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EnsureCaretVisible for word wrap

This commit is contained in:
James Johnson 2018-01-12 07:17:09 -05:00
parent 3463fec39d
commit d2caa2a1a7
1 changed files with 18 additions and 0 deletions
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18
src/dlangui/widgets/editors.d
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@ -1266,6 +1266,7 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
protected int _firstVisibleLine;
protected int caretHeightOffset;
/// returns cursor rectangle
protected Rect caretRect() {
Rect caretRc = textPosToClient(_caretPos);
@ -1291,6 +1292,7 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
xOffset = curSpan.accumulation(wrapLine, LineSpan.WrapPointInfo.Width);
}
auto yOffset = -1 * _lineHeight * (wrapsUpTo(_caretPos.line) + wrapLine);
caretHeightOffset = yOffset;
caretRc.offset(_clientRect.left - xOffset, _clientRect.top - yOffset);
}
else
@ -2743,6 +2745,22 @@ class EditBox : EditWidgetBase {
_firstVisibleLine = maxFirstVisibleLine;
measureVisibleText();
invalidate();
} else if(_wordWrap && !(_firstVisibleLine > maxFirstVisibleLine)) {
//For wordwrap mode, move down sooner
int offsetLines = -1 * caretHeightOffset / _lineHeight;
//Log.d("offsetLines: ", offsetLines);
if (_caretPos.line >= _firstVisibleLine + visibleLines - offsetLines)
{
_firstVisibleLine = _caretPos.line - visibleLines + 1 + offsetLines;
if (center)
_firstVisibleLine += visibleLines / 2;
if (_firstVisibleLine > maxFirstVisibleLine)
_firstVisibleLine = maxFirstVisibleLine;
if (_firstVisibleLine < 0)
_firstVisibleLine = 0;
measureVisibleText();
invalidate();
}
} else if (_caretPos.line >= _firstVisibleLine + visibleLines) {
_firstVisibleLine = _caretPos.line - visibleLines + 1;
if (center)