private void LoadItems()
{
foreach (var item in _rawItems)
{
item.OnBrowserClosed();
}
_rawItems.Clear();
using (var db = new Database())
{
var table = db.SelectDataTable("select * from img where location_id = @location_id", "@location_id", _loc.RowId);
foreach (DataRow row in table.Rows)
{
var item = new LBItem(this, ImageRec.FromDataRow(row), _loc, _items.Count);
_rawItems.Add(item);
}
}
lock (_thumbnailLock)
{
_items = _rawItems.ToList();
ApplySort();
_itemLayoutUpdateRequired = true;
RenumberItems();
RefreshStatusCounts();
UpdateScroll();
SetSelection(-1, -1);
Invalidate();
}
Global.FileDeleted += Global_FileDeleted;
}
private void LocationBrowser_MouseMove(object sender, MouseEventArgs e)
{
try
{
if (e.Button.HasFlag(MouseButtons.Left))
{
var index = HitTest(e.Location);
if (index != -1)
{
SetSelection(_selStart, index);
}
}
else if (e.Button == MouseButtons.None)
{
var index = HitTest(e.Location);
if (index != -1)
{
if (_mouseOverItem != _items[index])
{
if (_mouseOverItem != null)
{
_mouseOverItem.MouseOverRating = 0;
}
_mouseOverItem = _items[index];
var rating = HitTestRating(index, e.Location);
if (rating != -1)
{
_mouseOverItem.MouseOverRating = rating;
}
}
else // mouse is still over mouse-over item
{
var rating = HitTestRating(index, e.Location);
if (rating != -1)
{
_mouseOverItem.MouseOverRating = rating;
}
else
{
_mouseOverItem.MouseOverRating = 0;
}
}
}
else // index == -1
{
if (_mouseOverItem != null)
{
_mouseOverItem.MouseOverRating = 0;
_mouseOverItem = null;
}
}
}
}
catch (Exception ex)
{
this.ShowError(ex);
}
}
private void ThumbnailRetrievalProc(object state)
{
using (var db = new Database())
{
while (true)
{
LBItem item = null;
lock (_thumbnailLock)
{
if (_thumbnailQueue.Count == 0)
{
_thumbnailQueue = null;
return;
}
item = _thumbnailQueue.Peek(); // Don't remove it from the queue until the image is fully loaded
if (!ItemIsVisible(item.Index)) // If item is no longer visible on the screen, then don't spend time getting the thumbnail.
{
_thumbnailQueue.Dequeue();
item = null;
}
}
if (item != null)
{
var now = DateTime.Now;
if (now.Subtract(_lastThumbnailGenerate).TotalMilliseconds < k_thumbnailWait)
{
Thread.Sleep(k_thumbnailWait - (int)now.Subtract(_lastThumbnailGenerate).TotalMilliseconds);
}
SetStatusMessage(string.Format("Getting Thumbnail: {0}", item.ImageRec.Location));
item.ImageRec.Retrieve(db);
item.ImageRec.Release();
var thumb = item.ImageRec.Thumbnail;
if (thumb != null)
{
BeginInvoke(new Action(() => { OnThumbnailUpdated(item); }));
}
lock (_thumbnailLock)
{
_thumbnailQueue.Dequeue();
if (_thumbnailQueue.Count == 0)
{
_thumbnailQueue = null;
return;
}
}
_lastThumbnailGenerate = DateTime.Now;
}
}
}
}
private void OnThumbnailUpdated(LBItem item)
{
if (item != null && item.Index >= 0)
{
if (ItemIsVisible(item.Index))
{
Invalidate();
}
}
}
private void OpenItem(LBItem item)
{
var fileName = item.ImageRec.LocationOnDisk;
if (string.IsNullOrEmpty(fileName) || !System.IO.File.Exists(fileName))
{
this.ShowError(Res.Error_ImageFileMissing, fileName);
Global.OnFileDeleted(item.ImageRec.LocationOnDisk);
return;
}
System.Diagnostics.Process.Start(fileName);
}
private int GetItemIndex(LBItem item)
{
var index = 0;
foreach (var i in _items)
