本文整理汇总了C++中Fl_Text_Buffer::text_range方法的典型用法代码示例。如果您正苦于以下问题：C++ Fl_Text_Buffer::text_range方法的具体用法？C++ Fl_Text_Buffer::text_range怎么用？C++ Fl_Text_Buffer::text_range使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Fl_Text_Buffer的用法示例。
在下文中一共展示了Fl_Text_Buffer::text_range方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: free
static void
style_update(int pos, // I - Position of update
int nInserted, // I - Number of inserted chars
int nDeleted, // I - Number of deleted chars
int /*nRestyled*/, // I - Number of restyled chars
const char * /*deletedText*/,// I - Text that was deleted
void *cbArg) { // I - Callback data
int start, // Start of text
end; // End of text
char last, // Last style on line
*style, // Style data
*text; // Text data
SchemeEditor *editor = (SchemeEditor*)cbArg;
Fl_Text_Buffer *textbuf = editor->buffer();
Fl_Text_Buffer *stylebuf = editor->style_buffer();
// If this is just a selection change, just unselect the style buffer...
if (nInserted == 0 && nDeleted == 0) {
stylebuf->unselect();
return;
}
// Track changes in the text buffer...
if (nInserted > 0) {
// Insert characters into the style buffer...
style = new char[nInserted + 1];
memset(style, 'A', nInserted);
style[nInserted] = '\0';
stylebuf->replace(pos, pos + nDeleted, style);
delete[] style;
} else {
// Just delete characters in the style buffer...
stylebuf->remove(pos, pos + nDeleted);
}
// Select the area that was just updated to avoid unnecessary
// callbacks...
stylebuf->select(pos, pos + nInserted - nDeleted);
// Re-parse the changed region; we do this by parsing from the
// beginning of the previous line of the changed region to the end of
// the line of the changed region... Then we check the last
// style character and keep updating if we have a multi-line
// comment character...
start = textbuf->line_start(pos);
// if (start > 0) start = textbuf->line_start(start - 1);
end = textbuf->line_end(pos + nInserted);
text = textbuf->text_range(start, end);
style = stylebuf->text_range(start, end);
if (start==end)
last = 0;
else
last = style[end - start - 1];
// printf("start = %d, end = %d, text = \"%s\", style = \"%s\", last='%c'...\n",
// start, end, text, style, last);
style_parse(text, style, end - start);
// printf("new style = \"%s\", new last='%c'...\n",
// style, style[end - start - 1]);
stylebuf->replace(start, end, style);
editor->redisplay_range(start, end);
if (start==end || last != style[end - start - 1]) {
// printf("Recalculate the rest of the buffer style\n");
// Either the user deleted some text, or the last character
// on the line changed styles, so reparse the
// remainder of the buffer...
free(text);
free(style);
end = textbuf->length();
text = textbuf->text_range(start, end);
style = stylebuf->text_range(start, end);
style_parse(text, style, end - start);
stylebuf->replace(start, end, style);
editor->redisplay_range(start, end);
}
free(text);
free(style);
}