737 lines
30 KiB
C#
737 lines
30 KiB
C#
|
// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
|
||
|
|
//
|
||
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
|
||
|
|
// software and associated documentation files (the "Software"), to deal in the Software
|
||
|
|
// without restriction, including without limitation the rights to use, copy, modify, merge,
|
||
|
|
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
|
||
|
|
// to whom the Software is furnished to do so, subject to the following conditions:
|
||
|
|
//
|
||
|
|
// The above copyright notice and this permission notice shall be included in all copies or
|
||
|
|
// substantial portions of the Software.
|
||
|
|
//
|
||
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
||
|
|
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
||
|
|
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
|
||
|
|
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
||
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||
|
|
// DEALINGS IN THE SOFTWARE.
|
||
|
|
|
||
|
|
using System;
|
||
|
|
using System.ComponentModel;
|
||
|
|
using System.Linq;
|
||
|
|
using Unity.CodeEditor.Document;
|
||
|
|
using Unity.CodeEditor.Utils;
|
||
|
|
using UnityEngine;
|
||
|
|
using UnityEngine.UIElements;
|
||
|
|
|
||
|
|
namespace Unity.CodeEditor.Editing
|
||
|
|
{
|
||
|
|
/// <summary>
|
||
|
|
/// Handles selection of text using the mouse.
|
||
|
|
/// </summary>
|
||
|
|
internal sealed class SelectionMouseHandler //: ITextAreaInputHandler
|
||
|
|
{
|
||
|
|
#region enum SelectionMode
|
||
|
|
|
||
|
|
private enum SelectionMode
|
||
|
|
{
|
||
|
|
/// <summary>
|
||
|
|
/// no selection (no mouse button down)
|
||
|
|
/// </summary>
|
||
|
|
None,
|
||
|
|
/// <summary>
|
||
|
|
/// left mouse button down on selection, might be normal click
|
||
|
|
/// or might be drag'n'drop
|
||
|
|
/// </summary>
|
||
|
|
PossibleDragStart,
|
||
|
|
/// <summary>
|
||
|
|
/// dragging text
|
||
|
|
/// </summary>
|
||
|
|
Drag,
|
||
|
|
/// <summary>
|
||
|
|
/// normal selection (click+drag)
|
||
|
|
/// </summary>
|
||
|
|
Normal,
|
||
|
|
/// <summary>
|
||
|
|
/// whole-word selection (double click+drag or ctrl+click+drag)
|
||
|
|
/// </summary>
|
||
|
|
WholeWord,
|
||
|
|
/// <summary>
|
||
|
|
/// whole-line selection (triple click+drag)
|
||
|
|
/// </summary>
|
||
|
|
WholeLine,
|
||
|
|
/// <summary>
|
||
|
|
/// rectangular selection (alt+click+drag)
|
||
|
|
/// </summary>
|
||
|
|
Rectangular
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
private SelectionMode _mode;
|
||
|
|
private AnchorSegment _startWord;
|
||
|
|
private Vector2 _possibleDragStartMousePos;
|
||
|
|
private int _consecutiveClicks;
|
||
|
|
private float _lastClickTime;
|
||
|
|
private Vector2 _lastClickPosition;
|
||
|
|
|
||
|
|
#region Constructor + Attach + Detach
|
||
|
|
internal SelectionMouseHandler(TextArea textArea)
|
||
|
|
{
|
||
|
|
TextArea = textArea ?? throw new ArgumentNullException(nameof(textArea));
|
||
|
|
}
|
||
|
|
|
||
|
|
internal TextArea TextArea { get; }
|
||
|
|
|
||
|
|
internal void Attach()
|
||
|
|
{
|
||
|
|
//TextArea.PointerPressed += TextArea_MouseLeftButtonDown;
|
||
|
|
//TextArea.PointerMoved += TextArea_MouseMove;
|
||
|
|
//TextArea.PointerReleased += TextArea_MouseLeftButtonUp;
|
||
|
|
//textArea.QueryCursor += textArea_QueryCursor;
|
||
|
|
TextArea.OptionChanged += TextArea_OptionChanged;
|
||
|
|
|
||
|
|
_enableTextDragDrop = TextArea.Options.EnableTextDragDrop;
|
||
|
|
if (_enableTextDragDrop)
|
||
|
|
{
|
||
|
|
AttachDragDrop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void Detach()
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.None;
