I have made a Windows Form application and I want to generate a delivery note with a barcode. I have embed the barcode font, but I get an error. See this question: Embed Barcode in C# PDF Library
Now, I want to make an image from the barcode and embed this image on my delivery note. I have searched on Google for doing this, and I found the following code:
private Image DrawBarcodeAfleverbonImage(String text)
{
Font barcodeFont = new Font("Bar-Code 39", 31, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
//Font barcodeFont = new Font("Arial", 31, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
//first, create a dummy bitmap just to get a graphics object
Image img = new Bitmap(1, 1);
Graphics drawing = Graphics.FromImage(img);
//measure the string to see how big the image needs to be
SizeF textSize = drawing.MeasureString(text, barcodeFont);
//free up the dummy image and old graphics object
img.Dispose();
drawing.Dispose();
//create a new image of the right size
img = new Bitmap((int)textSize.Width, (int)textSize.Height);
drawing = Graphics.FromImage(img);
//create a brush for the text
Brush textBrush = new SolidBrush(Color.Black);
drawing.DrawString(text, barcodeFont, textBrush, 0, 0);
drawing.Save();
img.Save(#"C:\Users\Marten\Documents\test.png");
textBrush.Dispose();
drawing.Dispose();
return img;
If I run my program an image will be created. There is just one problem: the barcode font is too thick, so I can not scan:
What is wrong?
You need to set a background color before drawing your text:
drawing.Clear(Color.White);
drawing.DrawString(text, barcodeFont, textBrush, 0, 0);
Or if you want a transparent background you need to turn off font smoothing.
drawing.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixel;
drawing.DrawString(text, barcodeFont, textBrush, 0, 0);
Related
Generate an Image From Text
public Image DrawText(String text, Font font, Color textColor, Color backColor)
{
//first, create a dummy bitmap just to get a graphics object
Image img = new Bitmap(1, 1);
Graphics drawing = Graphics.FromImage(img);
//measure the string to see how big the image needs to be
SizeF textSize = drawing.MeasureString(text, font);
//free up the dummy image and old graphics object
img.Dispose();
drawing.Dispose();
//create a new image of the right size
img = new Bitmap((int)textSize.Width, (int)textSize.Height);
drawing = Graphics.FromImage(img);
//paint the background
drawing.Clear(backColor);
//create a brush for the text
Brush textBrush = new SolidBrush(textColor);
drawing.DrawString(text, font, textBrush, 0, 0);
drawing.Save();
textBrush.Dispose();
drawing.Dispose();
return img;
}
And Callback
Font font = new Font("Arial", 20, FontStyle.Bold);
Color color = Color.FromArgb(255, 0, 0); //Red
Color background = Color.Transparent; //None Color
Image img = DrawText("Hoàng Long", font, color, background);
img.Save(context.Response.OutputStream, ImageFormat.Jpeg);
Tried:How to generate an image from text on fly at runtime
Please help me
Disclaimer: this code will create a white background. Not an Transparent. To make it Transparent you need to change this
var image = DrawTextImage(TextForImage, font, Color.Black, Color.Transparent);
public class TextToImage
{
// main method you need to call.
