It seems not all bindings are to evaluated when printing. For example, in the code below, only the first button has content = "100", other buttons have content = "0".
var doc = new XpsDocument("test.xps",FileAccess.Write);
var writer = XpsDocument.CreateXpsDocumentWriter(doc);
var collator = writer.CreateVisualsCollator();
collator.BeginBatchWrite();
for (int i = 0; i < 3; i++)
{
var button = new Button();
button.SetBinding(ContentControl.ContentProperty,
new Binding
{
RelativeSource = new RelativeSource(RelativeSourceMode.Self),
Path = new PropertyPath("ActualWidth")
});
button.Measure(new Size(100, 100));
button.Arrange(new Rect(0, 0, 100, 100));
button.Width = 100;
button.Height = 100;
collator.Write(button);
}
collator.EndBatchWrite();
doc.Close();
Is there a workaround?
For example, is there a way to force the binding to evaluate?
Have you tried making sure the dispatcher is idle before the call to collator.EndBatchWrite().
Something like:
Dispatcher.CurrentDispatcher.Invoke(
new Action( delegate { } ), DispatcherPriority.ApplicationIdle, null );
Related
I use this in code behind to test how to add a grid splitter programmatically. (I know, don't use code behind - But this is one of those rare cases I need to. (I think))
public partial class ContainerView : Window, IContainerView
{
[ImportingConstructor]
public ContainerView()
{
InitializeComponent();
SetUp();
}
public void SetUp()
{
_grid = new Grid();
//Single column/single row
_grid.ColumnDefinitions.Add(new ColumnDefinition());
_grid.ColumnDefinitions.Add(new ColumnDefinition());
_grid.ColumnDefinitions.Add(new ColumnDefinition());
_grid.RowDefinitions.Add(new RowDefinition());
_grid.RowDefinitions.Add(new RowDefinition());
var button1 = new Button();
button1.Content = "Btn 1";
button1.Margin = new Thickness(5);
Grid.SetRow(button1, 0);
Grid.SetColumn(button1, 0);
var button2 = new Button();
button2.Content = "Btn 2";
button2.Margin = new Thickness(5);
Grid.SetRow(button2, 1);
Grid.SetColumn(button2, 2);
_grid.Children.Add(button1);
_grid.Children.Add(button2);
var splitterV = new GridSplitter();
Grid.SetRowSpan(splitterV, _grid.RowDefinitions.Count);
splitterV.VerticalAlignment = VerticalAlignment.Stretch;
splitterV.HorizontalAlignment = HorizontalAlignment.Right;
splitterV.ShowsPreview = true;
splitterV.Background = Brushes.Black;
Width = 5;
_grid.Children.Add(splitterV);
Grid.SetColumn(splitterV, 1);
Content = _grid;
}
I can see the two buttons, but the middle column is empty. The GridSplitter is not shown. What am I doing wrong?
You are absolutely correct but you are setting Window's width instead of GridSpitter's width & also you have to give it's ResizeBehaviour.
Instead of this :
Width = 5;
Set GridSpitter's Width & It's ResizeBehavior as :
splitterV.ResizeBehavior = GridResizeBehavior.PreviousAndNext;
splitterV.Width = 5;
I am dynamically adding a button in Telerik RadListView. But the buttons are not wrapping the text.
Here is my code:
this.radBtnProduct = new RadButtonElement();
this.radBtnProduct.TextElement.Size = new Size(100,60); // .TextWrap = true;
this.radBtnProduct.Location = new Point(0, 0);
this.radBtnProduct.MinSize = new Size(100, 60);
this.radBtnProduct.MinSize = new Size(100, 60);
// wrapping
this.radBtnProduct.TextWrap = true;
Any help is appreciated
EDIT:
I used this code
this.radBtnProduct.Text = this.dataItem.Text.Replace(" ", "\n");
But am not sure if there are some issues with it
By default RadButtonElement has its AutoSize turned on. You need to switch it off in order to make your size work. Try this:
this.radBtnProduct = new RadButtonElement();
this.radBtnProduct.AutoSize = false;
this.radBtnProduct.Size = new Size(100, 60); // .TextWrap = true;
this.radBtnProduct.TextWrap = true;
Is it possible to animate the "old school" way, in codebehind, instead of xaml?
