From 973ce4bf471a1b98a351d02bfa41bde75ead4f90 Mon Sep 17 00:00:00 2001
From: Michael Vrhel <michael.vrhel@artifex.com>
Date: Wed, 19 Feb 2014 17:07:08 -0800
Subject: Fix a few issues related to printing and the UI control.

---
 platform/winrt/gsview/MainWindow.xaml    |  7 +++--
 platform/winrt/gsview/MainWindow.xaml.cs | 26 +++++++++++++---
 platform/winrt/gsview/ghostsharp.cs      | 52 +++++++++++++++++++++++++++++---
 platform/winrt/gsview/gsprint.cs         | 17 ++++++++++-
 4 files changed, 88 insertions(+), 14 deletions(-)

diff --git a/platform/winrt/gsview/MainWindow.xaml b/platform/winrt/gsview/MainWindow.xaml
index aa2da142..7cd80618 100644
--- a/platform/winrt/gsview/MainWindow.xaml
+++ b/platform/winrt/gsview/MainWindow.xaml
@@ -342,7 +342,8 @@
             <ProgressBar x:Name="xaml_PrintProgress" Grid.Row="0" Grid.Column="0" Margin="3" Minimum="0" 
                      Maximum="100" Height="20" HorizontalAlignment="Stretch" />
             <TextBlock Grid.Row="0" Grid.Column="1" VerticalAlignment="Center" Margin="5, 0, 5, 0"><Bold>Printing</Bold></TextBlock>
-            <Button  Grid.Row="0" Grid.Column="2" Width="50" Height="20" Name="xaml_CancelPrint" Click="CancelPrintClick" Background="Transparent" BorderBrush="Transparent" Margin="5,0,5,0">
+            <!-- Asyc Cancel crashes in windows 8 for this xps creation -->
+           <!-- <Button  Grid.Row="0" Grid.Column="2" Width="50" Height="20" Name="xaml_CancelPrint" Click="CancelPrintClick" Background="Transparent" BorderBrush="Transparent" Margin="5,0,5,0">
                 <Button.Template>
                     <ControlTemplate TargetType="{x:Type Button}">
                         <Grid>
@@ -356,7 +357,7 @@
                     </ControlTemplate>
                 </Button.Template>
                 <TextBlock><Bold>Cancel</Bold></TextBlock>
-            </Button>
+            </Button> -->
         </Grid>
 
         <!-- The progress bar that runs during distilling -->
@@ -368,7 +369,7 @@
             </Grid.ColumnDefinitions>
             <ProgressBar x:Name="xaml_DistillProgress" Grid.Row="0" Grid.Column="0" Margin="3" Minimum="0" 
                      Maximum="100" Height="20" HorizontalAlignment="Stretch"/>
-            <TextBlock Grid.Row="0" Grid.Column="1" VerticalAlignment="Center" Margin="5, 0, 5, 0"><Bold>Distilling</Bold></TextBlock>
+            <TextBlock x:Name="xaml_DistillName" Grid.Row="0" Grid.Column="1" VerticalAlignment="Center" Margin="5, 0, 5, 0"><Bold>Distilling</Bold></TextBlock>
             <Button  Grid.Row="0" Grid.Column="2" Width="50" Height="20" Name="xaml_CancelDistill" Click="CancelDistillClick" Background="Transparent" BorderBrush="Transparent" Margin="5,0,5,0">
                 <Button.Template>
                     <ControlTemplate TargetType="{x:Type Button}">
diff --git a/platform/winrt/gsview/MainWindow.xaml.cs b/platform/winrt/gsview/MainWindow.xaml.cs
index 472d031c..4c960396 100644
--- a/platform/winrt/gsview/MainWindow.xaml.cs
+++ b/platform/winrt/gsview/MainWindow.xaml.cs
@@ -93,6 +93,7 @@ static class Constants
 	public const int SEARCH_FORWARD = 1;
 	public const int SEARCH_BACKWARD = -1;
 	public const int TEXT_NOT_FOUND = -1;
+	public const int DEFAULT_GS_RES = 300;
 }
 
