void HandleListScrollEvent (object o, ScrollEventArgs args)
{
if (!vScrollbar.Visible)
return;
var adj = vScrollbar.Adjustment;
var alloc = Allocation;
//This widget is a special case because it's always aligned to items as it scrolls.
//Although this means we can't use the pixel deltas for true smooth scrolling, we
//can still make use of the effective scrolling velocity by basing the calculation
//on pixels and rounding to the nearest item.
double dx, dy;
args.Event.GetPageScrollPixelDeltas (0, alloc.Height, out dx, out dy);
if (dy == 0)
return;
var itemDelta = dy / (alloc.Height / adj.PageSize);
double discreteItemDelta = System.Math.Round (itemDelta);
if (discreteItemDelta == 0.0 && dy != 0.0)
discreteItemDelta = dy > 0? 1.0 : -1.0;
adj.AddValueClamped (discreteItemDelta);
args.RetVal = true;
}
private void HandleScrollEvent(object sender, ScrollEventArgs args)
{
// Activated only by Control + ScrollWheelUp/ScrollWheelDown
if (ModifierType.ControlMask != (args.Event.State & ModifierType.ControlMask))
return;
if (args.Event.Direction == ScrollDirection.Up) {
ZoomIn ();
// stop event from propagating.
args.RetVal = true;
} else if (args.Event.Direction == ScrollDirection.Down ) {
ZoomOut ();
args.RetVal = true;
}
}
protected virtual void OnVideoboxScrollEvent(object o, Gtk.ScrollEventArgs args)
{
switch (args.Event.Direction)
{
case ScrollDirection.Down:
SeekToPreviousFrame(InSegment());
break;
case ScrollDirection.Up:
SeekToNextFrame(InSegment());
break;
case ScrollDirection.Left:
StepBackward();
break;
case ScrollDirection.Right:
StepForward();
break;
}
}
void OnVideoboxScrollEvent(object o, Gtk.ScrollEventArgs args)
{
switch (args.Event.Direction)
{
case ScrollDirection.Down:
Player.SeekToPreviousFrame();
break;
case ScrollDirection.Up:
Player.SeekToNextFrame();
break;
case ScrollDirection.Left:
Player.StepBackward();
break;
case ScrollDirection.Right:
Player.StepForward();
break;
}
}
private void OnPlusMinusScollEvent(object o, ScrollEventArgs args)
{
if(args.Event.Direction == Gdk.ScrollDirection.Up) {
AdjustVolume(1);
} else if(args.Event.Direction == Gdk.ScrollDirection.Down) {
AdjustVolume(-1);
}
}
static void HandleTreeScrollEvent (object o, ScrollEventArgs args)
{
HideTooltip ((Gtk.TreeView)o);
}
private void OnMouseScroll (object o, ScrollEventArgs args)
{
switch (args.Event.Direction) {
case Gdk.ScrollDirection.Up:
if ((args.Event.State & Gdk.ModifierType.ControlMask) != 0) {
ServiceManager.PlayerEngine.Volume += (ushort)PlayerEngine.VolumeDelta;
} else if((args.Event.State & Gdk.ModifierType.ShiftMask) != 0) {
ServiceManager.PlayerEngine.Position += PlayerEngine.SkipDelta;
} else {
ServiceManager.PlaybackController.Next ();
}
break;
case Gdk.ScrollDirection.Down:
if ((args.Event.State & Gdk.ModifierType.ControlMask) != 0) {
if (ServiceManager.PlayerEngine.Volume < (ushort)PlayerEngine.VolumeDelta) {
ServiceManager.PlayerEngine.Volume = 0;
} else {
ServiceManager.PlayerEngine.Volume -= (ushort)PlayerEngine.VolumeDelta;
}
} else if((args.Event.State & Gdk.ModifierType.ShiftMask) != 0) {
ServiceManager.PlayerEngine.Position -= PlayerEngine.SkipDelta;
} else {
ServiceManager.PlaybackController.Previous ();
}
break;
}
}
protected void OnDrawingAreaScroll(object o, ScrollEventArgs args)
{
if (args.Event.Direction == ScrollDirection.Up) {
zoomSpeed+=ZoomSpeedIncrement;
}
if (args.Event.Direction == ScrollDirection.Down) {
zoomSpeed-=ZoomSpeedIncrement;
}
args.RetVal = true;
}
void PlotWidget_ScrollEvent(object o, ScrollEventArgs args)
{
int X, Y;
int direction = -1;
Gdk.ModifierType state;
args.Event.Window.GetPointer(out X, out Y, out state);
Modifier keys = MouseInput(state);
if (args.Event.Direction == Gdk.ScrollDirection.Up)
{
direction = +1;
}
this.InteractivePlotSurface2D.DoMouseScroll(X, Y, direction, keys);
}
private void ScrollNotify(object o, ScrollEventArgs args)
{
int X, Y;
int direction = -1;
Gdk.ModifierType state;
args.Event.Window.GetPointer(out X, out Y, out state);
Modifier keys = MouseInput(state);
if (args.Event.Direction == Gdk.ScrollDirection.Up) {
direction = +1;
}
DoMouseScroll (X, Y, direction, keys);
}
void OnScrolled(object o, ScrollEventArgs args)
{
if (args.Event.Direction == Gdk.ScrollDirection.Up)
scrollbar.Value --;
else if (args.Event.Direction == Gdk.ScrollDirection.Down)
scrollbar.Value ++;
}
private void Scroll(object sender, ScrollEventArgs e)
{
try
{
if (Core.HoldingCtrl)
{
if (e.Event.Direction == Gdk.ScrollDirection.Up)
{
scrollback.ResizeText(400);
}
else
{
scrollback.ResizeText(-400);
}
e.RetVal = true;
}
}
catch (Exception fail)
{
Core.handleException(fail);
}
}
void Viewport_ScrollEvent(object o, ScrollEventArgs args)
{
// need to update when scrolled and pointer still at same position, otherwise would display outdated info
// HACK
ClearTooltip ();
// TODO update tooltip after scroll event
// ok but not accurate, probably called before scroll is done
//UpdateToolTip ();
}
void control_ScrollEvent(object sender, ScrollEventArgs a)
{
Update();
}
void ScrollHandler (object o, ScrollEventArgs args)
{
Gdk.EventScroll es = args.Event;
double newloc = 0.0;
int steps = Math.Max (rows / 6, 2);
switch (es.Direction){
case ScrollDirection.Up:
newloc = adjustment.Value - steps;
break;
case ScrollDirection.Down:
newloc = adjustment.Value + steps;
break;
}
newloc = Math.Max (newloc, 0);
newloc = Math.Min (newloc, provider.Rows - rows);
adjustment.Value = newloc;
}
void HandleKeyTreeScrollEvent (object o, ScrollEventArgs args)
{
HandleKeyTreeMotion (args.Event.X, args.Event.Y);
}
private void OnScrollEvent(object sender, ScrollEventArgs a)
{
Gdk.EventScroll ev = a.Event;
if (ev.Direction == ScrollDirection.Up)
ZoomIn ();
else
ZoomOut ();
Redraw ();
}
private void OnNotificationAreaIconScroll(object o, ScrollEventArgs args)
{
switch (args.Event.Direction) {
case Gdk.ScrollDirection.Up:
Driver.PlayerWindow.Volume += 10;
break;
case Gdk.ScrollDirection.Down:
Driver.PlayerWindow.Volume -= 10;
break;
}
}
