When using AddManipulator, are touches routed to the new Manipulation? When I do the following, it all works but touches are left after the TouchLeave event. So for example if I do a single finger rotate, leave the touched element and touch it again, it becomes a two finger zoom.
private void HV3DTouchDown(object sender, TouchEventArgs e)
{
Canvas canvas = sender as Canvas
Manipulation.AddManipulator(canvas, e.TouchDevice.AsManipulator());
e.Handled = true;
CaptureTouch(e.TouchDevice);
}
private void HV3DTouchLeave(object sender, TouchEventArgs e)
{
Canvas canvas = sender as Canvas
Manipulation.RemoveManipulator(canvas, e.TouchDevice.AsManipulator());
e.Handled = true;
ReleaseTouchCapture(e.TouchDevice);
}
Related
While dragging rectangle object fast, dragging stops and cursor only moves. Without releasing button click button, moving the cursor on the rectangle object starts the dragging again. It is dragging fine when i drag on a constant speed.
My code is,
private void ConnectorMethod()
{
_draggedLine = new Rectangle();
_draggedLine.Width = 100;
_draggedLine.Height = 12;
_controlModel.PlayerCanvas.Children.Add(_draggedLine);
_draggedLine.PreviewMouseLeftButtonDown += copy_Connector;
_draggedLine.PreviewMouseLeftButtonUp += connector_leftUp;
}
private void copy_Connector(object sender, MouseButtonEventArgs e)
{
_connecting_Connector = (Rectangle)sender;
_Connector_position = e.GetPosition(_connecting_Connector);
_connecting_Connector.PreviewMouseMove += ConnectorMouseMove;
}
private void connector_leftUp(object sender, MouseButtonEventArgs e)
{
_connecting_Connector.PreviewMouseMove -= ConnectorMouseMove;
}
private void ConnectorMouseMove(object sender, MouseEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
Point canvasRelativePosition = e.GetPosition(_controlModel.PlayerCanvas);
Canvas.SetTop(_connecting_Connector, canvasRelativePosition.Y - _Connector_position.Y);
Canvas.SetLeft(_connecting_Connector, canvasRelativePosition.X - _Connector_position.X);
e.Handled = true;
}
}
Thanks in Advance.
I have fixed it with implementation canvas rectangle object in
I want to draw something on my canvas whenever drawing_mode and is_drawing booleans are on. Right now I am using a polyline list and BackgroundWorker for threading. My main problem is that my code only creates one polyline and the dots are ALWAYS connected. In other words I can stop drawing for a while but then wherever I click a new line connection is made with the previous one. The end result is that my canvas.Children only has one polyline element with all the points. Could anyone help me solve this?
P.S. I am not very good with threading yet...
private BackgroundWorker drawing_worker;
private void drawing_worker_ProgressChanged(object sender, ProgressChangedEventArgs eventargs)
{
Polyline polyline = new Polyline();
polyline.Points = last_polyline.Points;
canvas.Children.Remove(last_polyline);
var pos = canvas_relative_pos;
polyline.Points.Add(pos);
polyline.Stroke = new SolidColorBrush(Colors.Black);
polyline.StrokeThickness = 1;
canvas.Children.Add(polyline);
last_polyline = polyline;
}
private void drawing_worker_DoWork(object sender, DoWorkEventArgs eventargs)
{
while (drawing_mode_enabled && is_drawing)
{
drawing_worker.ReportProgress(0);
Thread.Sleep(5);
if (drawing_worker.CancellationPending) break;
}
}
private void ContentControl_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (drawing_mode_enabled)
{
is_drawing = true;
drawing_worker = new BackgroundWorker
{
WorkerReportsProgress = true,
WorkerSupportsCancellation = true
};
drawing_worker.ProgressChanged += drawing_worker_ProgressChanged;
drawing_worker.DoWork += drawing_worker_DoWork;
drawing_worker.RunWorkerAsync();
}
}
You don't need a BackgroundWorker or any other asynchronous stuff to draw polylines on Canvas.
