How can i change the position of the "hello and test" string in the green box to the center position in an image ? I want to place the position of the hello string and the test in the middle of an image (which I marked the red circle), the link to the image> https://cdn.pbrd.co/images/I1hTWNS.png
I have added a "center" alignment but the position of the string is still to the left of the image.
public void drawString()
{
string firstText = "Hello" + Environment.NewLine + "Test";
string imageFilePath = directory + name + "\\Desktop\\plain.jpg";
Bitmap newBitmap;
using (var bitmap = (Bitmap)Image.FromFile(imageFilePath))//load the image file
{
using (Graphics graphics = Graphics.FromImage(bitmap))
{
using (Font arialFont = new Font("Arial", 26, FontStyle.Bold, GraphicsUnit.Point))
{
Rectangle rect = new Rectangle(0, 0, ClientSize.Width - 10, ClientSize.Height - 10);
StringFormat sf = new StringFormat();
sf.LineAlignment = StringAlignment.Center;
sf.Alignment = StringAlignment.Center;
graphics.DrawString(firstText, arialFont, Brushes.Red, rect, sf);
graphics.DrawRectangle(Pens.Green, rect);
}
}
newBitmap = new Bitmap(bitmap);
}
newBitmap.Save(imageFilePath);//save the image file
newBitmap.Dispose();
}
I have added a "center" alignment but the position of the string is still to the left of the image.
You text is indeed centered in the rectangle you created. The problem is that the rectangle you based it off the ClientSize Height and Width which come from the control you are inside.
What you want to use is the current Bitmap properties for Height and Width.
instead of :
Rectangle rect = new Rectangle(0, 0, ClientSize.Width - 10, ClientSize.Height - 10);
you want :
Rectangle rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
Related
I drawing a rectangle with a dynamic number as a string on it and use it for a windows taskbar icon (overlay icon):
private void DrawOverlayIcon(string queue_count) {
Bitmap bitmap = new Bitmap(30, 30, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bitmap);
g.FillRectangle(System.Drawing.Brushes.White, 0, 0, 30, 30);
Rectangle r = new Rectangle(0, 0, 30, 30);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center; // horizontal
sf.LineAlignment = StringAlignment.Center; // vertikal
Font f = new Font("Arial", 14, System.Drawing.FontStyle.Bold);
g.DrawString(queue_count, f, System.Drawing.Brushes.Black, r, sf);
IntPtr hBitmap = bitmap.GetHbitmap();
ImageSource wpfBitmap = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
_icon_overlay = wpfBitmap;
So far so good. But when a user set up the windows zoom function to maybe 120% or 150% the number becomes so large that it is only displayed as one digit.
Can anyone help?
Thanks a lot.
I want to combine two image but I cant success . Help me please.
When try the combine PictureBox show only first image but there is not second image , when I remove first image I can see second image.
Also I tried setting first image and draw the text on image that's also not working. Please help.
Image myimg = Code128Rendering.MakeBarcodeImage(textBox1.Text, 2, true);
Bitmap image = new Bitmap(myimg.Width + 20, myimg.Height + 50);
pictureBox1.DrawToBitmap(image, new Rectangle(0, 0, myimg.Width + 20, myimg.Height + 50));
Bitmap bmp = new Bitmap(myimg.Width + 20, myimg.Height);
Bitmap bmp2 = new Bitmap(myimg.Width + 20, 20);
Graphics Cizgi2 = Graphics.FromImage(bmp2);
Graphics Cizgi = Graphics.FromImage(bmp);
Cizgi.DrawImage(myimg, 0, 0);
FontStyle sitil = FontStyle.Bold;
Font fonts = new Font(new FontFamily("Arial"), 10, sitil);
Cizgi2.DrawString(textBox1.Text, fonts, Brushes.Black, 5, myimg.Height + 10);
Graphics g = Graphics.FromImage(image);
g.DrawImage(bmp, new Point(10, 0));
g.DrawImage(bmp2, new Point(0, bmp.Height + 10));
I want to image seems like first but i cant make
It looks like you are trying to concatenate two images vertically? It's pretty simple actually, you can look here (C# image concatenation), but I've also modified it for your needs. I think this should work:
float drawBorderX = 5;
float drawBorderY = 5;
//Set up our two images
Bitmap barCode = Code128Rendering.MakeBarcodeImage(textBox1.Text, 2, true);
Bitmap text = new Bitmap(barCode.Width, 50);
Graphics textGraphics = Graphics.FromImage(text);
//Draw the text to the bottom image.
