Does anyone know how to set the background colour of just a section of text within a RichTextField on the Blackberry?
I already use the offsets, attributes and fonts arrays to make changes to the appearance of certain sections of the text, but I would like to add a highlight colour to the background of one section too.
I know there is a protected method called getBackgroundColors that returns an array of colors to be used, which I can overwrite. But I have tried this and that method never seems to get called in my code, I don't actually know how and when the underlying implementation of the RichTextField actually use this method. Any ideas?
You can extend the RichtextField and then in the paint method, you can paint the background and then call super.paint()
So basically, it can't be done is the answer.
It can't be done.
Related
I have a need. I need to make a window. The glass on the window is transparent. I have found some examples:
https://threejs.org/examples/#webgl_materials_shaders_fresnel
https://threejs.org/examples/#webgl_materials_cubemap_refraction
The background of these examples is static pictures.
My background is dynamic. How can I do it?
Maybe you can use THREE.Refractor like shown in this example. It allows you to create a refractive see-through surface. You might have to adjust the respective shader program in order to achieve your intended visual result (the default shader of THREE.Refractor does not perform any distortions).
I want to set an background to my listview that have different size (depending the appearance of softkeyboard). My list view is in between the editboxes and I want my editboxes always to be visible (means I do not want to use adjustPan).
My problem comes in the moment when the android adjust the size of my listview and the background get tweaked. I want my background to remain the same, just to be cropped.
and I want to look something like this
Is there any style that I can add that will make the image act like this, the point is to do NOT do an resize and to fill the whole available area. And to DO something like a CROP , means to show as much as there is an space and then the rest just to be cropped.
I found some workaround for the problem I want to solve. I set the scaleType with "centerCrop" value and it seems to work fine.
I hope this will save time to someone else having this problem...
Try in your Manifest to add
android:windowSoftInputMode="adjustPan" or "adjustUnspecified"
for your <activity
Read more about values here:
http://developer.android.com/guide/topics/manifest/activity-element.html#wsoft
I would put the listview in a linearlayout and put the background on the linearlayout.
As for the textbox at the top, if you have not figured that out, use relativelayout.
Here is a good link about the view being re-sized by the keyboard:
http://groups.google.com/group/android-developers/browse_thread/thread/be5ffe40c2bc29f0?pli=1
Here is a good link for the button staying on top:
Add Image at above of listview
As far as I know you can use Custom Draw in a list-view to paint individual cells the way you want using CDDS_SUBITEM.
However, I would like to have multi-colored text within a cell. That is, I would like to, for example, set a cell's text to: "this program is called the [start red text]Red Program[end red text]" - is there a way to accomplish this?
Well, in your NMCUSTOMDRAW structure you get an HDC. You will need to call DrawText multiple times. You may be able to just call SetTextColor to do that, or you may have to call SelectObject and select in your own custom Pen to change the color... yay GDI.
I'm wondering if there is a simple and quick way of displaying an image when the user hovers a QLabel...
Since QLabel can be used to display QPixmap, I would like to display some kind of "preview" when hovering a QLabel...
Do you guys know how I could manage this ?
Thanks in advance !
You can set the tooltip to use html, including <img> tags. Will that do what you need?
As described in the docs, you can override the object's event handler if you need to do something fancier in a tooltip than can be done by default. (such as selecting a particular area of an image to put in the tooltip)
As long as you set the button size large enough, you should be able to capture the mouse-over events and display on mouse-over... but this seems like a somewhat strange way to go about things. Why not display all the images at first?
For those who are interested in the result proposed by jkerian :
Simply :
MyLabel->setToolTip("<html><img src="+MyImagePathAsString+"/></html>");
Will result in :
Thanks again to jkerian.
I don't know what kind of layout your QLabel is in, but I'm guessing it will cause weird layout changes if you just set the pixmap on the label when mouseovering it. Rather use a tooltip or just display a pixmap freely on the canvas.
I've been banging my head about this seemingly easy task and I could really use some help.
I have a wide Image loaded in the gui (using the designer..) and I want to be able to draw only a portion of it, a rectangle.
I need to be able to change this rectangle position over the large image, in order to draw a different part of the larger image at will. In this process the rect must maintain its size.
Using the Ui::MainWindow object I'm able to access the label holding the image and a solution that involves using this option is preferred (in order to keep up with the rest of the code I've already written )
Any solution will be much appreciated :)
Thanks,
Itamar
I would definitely (for ease of use) just place an empty label as placeholder in Designer.
Then implement the paintEvent for this label (delegate it to your own method). You'll have also have to look into QPainter, QPixMap, etc... Should be doable based on these hints and the documentation.
If you want more, I suggest you provide a small code snippet to work upon.
If you want to do this more or less purely through designer, you could put a QScrollArea where you want the portion of the image to appear. If you set the scroll area's scrollbar policy to be never shown, you can then manually change what part is visible via the scroll area widget. However, this would probably be more complex that creating a derived widget and reimplementing the paint function.