/// <summary>Initializes the struct with default values.</summary>
public static ColorGradientKey Default()
{
ColorGradientKey value = new ColorGradientKey();
value.color = new Color();
value.time = 0f;
return(value);
}
/// <summary>
/// Handles input. Should be called by the owning window whenever a pointer is double-clicked.
/// </summary>
/// <param name="panelPos">Position of the pointer relative to the panel parent to this element.</param>
/// <param name="button">Pointer button involved in the event.</param>
internal void OnPointerDoubleClicked(Vector2I panelPos, PointerButton button)
{
Rect2I canvasBounds = canvas.Bounds;
if (!canvasBounds.Contains(panelPos))
{
return;
}
Vector2I canvasPos = panelPos - new Vector2I(canvasBounds.x, canvasBounds.y);
int keyIdx;
if (FindKey(canvasPos, out keyIdx))
{
ColorPicker.Show(keys[keyIdx].color, false,
(b, color) =>
{
if (b)
{
ColorGradientKey key = keys[keyIdx];
key.color = color;
keys[keyIdx] = key;
OnGradientModified?.Invoke(new ColorGradient(keys.ToArray()));
Rebuild();
}
});
}
else
{
float time = PixelToTime(canvasPos.x);
if (time >= 0.0f && time <= 1.0f)
{
keys.Add(new ColorGradientKey(Color.Black, time));
keys.Sort((lhs, rhs) => lhs.time.CompareTo(rhs.time));
OnGradientModified?.Invoke(new ColorGradient(keys.ToArray()));
}
Rebuild();
}
}
/// <summary>
/// Handles input. Should be called by the owning window whenever a pointer is moved.
/// </summary>
/// <param name="panelPos">Position of the pointer relative to the panel parent to this element.</param>
/// <param name="button">Pointer button involved in the event.</param>
internal void OnPointerMoved(Vector2I panelPos, PointerButton button)
{
if (button != PointerButton.Left)
{
return;
}
if (isMousePressedOverKey)
{
Rect2I canvasBounds = canvas.Bounds;
Vector2I canvasPos = panelPos - new Vector2I(canvasBounds.x, canvasBounds.y);
if (!isDragInProgress)
{
int distance = Vector2I.Distance(canvasPos, dragStart);
if (distance >= DRAG_START_DISTANCE)
{
isDragInProgress = true;
}
}
if (isDragInProgress)
{
float time = PixelToTime(canvasPos.x);
if (time >= 0.0f && time <= 1.0f)
{
ColorGradientKey key = keys[selectedIdx];
key.time = time;
keys[selectedIdx] = key;
OnGradientModified?.Invoke(new ColorGradient(keys.ToArray()));
}
Rebuild();
}
}
}
private static extern void Internal_getKey(IntPtr thisPtr, uint idx, out ColorGradientKey __output);
