Merge pull request #259 from zii-dmg/PangoApis

Added/fixed some Pango APIs

Source/Libs/PangoSharp/Layout.cs

@@ -55,23 +55,20 @@ namespace Pango {
 			accel_char = GLib.Marshaller.GUnicharToChar (ucs4_accel_char);
 		}
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		delegate void d_pango_layout_get_log_attrs(IntPtr raw, out IntPtr attrs, out int n_attrs);
+		delegate IntPtr d_pango_layout_get_log_attrs_readonly(IntPtr raw, out int n_attrs);
-		static d_pango_layout_get_log_attrs pango_layout_get_log_attrs = FuncLoader.LoadFunction<d_pango_layout_get_log_attrs>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Pango), "pango_layout_get_log_attrs"));
+		static d_pango_layout_get_log_attrs_readonly pango_layout_get_log_attrs_readonly = FuncLoader.LoadFunction<d_pango_layout_get_log_attrs_readonly>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Pango), "pango_layout_get_log_attrs_readonly"));
 
 		public LogAttr [] LogAttrs {
 			get {
 				int count;
-				IntPtr array_ptr;
+				IntPtr array_ptr = pango_layout_get_log_attrs_readonly (Handle, out count);
-				pango_layout_get_log_attrs (Handle, out array_ptr, out count);
+				if (array_ptr == IntPtr.Zero || count == 0)
-				if (array_ptr == IntPtr.Zero)
 					return new LogAttr [0];
-				LogAttr [] result = new LogAttr [count];
+				LogAttr[] result = new LogAttr [count];
-				for (int i = 0; i < count; i++) {
+				int[] array = new int [count];
-					IntPtr fam_ptr = Marshal.ReadIntPtr (array_ptr, i * IntPtr.Size);
+				Marshal.Copy(array_ptr, array, 0, count);
-					result [i] = LogAttr.New (fam_ptr);
+				for (int i = 0; i < count; i++)
-				}
+					result[i] = new LogAttr ((uint)array[i]);
-
-				GLib.Marshaller.Free (array_ptr);
 				return result;
 			}
 		}
@@ -95,6 +92,36 @@ namespace Pango {
 			pango_layout_set_markup (Handle, native_markup, -1);
 			GLib.Marshaller.Free (native_markup);
 		}
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate int d_pango_layout_get_direction(IntPtr raw, int index);
+		static d_pango_layout_get_direction pango_layout_get_direction = FuncLoader.LoadFunction<d_pango_layout_get_direction>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Pango), "pango_layout_get_direction"));
+
+		public Pango.Direction GetDirection(int index)
+		{
+			int raw_ret = pango_layout_get_direction(Handle, index);
+			return (Pango.Direction)raw_ret;
+		}
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate float d_pango_layout_get_line_spacing(IntPtr raw);
+		static d_pango_layout_get_line_spacing pango_layout_get_line_spacing = FuncLoader.LoadFunction<d_pango_layout_get_line_spacing>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Pango), "pango_layout_get_line_spacing"));
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate void d_pango_layout_set_line_spacing(IntPtr raw, float factor);
+		static d_pango_layout_set_line_spacing pango_layout_set_line_spacing = FuncLoader.LoadFunction<d_pango_layout_set_line_spacing>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Pango), "pango_layout_set_line_spacing"));
+
+		public float LineSpacing
+		{
+			get
+			{
+				float raw_ret = pango_layout_get_line_spacing(Handle);
+				return raw_ret;
+			}
+			set
+			{
+				pango_layout_set_line_spacing(Handle, value);
+			}
+		}
 	}
 }
-

Source/Libs/PangoSharp/LayoutLine.cs

@@ -22,34 +22,37 @@
 namespace Pango {
 
 	using System;
+	using System.Runtime.InteropServices;
 
 	public partial class LayoutLine {
 
-#if NOT_BROKEN
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		delegate void d_pango_layout_line_get_x_ranges(IntPtr raw, int start_index, int end_index, out IntPtr ranges_handle, out int n_ranges);
 		static d_pango_layout_line_get_x_ranges pango_layout_line_get_x_ranges = FuncLoader.LoadFunction<d_pango_layout_line_get_x_ranges>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Pango), "pango_layout_line_get_x_ranges"));
-#endif
 
