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Fix #154: Switch to Pdfium; better PDF async loading

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This commit is contained in:
Paddy Xu
2017-12-22 01:28:30 +02:00
parent 1bcfd8db08
commit fe39854b57
17 changed files with 1675 additions and 545 deletions
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78
QuickLook.Plugin/QuickLook.Plugin.PDFViewer/PdfViewerControl.xaml.cs
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@@ -21,8 +21,11 @@ using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using PDFiumSharp;
using QuickLook.ExtensionMethods;
namespace QuickLook.Plugin.PDFViewer
@@ -35,9 +38,10 @@ namespace QuickLook.Plugin.PDFViewer
private const double MinZoomFactor = 0.1d;
private const double MaxZoomFactor = 5d;
private int _changePageDeltaSum;
private bool _initPage = true;
private bool _pdfLoaded;
private double _viewRenderFactor = 1d;
private double _viewRenderFactor = 0.5d;
public PdfViewerControl()
{
@@ -49,13 +53,14 @@ namespace QuickLook.Plugin.PDFViewer
pagePanel.ImageScrolled += NavigatePage;
}
public ObservableCollection<int> PageIds { get; set; } = new ObservableCollection<int>();
public ObservableCollection<BitmapSource> PageThumbnails { get; set; } =
new ObservableCollection<BitmapSource>();
public PdfFile PdfHandleForThumbnails { get; private set; }
public PdfDocument PdfHandleForThumbnails { get; private set; }
public PdfFile PdfHandle { get; private set; }
public PdfDocument PdfHandle { get; private set; }
public int TotalPages => PdfHandle.TotalPages;
public int TotalPages => PdfHandle.Pages.Count;
public int CurrentPage
{
@@ -81,9 +86,9 @@ namespace QuickLook.Plugin.PDFViewer
}
_pdfLoaded = false;
PdfHandleForThumbnails?.Dispose();
PdfHandleForThumbnails?.Close();
PdfHandleForThumbnails = null;
PdfHandle?.Dispose();
PdfHandle?.Close();
PdfHandle = null;
}
@@ -132,7 +137,7 @@ namespace QuickLook.Plugin.PDFViewer
private void NextPage()
{
if (CurrentPage < PdfHandle.TotalPages - 1)
if (CurrentPage < TotalPages - 1)
{
CurrentPage++;
pagePanel.ScrollToTop();
@@ -163,9 +168,7 @@ namespace QuickLook.Plugin.PDFViewer
pagePanel.MinZoomFactor = MinZoomFactor / factor;
pagePanel.MaxZoomFactor = MaxZoomFactor / factor;
var bitmap = PdfHandle.GetPage(CurrentPage, factor);
var image = bitmap.ToBitmapSource();
bitmap.Dispose();
var image = PdfHandle.Pages[CurrentPage].Render(factor);
pagePanel.Source = image;
pagePanel.ResetZoom();
@@ -188,38 +191,59 @@ namespace QuickLook.Plugin.PDFViewer
CurrentPageChanged?.Invoke(this, new EventArgs());
ReRenderCurrentPage();
if (_initPage)
{
_initPage = false;
pagePanel.DoZoomToFit();
}
}
public static Size GetDesiredControlSizeByFirstPage(string path)
{
var tempHandle = new PdfFile(path);
Size size;
using (var tempHandle = new PdfDocument(path))
{
size = new Size(0, 0);
tempHandle.Pages.Take(5).ForEach(p =>
{
size.Width = Math.Max(size.Width, p.Width);
size.Height = Math.Max(size.Height, p.Height);
});
var size = tempHandle.GetPageSize(0, 1d);
tempHandle.Dispose();
if (tempHandle.TotalPages > 1)
size.Width += /*listThumbnails.ActualWidth*/ 150;
if (tempHandle.Pages.Count > 1)
size.Width += /*listThumbnails.ActualWidth*/ 150;
tempHandle.Close();
}
return size;
}
public void LoadPdf(string path)
{
PageIds.Clear();
PdfHandleForThumbnails = new PdfFile(path);
PdfHandle = new PdfFile(path);
PdfHandle = new PdfDocument(path);
_pdfLoaded = true;
// fill thumbnails list
Enumerable.Range(0, PdfHandle.TotalPages).ForEach(PageIds.Add);
OnPropertyChanged(nameof(PageIds));
BeginLoadThumbnails(path);
if (PdfHandle.TotalPages < 2)
if (PdfHandle.Pages.Count < 2)
listThumbnails.Visibility = Visibility.Collapsed;
}
CurrentPage = 0;
pagePanel.DoZoomToFit();
private void BeginLoadThumbnails(string path, string password = null)
{
new Task(() =>
{
using (var handle = new PdfDocument(path, password))
{
handle.Pages.ForEach(p =>
{
var bs = p.RenderThumbnail();
Dispatcher.BeginInvoke(new Action(() => PageThumbnails.Add(bs)));
});
}
}).Start();
}
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)