// --------------------------------------------------------------------------------------
// WSHtpc01
// Description: a fullscreen now-playing script for foo_uie_wsh_panel
// Author: ojdo
// Version: 0.3
// ---------------------------------------------------------------------------------------

// HELPER FUNCTIONS

var showArtistArt = true;
var showArtistArtalways = false;
var AlbumArtMaxSize = 300;

function StringFormat() {
	var h_align = 0, v_align = 0, trimming = 0, flags = 0;
	switch (arguments.length)
	{
		// fall-through
		case 4: flags = arguments[3];
		case 3: trimming = arguments[2];
		case 2: v_align = arguments[1];
		case 1: h_align = arguments[0]; break;
		default: return 0;
	}
	return ((h_align << 28) | (v_align << 24) | (trimming << 20) | flags);
}
function RGB(r, g, b) { return (0xff000000 | (r << 16) | (g << 8) | (b)); }
function RGBA(r, g, b, a) { return ((a << 24) | (r << 16) | (g << 8) | (b)); }

// INITIALIZATION

var g_albumart = null, g_albumart_rot = null;
var g_disc = null, g_disc_rot = null;
var g_artist = null, g_artist_rot = null;
var album_w=0, album_h=0, album_x=0, album_y=0;
var artist_w, artist_h, artist_x, artist_y;

var g_font_title = gdi.Font("Calibri", 36, 0);
var g_font_album = gdi.Font("Calibri", 28, 0);
var g_font_artist = gdi.Font("Calibri", 22, 0);
var g_font_time = gdi.Font("Calibri", 14, 0);
var g_font_misc = gdi.Font("Calibri", 16, 0);
var g_color_title = RGB(255,255,255);
var g_color_misc = RGB(99,99,99);
var g_color_time = RGB(77,77,77);
var g_stringformat = StringFormat(0, 0,4); 
var title, artist, album, rating, mood, tracknumber, discnumber, totaltracks, totaldiscs, infoline, pbtime;

var ww = 0, wh = 0; // Window width, height
var g_handle = null; // metadb handle variable for watching the currently played track
AlbumArtId = { front: 0, back: 1, disc: 2, icon: 3, artist: 4 };
var PlaybackOrderText = new Array("Default", "Repeat (Playlist)", "Repeat (Track)", "Random", "Shuffle (tracks)", "Shuffle (albums)", "Shuffle (folders)");

// evoke callback function to initially paint the window
on_playback_new_track(fb.GetNowPlaying());

// -----------------------------------------------------------------------
// DRAW CANVAS CONTENT
function on_paint(gr) {
	gr.SetTextRenderingHint(5); // enable cleartype font rendering
	
	// Background
	gr.FillSolidRect(0, 0, ww, wh, RGB(0,0,0));
	gr.FillGradRect(0, 0.7*wh, ww, 0.2*wh, 90,RGB(26,26,26), RGBA(77,77,77,0));

	// Albumart: Calculations and reflection
	if(g_albumart) {
		var album_scale_w = Math.min(AlbumArtMaxSize,0.44*ww) / g_albumart.Width;
		var album_scale_h = Math.min(AlbumArtMaxSize,0.93*(0.75*wh)) / g_albumart.Height;
		var album_scale = Math.min(album_scale_w, album_scale_h);
		album_w = g_albumart.Width * album_scale;
		album_h = g_albumart.Height * album_scale;
		album_x = 0.47*ww-album_w;
		album_y = 0.75*wh-album_h;

		gr.DrawImage(g_albumart_rot, album_x, album_y+album_h, album_w, album_h, 0, 0, g_albumart.Width, g_albumart.Height);		
		gr.FillGradRect(album_x,album_y+album_h,album_w,wh/6, 90, RGBA(0,0,0,128), RGB(0,0,0));
		gr.FillSolidRect(album_x,album_y+album_h+wh/6,album_w,5*wh/6, RGB(0,0,0));
	}

	// Rating and Mood
	rating && gr.FillGradRect(0.49*ww, 0.7*wh-15, rating/5*ww/2.2, 2, 0, RGB(32,16,0), RGB(96,48,0));
	mood && gr.FillGradRect(0.49*ww, 0.7*wh-8,   mood/3*ww/2.2,  2, 0, RGB(0, 32,0), RGB(0,96,0));	

