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log widget fixes

This commit is contained in:
Vadim Lopatin 2015-03-10 14:42:09 +03:00
parent a740aa0f0c
commit bfd5f48589
1 changed files with 46 additions and 1 deletions
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47
src/dlangui/widgets/editors.d
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@ -1845,6 +1845,7 @@ class EditBox : EditWidgetBase {
return true;
}
protected bool _enableScrollAfterText = true;
override protected void ensureCaretVisible() {
if (_caretPos.line >= _content.length)
_caretPos.line = _content.length - 1;
@ -1853,12 +1854,28 @@ class EditBox : EditWidgetBase {
int visibleLines = _lineHeight > 0 ? _clientRect.height / _lineHeight : 1; // fully visible lines
if (visibleLines < 1)
visibleLines = 1;
int maxFirstVisibleLine = _content.length - 1;
if (!_enableScrollAfterText)
maxFirstVisibleLine = _content.length - visibleLines;
if (maxFirstVisibleLine < 0)
maxFirstVisibleLine = 0;
if (_caretPos.line < _firstVisibleLine) {
_firstVisibleLine = _caretPos.line;
if (_firstVisibleLine > maxFirstVisibleLine)
_firstVisibleLine = maxFirstVisibleLine;
measureVisibleText();
invalidate();
} else if (_caretPos.line >= _firstVisibleLine + visibleLines) {
_firstVisibleLine = _caretPos.line - visibleLines + 1;
if (_firstVisibleLine > maxFirstVisibleLine)
_firstVisibleLine = maxFirstVisibleLine;
if (_firstVisibleLine < 0)
_firstVisibleLine = 0;
measureVisibleText();
invalidate();
} else if (_firstVisibleLine > maxFirstVisibleLine) {
_firstVisibleLine = maxFirstVisibleLine;
if (_firstVisibleLine < 0)
_firstVisibleLine = 0;
measureVisibleText();
@ -2352,12 +2369,14 @@ class LogWidget : EditBox {
this(string ID) {
super(ID);
_scrollLock = true;
_enableScrollAfterText = false;
enabled = false;
fontSize = 14;
//fontFace = "Consolas,Lucida Console,Courier New";
fontFace = "Consolas,DejaVuSansMono,Lucida Sans Typewriter,Courier New,Lucida Console";
fontFamily = FontFamily.MonoSpace;
minFontSize(8).maxFontSize(32); // allow font zoom with Ctrl + MouseWheel
onThemeChanged();
}
/// append lines to the end of text
void appendText(dstring text) {
@ -2371,11 +2390,37 @@ class LogWidget : EditBox {
range.end.line = lineCount - _maxLines;
EditOperation op = new EditOperation(EditAction.Replace, range, [""d]);
_content.performOperation(op, this);
_contentChanged = true;
}
updateScrollBars();
if (_scrollLock) {
_caretPos = TextPosition(lineCount > 0 ? lineCount - 1 : 0, 0);
_caretPos = lastLineBegin();
ensureCaretVisible();
}
}
TextPosition lastLineBegin() {
TextPosition res;
if (_content.length == 0)
return res;
if (_content.lineLength(_content.length - 1) == 0 && _content.length > 1)
res.line = _content.length - 2;
else
res.line = _content.length - 1;
return res;
}
/// Set widget rectangle to specified value and layout widget contents. (Step 2 of two phase layout).
override void layout(Rect rc) {
if (visibility == Visibility.Gone) {
return;
}
super.layout(rc);
if (_scrollLock) {
measureVisibleText();
_caretPos = lastLineBegin();
ensureCaretVisible();
}
}
}