private void DrawTiles(IGraphicsContext context, int tileSize, float realScrollBarHeight)
{
float deltaZoom = (float) (Zoom/Math.Floor(Zoom));
int startDirtyTile = (int)Math.Floor((ContentOffset.X + context.DirtyRect.X) / ((float)tileSize * deltaZoom));
int numberOfDirtyTilesToDraw = (int)Math.Ceiling(context.DirtyRect.Width / tileSize) + 1;
var request = new WaveFormBitmapRequest()
{
StartTile = startDirtyTile,
EndTile = startDirtyTile + numberOfDirtyTilesToDraw,
TileSize = tileSize,
BoundsWaveForm = Frame,
Zoom = _zoom,
DisplayType = _displayType
};
var tiles = _waveFormCacheService.GetTiles(request);
//Console.WriteLine("WaveFormControl - #### startTile: {0} startTileX: {1} contentOffset.X: {2} contentOffset.X/tileSize: {3} numberOfTilesToFillWidth: {4} firstTileX: {5}", startTile, startTile * tileSize, ContentOffset.X, ContentOffset.X / tileSize, numberOfTilesToFillWidth, (startTile * tileSize) - ContentOffset.X);
foreach (var tile in tiles)
{
float tileDeltaZoom = Zoom / tile.Zoom;
float x = tile.ContentOffset.X * tileDeltaZoom;
float tileWidth = tileSize * tileDeltaZoom;
float tileHeight = (ShowScrollBar && Zoom > 1) ? Frame.Height - realScrollBarHeight : Frame.Height;
//Console.WriteLine("WaveFormControl - Draw - tile - x: {0} tileWidth: {1} deltaZoom: {2}", x, tileWidth, deltaZoom);
//Console.WriteLine("WaveFormControl - Draw - tile - tile.ContentOffset.X: {0} x: {1} tileWidth: {2} tile.Zoom: {3}", tile.ContentOffset.X, x, tileWidth, tile.Zoom);
//context.DrawImage(new BasicRectangle(x - ContentOffset.X, 0, tileWidth, Frame.Height), tile.Image.ImageSize, tile.Image.Image);
context.DrawImage(new BasicRectangle(x - ContentOffset.X, 0, tileWidth, tileHeight), tile.Image.ImageSize, tile.Image.Image);
// Debug overlay
//context.DrawRectangle(new BasicRectangle(x - ContentOffset.X, 0, tileWidth, Frame.Height), new BasicBrush(new BasicColor(0, 0, 255, 50)), _penCursorLine);
//context.DrawText(string.Format("{0:0.0}", tile.Zoom), new BasicPoint(x - ContentOffset.X + 2, 4), _textColor, "Roboto", 11);
}
}
private void DrawScrollBar(IGraphicsContext context, int tileSize, float realScrollBarHeight)
{
if (ShowScrollBar && Zoom > 1)
{
int startTile = 0;
int numberOfTilesToFillWidth = (int)Math.Ceiling(Frame.Width / tileSize);// + 1; // maybe a bug here? when one of the tile is partially drawn, you need another one?
var requestScrollBar = new WaveFormBitmapRequest()
{
StartTile = startTile,
EndTile = numberOfTilesToFillWidth,
TileSize = tileSize,
BoundsWaveForm = new BasicRectangle(0, 0, Frame.Width, ScrollBarHeight), // Frame
Zoom = 1,
IsScrollBar = true,
DisplayType = _displayType
};
// TODO: Cache those tiles, we do not need to request them continually since these tiles are always at 100%
var tilesScrollBar = _waveFormCacheService.GetTiles(requestScrollBar);
foreach (var tile in tilesScrollBar)
{
context.DrawImage(new BasicRectangle(tile.ContentOffset.X, Frame.Height - realScrollBarHeight, tileSize, realScrollBarHeight), tile.Image.ImageSize, tile.Image.Image);
}
// Draw a veil over the area that's not visible. The veil alpha gets stronger as the zoom progresses.
