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#116: indicate current zoom level for images

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This commit is contained in:
Paddy Xu
2017-11-16 22:47:23 +02:00
parent 734b0e36e3
commit 93dae0a8ca
3 changed files with 58 additions and 4 deletions
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44
QuickLook.Plugin/QuickLook.Plugin.ImageViewer/ImagePanel.xaml.cs
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@@ -25,6 +25,7 @@ using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Threading;
using QuickLook.Annotations;
@@ -41,11 +42,13 @@ namespace QuickLook.Plugin.ImageViewer
private Visibility _backgroundVisibility = Visibility.Visible;
private Point? _dragInitPos;
private Uri _imageSource;
private bool _isZoomFactorFirstSet = true;
private DateTime _lastZoomTime = DateTime.MinValue;
private double _maxZoomFactor = 3d;
private Meta _meta;
private double _minZoomFactor = 0.1d;
private BitmapScalingMode _renderMode = BitmapScalingMode.HighQuality;
private bool _showZoomLevelInfo = true;
private BitmapSource _source;
private double _zoomFactor = 1d;
@@ -77,6 +80,17 @@ namespace QuickLook.Plugin.ImageViewer
Meta = meta;
}
public bool ShowZoomLevelInfo
{
get => _showZoomLevelInfo;
set
{
if (value == _showZoomLevelInfo) return;
_showZoomLevelInfo = value;
OnPropertyChanged();
}
}
public BitmapScalingMode RenderMode
{
get => _renderMode;
@@ -144,6 +158,14 @@ namespace QuickLook.Plugin.ImageViewer
{
_zoomFactor = value;
OnPropertyChanged();
if (_isZoomFactorFirstSet)
{
_isZoomFactorFirstSet = false;
return;
}
if (ShowZoomLevelInfo)
((Storyboard) zoomLevelInfo.FindResource("StoryboardShowZoomLevelInfo")).Begin();
}
}
@@ -194,6 +216,8 @@ namespace QuickLook.Plugin.ImageViewer
private void ImagePanel_SizeChanged(object sender, SizeChangedEventArgs e)
{
UpdateZoomToFitFactor();
if (ZoomToFit)
DoZoomToFit();
}
@@ -295,20 +319,29 @@ namespace QuickLook.Plugin.ImageViewer
}
public void DoZoomToFit()
{
UpdateZoomToFitFactor();
Zoom(ZoomToFitFactor, false, true);
}
private void UpdateZoomToFitFactor()
{
if (viewPanelImage.Source == null)
{
ZoomToFitFactor = 1d;
return;
}
var factor = Math.Min(viewPanel.ActualWidth / viewPanelImage.Source.Width,
viewPanel.ActualHeight / viewPanelImage.Source.Height);
ZoomToFitFactor = factor;
Zoom(factor, false, true);
}
public void ResetZoom()
{
ZoomToFitFactor = 1;
Zoom(1d, true);
}
@@ -317,12 +350,19 @@ namespace QuickLook.Plugin.ImageViewer
if (viewPanelImage.Source == null)
return;
// pause when fit width
if (ZoomFactor < ZoomToFitFactor && factor > ZoomToFitFactor
|| ZoomFactor > ZoomToFitFactor && factor < ZoomToFitFactor)
{
factor = ZoomToFitFactor;
ZoomToFit = true;
}
// pause when 100%
else if (ZoomFactor < 1 && factor > 1 || ZoomFactor > 1 && factor < 1)
{
factor = 1;
ZoomToFit = false;
}
else
{
if (!isToFit)