I am currently working on a chat window and have created tiles for messages.
I have a problem because the text in tiles draws using the DrawString method and I`m not really sure if there is any such possibility that this text can be copied? How can it enable the user to select and copy text? Below is part of the source code.
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var graphics = e.Graphics;
...
using (SolidBrush brush = new SolidBrush(this.ForeColor))
{
if (_BoxPosition == BoxPositionEnum.Left)
{
graphics.DrawString(Text, Font, brush, new Rectangle(20 , Height / 2, renderWidth - 5, Height / 2 - 5));
}
else
{
StringFormat format = new StringFormat()
{
LineAlignment = StringAlignment.Center,
Alignment = StringAlignment.Far
};
graphics.DrawString(Text, Font, brush,
new Rectangle(_mc.BoxIndent - 10 , Height / 2, renderWidth - 5, Height / 2 - 5),format);
}
}
For simple: just use TextBox or RichTextBox and set ReadOnly = true and color as what you want.
For more advanced: create your own message box user control, and you can do many thing with it (react, select all, ...).
Here the tutorial for create your own user control: https://www.c-sharpcorner.com/UploadFile/7d3362/user-control-in-C-Sharp/
in my program i have a group box, i didnt like that the groupbx provided in visual studio doesnt have a border colour property so i used this code to create my own group box.
public class MyGroupBox : GroupBox
{
private Color _borderColor = Color.Black;
public Color BorderColor
{
get { return this._borderColor; }
set { this._borderColor = value; }
}
protected override void OnPaint(PaintEventArgs e)
{
//get the text size in groupbox
Size tSize = TextRenderer.MeasureText(this.Text, this.Font);
Rectangle borderRect = e.ClipRectangle;
borderRect.Y = (borderRect.Y + (tSize.Height / 2));
borderRect.Height = (borderRect.Height - (tSize.Height / 2));
ControlPaint.DrawBorder(e.Graphics, borderRect, this._borderColor, ButtonBorderStyle.Solid);
Rectangle textRect = e.ClipRectangle;
textRect.X = (textRect.X + 6);
textRect.Width = tSize.Width;
textRect.Height = tSize.Height;
e.Graphics.FillRectangle(new SolidBrush(this.BackColor), textRect);
e.Graphics.DrawString(this.Text, this.Font, new SolidBrush(this.ForeColor), textRect);
}
}
which works "fine", i got myself a black border group box instead of grey, except when the window is moved the group box glitches out like so,
is there a fix for this or will i have to use the visual studio group box to prevent this issue? i am using C# winforms
The documentation for PaintEventArgs.ClipRectangle is misleading - Gets the rectangle in which to paint.. Actually this property represents the invalidated rectangle of the window, which is not always the full rectangle. It can be used to skip painting of elements that are outside that rectangle, but not as base for painting.
But the base rectangle for all painting should be the ClientRectangle property of the control being painted. So simply replace e.ClipRectangle with this.ClientRectangle.
The system I am working on stamps PDF's with certain information. It does this by creating a lime green text box in the top right corner of the document. It then draws a certain string on top of the green space. This works for thousands of PDFs but for one the text is invisible even though the box is drawn. I can still select the text and copy it to something else, but it is invisible in the PDF.
Unfortunately, I cannot share the PDF but it is a PDF 1.4. What would cause this?
The code for stamping:
private static XGraphics drawString(XGraphics xgr, PdfPage page, string printString, int pageNumber = 0)
{
XFont font = new XFont("Verdana", 10, XFontStyle.BoldItalic);
var textSize = xgr.MeasureString(printString, font);
var width = textSize.Width;
var height = textSize.Height;
double xMin = 0;
double yMin = 0;
if (page.Rotate == 90)
{
xMin = page.Height - textSize.Width;
var state = xgr.Save();
xgr.DrawRectangle(XBrushes.LimeGreen, xMin, yMin, width, height);
xgr.Restore(state);
xgr.DrawString(printString, font, XBrushes.Black, new XRect(0, 0, page.Height, page.Width), topRight());
}
else
{
xMin = page.Width - textSize.Width;
var state = xgr.Save();
xgr.DrawRectangle(XBrushes.LimeGreen, xMin, yMin, width, height);
xgr.Restore(state);
xgr.DrawString(printString, font, XBrushes.Black, new XRect(0, 0, page.Width, page.Height), topRight());
}
return xgr;
}
private static XStringFormat topRight()
{
XStringFormat format = new XStringFormat();
format.Alignment = XStringAlignment.Far;
format.LineAlignment = XLineAlignment.Near;
return format;
}
I have tried using Dipose() on xgr and reinitialising it before each of its draw actions. I have tried saving and restoring the state of xgr between draw actions as seen in the code. I have tried various fonts and font sizes with no luck either.
