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.
Related
In a C# Windows Forms app, I have a Form with a Panel with a PictureBox on it. The PictureBox is twice as wide as the Panel and has a graphics drawing in it. On scaling etc. I set AutoScrollPosition to keep the section of interest in the middle of the Panel: no problem. My problem is: when the app starts I want the Panel to show a section in the middle of the drawing, rather than the left hand side.
In the Form constructor I have:
panel1.AutoScroll = true;
panel1.AutoScrollPosition = new Point(100, 0);
textBox1.Text = panel1.AutoScrollPosition.ToString();
But on starting the app, the TextBox shows (0, 0) and the initial scroll position is at the left.
So, for test, I added a button which when pressed also executes:
panel1.AutoScrollPosition = new Point(100, 0);
textBox1.Text = panel1.AutoScrollPosition.ToString();
The TextBox then shows (100, 0) and the panel is scrolled as expected.
I makes no difference whether or not the AutoScrollPosition line is included in the constructor.
What must I do to initialise the scroll position without user interaction?
Finally solved it: you override OnLoad and set AutoScrollPosition in that, e.g.:
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
int yScroll = yToCentre - panel1.Height / 2;
panel1.AutoScrollPosition = new Point(0, yScroll);
}
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();
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.
I have some problems with basic drag and drop scrolling algorithm. Here is my algorithm:
When mouse pressed down i set boolean dragging = true and store the current mouse x and y position in stored_position variable.
When mouse up i set boolean dragging = false.
On each frame i check dragging == true and if it is i calculate the dx = current_mouse.x - stored_position.x and dy = current_mouse.x - stored_position.y. Then i store current mouse position as the new stored_position and scroll my view (it is 2d camera object) by this dx dy, as the Camera.x -= dx, Camera.y -= dy (i need the inversion one because of camera specific).
The problem with this algorithm is that when i drag the camera it starting to blink and move around/shake. I think it is because when i move my mouse from left to right it traces dx like this:
71
-67
69
-68
69
-68
8
-5
So i think it is the mouse twitching(i mean the mouse is jumps back sometimes when we try to draw a line). Any idea of changing algorithm, maybe i miss something?
Here is example of this problem: https://dl.dropbox.com/u/78904724/as_host/buld_build_other.rar (you need to run the index.html chose the level and try to drag the screen).
Updated
Here is the example full source link (this is the random picture, i swear): https://dl.dropbox.com/u/78904724/as_host/scroll_test.rar
And this is the code i used (in example i use native flash events instead of using axgl checks to not confuse someone, i have both examples and it cause the same problems):
//variables with comments
private var dragging:Boolean = false; //dragging flag
private var current_mouse:Array; //stored mouse position array [0] - x, [1] - y
private var d:Array; //dx dy array [0] - x, [1] - y
[Embed(source = "test.jpg")] public static const _sprite:Class; //sprite graphics
private var view_sprite:AxSprite; //some image on the stage to drag it
//this is the class constructor code
view_sprite = new AxSprite(0, 0, _sprite);
add(view_sprite);
current_mouse = new Array();
d = new Array();
Ax.stage2D.addEventListener(MouseEvent.MOUSE_DOWN, function(e:MouseEvent):void {
current_mouse[0] = Ax.mouse.x;
current_mouse[1] = Ax.mouse.y;
dragging = true;
});
Ax.stage2D.addEventListener(MouseEvent.MOUSE_UP, function(e:MouseEvent):void {
dragging = false;
});
Ax.stage2D.addEventListener(MouseEvent.MOUSE_MOVE, function(e:MouseEvent):void {
if (dragging) {
d[0] = Ax.mouse.x - current_mouse[0];
d[1] = Ax.mouse.y - current_mouse[1];
Ax.camera.x -= d[0];
Ax.camera.y -= d[1];
current_mouse[0] = Ax.mouse.x;
current_mouse[1] = Ax.mouse.y;
}
});
I am totally confused but the problem was this two strings(thanks the axgl author for helping me):
current_mouse[0] = Ax.mouse.x;
current_mouse[1] = Ax.mouse.y;
And when i remove them the dragging will work perfectly. But... I swear i tried this before and nothing gonna happed, camera just started to move faster without this and now... it works!
Thank you all for trying to help my. If someone would have the similar problems here is the full worked source: https://dl.dropbox.com/u/78904724/as_host/scroll_test_worked.rar
And this is the thread on axgl.org: http://axgl.org/forums/viewtopic.php?f=12&p=394