I need to figure out how to change the UserControl's Width and Height at runtime. I am trying to do this during a mouseMove event. The Width and Height are set to Auto in XAML.
'mouseDown event
mouseVerticalPosition = e.GetPosition(Nothing).Y
mouseHorizontalPosition = e.GetPosition(Nothing).X
'mouseMove event
Dim deltaV As Double = e.GetPosition(Nothing).Y - mouseVerticalPosition
Dim deltaH As Double = e.GetPosition(Nothing).X - mouseHorizontalPosition
Me.Width = Me.Width + deltaH
UpdateLayout() 'does not work
This code is inside of the UserControl not the Page where the UserControl lives - if that helps.
Consider the container and it's properties - auto and stretch are used here:
<Grid x:Name="LayoutRoot" Background="Transparent" >
<Canvas Name="cnv" Margin="18">
<Rectangle Name="Rect" Margin="0" />
</Canvas>
</Grid>
The actual numeric value of an Auto setting on Width or Height is Double.NaN. When you add anything to that initial NaN value the result will always still be NaN. You can either use ActualWidth/ActualHeight instead as the number to add to or try adding a Double.IsNaN check before you set the value and if true just use ActualWidth/ActualHeight.
Related
Referring to the picture, I would like to align a dynamically created TButton at runtime right next to a BindNavigator.
TButton *Add_But;
Add_But = new TButton(this);
Add_But->Visible = true;
Add_But->Text = "Add";
//Add_But->Position->X = 300;
//Add_But->Position->Y = 350;
Add_But->Parent=Form1->BindNavigator1;
Form1->Frame1->AddObject(Form1->StringGridBindSourceDB1);
Form1->Frame1->AddObject(Form1->BindNavigator1);
Form1->Frame1->AddObject(Add_But);
Add_But->Align=Fmx::Types::TAlignLayout::Right;
If I execute the above code, the Add_But button would align next to BindNavigator enclosed portion of the area between the last three buttons starting from the refresh button. Positioning Add_But using X,Y is not the ideal solution as I would like the Add_But to space out by certain margin padding just by using the Align property.
How to programmatically construct a TBounds margin object to resolve the issue?
Not Optimum solution using Two FlowLayout ,Believe TGridPanelLayout is much better choice , quite difficult to code correctly at runtime on cell position placement as the Main Frame is Just An Empty container refresh to hold Any child item based on selection
TFlowLayout *tlayout=new TFlowLayout(this);
tlayout->AddObject(Form1->StringGridBindSourceDB1);
TFlowLayout *tlayout1=new TFlowLayout(this);
// approximate the size of the TGrid
tlayout1->Width=600;
tlayout1->AddObject(Form1->BindNavigator1);
Add_But->Margins->Left = 10;
tlayout1->AddObject(Add_But);
tlayout->AddObject(tlayout1);
Form1->Frame1->AddObject(tlayout);
I have not written any apps in FMX but I saw no reason why you could not simply drop a TPanel on your FMX form then drop a TBindNavigator onto the TPanel unless there is a reason it can't be done this way, just trying to help.
This code works fine in Builder 10.3 on FMX Form
TButton *b = new TButton(TPanel1);
b->Parent = TPanel1;
b->Visible = true;
b->Position->X = TBindNavigator1->Width + 25;
b->Position->Y = TPanel1->Height / 2 - b->Height / 2;
b->Width = b->Width * 2;
b->Text = "Runtime Button";
How it looks when you run the code
I have been trying add custom inline styles for the cells where double underline is applied. My plan was to get the cell where the double underline is aplied and using its indexes find the currosponding td and then aplly custom style/tag.
Currently i am able to find the row and column indexes but if at all i find the row and colum index how can i find the currosponding td in the html string ?
Is there any way to find td using the row and column index ?
Is there any way to get this done, please let me know.
To apply a double underline border style to a cell / range by using the setBorder method with the LineStyle double and the borderBottom method
For example, to set a double underline to the cell A1:
window.onload = function (dashboard) {
// Initialize the Spread component with the following line:
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"));
var activeSheet = spread.getActiveSheet();
// create line border
var border = new GC.Spread.Sheets.LineBorder();
border.color = "red";
// line style = double
border.style = GC.Spread.Sheets.LineStyle.double;
var cell = activeSheet.getCell(0, 0, GC.Spread.Sheets.SheetArea.viewport);
// setting the border to the bottom
cell.borderBottom(border);
};
If you have any other questions feel free to reach out to the SpreadJS Support Team here: Submit a ticket
Best, Mackenzie Albitz | GrapeCity Technical Engagement Engineer
I have a specific video-player which is embedded with an iframe. It has a toolbar at the bottom with a fixed height of 30px.
The video-width is scaled within a bootstrap framework and I want to calculate the height based on the current width.
Like: videoHeight = (videoWidth * 0.5625) + 30px
The value 0.5625 is based on 16*9 aspect-ratio.
Now have I tried the following code:
$(document).ready(function() {
var wide = $('#video-container').css('width');
var calculate = parseInt(wide, 10) * 0.5625;
var videoheight = calculate + 30;
$('#video-container').css('height', videoheight);
});
It works partially, it does calculate the aspect-ratio correctly but it does not add the 30px. Can anybody tell me where I'm going wrong?
I want to get the height of the control which is loaded in DataTemplate when the width is set to 100. I have used the below code, but always returns the size 0,20. Any suggestion on this?