 namespace gsview
@@ -410,6 +411,13 @@ namespace gsview
 				ShowMessage(NotifyType_t.MESS_STATUS, "GS busy. Cancel to open new file."); 
 				return;
 			}
+
+			if (m_ghostprint != null && m_ghostprint.IsBusy())
+			{
+				ShowMessage(NotifyType_t.MESS_STATUS, "Let printing complete"); 
+				return;
+			}
+
 			OpenFileDialog dlg = new OpenFileDialog();
 			dlg.Filter = "Document Files(*.ps;*.eps;*.pdf;*.xps;*.cbz)|*.ps;*.eps;*.pdf;*.xps;*.cbz|All files (*.*)|*.*";
 			dlg.FilterIndex = 1;
@@ -426,11 +434,14 @@ namespace gsview
 				if (extension.ToUpper() == ".PS" || extension.ToUpper() == ".EPS")
 				{
 					xaml_DistillProgress.Value = 0;
-					if (m_ghostscript.DistillPS(dlg.FileName) == gsStatus.GS_BUSY)
+					if (m_ghostscript.DistillPS(dlg.FileName, Constants.DEFAULT_GS_RES) == gsStatus.GS_BUSY)
 					{
 						ShowMessage(NotifyType_t.MESS_STATUS, "GS currently busy");
 						return;
 					}
+					xaml_DistillName.Text = "Distilling";
+					xaml_CancelDistill.Visibility = System.Windows.Visibility.Visible;
+					xaml_DistillName.FontWeight = FontWeights.Bold;
 					xaml_DistillGrid.Visibility = System.Windows.Visibility.Visible;
 					return;
 				}
@@ -859,18 +870,23 @@ namespace gsview
 			if (!m_isXPS)
 			{
 				xaml_DistillProgress.Value = 0;
-				if (m_ghostscript.CreateXPS(m_currfile) == gsStatus.GS_BUSY)
+				if (m_ghostscript.CreateXPS(m_currfile, Constants.DEFAULT_GS_RES, m_num_pages) == gsStatus.GS_BUSY)
 				{
 					ShowMessage(NotifyType_t.MESS_STATUS, "GS currently busy");
 					return;
 				}
 				else
 				{
+					/* Right now this is not possible to cancel due to the way 
+					 * that gs is run for xpswrite from pdf */
+					xaml_CancelDistill.Visibility = System.Windows.Visibility.Collapsed;
+					xaml_DistillName.Text = "Convert to XPS";
+					xaml_DistillName.FontWeight = FontWeights.Bold;
 					xaml_DistillGrid.Visibility = System.Windows.Visibility.Visible;
 				}
-
-			}
-			PrintXPS(m_currfile);
+			} 
+			else
+				PrintXPS(m_currfile);
 		}
 
 		private void PrintXPS(String file)
diff --git a/platform/winrt/gsview/ghostsharp.cs b/platform/winrt/gsview/ghostsharp.cs
index f945ee1f..c9882a7b 100644
--- a/platform/winrt/gsview/ghostsharp.cs
+++ b/platform/winrt/gsview/ghostsharp.cs
@@ -77,6 +77,7 @@ namespace gsview
 		public String inputfile;
 		public GS_Task_t task;
 		public GS_Result_t result;
+		public int num_pages;
 	};
 
 	public class gsEventArgs : EventArgs
@@ -202,6 +203,31 @@ namespace gsview
 		{
 			String output = Marshal.PtrToStringAnsi(pointer);
 			gsIOUpdateMain(this, output, count);
+			if (m_params.task == GS_Task_t.CREATE_XPS)
+			{
+				/* See if we have a page number */
+				if (count >= 7 && output.Substring(0, 4) == "Page")
+				{
+					String page = output.Substring(5, count - 6);
+					int numVal;
+					try
+					{
+						numVal = System.Convert.ToInt32(page);
+
+						double perc = 100.0 * (double)numVal / (double)m_params.num_pages;
+						m_worker.ReportProgress((int)perc);
+					}
+					catch (FormatException e)
+					{
+						Console.WriteLine("XPSPrint Error: Input string is not a sequence of digits.");
+					}
+					catch (OverflowException e)
+					{
+						Console.WriteLine("XPSPrint Error: The number cannot fit in an Int32.");
+					}
+					
+				}
+			}
 			return count;
 		}
 
@@ -214,6 +240,7 @@ namespace gsview
 
 		IntPtr gsInstance;
 		BackgroundWorker m_worker;
+		gsParams_t m_params;
 		/* Callbacks to Main */
 		internal delegate void gsIOCallBackMain(object gsObject, String mess, int len);
 		internal event gsIOCallBackMain gsIOUpdateMain;
@@ -458,6 +485,12 @@ namespace gsview
 		{
 			gsParams_t Value;
 			gsEventArgs info;
+			gsParams_t Params = (gsParams_t) e.Result;
+
+			if (Params.task == GS_Task_t.PS_DISTILL)
+				m_worker.DoWork -= new DoWorkEventHandler(gsWork2);
+			else
+				m_worker.DoWork -= new DoWorkEventHandler(gsWork1);
 
 			if (e.Cancelled)
 			{
@@ -481,27 +514,31 @@ namespace gsview
 			gsUpdateMain(this, info);
 		}
 
