private void DrawAnnotation(IAnnotation annotation, DiagramDrawingStyle style, D2dGraphics g, bool drawText, RectangleF graphBound)
{
// fill background
Rectangle bounds = annotation.Bounds;
Color backColor = m_coloringContext == null
? SystemColors.Info
: (Color) m_coloringContext.GetColor(ColoringTypes.BackColor, annotation);
// keep the width of border in 1 pixel after transformation to avoid D2d antialiasing away the line
float borderThickness = 1.0f/m_scaleX;
g.FillRectangle(bounds, backColor);
g.DrawRectangle(bounds, ControlPaint.Dark(backColor), borderThickness, null);
// draw titlebar
if (style == DiagramDrawingStyle.LastSelected || style == DiagramDrawingStyle.Selected)
{
var titleBarRect = new RectangleF(bounds.X, bounds.Y, bounds.Width, Margin.Top - 1);
g.FillRectangle(titleBarRect, ControlPaint.Dark(backColor));
}
// line seperate titlebar from text content
g.DrawLine(bounds.X, bounds.Y + Margin.Top-1, bounds.X + bounds.Width, bounds.Y + Margin.Top-1, ControlPaint.Dark(backColor), borderThickness);
// draw content
if (drawText)
{
var contentBounds = new RectangleF(bounds.X + Margin.Left, bounds.Y + Margin.Top,
bounds.Width - Margin.Size.Width, bounds.Height - Margin.Size.Height);
contentBounds.Width = Math.Max(contentBounds.Width, MinimumWidth);
contentBounds.Height = Math.Max(contentBounds.Height, MinimumHeight);
var textBounds = contentBounds;
int topLine = 0;
D2dTextLayout textLayout = null;
if (m_annotationEditors.ContainsKey(annotation))
{
var annotationEditor = m_annotationEditors[annotation];
if (annotationEditor.TextLayout.Text != annotation.Text) // text content changed, for example, undo,redo
{
annotationEditor.ResetText(annotation.Text);
}
topLine = annotationEditor.TopLine;
textLayout = m_annotationEditors[annotation].TextLayout;
annotationEditor.VerticalScrollBarVisibe = textLayout.Height > textLayout.LayoutHeight;
if (m_annotationEditors[annotation].VerticalScrollBarVisibe)
textBounds.Width -= ScrollBarWidth + 2 * ScrollBarMargin;
textLayout.LayoutWidth = textBounds.Width;
textLayout.LayoutHeight = textBounds.Height;
}
if (textLayout == null)
{
// first assume no v-scroll bar needed
textLayout = D2dFactory.CreateTextLayout(annotation.Text, m_theme.TextFormat, contentBounds.Width, contentBounds.Height);
if (m_theme.TextFormat.Underlined)
textLayout.SetUnderline(true, 0, annotation.Text.Length);
if (m_theme.TextFormat.Strikeout)
textLayout.SetStrikethrough(true, 0, annotation.Text.Length);
if (textLayout.Height > textLayout.LayoutHeight) // need v-scroll bar
{
textLayout.LayoutWidth = contentBounds.Width - ScrollBarWidth - 2*ScrollBarMargin;
}
m_annotationEditors.Add(annotation, new TextEditor()
{
TextLayout = textLayout,
TextFormat = m_theme.TextFormat,
TopLine = topLine,
VerticalScrollBarVisibe = textLayout.Height > textLayout.LayoutHeight
});
}
var annotationData = m_annotationEditors[annotation];
PointF origin = new PointF(contentBounds.Location.X, contentBounds.Location.Y - topLine * m_theme.TextFormat.FontHeight);
g.PushAxisAlignedClip(contentBounds);
// draw the selection range behind the text.