|
||
|
|
//TextArea.PointerPressed -= TextArea_MouseLeftButtonDown;
|
||
|
|
//TextArea.PointerMoved -= TextArea_MouseMove;
|
||
|
|
//TextArea.PointerReleased -= TextArea_MouseLeftButtonUp;
|
||
|
|
//textArea.QueryCursor -= textArea_QueryCursor;
|
||
|
|
TextArea.OptionChanged -= TextArea_OptionChanged;
|
||
|
|
if (_enableTextDragDrop)
|
||
|
|
{
|
||
|
|
DetachDragDrop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void AttachDragDrop()
|
||
|
|
{
|
||
|
|
//textArea.AllowDrop = true;
|
||
|
|
//textArea.GiveFeedback += textArea_GiveFeedback;
|
||
|
|
//textArea.QueryContinueDrag += textArea_QueryContinueDrag;
|
||
|
|
//textArea.DragEnter += textArea_DragEnter;
|
||
|
|
//textArea.DragOver += textArea_DragOver;
|
||
|
|
//textArea.DragLeave += textArea_DragLeave;
|
||
|
|
//textArea.Drop += textArea_Drop;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void DetachDragDrop()
|
||
|
|
{
|
||
|
|
//textArea.AllowDrop = false;
|
||
|
|
//textArea.GiveFeedback -= textArea_GiveFeedback;
|
||
|
|
//textArea.QueryContinueDrag -= textArea_QueryContinueDrag;
|
||
|
|
//textArea.DragEnter -= textArea_DragEnter;
|
||
|
|
//textArea.DragOver -= textArea_DragOver;
|
||
|
|
//textArea.DragLeave -= textArea_DragLeave;
|
||
|
|
//textArea.Drop -= textArea_Drop;
|
||
|
|
}
|
||
|
|
|
||
|
|
private bool _enableTextDragDrop;
|
||
|
|
|
||
|
|
private void TextArea_OptionChanged(object sender, PropertyChangedEventArgs e)
|
||
|
|
{
|
||
|
|
var newEnableTextDragDrop = TextArea.Options.EnableTextDragDrop;
|
||
|
|
if (newEnableTextDragDrop != _enableTextDragDrop)
|
||
|
|
{
|
||
|
|
_enableTextDragDrop = newEnableTextDragDrop;
|
||
|
|
if (newEnableTextDragDrop)
|
||
|
|
AttachDragDrop();
|
||
|
|
else
|
||
|
|
DetachDragDrop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region Dropping text
|
||
|
|
//[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")]
|
||
|
|
//void textArea_DragEnter(object sender, DragEventArgs e)
|
||
|
|
//{
|
||
|
|
// try {
|
||
|
|
// e.Effects = GetEffect(e);
|
||
|
|
// textArea.Caret.Show();
|
||
|
|
// } catch (Exception ex) {
|
||
|
|
// OnDragException(ex);
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
|
||
|
|
//[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")]
|
||
|
|
//void textArea_DragOver(object sender, DragEventArgs e)
|
||
|
|
//{
|
||
|
|
// try {
|
||
|
|
// e.Effects = GetEffect(e);
|
||
|
|
// } catch (Exception ex) {
|
||
|
|
// OnDragException(ex);
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
|
||
|
|
//DragDropEffects GetEffect(DragEventArgs e)
|
||
|
|
//{
|
||
|
|
// if (e.Data.GetDataPresent(DataFormats.UnicodeText, true)) {
|
||
|
|
// e.Handled = true;
|
||
|
|
// int visualColumn;
|
||
|
|
// bool isAtEndOfLine;
|
||
|
|
// int offset = GetOffsetFromMousePosition(e.GetPosition(textArea.TextView), out visualColumn, out isAtEndOfLine);
|
||
|
|
// if (offset >= 0) {
|
||
|
|
// textArea.Caret.Position = new TextViewPosition(textArea.Document.GetLocation(offset), visualColumn) { IsAtEndOfLine = isAtEndOfLine };
|
||
|
|
// textArea.Caret.DesiredXPos = double.NaN;
|
||
|
|
// if (textArea.ReadOnlySectionProvider.CanInsert(offset)) {
|
||
|
|
// if ((e.AllowedEffects & DragDropEffects.Move) == DragDropEffects.Move
|
||
|
|
// && (e.KeyStates & DragDropKeyStates.ControlKey) != DragDropKeyStates.ControlKey)
|
||
|
|
// {
|
||
|
|
// return DragDropEffects.Move;
|
||
|
|
// } else {
|
||
|
|
// return e.AllowedEffects & DragDropEffects.Copy;
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
// return DragDropEffects.None;
|
||
|
|
//}
|
||
|
|
|
||
|
|
//[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")]
|
||
|
|
