public static BioSignPoint toBioSignPoint(wgssSTU.IPenData penData)
{
BioSignPoint result = new BioSignPoint();
result.Pressure = penData.pressure;
result.Rdy = penData.rdy;
result.Sw = penData.sw;
result.X = penData.x;
result.Y = penData.y;
result.Time = System.DateTime.Now;
return result;
}
// Process incoming pen data
private void onPenData(wgssSTU.IPenData penData)
{
Point pt = tabletToScreen(WacomPadUtils.toBioSignPoint(penData));
int btn = 0; // will be +ve if the pen is over a button.
{
for (int i = 0; i < m_btns.Length; ++i)
{
if (m_btns[i].Bounds.Contains(pt))
{
btn = i + 1;
break;
}
}
}
bool isDown = (penData.sw != 0);
// This code uses a model of four states the pen can be in:
// down or up, and whether this is the first sample of that state.
if (isDown)
{
if (m_isDown == 0)
{
// transition to down
if (btn > 0)
{
// We have put the pen down on a button.
// Track the pen without inking on the client.
m_isDown = btn;
}
else
{
// We have put the pen down somewhere else.
// Treat it as part of the signature.
m_isDown = -1;
}
}
else
{
// already down, keep doing what we're doing!
}
// draw
if (this.sign.Points.Count != 0 && m_isDown == -1)
{
// Draw a line from the previous down point to this down point.
// This is the simplist thing you can do; a more sophisticated program
// can perform higher quality rendering than this!
Graphics gfx = this.CreateGraphics();
gfx.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
gfx.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
gfx.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
gfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
BioSignPoint prevPenData = this.sign.Points[this.sign.Points.Count - 1];
PointF prev = tabletToClient(prevPenData);
gfx.DrawLine(m_penInk, prev, tabletToClient(WacomPadUtils.toBioSignPoint(penData)));
gfx.Dispose();
}
// The pen is down, store it for use later.
if (m_isDown == -1)
this.sign.addPoint(WacomPadUtils.toBioSignPoint(penData));
}
else
{
if (m_isDown != 0)
{
// transition to up
if (btn > 0)
{
// The pen is over a button
if (btn == m_isDown)
{
// The pen was pressed down over the same button as is was lifted now.
// Consider that as a click!
m_btns[btn - 1].PerformClick();
}
}
m_isDown = 0;
}
else
{
// still up
}
// Add up data once we have collected some down data.
if ((this.sign!= null)&&(this.sign.Points.Count != 0))
this.sign.addPoint(WacomPadUtils.toBioSignPoint(penData));
}
}
private void onGetReportException(wgssSTU.ITabletEventsException tabletEventsException)
{
try
{
tabletEventsException.getException();
}
catch (Exception e)
{
//TODO Log4NET
m_tablet.disconnect();
m_tablet = null;
this.sign = null;
this.Close();
}
}
public WacomPadForm(wgssSTU.IUsbDevice usbDevice, int points)
{
semaphore = true;
this.minPoints = points;
if (presingString != null)
{
presignText.Text = presingString;
}
this.sign = new GraphSign();
// This is a DPI aware application, so ensure you understand how .NET client coordinates work.
// Testing using a Windows installation set to a high DPI is recommended to understand how
// values get scaled or not.
this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
InitializeComponent();
m_tablet = new wgssSTU.Tablet();
wgssSTU.ProtocolHelper protocolHelper = new wgssSTU.ProtocolHelper();
// A more sophisticated applications should cycle for a few times as the connection may only be
// temporarily unavailable for a second or so.
// For example, if a background process such as Wacom STU Display
// is running, this periodically updates a slideshow of images to the device.
wgssSTU.IErrorCode ec = m_tablet.usbConnect(usbDevice, true);
if (ec.value == 0)
{
m_capability = m_tablet.getCapability();
m_information = m_tablet.getInformation();
}
else
{
throw new Exception(ec.message);
}
this.SuspendLayout();
this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
// Set the size of the client window to be actual size,
// based on the reported DPI of the monitor.
Size clientSize = new Size((int)(m_capability.tabletMaxX / 2540F * 96F), (int)(m_capability.tabletMaxY / 2540F * 96F));
this.ClientSize = clientSize;
this.ResumeLayout();
m_btns = new Button[3];
if (usbDevice.idProduct != 0x00a2)
{
// Place the buttons across the bottom of the screen.
int w2 = m_capability.screenWidth / 3;
int w3 = m_capability.screenWidth / 3;
int w1 = m_capability.screenWidth - w2 - w3;
int y = m_capability.screenHeight * 6 / 7;
int h = m_capability.screenHeight - y;
presignText.Bounds = new Rectangle(0, 0, m_capability.screenWidth, h);
m_btns[0].Bounds = new Rectangle(0, y, w1, h);
m_btns[1].Bounds = new Rectangle(w1, y, w2, h);
m_btns[2].Bounds = new Rectangle(w1 + w2, y, w3, h);
}
else
{
// The STU-300 is very shallow, so it is better to utilise
// the buttons to the side of the display instead.
int x = m_capability.screenWidth * 3 / 4;
int w = m_capability.screenWidth - x;
int h2 = m_capability.screenHeight / 3;
int h3 = m_capability.screenHeight / 3;
int h1 = m_capability.screenHeight - h2 - h3;
m_btns[0].Bounds = new Rectangle(x, 0, w, h1);
m_btns[1].Bounds = new Rectangle(x, h1, w, h2);
m_btns[2].Bounds = new Rectangle(x, h1 + h2, w, h3);
}
m_btns[0].Text = "Aceptar";
m_btns[1].Text = "Borrar";
m_btns[2].Text = "Cancelar";
m_btns[0].Click = new EventHandler(btnOk_Click);
m_btns[1].Click = new EventHandler(btnClear_Click);
m_btns[2].Click = new EventHandler(btnCancel_Click);
// Disable color if the STU-520 bulk driver isn't installed.
