// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt) // This code is distributed under the GNU LGPL (for details please see \doc\license.txt) using System; using System.Collections.Generic; using System.Windows; using System.Windows.Input; using System.Windows.Media; using ICSharpCode.AvalonEdit.Editing; using ICSharpCode.AvalonEdit.Rendering; using ICSharpCode.AvalonEdit.Utils; using ICSharpCode.SharpDevelop.Bookmarks; using ICSharpCode.SharpDevelop.Debugging; using ICSharpCode.SharpDevelop.Editor; using ICSharpCode.SharpDevelop.Gui; namespace ICSharpCode.SharpSnippetCompiler.Core { /// /// Icon bar: contains breakpoints and other icons. /// public class IconBarMargin : AbstractMargin, IDisposable { readonly IBookmarkMargin manager; public IconBarMargin(IBookmarkMargin manager) { if (manager == null) throw new ArgumentNullException("manager"); this.manager = manager; } #region OnTextViewChanged /// protected override void OnTextViewChanged(TextView oldTextView, TextView newTextView) { if (oldTextView != null) { oldTextView.VisualLinesChanged -= OnRedrawRequested; manager.RedrawRequested -= OnRedrawRequested; } base.OnTextViewChanged(oldTextView, newTextView); if (newTextView != null) { newTextView.VisualLinesChanged += OnRedrawRequested; manager.RedrawRequested += OnRedrawRequested; } InvalidateVisual(); } void OnRedrawRequested(object sender, EventArgs e) { // Don't invalidate the IconBarMargin if it'll be invalidated again once the // visual lines become valid. if (this.TextView != null && this.TextView.VisualLinesValid) { InvalidateVisual(); } } public virtual void Dispose() { this.TextView = null; // detach from TextView (will also detach from manager) } #endregion /// protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters) { // accept clicks even when clicking on the background return new PointHitTestResult(this, hitTestParameters.HitPoint); } /// protected override Size MeasureOverride(Size availableSize) { return new Size(18, 0); } protected override void OnRender(DrawingContext drawingContext) { Size renderSize = this.RenderSize; drawingContext.DrawRectangle(SystemColors.ControlBrush, null, new Rect(0, 0, renderSize.Width, renderSize.Height)); drawingContext.DrawLine(new Pen(SystemColors.ControlDarkBrush, 1), new Point(renderSize.Width - 0.5, 0), new Point(renderSize.Width - 0.5, renderSize.Height)); TextView textView = this.TextView; if (textView != null && textView.VisualLinesValid) { // create a dictionary line number => first bookmark Dictionary bookmarkDict = new Dictionary(); foreach (IBookmark bm in manager.Bookmarks) { int line = bm.LineNumber; IBookmark existingBookmark; if (!bookmarkDict.TryGetValue(line, out existingBookmark) || bm.ZOrder > existingBookmark.ZOrder) bookmarkDict[line] = bm; } Size pixelSize = PixelSnapHelpers.GetPixelSize(this); foreach (VisualLine line in textView.VisualLines) { int lineNumber = line.FirstDocumentLine.LineNumber; IBookmark bm; if (bookmarkDict.TryGetValue(lineNumber, out bm)) { double lineMiddle = line.GetTextLineVisualYPosition(line.TextLines[0], VisualYPosition.TextMiddle) - textView.VerticalOffset; Rect rect = new Rect(0, PixelSnapHelpers.Round(lineMiddle - 8, pixelSize.Height), 16, 16); if (dragDropBookmark == bm && dragStarted) drawingContext.PushOpacity(0.5); drawingContext.DrawImage((bm.Image ?? BookmarkBase.DefaultBookmarkImage).ImageSource, rect); if (dragDropBookmark == bm && dragStarted) drawingContext.Pop(); } } if (dragDropBookmark != null && dragStarted) { Rect rect = new Rect(0, PixelSnapHelpers.Round(dragDropCurrentPoint - 8, pixelSize.Height), 16, 16); drawingContext.DrawImage((dragDropBookmark.Image ?? BookmarkBase.DefaultBookmarkImage).ImageSource, rect); } } } IBookmark dragDropBookmark; // bookmark being dragged (!