Let me know what metadata about the PDF is relevant and I will share that.
Using PdfSharp 1.5 GDI, I have been having this issue as well. Some pdfs would be ok, others would have 1 or 2 pages that were ok, and then others would have no pages that were ok. Text could be selected, but text could not be seen. Changing the renderMode fixes the issue.
In PdfGraphicsState.cs, there is a condition to check if _realizedRenderingMode != renderMode. However, _realizedRenderingMode and renderMode is 0 by default, so it never enters codeblock, nor does it look like there is a method for changing the renderMode unless you change the font to italic, bold, strikeout, or underline:
int _realizedRenderingMode; // Reference: TABLE 5.2 Text state operators / Page 398
public void RealizeFont(XFont font, XBrush brush, int renderingMode)
{
const string format = Config.SignificantFigures3;
// So far rendering mode 0 (fill text) and 2 (fill, then stroke text) only.
RealizeBrush(brush, _renderer._colorMode, renderingMode, font.Size); // _renderer.page.document.Options.ColorMode);
// Realize rendering mode.
if (_realizedRenderingMode != renderingMode)
{
_renderer.AppendFormatInt("{0} Tr\n", renderingMode);
_realizedRenderingMode = renderingMode;
}
Removing the condition would suffice in fixing the issue, but the renderingMode seems to only be needed 1 time for the BT (Begin Text) in XGraphicsPdfRenderer.cs.
internal void BeginTextMode()
{
if (_streamMode != StreamMode.Text)
{
_streamMode = StreamMode.Text;
_content.Append("BT\n");
// Text matrix is empty after BT
_gfxState.RealizedTextPosition = new XPoint();
_gfxState.ItalicSimulationOn = false;
}
}
So, I ended up modifying XGraphics to include XGraphicsPdfRendererOptions and passing the variable to the various methods so it can be changed regardless of location:
private XGraphicsPdfRendererOptions _renderOptions { get; set; }
public XGraphicsPdfRendererOptions RenderOptions
{
get
{
if (_renderOptions == null)
{
_renderOptions = new XGraphicsPdfRendererOptions();
}
return _renderOptions;
}
set
{
_renderOptions = value;
}
}
Keep in mind that the renderMode is originally based on whether the font is italic, bold, strikeout, or underline, which I don't really see how those relate to renderMode, in XGraphicsPdfRenderer.cs:
//bool bold = (font.Style & XFontStyle.Bold) != 0;
//bool italic = (font.Style & XFontStyle.Italic) != 0;
bool italicSimulation = (font.GlyphTypeface.StyleSimulations & XStyleSimulations.ItalicSimulation) != 0;
bool boldSimulation = (font.GlyphTypeface.StyleSimulations & XStyleSimulations.BoldSimulation) != 0;
bool strikeout = (font.Style & XFontStyle.Strikeout) != 0;
bool underline = (font.Style & XFontStyle.Underline) != 0;
Realize(font, brush, boldSimulation ? 2 : 0);
Class and enum:
public class XGraphicsPdfRendererOptions
{
public XGraphicsPdfRenderMode RenderMode { get; set; }
public bool IncludeRenderModeForPage { get; set; }
public bool IncludeRenderModeForObject { get; set; }
}
public enum XGraphicsPdfRenderMode
{
Text_Render_Mode_Fill = 0,
Text_Render_Mode_Stroke = 1,
Text_Render_Mode_Fill_Stroke = 2,
Text_Render_Mode_Invisible = 3
}
Usage:
gfx.RenderOptions = new XGraphicsPdfRendererOptions() { RenderMode = XGraphicsPdfRenderMode.Text_Render_Mode_Fill, IncludeRenderModeForPage = true };
https://github.com/zaryk/PDFsharp
I've happened across this issue a couple of times now on separate projects. I found that the simplest fix is to dispose of the XGraphics object and then simply re-instantiate it using your current PdfPage instance.
