/// <summary>
///
/// </summary>
/// <param name="tFlow"></param>
private void SetImageSize(imageExtension tFlow)
{
switch (tFlow)
{
#region imageExtensionVertical
case imageExtension.Vertical:
{
float maxHeight = 0;
Bitmap _dummyImg = new Bitmap(1, 1);
Graphics _dummyG = Graphics.FromImage(_dummyImg);
Size temp = qrSize;
foreach (var textItem in textLines)
{
if (String.IsNullOrEmpty(textItem.textData) == false)
{
SizeF measure = _dummyG.MeasureString(textItem.textData, textItem.fontStyle);
maxHeight += measure.Height;
if (temp.Width < (int)measure.Width)
{
temp.Width = (int)(measure.Width);
}
}
}
temp.Height += (int)(Math.Round((maxHeight / imgStep), MidpointRounding.AwayFromZero) * imgStep);
if (resizeFont)
temp.Width = qrSize.Width;
imgSize = temp;
break;
}
#endregion
#region imageExtensionHorizontal
case imageExtension.Horizontal:
{
float totalHeight = 0;
float maxWidth = 0;
Bitmap _dummyImg = new Bitmap(1, 1);
Graphics _dummyG = Graphics.FromImage(_dummyImg);
Size temp = qrSize;
foreach (var textItem in textLines)
{
if (String.IsNullOrEmpty(textItem.textData) == false)
{
//tempWidth = _dummyG.MeasureString(textItem.textData, textItem.fontStyle).Width;
//if (tempWidth > maxWidth)
//{
// maxWidth = tempWidth;
//}
SizeF measure = _dummyG.MeasureString(textItem.textData, textItem.fontStyle);
if (measure.Width > maxWidth)
{
maxWidth = measure.Width;
}
totalHeight += measure.Height;
}
}
temp.Width += (int)(Math.Round((maxWidth / imgStep), MidpointRounding.AwayFromZero) * imgStep);
if (totalHeight > temp.Height)
{
temp.Height = (int)(Math.Round((totalHeight / imgStep), MidpointRounding.AwayFromZero) * imgStep);
}
imgSize = temp;
break;
}
#endregion
default:
break;
}
}
/// <summary>
///
/// </summary>
/// <param name="flow"></param>
private void SetFontSize(imageExtension flow)
{
float _fontSize;
Bitmap _dummyImg;
Graphics _dummyG;
_dummyImg = new Bitmap(1, 1);
_dummyG = Graphics.FromImage(_dummyImg);
if (resizeFont)
{
switch (flow)
{
case imageExtension.Horizontal:
{
float maxTextHeight = 0;
foreach (var textItem in textLines)
{
SizeF _stringSize = _dummyG.MeasureString(textItem.textData, textItem.fontStyle);
maxTextHeight += _stringSize.Height;
textItem.pxDimensions = _stringSize;
}
while (maxTextHeight > qrSize.Height)
{
maxTextHeight = 0;
foreach (var textItem in textLines)
{
_fontSize = textItem.fontStyle.Size;
_fontSize -= (float)0.1;
if (_fontSize < 0.5)
throw new ArgumentException("Too many text lines to render with " + qrSize.Height + "px QR-Code" + "\n Cannot use a smaller font size\n");
textItem.fontStyle = new Font(textItem.fontStyle.FontFamily, _fontSize, textItem.fontStyle.Style);
SizeF _stringSize = _dummyG.MeasureString(textItem.textData, textItem.fontStyle);
textItem.pxDimensions = _stringSize;
maxTextHeight += _stringSize.Height;
}
}
}
break;
case imageExtension.Vertical:
foreach (var textItem in textLines)
{
_fontSize = textItem.fontStyle.Size;
SizeF _stringSize = _dummyG.MeasureString(textItem.textData, textItem.fontStyle);
while (_stringSize.Width > qrSize.Width)
{
_fontSize -= (float)0.1;
if (_fontSize < 0.5)
{
throw new ArgumentException("Text line too long to render with " + qrSize.Height + "px QR-Code" + "\n Cannot use a smaller font size\n");
}
textItem.fontStyle = new Font(textItem.fontStyle.FontFamily, _fontSize, textItem.fontStyle.Style);
_stringSize = _dummyG.MeasureString(textItem.textData, textItem.fontStyle);
}
textItem.pxDimensions = _stringSize;
}
break;
default:
break;
}
}
else
{
foreach (var textItem in textLines)
{
SizeF _stringSize = _dummyG.MeasureString(textItem.textData, textItem.fontStyle);
textItem.pxDimensions = _stringSize;
}
}
}