//void textArea_DragLeave(object sender, DragEventArgs e)
|
||
|
|
//{
|
||
|
|
// try {
|
||
|
|
// e.Handled = true;
|
||
|
|
// if (!textArea.IsKeyboardFocusWithin)
|
||
|
|
// textArea.Caret.Hide();
|
||
|
|
// } catch (Exception ex) {
|
||
|
|
// OnDragException(ex);
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
|
||
|
|
//[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")]
|
||
|
|
//void textArea_Drop(object sender, DragEventArgs e)
|
||
|
|
//{
|
||
|
|
// try {
|
||
|
|
// DragDropEffects effect = GetEffect(e);
|
||
|
|
// e.Effects = effect;
|
||
|
|
// if (effect != DragDropEffects.None) {
|
||
|
|
// int start = textArea.Caret.Offset;
|
||
|
|
// if (mode == SelectionMode.Drag && textArea.Selection.Contains(start)) {
|
||
|
|
// Debug.WriteLine("Drop: did not drop: drop target is inside selection");
|
||
|
|
// e.Effects = DragDropEffects.None;
|
||
|
|
// } else {
|
||
|
|
// Debug.WriteLine("Drop: insert at " + start);
|
||
|
|
|
||
|
|
// var pastingEventArgs = new DataObjectPastingEventArgs(e.Data, true, DataFormats.UnicodeText);
|
||
|
|
// textArea.RaiseEvent(pastingEventArgs);
|
||
|
|
// if (pastingEventArgs.CommandCancelled)
|
||
|
|
// return;
|
||
|
|
|
||
|
|
// string text = EditingCommandHandler.GetTextToPaste(pastingEventArgs, textArea);
|
||
|
|
// if (text == null)
|
||
|
|
// return;
|
||
|
|
// bool rectangular = pastingEventArgs.DataObject.GetDataPresent(RectangleSelection.RectangularSelectionDataType);
|
||
|
|
|
||
|
|
// // Mark the undo group with the currentDragDescriptor, if the drag
|
||
|
|
// // is originating from the same control. This allows combining
|
||
|
|
// // the undo groups when text is moved.
|
||
|
|
// textArea.Document.UndoStack.StartUndoGroup(this.currentDragDescriptor);
|
||
|
|
// try {
|
||
|
|
// if (rectangular && RectangleSelection.PerformRectangularPaste(textArea, textArea.Caret.Position, text, true)) {
|
||
|
|
|
||
|
|
// } else {
|
||
|
|
// textArea.Document.Insert(start, text);
|
||
|
|
// textArea.Selection = Selection.Create(textArea, start, start + text.Length);
|
||
|
|
// }
|
||
|
|
// } finally {
|
||
|
|
// textArea.Document.UndoStack.EndUndoGroup();
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
// e.Handled = true;
|
||
|
|
// }
|
||
|
|
// } catch (Exception ex) {
|
||
|
|
// OnDragException(ex);
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
|
||
|
|
//void OnDragException(Exception ex)
|
||
|
|
//{
|
||
|
|
// // swallows exceptions during drag'n'drop or reports them incorrectly, so
|
||
|
|
// // we re-throw them later to allow the application's unhandled exception handler
|
||
|
|
// // to catch them
|
||
|
|
// textArea.Dispatcher.BeginInvoke(
|
||
|
|
// DispatcherPriority.Send,
|
||
|
|
// new Action(delegate {
|
||
|
|
// throw new DragDropException("Exception during drag'n'drop", ex);
|
||
|
|
// }));
|
||
|
|
//}
|
||
|
|
|
||
|
|
//[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")]
|
||
|
|
//void textArea_GiveFeedback(object sender, GiveFeedbackEventArgs e)
|
||
|
|
//{
|
||
|
|
// try {
|
||
|
|
// e.UseDefaultCursors = true;
|
||
|
|
// e.Handled = true;
|
||
|
|
// } catch (Exception ex) {
|
||
|
|
// OnDragException(ex);
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
|
||
|
|
//[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")]
|
||
|
|
//void textArea_QueryContinueDrag(object sender, QueryContinueDragEventArgs e)
|
||
|
|
//{
|
||
|
|
// try {
|
||
|
|
// if (e.EscapePressed) {
|
||
|
|
// e.Action = DragAction.Cancel;
|
||
|
|
// } else if ((e.KeyStates & DragDropKeyStates.LeftMouseButton) != DragDropKeyStates.LeftMouseButton) {
|
||
|
|
// e.Action = DragAction.Drop;
|
||
|
|