PdfSharp.Pdf.PdfPage Page = Document.AddPage();
PdfSharp.Drawing.XGraphics gfx = PdfSharp.Drawing.XGraphics.FromPdfPage(Page);
//Build your pdf here until transparency issue occurs
//Issue has occured so re-instantiate gfx object
gfx.Dispose();
gfx = PdfSharp.Drawing.XGraphics.FromPdfPage(Page);
//Continue as normal
Below is the code I use to hide something in document and edit the document and again save. Let me know if it helps you
private PdfDocument FormatPdfDocument(PdfDocument document, List<string> packingTypes, string carrierName)
{
XFont PackingTypeFont = new XFont("Calibri", 10, XFontStyle.Bold);
var i = 0;
foreach (PdfPage page in document.Pages)
{
using (var gfx = XGraphics.FromPdfPage(page))
{
var packingType = packingTypes.ElementAtOrDefault(i++) ?? "PackingType Not Found";
if (carrierName == "xxxx")
{
var packingTypeBounds = new XRect(64, 62, 200, 12);
gfx.DrawRectangle(XBrushes.White, packingTypeBounds);
gfx.DrawString(packingType, PackingTypeFont, XBrushes.Black, packingTypeBounds, XStringFormats.TopLeft);
var logoBounds = new XRect(0, 0, 130, 50);
gfx.DrawRectangle(XBrushes.White, logoBounds);
}
else if (carrierName == "yyyy")
{
var packingTypeBounds = new XRect(200, 0, 200, 12);
gfx.DrawString(packingType, PackingTypeFont, XBrushes.Black, packingTypeBounds, XStringFormats.TopLeft);
}
else if (carrierName == "zzzz")
{
var packingTypeBounds = new XRect(410, 20, 200, 12);
var state = gfx.Save();
gfx.RotateAtTransform(90, new XPoint { X = 410, Y = 20 });
gfx.DrawString(packingType, PackingTypeFont, XBrushes.Black, packingTypeBounds, XStringFormats.TopLeft);
gfx.Restore(state);
}
}
}
return document;
}
This works fine for me till date without any issues
Some possible causes to answer your question "What would cause this?":
Are you using the latest version PDFsharp 1.50 beta 3b?
IIRC there is a bug in 1.32 that can lead to unexpected behavior because some properties are not reset.
Since you see the rectangle this might be the cause.
Since you see the rectangle, this probably does not apply:
There are two ways of modifying existing pages: "append" and "prepend". Your code snippet does not show how you do it.
With "prepend" your lime rectangle could be hidden under a white filled rectangle. Watch the PDF in Adobe Reader with active Transparency Grid and check that you see the grid where the rectangle should be.
Since you see the rectangle, this probably does not apply:
Maybe your text goes to the wrong position. Check the MediaBox and CropBox settings of the PDF page you are modifying. Normally pages start at (0,0), but you cannot be sure.
Locate your text in the PDF file and compare the text position with MediaBox and CropBox.
It could be an unknown bug in PDFsharp. If you do not find a PDF that allows to replicate the issue which you can share then it will be very difficult to fix the bug. But maybe one of the options above leads to success.
So I managed to find a way to make it work. I ran the stamping process twice on the document and it worked as expected. Fortunately, stamping twice does not affect regular documents which actually work normally.
Still an issue in 1.50 for some PDF files...
As a workaround, I create a PNG file using System.Drawing.DrawString.
Bitmap bmp = new Bitmap((int)p.Width.Point, 30);
Graphics gra = Graphics.FromImage(bmp);
gra.DrawString("Hello world", new Font("Verdana", 20), Brushes.Red, new PointF(0, 0));
bmp.Save("test.png", System.Drawing.Imaging.ImageFormat.Png);
Then I use XGraphics.DrawImage from this PNG file.
XGraphics xg = XGraphics.FromPdfPage(p, XGraphicsPdfPageOptions.Append);
XImage xi = XImage.FromFile("test.png");
// Add it at the bottom of the page
xg.DrawImage(xi, 0, p.Height-32, p.Width, 30);
This always ends up on top.
I applied the solution provided by an user to solve the problem, but it's happening another problem. Previously I owned an icon along with the text, but after I used the code described here, my icon no longer appears. What can it be?
And how can I use the icon while using a different color other than the default on tab header?