Just create a Canvas with a Background (so that it gets input events) and handlers for the MouseLeftButtonDown, MouseLeftButtonUp and MouseMove events:
<Canvas Background="Transparent"
MouseLeftButtonDown="CanvasMouseLeftButtonDown"
MouseLeftButtonUp="CanvasMouseLeftButtonUp"
MouseMove="CanvasMouseMove"/>
In the mouse down handler create a new Polyline and add it to the Canvas. Also capture the mouse so that you get mouse move events even when the mouse cursor leaves the Canvas. In the mouse up handler release the mouse capture. Finally, in the mouse move handler, add points to the last polyline child of the Canvas.
private void CanvasMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var panel = (Panel)sender;
var polyline = new Polyline
{
Stroke = Brushes.Black,
StrokeThickness = 3
};
panel.Children.Add(polyline);
panel.CaptureMouse();
}
private void CanvasMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
((UIElement)sender).ReleaseMouseCapture();
}
private void CanvasMouseMove(object sender, MouseEventArgs e)
{
var panel = (Panel)sender;
if (panel.IsMouseCaptured)
{
var polyline = panel.Children.OfType<Polyline>().Last();
polyline.Points.Add(e.GetPosition(panel));
}
}
I can get mouse co-ordinates when mouse is down and up as
private void panel2_MouseDown(object sender, MouseEventArgs e)
{
mouseClickedX = e.X;
mouseClickedY = e.Y;
}
private void panel2_MouseUp(object sender, MouseEventArgs e)
{
mouseReleaseX = e.X;
mouseReleaseY = e.Y;
}
But I need the mouse co-ordinates continuously when mouse is down and move until mouse is up. I don't need co-ordinates when mouse move only but I need co-ordinates when mouse is down and move. How to do that?
EDIT:
private void panel2_MouseMove(object sender, MouseEventArgs e)
{
while (isDragging) {
mouseMoveX = e.X;
mouseMoveY = e.Y;
label1.Text = mouseMoveX.ToString();
label2.Text = mouseMoveY.ToString();
}
}
I am using isDragging true or false onmosueup and down but this just hang the application. Should I use timer or thread?
You need to handle MouseMove and check whether the mouse is down.
There are a few things you should do:
Add to your class a private boolean field called bool isDragging
In the MouseDown handler, set isDragging = true and this.Capture = true
In the MouseUp handler, set isDragging = false and this.Capture = false
Add a MouseMove handler. In it, check if (isDragging) and if it is true, respond as you wish. Your MouseMove handler will be supplied with the current mouse coords.
The use of Capture is important, because otherwise you can lose MouseMove and MouseUp messages.
I have a Window element that has WindowStyle="None" and AllowsTransparency="True", therefore it has no title bar and supports transparency.
I want the user to be able to move the Window to any position on the screen by left-clicking anywhere within the Window and dragging. The Window should drag along with the mouse as long as the left mouse button is pressed down.
I was able to get this functionality to work with one exception: when the mouse moves outside of the Window (such as when the left mouse button was pressed down near the edge of the Window and the mouse is moved quicly), the Window no longer captures the mouse position and does not drag along with the mouse.
Here is the code from the code-behind that I use to get the job done:
public Point MouseDownPosition { get; set; }
public Point MousePosition { get; set; }
public bool MouseIsDown { get; set; }
private void window_MyWindowName_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
MouseDownPosition = e.GetPosition(null);
MouseIsDown = true;
}
private void window_MyWindowName_MouseMove(object sender, MouseEventArgs e)
{
if (MouseIsDown)
{
MousePosition = e.GetPosition(null);
Left += MousePosition.X - MouseDownPosition.X;
Top += MousePosition.Y - MouseDownPosition.Y;
}
}
private void window_MyWindowName_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
MouseIsDown = false;
}
I think you are looking for this: Processing Global Mouse and Keyboard Hooks in C#
Url: Processing Global Mouse and Keyboard Hooks in C#
This class allows you to tap keyboard and mouse and/or to detect their activity even when an application runs in the background or does not have any user interface at all.