byte startAlpha = 170;
byte maxAlpha = 210;
byte alpha = (byte)Math.Min(maxAlpha, (startAlpha + (60 * (Zoom / 10))));
var colorVisibleArea = new BasicColor(32, 40, 46, alpha);
float visibleAreaWidth = (1 / Zoom) * Frame.Width;
float visibleAreaX = (1 / Zoom) * ContentOffset.X;
var rectLeftArea = new BasicRectangle(0, Frame.Height - realScrollBarHeight, visibleAreaX, realScrollBarHeight);
var rectRightArea = new BasicRectangle(visibleAreaX + visibleAreaWidth, Frame.Height - realScrollBarHeight, Frame.Width - visibleAreaX - visibleAreaWidth, realScrollBarHeight);
//context.DrawRectangle(new BasicRectangle(visibleAreaX, Frame.Height - scrollBarHeight, visibleAreaWidth, scrollBarHeight), new BasicBrush(colorVisibleArea), new BasicPen());
context.DrawRectangle(rectLeftArea, new BasicBrush(colorVisibleArea), new BasicPen());
context.DrawRectangle(rectRightArea, new BasicBrush(colorVisibleArea), new BasicPen());
}
}
private void DrawAlbumCoverZone(IGraphicsContext context, int row, AudioFile audioFile2, DrawCellState state)
{
var pen = new BasicPen();
var penTransparent = new BasicPen();
var brushGradient = new BasicGradientBrush();
var item = _items[row];
//string albumTitle = audioFile != null ? audioFile.AlbumTitle : state.CurrentAlbumTitle; // if this is an empty row, keep last album title
// Check for an album title change (or the last item of the grid)
if (state.CurrentAlbumArtKey == item.AlbumArtKey)
return;
state.CurrentAlbumArtKey = item.AlbumArtKey;
int albumCoverStartIndex = 0;
int albumCoverEndIndex = 0;
// For displaying the album cover, we need to know how many songs of the same album are bundled together
// Start by getting the start index
for (int c = row; c > 0; c--)
{
var previousItem = _items[c];
if (previousItem.AlbumArtKey != item.AlbumArtKey)
{
albumCoverStartIndex = c + 1;
break;
}
}
// Find the end index
for (int c = row + 1; c < _items.Count; c++)
{
var nextItem = _items[c];
// If the album title is different, this means we found the next album title
if (nextItem.AlbumArtKey != item.AlbumArtKey)
{
albumCoverEndIndex = c - 1;
break;
}
// If this is the last item of the grid...
else if (c == _items.Count - 1)
{
albumCoverEndIndex = c;
break;
}
}
var audioFile = _items[albumCoverStartIndex].AudioFile;
// Calculate y and height
int scrollbarOffsetY = (_startLineNumber * _songCache.LineHeight) - VerticalScrollBar.Value;
int y = ((albumCoverStartIndex - _startLineNumber) * _songCache.LineHeight) + _songCache.LineHeight + scrollbarOffsetY;
// Calculate the height of the album cover zone (+1 on end index because the array is zero-based)
int linesToCover = Math.Min(MinimumRowsPerAlbum, (albumCoverEndIndex + 1 - albumCoverStartIndex));
int albumCoverZoneHeight = linesToCover * _songCache.LineHeight;
int heightWithPadding = Math.Min(albumCoverZoneHeight - (_theme.Padding * 2), _songCache.ActiveColumns[0].Width - (_theme.Padding * 2));
// Make sure the height is at least zero (not necessary to draw anything!)
if (albumCoverZoneHeight > 0)
{
// Draw album cover background
var rectAlbumCover = new BasicRectangle(0 - HorizontalScrollBar.Value, y, _songCache.ActiveColumns[0].Width, albumCoverZoneHeight);
brushGradient = new BasicGradientBrush(_theme.AlbumCoverBackgroundColor, _theme.AlbumCoverBackgroundColor, 90);
context.DrawRectangle(rectAlbumCover, brushGradient, penTransparent);
// Measure available width for text
int widthAvailableForText = _columns[0].Width - (_theme.Padding * 2);
// Display titles depending on if an album art was found
var rectAlbumCoverArt = new BasicRectangle();
var rectAlbumTitleText = new BasicRectangle();
var rectArtistNameText = new BasicRectangle();
var sizeAlbumTitle = new BasicRectangle();
var sizeArtistName = new BasicRectangle();
bool useAlbumArtOverlay = false;
bool displayArtistNameAndAlbumTitle = false;
// Try to extract image from cache
IBasicImage imageAlbumCover = null;
SongGridViewImageCache cachedImage = null;
try
{
cachedImage = _imageCache.FirstOrDefault(x => x.Key == item.AlbumArtKey);
}
catch (Exception ex)
{
Tracing.Log(ex);
}
if (cachedImage != null)
imageAlbumCover = cachedImage.Image;
// Album art not found in cache; try to find an album cover in one of the file
if (cachedImage == null)
{
try
{
// Check if the album cover is already in the pile
bool albumCoverFound = false;
foreach (var arg in _workerUpdateAlbumArtPile)
{
// Match by file path
if (arg.AudioFile.FilePath.ToUpper() == audioFile.FilePath.ToUpper())
{
albumCoverFound = true;
}
}
// Add to the pile only if the album cover isn't already in it
if (!albumCoverFound)
{
// Add item to update album art worker pile
var arg = new SongGridViewBackgroundWorkerArgument();
arg.AudioFile = audioFile;
arg.LineIndex = row;
arg.RectAlbumArt = new BasicRectangle(0, 0, heightWithPadding, heightWithPadding);
_workerUpdateAlbumArtPile.Add(arg);
}
}
catch(Exception ex)
{
Console.WriteLine("SongGridViewControl - Failed to load cache image: {0}" , ex);
}
}
// There are at least two lines; is there an album cover to display?
if (imageAlbumCover == null)
{
// There is no album cover to display; display only text.
