private static void Scale(RegionSelector selector)
{
Rect region = new Rect(selector.SourceX, selector.SourceY, selector.SourceWidth, selector.SourceHeight);
selector.thumbnail.DrawnRegion = region;
selector.thumbnail.Scale = Math.Min(ViewerWidth / region.Width, ViewerHeight / region.Height);
}
private void panelRegionSelectionToolStripMenuItem_Click(object sender, EventArgs e)
{
ThumbnailPanel panel = (ThumbnailPanel)panelContextMenuStrip.SourceControl;
RegionSelector selector = new RegionSelector();
selector.Load += (eventSender, eventArgs) =>
{
selector.SetWindow(panel.GetWindow(), panel.ClientAreaOnly);
selector.DrawnRegion = panel.DrawnRegion;
};
if (selector.ShowDialog(this) == DialogResult.OK)
{
panel.DrawnRegion = selector.DrawnRegion;
}
}
private static void SourceHeightChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RegionSelector selector = d as RegionSelector;
if (selector != null)
{
double height = (double)e.NewValue;
double sourceHeight = selector.thumbnail.SourceSize.Height;
if (height < 0 || selector.SourceY + height > sourceHeight)
{
selector.SourceHeight = sourceHeight - selector.SourceX;
}
Scale(selector);
}
}
private static void SourceWidthChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RegionSelector selector = d as RegionSelector;
if (selector != null)
{
double width = (double)e.NewValue;
double sourceWidth = selector.thumbnail.SourceSize.Width;
if (width < 0 || selector.SourceX + width > sourceWidth)
{
selector.SourceWidth = sourceWidth - selector.SourceX;
}
Scale(selector);
}
}
private static void SourceYChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RegionSelector selector = d as RegionSelector;
if (selector != null)
{
double y = (double)e.NewValue;
double sourceHeight = selector.thumbnail.SourceSize.Height;
if (y < 0 || y >= sourceHeight)
{
selector.SourceY = (double)e.OldValue;
}
if (y + selector.SourceHeight > sourceHeight)
{
selector.SourceHeight = sourceHeight - y;
}
Scale(selector);
}
}
private static void SourceXChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RegionSelector selector = d as RegionSelector;
if (selector != null)
{
double x = (double)e.NewValue;
double sourceWidth = selector.thumbnail.SourceSize.Width;
if (x < 0 || x >= sourceWidth)
{
selector.SourceX = (double)e.OldValue;
}
if (x + selector.SourceWidth > sourceWidth)
{
selector.SourceWidth = sourceWidth - x;
}
Scale(selector);
}
}
private void SetContextMenu(Thumbnail thumbnail)
{
ContextMenu contextMenu = new ContextMenu();
MenuItem toggleItem = new MenuItem()
{
Header = Globalization.UIMessages.ToggleClientOnlyMenuItem,
IsCheckable = true,
};
Binding checkedBinding = new Binding("IsChecked")
{
Source = toggleItem,
};
thumbnail.SetBinding(Thumbnail.ClientAreaOnlyProperty, checkedBinding);
contextMenu.Items.Add(toggleItem);
MenuItem selectorItem = new MenuItem()
{
Header = Globalization.UIMessages.SelectRegionMenuItem,
};
Binding enabledBinding = new Binding("IsEnabled")
{
Source = selectorItem,
Converter = Converters.BooleanToggleConverter.Instance,
Mode = BindingMode.OneWayToSource,
};
toggleItem.SetBinding(MenuItem.IsCheckedProperty, enabledBinding);
selectorItem.Click += (sender, e) =>
{
Rect region = thumbnail.DrawnRegion;
RegionSelector selector = new RegionSelector();
selector.thumbnail.Scale = Math.Min(RegionSelector.ViewerWidth / region.Width, RegionSelector.ViewerHeight / region.Height);
selector.thumbnail.ClientAreaOnly = thumbnail.ClientAreaOnly;
selector.Loaded += (a, b) =>
{
selector.Background = Brushes.Transparent;
selector.ExtendFrame(RegionSelector.AeroRegion, Colors.Transparent);
selector.thumbnail.SetWindow(thumbnail.Target);
selector.SourceX = region.X;
selector.SourceY = region.Y;
selector.SourceWidth = region.Width;
selector.SourceHeight = region.Height;
};
selector.ContentRendered += (a, b) =>
{
selector.thumbnail.DrawnRegion = region;
};
if (selector.ShowDialog().GetValueOrDefault(false) == true)
{
thumbnail.DrawnRegion = selector.thumbnail.DrawnRegion;
}
};
contextMenu.Items.Add(selectorItem);
contextMenu.Items.Add(new Separator());
MenuItem removeItem = new MenuItem()
{
Header = Globalization.UIMessages.RemoveMenuItem,
};
removeItem.Click += (sender, e) =>
{
thumbnail.Dispose();
canvas.Children.Remove(thumbnail);
};
contextMenu.Items.Add(removeItem);
thumbnail.ContextMenu = contextMenu;
}