Album art display

// ==PREPROCESSOR==
// @name "Album art display"
// ==/PREPROCESSOR==

window.MinWidth = window.MinHeight = window.MaxWidth = window.MaxHeight = 333;

var Artwork =
{
    Image: null,
    Path: ""
}

var Info =
{
    Tooltip: window.CreateTooltip(),
    Active: false
}

function on_paint(graphics)
{
    graphics.SetSmoothingMode(4); // Use anti-aliasing
    graphics.FillSolidRect(0, 0, window.Width, window.Height, 0xFFFFFFFF); // Fill the background

    if (Artwork.Image)
    {
        graphics.SetInterpolationMode(7); // Use high-quality bicubic interpolation
        graphics.DrawImage(Artwork.Image, 0, 0, window.Width, window.Height, 0, 0, Artwork.Image.Width, Artwork.Image.Height);

        if (Info.Active)
        {
            Info.Tooltip.Deactivate();
            Info.Tooltip.Text = "Original size: " + Artwork.Image.Width + "×" + Artwork.Image.Height + " pixels.";
            Info.Tooltip.Activate();
        }
        else
        {
            Info.Tooltip.Text = "Original size: " + Artwork.Image.Width + "×" + Artwork.Image.Height + " pixels.";
        }
    }
    else
    {
        graphics.SetTextRenderingHint(4); // Use anti-aliased text
        graphics.GdiDrawText("No image was found to be displayed.", gdi.Font(window.GetFontDUI(0).Name, 19), 0x00000000, 0, 0, window.Width, window.Height, 3077);
    }
    /*
        DT_CENTER   = 0x00000001
        DT_VCENTER  = 0x00000004
        DT_CALCRECT = 0x00000400
        DT_NOPREFIX = 0x00000800

        DT_CENTER | DT_VCENTER | DT_CALCRECT | DT_NOPREFIX = 3077
    */
}

function on_get_album_art_done(whichTrack, coverType, coverImage, coverPath)
{
    if (coverPath != Artwork.Path)
    {
        Artwork.Image && Artwork.Image.Dispose();

        Artwork.Image = coverImage;
        Artwork.Path  = coverPath;

        window.Repaint();
    }
}

function on_playback_new_track(whichTrack)
{
    if (whichTrack)
    {
        utils.GetAlbumArtAsync(window.ID, whichTrack, 0, false, false, false);
        whichTrack.Dispose();
    }
    /*
        Do not load a stub image if no cover art is found.
        Check for external as well as for embedded images.
        Load the image into the memory and use it within the callback.
    */
}

function on_mouse_move(x, y)
{
    if (!Info.Active && Artwork.Image)
    {
        Info.Tooltip.Activate();
        Info.Active = true;
    }
}

function on_mouse_leave()
{
    if (Info.Active)
    {
        Info.Tooltip.Deactivate();
        Info.Active = false;
    }
}

on_playback_new_track(fb.GetNowPlaying());