<DataTemplate x:Name="dataTemplate">
<Grid>
<TextBlock Text="{Binding Path=Name}" TextWrapping="Wrap"/>
</Grid>
</DataTemplate>
var record = new UserInfo() { Name = "ASKL ALASO DKADOLD ADKIKAM AMDKI ADKAI AKDKI" };
var contentControl = new ContentControl();
contentControl.Measure(new Size());
contentControl.Content = record;
contentControl.ContentTemplate = App.Current.Resources["dataTemplate"] as DataTemplate;
contentControl.Measure(new Size(100, Double.PositiveInfinity));
var size = contentControl.DesiredSize;
I have used the below code, but always returns the size 0,20. Any suggestion on this?
This is because you didn't render your ContentControl on the layout, you can render it for example like this:
var record = new UserInfo() { Name = "ASKL ALASO DKADOLD ADKIKAM AMDKI ADKAI AKDKI" };
var contentControl = new ContentControl();
stackPanel.Children.Add(contentControl); //Add this ContentControl to the childeren collection of a StackPanel to show it
//contentControl.Measure(new Size());
contentControl.Content = record;
contentControl.ContentTemplate = App.Current.Resources["dataTemplate"] as DataTemplate;
contentControl.Measure(new Size(100, Double.PositiveInfinity));
var size = contentControl.DesiredSize;
Then now, you can get the size of your ContentControl, by my side it is 94,100.
I'm not sure this size is the one you actually want, from your title, you want to calculate Height of any control which is loaded in DataTemplate, but this size is the size of ContentControl, I think what you need is the height of the Grid, or TextBlock inside of this ContentControl. To get this two control, you can code like this after the ContentControl is fully rendered:
var grid = contentControl.ContentTemplateRoot as Grid;
var textblock = grid.Children.FirstOrDefault() as TextBlock;
And be aware that the DesiredSize is not the rendered size of the control, you can refer to the Remarks part of UIElement.DesiredSize property.
I have trouble getting TreeView in GTK3 to wrap text correctly.
I set it up to wrap in this way:
Gtk::TreeViewColumn* pColumn = mTreeView.get_column(2);
static_cast<Gtk::CellRendererText *>(pColumn->get_first_cell())
->property_wrap_mode().set_value(Pango::WRAP_WORD_CHAR);
static_cast<Gtk::CellRendererText *>(pColumn->get_first_cell())
->property_wrap_width().set_value(200);
This works, text is wrapped, but when I resize the window and make it bigger, there is a lot of ugly white-space above and below cell with long text. It seems, that GTK reserves height for cell based on wrap width. Which makes no sense to me.
I tried to get around with setting needed in signal_check_resize with calculating needed width like this:
Gtk::TreeViewColumn* pColumn = mTreeView.get_column(2);
auto width = this->get_allocated_width()
- mTreeView.get_column(0)->get_width()
- mTreeView.get_column(1)->get_width();
static_cast<Gtk::CellRendererText *>(pColumn->get_first_cell())
->property_wrap_width().set_value(width-100);
this->forceRecreateModel = true; //Needed to work
But this lets me only make window bigger. It cannot be shrinked, after it was resized.
The question is, how this is properly done?
I am using gtk3.20.3-1 and gtkmm3.20.1-1 on Arch linux.
EDIT: fixed typo in the title...
In the end I found how to do it.
In the setup of the window (for me constructor of the window derived class) it was necessary to set column to be AUTOSIZE in order to allow shrinking of the width.
//Last Column setup
{
mTreeView.append_column("Translation", mColumns.mEnglish);
Gtk::TreeViewColumn* pColumn = mTreeView.get_column(2);
pColumn->set_sizing(Gtk::TreeViewColumnSizing::TREE_VIEW_COLUMN_AUTOSIZE);
static_cast<Gtk::CellRendererText *>(pColumn->get_first_cell())
->property_wrap_mode().set_value(Pango::WRAP_WORD_CHAR);
}
Also there is needed to set correct wrap width on every resize. Without this, height of the row was as big as it would be necessary for currently set wrap_width with no regard on current width (resulting in big padding on the top, when stretched more and prohibiting to make window smaller).
This code was also in the constructor.
this->signal_check_resize().connect([this]()
{
//calculate remaining size
Gtk::TreeViewColumn* pColumn = mTreeView.get_column(2);
auto width = this->get_allocated_width()
- mTreeView.get_column(0)->get_width()
- mTreeView.get_column(1)->get_width()-30;
//minimum reasonable size for column
if(width < 150)
width = 150;
static_cast<Gtk::CellRendererText *>(pColumn->get_first_cell())
->property_wrap_width().set_value(width);
//debounce
static auto oldsize = 0;
{
oldsize = width;
//trigger redraw of mTreeView (by clearing and refilling Model,
//it is done in 100ms pulse)
this->mRedrawNeeded = true;
}
});
And maybe it is worth noting, that I have mTreeView encapsulated in Gtk::ScrolledWindow. So this is a chunk which comes before column setup. :)
//in class is: Gtk::ScrolledWindow mScrollForResults;
//scrolling area
mGrid.attach(mScrollForResults, 0,2,10,1);
mScrollForResults.set_hexpand();
mScrollForResults.set_policy(Gtk::PolicyType::POLICY_AUTOMATIC,
Gtk::PolicyType::POLICY_ALWAYS);
mScrollForResults.set_margin_top(10);
mScrollForResults.set_min_content_width(400);
mScrollForResults.set_min_content_height(200);
mScrollForResults.add(mTreeView);
//results treeView
mRefListStore = Gtk::ListStore::create(mColumns);
mTreeView.set_model(mRefListStore);
mTreeView.set_hexpand();
mTreeView.set_vexpand();