How can I give a width in percentage of west element. I have a given size as "60" and also selected unit as PCT but it is not working.
<g:SplitLayoutPanel>
<g:west size="60" unit="PCT">
<g:HorizontalPanel>
.......
</g:HorizontalPanel>
</g:west>
</g:SplitLayoutPanel>
SplitLayoutPanel only supports PX unit sizes (see documentation).
If percentage sizing is a must and you can't use anything but SplitLayoutPanel for your task, you could calculate and set pixel sizes of your sub-panels programmatically, perhaps by extending the panel and overriding the panel's onResize().
Related
I'd like to set the size of a button in .NET Maui to take up half of the window size, or some other fraction. I want to have some big buttons, and I can not lie. If I was doing this in html/css, I would set the width to 50%. In .NET Maui, I would think that I would set the widthrequest to 50%. There doesn't seem to be a way to do that because .WidthRequest only takes a double. So, I thought I would get the width of the current window. I try
var width = DeviceDisplay.Current.MainDisplayInfo.Width;
That only seems to return a zero when I try this in windows in debug mode. Googling doesn't seem to be much help. Is there a way to set a button to a width?
TIA
Maui has proportional sizing for grid row and columns. You don't explain where you want your button but you can use multiples of * proportional.
https://learn.microsoft.com/en-us/dotnet/maui/user-interface/layouts/grid?view=net-maui-7.0
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="2*" />
<RowDefinition Height="*" />
If you put a button in that middle row then it will be half the width of the grid and central.
Similarly, define 3 columns with * widths and you have a central cell half the width and half the height of the grid.
I test the code and it work well:
<Button
x:Name="btn"
Text="btn"/>
double width= DeviceDisplay.Current.MainDisplayInfo.Width/4;
public MainPage()
{
InitializeComponent();
btn.WidthRequest=width;
}
I am trying build a UI with a VerticalPanel inside a ScrollPanel inside another VerticalPanel. I need the ScrollPanel to stretch to its parents height and width, so I set the height and width to 100%. The problem is, if the child VerticalPanel exceeds the size of the parent's, the ScrollPanel stretches to fit the child, beyond the limits of its parent.
Are there any CSS properties to limit the size of the ScrollPanel? I can't use maxHeight/maxWidth because I don't know the dimensions of the parent and would like to continue using "100%" as the width/height values.
Thanks!
unfortunately, you can't set ScrollPanel sizes to percentage. If you want to set your scrollPanel height to client's view height, you have to manage its height on your code to Window.getClientHeight().
You can not specify scrollpanel height in percentage. This should be absolute not relative. You have to modify your code and replace percentage to px or em but not percentage.
For more detail refer Scroll Panel Height
Is there a good way to set the max size for a child of a SplitLayoutPanel? Right now I override its onResize method and call a JSNI function to set the right or width style properties of the parent div of the center panel's div, the right panel's div and the splitter panel's div, if the right/east panel is over 400px wide.
I noticed the splitter and the right panel's size don't even follow the mouse cursor and oscillate wildly between about 4/5 and 2/5 as wide as they should be based on where the mouse pointer currently is.
I have debug in eclipse and tried running it without eclipse and it's the same. I am calling super.onResize(), as well.
If I am understanding your problem correctly, you want to have a SplitLayoutPanel to occupy maximum space of the parent element. For this you can use the percentage property of width like,
SplitLayoutPanel slp = new SplitLayoutPanel();
slp.setWidth( "100%" );
And in the next step you want to add child element into the SplitLayoutPanel and it should occupy maximum area. Then set each child width to 100%
Widget child = // Instantiate any type of widget
child.setWidth( "100%" );
slp.add // Use proper add method and add the child to SplitLayoutPanel
I did not understand what did you mean by dragging is very jumpy. Did you mean Splitter size is too small that you cannot find the splitter. If thas the case, you can increase the splitter size by passing it in the constructor like
int splitter_size_in_pixels = 5;
SplitLayoutPanel slp = new SplitLayoutPanel( splitter_size_in_pixels );
I noticed the splitter and the right panel's size don't even follow the mouse cursor and oscillate wildly between about 4/5 and 2/5 as wide as they should be based on where the mouse pointer currently is.
