Im using the following code to take a photo in my app, but when I accept the photo, the image gets stretched, but when I navigate away from that page, and towards it again the image resolution is correct however a part of the image is black. my question is how can I correctly display the image without it stretching.
CameraCaptureTask cam = new CameraCaptureTask();
cam.Completed += task_Completed;
cam.Show();
void task_Completed(object sender, PhotoResult e)
{
if (e.TaskResult == TaskResult.OK)
{
System.Windows.Media.Imaging.BitmapImage bmp = new System.Windows.Media.Imaging.BitmapImage();
bmp.SetSource(e.ChosenPhoto);
imgProfilePic.ImageSource = bmp;
}
and the xaml is:
<Button HorizontalAlignment="Center"
toolkit:TurnstileFeatherEffect.FeatheringIndex="2"
toolkit:TiltEffect.IsTiltEnabled="True"
x:Name="btnprofilepic"
Width="250"
HorizontalContentAlignment="Center"
VerticalContentAlignment="Center"
MouseLeave="btnprofilepic_MouseLeave"
Tap="imgProfilePic_Tap"
Margin="0,20,0,20"
Height="200" BorderThickness="0"
MouseLeftButtonUp="btnprofilepic_MouseLeftButtonUp"
MouseLeftButtonDown="btnprofilepic_MouseLeftButtonDown">
<Button.Background>
<ImageBrush x:Name="imgProfilePic"
Stretch="Fill" />
</Button.Background>
</Button>
In your xaml make strech = "Uniform" because fill will strech the image according to container ...
Related
It seems like it's quite complicated to load an image in runtime to a WPF window.
Image image;
image = new Uri("Bilder/sas.png", UriKind.Relative);
????.Source = new BitmapImage(image);
I'm trying this code, but I need some help to get it to work. I get some red lines below the code! I also wonder if I need to add some extra code inside the XAML code or is in enough with this:
<Image Height="200" HorizontalAlignment="Left" Margin="12,12,0,0" Name="image1"
Stretch="Fill" VerticalAlignment="Top" Width="350" />
Wonder because I have seen examples with sorces to the images inside the XAML tags.
EDIT:
I'm using this now:
var uri = new Uri("pack://application:,,,/sas.png");
var bitmap = new BitmapImage(uri);
image1.Source = bitmap;
The XAML:
<Grid Width="374">
<Image Height="200" HorizontalAlignment="Left" Margin="12,12,0,0" Name="image1" Stretch="Fill" VerticalAlignment="Top" Width="350" />
<Button Content="Start" Height="23" HorizontalAlignment="Left" Margin="12,226,0,0" Name="btnStart" VerticalAlignment="Top" Width="75" />
<Button Content="Land" Height="23" HorizontalAlignment="Left" Margin="287,226,0,0" Name="btnLand" VerticalAlignment="Top" Width="75" />
<ComboBox Height="23" HorizontalAlignment="Left" Margin="110,226,0,0" Name="cmbChangeRoute" VerticalAlignment="Top" Width="156" />
</Grid>
EDIT 2:
My issue is solved, this code works fine:
BitmapImage image = new BitmapImage(
new Uri("pack://application:,,,/Resources/" + company + ".png"));
image2.Source = image;
In WPF an image is typically loaded from a Stream or an Uri.
BitmapImage supports both and an Uri can even be passed as constructor argument:
var uri = new Uri("http://...");
var bitmap = new BitmapImage(uri);
If the image file is located in a local folder, you would have to use a file:// Uri. You could create such a Uri from a path like this:
var path = Path.Combine(Environment.CurrentDirectory, "Bilder", "sas.png");
var uri = new Uri(path);
If the image file is an assembly resource, the Uri must follow the the Pack Uri scheme:
var uri = new Uri("pack://application:,,,/Bilder/sas.png");
In this case the Visual Studio Build Action for sas.png would have to be Resource.
Once you have created a BitmapImage and also have an Image control like in this XAML
<Image Name="image1" />
you would simply assign the BitmapImage to the Source property of that Image control:
image1.Source = bitmap;
Make sure that your sas.png is marked as Build Action: Content and Copy To Output Directory: Copy Always in its Visual Studio Properties...
I think the C# source code goes like this...
