So, here is my problem. I have a JPanel, with a JLabel on it, and what I want is once that JLabel is clicked, it should resize, (ideally it will change with it's scale, but for now I am using a constant value). I have returned the image, and I now that I am able to scale it, but I just cant manage to make the original JLabel become the newly sized one.
So this is what should happen ideally, e.getSource should become the newly increased in size JLabel.
I know I'm pretty close, I did a JOptionPane as a debug statement to see if I can increase the size, and I can.
Why cant ((JLabel)me.getSource = a;
where a is my new JLabel?
Anyways, here is my code:
Please help me out.
public void mousePressed(MouseEvent me) {
//GreetingCard.setBackground.findComponentAt(me.getX(), me.getY());
//GreetingCard.setBackground.findComponentAt(me.getX(), me.getY)
JLabel a= (JLabel) me.getSource();
Icon icon = a.getIcon();
int scale = 4;
BufferedImage bi = new BufferedImage(
scale*icon.getIconWidth(),
scale*icon.getIconHeight(),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = bi.createGraphics();
g.scale(scale,scale);
icon.paintIcon(null,g,0,0);
g.dispose();
JLabel temp = new JLabel(new ImageIcon(bi));
((JLabel)me.getSource())= temp;
JOptionPane.showMessageDialog(
null,
new JLabel(new ImageIcon(bi)));
System.out.println("The size of the image is" + b.getIconWidth());
initiateEvent = me;
me.consume();
}
me.getSource() returns a JLabel, it doesn´t return a variable you can assign a new value.
Probably the best way is not to create a new JLabel but just assign the new ImageIcon to the old JLabel.
((JLabel)me.getSource()).setIcon(new ImageIcon(bi));
You also need to call label or panel updateUI() to force a "hard" repaint with resizing.
Related
I've made a lot of research on this subject but everything I find is everytime "use the function getOverContent of the stamper". I made this and it still not working.
I made a programm which merge together the PDFs of a repertory, than it paginates this new document (I hope you can follow what I'm writting). The original PDFs are self made (direct saved in PDF) or not (scanned). That's with these last ones where there are trouble. The pagination shows on the firsts but not on the seconds (it exists probably, but it should be behind the image)!
Here is the code for the pagination, has someone THE idea, where I'm mistaken?
PdfReader reader = new PdfReader(source);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(destination));
for (int i = start + 1; i <= reader.getNumberOfPages(); i++) {
Phrase noPage = new Phrase((i - start) + "", new Font(FontFamily.COURIER, 14));
float x = reader.getPageSize(i).getRight(20);
float y = reader.getPageSize(i).getTop(20);
PdfContentByte content = stamper.getOverContent(i);
content.beginText();
ColumnText.showTextAligned(content,Element.ALIGN_CENTER, noPage, x, y, 0);
content.endText();
}
stamper.close();
reader.close();
Thanks
After Answer from Bruno, I've made the following:
PdfReader reader = new PdfReader(source);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(destination));
for (int i = start + 1; i <= reader.getNumberOfPages(); i++) {
Phrase noPage = new Phrase((i - start) + "", new Font(FontFamily.COURIER, 14));
float x = reader.getCropBox(i).getRight(20);
float y = reader.getCropBox(i).getTop(20);
PdfContentByte content = stamper.getOverContent(i);
ColumnText.showTextAligned(content,Element.ALIGN_CENTER, noPage, x, y, 0);
}
stamper.close();
reader.close();
But it's still not working
For examples: https://www.transfernow.net/24axn1g4wq4l
The original PDFs are self made (direct saved in PDF) or not (scanned). That's with these last ones where there are trouble. The pagination shows on the firsts but not on the seconds (it exists probably, but it should be behind the image)!
The problem is not that the second type of PDFs is scanned but that it uses page rotation.
When a page is rotated, iText inserts a coordinate system rotation instruction at the start of the undercontent and overcontent which ensures that any text drawn without further transformation is displayed upright on the rotated page.
This rotation of the coordinate system obviously needs to be considered when choosing absolute coordinates.
Thus, instead of
reader.getPageSize(i)
you should use
reader.getPageSizeWithRotation(i)
Alternatively you can switch of this iText mechanism using
stamper.setRotateContents(false);
and then consider the presence of page rotation explicitly in all your following operations.
I need a MenuBar on the left side of my screen that can slide in and out. As this app is crossplattform it should be on the left side and not like the usual ApplicationBar on the Bottom or NavigationBar on Top.
What I have so far is:
private bool isTapped = false;
private void TEST_TAP(object sender, TappedRoutedEventArgs e)
{
System.Diagnostics.Debug.WriteLine("TAP");
Storyboard s = new Storyboard();
DoubleAnimation doubleAni = new DoubleAnimation();
doubleAni.To = -30;
if (isTapped) doubleAni.To = 0;
doubleAni.Duration = new Duration(TimeSpan.FromMilliseconds(500));
Storyboard.SetTarget(doubleAni, LOGO);
Storyboard.SetTargetProperty(doubleAni, "(UIElement.RenderTransform).(TranslateTransform.XProperty)");
s.Children.Add(doubleAni);
s.Begin();
}
The bar I want to move is a Grid or should be something similar. But this even fails to move a single Image. I googled a bit and replaced "(UIElement.RenderTransform).(TranslateTransform.XProperty)" with "(Canvas.Left)". This doesn't crash but also doesn't move anything else.