{
if (i == item)
{
return(index);
}
index++;
}
return(-1);
}
private void QueueThumbnailRetrieval(LBItem item)
{
lock (_thumbnailLock)
{
if (_thumbnailQueue == null)
{
_thumbnailQueue = new Queue <LBItem>();
_thumbnailQueue.Enqueue(item);
System.Threading.ThreadPool.QueueUserWorkItem(ThumbnailRetrievalProc);
}
else if (!_thumbnailQueue.Contains(item))
{
_thumbnailQueue.Enqueue(item);
}
}
}
private void DrawItem(Graphics g, LBItem item, Rectangle itemBounds)
{
// Highlight
var selected = ItemIsSelected(item.Index);
if (selected)
{
g.FillRectangle(SystemBrushes.Highlight, itemBounds);
}
// Border
if (_borderPen == null)
{
_borderPen = new Pen(SystemBrushes.Control);
}
g.DrawRectangle(_borderPen, itemBounds);
// Thumbnail background
var maxThumbRect = new Rectangle(itemBounds.Left + _spacer, itemBounds.Top + _spacer, _maxThumbWidth, _maxThumbHeight);
if (!selected)
{
var thumbBackgroundRect = maxThumbRect;
thumbBackgroundRect.Inflate(1, 1);
g.FillRectangle(SystemBrushes.Control, thumbBackgroundRect);
}
// Thumbnail
var thumb = item.ImageRec.Thumbnail;
if (thumb == null)
{
QueueThumbnailRetrieval(item);
}
else
{
var imgRect = new RectangleF(PointF.Empty, thumb.Size);
imgRect = imgRect.ScaleRectWidth(_maxThumbWidth);
if (imgRect.Height > _maxThumbHeight)
{
imgRect = imgRect.ScaleRectHeight(_maxThumbHeight);
}
imgRect = imgRect.CenterInside(maxThumbRect);
g.DrawImage(thumb, imgRect);
}
var infoLeft = itemBounds.Left + _maxThumbWidth + _spacer * 2;
var infoWidth = itemBounds.Right - infoLeft;
if (infoWidth > 0)
{
var infoPt = new Point(infoLeft, itemBounds.Top + _spacer);
// File Name
var stringSize = g.MeasureString(item.RelativeLocation, Font, infoWidth);
g.DrawString(item.RelativeLocation, Font, selected ? SystemBrushes.HighlightText : SystemBrushes.WindowText,
new RectangleF(infoPt, stringSize));
infoPt.Y += (int)Math.Ceiling(stringSize.Height) + _spacer;
// Size
var imgSize = item.ImageRec.Size;
if (imgSize.HasValue)
{
if (_sizeFont == null)
{
_sizeFont = new Font(Font.FontFamily, Font.Size * .9f);
}
var str = imgSize.Value.ToSizeString();
stringSize = g.MeasureString(str, _sizeFont);
g.DrawString(str, _sizeFont, selected ? SystemBrushes.HighlightText : SystemBrushes.WindowText,
new RectangleF(infoPt, stringSize));
infoPt.Y += (int)Math.Ceiling(stringSize.Height);
}
// Rating
infoPt.Y += _spacer;
var pt = infoPt;
var starSize = new Size((int)Math.Round(Images.StarUnrated.Width * g.DpiX / 96.0f),
(int)Math.Round(Images.StarUnrated.Height * g.DpiY / 96.0f));
for (int i = 0; i < 5; i++)
{
item.StarRects[i] = new Rectangle(pt, starSize);
pt.X += starSize.Width;
}
var rating = item.ImageRec.Rating;
if (item.MouseOverRating > 0 && item.MouseOverRating != rating)
{
for (int i = 1; i <= 5; i++)
{
if (item.MouseOverRating >= i)
{
g.DrawImage(Images.StarMouseOver1, item.StarRects[i - 1]);
}
else
{
g.DrawImage(Images.StarMouseOver0, item.StarRects[i - 1]);
}
}
}
else if (rating > 0)
{
for (int i = 1; i <= 5; i++)
{
if (rating >= i)
{
g.DrawImage(Images.StarRated1, item.StarRects[i - 1]);
}
else
{
g.DrawImage(Images.StarRated0, item.StarRects[i - 1]);
}
}
}
else
{
for (int i = 0; i < 5; i++)
{
g.DrawImage(Images.StarUnrated, item.StarRects[i]);
}
}
}
}