void XamlCanvas_MouseDown(object sender, MouseButtonEventArgs e)
{
var spt = e.GetPosition((FrameworkElement)Parent);
var pt = e.GetPosition(this);
var t = new CanvasTouch {
Handle = MouseId,
CanvasLocation = new PointF((float)pt.X, (float)pt.Y),
SuperCanvasLocation = new PointF((float)spt.X, (float)spt.Y),
Time = DateTime.UtcNow,
};
t.PreviousTime = t.Time;
t.CanvasPreviousLocation = t.CanvasLocation;
t.SuperCanvasPreviousLocation = t.SuperCanvasLocation;
_activeTouches[t.Handle] = t;
if (Content != null)
{
Content.TouchesBegan(new[] { t }, CanvasKeys.None);
}
}
void XamlCanvas_TouchDown(object sender, TouchEventArgs e)
{
var spt = e.GetTouchPoint((FrameworkElement)Parent);
var pt = e.GetTouchPoint(this);
var t = new CanvasTouch {
Handle = new IntPtr(e.TouchDevice.Id),
CanvasLocation = new PointF((float)pt.Position.X, (float)pt.Position.Y),
SuperCanvasLocation = new PointF((float)spt.Position.X, (float)spt.Position.Y),
Time = DateTime.UtcNow,
};
t.PreviousTime = t.Time;
t.CanvasPreviousLocation = t.CanvasLocation;
t.SuperCanvasPreviousLocation = t.SuperCanvasLocation;
_activeTouches[t.Handle] = t;
if (Content != null)
{
Content.TouchesBegan(new[] { t }, CanvasKeys.None);
}
}
void XamlCanvas_TouchDown(object sender, TouchEventArgs e)
{
var spt = e.GetTouchPoint ((FrameworkElement)Parent);
var pt = e.GetTouchPoint (this);
var t = new CanvasTouch {
Handle = new IntPtr (e.TouchDevice.Id),
CanvasLocation = new PointF ((float)pt.Position.X, (float)pt.Position.Y),
SuperCanvasLocation = new PointF ((float)spt.Position.X, (float)spt.Position.Y),
Time = DateTime.UtcNow,
};
t.PreviousTime = t.Time;
t.CanvasPreviousLocation = t.CanvasLocation;
t.SuperCanvasPreviousLocation = t.SuperCanvasLocation;
_activeTouches[t.Handle] = t;
if (Content != null) {
Content.TouchesBegan (new[] { t }, CanvasKeys.None);
}
}
void XamlCanvas_MouseDown(object sender, MouseButtonEventArgs e)
{
var spt = e.GetPosition ((FrameworkElement)Parent);
var pt = e.GetPosition (this);
var t = new CanvasTouch {
Handle = MouseId,
CanvasLocation = new PointF ((float)pt.X, (float)pt.Y),
SuperCanvasLocation = new PointF ((float)spt.X, (float)spt.Y),
Time = DateTime.UtcNow,
};
t.PreviousTime = t.Time;
t.CanvasPreviousLocation = t.CanvasLocation;
t.SuperCanvasPreviousLocation = t.SuperCanvasLocation;
_activeTouches[t.Handle] = t;
if (Content != null) {
Content.TouchesBegan (new[] { t }, CanvasKeys.None);
}
}
void HandleTouchFrameReported(object sender, TouchFrameEventArgs e)
{
try {
var pts = e.GetTouchPoints(this);
var spts = e.GetTouchPoints((UIElement)Parent);
var began = new List<CanvasTouch>();
var ended = new List<CanvasTouch>();
var moved = new List<CanvasTouch>();
for (var i = 0; i < pts.Count; i++) {
var p = pts[i];
var handle = new IntPtr(p.TouchDevice.Id + 1);
var now = DateTime.UtcNow;
if (p.Action == TouchAction.Down) {
var pos = p.Position.ToPointF();
//
// Look for double taps
//
var tapCount = 1;
if (_lastDownTime.ContainsKey(handle) &&
_lastBeganPosition.ContainsKey(handle)) {
var dt = now - _lastDownTime[handle];
if (dt.TotalSeconds < 0.5 && pos.DistanceTo(_lastBeganPosition[handle]) < DoubleClickMinDistance) {
tapCount++;
}
}
//
// TouchBegan
//
var t = new CanvasTouch {
Handle = handle,
TapCount = tapCount,
CanvasLocation = pos,
CanvasPreviousLocation = pos,
SuperCanvasLocation = spts[i].Position.ToPointF(),
SuperCanvasPreviousLocation = spts[i].Position.ToPointF(),
PreviousTime = now,
Time = now,
};
_activeTouches[t.Handle] = t;
_lastDownTime[t.Handle] = now;
_lastBeganPosition[t.Handle] = pos;
began.Add(t);
}
else if (_activeTouches.ContainsKey(handle)) {
var t = _activeTouches[handle];
t.CanvasPreviousLocation = t.CanvasLocation;
