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Finish ImageViewer; mouse drag to scroll

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This commit is contained in:
Paddy Xu
2017-04-26 00:48:40 +03:00
parent c38c640af5
commit fa764b2e69
20 changed files with 445 additions and 61 deletions
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43
QuickLook.Plugin.PDFViewer/PdfViewerControl.xaml.cs
View File

@@ -15,6 +15,7 @@ namespace QuickLook.Plugin.PDFViewer
/// </summary>
public partial class PdfViewerControl : UserControl, INotifyPropertyChanged, IDisposable
{
private Point? _dragInitPos;
private PreviewMouseWheelMonitor _whellMonitor;
public PdfViewerControl()
@@ -36,6 +37,8 @@ namespace QuickLook.Plugin.PDFViewer
public double ZoomFactor { get; set; }
public double MinZoomFactor { get; set; }
public int TotalPages => PdfHandle.TotalPages;
public int CurrectPage
@@ -114,6 +117,8 @@ namespace QuickLook.Plugin.PDFViewer
pageViewPanelImage.LayoutTransform = new ScaleTransform(viewZoom, viewZoom);
pageViewPanel.InvalidateMeasure();
// critical for calcuating offset
pageViewPanel.ScrollToHorizontalOffset(0);
pageViewPanel.ScrollToVerticalOffset(0);
@@ -140,6 +145,8 @@ namespace QuickLook.Plugin.PDFViewer
// reset view zoom factor
pageViewPanelImage.LayoutTransform = new ScaleTransform();
pageViewPanel.InvalidateMeasure();
GC.Collect();
}
@@ -164,6 +171,7 @@ namespace QuickLook.Plugin.PDFViewer
var factor = Math.Min(pageViewPanel.ActualWidth / size.Width, pageViewPanel.ActualHeight / size.Height);
ZoomFactor = factor;
MinZoomFactor = factor;
ReRenderCurrentPage();
}
@@ -175,7 +183,7 @@ namespace QuickLook.Plugin.PDFViewer
var size = tempHandle.GetPageSize(0, 1d);
tempHandle.Dispose();
size.Width += /*listThumbnails.ActualWidth*/ 150 + 1;
size.Width += /*listThumbnails.ActualWidth*/ 150;
return size;
}
@@ -201,8 +209,39 @@ namespace QuickLook.Plugin.PDFViewer
// register events
listThumbnails.SelectionChanged += UpdatePageViewWhenSelectionChanged;
//pageViewPanel.SizeChanged += ReRenderCurrentPageWhenSizeChanged;
pageViewPanel.PreviewMouseWheel += NavigatePage;
StartMouseWhellDelayedZoomMonitor(pageViewPanel);
pageViewPanel.PreviewMouseLeftButtonDown += DragScrollStart;
pageViewPanel.PreviewMouseMove += DragScrolling;
}
private void DragScrolling(object sender, MouseEventArgs e)
{
if (!_dragInitPos.HasValue)
return;
if (e.LeftButton == MouseButtonState.Released)
{
_dragInitPos = null;
return;
}
e.Handled = true;
var delta = _dragInitPos.Value - e.GetPosition(pageViewPanel);
pageViewPanel.ScrollToHorizontalOffset(delta.X);
pageViewPanel.ScrollToVerticalOffset(delta.Y);
}
private void DragScrollStart(object sender, MouseButtonEventArgs e)
{
_dragInitPos = e.GetPosition(pageViewPanel);
var temp = _dragInitPos.Value; // Point is a type value
temp.Offset(pageViewPanel.HorizontalOffset, pageViewPanel.VerticalOffset);
_dragInitPos = temp;
}
private void StartMouseWhellDelayedZoomMonitor(UIElement ui)
@@ -230,7 +269,7 @@ namespace QuickLook.Plugin.PDFViewer
newZoom = newZoom + e.Delta / 120 * 0.1;
newZoom = Math.Max(newZoom, 0.2);
newZoom = Math.Max(newZoom, MinZoomFactor);
newZoom = Math.Min(newZoom, 3);
ReRenderCurrentPageLowQuality(newZoom / ZoomFactor, false);

4
QuickLook.Plugin.PDFViewer/Plugin.cs
View File

@@ -22,14 +22,12 @@ namespace QuickLook.Plugin.PDFViewer
}
}
public void BoundSize(string path, ViewContentContainer container)
public void Prepare(string path, ViewContentContainer container)
{
_pdfControl = new PdfViewerControl();
var desiredSize = _pdfControl.GetDesiredControlSizeByFirstPage(path);
desiredSize.Width += 150; // add thumbnails column
container.SetPreferedSizeFit(desiredSize, 0.7);
}