/// <summary>
/// Renders the matrix in an Encapsuled PostScript format.
/// </summary>
/// <param name="matrix">The matrix to be rendered</param>
/// <param name="stream">Output stream that must be writable</param>
/// <remarks></remarks>
public void WriteToStream(BitMatrix matrix, Stream stream)
{
using (var writer = new StreamWriter(stream))
{
int width = matrix == null ? 21 : matrix.Width;
DrawingSize drawingSize = m_iSize.GetSize(width);
OutputHeader(drawingSize, writer);
OutputBackground(writer);
if (matrix != null)
{
switch (m_DrawingTechnique)
{
case EpsModuleDrawingTechnique.Squares:
DrawSquares(matrix, writer);
break;
case EpsModuleDrawingTechnique.Image:
DrawImage(matrix, writer);
break;
default:
throw new ArgumentOutOfRangeException("DrawingTechnique");
}
}
OutputFooter(writer);
}
}
/// <summary>
/// Outputs the EPS header with mandatory declarations, variable declarations and function definitions.
/// </summary>
/// <param name="drawingSize">Size of the drawing.</param>
/// <param name="stream">Output text stream</param>
/// <remarks></remarks>
private void OutputHeader(DrawingSize drawingSize, StreamWriter stream)
{
string strHeader =
@"%!PS-Adobe-3.0 EPSF-3.0
%%Creator: Gma.QrCodeNet
%%Title: QR Code
%%CreationDate: {0:yyyyMMdd}
%%Pages: 1
%%BoundingBox: 0 0 {1} {2}
%%Document-Fonts: Times-Roman
%%LanguageLevel: 1
%%EndComments
%%BeginProlog
/w {{ {3} }} def
/h {{ {4} }} def
/q {{ {5} }} def
/s {{ {6} }} def
/W {{ w q q add add }} def
/H {{ h q q add add }} def";
string strBoxFunctions =
@"% Define the box functions taking X and Y coordinates of the top left corner and filling a 1 point large square
/b { newpath moveto 1 0 rlineto 0 1 rlineto -1 0 rlineto closepath fill } def
/br { newpath moveto 1.01 0 rlineto 0 1 rlineto -1.01 0 rlineto closepath fill } def
/bb { newpath moveto 1 0 rlineto 0 1.01 rlineto -1 0 rlineto closepath fill } def
/brb { newpath moveto 1.01 0 rlineto 0 1 rlineto -0.01 0 rlineto 0 0.01 rlineto -1 0 rlineto closepath fill } def";
string strHeaderEnd =
@"%%EndProlog
%%Page: 1 1
% Save the current state
save
% Invert the Y axis
0 W s mul translate
s s neg scale";
stream.WriteLine(string.Format(strHeader,
DateTime.UtcNow,
// Use invariant culture to ensure that the dot is used as the decimal separator
(drawingSize.CodeWidth).ToString(CultureInfo.InvariantCulture.NumberFormat),
// Size in points of the matrix with the quiet zone
(drawingSize.CodeWidth).ToString(CultureInfo.InvariantCulture.NumberFormat),
drawingSize.CodeWidth / drawingSize.ModuleSize -
((int)drawingSize.QuietZoneModules * 2),
// Number of modules of the matrix without the quiet zone
drawingSize.CodeWidth / drawingSize.ModuleSize -
((int)drawingSize.QuietZoneModules * 2),
(int)drawingSize.QuietZoneModules, // Number of quiet zone modules
drawingSize.ModuleSize.ToString(CultureInfo.InvariantCulture.NumberFormat)));
// Size in points of a single module
if (m_DrawingTechnique == EpsModuleDrawingTechnique.Squares)
{
stream.WriteLine(strBoxFunctions);
}
stream.WriteLine(strHeaderEnd);
}
/// <summary>
/// Writes to bitmap source.