The solution I used is:
private void tabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
TabPage CurrentTab = tabControl1.TabPages[e.Index];
Rectangle ItemRect = tabControl1.GetTabRect(e.Index);
SolidBrush FillBrush = new SolidBrush(Color.Red);
SolidBrush TextBrush = new SolidBrush(Color.White);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
//If we are currently painting the Selected TabItem we'll
//change the brush colors and inflate the rectangle.
if (System.Convert.ToBoolean(e.State & DrawItemState.Selected))
{
FillBrush.Color = Color.White;
TextBrush.Color = Color.Red;
ItemRect.Inflate(2, 2);
}
//Set up rotation for left and right aligned tabs
if (tabControl1.Alignment == TabAlignment.Left || tabControl1.Alignment == TabAlignment.Right)
{
float RotateAngle = 90;
if (tabControl1.Alignment == TabAlignment.Left)
RotateAngle = 270;
PointF cp = new PointF(ItemRect.Left + (ItemRect.Width / 2), ItemRect.Top + (ItemRect.Height / 2));
e.Graphics.TranslateTransform(cp.X, cp.Y);
e.Graphics.RotateTransform(RotateAngle);
ItemRect = new Rectangle(-(ItemRect.Height / 2), -(ItemRect.Width / 2), ItemRect.Height, ItemRect.Width);
}
//Next we'll paint the TabItem with our Fill Brush
e.Graphics.FillRectangle(FillBrush, ItemRect);
//Now draw the text.
e.Graphics.DrawString(CurrentTab.Text, e.Font, TextBrush, (RectangleF)ItemRect, sf);
//Reset any Graphics rotation
e.Graphics.ResetTransform();
//Finally, we should Dispose of our brushes.
FillBrush.Dispose();
TextBrush.Dispose();
}
You need to paint the Icon yourself also. An example would be to add something like the following after the painting of the tabs Background in you code (i assume that an image list was used here)
int imageLeftOffset = 4;
Point imagePos = new Point(imageLeftOffset, ItemRect.Top + (ItemRect.Height - tabControl1.ImageList.ImageSize.Height + 1) / 2);
tabControl1.ImageList.Draw(e.Graphics, imagePos, CurrentTab.ImageIndex);
You may need to reajust the drawing of the Text so that text and image aren't overlapping.
I am having a problem on my extendedtabcontol class, I cannot get rid of the dotted box or the visual style box on the selected tab. I have my own DrawItem (see below), I have overridden several methods from the tabcontrol and I have even overridden the WM_SETFOCUS and WM_PAINT in WndProc but the box and highlight will not go away. Is there anyway to turn them off (the box or visual style) or a simple way to draw over them / stop them drawing?
The user can tell which tab is selected because it is drawn in black when the others are grey.
protected void OnDrawItem(object sender, DrawItemEventArgs e)
{
// VisualStyleRenderer renderer =
// new VisualStyleRenderer(VisualStyleElement.Tab.TabItem.Disabled);
DrawItemState ds = e.State;
SolidBrush mybrush = new SolidBrush(Color.FromArgb(255, 151, 0, 11));
Rectangle tabArea2 = new Rectangle(0, 0, this.Size.Width+10, this.Size.Height+10);
//renderer.DrawBackground(e.Graphics, tabArea2);
e.Graphics.FillRectangle(mybrush, tabArea2);
int i = 0;
foreach (TabPage tb in this.TabPages)
{
Rectangle tabArea = this.GetTabRect(i);
Point newp = new Point(tabArea.Location.X,tabArea.Location.Y + 2);
tabArea.Location = newp;
if (this.SelectedIndex != i)
{
RectangleF tabTextArea = (RectangleF)this.GetTabRect(i);
e.Graphics.DrawImage(global::Config.Properties.Resources.Tab2, tabArea.Location);
}
else
{
e.Graphics.DrawImage(global::Config.Properties.Resources.Tab1, tabArea.Location);
}
SizeF size = e.Graphics.MeasureString(tb.Name.ToString().Trim(), drawFont);
PointF pf = new PointF();
pf.X = tabArea.X + (tabArea.Width / 2) - (size.Width/2);
pf.Y = tabArea.Y + (tabArea.Height / 2) - (size.Height/2);
e.Graphics.DrawString(tb.Name.ToString().Trim(), drawFont, drawBrush, pf);
i++;
}
}
I would post an image but I don't have the reputation.
Similar question for example:
Can I remove the dotted focus rectangle over tabs on a TabControl?