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Add timeline view panning with right mouse button
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@mafiesto4
mafiesto4 committed Aug 10, 2021
1 parent e4bd5c7 commit 94b4c20
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Showing 2 changed files with 132 additions and 34 deletions.
95 changes: 95 additions & 0 deletions Source/Editor/GUI/Timeline/GUI/BackgroundArea.cs
View file
@@ -0,0 +1,95 @@
// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.

using FlaxEngine;
using FlaxEngine.GUI;

namespace FlaxEditor.GUI.Timeline.GUI
{
/// <summary>
/// The timeline background area control.
/// </summary>
class BackgroundArea : Panel
{
private Timeline _timeline;
internal bool _rightMouseButtonDown;
private Vector2 _rightMouseButtonLastPos;
private float _rightMouseButtonMovement;

public BackgroundArea(Timeline timeline)
: base(ScrollBars.Both)
{
_timeline = timeline;
}

/// <inheritdoc />
public override bool OnMouseDown(Vector2 location, MouseButton button)
{
if (base.OnMouseDown(location, button))
return true;

if (button == MouseButton.Right)
{
_rightMouseButtonDown = true;
_rightMouseButtonLastPos = location;
_rightMouseButtonMovement = 0;
Focus();
StartMouseCapture();
return true;
}

return false;
}

/// <inheritdoc />
public override void OnMouseMove(Vector2 location)
{
// Panning timeline view with a right-mouse button
if (_rightMouseButtonDown)
{
var movePos = location + ViewOffset;
var delta = _rightMouseButtonLastPos - movePos;
_rightMouseButtonLastPos = movePos;
_rightMouseButtonMovement += delta.Length;

var hScroll = HScrollBar.Visible && HScrollBar.Enabled;
var vScroll = VScrollBar.Visible && VScrollBar.Enabled;
if (vScroll && hScroll)
Cursor = CursorType.SizeAll;
else if (vScroll)
Cursor = CursorType.SizeNS;
else if (hScroll)
Cursor = CursorType.SizeWE;

bool wasLocked = IsLayoutLocked;
IsLayoutLocked = true;
if (hScroll)
HScrollBar.TargetValue += delta.X;
if (vScroll)
VScrollBar.TargetValue += delta.Y;
IsLayoutLocked = wasLocked;
PerformLayout();
return;
}

base.OnMouseMove(location);
}

/// <inheritdoc />
public override bool OnMouseUp(Vector2 location, MouseButton button)
{
if (button == MouseButton.Right && _rightMouseButtonDown)
{
EndMouseCapture();
_rightMouseButtonDown = false;
Cursor = CursorType.Default;
if (_rightMouseButtonMovement < 1.0f)
{
_timeline.ShowContextMenu(PointToParent(_timeline, location));
}
return true;
}

return base.OnMouseUp(location, button);
}
}
}
71 changes: 37 additions & 34 deletions Source/Editor/GUI/Timeline/Timeline.cs
View file
Expand Up @@ -288,7 +288,7 @@ public enum PlaybackButtons
private TimeIntervalsHeader _timeIntervalsHeader;
private ContainerControl _backgroundScroll;
private Background _background;
private Panel _backgroundArea;
private BackgroundArea _backgroundArea;
private TimelineEdge _leftEdge;
private TimelineEdge _rightEdge;
private Button _addTrackButton;
Expand All @@ -305,6 +305,7 @@ public enum PlaybackButtons
private PositionHandle _positionHandle;
private bool _isRightMouseButtonDown;
private Vector2 _rightMouseButtonDownPos;
private Vector2 _rightMouseButtonMovePos;
private float _zoom = 1.0f;
private bool _isMovingPositionHandle;
private bool _canPlayPauseStop = true;
Expand Down Expand Up @@ -912,7 +913,7 @@ public Timeline(PlaybackButtons playbackButtons, FlaxEditor.Undo undo = null, bo
Offsets = new Margin(0, 0, 0, HeaderTopAreaHeight),
Parent = _splitter.Panel2
};
_backgroundArea = new Panel(ScrollBars.Both)
_backgroundArea = new BackgroundArea(this)
{
AutoFocus = false,
ClipChildren = false,
Expand Down Expand Up @@ -1954,6 +1955,38 @@ public void SetNoTracksText(string text)
}
}

internal void ShowContextMenu(Vector2 location)
{
if (!ContainsFocus)
Focus();

var controlUnderMouse = GetChildAtRecursive(location);
var mediaUnderMouse = controlUnderMouse;
while (mediaUnderMouse != null && !(mediaUnderMouse is Media))
{
mediaUnderMouse = mediaUnderMouse.Parent;
}

var menu = new ContextMenu.ContextMenu();
if (mediaUnderMouse is Media media)
{
media.OnTimelineShowContextMenu(menu, controlUnderMouse);
if (media.PropertiesEditObject != null)
{
menu.AddButton("Edit media", () => ShowEditPopup(media.PropertiesEditObject, ref location, media.Track));
}
}
if (PropertiesEditObject != null)
{
menu.AddButton("Edit timeline", () => ShowEditPopup(PropertiesEditObject, ref location, this));
}
menu.AddSeparator();
menu.AddButton("Reset zoom", () => Zoom = 1.0f);
menu.AddButton("Show whole timeline", ShowWholeTimeline);
OnShowContextMenu(menu);
menu.Show(this, location);
}

/// <inheritdoc />
protected override void PerformLayoutBeforeChildren()
{
Expand Down Expand Up @@ -1986,8 +2019,8 @@ public override bool OnMouseDown(Vector2 location, MouseButton button)
{
_isRightMouseButtonDown = true;
_rightMouseButtonDownPos = location;
_rightMouseButtonMovePos = location;
Focus();

return true;
}

Expand All @@ -2006,38 +2039,8 @@ public override bool OnMouseUp(Vector2 location, MouseButton button)
if (button == MouseButton.Right && _isRightMouseButtonDown)
{
_isRightMouseButtonDown = false;

if (Vector2.Distance(ref location, ref _rightMouseButtonDownPos) < 4.0f)
{
if (!ContainsFocus)
Focus();

var controlUnderMouse = GetChildAtRecursive(location);
var mediaUnderMouse = controlUnderMouse;
while (mediaUnderMouse != null && !(mediaUnderMouse is Media))
{
mediaUnderMouse = mediaUnderMouse.Parent;
}

var menu = new ContextMenu.ContextMenu();
if (mediaUnderMouse is Media media)
{
media.OnTimelineShowContextMenu(menu, controlUnderMouse);
if (media.PropertiesEditObject != null)
{
menu.AddButton("Edit media", () => ShowEditPopup(media.PropertiesEditObject, ref location, media.Track));
}
}
if (PropertiesEditObject != null)
{
menu.AddButton("Edit timeline", () => ShowEditPopup(PropertiesEditObject, ref location, this));
}
menu.AddSeparator();
menu.AddButton("Reset zoom", () => Zoom = 1.0f);
menu.AddButton("Show whole timeline", ShowWholeTimeline);
OnShowContextMenu(menu);
menu.Show(this, location);
}
ShowContextMenu(location);
}

return base.OnMouseUp(location, button);
Expand Down

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