How to make CupertinoNavBar leading widget Expand:
Currently, it fixed leading width, even make middle to be None, it still fix.
I know this is opposite with Apple Design princeples but there many APP such as Facebook messenger using same design.
Any way to achieve this?
I was seeing this problem and decided to look for the source code.
I found that it can be solved by changing the value of the maxWidth(by default is 300) to a bigger one inside navigation_toolbar.dart, line 113, class _ToolbarLayout and function performLayout.
But it's not a good idea to change an inbuilt class, so I recommend to change it in a copy of those classes.
Hope this helps!
Related
I've embedded a GitHub Gist in a website for the first time, and am having some issues with how it appears. It seems like something in my Hugo theme's CSS is adding space above line 1 and below line 13.
The problematic display can be seen here.
Anyone have thoughts on how I could remove that space? I've never see a Gist render like this before for, nor can I find any questions on here that get at what I am seeing.
Thanks for your help!
gist-embed adds a class of data to the table container. It is used to customize the look of the embedded gist. Adjust your CSS selectors to fix the problem. I am sure you are inadvertently styling the data class directly, when in actuality you want to style a compound selector article.data.
Revisit your CSS code and adjust your selectors to reflect what you desire.
I keep seeing references to a component called "LeftNav" in the material-ui react library (example: Material UI - Open LeftNav / Drawer on AppBar click), but I can't find anything about it in the documentation. What is it? How does it differ from Drawer? Why is it apparently undocumented, despite being hugely popular (at least judging by the number of questions I see about how to use it)? What is its toggle() method for, and is there a similar method for Drawer (the documentation suggests not, but for all I would know by reading the documentation there was no such component as LeftNav at all, so I don't think the documentation can really be trusted here)?
<LeftNav/> is the same as <Drawer/>. The name was changed from "LeftNav" to "Drawer" with the release of material-UI version 0.15. Take a look at the change log here and you will see this.
I read this
"
It used to be that Android would use a single pass to process
RelativeLayout-defined rules. That meant you could not reference a widget
(e.g., via android:layout_above) until it had been declared in the XML. This
made defining some layouts a bit complicated. Starting in Android 1.6,
Android uses two passes to process the rules, so you can now safely have
forward references to as-yet-undefined widgets.
"
I do not know what is the problem maybe is eclipse problem, but even I use 2.3 I still have problems when I reference some view that is not declared jet so for me it seems like android doesn't uses two passes to process the rules for relative layout.
note: I always use #+id/widget_name when I declare the widget and #id/widget_name when I reference that widget from other widget. I have noticed that I can use #+id/widget_name even when I just want to reference that widget. I guess that is wrong but why sometimes is works without any complaints ? In my opinion one widget should be allowed to be declared only ones...
My questions is is really android uses two passes ? and I need some guidelines (best practices) for working with relative layouts
I am little confused about how this relative layout parings are made, so any explanations are welcomed
Thanks
#+id/name creates a new id, if it doesn't already exist. #id/name references an existing id, and will never create one.
I'm not sure if you can use #id/name before #+id/name in the same file. If not, I can think of two workarounds:
Always use #+id/name.
Define all id's in the ids.xml file, and always use #id/name.
This is general information on how Android draw views.
I think that Android passes twice through all the view, but it doesn't pass through each single view once. So if you have a reference from one xml to another it will always work fine, but if you have references inside a single xml you must be carefull to order the elements in the xml correctly. For example, I have view1 and view2 in my RelativeLayout. If I want to refer to view2 from view1 I must declare view2 before view1.
I'm trying to use the printing stuff in iOS 4.2 to print from my iPhone app, but I'm having real trouble getting multi-page content to display nicely. As you can see in the attached screenshots of PDFs generated through the iOS printing API, UIMarkupTextPrintFormatter really likes to use a painfully small top-margin when rendering.
Additionally, it doesn't seem to try to split block-elements too nicely either ... it's tough to see in the screenshot but the page break actually occurs halfway through a table row, rather than on a border between rows.
I've tried using the CSS #page directives to specify page boundaries, however iOS Webkit doesn't seem to support these at all.
Does anyone know of any techniques, either in HTML or through the iOS SDK to make these top-margins bigger?
I really don't want to write a custom UIPrintPageRenderer class because I'm trying to give my users the ability to customize their printouts through HTML templates ... going with a custom renderer would almost certainly make this impossible (or really difficult).
Any help is much appreciated!
You're on the right track with UIPrintPageRenderer, but fortunately you don't need to write a custom subclass to do this. All you need to do is instantiate a vanilla UIPrintPageRenderer, set the headerHeight and footerHeight properties, and add your HTML formatter to the renderer using addPrintFormatter:startingAtPage:. It only takes a few extra lines of code, I have posted my method here: Print paper size and content inset
I want to display a simple GIF image in a VBox using GTK+ from C. I know that I need to use a GdkPixbuf. But as usual there are no example of doing it. Can anyone provide help?
Also: In GTK+ how can we add a PNG image as background to a widget? Can anyone provide an example?
Forgot something to add this:
forgot to tell u that i am using Glade to develop GUI...
And i have created vBox in Glade and in one of the blocks of the vBox i need to display FIG Image....
Sorry of this...
gdk_pixbuf_new_from_file() -- but see unwind's answer for a better way to do it using a GtkImage widget.
You need to set the background pixmap field in the widget's style structure:
GtkRcStyle *newstyle = gtk_widget_get_modifier_style(widget);
newstyle->bg_pixmap_name[GTK_STATE_NORMAL] = g_strdup(pngfilename);
gtk_widget_modify_style(widget, newstyle);
PS. You can often find code examples by doing a Google search for the function you need an example of. The GTK docs usually don't contain examples for every single function, because that would clutter them up, and the documentation of functions like gdk_pixbuf_new_from_file() is usually pretty straightforward. I've noticed you often post this kind of question and I'm wondering if you are looking for the documentation in the right place. For example, are you using the excellent reference tool DevHelp? On the other hand, the GTK documentation is really missing some important information in a few places. If you have some improvements, why not contribute to the documentation?
A vbox in GTK+ is a widget, that displays other widgets as its children, stacking them vertically.
Unsurprisingly, there is a GTK+ widget dedicated to displaying images; it's called GtkImage. You should use the gtk_image_new_from_file() call to create one, passing it your GIF filename, and then just add that to your vbox. There's no need to create the underlying GDK image yourself.