Image image = new Image();
image.Source = (new ImageSourceConverter()).ConvertFromString("pack://application:,,,/Bilder/sas.png") as ImageSource;
and XAML should be
<Image Height="200" HorizontalAlignment="Left" Margin="12,12,0,0"
Name="image1" Stretch="Fill" VerticalAlignment="Top"
Source="../Bilder/sas.png"
Width="350" />
EDIT
Dynamically I think XAML would provide best way to load Images ...
<Image Source="{Binding Converter={StaticResource MyImageSourceConverter}}"
x:Name="MyImage"/>
where image.DataContext is string path.
MyImage.DataContext = "pack://application:,,,/Bilder/sas.png";
public class MyImageSourceConverter : IValueConverter
{
public object Convert(object value_, Type targetType_,
object parameter_, System.Globalization.CultureInfo culture_)
{
return (new ImageSourceConverter()).ConvertFromString (value.ToString());
}
public object ConvertBack(object value, Type targetType,
object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
Now as you set a different data context, Image would be automatically loaded at runtime.
I can't get why my canvas doesn't get pointer events. Below my code and a part of the XAML layout:
XAML
<Canvas
x:Name="cPad"
Canvas.ZIndex="99"
Grid.Column="0"
PointerPressed="Pad_PointerPressed">
<Rectangle
x:Name="rPicker"
Width="24"
Height="24"
Stroke="Black"
Fill="White"
StrokeThickness="3"/>
</Canvas>
C#
private void Pad_PointerPressed(object sender, PointerRoutedEventArgs e)
{
cPad.CapturePointer(e.Pointer);
var point = e.GetCurrentPoint(cPad).Position;
Canvas.SetLeft(rPicker, point.X);
Canvas.SetTop(rPicker, point.Y);
e.Handled = true;
}
The problem that rPicker moves only if I click on rPicker... But I need to Pad_PointerPressed executes for any point on canvas. How can I make it?
Set Canvas.Background property to Transparent to enable PointerPressed events:
<Canvas
...
Background="Transparent"
>
...
</Canvas>
I have Image on View that I can drag. But when I release the object it is moving for some time. How I can disable this?
My Xaml code:
<Image Grid.Column="0"
x:Name="CollageImg1"
Margin="370,469,1665,800"
Source="{Binding CollageImg1}"
RenderTransformOrigin="0.5,0.5"
ManipulationDelta="CollageImgage1_Manipulation"
Visibility="Visible">
<Image.RenderTransform>
<CompositeTransform />
</Image.RenderTransform>
</Image>
Method that uses for moving:
private void Manipulation(ManipulationDeltaRoutedEventArgs e, Image image)
{
CompositeTransform ct = (CompositeTransform)image.RenderTransform;
ct.TranslateX += e.Delta.Translation.X;// X move
ct.TranslateY += e.Delta.Translation.Y;// Ymove
}
Remove TranslateInertia from the ManipulationMode property of the Image.
E.g. set only TranslateX and TranslateY:
<Image ManipulationMode="TranslateX,TranslateY" ... />
I want to add some images or controls dynamically in my canvas control and for each control I want to get its gesture event. How I Would I get that what will be the best approach.
void AddText()
{
TextBlock name = new TextBlock();
name.Text = "This is text " + Count;
Random rnd1 = new Random();
name.Width = rnd1.Next(0, 400);
name.Height = rnd1.Next(0, 800);
var gl = GestureService.GetGestureListener(name);
gl.Tap += new EventHandler<GestureEventArgs>(GestureListener_Tap);
gl.Hold += new EventHandler<GestureEventArgs>(GestureListener_Hold);
canvas1.Children.Add(name);
}
private void GestureListener_Tap(object sender, GestureEventArgs e)
{
MessageBox.Show("I Am Tapped");
}
private void GestureListener_Hold(object sender, GestureEventArgs e)
{
MessageBox.Show("I Am Holded");
}
But in this way my all controls are placed on same place even I used random function for thier width and height. And other thing when I tap on any textblock that i created with this way. It calls all gesture events.
Unlike StackPanel, Canvas control behaves like absolute positioning in HTML/CSS. Each element will be given its own specific location on the page. With elements absolutely positioned, they don’t adjust. Elements will overlap, without having any positioning-related effect on its neighbors.
