/// <summary>
/// Create textbox for in-place editing
/// </summary>
public void CreateTextBox(GraphicsText graphicsText, DrawingCanvas drawingCanvas)
{
graphicsText.IsSelected = false; // selection marks don't look good with textbox
// Keep old text in the case Esc is pressed while editing
oldText = graphicsText.Text;
// Keep reference to edited object
editedGraphicsText = graphicsText;
textBox = new TextBox();
textBox.Width = graphicsText.Rectangle.Width;
textBox.Height = graphicsText.Rectangle.Height;
textBox.FontFamily = new FontFamily(graphicsText.TextFontFamilyName);
textBox.FontSize = graphicsText.TextFontSize;
textBox.FontStretch = graphicsText.TextFontStretch;
textBox.FontStyle = graphicsText.TextFontStyle;
textBox.FontWeight = graphicsText.TextFontWeight;
textBox.Text = graphicsText.Text;
textBox.AcceptsReturn = true;
textBox.TextWrapping = TextWrapping.Wrap;
drawingCanvas.Children.Add(textBox);
Canvas.SetLeft(textBox, graphicsText.Rectangle.Left);
Canvas.SetTop(textBox, graphicsText.Rectangle.Top);
textBox.Width = textBox.Width;
textBox.Height = textBox.Height;
textBox.Focus();
textBox.LostFocus += new RoutedEventHandler(textBox_LostFocus);
textBox.LostKeyboardFocus += new KeyboardFocusChangedEventHandler(textBox_LostKeyboardFocus);
textBox.PreviewKeyDown += new KeyEventHandler(textBox_PreviewKeyDown);
textBox.ContextMenu = null; // see notes in textBox_LostKeyboardFocus
// Initially textbox is set to the same rectangle as graphicsText.
// After textbox loading its template is available, and we can
// correct textbox position - see details in the textBox_Loaded function.
textBox.Loaded += new RoutedEventHandler(textBox_Loaded);
}
public PropertiesGraphicsText(GraphicsText graphicsText)
{
if ( graphicsText == null )
{
throw new ArgumentNullException("graphicsText");
}
this.text = graphicsText.Text;
this.left = graphicsText.Left;
this.top = graphicsText.Top;
this.right = graphicsText.Right;
this.bottom = graphicsText.Bottom;
this.objectColor = graphicsText.ObjectColor;
this.textFontSize = graphicsText.TextFontSize;
this.textFontFamilyName = graphicsText.TextFontFamilyName;
this.textFontStyle = FontConversions.FontStyleToString(graphicsText.TextFontStyle);
this.textFontWeight = FontConversions.FontWeightToString(graphicsText.TextFontWeight);
this.textFontStretch = FontConversions.FontStretchToString(graphicsText.TextFontStretch);
this.actualScale = graphicsText.ActualScale;
this.ID = graphicsText.Id;
this.selected = graphicsText.IsSelected;
}
/// <summary>
/// Hide in-place editing textbox.
/// Called from TextTool, when user pressed Enter or Esc,
/// or from this class, when user clicks on the canvas.
///
/// graphicsText passed to this function can be new text added by
/// ToolText, or existing text opened for editing.
/// If ToolText.OldText is empty, this is new object.
/// If not, this is existing object.
/// </summary>
internal void HideTextbox(GraphicsText graphicsText)
{
if (toolText.TextBox == null)
{
return;
}
graphicsText.IsSelected = true; // restore selection which was removed for better textbox appearance
if (toolText.TextBox.Text.Trim().Length == 0)
{
// Textbox is empty: remove text object.
if (!String.IsNullOrEmpty(toolText.OldText)) // existing text was edited
{
// Since text object is removed now,
// Add Delete command to the history
undoManager.AddCommandToHistory(new CommandDelete(this));
}
// Remove empty text object
graphicsList.Remove(graphicsText);
}
else
{
if (!String.IsNullOrEmpty(toolText.OldText)) // existing text was edited
{
if (toolText.TextBox.Text.Trim() != toolText.OldText) // text was really changed
{
// Create command
CommandChangeState command = new CommandChangeState(this);
// Make change in the text object
graphicsText.Text = toolText.TextBox.Text.Trim();
graphicsText.UpdateRectangle();
// Keep state after change and add command to the history
command.NewState(this);
undoManager.AddCommandToHistory(command);
}
}
else // new text was added
{
// Make change in the text object
graphicsText.Text = toolText.TextBox.Text.Trim();
graphicsText.UpdateRectangle();
// Add command to the history
undoManager.AddCommandToHistory(new CommandAdd(graphicsText));
}
}
// Remove textbox and set it to null.
this.Children.Remove(toolText.TextBox);
toolText.TextBox = null;
// This enables back all ApplicationCommands,
// which are disabled while textbox is active.
this.Focus();
}
public override GraphicsBase CreateGraphics()
{
GraphicsBase b = new GraphicsText(
text,
left,
top,
right,
bottom,
objectColor,
textFontSize,
textFontFamilyName,
FontConversions.FontStyleFromString(textFontStyle),
FontConversions.FontWeightFromString(textFontWeight),
FontConversions.FontStretchFromString(textFontStretch),
actualScale);
if (this.ID != 0)
{
b.Id = this.ID;
b.IsSelected = this.selected;
}
return b;
}
