On the JOSM interface I have the background colour as white. The scale bar top left shows distance using white text. This is invisible on a white background. Can the colour of the scale bar text be changed so that is is visible when the background is white? JOSM version 17013 Java 1.8.0_271.
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I have these Views on which I add UILabels as text, The Views can have a background color that is dynamic and cannot be chosen,
Based on that I need to figure out the font color from only a set of three choices - two black or white or dark grey.
For example on a dark red background, a white font would be more suitable than black, while on a light yellow, perhaps a dark grey or black would be readable,
is there any index i could check from the background UIColor to see the illuminance?
Take a look at my UIColor category and the blackOrWhiteContrastingColor method. This will tell you what will look better out of black or white. You could extend that to support dark grey as well.
Basically the way it works is to look at the luminosity difference between the target colour and black, and then between the target colour and white. It then chooses the biggest luminosity difference.
I am using a uipicker as an input view for a text control. I also have a toolbar set up as an accessory input view. I would like the toolbar tint to match the picker. I have tried using the magnifier tool on the color chooser to get the RGB for the picker, but when I use these RGB values to set the tint on the toolbar I get get a close, but not exact match.
Is there anyway to figure out exactly the background color of the picker? None of the palettes in the color chooser seem to have this particular shade of gray with a slight hint of blue.
Thanks,
Jenny
The border consists of a gradient for the top half and a solid color for the bottom half:
As for the 'white' background, the brightest part is a #fafafa to #5f627c gradient.
I have a line of text which I want to display behind a CALayer, and when behind, then the text color should appear in a different color in the overlapping area.
The color of the text is black, and the text color should appear as white on the red layer when they overlap (they may both move around, so this needs to be continuously updated).
How may this be accomplished?
This can’t be done with any blend mode. You’ll need to render the text into the foreground layer in white by hand.
One trick you could try is to keep the white text always visible, but clipped by the layer that moves around using a second layer that also moves, set as the text’s mask.
I would like to change the color behind the flip from white to a different color or picture. Is that possible?
Change the background colour of the UIWindow in MainWindow.nib. Either "black" or "clear" should both work (I think...)
It's one of the first things I do to any app, otherwise you get bits of white showing on a view rotation (in the very old days of 2.x there were huge patches of white; they've since masked off the screen edges during a rotation, but a few pixels still show through) and when you show/hide the status bar (e.g. for UIImagePicker) and stuff. Black looks a lot better than white for the window background.
I'm designing a progress bar for an app that essentially is two UIImages - both are the exact same size (long rectangles with rounded corners), except they are colored differently.
The bottom bar is black and the progress bar that will fill over it is grey. Displaying the bottom bar is easy enough. The issue I'm trying to figure out is how to get the grey bar to display only a piece of itself.
For example....
grey : <-------
white: <------------------->
Essentially, I'd like to display only the first half of the grey bar because my progress is at 50%. I'd like to keep the rounded corners at the left of the image though.
Is it possible to dynamically crop UIImages?
The easiest way to do that is to create using 3 separated images: 2 with rounded corners (left and right), and one small easily resizable image to display progress.
And yes, you can crop images dynamically, but not as easy and as quick as need for progress bar.