<Canvas>
<Rectangle Fill="Red" Width="100" Height="100" Canvas.Top="100" Canvas.Left="100" />
<Rectangle Fill="Orange" Width="100" Height="100" Canvas.Top="100" Canvas.Left="200" />
<Rectangle Fill="Green" Width="100" Height="100" Canvas.Top="200" Canvas.Left="100" />
<Rectangle Fill="Blue" Width="100" Height="100" Canvas.Top="200" Canvas.Left="200" />
</Canvas>
For each element in your Canvas, you will need to specify the Canvas.Top and Canvas.Left properties. Omitting these values will result in your elements being positioned in the top left corner of the Canvas, at position 0,0.
So you need to provide Left and Top properties as shown below,
Canvas.SetLeft(name, 50);
Canvas.SetTop(name, 100);
It seems like it's quite complicated to load an image in runtime to a WPF window.
Image image;
image = new Uri("Bilder/sas.png", UriKind.Relative);
????.Source = new BitmapImage(image);
I'm trying this code, but I need some help to get it to work. I get some red lines below the code! I also wonder if I need to add some extra code inside the XAML code or is in enough with this:
<Image Height="200" HorizontalAlignment="Left" Margin="12,12,0,0" Name="image1"
Stretch="Fill" VerticalAlignment="Top" Width="350" />
Wonder because I have seen examples with sorces to the images inside the XAML tags.
EDIT:
I'm using this now:
var uri = new Uri("pack://application:,,,/sas.png");
var bitmap = new BitmapImage(uri);
image1.Source = bitmap;
The XAML:
<Grid Width="374">
<Image Height="200" HorizontalAlignment="Left" Margin="12,12,0,0" Name="image1" Stretch="Fill" VerticalAlignment="Top" Width="350" />
<Button Content="Start" Height="23" HorizontalAlignment="Left" Margin="12,226,0,0" Name="btnStart" VerticalAlignment="Top" Width="75" />
<Button Content="Land" Height="23" HorizontalAlignment="Left" Margin="287,226,0,0" Name="btnLand" VerticalAlignment="Top" Width="75" />
<ComboBox Height="23" HorizontalAlignment="Left" Margin="110,226,0,0" Name="cmbChangeRoute" VerticalAlignment="Top" Width="156" />
</Grid>
EDIT 2:
My issue is solved, this code works fine:
BitmapImage image = new BitmapImage(
new Uri("pack://application:,,,/Resources/" + company + ".png"));
image2.Source = image;
In WPF an image is typically loaded from a Stream or an Uri.
BitmapImage supports both and an Uri can even be passed as constructor argument:
var uri = new Uri("http://...");
var bitmap = new BitmapImage(uri);
If the image file is located in a local folder, you would have to use a file:// Uri. You could create such a Uri from a path like this:
var path = Path.Combine(Environment.CurrentDirectory, "Bilder", "sas.png");
var uri = new Uri(path);
If the image file is an assembly resource, the Uri must follow the the Pack Uri scheme:
var uri = new Uri("pack://application:,,,/Bilder/sas.png");
In this case the Visual Studio Build Action for sas.png would have to be Resource.
Once you have created a BitmapImage and also have an Image control like in this XAML
<Image Name="image1" />
you would simply assign the BitmapImage to the Source property of that Image control:
image1.Source = bitmap;
Make sure that your sas.png is marked as Build Action: Content and Copy To Output Directory: Copy Always in its Visual Studio Properties...
I think the C# source code goes like this...
Image image = new Image();
image.Source = (new ImageSourceConverter()).ConvertFromString("pack://application:,,,/Bilder/sas.png") as ImageSource;
and XAML should be
<Image Height="200" HorizontalAlignment="Left" Margin="12,12,0,0"
Name="image1" Stretch="Fill" VerticalAlignment="Top"
Source="../Bilder/sas.png"
Width="350" />
EDIT
Dynamically I think XAML would provide best way to load Images ...
<Image Source="{Binding Converter={StaticResource MyImageSourceConverter}}"
x:Name="MyImage"/>
where image.DataContext is string path.
MyImage.DataContext = "pack://application:,,,/Bilder/sas.png";
public class MyImageSourceConverter : IValueConverter
{
public object Convert(object value_, Type targetType_,
object parameter_, System.Globalization.CultureInfo culture_)
{
return (new ImageSourceConverter()).ConvertFromString (value.ToString());
}
public object ConvertBack(object value, Type targetType,
object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
Now as you set a different data context, Image would be automatically loaded at runtime.