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;
}
Related
Can someone help me in understanding how to calculate the Height and Width of a Powershell Forms. For Example I Created a blank Powershell form of Height 500 and Width 700 and now If want to place a Text box a little below from the top of the form what will be the height and width that I need to enter? and If I want to place a Button at middle of the Form? what will be the height and width that I need to enter? I am struggling with this calculation.
You should get the screen size and use the ratio to set position. The ratio is useful for different screen size.
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().
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>
Forms on Windows 7 and Vista have thicker borders than those of XP. As a result, some content that spans the entire height or width of a form will be cut off. Is there a simple way to fix this, or do all the forms of my application need to be resized to accommodate for this?
Update: It appears to be the fault of the form size and not the borders that are causing the problem. See the following images for an example. Notice how the controls have the correct location at the top-right corners, but they reach the each of the form in Windows 7 while a border is retained in XP. The same code is used to resize and position the controls.
Here's what a form looks like in XP:
alt text http://img504.yfrog.com/img504/1328/bordersxp.png
You should fix the size of the form programatically, to make sure the client size is big enough to fit everything. You can easily calculate the difference between the current size and client size of the form, and increase/decrease by the right amount.
You probably want to perform this inside Form_Load.
In VB6, the client size and width are referred to as ScaleWidth and ScaleHeight for forms. Setting these values just messes up the scaling, rather than resizing the form, so you instead have to do calculations so you can set the normal Width and Height properties.
BorderSize = Me.Width - Me.ScaleWidth
Me.Width = BorderSize + CorrectScaleWidth
//Same for height!