I too saw jerky movement when dragging the splitter. My south pane contained a vertical panel which contained a label and a table. The fix was to set the VerticalPanel height="100%" . I have appended the uibinder code.
HTH
Julian
<g:SplitLayoutPanel styleName="gwt-SplitLayoutPanelTtc" ui:field="splitLayoutPanel">
<g:north size="40">
...
</g:north>
<g:west size="200">
...
</g:west>
<g:south size="500">
<g:VerticalPanel height="100%" width="100%">
<g:Label ui:field="tableTitle" styleName="tableTitle"></g:Label>
<g:Grid ui:field="table" styleName="gwt-Grid"></g:Grid>
</g:VerticalPanel>
</g:south>
<g:center>
...
</g:center>
</g:SplitLayoutPanel>
You can fix the jerky/jumpy movements by adding intermediate ResizeLayoutPanels.
MyComposite.ui.xml :
<!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent">
<ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder"
xmlns:g="urn:import:com.google.gwt.user.client.ui"
xmlns:my="urn:import:my.custom.package.client">
<g:SplitLayoutPanel ui:field="splitLayoutPanel">
<g:west size="250">
<g:ResizeLayoutPanel ui:field="leftMenuOuterPanel">
<my:MenuWidget ui:field="menuWidget" />
</g:ResizeLayoutPanel>
</g:west>
<g:center>
<g:ResizeLayoutPanel ui:field="centerOuterPanel">
<my:AwesomeWidget ui:field="centerWidget" />
</g:ResizeLayoutPanel>
</g:center>
</g:SplitLayoutPanel>
</ui:UiBinder>
thanks to OlivierH answer
i have a small screen and i want the horizontal scrollbar on datagrid to appear automatically.
i've used:
dataGrid.setMinimumTableWidth(1500, Unit.PX);
this sets the width both the scrollbar still not appear
any tip?
I had a similar problem. When using DatGrid make sure you place it within a ResizeLayoutPanel. Set the height of the panel to xxx PX and the width to a yyy %. Then for the DataGrid just set width to 100%. Column widths units can be EM, PCT, or PX. In fact do not set all column widths to total 100%, otherwise you'll get funky display issues. Hope this helps.
So I tested out this code, both scrollbars show.
<g:ResizeLayoutPanel height="480px" width="760px">
<c:DataGrid width="100%" addStyleNames='{style.cellTable}' ui:field="testResultTable"/>
</g:ResizeLayoutPanel>
It looks like you have to specify absolute sizes of all but one subpanel. For example, from the GWT docs:
DockLayoutPanel p = new DockLayoutPanel(Unit.EM);
p.addNorth(new HTML("header"), 2);
p.addSouth(new HTML("footer"), 2);
p.addWest(new HTML("navigation"), 10);
p.add(new HTML(content));
But I want the north panel sized by the browser. I put some text or buttons in it and I don't know exactly what size it will be, I just know it is relatively thin and at the top of the page. And I want the content to take up the rest of the space, but no more, so there are no browser scroll bars. Is there a way to handle this with these newer layout panels?
Right now I'm using the older panels, and I have a handler attached with Window.addResizeHandler, which sets the height of the main content area so that everything fits within Window.getClientHeight
Update:
Thomas suggested a DockLayoutPanel inside a HeaderPanel, but this is not working for me:
<g:HeaderPanel>
<g:Label>Header top</g:Label>
<g:DockLayoutPanel unit='PX'>
<g:west size='300'>
<g:Label>West</g:Label>
</g:west>
<g:center>
<g:Label>Center</g:Label>
</g:center>
</g:DockLayoutPanel>
</g:HeaderPanel>
"Header top" is there, the rest invisible. It looks like inner divs are getting 0 height.
You should put a DockLayoutPanel (for the west and center regions, possibly the south one too if you don't want it to use its natural height) in a HeaderPanel (for the natural sizing of the north region)