Any ideas or solutions?
EDIT:
Well I played around a lot and now I know (and tested it) that "(Canvas.Left)" only works inside of a Canvas. Yay.
My App looks like this: Scrollview (horizontal) and inside is a Grid with columns to display different stuff. The left-most Column contains another Grid that I want to move out of the screen and back in again. But how do I move a grid with Storyboard-animation?
If anybody thinks of a different way to do this, I'm totally happy if it works in any way.
EDIT2:
It seems to be THE way to use Storyboard.SetTargetProperty(doubleAni, "(UIElement.RenderTransform).(CompositeTransform.TranslateX)"); but it keeps crashing =/
Before using this transform you need to add it:
Storyboard s = new Storyboard();
DoubleAnimation doubleAni = new DoubleAnimation();
doubleAni.To = to;
doubleAni.From = from;
doubleAni.Duration = new Duration(TimeSpan.FromMilliseconds(250));
// THIS LINE IS NEW
NaviBar.RenderTransform = new CompositeTransform();
Storyboard.SetTarget(doubleAni, NaviBar);
Storyboard.SetTargetProperty(doubleAni, "(UIElement.RenderTransform).(CompositeTransform.TranslateX)");
s.Children.Add(doubleAni);
s.Begin();
This does the trick. It's still not the functionality that I wanted but the hardest part - the animation - works now.
I want to restore the position and size of my LibGDX application (LwjglApplication) window when started again.
I know that I can use LwjglApplicationConfiguration to set the position of the window before creating it as follows:
LwjglApplicationConfiguration cfg = new LwjglApplicationConfiguration();
cfg.x = lastX;
cfg.y = lasty;
LwjglApplication a = new LwjglApplication(new MyGame(), cfg);
But how can I read the last position of the window before quitting? The user might have moved and resized the window while playing my game. How to save the data?
Thanks a lot!
The only way I found is to use the LWJGL class Display (Javadoc) with methods getX() and getY() as you can see here:
int x = Display.getX();
int y = Display.getY();
Can somebody help me with the following code snippet to capture part of or the whole desktop on OSX ? I would like to specify the upper-left corner coordinates (x,y) and the width (w) and height (h) of the rectangle that defines the capture.
It's for a C# MonoMac application on OSX.
This is what I've done:
int windowNumber = 2;
System.Drawing.RectangleF bounds = new RectangleF(0,146,320,157);
CGImage screenImage = MonoMac.CoreGraphics.CGImage.ScreenImage(windowNumber,bounds);
MonoMac.Foundation.NSData bitmapData = screenImage.DataProvider.CopyData();
It looks like I have the bitmap data in 'bitmapData', but I'm not sure how I convert the NSData instance 'bitmapData' to an actual Bitmap; i.e. :
Bitmap screenCapture = ????
The documentation is really sparse and I've googled for examples without luck. So I'm hoping that there's a kind MonoMac expert out there who can point me in the right direction? - An example would be nice :o)
Thank you in advance!
This will give you the bytes of your capture in a .NET byte[], from where you can create a Bitmap or Image or whatever you want. Might not be exactly what you are looking for but should put you in the right direction.
int windowNumber = 2; System.Drawing.RectangleF bounds = new RectangleF(0,146,320,157);
CGImage screenImage = MonoMac.CoreGraphics.CGImage.ScreenImage(windowNumber,bounds);
using(NSBitmapImageRep imageRep = new NSBitmapImageRep(screenImage))
{
NSDictionary properties = NSDictionary.FromObjectAndKey(new NSNumber(1.0), new NSString("NSImageCompressionFactor"));
using(NSData tiffData = imageRep.RepresentationUsingTypeProperties(NSBitmapImageFileType.Png, properties))
{
byte[] imageBytes;
using(var ms = new MemoryStream())
{
tiffData.AsStream().CopyTo(ms);
imageBytes = ms.ToArray();
}
}
}
I am using the windows phone emulator. I wrote a very simple program: draw a marker on the map when the user tap the map once.
Then I used map_tap event, and get the tapped location as follows,
private void map_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
Point p = e.GetPosition(null);
GeoCoordinate s = map.ConvertViewportPointToGeoCoordinate(p);
Ellipse myCircle = new Ellipse();
myCircle.Fill = new SolidColorBrush(Colors.Blue);
myCircle.Height = 20;
myCircle.Width = 20;
myCircle.Opacity = 50;
MapOverlay myLocationOverlay = new MapOverlay();
myLocationOverlay.Content = myCircle;
myLocationOverlay.PositionOrigin = new Point(0, 0);
myLocationOverlay.GeoCoordinate = s;
MapLayer myLocationLayer = new MapLayer();
myLocationLayer.Add(myLocationOverlay);
map.Layers.Add(myLocationLayer);
}
The problem is that, the point I get is not the point where the mouse (in the emulator it is a mouse but not a finger) clicked. It is some distance lower (about 50 pixels lower) than where I clicked.
So wherever I click in the emulator, the circle is drawn below where I clicked, it's some kind of weird.
Is there anything wrong with my code?
Thank you very much.
The GestureEventArgs.GetPosition() method takes a parameter specifying what UIElement to get the coordinate relative to (see the MSDN documentation). So, try doing
Point p = e.GetPosition(map);
instead.