My app has all different kind of NSViews, including NSTabView, NSButton, NSTextField, NSPopupButton and so on.
I would like to change all display text to a certain font and with certain font style.
is there anyway to set the default font and font style in cocoa app?
I have tried:
How to loop through subviews in order to get the text of NSTextViews
however it doesn't work with NSTabView and NSButton.
I think that there must be an easy to do so, it's just I don't know what it is.
Please advise.
There isn't a built in way to do this (ie. by setting a key in Info.plist). You really do need to go through all the controls in your app, one way or another, and set a custom font for them. There are a few possible approaches. One is to use a custom subclass for all the controls for which you need to use a custom font. The subclass can be really minimal, it just needs to set the correct font upon initialization, possibly preserving other font attributes (size, color, etc.) setup in Interface Builder. Another option is to do as you've suggested and go through each subview in your app, check to see if it responds to -setFont:, and set your custom font if it does. I've used the first approach (subclass) with good success.
Related
Is there a way to change the alignment of all the textual elements (i.e textfileds, button titles, labels, navigation bar titles etc) throughout the app at once programatically? Actually I am developing a multi language app that has a language in which the text alignment is RTL. I dont want to set the alignment of every text element manually.There are some restrictions, so NSTectAlignmentNatural could not solve my problem. Actually the translations for languages arecoming through an API and that too in unicode format. So, how would the system detect what language is going to be displayed so that it could decide the alignment.
You can use UIAppearance to set properties of ui elements throughout your entire app. This will work for all classes that adopt the UIAppearance protocol (UILabel, UIButton, etc).
For eaxmple, the following code will change the text alignment of all labels in your app:
[[UILabel appearance] setTextAlignment:NSTextAlignmentRight];
IIRC, UINavigationBar does not support UIAppearance, meaning that you'll need to use a custom label for the title.
Replace all those elements with a thin custom class of your own creation that you can wire up to change this property based on the locale.
I have a UIBarButtonItem with the UIBarButtonSystemItemSearch type. I can programmatically change the tint color, like so:
searchButton.tintColor = [UIColor purpleColor];
However, what I'm trying to do is figure out a way to programmatically "fill" the button (i.e. the magnifying glass) with a given color. More generally, I'm trying to use a change in the icon to indicate that the search functionality is active.
I really like the built in search icon, but the lack of an obvious fill functionality is annoying. Is there any way to do something like this without creating an entirely custom button/icon? If not, what's the easiest way to utilize the existing search icon to create a custom button that does have the ability to be filled?
First off I would suggest simply using the tintColor to show your selected/unselected states without trying to mess with the shape itself since it is much easier and will convey what you're trying to do. Keep in mind that in this specific case, the magnifying glass may not even look right if it is filled in, that shape is very specific and people are used to seeing empty space in the circle.
If you want to continue on that route though, no you cannot easily change the built-in search icon. Your options are 1. programmatically take a snapshot of such an icon on the screen and try to manipulate that using CoreGraphics (not a great solution) or the better solution 2. which is just to get/make your own image and then you don't have to do any of it programmatically.
I'd like to take an existing PDF and add semi-transparent rectangles on top of the pages, at pre-defined locations. When the user moves the mouse over the rectangle, it should change color and/or transparency. I should be able to define different colors (including transparency) for both states. Clicking on it executes some action that I define (such as going to another page, or a website).
I understand that this can be done with annotations, but I'm having trouble figuring out which type of annotation would be best suited. They also don't seem to handle transparency very well. Of course, I'm open to using something other than annotations, if need be...
1) That would have to be annotations. If it's clickable-and-does-something, it's an annotation. It could be an annotation on top of some page content, but an annotation must be involved.
2) You can set the appearance of a button to be arbitrary PDF content, including "normal" and "mouse-over" appearances. Note that these appearances aren't available through the Acrobat UI, but can be accessed programmatically from your API of choice at the object level. All appearance dictionaries have 3 different states: "N"ormal, "R"ollover, and "D"own.
To be honest, I've never tried setting a form field's rollover (or down for that matter) appearance, so I'm not sure how well that will work, but the Theory is sound.
What's the difference between theory and practice? In theory, there's no difference between theory and practice. Ouch.
You didn't specify a programming language/os/anything, so it's not possible to give more detail.
Use a button with an ICON appearance and a transparent background. The icon is an arbitrary PDF content stream with resources. Within it, you can set transparency just like you would as part of a page content stream. In fact, the only way the acrobat gui lets you pick an icon is to select a page from an existing PDF document.
Alternatively you might also be able to set the widget's /DA to use transparency with an extended graphic state resource that you'd add to the Acroform's DR dictionary. I haven't tried that myself.
I'm guessing it is using a custom NSWindow, NSTextField, NSSecureTextField, NSButton? I don't necessarily want to replicate it, I would just like to know what would be involved in customizing my app's UI to this level.
The window itself could be a HUD-style panel, which you can get in IB without subclassing anything. It looks like there's a bit of custom background to it, unless it's just faintly showing something behind it; if it is a custom background, a custom view as the content view could do that job.
The separator could be an image view or a custom view.
The static text fields can be done without subclassing. Just change the text color.
The editable text fields, both the regular one and the secure one, you would need to subclass. I have no idea how you would do that.
The follow-link button is a mix of custom drawing and a standard image. Start with the NSImageNameFollowLinkFreestandingTemplate image; draw that, then fill an empty path with white using the source-in blend mode.
The other two buttons are customized, probably using custom cells in order to override the background without overriding the text drawing.
I'm fairly new to iPhone programming and am trying to implement a double-component PickerView. At this point the picker works fine in terms of taking user input, created with Interface Builder. However, I need to change the font size to accommodate the text length in each column. I very much would appreciate any link to a straightforward method to creating a multi-component picker with an adjustable font size. Seems like it is not possible if Interface Builder is used to create the picker. So far I have not found any code links that address this issue in detail.
Thanks in advance.
You need to implement the delegate method...
pickerView:viewForRow:forComponent:reusingView:
... and then alter the font of the UI element inside the provided view. I think the default is a UILabel. Alternatively, you can provide your own custom view.