File size: 5,271 Bytes
18a519f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | using System;
using UnityEngine;
namespace UnityEditor.Timeline
{
abstract class RectangleTool
{
readonly struct TimelinePoint
{
readonly double m_Time;
readonly float m_YPos;
readonly float m_YScrollPos;
readonly WindowState m_State;
readonly TimelineTreeViewGUI m_TreeViewGUI;
public TimelinePoint(WindowState state, Vector2 mousePosition)
{
m_State = state;
m_TreeViewGUI = state.GetWindow().treeView;
m_Time = m_State.PixelToTime(mousePosition.x);
m_YPos = mousePosition.y;
m_YScrollPos = m_TreeViewGUI.scrollPosition.y;
}
public Vector2 ToPixel()
{
return new Vector2(m_State.TimeToPixel(m_Time), m_YPos - (m_TreeViewGUI.scrollPosition.y - m_YScrollPos));
}
}
const float k_HeaderSplitterOverlap = WindowConstants.headerSplitterWidth / 2;
TimeAreaAutoPanner m_TimeAreaAutoPanner;
TimelinePoint m_StartPoint;
Vector2 m_EndPixel = Vector2.zero;
Rect m_ActiveRect;
protected abstract bool enableAutoPan { get; }
protected abstract bool CanStartRectangle(Event evt);
protected abstract bool OnFinish(Event evt, WindowState state, Rect rect);
int m_Id;
public void OnGUI(WindowState state, EventType rawType, Vector2 mousePosition)
{
if (m_Id == 0)
m_Id = GUIUtility.GetPermanentControlID();
if (state == null || state.GetWindow().treeView == null)
return;
var evt = Event.current;
if (rawType == EventType.MouseDown || evt.type == EventType.MouseDown)
{
if (state.IsCurrentEditingASequencerTextField())
return;
m_ActiveRect = TimelineWindow.instance.sequenceContentRect;
//remove the track header splitter overlap
m_ActiveRect.x += k_HeaderSplitterOverlap;
m_ActiveRect.width -= k_HeaderSplitterOverlap;
if (!m_ActiveRect.Contains(mousePosition))
return;
if (!CanStartRectangle(evt))
return;
if (enableAutoPan)
m_TimeAreaAutoPanner = new TimeAreaAutoPanner(state);
m_StartPoint = new TimelinePoint(state, mousePosition);
m_EndPixel = mousePosition;
GUIUtility.hotControl = m_Id; //HACK: Because the treeView eats all the events, steal the hotControl if necessary...
evt.Use();
return;
}
switch (evt.GetTypeForControl(m_Id))
{
case EventType.KeyDown:
{
if (GUIUtility.hotControl == m_Id)
{
if (evt.keyCode == KeyCode.Escape)
{
m_TimeAreaAutoPanner = null;
GUIUtility.hotControl = 0;
evt.Use();
}
}
return;
}
case EventType.MouseDrag:
{
if (GUIUtility.hotControl != m_Id)
return;
m_EndPixel = mousePosition;
evt.Use();
return;
}
case EventType.MouseUp:
{
if (GUIUtility.hotControl != m_Id)
return;
m_TimeAreaAutoPanner = null;
var rect = CurrentRectangle();
if (IsValidRect(rect))
OnFinish(evt, state, rect);
GUIUtility.hotControl = 0;
evt.Use();
return;
}
}
if (GUIUtility.hotControl == m_Id)
{
if (evt.type == EventType.Repaint)
{
var r = CurrentRectangle();
if (IsValidRect(r))
{
using (new GUIViewportScope(m_ActiveRect))
{
DrawRectangle(r);
}
}
}
if (m_TimeAreaAutoPanner != null)
m_TimeAreaAutoPanner.OnGUI(evt);
}
}
static void DrawRectangle(Rect rect)
{
EditorStyles.selectionRect.Draw(rect, GUIContent.none, false, false, false, false);
}
static bool IsValidRect(Rect rect)
{
return rect.width >= 1.0f && rect.height >= 1.0f;
}
Rect CurrentRectangle()
{
var startPixel = m_StartPoint.ToPixel();
return Rect.MinMaxRect(
Math.Min(startPixel.x, m_EndPixel.x),
Math.Min(startPixel.y, m_EndPixel.y),
Math.Max(startPixel.x, m_EndPixel.x),
Math.Max(startPixel.y, m_EndPixel.y));
}
}
}
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