I just started building my first App with Codename One and I'm having quite some trouble. :-)
I cant change the background color of a TextField, I changed everything in the Theme and named it "TextField". At the Color tab I changed the background color and set Transparency to 255. Since the Component is named TextField, shouldnt the style be applied automatically when I make a new TextField?
I also tried to set the UIID manually to "TextField", which didn't help either.
Am I missing something?
Kind regards,
Max
The way backgrounds work in Codename One is this:
Border is applied first
Then image
Then gradient
Then color
TextField and other components such as Button etc. often have a default border derived from the theme.
Switch to the Border tab, click derive then click the ... button and select empty.
Related
I have tried everything possible to style my Tab component but its not getting reflected. I want my selected Tab to have a white background and red foreground. Even though I have edited Style using Theme designer. Its still doesnt work. I read the docs and I am aware Tab component is now like a toggle. I did the suggestion to setTabUIID(null) but still cant get it to work. How can this be done.
You don't need the setTabUIID(null); just make sure to style both selected and unselected styles. Also override the Border to Empty if you don't define a border.
How do I set the color of the radio button's control? No matter what color I specify in the style, it draws the outer circle and inner bullet in black. I want it to draw in in white on a black background to match my theme, but it always draws in black. (I'm actually doing this in a Multi-Button, setting the color of the Emblem UIID.)
I tried the first suggestion, to define the constants. That didn't work. Here's what happened.
I tried it two ways. First I defined just the radioSelectedImage and radioUnselectedImage. When that didn't work, I added both the radio*DisImage values, but it did the same thing. The selected and unselected images worked fine, but as soon as I touched a radio button, it got the focus, and the button was drawn in black, which made it invisible against my black background.
I did find an approach that worked, but it required the use of two deprecated classes. Here's what I added to the init() method of my main class:
LookAndFeel lookAndFeel = UIManager.getInstance().getLookAndFeel();
if (lookAndFeel instanceof DefaultLookAndFeel) {
DefaultLookAndFeel defaultLookAndFeel = (DefaultLookAndFeel) lookAndFeel;
Image sel = theme.getImage("RadioButtonSelected.png");
Image unSel = theme.getImage("RadioButtonUnselected.png");
defaultLookAndFeel.setRadioButtonImages(sel, unSel, sel, unSel);
defaultLookAndFeel.setRadioButtonFocusImages(sel, unSel, sel, unSel);
}
The difference here is that I have a way to set the focus images. I can't do that using the constants, which is probably why it doesn't work. I'd really rather not use deprecated classes.
There are theme constants to allow you to add images to the radio button for unselected, selected, etc. Look here...
https://www.codenameone.com/manual/advanced-theming.html
I am trying to get a result looking like this (picture taken from https://material.google.com/components/tabs.html#tabs-usage):
I don't want the tabs to take 100% of the width of the page, as it is by default with material-ui. Is it possible to do this with the implementation of material-ui ? I already played with the width of each tab using the style tab property, but the inkbare seems hardcoded to use percentages according to the id of the selected tab, and therefore doesn't underline properly the resized tabs. Is there a workaround?
There is an issue related to this problem https://github.com/callemall/material-ui/issues/1203
But yes, there is an easy workaround. (unfortunately it doesnt support diffrent widths across the tabs).
You can use the Tabs tabItemContainerStyle property to set the width of the tabs container (make it the width you want to each tab times the number of tabs).
Since the background color is setted on that element, you're gonna need to override the styles for two others Tabs properties (style and contentContainerStyle).
In this example Im setting the same color as my tabs in the style property (for the whole component) and setting the contentContainerStyle back to a white background.
You could use the classes properties as well..
Ex: (Imagine you have a blue toolbar)
<Tabs
tabItemContainerStyle={{width: '400px'}}
style={{background: 'blue'}}
contentContainerStyle={{background: '#FFF'}} >
How can I create a theme for a dialog box?
I was trying to change the border style of the dialog box but the border style applies 2 times for an inner element and for an outer element. I was expected that the border style applies only to the inner element.
To be clearer, as I cannot add image to my post, it seems that the dialog does not consist only from the center box which is showed while dialog is active. The dialog UI consists from a “background form” which usually is transparent and from a container which overlay over the background form. The last mentioned container contains de graphic representation of the “dialog box”.
My issue is that I can not apply my style only to the container which contains the dialog box but the style applies also to the background form.
How can I apply the border style only to the dialog box container element?
Any additional tips will be highly appreciated.
Thanks.
How are you applying the style? Are you using the theme to apply a style to the Dialog UIID as explained here.
Using setStyle or getStyle on a dialog component would be problematic and would not result in proper styling (you might get away with doing it on getDialogComponent but you should work with the theme).
Notice that to style a dialog you should use Dialog, DialogTitle & DialogBody UIID's and quite a few theme constants.
Thanks Shai,
is clear now.
I’m doing a custom dialog starting from the BlankDialog element provided in designer.
Because I started from BlankDialog I thought that overriding only UIID theme is enough.
I understood the BlankDialog structure wrongly thinking that is a simple empty form because is named "Blank…"
Is clear now that for every new UI object added, I should check if it has any other UI child to be customized together with the parent.
Thanks again.
I am currently working in the C# windows application with DevExpress controls.
Now I want to change back color of bar button item while loading the form.
I've tried following code:
barButton.Appearance.BackColor = Color.Red;
but the bar button back color not changed to red.
By default, bars use the skins to draw their content. In this case, all background colors are provided by specific skin elements, which cannot be changed. The only way to change a specific item's background color is to disable skins:
put the BarAndDockingController component onto a form, and assign it to the BarManager.Controller property. Set BarAndDockingController.PaintStyleName or LookAndFeel to any non-skin style(for example "Flat"). Then use the Bar.Appearance.BackColor property to set the desired color.
Alternatively, you can create your own custom barItem in a way similar to the one described in the How to change the background color of highlighted links KB article.