// } else {
|
||
|
|
// e.Action = DragAction.Continue;
|
||
|
|
// }
|
||
|
|
// e.Handled = true;
|
||
|
|
// } catch (Exception ex) {
|
||
|
|
// OnDragException(ex);
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region Start Drag
|
||
|
|
//object currentDragDescriptor;
|
||
|
|
|
||
|
|
//void StartDrag()
|
||
|
|
//{
|
||
|
|
// // prevent nested StartDrag calls
|
||
|
|
// mode = SelectionMode.Drag;
|
||
|
|
|
||
|
|
// // mouse capture and Drag'n'Drop doesn't mix
|
||
|
|
// textArea.ReleaseMouseCapture();
|
||
|
|
|
||
|
|
// DataObject dataObject = textArea.Selection.CreateDataObject(textArea);
|
||
|
|
|
||
|
|
// DragDropEffects allowedEffects = DragDropEffects.All;
|
||
|
|
// var deleteOnMove = textArea.Selection.Segments.Select(s => new AnchorSegment(textArea.Document, s)).ToList();
|
||
|
|
// foreach (ISegment s in deleteOnMove) {
|
||
|
|
// ISegment[] result = textArea.GetDeletableSegments(s);
|
||
|
|
// if (result.Length != 1 || result[0].Offset != s.Offset || result[0].EndOffset != s.EndOffset) {
|
||
|
|
// allowedEffects &= ~DragDropEffects.Move;
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
|
||
|
|
// var copyingEventArgs = new DataObjectCopyingEventArgs(dataObject, true);
|
||
|
|
// textArea.RaiseEvent(copyingEventArgs);
|
||
|
|
// if (copyingEventArgs.CommandCancelled)
|
||
|
|
// return;
|
||
|
|
|
||
|
|
// object dragDescriptor = new object();
|
||
|
|
// this.currentDragDescriptor = dragDescriptor;
|
||
|
|
|
||
|
|
// DragDropEffects resultEffect;
|
||
|
|
// using (textArea.AllowCaretOutsideSelection()) {
|
||
|
|
// var oldCaretPosition = textArea.Caret.Position;
|
||
|
|
// try {
|
||
|
|
// Debug.WriteLine("DoDragDrop with allowedEffects=" + allowedEffects);
|
||
|
|
// resultEffect = DragDrop.DoDragDrop(textArea, dataObject, allowedEffects);
|
||
|
|
// Debug.WriteLine("DoDragDrop done, resultEffect=" + resultEffect);
|
||
|
|
// } catch (COMException ex) {
|
||
|
|
// // ignore COM errors - don't crash on badly implemented drop targets
|
||
|
|
// Debug.WriteLine("DoDragDrop failed: " + ex.ToString());
|
||
|
|
// return;
|
||
|
|
// }
|
||
|
|
// if (resultEffect == DragDropEffects.None) {
|
||
|
|
// // reset caret if drag was aborted
|
||
|
|
// textArea.Caret.Position = oldCaretPosition;
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
|
||
|
|
// this.currentDragDescriptor = null;
|
||
|
|
|
||
|
|
// if (deleteOnMove != null && resultEffect == DragDropEffects.Move && (allowedEffects & DragDropEffects.Move) == DragDropEffects.Move) {
|
||
|
|
// bool draggedInsideSingleDocument = (dragDescriptor == textArea.Document.UndoStack.LastGroupDescriptor);
|
||
|
|
// if (draggedInsideSingleDocument)
|
||
|
|
// textArea.Document.UndoStack.StartContinuedUndoGroup(null);
|
||
|
|
// textArea.Document.BeginUpdate();
|
||
|
|
// try {
|
||
|
|
// foreach (ISegment s in deleteOnMove) {
|
||
|
|
// textArea.Document.Remove(s.Offset, s.Length);
|
||
|
|
// }
|
||
|
|
// } finally {
|
||
|
|
// textArea.Document.EndUpdate();
|
||
|
|
// if (draggedInsideSingleDocument)
|
||
|
|
// textArea.Document.UndoStack.EndUndoGroup();
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region QueryCursor
|
||
|
|
// provide the IBeam Cursor for the text area
|
||
|
|
//void textArea_QueryCursor(object sender, QueryCursorEventArgs e)
|
||
|
|
//{
|
||
|
|
// if (!e.Handled) {
|
||
|
|
// if (mode != SelectionMode.None) {
|
||
|
|
// // during selection, use IBeam cursor even outside the text area
|
||
|
|
// e.Cursor = Cursors.IBeam;
|
||
|
|
// e.Handled = true;
|
||
|
|
// } else if (textArea.TextView.VisualLinesValid) {
|
||
|
|
// // Only query the cursor if the visual lines are valid.