if (annotationData.SelectionLength > 0)
{
var hitTestMetrics = textLayout.HitTestTextRange(annotationData.SelectionStart, annotationData.SelectionLength, 0, 0);
for (int i = 0; i < hitTestMetrics.Length; ++i)
{
var highlightRect = new RectangleF(hitTestMetrics[i].Point.X, hitTestMetrics[i].Point.Y, hitTestMetrics[i].Width,
hitTestMetrics[i].Height);
highlightRect.Offset(origin);
g.FillRectangle(highlightRect, m_theme.TextHighlightBrush);
}
}
// draw caret
if ( style == DiagramDrawingStyle.Selected || style == DiagramDrawingStyle.LastSelected)
{
textLayout = annotationData.TextLayout;
var caretRect = m_annotationEditors[annotation].GetCaretRect();
caretRect.Offset(origin);
//g.FillRectangle(caretRect, m_theme.HotBrush);
// set Windows caret position
if (m_editingText && contentBounds.IntersectsWith(caretRect) && graphBound.IntersectsWith(caretRect) && AdaptedControl.Focused)
{
var caretClientRect = GdiUtil.Transform(m_transformAdapter.Transform, caretRect);
float ratio = m_scaleX*m_theme.TextFormat.FontHeight/CaretHeight;
if (ratio > 1.1f || ratio < 0.9f) // adjust caret height
{
CaretHeight = (int)(m_scaleX*m_theme.TextFormat.FontHeight);
User32.DestroyCaret();
User32.CreateCaret(AdaptedControl.Handle, IntPtr.Zero, CaretWidth, CaretHeight);
}
// align bottom
User32.SetCaretPos((int) caretClientRect.X, (int)(caretClientRect.Y + caretClientRect.Height - CaretHeight));
if (!m_rmbPressed)
AdaptedControl.HasKeyboardFocus = true;
}
else
HideCaret();
}
// draw text
g.DrawTextLayout(origin, textLayout, m_theme.TextBrush);
g.PopAxisAlignedClip();
// draw v-scroll bar
if (contentBounds.Height < textLayout.Height)
{
float visibleLines = contentBounds.Height / m_theme.TextFormat.FontHeight;
float vMin = topLine * textLayout.LayoutHeight / textLayout.LineCount;
float vMax = (topLine + visibleLines-1) * textLayout.LayoutHeight / textLayout.LineCount;
if (m_scrolling)
{
var trackBounds = new RectangleF(contentBounds.Right - ScrollBarMargin - ScrollBarWidth, contentBounds.Y, ScrollBarWidth, contentBounds.Height);
g.FillRectangle(trackBounds, Color.Gainsboro);
}
var thumbBounds = new RectangleF(contentBounds.Right - ScrollBarMargin - ScrollBarWidth, contentBounds.Y + vMin, ScrollBarWidth, vMax - vMin);
g.FillRectangle(thumbBounds, Color.DimGray);
}
}
else
HideCaret();
}
private void DrawAnnotation(IAnnotation annotation, DiagramDrawingStyle style, D2dGraphics g, bool drawText, RectangleF graphBound)
{
// fill background
Rectangle bounds = annotation.Bounds;
Color backColor = m_coloringContext == null
? SystemColors.Info
: m_coloringContext.GetColor(ColoringTypes.BackColor, annotation);
Color foreColor = m_coloringContext == null
? SystemColors.WindowText
: m_coloringContext.GetColor(ColoringTypes.ForeColor, annotation);
// keep the width of border in 2 pixel after transformation to avoid D2d antialiasing away the line
float borderThickness = 2.0f/m_scaleX;
g.FillRectangle(bounds, backColor);
g.DrawRectangle(bounds, m_theme.GetOutLineBrush(style), borderThickness);
//// draw titlebar
//if (style == DiagramDrawingStyle.LastSelected || style == DiagramDrawingStyle.Selected)
//{
// var titleBarRect = new RectangleF(bounds.X, bounds.Y, bounds.Width, Margin.Top - 1);
// g.FillRectangle(titleBarRect, ControlPaint.Dark(backColor));
//}
//// line seperate titlebar from text content
//g.DrawLine(bounds.X, bounds.Y + Margin.Top-1, bounds.X + bounds.Width, bounds.Y + Margin.Top-1, ControlPaint.Dark(backColor), borderThickness);
// draw content
if (drawText)
{
var contentBounds = new RectangleF(bounds.X + Margin.Left, bounds.Y + Margin.Top,
bounds.Width - Margin.Size.Width, bounds.Height - Margin.Size.Height);
contentBounds.Width = Math.Max(contentBounds.Width, MinimumWidth);
contentBounds.Height = Math.Max(contentBounds.Height, MinimumHeight);
var textBounds = contentBounds;
TextEditor textEditor;
if (!m_annotationEditors.TryGetValue(annotation,out textEditor))
{
// first assume no v-scroll bar needed