I just want an arrow that points to something with a 'bounce effect' which I could easily do in my own for loop. But I do not know how to refresh or do a timer delay, inside the loop. I already placed the image into position in codebehind. All I want to do is this simple animation...
public void validationArrow()
{
var validationArrow = new Image();
validationArrow.Source = new BitmapImage(new Uri("/SlProject;component/arrow.png", UriKind.RelativeOrAbsolute));
LayoutRoot.Children.Add(validationArrow);
validationArrow.Stretch = Stretch.None;
validationArrow.VerticalAlignment = System.Windows.VerticalAlignment.Top;
validationArrow.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
var arrowPosition = new TranslateTransform { X = 0, Y = 0 };
validationArrow.RenderTransform = arrowPosition;
validationArrow.Name = "validationArrow";
for (int i = 150; i >= 0; i--)
{
arrowPosition.X = i;
validationArrow.RenderTransform = arrowPosition;
// how can I refresh screen and do some timing here?
}
}
There's no school like the old school ;)
Here, this should help you on your way. You can play with the millisecond and Y translation values being passed to the BuildEasing method to change the 'bounce' effect's speed and distance.
private void RunStoryboard()
{
var arrowImage = new Image();
arrowImage.RenderTransform = new CompositeTransform();
arrowImage.Source = new BitmapImage(new Uri("/SlProject;component/arrow.png", UriKind.RelativeOrAbsolute));
LayoutRoot.Children.Add(arrowImage);
Storyboard storyboard = new Storyboard();
storyboard.Children.Add(BuildKeyFrame(arrowImage));
storyboard.Begin();
}
private DoubleAnimationUsingKeyFrames BuildKeyFrame(Image target)
{
DoubleAnimationUsingKeyFrames kf = new DoubleAnimationUsingKeyFrames();
Storyboard.SetTarget(kf, target);
Storyboard.SetTargetProperty(kf, new PropertyPath("(UIElement.RenderTransform).(CompositeTransform.TranslateY)"));
kf.KeyFrames.Add(BuildEasing(100, 10));
kf.KeyFrames.Add(BuildEasing(200, 0));
kf.KeyFrames.Add(BuildEasing(300, 10));
kf.KeyFrames.Add(BuildEasing(400, 0));
kf.KeyFrames.Add(BuildEasing(500, 10));
kf.KeyFrames.Add(BuildEasing(600, 0));
return kf;
}
private EasingDoubleKeyFrame BuildEasing(int ms, int value)
{
return new EasingDoubleKeyFrame()
{
KeyTime = KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0, ms)),
Value = value
};
}
In WPF, I get a tooltip to appear immediately like this:
TextBlock tb = new TextBlock();
tb.Text = name;
ToolTip tt = new ToolTip();
tt.Content = "This is some info on " + name + ".";
tb.ToolTip = tt;
tt.Cursor = Cursors.Help;
ToolTipService.SetInitialShowDelay(tb, 0);
This makes the user experience better since if the user wants to look at the tooltips of five items on the page, he doesn't have to wait that long second for each one.
But since Silverlight does not have SetInitialShowDelay, what is a workaround to make the tooltip appear immediately?
You'll need to hook the MouseEnter event and show it straight away yourself:-
TextBlock tb = new TextBlock();
tb.Text = name;
ToolTip tt = new ToolTip();
tt.Content = "This is some info on " + name + ".";
ToolTipService.SetToolTip(tb, tt);
tb.MouseEnter += (s, args) => {
((ToolTip)ToolTipService.GetToolTip((DependencyObject)s)).IsOpen = true;
};
Other than re-implementing the mouse enter (or the whole tooltip service), I'm afraid you might be out of luck - the delay you see is actually hard-coded into the "OnOwnerMouseEnter" method of the TooltipService:
(courtesy of Reflector)
TimeSpan span = (TimeSpan) (DateTime.Now - _lastToolTipOpenedTime);
if (TimeSpan.Compare(span, new TimeSpan(0, 0, 0, 0, 100)) <= 0)
{
OpenAutomaticToolTip(null, EventArgs.Empty);
}
else
{
if (_openTimer == null)
{
_openTimer = new DispatcherTimer();
_openTimer.Tick += new EventHandler(ToolTipService.OpenAutomaticToolTip);
}
_openTimer.Interval = new TimeSpan(0, 0, 0, 0, 400);
_openTimer.Start();
}
I'm trying to fade in a new control to my application's "app" area which is programmatically added after the existing controls are removed. My code looks like this:
void settingsButton_Clicked(object sender, EventArgs e)
{
ContentCanvas.Children.Clear();
// Fade in settings panel
NameScope.SetNameScope(this, new NameScope());
SettingsPane s = new SettingsPane();
s.Name = "settingsPane";
this.RegisterName(s.Name, s);
this.Resources.Add(s.Name, s);
Storyboard sb = new Storyboard();
DoubleAnimation settingsFade = new DoubleAnimation();
settingsFade.From = 0;
settingsFade.To = 1;
settingsFade.Duration = new Duration(TimeSpan.FromSeconds(0.33));
settingsFade.RepeatBehavior = new RepeatBehavior(1);
Storyboard.SetTargetName(settingsFade, s.Name);
Storyboard.SetTargetProperty(settingsFade, new PropertyPath(UserControl.OpacityProperty));
ContentCanvas.Children.Add(s);
sb.Children.Add(settingsFade);
sb.Begin();
}
However, when I run this code, I get the error "No applicable name scope exists to resolve the name 'settingsPane'."