|
||
|
|
// // If they are invalid, the cursor will get re-queried when the visual lines
|
||
|
|
// // get refreshed.
|
||
|
|
// Point p = e.GetPosition(textArea.TextView);
|
||
|
|
// if (p.X >= 0 && p.Y >= 0 && p.X <= textArea.TextView.ActualWidth && p.Y <= textArea.TextView.ActualHeight) {
|
||
|
|
// int visualColumn;
|
||
|
|
// bool isAtEndOfLine;
|
||
|
|
// int offset = GetOffsetFromMousePosition(e, out visualColumn, out isAtEndOfLine);
|
||
|
|
// if (enableTextDragDrop && textArea.Selection.Contains(offset))
|
||
|
|
// e.Cursor = Cursors.Arrow;
|
||
|
|
// else
|
||
|
|
// e.Cursor = Cursors.IBeam;
|
||
|
|
// e.Handled = true;
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region LeftButtonDown
|
||
|
|
|
||
|
|
internal void OnPointerPressed(PointerDownEvent e)
|
||
|
|
{
|
||
|
|
Vector2 mousePoint = GetTextViewRelativePosition(e);
|
||
|
|
|
||
|
|
if (e.button != 0)
|
||
|
|
{
|
||
|
|
if (TextArea.RightClickMovesCaret == true)
|
||
|
|
{
|
||
|
|
SetCaretOffsetToMousePosition(mousePoint);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
int clickCount = ComputeClickCount(e);
|
||
|
|
_mode = SelectionMode.None;
|
||
|
|
bool isShift = (e.modifiers & EventModifiers.Shift) != 0;
|
||
|
|
bool isAlt = (e.modifiers & EventModifiers.Alt) != 0;
|
||
|
|
bool isCtrl = (e.modifiers & EventModifiers.Control) != 0
|
||
|
|
|| (e.modifiers & EventModifiers.Command) != 0;
|
||
|
|
|
||
|
|
if (_enableTextDragDrop && clickCount == 1 && !isShift)
|
||
|
|
{
|
||
|
|
var offset = GetOffsetFromMousePosition(mousePoint, out _, out _);
|
||
|
|
if (TextArea.Selection.Contains(offset))
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.PossibleDragStart;
|
||
|
|
_possibleDragStartMousePos = mousePoint;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var oldPosition = TextArea.Caret.Position;
|
||
|
|
SetCaretOffsetToMousePosition(mousePoint);
|
||
|
|
|
||
|
|
if (!isShift)
|
||
|
|
{
|
||
|
|
TextArea.ClearSelection();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isAlt && TextArea.Options.EnableRectangularSelection)
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.Rectangular;
|
||
|
|
if (isShift && TextArea.Selection is RectangleSelection)
|
||
|
|
{
|
||
|
|
TextArea.Selection = TextArea.Selection.StartSelectionOrSetEndpoint(oldPosition, TextArea.Caret.Position);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (isCtrl && clickCount == 1)
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.WholeWord;
|
||
|
|
if (isShift && !(TextArea.Selection is RectangleSelection))
|
||
|
|
{
|
||
|
|
TextArea.Selection = TextArea.Selection.StartSelectionOrSetEndpoint(oldPosition, TextArea.Caret.Position);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (e.button == 0 && clickCount == 1)
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.Normal;
|
||
|
|
if (isShift && !(TextArea.Selection is RectangleSelection))
|
||
|
|
{
|
||
|
|
TextArea.Selection = TextArea.Selection.StartSelectionOrSetEndpoint(oldPosition, TextArea.Caret.Position);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
SimpleSegment startWord;
|
||
|
|
if (clickCount == 3)
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.WholeLine;
|
||
|
|
startWord = GetLineAtMousePosition(mousePoint);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.WholeWord;
|
||
|
|
startWord = GetWordAtMousePosition(mousePoint);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (startWord == SimpleSegment.Invalid)
|
||
|
|
{
|
||
|
|
