Disable options that are not currently possible to do when the source is an image.

Currently if the source was a png, jpeg or cbz file we can't do conversions with
ghostscript and also we can't print.  So I will disable the controls for now and
we can look into adding that functionality later if we want.

Disable printing capability for image based formats.

Currently printing is all XPS based.  If the source
document is JPG, PNG or CBZ we don't currently have
a method for creating the XPS content for these.  We
could do a bitmap print or possibly wrap up the images
in a XPS file or just do a direct bitmap print via some
C# magic.  I need to investigate.  For the short time,
though it is simply disabled.

2 files changed, 24 insertions, 6 deletions

diff --git a/platform/windows/gsview/MainWindow.xaml b/platform/windows/gsview/MainWindow.xaml
index 10d126bb..37ae3e1e 100644
--- a/platform/windows/gsview/MainWindow.xaml
+++ b/platform/windows/gsview/MainWindow.xaml
@@ -192,7 +192,7 @@
                 <MenuItem Header="Page Conversions..." Click="ConvertClick" x:Name="xaml_conversions">
                 </MenuItem>
                 <Separator />
-                <MenuItem Header="Print..." Command="Print" InputGestureText="Ctrl+P" x:Name="xaml_print">
+                <MenuItem Header="Print..." Command="Print" InputGestureText="Ctrl+P" x:Name="xaml_print_menu">
                     <MenuItem.Icon>
                         <Image Source="Resources/printer.ico" />
                     </MenuItem.Icon>
diff --git a/platform/windows/gsview/MainWindow.xaml.cs b/platform/windows/gsview/MainWindow.xaml.cs
index c6979231..d29ef907 100644
--- a/platform/windows/gsview/MainWindow.xaml.cs
+++ b/platform/windows/gsview/MainWindow.xaml.cs
@@ -318,6 +318,7 @@ namespace gsview
 		String m_origfile;
 		private gsprint m_ghostprint = null;
 		bool m_isXPS;
+		bool m_isImage;
 		gsOutput m_gsoutput;
 		Convert m_convertwin;
 		PageExtractSave m_extractwin;
@@ -514,7 +515,7 @@ namespace gsview
 			xaml_extractselection.IsEnabled = false;
 			xaml_conversions.IsEnabled = false;
 			xaml_gsmessage.IsEnabled = false;
-			xaml_print.IsEnabled = false;
+			xaml_print_menu.IsEnabled = false;
 			xaml_view.IsEnabled = false;
 			xaml_edit.IsEnabled = false;
 		}
@@ -579,6 +580,7 @@ namespace gsview
 			m_links_on = false;
 			m_doczoom = 1.0;
 			m_isXPS = false;
+			m_isImage = false;
 			//xaml_CancelThumb.IsEnabled = true;
 			m_currpage = 0;
 			m_ignorescrollchange = false;
@@ -833,6 +835,9 @@ namespace gsview
 			/* Set if this is already xps for printing */
 			if (extension.ToUpper() == ".XPS" || extension.ToUpper() == ".OXPS")
 				m_isXPS = true;
+			if (extension.ToUpper() == ".CBZ" || extension.ToUpper() == ".PNG" ||
+				extension.ToUpper() == ".JPG")
+				m_isImage = true;
 			OpenFile2(FileName);
 		}
 
@@ -1019,11 +1024,25 @@ namespace gsview
 			xaml_extractselection.IsEnabled = true;
 			xaml_conversions.IsEnabled = true;
 			xaml_gsmessage.IsEnabled = true;
-			xaml_print.IsEnabled = true;
+			xaml_print_menu.IsEnabled = true;
 			xaml_view.IsEnabled = true;
 			xaml_edit.IsEnabled = true;
-			if (m_isXPS)
+			if (m_isXPS || m_isImage)
 				DisabletoPDF();
+			if (m_isImage)
+			{
+				xaml_Print.IsEnabled = false;
+				xaml_print_menu.IsEnabled = false;
+				xaml_Print.Opacity = 0.5;
+				xaml_print_menu.Opacity = 0.5;
+			}
+			else
+			{
+				xaml_Print.IsEnabled = true;
+				xaml_print_menu.IsEnabled = true;
+				xaml_Print.Opacity = 1.0;
+				xaml_print_menu.Opacity = 1.0;
+			}
 			xaml_OpenProgressGrid.Visibility = System.Windows.Visibility.Collapsed;
 			xaml_VerticalScroll.Visibility = System.Windows.Visibility.Visible;
 			xaml_VerticalScroll.Value = 0;
@@ -1995,7 +2014,7 @@ namespace gsview
 
 		private void ExtractPages(object sender, RoutedEventArgs e)
 		{
-			if (!m_init_done || m_isXPS)
+			if (!m_init_done || m_isXPS || m_isImage)
 				return;
 
 			if (m_extractwin == null || !m_extractwin.IsActive)
@@ -5014,7 +5033,6 @@ namespace gsview
 
 		private void PrintDiagPrint(object PrintDiag)
 		{
-
 			/* If file is already xps then gs need not do this */
 			if (!m_isXPS)
 			{