Wpf/Mac control printing fixes

src/Eto.Mac/Forms/Controls/ButtonHandler.cs

@@ -70,6 +70,8 @@ public Color? Color
 
 		public override void DrawBezelWithFrame(CGRect frame, NSView controlView)
 		{
+			if (!NSGraphicsContext.IsCurrentContextDrawingToScreen)
+				return;
 			colorize?.Begin(frame, controlView);
 			base.DrawBezelWithFrame(frame, controlView);
 			colorize?.End();

src/Eto.Mac/Forms/Controls/CheckBoxHandler.cs

@@ -114,6 +114,29 @@ protected override nfloat GetDefaultHeight()
 						return 10;
 				}
 			}
+
+			public override void DrawWithFrame(CGRect cellFrame, NSView inView)
+			{
+				if (NSGraphicsContext.IsCurrentContextDrawingToScreen)
+				{
+					base.DrawWithFrame(cellFrame, inView);
+				}
+				else
+				{
+					DrawTitle(AttributedTitle, TitleRectForBounds(cellFrame), inView);
+					var state = State;
+					var text = state == NSCellStateValue.On ? "☑" : state == NSCellStateValue.Mixed ? "-" : "☐";
+					var font = NSFont.SystemFontOfSize(NSFont.SystemFontSizeForControlSize(ControlSize));
+					var attributes = NSDictionary.FromObjectAndKey(font, NSStringAttributeKey.Font);
+					var str = new NSAttributedString(text, attributes);
+					var frame = cellFrame;
+					var size = str.Size;
+					var offset = (nfloat)Math.Max(0, (frame.Height - size.Height) / 2);
+					frame.Y += offset;
+					frame.Height -= offset;
+					str.DrawString(frame);
+				}
+			}
 		}
 
 		public class EtoCheckBoxButton : NSButton, IMacControl

src/Eto.Mac/Forms/Controls/DropDownHandler.cs

@@ -90,9 +90,12 @@ public Color? TextColor
 
 			public override void DrawBezelWithFrame(CGRect frame, NSView controlView)
 			{
-				colorize?.Begin(frame, controlView);
-				base.DrawBezelWithFrame(frame, controlView);
-				colorize?.End();
+				if (NSGraphicsContext.IsCurrentContextDrawingToScreen)
+				{
+					colorize?.Begin(frame, controlView);
+					base.DrawBezelWithFrame(frame, controlView);
+					colorize?.End();
+				}
 			}
 
 			public override CGRect DrawTitle(NSAttributedString title, CGRect frame, NSView controlView)

src/Eto.Mac/Forms/Controls/RadioButtonHandler.cs

@@ -89,6 +89,29 @@ protected override nfloat GetDefaultHeight()
 						return 10;
 				}
 			}
+
+			public override void DrawWithFrame(CGRect cellFrame, NSView inView)
+			{
+				if (NSGraphicsContext.IsCurrentContextDrawingToScreen)
+				{
+					base.DrawWithFrame(cellFrame, inView);
+				}
+				else
+				{
+					DrawTitle(AttributedTitle, TitleRectForBounds(cellFrame), inView);
+					var state = State;
+					var text = state == NSCellStateValue.On ? "⦿" : state == NSCellStateValue.Mixed ? "⊖" : "○";
+					var font = NSFont.SystemFontOfSize(NSFont.SystemFontSizeForControlSize(ControlSize));
+					var attributes = NSDictionary.FromObjectAndKey(font, NSStringAttributeKey.Font);
+					var str = new NSAttributedString(text, attributes);
+					var frame = cellFrame;
+					var size = str.Size;
+					var offset = (nfloat)Math.Max(0, (frame.Height - size.Height) / 2);
+					frame.Y += offset;
+					frame.Height -= offset;
+					str.DrawString(frame);
+				}
+			}
 		}
 
 		public class EtoRadioButton : NSButton, IMacControl

src/Eto.Mac/Forms/Printing/PrintDialogHandler.cs

@@ -48,7 +48,7 @@ public DialogResult ShowDialog(Window parent)
 			}
 			else
 			{
-				var printInfo = settings.ToNS();
+				var printInfo = PrintSettings.ToNS();
 				if (parent != null)
 				{
 					var parentHandler = (IMacWindow)parent.Handler;
@@ -65,16 +65,8 @@ public DialogResult ShowDialog(Window parent)
 
 		public PrintSettings PrintSettings
 		{
-			get
-			{
-				if (settings == null)
-					settings = Control.PrintInfo.ToEto();
-				return settings;
-			}
-			set
-			{
-				settings = value;
-			}
+			get => settings ?? (settings = Control.PrintInfo.ToEto() ?? new PrintSettings());
+			set => settings = value;
 		}
 
 		public bool AllowCopies

src/Eto.Mac/Forms/Printing/PrintDocumentHandler.cs

@@ -126,11 +126,7 @@ public void PrintOperationDidRun(IntPtr printOperation, bool success, IntPtr con
 
 		public bool Print(bool showPanel, Window parent, NSPrintPanel panel)
 		{
-			var op = NSPrintOperation.FromView(Control);
-			if (printSettings != null)
-				op.PrintInfo = printSettings.ToNS();
-			else
-				PrintSettingsHandler.SetDefaults(op.PrintInfo);
+			var op = NSPrintOperation.FromView(Control, PrintSettings.ToNS());
 
