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Word wrap mouse offset

This commit is contained in:
James Johnson 2018-01-12 08:09:37 -05:00
parent d2caa2a1a7
commit 278ecc75eb
1 changed files with 45 additions and 3 deletions
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48
src/dlangui/widgets/editors.d
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@ -1434,10 +1434,52 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
_textToHighlightOptions = textToHighlightOptions;
invalidate();
}
protected TextPosition wordWrapMouseOffset(int x, int y)
{
if(_span.length == 0)
return clientToTextPos(Point(x,y));
int selectedVisibleLine = y / _lineHeight;
LineSpan _curSpan;
int wrapLine = 0;
int curLine = 0;
bool foundWrap = false;
int accumulativeWidths = 0;
int curWrapOfSpan = 0;
lineSpanIterate(delegate(LineSpan curSpan){
while (!foundWrap)
{
if (wrapLine == selectedVisibleLine)
{
foundWrap = true;
break;
}
accumulativeWidths += curSpan.wrapPoints[curWrapOfSpan].wrapWidth;
wrapLine++;
curWrapOfSpan++;
if (curWrapOfSpan >= curSpan.len)
{
break;
}
}
if (!foundWrap)
{
accumulativeWidths = 0;
curLine++;
}
curWrapOfSpan = 0;
});
int fakeLineHeight = curLine * _lineHeight;
return clientToTextPos(Point(x + accumulativeWidths,fakeLineHeight));
}
protected void selectWordByMouse(int x, int y) {
TextPosition oldCaretPos = _caretPos;
TextPosition newPos = clientToTextPos(Point(x,y));
TextPosition newPos = _wordWrap ? wordWrapMouseOffset(x,y) : clientToTextPos(Point(x,y));
TextRange r = content.wordBounds(newPos);
if (r.start < r.end) {
_selectionRange = r;
@ -1453,7 +1495,7 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
protected void selectLineByMouse(int x, int y, bool onSameLineOnly = true) {
TextPosition oldCaretPos = _caretPos;
TextPosition newPos = clientToTextPos(Point(x,y));
TextPosition newPos = _wordWrap ? wordWrapMouseOffset(x,y) : clientToTextPos(Point(x,y));
if (onSameLineOnly && newPos.line != oldCaretPos.line)
return; // different lines
TextRange r = content.lineRange(newPos.line);
@ -1471,7 +1513,7 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
protected void updateCaretPositionByMouse(int x, int y, bool selecting) {
TextPosition oldCaretPos = _caretPos;
TextPosition newPos = clientToTextPos(Point(x,y));
TextPosition newPos = _wordWrap ? wordWrapMouseOffset(x,y) : clientToTextPos(Point(x,y));
if (newPos != _caretPos) {
_caretPos = newPos;
updateSelectionAfterCursorMovement(oldCaretPos, selecting);