// This isn't necessary, but uploading colour images with out the driver
// is very slow.
// Calculate the encodingMode that will be used to update the image
ushort idP = m_tablet.getProductId();
wgssSTU.encodingFlag encodingFlag = (wgssSTU.encodingFlag)protocolHelper.simulateEncodingFlag(idP, 0);
bool useColor = false;
if ((encodingFlag & (wgssSTU.encodingFlag.EncodingFlag_16bit | wgssSTU.encodingFlag.EncodingFlag_24bit)) != 0)
{
if (m_tablet.supportsWrite())
useColor = true;
}
if ((encodingFlag & wgssSTU.encodingFlag.EncodingFlag_24bit) != 0)
{
m_encodingMode = m_tablet.supportsWrite() ? wgssSTU.encodingMode.EncodingMode_24bit_Bulk : wgssSTU.encodingMode.EncodingMode_24bit;
}
else if ((encodingFlag & wgssSTU.encodingFlag.EncodingFlag_16bit) != 0)
{
m_encodingMode = m_tablet.supportsWrite() ? wgssSTU.encodingMode.EncodingMode_16bit_Bulk : wgssSTU.encodingMode.EncodingMode_16bit;
}
else
{
// assumes 1bit is available
m_encodingMode = wgssSTU.encodingMode.EncodingMode_1bit;
}
// Size the bitmap to the size of the LCD screen.
// This application uses the same bitmap for both the screen and client (window).
// However, at high DPI, this bitmap will be stretch and it would be better to
// create individual bitmaps for screen and client at native resolutions.
m_bitmap = new Bitmap(m_capability.screenWidth, m_capability.screenHeight, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
{
Graphics gfx = Graphics.FromImage(m_bitmap);
gfx.Clear(Color.White);
// Uses pixels for units as DPI won't be accurate for tablet LCD.
Font font = new Font(FontFamily.GenericSansSerif, m_btns[0].Bounds.Height / 2F, GraphicsUnit.Pixel);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
if (useColor)
{
gfx.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
}
else
{
// Anti-aliasing should be turned off for monochrome devices.
gfx.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixel;
}
gfx.DrawRectangle(Pens.Black, presignText.Bounds);
gfx.DrawString(presignText.Text, font, Brushes.Black, presignText.Bounds, sf);
// Draw the buttons
for (int i = 0; i < m_btns.Length; ++i)
{
if (useColor)
{
gfx.FillRectangle(Brushes.LightGray, m_btns[i].Bounds);
}
gfx.DrawRectangle(Pens.Black, m_btns[i].Bounds);
gfx.DrawString(m_btns[i].Text, font, Brushes.Black, m_btns[i].Bounds, sf);
}
gfx.Dispose();
font.Dispose();
// Finally, use this bitmap for the window background.
this.BackgroundImage = m_bitmap;
this.BackgroundImageLayout = ImageLayout.Stretch;
}
// Now the bitmap has been created, it needs to be converted to device-native
// format.
{
// Unfortunately it is not possible for the native COM component to
// understand .NET bitmaps. We have therefore convert the .NET bitmap
// into a memory blob that will be understood by COM.
System.IO.MemoryStream stream = new System.IO.MemoryStream();
m_bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
m_bitmapData = (byte[])protocolHelper.resizeAndFlatten(stream.ToArray(), 0, 0, (uint)m_bitmap.Width, (uint)m_bitmap.Height, m_capability.screenWidth, m_capability.screenHeight, (byte)m_encodingMode, wgssSTU.Scale.Scale_Fit, 0, 0);
protocolHelper = null;
stream.Dispose();
}
// If you wish to further optimize image transfer, you can compress the image using
// the Zlib algorithm.
bool useZlibCompression = false;
if (!useColor && useZlibCompression)
{
// m_bitmapData = compress_using_zlib(m_bitmapData); // insert compression here!
m_encodingMode |= wgssSTU.encodingMode.EncodingMode_Zlib;
}
// Calculate the size and cache the inking pen.
SizeF s = this.AutoScaleDimensions;
float inkWidthMM = 0.7F;
m_penInk = new Pen(Color.DarkBlue, inkWidthMM / 25.4F * ((s.Width + s.Height) / 2F));
m_penInk.StartCap = m_penInk.EndCap = System.Drawing.Drawing2D.LineCap.Round;
m_penInk.LineJoin = System.Drawing.Drawing2D.LineJoin.Round;
// Add the delagate that receives pen data.
m_tablet.onPenData += new wgssSTU.ITabletEvents2_onPenDataEventHandler(onPenData);
m_tablet.onGetReportException += new wgssSTU.ITabletEvents2_onGetReportExceptionEventHandler(onGetReportException);
// Initialize the screen
clearScreen();
// Enable the pen data on the screen (if not already)
m_tablet.setInkingMode(0x01);
}