public byte[] GetImageFromText(string TextForImage)
{
FontFamily fontFamily = new FontFamily("Arial");
Font font = new Font(fontFamily, 40.0f);
var image = DrawTextImage(TextForImage, font, Color.Black, Color.Transparent);
var imgData = ImageToByteArray(image);
return imgData;
}
// convert image to byte array
private byte[] ImageToByteArray(System.Drawing.Image imageIn)
{
MemoryStream ms = new MemoryStream();
imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
return ms.ToArray();
}
private Image DrawTextImage(String text, Font font, Color textColor, Color backColor)
{
return DrawTextImage(text, font, textColor, backColor, new Size(500, 500));
}
// create image
private Image DrawTextImage(String text, Font font, Color textColor, Color backColor, Size minSize)
{
//first, create a dummy bitmap just to get a graphics object
SizeF textSize;
using (Image img = new Bitmap(1, 1))
{
using (Graphics drawing = Graphics.FromImage(img))
{
//measure the string to see how big the image needs to be
textSize = drawing.MeasureString(text, font);
if (!minSize.IsEmpty)
{
textSize.Width = textSize.Width > minSize.Width ? textSize.Width : minSize.Width;
textSize.Height = textSize.Height > minSize.Height ? textSize.Height : minSize.Height;
}
}
}
//create a new image of the right size
//Image retImg = new Bitmap((int)textSize.Width, (int)textSize.Height);
Image retImg = new Bitmap(500, 500);
using (var drawing = Graphics.FromImage(retImg))
{
//paint the background
drawing.Clear(backColor);
//create a brush for the text
using (Brush textBrush = new SolidBrush(textColor))
{
drawing.TextRenderingHint = TextRenderingHint.AntiAlias;
RectangleF rectF1 = new RectangleF(10, 10, 490, 490);
drawing.DrawString(text, font, textBrush, rectF1);
drawing.Save();
}
}
return retImg;
}
}
I think above code is self explanatory. you just create an instance of this helper class and pass text param.
TextToImage textToImage = new TextToImage();
byte[] byteArr = textToImage.GetImageFromText("some text to create image out of it");
Hope this helps. :)
I'm looking to expand my 'simple' photography events system to add the ability to add custom text to images we've shot. I technically have this aspect working using the existing picturebox control to display the image and a text box in which text can be entered and this will be added to the image being displayed.
However, being a photographer, I'd like the text to look a little nicer and as such am looking to emulate what I can do in Photoshop, i.e. bevel/emboss, add inner glows and drop shadows to this text but I'm struggling to find any references to this.
I may be simply limited by the fact I'm using winforms and this may have been achievable via WPF, but WPF wasn't about when I stopped being a programmer for a profession and as such stuck to technology I knew... I'm also far too far down the line in the system to re-write it all in WPF, so if its a limitation I'll just look at adding in pre-determined overlays rather than custom text which I know I can achieve.
The code I have so far is as follows and any tips on how to expand this to perform the bevel/emboss, glows etc would be much appreciated.
public static Bitmap addTexttoImage(string imagename, string textnya)
{
float fontSize = 80;
string imagepath = imagename;
Image image = Image.FromStream(new MemoryStream(File.ReadAllBytes(imagepath)));
//read the image we pass
Bitmap bmp = (Bitmap)Image.FromFile(imagepath);
Graphics g = Graphics.FromImage(bmp);
//this will centre align our text at the bottom of the image
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Far;
//define a font to use.
Font f = new Font("Impact", fontSize, FontStyle.Bold, GraphicsUnit.Pixel);
//pen for outline - set width parameter
Pen p = new Pen(ColorTranslator.FromHtml("#77090C"), 8);
p.LineJoin = LineJoin.Round; //prevent "spikes" at the path
//this makes the gradient repeat for each text line
Rectangle fr = new Rectangle(0, bmp.Height - f.Height, bmp.Width, f.Height);
LinearGradientBrush b = new LinearGradientBrush(fr,
ColorTranslator.FromHtml("#FF6493"),
ColorTranslator.FromHtml("#D00F14"),
90);
//this will be the rectangle used to draw and auto-wrap the text.
//basically = image size
Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
GraphicsPath gp = new GraphicsPath();
gp.AddString(textnya, f.FontFamily, (int)FontStyle.Bold, fontSize, r, sf);
g.SmoothingMode = SmoothingMode.AntiAlias;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.DrawPath(p, gp);
g.FillPath(b, gp);
//cleanup
gp.Dispose();
b.Dispose();
b.Dispose();
f.Dispose();
sf.Dispose();
g.Dispose();
return bmp;
}
I need to convert text into an image. Does anyone know if I can use the creative version of imageresizer.net to do this?