-		public gsStatus DistillPS(String FileName)
+		public gsStatus DistillPS(String FileName, int resolution)
 		{
 			gsParams_t Params = new gsParams_t(); ;
 
 			Params.device = gsDevice_t.pdfwrite;
 			Params.outputfile = null;
-			Params.resolution = 300;
+			Params.resolution = resolution;
 			Params.inputfile = FileName;
 			Params.outputfile = null;
+			Params.num_pages = -1;
+			Params.task = GS_Task_t.PS_DISTILL;
 			return RunGhostscript(Params);
 		}
 
-		public gsStatus CreateXPS(String FileName)
+		public gsStatus CreateXPS(String FileName, int resolution, int num_pages)
 		{
 			gsParams_t Params = new gsParams_t(); ;
 
 			Params.device = gsDevice_t.xpswrite;
 			Params.outputfile = null;
-			Params.resolution = 300;
+			Params.resolution = resolution;
 			Params.inputfile = FileName;
 			Params.outputfile = null;
+			Params.task = GS_Task_t.CREATE_XPS;
+			Params.num_pages = num_pages;
 			return RunGhostscript(Params);
 		}
 
@@ -531,10 +568,15 @@ namespace gsview
 					m_worker = new BackgroundWorker();
 					m_worker.WorkerReportsProgress = true;
 					m_worker.WorkerSupportsCancellation = true;
-					m_worker.DoWork += new DoWorkEventHandler(gsWork2);
 					m_worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(gsCompleted);
 					m_worker.ProgressChanged += new ProgressChangedEventHandler(gsProgressChanged);
 				}
+				if (Params.task == GS_Task_t.PS_DISTILL)
+					m_worker.DoWork += new DoWorkEventHandler(gsWork2);
+				else
+					m_worker.DoWork += new DoWorkEventHandler(gsWork1);
+
+				m_params = Params;
 				m_worker.RunWorkerAsync(Params);
 				return gsStatus.GS_READY;
 			}
diff --git a/platform/winrt/gsview/gsprint.cs b/platform/winrt/gsview/gsprint.cs
index 8fb7ad81..51a6e135 100644
--- a/platform/winrt/gsview/gsprint.cs
+++ b/platform/winrt/gsview/gsprint.cs
@@ -48,6 +48,17 @@ namespace gsview
 		private XpsDocumentWriter m_docWriter = null;
 		internal delegate void AsyncPrintCallBack(object printObject, gsPrintEventArgs info);
 		internal event AsyncPrintCallBack PrintUpdate;
+		private bool m_busy;
+
+		public bool IsBusy()
+		{
+			return m_busy;
+		}
+
+		public gsprint()
+		{
+			m_busy = false;
+		}
 
 		/* Show std. print dialog */
 		public PrintDialog GetPrintDialog()
@@ -58,6 +69,7 @@ namespace gsview
 			//dlg.UserPageRangeEnabled = true;
 			//dlg.CurrentPageEnabled = true;
 			dlg.SelectedPagesEnabled = false;
+			m_busy = false;
 			if (dlg.ShowDialog() == true)
 				return dlg;
 			return null;
@@ -67,7 +79,8 @@ namespace gsview
 		public void Print(PrintQueue queu, FixedDocumentSequence fixdoc)
 		{
 			XpsDocumentWriter docwrite = GetDocWriter(queu);
-			
+
+			m_busy = true;
 			docwrite.WritingPrintTicketRequired +=
 				new WritingPrintTicketRequiredEventHandler(PrintTicket);
 			PrintPages(docwrite, fixdoc);
@@ -95,6 +108,7 @@ namespace gsview
 		private void AsyncCompleted(object sender, WritingCompletedEventArgs e)
 		{
 			string status = null;
+
 			if (e.Cancelled)
 				status = "Print Canceled";
 			else if (e.Error != null)
@@ -107,6 +121,7 @@ namespace gsview
 				gsPrintEventArgs info = new gsPrintEventArgs(status, true, 0);
 				PrintUpdate(this, info);
 			}
+			m_busy = false;
 		}
 
 		/* Do this update with each fixed document (page) that is handled */
-- 
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