
* @return True on successful change of Textbuf, or false otherwise.
*/
bool Textbuf::InsertString(const char *str, bool marked, const char *caret)
bool Textbuf::InsertString(const char *str, bool marked, const char *caret, const char *insert_location, const char *replacement_end)
{
uint16 insertpos = (marked && this->marklength != 0) ? this->markpos : this->caretpos;
if (insert_location != NULL) {
insertpos = insert_location - this->buf;
if (insertpos > this->bytes) return NULL;
if (marked) this->DiscardMarkedText(str == NULL);
if (replacement_end != NULL) {
this->DeleteText(insertpos, replacement_end - this->buf, str == NULL);
}
} else {
if (marked) this->DiscardMarkedText(str == NULL);
}
if (str == NULL) return false;
@@ -219,6 +229,42 @@ bool Textbuf::InsertClipboard()
return this->InsertString(utf8_buf, false);
}
/**
* Delete a part of the text.
* @param from Start of the text to delete.
* @param to End of the text to delete.
* @param update Set to true if the internal state should be updated.
*/
void Textbuf::DeleteText(uint16 from, uint16 to, bool update)
{
uint c = 0;
const char *s = this->buf + from;
while (s < this->buf + to) {
Utf8Consume(&s);
c++;
}
/* Strip marked characters from buffer. */
memmove(this->buf + from, this->buf + to, this->bytes - to);
this->bytes -= to - from;
this->chars -= c;
/* Fixup caret if needed. */
if (this->caretpos > from) {
if (this->caretpos <= to) {
this->caretpos = from;
} else {
this->caretpos -= to - from;
}
}
if (update) {
this->UpdateStringIter();
this->UpdateCaretPosition();
this->UpdateMarkedText();
}
}
/**
* Discard any marked text.
* @param update Set to true if the internal state should be updated.
@@ -227,35 +273,8 @@ void Textbuf::DiscardMarkedText(bool update)
{
if (this->markend == 0) return;
/* Count marked characters. */
uint c = 0;
const char *s = this->buf + this->markpos;
while (s < this->buf + this->markend) {
Utf8Consume(&s);
c++;
}
/* Strip marked characters from buffer. */
memmove(this->buf + this->markpos, this->buf + this->markend, this->bytes - this->markend);
this->bytes -= this->markend - this->markpos;
this->chars -= c;
/* Fixup caret if needed. */
if (this->caretpos > this->markpos) {
if (this->caretpos <= this->markend) {
this->caretpos = this->markpos;
} else {
this->caretpos -= this->markend - this->markpos;
}
}
this->markpos = this->markend = 0;
if (update) {
this->UpdateStringIter();
this->UpdateCaretPosition();
this->UpdateMarkedText();
}
this->DeleteText(this->markpos, this->markend, update);
this->markpos = this->markend = this->markxoffs = this->marklength = 0;
}
/** Update the character iter after the text has changed. */