I have searched a lot but haven't found anything to confirm or deny imageresizer can do this.
Why use imagerezier when you can do it with c# out-of-box? From https://stackoverflow.com/a/2070493/1224069:
private Image DrawText(String text, Font font, Color textColor, Color backColor)
{
//first, create a dummy bitmap just to get a graphics object
Image img = new Bitmap(1, 1);
Graphics drawing = Graphics.FromImage(img);
//measure the string to see how big the image needs to be
SizeF textSize = drawing.MeasureString(text, font);
//free up the dummy image and old graphics object
img.Dispose();
drawing.Dispose();
//create a new image of the right size
img = new Bitmap((int) textSize.Width, (int)textSize.Height);
drawing = Graphics.FromImage(img);
//paint the background
drawing.Clear(backColor);
//create a brush for the text
Brush textBrush = new SolidBrush(textColor);
drawing.DrawString(text, font, textBrush, 0, 0);
drawing.Save();
textBrush.Dispose();
drawing.Dispose();
return img;
}
i want to add an additonal height to an Image to give it a subtitle.
I do not want to "compres" or resize my original image.
I want to keep it's size and add +40 px to its height on bottom and add a text like this example
The red part is the original image.
The blue part is my addition.
I tried this code but my text appears "outside" the image i think.
Image image = Image.FromFile("D:\\my_sample_image.jpg");
// Create graphics from image
Graphics graphics = Graphics.FromImage(image);
// Create font
Font font = new Font("Times New Roman", 42.0f);
// Create text position
PointF point = new PointF(150, image.Height+40);
// Draw text
graphics.DrawString("Watermark", font, Brushes.Red, point);
// Save image
image.Save("D:\\my_sample_output.jpg");
MessageBox.Show("FINISHED");
// Open generated image file in default image viewer installed in Windows
Process.Start("D:\\my_sample_output.jpg");
Make a new Bitmap, create a Graphics out of it, then draw the old image with room for text at the bottom.
Bitmap image = new Bitmap("path/resource");
Bitmap newImage = new Bitmap(image.Width, image.Height + 40);
using (Graphics g = Graphics.FromImage(newImage))
{
// Draw base image
Rectangle rect = new Rectangle(0, 0, image.Width, image.Height);
g.DrawImageUnscaledAndClipped(image, rect);
//Fill undrawn area
g.FillRectangle(new SolidBrush(Color.Black), 0, image.Height, newImage.Width, 40);
// Create font
Font font = new Font("Times New Roman", 22.0f);
// Create text position (play with positioning)
PointF point = new PointF(0, image.Height);
// Draw text
g.DrawString("Watermark", font, Brushes.Red, point);
}
public Image addSubtitleToImage(string path, int height, string title)
{
Bitmap image = new Bitmap(path);
Bitmap newImage = new Bitmap(image.Width, image.Height + height);
using (Graphics g = Graphics.FromImage(newImage))
{
g.FillRectangle(new SolidBrush(Color.Black), new Rectangle(0, 0, newImage.Width, newImage.Height));
g.DrawImage(image, new Rectangle(0, 0, image.Width, image.Height));
Font font = new Font("Tahoma", 30.0f);
g.DrawString(title, font, Brushes.White, new PointF(image.Width/2 , image.Height+));
}
return newImage;
}
I want to render "Hello dalvir" to image format so that hello dalvir shows in red color in image. How i can do it in C#.
here is code...
Font MyFont = new Font(FontFamily, Font,FontStyle.Bold, GraphicsUnit.Point);
MyGraphics = Graphics.FromImage(bmpImage);
MyGraphics.Clear(Color.FromName("Red"));
MyGraphics.TextRenderingHint = TextRenderingHint.AntiAlias;
MyGraphics.DrawString("Hello dalvir", MyFont,
new SolidBrush(Color.FromName("Red")), 0, 0);
MyGraphics.Flush();