	// Artist & Title
	title && gr.DrawString(title, g_font_title, g_color_title, 0.49*ww, 0.7*wh-125, 0.5*ww, 50, g_stringformat);
	album && gr.DrawString(album, g_font_album, g_color_title, 0.49*ww, 0.7*wh-125+43, 0.5*ww, 35, g_stringformat);
	artist && gr.DrawString(artist, g_font_artist, g_color_title, 0.49*ww, 0.7*wh-125+80, 0.5*ww, 30, g_stringformat);
	
	// Infoline
	infoline && gr.DrawString(infoline, g_font_misc, g_color_misc, 0.49*ww, 0.7*wh+5, ww/2.2, 60, g_stringformat);
	
	// Progress bar
	if (fb.PlaybackLength>0) { 
		gr.FillGradRect(0,0.7*wh-1, fb.PlaybackTime/fb.PlaybackLength*ww, 2, 0, RGB(64,64,64),RGB(0,48,96)); 
		gr.DrawString(fb.TitleFormat("%playback_time_remaining%").Eval(), g_font_time, g_color_time, (1-0.07-0.005)*ww, 0.7*wh+5, 0.07*ww, 20, StringFormat(2,0));
		gr.DrawString(fb.TitleFormat("%playback_time%").Eval(), g_font_time, g_color_time, 0.005*ww, 0.7*wh+5, 0.07*ww, 20, StringFormat(0,0));
	}
	
	// Albumart
	if (g_albumart) { gr.DrawImage(g_albumart, album_x, album_y, album_w, album_h, 0, 0, g_albumart.Width, g_albumart.Height); }
	
	// Artistart
	if (g_artist) {
		var artist_scale_w = Math.min(0.6*AlbumArtMaxSize,0.16*ww) / g_artist.Width;
		var artist_scale_h = Math.min(0.6*AlbumArtMaxSize,0.5*(0.75*wh)) / g_artist.Height;
		var artist_scale = Math.min(artist_scale_w, artist_scale_h);
		artist_w = g_artist.Width * artist_scale;
		artist_h = g_artist.Height * artist_scale;
		artist_x = album_x+album_w/2-artist_w/2;
		artist_y = 0.78*wh-artist_h;
		if(fb.PlaybackLength>0) {
			var pbratio = fb.PlaybackTime/fb.PlaybackLength;
			if(showArtistArtalways || pbratio < 0.1 || pbratio > 0.9) {
                gr.DrawImage(g_artist_rot, artist_x, artist_y+artist_h, artist_w, artist_h, 0, 0, g_artist.Width, g_artist.Height);
				gr.DrawImage(g_artist, artist_x, artist_y, artist_w, artist_h, 0, 0, g_artist.Width, g_artist.Height);
				gr.FillGradRect(artist_x,artist_y+artist_h,artist_w,wh/6, 90, RGBA(0,0,0,128), RGB(0,0,0));
				gr.FillSolidRect(artist_x,artist_y+artist_h+wh/6,artist_w,5*wh/6, RGB(0,0,0));
			}
		}
	}
}

// -----------------------------------------------------------------------
// CALLBACKS
// -----------------------------------------------------------------------

// window size changed
function on_size() {
	ww = window.Width;
	wh = window.Height;
}

// new track
function on_playback_new_track(metadb) {
	if (metadb) { 
		utils.GetAlbumArtAsync(window.ID, metadb, AlbumArtId.front); 
		//utils.GetAlbumArtAsync(window.ID, metadb, AlbumArtId.disc); 
		showArtistArt && utils.GetAlbumArtAsync(window.ID, metadb, AlbumArtId.artist); 
	}
	g_albumart = null; g_albumart_rot = null;
	g_disc = null; g_disc_rot = null;
	g_artist = null; g_artist_rot = null;

	if (g_handle) {window.UnwatchMetadb();}
	g_handle = fb.GetNowPlaying();
	if (g_handle) {
		on_metadb_changed(); // calls on_metadb_changed()
		window.WatchMetadb(g_handle);
	}
}