var textLayout = D2dFactory.CreateTextLayout(annotation.Text, m_theme.TextFormat, contentBounds.Width, contentBounds.Height);
if (m_theme.TextFormat.Underlined)
textLayout.SetUnderline(true, 0, annotation.Text.Length);
if (m_theme.TextFormat.Strikeout)
textLayout.SetStrikethrough(true, 0, annotation.Text.Length);
if (textLayout.Height > textLayout.LayoutHeight) // need v-scroll bar
{
textLayout.LayoutWidth = contentBounds.Width - ScrollBarWidth - 2 * ScrollBarMargin;
}
textEditor = new TextEditor
{
TextLayout = textLayout,
TextFormat = m_theme.TextFormat,
TopLine = 0,
VerticalScrollBarVisibe = textLayout.Height > textLayout.LayoutHeight
};
m_annotationEditors.Add(annotation, textEditor);
}
else if (textEditor.TextLayout.Text != annotation.Text) // text content changed, for example, undo,redo
{
textEditor.ResetText(annotation.Text);
}
int topLine = textEditor.TopLine;
textEditor.VerticalScrollBarVisibe = textEditor.TextLayout.Height > textEditor.TextLayout.LayoutHeight;
if (textEditor.VerticalScrollBarVisibe)
textBounds.Width -= ScrollBarWidth + 2 * ScrollBarMargin;
if (Math.Abs(textEditor.TextLayout.LayoutWidth - textBounds.Width) +
Math.Abs(textEditor.TextLayout.LayoutHeight - textBounds.Height) > 1.0)
{
textEditor.TextLayout.LayoutWidth = textBounds.Width; // layout width and height can be updated
textEditor.TextLayout.LayoutHeight = textBounds.Height;
textEditor.Validate();
}
float yOffset = textEditor.GetLineYOffset(topLine);
PointF origin = new PointF(contentBounds.Location.X, contentBounds.Location.Y - yOffset);
g.PushAxisAlignedClip(contentBounds);
// adjust caret.
// pull out this code to the caller.
if ( annotation == m_editingAnnotation && m_caretCreated)
{
var caretRect = textEditor.GetCaretRect();
caretRect.Offset(origin);
// set Windows caret position
if (contentBounds.IntersectsWith(caretRect) && AdaptedControl.Focused)
{
Matrix3x2F xform = m_transformAdapter != null ? m_transformAdapter.Transform
: g.Transform;
var caretClientRect = Matrix3x2F.Transform(xform, caretRect);
float ratio = m_scaleX*m_theme.TextFormat.FontHeight/CaretHeight;
if (ratio > 1.1f || ratio < 0.9f) // adjust caret height
{
CaretHeight = (int)(m_scaleX*m_theme.TextFormat.FontHeight);
User32.DestroyCaret();
User32.CreateCaret(AdaptedControl.Handle, IntPtr.Zero, CaretWidth, CaretHeight);
}
// align bottom
User32.SetCaretPos((int) caretClientRect.X, (int)(caretClientRect.Y + caretClientRect.Height - CaretHeight));
if (!m_rmbPressed)
AdaptedControl.HasKeyboardFocus = true;
}
else
HideCaret();
}
// draw the selection range above the text.
if (textEditor.SelectionLength > 0)
{
D2dBrush hibrush = AdaptedControl.Focused ? m_theme.TextHighlightBrush : m_solidBrush;
var hitTestMetrics = textEditor.TextLayout.HitTestTextRange(textEditor.SelectionStart, textEditor.SelectionLength, 0, 0);
for (int i = 0; i < hitTestMetrics.Length; ++i)
{
var highlightRect = new RectangleF(hitTestMetrics[i].Point.X, hitTestMetrics[i].Point.Y, hitTestMetrics[i].Width,
hitTestMetrics[i].Height);
highlightRect.Offset(origin);
g.FillRectangle(highlightRect, hibrush);
}
}
// draw text
g.DrawTextLayout(origin, textEditor.TextLayout, foreColor);
g.PopAxisAlignedClip();
// draw v-scroll bar
// if (contentBounds.Height < textEditor.TextLayout.Height)
if(textEditor.VerticalScrollBarVisibe)
{
float visibleLines = textEditor.GetVisibleLines();
float vMin = topLine * contentBounds.Height / textEditor.TextLayout.LineCount;
float vMax = (topLine + visibleLines - 1) * contentBounds.Height / textEditor.TextLayout.LineCount;
// if (m_scrolling)
// {
var trackBounds = new RectangleF(contentBounds.Right - ScrollBarMargin - ScrollBarWidth, contentBounds.Y, ScrollBarWidth, contentBounds.Height);
g.FillRectangle(trackBounds, Color.Gainsboro);
// }
var thumbBounds = new RectangleF(contentBounds.Right - ScrollBarMargin - ScrollBarWidth, contentBounds.Y + vMin, ScrollBarWidth, vMax - vMin);
g.FillRectangle(thumbBounds, Color.DimGray);
}
}
}