// Set string format
//stringFormat.Alignment = StringAlignment.Center;
//stringFormat.Trimming = StringTrimming.EllipsisWord;
sizeArtistName = context.MeasureText(audioFile.ArtistName, new BasicRectangle(0, 0, widthAvailableForText, heightWithPadding), _theme.FontNameAlbumArtTitle, _theme.FontSize + 2);
sizeAlbumTitle = context.MeasureText(audioFile.AlbumTitle, new BasicRectangle(0, 0, widthAvailableForText, heightWithPadding), _theme.FontNameAlbumArtSubtitle, _theme.FontSize);
// Display the album title at the top of the zome
rectArtistNameText = new BasicRectangle(_theme.Padding - HorizontalScrollBar.Value, y + _theme.Padding, widthAvailableForText, heightWithPadding);
rectAlbumTitleText = new BasicRectangle(_theme.Padding - HorizontalScrollBar.Value, y + _theme.Padding + sizeArtistName.Height, widthAvailableForText, heightWithPadding);
displayArtistNameAndAlbumTitle = true;
useAlbumArtOverlay = true;
}
else
{
// There is an album cover to display with more than 2 lines.
// Set string format
//stringFormat.Alignment = StringAlignment.Near;
//stringFormat.Trimming = StringTrimming.EllipsisWord;
float widthRemainingForText = _columns[0].Width - (_theme.Padding * 3) - heightWithPadding;
sizeArtistName = context.MeasureText(audioFile.ArtistName, new BasicRectangle(0, 0, widthRemainingForText, heightWithPadding), _theme.FontNameAlbumArtTitle, _theme.FontSize + 2);
sizeAlbumTitle = context.MeasureText(audioFile.AlbumTitle, new BasicRectangle(0, 0, widthRemainingForText, heightWithPadding), _theme.FontNameAlbumArtSubtitle, _theme.FontSize);
// Try to center the cover art + padding + max text width
//float maxWidth = Math.Max(sizeArtistName.Width, sizeAlbumTitle.Width);
float albumCoverX = _theme.Padding - 2; // (_columns[0].Width - heightWithPadding - _theme.Padding - _theme.Padding - maxWidth) / 2;
float artistNameY = _theme.Padding + 1; // (albumCoverZoneHeight - sizeArtistName.Height - sizeAlbumTitle.Height) / 2;
// Display the album title at the top of the zome
rectArtistNameText = new BasicRectangle(albumCoverX + heightWithPadding + _theme.Padding - HorizontalScrollBar.Value, y + artistNameY, widthRemainingForText, heightWithPadding);
rectAlbumTitleText = new BasicRectangle(albumCoverX + heightWithPadding + _theme.Padding - HorizontalScrollBar.Value, y + artistNameY + sizeArtistName.Height + (_theme.Padding / 8f), widthRemainingForText, heightWithPadding);
rectAlbumCoverArt = new BasicRectangle(albumCoverX - HorizontalScrollBar.Value, y + _theme.Padding, heightWithPadding, heightWithPadding);
displayArtistNameAndAlbumTitle = widthRemainingForText > 20;
useAlbumArtOverlay = true;
}
// Display album cover
if (imageAlbumCover != null)
context.DrawImage(rectAlbumCoverArt, new BasicRectangle(0, 0, imageAlbumCover.ImageSize.Width, imageAlbumCover.ImageSize.Height), imageAlbumCover.Image);
//context.DrawImage(rectAlbumCoverArt, new BasicRectangle(0, 0, rectAlbumCoverArt.Width, rectAlbumCoverArt.Height), imageAlbumCover.Image);
// if (useAlbumArtOverlay)
// {
// // Draw artist name and album title background
// var rectArtistNameBackground = new BasicRectangle(rectArtistNameText.X - (_theme.Padding / 2), rectArtistNameText.Y - (_theme.Padding / 4), sizeArtistName.Width + _theme.Padding, sizeArtistName.Height + (_theme.Padding / 2));
// var rectAlbumTitleBackground = new BasicRectangle(rectAlbumTitleText.X - (_theme.Padding / 2), rectAlbumTitleText.Y - (_theme.Padding / 4), sizeAlbumTitle.Width + _theme.Padding, sizeAlbumTitle.Height + (_theme.Padding / 2));
// var brushTextBackground = new BasicBrush(new BasicColor(0, 0, 0, 30));
// context.DrawRectangle(rectArtistNameBackground, brushTextBackground, penTransparent);
// context.DrawRectangle(rectAlbumTitleBackground, brushTextBackground, penTransparent);
// }
if (displayArtistNameAndAlbumTitle)
{
context.DrawText(audioFile.ArtistName, rectArtistNameText, _theme.HeaderTextColor, _theme.FontNameAlbumArtTitle, _theme.FontSize + 2);
context.DrawText(audioFile.AlbumTitle, rectAlbumTitleText, _theme.HeaderTextColor, _theme.FontNameAlbumArtSubtitle, _theme.FontSize);
}
// Draw horizontal line to distinguish albums
// Part 1: Draw line over grid
pen = new BasicPen(new BasicBrush(new BasicColor(180, 180, 180)), 1);
context.DrawLine(new BasicPoint(_columns[0].Width, y), new BasicPoint(Frame.Width, y), pen);
// Part 2: Draw line over album art zone, in a lighter color
pen = new BasicPen(new BasicBrush(new BasicColor(115, 115, 115)), 1);
context.DrawLine(new BasicPoint(0, y), new BasicPoint(_columns[0].Width, y), pen);
}
}
