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enlarge initial pdf page size: address #143.

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Paddy Xu
2018-01-09 23:49:16 +02:00
parent 3be25ac28f
commit c622ed748a
2 changed files with 26 additions and 10 deletions
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30
QuickLook.Plugin/QuickLook.Plugin.PDFViewer/PdfViewerControl.xaml.cs
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@@ -35,13 +35,12 @@ namespace QuickLook.Plugin.PDFViewer
/// </summary>
public partial class PdfViewerControl : UserControl, INotifyPropertyChanged, IDisposable
{
private const double MinZoomFactor = 0.1d;
private const double MaxZoomFactor = 5d;
private int _changePageDeltaSum;
private bool _initPage = true;
private double _maxZoomFactor = double.NaN;
private double _minZoomFactor = double.NaN;
private bool _pdfLoaded;
private double _viewRenderFactor = 0.5d;
private double _viewRenderFactor = double.NaN;
public PdfViewerControl()
{
@@ -159,7 +158,17 @@ namespace QuickLook.Plugin.PDFViewer
var pos = pagePanel.GetScrollPosition();
double factor;
if (pagePanel.ZoomToFit)
// First time showing. Set thresholds here.
if (double.IsNaN(_minZoomFactor) || double.IsNaN(_maxZoomFactor))
{
factor = Math.Min(pagePanel.ActualHeight / PdfHandle.Pages[CurrentPage].Height,
pagePanel.ActualWidth / PdfHandle.Pages[CurrentPage].Width);
_viewRenderFactor = factor;
_minZoomFactor = 0.1 * factor;
_maxZoomFactor = 5 * factor;
}
else if (pagePanel.ZoomToFit)
{
factor = Math.Min(pagePanel.ActualHeight / PdfHandle.Pages[CurrentPage].Height,
pagePanel.ActualWidth / PdfHandle.Pages[CurrentPage].Width);
@@ -167,10 +176,10 @@ namespace QuickLook.Plugin.PDFViewer
else
{
factor = pagePanel.ZoomFactor * _viewRenderFactor;
factor = Math.Max(factor, MinZoomFactor);
factor = Math.Min(factor, MaxZoomFactor);
pagePanel.MinZoomFactor = MinZoomFactor / factor;
pagePanel.MaxZoomFactor = MaxZoomFactor / factor;
factor = Math.Max(factor, _minZoomFactor);
factor = Math.Min(factor, _maxZoomFactor);
pagePanel.MinZoomFactor = _minZoomFactor / factor;
pagePanel.MaxZoomFactor = _maxZoomFactor / factor;
}
var image = PdfHandle.Pages[CurrentPage].Render(factor);
@@ -221,7 +230,8 @@ namespace QuickLook.Plugin.PDFViewer
tempHandle.Close();
}
return size;
return new Size(size.Width * 3, size.Height * 3);
}
public void LoadPdf(string path)