/// </summary>
/// <param name="QrMatrix">The qr matrix.</param>
/// <param name="DPI">The DPI.</param>
/// <returns></returns>
/// <remarks></remarks>
public BitmapSource WriteToBitmapSource(BitMatrix QrMatrix, Point DPI)
{
int width = QrMatrix == null ? 21 : QrMatrix.Width;
DrawingSize dSize = m_ISize.GetSize(width);
var quietZone = (int)dSize.QuietZoneModules;
GeometryDrawing quietZoneDrawing = ConstructQZDrawing(2 * quietZone + width);
GeometryDrawing qrDrawing = ConstructQrDrawing(QrMatrix, quietZone, quietZone);
var qrGroup = new DrawingGroup();
qrGroup.Children.Add(quietZoneDrawing);
qrGroup.Children.Add(qrDrawing);
DrawingBrush qrBrush = ConstructDrawingBrush(qrGroup);
PixelFormat pixelFormat = PixelFormats.Pbgra32;
var renderbmp = new RenderTargetBitmap(dSize.CodeWidth, dSize.CodeWidth, DPI.X, DPI.Y, pixelFormat);
var drawingVisual = new DrawingVisual();
using (DrawingContext dContext = drawingVisual.RenderOpen())
{
dContext.DrawRectangle(qrBrush, null,
new Rect(0, 0, (dSize.CodeWidth / DPI.X) * 96, (dSize.CodeWidth / DPI.Y) * 96));
}
renderbmp.Render(drawingVisual);
return(renderbmp);
}
/// <summary>
/// Saves QrCode Image to specified stream in the specified format
/// </summary>
/// <param name="QrMatrix">The qr matrix.</param>
/// <param name="imageFormat">The image format.</param>
/// <param name="stream">The stream.</param>
/// <param name="DPI">The DPI.</param>
/// <exception cref="ArgumentNullException">Stream or Format is null</exception>
///
/// <exception cref="ExternalException">The image was saved with the wrong image format</exception>
/// <remarks>You should avoid saving an image to the same stream that was used to construct. Doing so might damage the stream
/// If any additional data has been written to the stream before saving the image, the image data in the stream will be corrupted</remarks>
public void WriteToStream(BitMatrix QrMatrix, ImageFormat imageFormat, Stream stream, Point DPI)
{
if (imageFormat == ImageFormat.Emf || imageFormat == ImageFormat.Wmf)
{
CreateMetaFile(QrMatrix, stream);
}
else if (imageFormat != ImageFormat.Exif &&
imageFormat != ImageFormat.Icon &&
imageFormat != ImageFormat.MemoryBmp)
{
DrawingSize size = m_iSize.GetSize(QrMatrix == null ? 21 : QrMatrix.Width);
using (var bitmap = new Bitmap(size.CodeWidth, size.CodeWidth))
{
if (DPI.X != 96 || DPI.Y != 96)
{
bitmap.SetResolution(DPI.X, DPI.Y);
}
using (Graphics graphics = Graphics.FromImage(bitmap))
{
Draw(graphics, QrMatrix);
bitmap.Save(stream, imageFormat);
}
}
}
}
/// <summary>
/// Drawing Bitmatrix to winform graphics.
/// </summary>
/// <param name="graphics">The graphics.</param>
/// <param name="QrMatrix">Draw background only for null matrix</param>
/// <param name="offset">The offset.</param>
/// <exception cref="ArgumentNullException">DarkBrush or LightBrush is null</exception>
/// <remarks></remarks>
public void Draw(Graphics graphics, BitMatrix QrMatrix, Point offset)
{
int width = QrMatrix == null ? 21 : QrMatrix.Width;
DrawingSize size = m_iSize.GetSize(width);
graphics.FillRectangle(m_LightBrush, offset.X, offset.Y, size.CodeWidth, size.CodeWidth);
if (QrMatrix == null || size.ModuleSize == 0)
{
return;
}
int padding = (size.CodeWidth - (size.ModuleSize * width)) / 2;
int preX = -1;
for (int y = 0; y < width; y++)
{
for (int x = 0; x < width; x++)
{
if (QrMatrix[x, y])
{
//Set start point if preX == -1
if (preX == -1)
{
preX = x;
}
//If this is last module in that row. Draw rectangle
if (x == width - 1)
{
var modulePosition = new Point(preX * size.ModuleSize + padding + offset.X,
y * size.ModuleSize + padding + offset.Y);
var rectSize = new Size((x - preX + 1) * size.ModuleSize, size.ModuleSize);
graphics.FillRectangle(m_DarkBrush, modulePosition.X, modulePosition.Y, rectSize.Width,
rectSize.Height);
preX = -1;
}
}
else if (!QrMatrix[x, y] && preX != -1)
{
//Here will be first light module after sequence of dark module.
