I'm using ICSharpCode's AvalonEdit text editor, and I have a custom DocumentColorizingTransformer.
I would like to center certain lines of text inside of ColorizeLine. Is this possible?
I've been able to figure out how to change the line's text in every other way I want (color, italics, underline, etc), but I can't figure out how to change the line's text alignment...
I ended up having to dig into the editor's source for this:
First, in VisualLineTextParagraphProperties.cs, I had to expose the TextAlignment via a new internal property (defaulted to LeftAligned), so I could set it (and, of course, return it from the getter of the public property).
Then, in TextView.cs, in the BuildVisualLine method, I had to test the text of documentLine for the conditions under which I wanted the line centered, then change the paragraphProperties object accordingly.
Do note that I had to make a copy of paragraphProperties - otherwise the centered alignment would bleed over into the next line (because the given paragraphProperties object seems to be reused).
Also note that I could not find a way to use a VisualLineElementGenerator to do this - even though it still looks to me like that would be the place to change something like TextAlignment...
Related
I am using the standard textbox control on a Windows form. I want to display the text VERTICALLY rather than horizontally. To accomplish this I set the multiline property to true, the TextAligh property to center and used the lines property to input each character as a separate array element. So far, so good.
I see the text displayed the way I want but would like to reduce the vertical spacing between lines without reducing the font size. Can it be done? If so, how?
It can be done, but not by the default options on a standard textbox.
You would probably need to override the Paint event and draw the text yourself, but it would get very ugly, and would essentially be reinventing the standard Paint method.
I'd like to change the font size of a chunk of RTF without erasing the bold / italic / underline formatting (an issue similar to the one in this question). The accepted answer is to modify the selection of the text box until the SelectionFont propery is null in order to find runs of consistently formatted text which can be modified individually. Sounds reasonable. However the actual behavior of the RichTextBox control seems to be inconsistent with the documentation.
In the documentation for RichTextBox.SelectionFont MSDN states:
If the current text selection has more than one font specified, this
property is null.
However, this code which uses mixed bold / regular text doesn't behave as you'd expect:
var rtb = new RichTextBox {
Rtf = #"{\rtf1 This is \b bold\b0.}"
};
rtb.SelectAll();
// Now you'd expect rtb.SelectionFont to be null,
// but it actually returns a Font object
Is there any other reliable way of formatting the text so that I can change the font size without clobbering the other formatting. (Manipulating the RTF directly is OK, I'm not absolutely set on using WinForms to achieve this).
I've given up on trying to go through Winforms to fix this. As I'm applying the change to a whole document (rather than just one portion), it turns out that it's not too hard to modify the RTF directly.
In this case I'm interested in the font size, which is represented by the \fs command. So to replace all the 8.5pt text with 10pt text, you can replace \fs17 with \fs20. (Yes, RTF font sizes come in units of half a point, apparently).
This seems to work well enough, although it does feel like one of those "let's mangle our HTML using regular expressions" type solutions, so I'm not convinced that it's very robust.
Take a look at this:
Changing font for richtextbox without losing formatting
I think it's the same issue. LarsTech's solution is working perfectly for me.
I need the way to render regular space, nonbreaking space and some other formatting characters (like left-to-right mark) like MS Word renders them, when you choose to show non-printable characters.
I tried two approaches:
1) Replace characters with rarely used characters.
It works, but in this case we loose "nonbreaking" behavior of nonbreakable space (and LTR and RTL marks also stop working)
2) Use the custom font
It allows to preserve special behavior of nonbreaking space and LTR/RTL marks, but for some strange reason WPF renders nonbreaking space with usual space glyph.
WinForms RichTextBox renders text with the same font correctly.
This problem could be solved with applying different font with different space glyph for spaces and nonbreaking spaces, but LTR and RTL marks are not rendered at all even if I add glyph for them.
Have you any ideas how I could render that characters with visible glyph preserving their "LTR", "RTL", "nonbreaking" behavior?
I didn't try anything similar until now, but I can think of two options:
Warning -> I didn't try it out
The first method:
Create a subclass of UIElement
Get the Style with ControlTemplate for the Richtextbox and add it to App.xaml
Add an instance of your subclassed UIElement within the inner Panel of the Scrollviewer from the RichTextBox ControlTemplate
Make the RTBox available to a dependency property in your class via DataBinding in the ControlTemplate (if possible) or any other way that does the job
In your UIElement subclass, you iterate through characters of the document
Draw a symbol in your Adorner for each space and LineBreak you encounter
Get the Rect of a character at a specific position with the RichTextBox. Use this rect for placing the symbols.
The advantage of this Method is that you have a clean separation and don't need to subclass the RTFBox, but you won't be able manipulate the width of the spacing to make room for larger symbols. Also, other developers need to know that they need that Style in order to gain that functionality.
The second method:
Create a Custom Adorner
Decorate the RTBox with the custom Adorner
From the Adorner, you should be able to access the Child RTBox
In your UIElement subclass, you iterate through characters of the document
Draw a symbol in your UIElement for each space and LineBreak you encounter
I remember that there is a possibility to get the Rect of a character at a specific position with the RichTextBox. Use this rect for placing the symbols.
It's also without subclassing the RTBox. You also can't adjust the spacing. In contrast to method 1, other developers will immediatly recognize that this functionality has been added. The one disadvantage is that you will have to handle scrolling too.
You can try insert near LTR/RTL visible glyph instead of replace that.
Store all of the values as their special characters. It sounds like your printing functions need to handle a) what kind of output the user wants, b) interpret your data array/massive string of characters and spit out the values with regard to what the user wants to see. You don't give too many details on how your things are stored but this would be a very reasonable way to go about things.
I have textBlock defined such that it fills the entire screen of the phone.
The textBlock is initialized with some data which cannot be displayed in the boundary and hence gets clipped.
I want to read the data which actually got rendered on the screen (i.e. whole data - clipped data).
Putting a breakpoint shows me that myNewTextBlock.Text contains the entire data that it was initialized with.
Thanks
You could look at using Measure and MeasureOverride to determine how much of the Text would fit in the available space.
You'll likely need to test various trimmed versions of the Text but it shouldn't be too tricky.
I would like to set the ToolTip on my chart line, pie, area, bubble to include both the X and the Y values.
Charting is use is defined here :
xmlns:chartingToolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"
I've learned that I can use the ControlTemplate to do this and by overriding the entire thing, I can also set the tooltip.
But this also changes things which I like, the random color selection, the status changes etc.
Is there a way to apply only the tooltip binding to all chart series types, without having to override the entire thing for each of the types (that makes for a very long and mostly irrelevant code, which mostly I don't understand and don't care about)
Thanks! (My first post)
...
You have to copy a part of the original source (the style).
Check this site: http://blogs.msdn.com/b/delay/archive/2010/04/22/nobody-likes-a-show-off-today-s-datavisualizationdemos-release-includes-new-demos-showing-off-stacked-series-behavior.aspx
Here you can download this zip file that contains an example project in WPF.
Read the source/style in ChartStyling.xaml and your question will most likely be answered!