_mode = SelectionMode.None;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (isShift && !TextArea.Selection.IsEmpty)
|
||
|
|
{
|
||
|
|
if (startWord.Offset < TextArea.Selection.SurroundingSegment.Offset)
|
||
|
|
{
|
||
|
|
TextArea.Selection = TextArea.Selection.SetEndpoint(new TextViewPosition(TextArea.Document.GetLocation(startWord.Offset)));
|
||
|
|
}
|
||
|
|
else if (startWord.EndOffset > TextArea.Selection.SurroundingSegment.EndOffset)
|
||
|
|
{
|
||
|
|
TextArea.Selection = TextArea.Selection.SetEndpoint(new TextViewPosition(TextArea.Document.GetLocation(startWord.EndOffset)));
|
||
|
|
}
|
||
|
|
_startWord = new AnchorSegment(TextArea.Document, TextArea.Selection.SurroundingSegment);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
TextArea.Selection = Selection.Create(TextArea, startWord.Offset, startWord.EndOffset);
|
||
|
|
_startWord = new AnchorSegment(TextArea.Document, startWord.Offset, startWord.Length);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private int ComputeClickCount(PointerDownEvent e)
|
||
|
|
{
|
||
|
|
float currentTime = Time.realtimeSinceStartup;
|
||
|
|
Vector2 currentPosition = e.position;
|
||
|
|
|
||
|
|
if (currentTime - _lastClickTime < TripleClickTimeSeconds
|
||
|
|
&& Vector2.Distance(currentPosition, _lastClickPosition) < TripleClickMaxDistance)
|
||
|
|
{
|
||
|
|
_consecutiveClicks++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
_consecutiveClicks = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
_lastClickTime = currentTime;
|
||
|
|
_lastClickPosition = currentPosition;
|
||
|
|
|
||
|
|
return _consecutiveClicks;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region LeftButtonClick
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region LeftButtonDoubleTap
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region Mouse Position <-> Text coordinates
|
||
|
|
|
||
|
|
private Vector2 GetTextViewRelativePosition(IPointerEvent e)
|
||
|
|
{
|
||
|
|
return TextArea.TextView.WorldToLocal(e.position);
|
||
|
|
}
|
||
|
|
|
||
|
|
private SimpleSegment GetWordAtMousePosition(Vector2 posRelativeToTextView)
|
||
|
|
{
|
||
|
|
var textView = TextArea.TextView;
|
||
|
|
if (textView == null) return SimpleSegment.Invalid;
|
||
|
|
var pos = posRelativeToTextView;
|
||
|
|
if (pos.y < 0)
|
||
|
|
pos.y = 0;
|
||
|
|
if (pos.y > textView.Bounds.height)
|
||
|
|
pos.y = textView.Bounds.height;
|
||
|
|
pos += textView.ScrollOffset;
|
||
|
|
var line = textView.GetVisualLineFromVisualTop(pos.y);
|
||
|
|
if (line != null && line.TextLines != null)
|
||
|
|
{
|
||
|
|
var visualColumn = line.GetVisualColumn(pos, TextArea.Selection.EnableVirtualSpace);
|
||
|
|
var wordStartVc = line.GetNextCaretPosition(visualColumn + 1, LogicalDirection.Backward, CaretPositioningMode.WordStartOrSymbol, TextArea.Selection.EnableVirtualSpace);
|
||
|
|
if (wordStartVc == -1)
|
||
|
|
wordStartVc = 0;
|
||
|
|
var wordEndVc = line.GetNextCaretPosition(wordStartVc, LogicalDirection.Forward, CaretPositioningMode.WordBorderOrSymbol, TextArea.Selection.EnableVirtualSpace);
|
||
|
|
if (wordEndVc == -1)
|
||
|
|
wordEndVc = line.VisualLength;
|
||
|
|
var relOffset = line.FirstDocumentLine.Offset;
|
||
|
|
var wordStartOffset = line.GetRelativeOffset(wordStartVc) + relOffset;
|
||
|
|
var wordEndOffset = line.GetRelativeOffset(wordEndVc) + relOffset;
|
||
|
|