//Draw previews sequence of dark Module
var modulePosition = new Point(preX * size.ModuleSize + padding + offset.X,
y * size.ModuleSize + padding + offset.Y);
var rectSize = new Size((x - preX) * size.ModuleSize, size.ModuleSize);
graphics.FillRectangle(m_DarkBrush, modulePosition.X, modulePosition.Y, rectSize.Width,
rectSize.Height);
preX = -1;
}
}
}
}
/// <summary>
/// Writes to stream.
/// </summary>
/// <param name="qrMatrix">The qr matrix.</param>
/// <param name="imageFormat">The image format.</param>
/// <param name="stream">The stream.</param>
/// <remarks></remarks>
public void WriteToStream(BitMatrix qrMatrix, ImageFormatEnum imageFormat, Stream stream)
{
DrawingSize dSize = ISize.GetSize(qrMatrix == null ? 21 : qrMatrix.Width);
var wBitmap = new WriteableBitmap(dSize.CodeWidth, dSize.CodeWidth, 96, 96, PixelFormats.Gray8, null);
Draw(wBitmap, qrMatrix);
BitmapEncoder encoder = imageFormat.ChooseEncoder();
encoder.Frames.Add(BitmapFrame.Create(wBitmap));
encoder.Save(stream);
}
/// <summary>
/// Draw QrCode at given writeable bitmap at offset location
/// </summary>
/// <param name="wBitmap">The w bitmap.</param>
/// <param name="matrix">The matrix.</param>
/// <param name="offsetX">The offset X.</param>
/// <param name="offsetY">The offset Y.</param>
/// <remarks></remarks>
public void Draw(WriteableBitmap wBitmap, BitMatrix matrix, int offsetX, int offsetY)
{
DrawingSize size = matrix == null?ISize.GetSize(21) : ISize.GetSize(matrix.Width);
if (wBitmap == null)
{
wBitmap = new WriteableBitmap(size.CodeWidth + offsetX, size.CodeWidth + offsetY, 96, 96,
PixelFormats.Gray8, null);
}
else if (wBitmap.PixelHeight == 0 || wBitmap.PixelWidth == 0)
{
return; //writeablebitmap contains no pixel.
}
DrawQuietZone(wBitmap, size.CodeWidth, offsetX, offsetY);
if (matrix == null)
{
return;
}
DrawDarkModule(wBitmap, matrix, offsetX, offsetY);
}
/// <summary>
/// Draw qrCode dark modules at given position. (It will also include quiet zone area. Set it to zero to exclude quiet zone)
/// </summary>
/// <param name="wBitmap">The w bitmap.</param>
/// <param name="matrix">The matrix.</param>
/// <param name="offsetX">The offset X.</param>
/// <param name="offsetY">The offset Y.</param>
/// <exception cref="ArgumentNullException">Bitmatrix, wBitmap should not equal to null</exception>
///
/// <exception cref="ArgumentOutOfRangeException">wBitmap's pixel width or height should not equal to zero</exception>
/// <remarks></remarks>
public void DrawDarkModule(WriteableBitmap wBitmap, BitMatrix matrix, int offsetX, int offsetY)
{
if (matrix == null)
{
throw new ArgumentNullException("Bitmatrix");
}
DrawingSize size = ISize.GetSize(matrix.Width);
if (wBitmap == null)
{
throw new ArgumentNullException("wBitmap");
}
else if (wBitmap.PixelHeight == 0 || wBitmap.PixelWidth == 0)
{
throw new ArgumentOutOfRangeException("wBitmap",
"WriteableBitmap's pixelHeight or PixelWidth are equal to zero");
}
int padding = (size.CodeWidth - size.ModuleSize * matrix.Width) / 2;
int preX = -1;
int moduleSize = size.ModuleSize;
if (moduleSize == 0)
{
return;
}
for (int y = 0; y < matrix.Width; y++)
{
for (int x = 0; x < matrix.Width; x++)
{
if (matrix[x, y])
{
if (preX == -1)
{
preX = x;
}
if (x == matrix.Width - 1)
{
var moduleArea =
new Int32Rect(preX * moduleSize + padding + offsetX,
y * moduleSize + padding + offsetY,
(x - preX + 1) * moduleSize,
moduleSize);
wBitmap.FillRectangle(moduleArea, DarkColor);
preX = -1;
}
}
else if (preX != -1)
{
var moduleArea =
new Int32Rect(preX * moduleSize + padding + offsetX,
y * moduleSize + padding + offsetY,
(x - preX) * moduleSize,
moduleSize);
wBitmap.FillRectangle(moduleArea, DarkColor);
preX = -1;
}
}
}
}