// tag content changed
function on_metadb_changed() {
	rating = fb.TitleFormat("%rating%").Eval(); if(rating == "?") rating=-1;
	mood = fb.TitleFormat("%mood%").Eval(); if(mood == "?") mood=-1;
	
	var old_infoline = infoline;
	
	title = fb.TitleFormat("%title%").Eval();
	artist = fb.TitleFormat("%artist%").Eval();
	album = fb.TitleFormat("$if2(%album%,<unknown album>)").Eval();
	date = fb.TitleFormat("$if2(%date%,n/a)").Eval();
	tracknumber = fb.TitleFormat("$if(%tracknumber%,$num(%tracknumber%,1))").Eval();
	totaltracks = fb.TitleFormat("$if(%totaltracks%,$num(%totaltracks%,1))").Eval();
	discnumber = fb.TitleFormat("[%discnumber%]").Eval();
	totaldiscs = fb.TitleFormat("[%totaldiscs%]").Eval();
	infoline = fb.TitleFormat(
		"[%genre%]"+
		"['     '%style%]"+
		"['     '%publisher%]"+
		"$if(%tracknumber%,'     '# $num(%tracknumber%,1)$if(%totaltracks%,/$replace($num(%totaltracks%,1),0,₀,1,₁,2,₂,3,₃,4,₄,5,₅,6,₆,7,₇,8,₈,9,₉)))"+
		"$ifgreater(%totaldiscs%,1,'    'CD %discnumber%/$replace($num(%totaldiscs%,1),0,₀,1,₁,2,₂,3,₃,4,₄,5,₅,6,₆,7,₇,8,₈,9,₉),)"+
		"$if(%date%,'     'Y$replace(%date%,0,₀,1,₁,2,₂,3,₃,4,₄,5,₅,6,₆,7,₇,8,₈,9,₉))"+
		"$if(%play_count%,'     'PC$replace(%play_count%,0,₀,1,₁,2,₂,3,₃,4,₄,5,₅,6,₆,7,₇,8,₈,9,₉))"+
		"$if(%first_played%,' : 'FP$replace($date(%first_played%),0,₀,1,₁,2,₂,3,₃,4,₄,5,₅,6,₆,7,₇,8,₈,9,₉,-,.))"+
		"$if(%last_played%,' → 'LP$replace($date(%last_played%),0,₀,1,₁,2,₂,3,₃,4,₄,5,₅,6,₆,7,₇,8,₈,9,₉,-,.))"+
		"$if(%length%,'     'LEN$replace(%length%,0,₀,1,₁,2,₂,3,₃,4,₄,5,₅,6,₆,7,₇,8,₈,9,₉,:,.))"
	).Eval()
        + "    Order: "+PlaybackOrderText[fb.PlaybackOrder];
	window.RepaintRect(0.49*ww,0.7*wh-15,ww/2,10); // calls on_paint()
	
	if(old_infoline != infoline) {
		window.RepaintRect(0.49*ww, 0.7*wh+5, ww/2.2, 65+1);
	}
}

// time (each second) and on seeking
function on_playback_time(time) { 
	window.RepaintRect(0,0.7*wh+5,0.1*ww,20);
    window.RepaintRect(0.9*ww,0.7*wh+5,0.1*ww,20);
	window.RepaintRect(0,0.7*wh-1,ww,3); 
	
	if(g_artist) { window.RepaintRect(artist_x,artist_y,artist_w+1,2*artist_h+1); }
}
function on_playback_seek(time) {
	on_playback_time(time);
}

// playback order changed
function on_playback_order_changed(new_order_index) { 
	on_metadb_changed();
}

// playback stopped
function on_playback_stop(reason) {
	if(reason != 2) { // starting_another
		g_albumart = null; g_albumart_rot = null;
		g_disc = null; g_disc_rot = null;
		g_artist = null; g_artist_rot = null;
		
		title = ""; artist = ""; album = "";	rating=0; mood=0; infoline = "";
		window.Repaint();
	}
}

// album art retrieved
function on_get_album_art_done(metadb, art_id, image) {
	if(image) {
		switch(art_id) {
			case AlbumArtId .front:
				g_albumart = image;
				g_albumart_rot = g_albumart.Clone(0, 0, g_albumart.Width, g_albumart.Height);
				g_albumart_rot.RotateFlip(6);
				break;
			case AlbumArtId.disc:
				g_disc = image;
				g_disc_rot = g_disc.Clone(0, 0, g_disc.Width, g_disc.Height);
				g_disc_rot.RotateFlip(6);
				break;
			case AlbumArtId.artist:
				g_artist = image;
				g_artist_rot = g_artist.Clone(0, 0, g_artist.Width, g_artist.Height);
				g_artist_rot.RotateFlip(6);
				break;
		}
		window.Repaint(); // calls on_paint()
	}
}

function on_mouse_lbtn_dblclk(x, y, mask) {
	on_playback_new_track(fb.GetNowPlaying());
}
// EOF