return new SimpleSegment(wordStartOffset, wordEndOffset - wordStartOffset);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return SimpleSegment.Invalid;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private SimpleSegment GetLineAtMousePosition(Vector2 posRelativeToTextView)
|
||
|
|
{
|
||
|
|
var textView = TextArea.TextView;
|
||
|
|
if (textView == null) return SimpleSegment.Invalid;
|
||
|
|
var pos = posRelativeToTextView;
|
||
|
|
if (pos.y < 0)
|
||
|
|
pos.y = 0;
|
||
|
|
if (pos.y > textView.Bounds.height)
|
||
|
|
pos.y = textView.Bounds.height;
|
||
|
|
pos += textView.ScrollOffset;
|
||
|
|
var line = textView.GetVisualLineFromVisualTop(pos.y);
|
||
|
|
return line != null && line.TextLines != null
|
||
|
|
? new SimpleSegment(line.StartOffset, line.LastDocumentLine.EndOffset - line.StartOffset)
|
||
|
|
: SimpleSegment.Invalid;
|
||
|
|
}
|
||
|
|
|
||
|
|
private int GetOffsetFromMousePosition(Vector2 mousePosition, out int visualColumn, out bool isAtEndOfLine)
|
||
|
|
{
|
||
|
|
visualColumn = 0;
|
||
|
|
var textView = TextArea.TextView;
|
||
|
|
var pos = mousePosition;
|
||
|
|
if (pos.y < 0)
|
||
|
|
pos.y = 0;
|
||
|
|
if (pos.y > textView.Bounds.height)
|
||
|
|
pos.y = textView.Bounds.height;
|
||
|
|
pos += textView.ScrollOffset;
|
||
|
|
if (pos.y >= textView.DocumentHeight)
|
||
|
|
pos.y = textView.DocumentHeight - ExtensionMethods.Epsilon;
|
||
|
|
var line = textView.GetVisualLineFromVisualTop(pos.y);
|
||
|
|
if (line != null && line.TextLines != null)
|
||
|
|
{
|
||
|
|
visualColumn = line.GetVisualColumn(pos, TextArea.Selection.EnableVirtualSpace, out isAtEndOfLine);
|
||
|
|
return line.GetRelativeOffset(visualColumn) + line.FirstDocumentLine.Offset;
|
||
|
|
}
|
||
|
|
isAtEndOfLine = false;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
private int GetOffsetFromMousePositionFirstTextLineOnly(Vector2 positionRelativeToTextView, out int visualColumn)
|
||
|
|
{
|
||
|
|
visualColumn = 0;
|
||
|
|
var textView = TextArea.TextView;
|
||
|
|
var pos = positionRelativeToTextView;
|
||
|
|
if (pos.y < 0)
|
||
|
|
pos.y = 0;
|
||
|
|
if (pos.y > textView.Bounds.height)
|
||
|
|
pos.y = textView.Bounds.height;
|
||
|
|
pos += textView.ScrollOffset;
|
||
|
|
if (pos.y >= textView.DocumentHeight)
|
||
|
|
pos.y = textView.DocumentHeight - ExtensionMethods.Epsilon;
|
||
|
|
var line = textView.GetVisualLineFromVisualTop(pos.y);
|
||
|
|
if (line != null && line.TextLines != null)
|
||
|
|
{
|
||
|
|
visualColumn = line.GetVisualColumn(line.TextLines.First(), pos.x, TextArea.Selection.EnableVirtualSpace);
|
||
|
|
return line.GetRelativeOffset(visualColumn) + line.FirstDocumentLine.Offset;
|
||
|
|
}
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
private const int MinimumHorizontalDragDistance = 2;
|
||
|
|
private const int MinimumVerticalDragDistance = 2;
|
||
|
|
private const float TripleClickTimeSeconds = 0.5f;
|
||
|
|
private const float TripleClickMaxDistance = 5f;
|
||
|
|
|
||
|
|
#region MouseMove
|
||
|
|
|
||
|
|
internal void OnPointerMoved(PointerMoveEvent e)
|
||
|
|
{
|
||
|
|
Vector2 mousePoint = GetTextViewRelativePosition(e);
|
||
|
|
|
||
|
|
if (_mode == SelectionMode.Normal || _mode == SelectionMode.WholeWord || _mode == SelectionMode.WholeLine || _mode == SelectionMode.Rectangular)
|
||
|
|
{
|
||
|
|
if (TextArea.TextView.VisualLinesValid)
|
||
|
|
{
|
||
|
|
ExtendSelectionToMouse(mousePoint);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (_mode == SelectionMode.PossibleDragStart)
|
||
|
|
{
|
||
|
|
Vector2 mouseMovement = mousePoint - _possibleDragStartMousePos;
|
||
|
|