=null if drag'n'drop is active) double dragDropStartPoint; double dragDropCurrentPoint; bool dragStarted; // whether drag'n'drop operation has started (mouse was moved minimum distance) protected override void OnMouseDown(MouseButtonEventArgs e) { CancelDragDrop(); base.OnMouseDown(e); int line = GetLineFromMousePosition(e); if (!e.Handled && line > 0) { IBookmark bm = GetBookmarkFromLine(line); if (bm != null) { bm.MouseDown(e); if (!e.Handled) { if (e.ChangedButton == MouseButton.Left && bm.CanDragDrop && CaptureMouse()) { StartDragDrop(bm, e); e.Handled = true; } } } } // don't allow selecting text through the IconBarMargin if (e.ChangedButton == MouseButton.Left) e.Handled = true; } IBookmark GetBookmarkFromLine(int line) { IBookmark result = null; foreach (IBookmark bm in manager.Bookmarks) { if (bm.LineNumber == line) { if (result == null || bm.ZOrder > result.ZOrder) result = bm; } } return result; } protected override void OnLostMouseCapture(MouseEventArgs e) { CancelDragDrop(); base.OnLostMouseCapture(e); } void StartDragDrop(IBookmark bm, MouseEventArgs e) { dragDropBookmark = bm; dragDropStartPoint = dragDropCurrentPoint = e.GetPosition(this).Y; if (TextView != null) { TextArea area = TextView.Services.GetService(typeof(TextArea)) as TextArea; if (area != null) area.PreviewKeyDown += TextArea_PreviewKeyDown; } } void CancelDragDrop() { if (dragDropBookmark != null) { dragDropBookmark = null; dragStarted = false; if (TextView != null) { TextArea area = TextView.Services.GetService(typeof(TextArea)) as TextArea; if (area != null) area.PreviewKeyDown -= TextArea_PreviewKeyDown; } ReleaseMouseCapture(); InvalidateVisual(); } } void TextArea_PreviewKeyDown(object sender, KeyEventArgs e) { // any key press cancels drag'n'drop CancelDragDrop(); if (e.Key == Key.Escape) e.Handled = true; } int GetLineFromMousePosition(MouseEventArgs e) { TextView textView = this.TextView; if (textView == null) return 0; VisualLine vl = textView.GetVisualLineFromVisualTop(e.GetPosition(textView).Y + textView.ScrollOffset.Y); if (vl == null) return 0; return vl.FirstDocumentLine.LineNumber; } protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (dragDropBookmark != null) { dragDropCurrentPoint = e.GetPosition(this).Y; if (Math.Abs(dragDropCurrentPoint - dragDropStartPoint) > SystemParameters.MinimumVerticalDragDistance) dragStarted = true; InvalidateVisual(); } } protected override void OnMouseUp(MouseButtonEventArgs e) { base.OnMouseUp(e); int line = GetLineFromMousePosition(e); if (!e.Handled && dragDropBookmark != null) { if (dragStarted) { if (line != 0) dragDropBookmark.Drop(line); e.Handled = true; } CancelDragDrop(); } if (!e.Handled && line != 0) { IBookmark bm = GetBookmarkFromLine(line); if (bm != null) { bm.MouseUp(e); if (e.Handled) return; } if (e.ChangedButton == MouseButton.Left && TextView != null) { // no bookmark on the line: create a new breakpoint ITextEditor textEditor = TextView.Services.GetService(typeof(ITextEditor)) as ITextEditor; if (textEditor != null) { DebuggerService.ToggleBreakpointAt(textEditor, line, typeof(BreakpointBookmark)); return; } // create breakpoint for the other posible active contents var viewContent = WorkbenchSingleton.Workbench.ActiveContent as AbstractViewContentWithoutFile; if (viewContent != null) { textEditor = viewContent.Services.GetService(typeof(ITextEditor)) as ITextEditor; if (textEditor != null) { DebuggerService.ToggleBreakpointAt(textEditor, line, typeof(DecompiledBreakpointBookmark)); return; } } } } } } }