/// <summary>
/// Initializes this <see cref="ColorPicker"/> object's events.
/// </summary>
protected sealed override void InitializeEvents()
{
if (IsInvalid)
{
throw new InvalidHandleException();
}
LibuiEx.ColorButtonOnChanged(Handle, (button, data) => OnColorChanged(this), IntPtr.Zero);
}
/// <summary>
/// Scrolls the surface view to the specified location and size.
/// </summary>
/// <param name="x">The x-coordinate of the view.</param>
/// <param name="y">The y-coordinate of the view.</param>
/// <param name="width">The width of the view.</param>
/// <param name="height">The height of the view.</param>
public void ScrollTo(double x, double y, double width, double height)
{
if (IsInvalid)
{
throw new InvalidHandleException();
}
LibuiEx.AreaScrollTo(Handle, x, y, width, height);
}
public void BeginUserWindowResize(WindowEdge edge)
{
if (IsInvalid)
{
throw new InvalidHandleException();
}
LibuiEx.AreaBeginUserWindowResize(Handle, edge);
}
public void BeginUserWindowMove()
{
if (IsInvalid)
{
throw new InvalidHandleException();
}
LibuiEx.AreaBeginUserWindowMove(Handle);
}
/// <summary>
/// Queues a redraw of the surface.
/// </summary>
public void QueueRedrawAll()
{
Thread.Sleep(200); // Must sleep for 200ms or else crashes
if (IsInvalid)
{
throw new InvalidHandleException();
}
LibuiEx.AreaQueueRedrawAll(Handle);
}
protected sealed override void ReleaseUnmanagedResources()
{
if (font != null)
{
LibuiEx.FreeFontButtonFont(font);
font = null;
}
base.ReleaseUnmanagedResources();
}
private static SafeControlHandle GetHandle(SurfaceHandler handler, bool scrollable, int width, int height, out LibuiEx.AreaHandler outHandler)
{
outHandler = new LibuiEx.AreaHandler
{
Draw = (nativeHandler, surface, args) => handler.Draw(surfaceCache[surface], ref args),
MouseEvent = (nativeHandler, surface, args) => handler.MouseEvent(surfaceCache[surface], ref args),
MouseCrossed = (nativeHandler, surface, left) => handler.MouseCrossed(surfaceCache[surface], left),
DragBroken = (nativeHandler, surface) => handler.DragBroken(surfaceCache[surface]),
KeyEvent = (nativeHandler, surface, args) => handler.KeyEvent(surfaceCache[surface], ref args)
};
return(!scrollable
? new SafeControlHandle(LibuiEx.NewArea(outHandler))
: new SafeControlHandle(LibuiEx.NewScrollingArea(outHandler, width, height)));
}
/// <summary>
/// Executes the code required to free the handle.
/// </summary>
/// <returns><see langword="true"/> if the handle is released successfully; otherwise, in the event of a catastrophic failure, <see langword="false"/>.</returns>
protected override bool ReleaseHandle()
{
bool released;
try
{
LibuiEx.FreeAttribute(handle);
handle = IntPtr.Zero;
released = true;
}
catch
{
released = false;
}
return(released);
}
/// <summary> /// Initializes a new instance of the <see cref="ColorPicker"/> class. /// </summary> public ColorPicker() : base(new SafeControlHandle(LibuiEx.NewColorButton())) => InitializeEvents();
/// <summary> /// Initializes a new instance of the <see cref="Path"/> class with the specified <see cref="FillMode"/>. /// </summary> /// <param name="mode">The <see cref="FillMode"/> specifying how the initialized <see cref="Path"/> should be filled.</param> public Path(FillMode mode) : base(new SafePathHandle(LibuiEx.DrawNewPath(mode))) => FillMode = mode;
/// <summary> /// Initializes a new instance of the <see cref="FontPicker"/> class. /// </summary> public FontPicker() : base(new SafeControlHandle(LibuiEx.NewFontButton())) => InitializeEvents();
