/// <summary>
/// 将inkspace中的Point转换成像素坐标
/// </summary>
/// <param name="inkpicture"></param>
/// <param name="pt"></param>
/// <returns></returns>
public Point InkSpaceToPixelPoint(InkPicture inkpicture, Point pt)
{
Graphics g = inkpicture.CreateGraphics();
Point p = new Point(pt.X, pt.Y);
inkpicture.Renderer.InkSpaceToPixel(g, ref p);
return p;
}
/// <summary>
/// 将inkspace中的Points转换成为像素空间的坐标
/// </summary>
/// <param name="inkpicture"></param>
/// <param name="points"></param>
/// <returns></returns>
public Point[] InkSpaceToPixelPoints(InkPicture inkpicture, Point[] points)
{
Graphics g = inkpicture.CreateGraphics();
Point[] pts = (Point[])(points.Clone());
inkpicture.Renderer.InkSpaceToPixel(g, ref pts);
return pts;
}
/// <summary>
/// 将inkspace中的rectangle转换成像素的坐标
/// </summary>
/// <param name="inkpicture"></param>
/// <param name="rect"></param>
/// <returns></returns>
public Rectangle InkSpaceToPixelRect(InkPicture inkpicture, Rectangle rect)
{
Graphics g = inkpicture.CreateGraphics();
Point p1 = rect.Location;
Point p2 = new Point(rect.Width, rect.Height);
inkpicture.Renderer.InkSpaceToPixel(g, ref p1);
inkpicture.Renderer.InkSpaceToPixel(g, ref p2);
return(new Rectangle(p1.X, p1.Y, p2.X, p2.Y));
}
/// <summary>
/// <see cref="InvalidateStroke"/>
/// </summary>
/// <param name="iStroke">The Ink stroke to invalidate</param>
/// <param name="padding">Number of pixels to pad invalidation
/// rectangle in Ink space pixels</param>
public void InvalidateStroke(Microsoft.Ink.Stroke iStroke, int padding)
{
using (Graphics g = InkPicture.CreateGraphics())
{
Rectangle bb = iStroke.GetBoundingBox();
System.Drawing.Point upperLeft = new System.Drawing.Point(bb.X - padding, bb.Y - padding);
System.Drawing.Point lowerRight = new System.Drawing.Point(bb.Right + padding, bb.Bottom + padding);
InkPicture.Renderer.InkSpaceToPixel(g, ref upperLeft);
InkPicture.Renderer.InkSpaceToPixel(g, ref lowerRight);
InkPicture.Invalidate(new Rectangle(upperLeft.X, upperLeft.Y, lowerRight.X, lowerRight.Y));
}
}
/// <summary>
/// Displays a tooltip based on the label of the nearest stroke.
/// </summary>
/// <param name="sender">event sender</param>
/// <param name="e">event information, includign mouse location</param>
private void sketchPicture_MouseMove(object sender, MouseEventArgs e)
{
///
/// HACK: turn off tooptip
///
return;
// Get the current mouse position and convert it into InkSpace
System.Drawing.Point mousePt = new System.Drawing.Point(e.X, e.Y);
Graphics graphics = sketchPicture.CreateGraphics();
sketchPicture.Renderer.PixelToInkSpace(graphics, ref mousePt);
// Get the Microsoft Stroke closest to the mouse pointer
float strokePt, distance;
Microsoft.Ink.Stroke closestMSubstroke = sketchPicture.Ink.NearestPoint(mousePt, out strokePt, out distance);
if (closestMSubstroke == null)
{
return;
}
// Fire tooltip if the mouse pointer is close enough
if (distance < UIConstants.ColorFeedbackMechanismTooltipDistanceThreshold)
{
// Get the stroke's label, if it has one
if (!ink2sketchLabelTable.Contains(closestMSubstroke.Id))
{
return;
}
string label = (string)ink2sketchLabelTable[closestMSubstroke.Id];
// Show the ToolTip
this.toolTip.SetToolTip(sketchPicture, label);
this.toolTip.Active = true;
}
else
{
// Don't show the ToolTip if the mouse pointer is not close
this.toolTip.Active = false;
}
}
/// <summary>
/// Set Ink stroke text labels based upon domain
/// </summary>
public override void FireFeedbackMechanism(Sketch.Sketch sketch,
InkPicture inkPicture, Hashtable ink2sketchIdTable, FeedbackContext context)
{
//
// Preprocessing
//
// Remove all current textboxes from the inkPicture
// and clear the table of textboxes; start out fresh
foreach (Label currentLabel in textboxList)
{
inkPicture.Controls.Remove(currentLabel);
}
textboxList.Clear();
// Build hashtable of sketch substroke Ids to ink strokes
Hashtable substroke2InkTable = new Hashtable();
System.Guid currentGuid;
foreach (Microsoft.Ink.Stroke iStroke in inkPicture.Ink.Strokes)
{
// If this ink stroke does not have a
// corresponding sketch stroke, skip it
if (!ink2sketchIdTable.Contains(iStroke.Id))
{
continue;
}
currentGuid = (System.Guid)ink2sketchIdTable[iStroke.Id];
substroke2InkTable.Add(currentGuid, iStroke);
}
//
// Iterate through shapes
//
Graphics g = inkPicture.CreateGraphics();
foreach (Sketch.Shape shape in sketch.Shapes)
{
// Get label of this shape
string label = shape.Substrokes[0].GetFirstLabel();
//
// Color wires and don't label them
//
if (label == "Wire")
{
foreach (Sketch.Substroke substroke in shape.Substrokes)
{
if (!substroke2InkTable.Contains(substroke.XmlAttrs.Id))
{
// If, for some reason, there is no ink stroke
// that corresponds to this substroke, skip it
continue;
}
Microsoft.Ink.Stroke iStroke = (Microsoft.Ink.Stroke)substroke2InkTable[substroke.XmlAttrs.Id];
iStroke.DrawingAttributes.Color = UIConstants.TextFeedbackMechanismWireColor;
}
}
//
// Draw boxes over input/output labels
//
else if (label == "Label")
{
// For efficiency's sake, we color the strokes while calculating the bounding box.