FontStyle sitil = FontStyle.Bold;
Font fonts = new Font(new FontFamily("Arial"), 10, sitil);
textGraphics.FillRectangle(new SolidBrush(Color.White), new Rectangle(0, 0, text.Width, text.Height));
textGraphics.DrawString(textBox1.Text, fonts, Brushes.Black, drawBorderX, drawBorderY);
//Vertically concatenate the two images.
Bitmap resultImage = new Bitmap(Math.Max(barCode.Width, text.Width), barCode.Height + text.Height);
Graphics g = Graphics.FromImage(resultImage);
g.DrawImage(barCode, 0, 0);
g.DrawImage(text, 0, barCode.Height);
Edit: Note that resultImage will contain the image you want, so you can set your PictureBox to be that image at the end.
I use the function below to draw a string on an image. It words great for the most part when I draw a string using one color.
However I want to have a word be in a different color. For example I want to draw "This is a TEST", I want TEST to be red.
What accomplish this using this method?
System.Drawing.Image newImg = new System.Drawing.Bitmap(500, 500);
pictureBox1.Image = TextOverlay(newImg, "This is a TEST", this.Font, Color.Black, ContentAlignment.MiddleCenter, 0.6F);
I'm referring to this line of code and not the OverlayColor parameter:
g.DrawString(OverlayText, f, b, rect, strFormat);
Here is the complete function:
public static Bitmap TextOverlay(Image img, string OverlayText, Font OverlayFont, Color OverlayColor, System.Drawing.ContentAlignment Position, float PercentFill)
{
// create bitmap and graphics used for drawing
// "clone" image but use 24RGB format
Bitmap bmp = new Bitmap(img.Width, img.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bmp);
g.DrawImage(img, 0, 0);
int alpha = 255;
// Create the brush based on the color and alpha
SolidBrush b = new SolidBrush(Color.FromArgb(alpha, OverlayColor));
// Measure the text to render (unscaled, unwrapped)
StringFormat strFormat = StringFormat.GenericTypographic;
SizeF s = g.MeasureString(OverlayText, OverlayFont, 100000, strFormat);
// Enlarge font to specified fill (estimated by AREA)
float zoom = (float)(Math.Sqrt(((double)(img.Width * img.Height) * PercentFill) / (double)(s.Width * s.Height)));
FontStyle sty = OverlayFont.Style;
Font f = new Font(OverlayFont.FontFamily, ((float)OverlayFont.Size) * zoom, sty);
int charFit;
int linesFit;
float SQRTFill = (float)(Math.Sqrt(PercentFill));
strFormat.FormatFlags = StringFormatFlags.NoClip; //|| StringFormatFlags.LineLimit || StringFormatFlags.MeasureTrailingSpaces;
strFormat.Trimming = StringTrimming.Word;
SizeF layout = new SizeF(((float)img.Width) * SQRTFill, ((float)img.Height) * 1.5F); // fit to width, allow height to go over
s = g.MeasureString(OverlayText, f, layout, strFormat, out charFit, out linesFit);
// Determine draw area based on placement
RectangleF rect = new RectangleF((bmp.Width - s.Width) / 2F,
(bmp.Height - s.Height) / 2F,
layout.Width,
((float)img.Height) * SQRTFill);
// Add rendering hint (thx to Thomas)
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
// finally, draw centered text!
g.DrawString(OverlayText, f, b, rect, strFormat);
// clean-up
g.Dispose();
b.Dispose();
f.Dispose();
return bmp;
}
I would like to draw some text in a rectangle and have it scale to the maximum size that fits within the rectangle.
So far I have this:
Bitmap bitmapImage = new Bitmap(500, 500);
Graphics graphicImage = Graphics.FromImage(bitmapImage);
graphicImage.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
var rect = new Rectangle(0, 0, 500, 500);
graphicImage.DrawString( "testing testing 123!", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, rect);
bitmapImage.Save("test.png");
it draws the text but doesn't scale up the font size.
Call Graphics.MeasureString in a binary search loop.
I am using the following code to draw text onto a jpg image but it requires x/y coordinate percision on where to place the text.
var bmp = new Bitmap("C:\\testing\\Given.jpg");
var gra = Graphics.FromImage(bmp);
var text = "The Berman's";
var font = new Font("Segoe Script", 24);
var brush = Brushes.Orange;
var point = new PointF(130, 224);
gra.DrawString(text, font, brush, point);
bmp.Save("C:\\testing\\Custom.jpg");
How would I go about centering text onto an image? I am guessing it would have to do with defining some sort of container (rectangle maybe?) that is the width of the image and centering the text within that? Not sure what the best practice would be for this.
using(var sf = new StringFormat()
{
Alignment = StringAlignment.Center,
LineAlignment = StringAlignment.Center,
})
{
gra.DrawString(text, font, brush, new Rectangle(0, 0, bmp.Width, bmp.Height), sf);
}