What am I possibly doing wrong? I'm pretty sure I've registered everything properly :(
I wouldn't hassle with the NameScopes etc. and would rather use Storyboard.SetTarget instead.
var b = new Button() { Content = "abcd" };
stack.Children.Add(b);
var fade = new DoubleAnimation()
{
From = 0,
To = 1,
Duration = TimeSpan.FromSeconds(5),
};
Storyboard.SetTarget(fade, b);
Storyboard.SetTargetProperty(fade, new PropertyPath(Button.OpacityProperty));
var sb = new Storyboard();
sb.Children.Add(fade);
sb.Begin();
I solved the problem using this as parameter in the begin method, try:
sb.Begin(this);
Because the name is registered in the window.
I agree, the namescopes are probably the wrong thing to use for this scenario. Much simpler and easier to use SetTarget rather than SetTargetName.
In case it helps anyone else, here's what I used to highlight a particular cell in a table with a highlight that decays to nothing. It's a little like the StackOverflow highlight when you add a new answer.
TableCell cell = table.RowGroups[0].Rows[row].Cells[col];
// The cell contains just one paragraph; it is the first block
Paragraph p = (Paragraph)cell.Blocks.FirstBlock;
// Animate the paragraph: fade the background from Yellow to White,
// once, through a span of 6 seconds.
SolidColorBrush brush = new SolidColorBrush(Colors.Yellow);
p.Background = brush;
ColorAnimation ca1 = new ColorAnimation()
{
From = Colors.Yellow,
To = Colors.White,
Duration = new Duration(TimeSpan.FromSeconds(6.0)),
RepeatBehavior = new RepeatBehavior(1),
AutoReverse = false,
};
brush.BeginAnimation(SolidColorBrush.ColorProperty, ca1);
It is possible odd thing but my solution is to use both methods:
Storyboard.SetTargetName(DA, myObjectName);
Storyboard.SetTarget(DA, myRect);
sb.Begin(this);
In this case there is no error.
Have a look at the code where I have used it.
int n = 0;
bool isWorking;
Storyboard sb;
string myObjectName;
UIElement myElement;
int idx = 0;
void timer_Tick(object sender, EventArgs e)
{
if (isWorking == false)
{
isWorking = true;
try
{
myElement = stackObj.Children[idx];
var possibleIDX = idx + 1;
if (possibleIDX == stackObj.Children.Count)
idx = 0;
else
idx++;
var myRect = (Rectangle)myElement;
// Debug.WriteLine("TICK: " + myRect.Name);
var dur = TimeSpan.FromMilliseconds(2000);
var f = CreateVisibility(dur, myElement, false);
sb.Children.Add(f);
Duration d = TimeSpan.FromSeconds(2);
DoubleAnimation DA = new DoubleAnimation() { From = 1, To = 0, Duration = d };
sb.Children.Add(DA);
myObjectName = myRect.Name;
Storyboard.SetTargetName(DA, myObjectName);
Storyboard.SetTarget(DA, myRect);
Storyboard.SetTargetProperty(DA, new PropertyPath("Opacity"));
sb.Begin(this);
n++;
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message + " " + DateTime.Now.TimeOfDay);
}
isWorking = false;
}
}