This class raises common .NET events with KeyEventArgs and MouseEventArgs, so you can easily retrieve any information you need.
There is an example and explain and demo to use.
Great tutorial!
Example:
UserActivityHook actHook;
void MainFormLoad(object sender, System.EventArgs e)
{
actHook= new UserActivityHook(); // crate an instance
// hang on events
actHook.OnMouseActivity+=new MouseEventHandler(MouseMoved);
actHook.KeyDown+=new KeyEventHandler(MyKeyDown);
actHook.KeyPress+=new KeyPressEventHandler(MyKeyPress);
actHook.KeyUp+=new KeyEventHandler(MyKeyUp);
}
Now, an example of how to process an event:
public void MouseMoved(object sender, MouseEventArgs e)
{
labelMousePosition.Text=String.Format("x={0} y={1}", e.X, e.Y);
if (e.Clicks>0) LogWrite("MouseButton - " + e.Button.ToString());
}
I believe you are reinventing the wheel. Search for "Window.DragMove".
Example:
private void title_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
this.DragMove();
}
Try it this way:
// method to convert from 'old' WinForms Point to 'new' WPF Point structure:
public System.Windows.Point ConvertToPoint(System.Drawing.Point p)
{
return new System.Windows.Point(p.X,p.Y);
}
// some locals you will need:
bool mid = false; // Mouse Is Down
int x=0, y=0;
// Mouse down event
private void MainForm_MouseDown(object sender, MouseButtonEventArgs e)
{
mid=true;
Point p = e.GetPosition(this);
x = (int)p.X;
y = (int)p.Y;
}
// Mouse move event
private void MainForm_MouseMove(object sender, MouseButtonEventArgs e)
{
if(mid)
{
int x1 = e.GetPosition(this).X;
int y1 = e.GetPosition(this).Y;
Left = x1-x;
Top = y1-y;
}
}
// Mouse up event
private void MainForm_MouseUp(object sender, MouseButtonEventArgs e)
{
mid = false;
}
I have a PictureBox that is inside a TabPage, and of course this TabPage is part of a TabView and this TabView is inside a Form. I want users be able to move this picture box within the tab page. For this I am using the MouseDown, MouseMove and MouseUp events of the picture box:
private void pictureBoxPackageView_MouseDown(object sender, MouseEventArgs e)
{
if (!_mapPackageIsMoving)
{
_mapPackageIsMoving = true;
}
}
private void pictureBoxPackageView_MouseMove(object sender, MouseEventArgs e)
{
if(_mapPackageIsMoving)
{
pictureBoxPackageView.Location = MousePosition; //This is not exact at all!
return;
}
//Some other code for some other stuff when picturebox is not moving...
}
private void pictureBoxPackageView_MouseUp(object sender, MouseEventArgs e)
{
if (_mapPackageIsMoving)
{
_mapPackageIsMoving = false; //Mouse button is up, end moving!
return;
}
}
But my problem lies in the MouseMove event. As soon as I move mouse after button down, the picture box jumps out of tab page's visible area.
I need to know how to handle the move only within the rectangle of the tab page, and if picture box is being dragged out of tab view's visible area, it shouldn't move anymore unless user brings the mouse inside the tab view's visible rectangle.
Any helps/tips will be appriciated!
You need a variable to hold the original position of the PictureBox:
Modified from a HansPassant answer:
private Point start = Point.Empty;
void pictureBoxPackageView_MouseUp(object sender, MouseEventArgs e) {
_mapPackageIsMoving = false;
}
void pictureBoxPackageView_MouseMove(object sender, MouseEventArgs e) {
if (_mapPackageIsMoving) {
pictureBoxPackageView.Location = new Point(
pictureBoxPackageView.Left + (e.X - start.X),
pictureBoxPackageView.Top + (e.Y - start.Y));
}
}
void pictureBoxPackageView_MouseDown(object sender, MouseEventArgs e) {
start = e.Location;
_mapPackageIsMoving = true;
}