if (Math.Abs(mouseMovement.x) > MinimumHorizontalDragDistance
|
||
|
|
|| Math.Abs(mouseMovement.y) > MinimumVerticalDragDistance)
|
||
|
|
{
|
||
|
|
// TODO: drag
|
||
|
|
//StartDrag();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region ExtendSelection
|
||
|
|
|
||
|
|
private void SetCaretOffsetToMousePosition(Vector2 posRelativeToTextView)
|
||
|
|
{
|
||
|
|
int visualColumn;
|
||
|
|
bool isAtEndOfLine;
|
||
|
|
int offset;
|
||
|
|
if (_mode == SelectionMode.Rectangular)
|
||
|
|
{
|
||
|
|
offset = GetOffsetFromMousePositionFirstTextLineOnly(posRelativeToTextView, out visualColumn);
|
||
|
|
isAtEndOfLine = true;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
offset = GetOffsetFromMousePosition(posRelativeToTextView, out visualColumn, out isAtEndOfLine);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (offset >= 0)
|
||
|
|
{
|
||
|
|
TextArea.Caret.Position = new TextViewPosition(TextArea.Document.GetLocation(offset), visualColumn) { IsAtEndOfLine = isAtEndOfLine };
|
||
|
|
TextArea.Caret.DesiredXPos = float.NaN;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void ExtendSelectionToMouse(Vector2 posRelativeToTextView)
|
||
|
|
{
|
||
|
|
var oldPosition = TextArea.Caret.Position;
|
||
|
|
if (_mode == SelectionMode.Normal || _mode == SelectionMode.Rectangular)
|
||
|
|
{
|
||
|
|
SetCaretOffsetToMousePosition(posRelativeToTextView);
|
||
|
|
if (_mode == SelectionMode.Normal && TextArea.Selection is RectangleSelection)
|
||
|
|
TextArea.Selection = new SimpleSelection(TextArea, oldPosition, TextArea.Caret.Position);
|
||
|
|
else if (_mode == SelectionMode.Rectangular && !(TextArea.Selection is RectangleSelection))
|
||
|
|
TextArea.Selection = new RectangleSelection(TextArea, oldPosition, TextArea.Caret.Position);
|
||
|
|
else
|
||
|
|
TextArea.Selection = TextArea.Selection.StartSelectionOrSetEndpoint(oldPosition, TextArea.Caret.Position);
|
||
|
|
}
|
||
|
|
else if (_mode == SelectionMode.WholeWord || _mode == SelectionMode.WholeLine)
|
||
|
|
{
|
||
|
|
var newWord = (_mode == SelectionMode.WholeLine) ? GetLineAtMousePosition(posRelativeToTextView) : GetWordAtMousePosition(posRelativeToTextView);
|
||
|
|
if (newWord != SimpleSegment.Invalid && _startWord != null)
|
||
|
|
{
|
||
|
|
TextArea.Selection = Selection.Create(TextArea,
|
||
|
|
Math.Min(newWord.Offset, _startWord.Offset),
|
||
|
|
Math.Max(newWord.EndOffset, _startWord.EndOffset));
|
||
|
|
TextArea.Caret.Offset = newWord.Offset < _startWord.Offset ? newWord.Offset : Math.Max(newWord.EndOffset, _startWord.EndOffset);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
TextArea.Caret.BringCaretToView(5.0f);
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
#region MouseLeftButtonUp
|
||
|
|
|
||
|
|
internal void OnPointerReleased(PointerUpEvent e)
|
||
|
|
{
|
||
|
|
if (_mode == SelectionMode.None)
|
||
|
|
return;
|
||
|
|
Vector2 mousePoint = GetTextViewRelativePosition(e);
|
||
|
|
switch (_mode)
|
||
|
|
{
|
||
|
|
case SelectionMode.PossibleDragStart:
|
||
|
|
SetCaretOffsetToMousePosition(mousePoint);
|
||
|
|
TextArea.ClearSelection();
|
||
|
|
break;
|
||
|
|
case SelectionMode.Normal:
|
||
|
|
case SelectionMode.WholeWord:
|
||
|
|
case SelectionMode.WholeLine:
|
||
|
|
case SelectionMode.Rectangular:
|
||
|
|
if (TextArea.Options.ExtendSelectionOnMouseUp)
|
||
|
|
ExtendSelectionToMouse(mousePoint);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
_mode = SelectionMode.None;
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
}
|
||
|
|
}
|