t.SuperCanvasPreviousLocation = t.SuperCanvasLocation;
t.PreviousTime = t.Time;
t.CanvasLocation = p.Position.ToPointF();
t.SuperCanvasLocation = spts[i].Position.ToPointF();
t.Time = now;
if (p.Action == TouchAction.Move) {
moved.Add(t);
}
else {
ended.Add(t);
}
}
}
var del = Content;
if (del != null && _touchEnabled) {
if (began.Count > 0) {
var keys = CanvasKeys.None;
//if (Keyboard.IsKeyDown (Key.LeftCtrl) || Keyboard.IsKeyDown (Key.RightCtrl)) {
// keys = keys | CanvasKeys.Command;
//}
//if (Keyboard.IsKeyDown (Key.LeftShift) || Keyboard.IsKeyDown (Key.RightShift)) {
// keys = keys | CanvasKeys.Shift;
//}
del.TouchesBegan(began.ToArray(), keys);
}
if (moved.Count > 0) {
del.TouchesMoved(moved.ToArray());
}
if (ended.Count > 0) {
del.TouchesEnded(ended.ToArray());
}
}
}
catch (Exception err) {
System.Diagnostics.Debug.WriteLine(err);
}
}
public void TouchesBegan(CanvasTouch[] touches)
{
var touch = touches.First ();
if (Frame.Contains (touch.CanvasLocation)) {
istate = InteractionState.Pressed;
}
}
public virtual bool TouchesMoved(CanvasTouch[] touches)
{
return false;
}
public virtual void TouchesEnded(CanvasTouch[] touches)
{
}
public virtual void TouchesCancelled(CanvasTouch[] touches)
{
}
public virtual void TouchesBegan(CanvasTouch[] touches)
{
}
public void TouchesEnded(CanvasTouch[] touches)
{
if (istate == InteractionState.Pressed) {
istate = InteractionState.None;
var c = Click;
if (c != null) {
c (this, EventArgs.Empty);
}
}
}
public virtual void TouchesBegan(CanvasTouch[] touches, CanvasKeys keys)
{
}
void HandleTouchFrameReported(object sender, TouchFrameEventArgs e)
{
try {
var pts = e.GetTouchPoints(this);
var spts = e.GetTouchPoints((UIElement)Parent);
var began = new List <CanvasTouch>();
var ended = new List <CanvasTouch>();
var moved = new List <CanvasTouch>();
for (var i = 0; i < pts.Count; i++)
{
var p = pts[i];
var handle = new IntPtr(p.TouchDevice.Id + 1);
var now = DateTime.UtcNow;
if (p.Action == TouchAction.Down)
{
var pos = p.Position.ToPointF();
//
// Look for double taps
//
var tapCount = 1;
if (_lastDownTime.ContainsKey(handle) &&
_lastBeganPosition.ContainsKey(handle))
{
var dt = now - _lastDownTime[handle];
if (dt.TotalSeconds < 0.5 && pos.DistanceTo(_lastBeganPosition[handle]) < DoubleClickMinDistance)
{
tapCount++;
}
}
//
// TouchBegan
//
var t = new CanvasTouch {
Handle = handle,
TapCount = tapCount,
CanvasLocation = pos,
CanvasPreviousLocation = pos,
SuperCanvasLocation = spts[i].Position.ToPointF(),
SuperCanvasPreviousLocation = spts[i].Position.ToPointF(),
PreviousTime = now,
Time = now,
};
_activeTouches[t.Handle] = t;
_lastDownTime[t.Handle] = now;
_lastBeganPosition[t.Handle] = pos;
began.Add(t);
}
else if (_activeTouches.ContainsKey(handle))
{
var t = _activeTouches[handle];
t.CanvasPreviousLocation = t.CanvasLocation;
t.SuperCanvasPreviousLocation = t.SuperCanvasLocation;
t.PreviousTime = t.Time;
t.CanvasLocation = p.Position.ToPointF();
t.SuperCanvasLocation = spts[i].Position.ToPointF();
t.Time = now;
if (p.Action == TouchAction.Move)
{
moved.Add(t);
}
else
{
ended.Add(t);
}
}
}
var del = Content;
if (del != null && _touchEnabled)
{
if (began.Count > 0)
{
var keys = CanvasKeys.None;
//if (Keyboard.IsKeyDown (Key.LeftCtrl) || Keyboard.IsKeyDown (Key.RightCtrl)) {
// keys = keys | CanvasKeys.Command;
//}
//if (Keyboard.IsKeyDown (Key.LeftShift) || Keyboard.IsKeyDown (Key.RightShift)) {
// keys = keys | CanvasKeys.Shift;
//}
del.TouchesBegan(began.ToArray(), keys);
}
if (moved.Count > 0)
{
del.TouchesMoved(moved.ToArray());
}
if (ended.Count > 0)
{
del.TouchesEnded(ended.ToArray());
}
}
}
catch (Exception err) {
System.Diagnostics.Debug.WriteLine(err);
}
}