-		public void GetXRanges(int start_index, int end_index, out int[][] ranges)
+		public int[] GetXRanges(int start_index, int end_index)
 		{
-			// FIXME: this is broken
-			throw new NotImplementedException ();
-#if NOT_BROKEN
 			int count;
 			IntPtr array_ptr;
 			pango_layout_line_get_x_ranges(Handle, start_index, end_index, out array_ptr, out count);
-			ranges = new int[count] [];
+			int[] array = new int[count * 2];
-			for (int i = 0; i < count; i++) {
+			Marshal.Copy(array_ptr, array, 0, count * 2);
-				IntPtr tmp = new IntPtr (array_ptr + 2 * i * IntPtr.Size);
-				IntPtr rng_ptr = Marshal.ReadIntPtr (tmp);
-				IntPtr end_ptr = Marshal.ReadIntPtr (tmp, IntPtr.Size);
-
-			}
-			Marshal.Copy (array_ptr, ranges, 0, count);
 			GLib.Marshaller.Free (array_ptr);
-#endif
+			return array;
+		}
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		delegate void d_pango_layout_line_get_height(IntPtr raw, out int height);
+		static d_pango_layout_line_get_height pango_layout_line_get_height = FuncLoader.LoadFunction<d_pango_layout_line_get_height>(FuncLoader.GetProcAddress(GLibrary.Load(Library.Pango), "pango_layout_line_get_height"));
+
+		public int Height
+		{
+			get
+			{
+				int height;
+				pango_layout_line_get_height(Handle, out height);
+				return height;
+			}
 		}
 	}
 }
-

Source/Libs/PangoSharp/LogAttr.cs

@@ -0,0 +1,25 @@
+namespace Pango {
+
+	using System;
+
+	public partial struct LogAttr {
+
+		public LogAttr(uint bitfield) => _bitfield0 = bitfield;
+		public override string ToString() => Convert.ToString(_bitfield0 & 0x1FFF, 2).PadLeft(13, '0');
+
+		public uint Bitfield => _bitfield0;
+		public bool IsLineBreak => (_bitfield0 & (1 << 0)) != 0;
+		public bool IsMandatoryBreak => (_bitfield0 & (1 << 1)) != 0;
+		public bool IsCharBreak => (_bitfield0 & (1 << 2)) != 0;
+		public bool IsWhite => (_bitfield0 & (1 << 3)) != 0;
+		public bool IsCursorPosition => (_bitfield0 & (1 << 4)) != 0;
+		public bool IsWordStart => (_bitfield0 & (1 << 5)) != 0;
+		public bool IsWordEnd => (_bitfield0 & (1 << 6)) != 0;
+		public bool IsSentenceBoundary => (_bitfield0 & (1 << 7)) != 0;
+		public bool IsSentenceStart => (_bitfield0 & (1 << 8)) != 0;
+		public bool IsSentenceEnd => (_bitfield0 & (1 << 9)) != 0;
+		public bool BackspaceDeletesCharacter => (_bitfield0 & (1 << 10)) != 0;
+		public bool IsExpandableSpace => (_bitfield0 & (1 << 11)) != 0;
+		public bool IsWordBoundary => (_bitfield0 & (1 << 12)) != 0;
+	}
+}

Source/Libs/PangoSharp/PangoSharp.metadata

@@ -40,6 +40,9 @@
   <attr path="/api/namespace/class[@cname='PangoCairo_']/method[@name='ContextGetFontOptions']" name="hidden">1</attr>
   <attr path="/api/namespace/class[@cname='PangoCairo_']/method[@name='ContextSetFontOptions']" name="hidden">1</attr>
   <attr path="/api/namespace/class[@cname='PangoGlobal']/method[@name='ExtentsToPixels']/*/*[@type='PangoRectangle*']" name="pass_as">ref</attr>
+  <attr path="/api/namespace/class[@cname='PangoGlobal']/method[@name='ItemizeWithBaseDir']/return-type" name="element_type">PangoItem*</attr>
+  <attr path="/api/namespace/class[@cname='PangoGlobal']/method[@name='ItemizeWithBaseDir']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/class[@cname='PangoGlobal']/method[@name='ItemizeWithBaseDir']/return-type" name="elements_owned">true</attr>
   <attr path="/api/namespace/class[@cname='PangoGlobal']/method[@name='ParseMarkup']" name="hidden">1</attr>
   <attr path="/api/namespace/class[@cname='PangoGlobal']/method[@name='ReadLine']" name="hidden">1</attr>
   <attr path="/api/namespace/class[@cname='PangoGlobal']/method[@name='ReorderItems']" name="hidden">1</attr>
@@ -67,6 +70,7 @@
   <attr path="/api/namespace/object[@cname='PangoLayout']/method[@cname='pango_layout_get_lines_readonly']/return-type" name="element_type">PangoLayoutLine*</attr>
   <attr path="/api/namespace/object[@cname='PangoLayout']/method[@name='GetLinesReadonly']" name="name">GetLinesReadOnly</attr>
   <attr path="/api/namespace/object[@cname='PangoLayout']/method[@name='GetLogAttrs']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@cname='PangoLayout']/method[@name='GetLogAttrsReadonly']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@cname='PangoLayout']/method[@name='GetPixelExtents']/*/*[@type='PangoRectangle*']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='PangoLayout']/method[@name='GetPixelSize']/*/*[@type='int*']" name="pass_as">out</attr>
   <attr path="/api/namespace/object[@cname='PangoLayout']/method[@name='GetSize']/*/*[@type='int*']" name="pass_as">out</attr>