Rectangle boundingBox = calculateBoundingBox(shape, substroke2InkTable, true);
// Devise the (x,y) location of the text label on the screen
System.Drawing.Point upperLeft = new System.Drawing.Point(boundingBox.X, boundingBox.Y);
System.Drawing.Point lowerRight = new System.Drawing.Point(boundingBox.Right, boundingBox.Bottom);
inkPicture.Renderer.InkSpaceToPixel(g, ref upperLeft);
inkPicture.Renderer.InkSpaceToPixel(g, ref lowerRight);
upperLeft.X -= 10;
upperLeft.Y -= 10;
lowerRight.X += 10;
lowerRight.Y += 10;
int bwidth = lowerRight.X - upperLeft.X;
int bheight = lowerRight.Y - upperLeft.Y;
// Create bounding box for label
// HACK!! TODO: draw a transparent label
// instead of four labels to make
// a box around the symbol
Label topLabel = new Label();
Label bottomLabel = new Label();
Label leftLabel = new Label();
Label rightLabel = new Label();
topLabel.UseMnemonic = false;
bottomLabel.UseMnemonic = false;
leftLabel.UseMnemonic = false;
rightLabel.UseMnemonic = false;
topLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
bottomLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
leftLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
rightLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
// Set label positions
topLabel.Location = upperLeft;
topLabel.Height = 1;
topLabel.Width = bwidth;
bottomLabel.Location = new System.Drawing.Point(upperLeft.X, upperLeft.Y + bheight);
bottomLabel.Height = 1;
bottomLabel.Width = bwidth;
leftLabel.Location = new System.Drawing.Point(upperLeft.X, upperLeft.Y);
leftLabel.Height = bheight;
leftLabel.Width = 1;
rightLabel.Location = new System.Drawing.Point(upperLeft.X + bwidth, upperLeft.Y);
rightLabel.Height = bheight;
rightLabel.Width = 1;
topLabel.Enabled = true;
bottomLabel.Enabled = true;
leftLabel.Enabled = true;
rightLabel.Enabled = true;
inkPicture.Controls.Add(topLabel);
inkPicture.Controls.Add(bottomLabel);
inkPicture.Controls.Add(leftLabel);
inkPicture.Controls.Add(rightLabel);
textboxList.Add(topLabel);
textboxList.Add(bottomLabel);
textboxList.Add(leftLabel);
textboxList.Add(rightLabel);
}
//
// Draw labels for other symbols
//
else
{
// For efficiency's sake, we color the strokes while calculating the bounding box.
Rectangle boundingBox = calculateBoundingBox(shape, substroke2InkTable, true);
// Devise the (x,y) location of the text label on the screen
System.Drawing.Point center = new System.Drawing.Point(boundingBox.Width / 2 + boundingBox.Left,
boundingBox.Height / 2 + boundingBox.Top);
System.Drawing.Point upperLeft = new System.Drawing.Point(boundingBox.X, boundingBox.Y);
System.Drawing.Point lowerRight = new System.Drawing.Point(boundingBox.Right, boundingBox.Bottom);
inkPicture.Renderer.InkSpaceToPixel(g, ref center);
inkPicture.Renderer.InkSpaceToPixel(g, ref upperLeft);
inkPicture.Renderer.InkSpaceToPixel(g, ref lowerRight);
center.X += inkPicture.Bounds.X;
center.Y += inkPicture.Bounds.Y;
// Create textbox for label
Label textLabel = new Label();
textLabel.UseMnemonic = false;
textLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
textLabel.Text = label;
textLabel.TextAlign = ContentAlignment.MiddleCenter;
textLabel.AutoSize = true;
// Position label so that it is either on top of the symbol,
// or, if the symbol is very small, along side the symbol
int bwidth = lowerRight.X - upperLeft.X;
int bheight = lowerRight.Y - upperLeft.Y;
if (textLabel.Width < bwidth && textLabel.Height < bheight)
{
center.X -= textLabel.Width / 2;
center.Y -= textLabel.Height / 2;
}
else
{
// If taller than is wide, place label to the right;
// else place label just above symbol
if (boundingBox.Height > boundingBox.Width)
{
center.Y -= textLabel.Height / 2;
center.X += bwidth / 2;
}
else
{
center.Y += bheight / 2;
center.X -= textLabel.Width / 2;
}
}
textLabel.Location = center;
textLabel.Enabled = true;
inkPicture.Controls.Add(textLabel);
textboxList.Add(textLabel);
}
}
}