 			(Control as PrintView)?.PrepareForPrint(op);
 
@@ -229,28 +225,40 @@ public override void PrepareForPrint(NSPrintOperation operation)
 				base.PrepareForPrint(operation);
 
 				var paperSize = operation.PrintInfo.ImageablePageBounds.Size;
-				var size = Frame.Size;
+				var size = _preferredSize.ToNS();
+
 				// todo: take into account if width > page size and multiply number of pages as needed.
+				var scale = (nfloat)Math.Min(1.0, paperSize.Width / size.Width);
 
-				_numPages = (int)Math.Ceiling(_preferredSize.Height / paperSize.Height);
+				operation.PrintInfo.ScalingFactor = scale;
 
-				size.Width = (nfloat)Math.Max(size.Width, paperSize.Width);
-				size.Height = (nfloat)Math.Max(size.Height, paperSize.Height);
+				_numPages = (int)Math.Ceiling(_preferredSize.Height / (paperSize.Height / scale));
 
+				size.Width = (nfloat)(Math.Max(size.Width, paperSize.Width / scale));
+				size.Height = (nfloat)(Math.Max(size.Height, paperSize.Height / scale * _numPages));
 				SetFrameSize(size);
 				UpdateConstraintsForSubtreeIfNeeded();
+				LayoutSubtreeIfNeeded();
+
+				// scale to fit
+				if (scale < 1)
+					ScaleUnitSquareToSize(new CGSize(scale, scale));
+
 			}
 
 			public override CGRect RectForPage(nint pageNumber)
 			{
 				var operation = NSPrintOperation.CurrentOperation;
 				var paperSize = operation.PrintInfo.ImageablePageBounds.Size;
-				var size = Frame.Size;
-				size.Width = (nfloat)Math.Min(size.Width, paperSize.Width);
-				size.Height = (nfloat)Math.Min(size.Height, paperSize.Height);
-				var location = new CGPoint(0, 0);
-				location.Y = (nfloat)Math.Max(0, _preferredSize.Height - paperSize.Height * pageNumber);
-				return new CGRect(location, size);
+				var frame = Frame;
+				var scale = operation.PrintInfo.ScalingFactor;
+
+				var rect = new CGRect();
+				rect.Y = (nfloat)Math.Max(0, frame.Height - (paperSize.Height * pageNumber / scale));
+				rect.Width = (nfloat)(Math.Min(frame.Width, paperSize.Width / scale));
+				rect.Height = (nfloat)(Math.Min(frame.Height, paperSize.Height / scale));
+
+				return rect;
 			}
 
 			public override bool KnowsPageRange(ref NSRange aRange)

src/Eto.WinForms/Forms/CursorHandler.cs

@@ -126,7 +126,7 @@ public void Create(Stream stream)
 		{
 			// using Cursor constructor doesn't support 32-bit cursors
 			// so we save to a temp file and use LoadCursorFromFile.
-			var tmp = Path.GetTempFileName();
+			var tmp = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString()); //Path.GetTempFileName();
 			try
 			{
 				using (var tmpStream = File.Create(tmp))

src/Eto.Wpf/Forms/Controls/WebView2Handler.cs

@@ -207,7 +207,7 @@ void Progress(double progress)
 				reportProgress?.Invoke(info);
 			}
 			// download bootstrapper to temp folder
-			var tempFile = Path.GetTempFileName() + ".exe";
+			var tempFile = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString()) + ".exe";
 			try
 			{
 				info.Text = Loc("Downloading bootstrapper...");

src/Eto.Wpf/Forms/EnableThemingInScope.cs

@@ -76,7 +76,7 @@ bool EnsureActivateContextCreated()
 					return contextCreationSucceeded.Value;
 
 				// Use a custom manifest from resources and write it to a temp file
-				var manifestLoc = Path.GetTempFileName();
+				var manifestLoc = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
 				try
 				{
 					var stream = typeof(EnableThemingInScope).Assembly.GetManifestResourceStream("Eto.Wpf.XPThemes.manifest");