Added font features (FontMap, et.al.) to Pango

demos/FreeTypeDemo/Program.cs

@@ -150,9 +150,15 @@ static void Core(string fileName, string[] fontNames, Func<string, FreeTypeFont>
     {
         yield return (DefaultFonts.SansSerif          , "Helvetica");
         yield return (DefaultFonts.SansSerifBold      , "Helvetica (bold)");
+        yield return (DefaultFonts.SansSerifItalic    , "Helvetica (italic)");
         yield return (DefaultFonts.SansSerifBoldItalic, "Helvetica (bold, italic)");
+        yield return (DefaultFonts.Serif              , "DejaVu Serif");
+        yield return (DefaultFonts.SerifBold          , "DejaVu Serif (bold)");
+        yield return (DefaultFonts.SerifItalic        , "DejaVu Serif (italic)");
+        yield return (DefaultFonts.SerifBoldItalic    , "DejaVu Serif (bold, italic)");
         yield return (DefaultFonts.MonoSpace          , "Source Code Pro (monospace)");
         yield return (DefaultFonts.MonoSpaceBold      , "Source Code Pro (monospace, bold)");
+        yield return (DefaultFonts.MonoSpaceItalic    , "Source Code Pro (monospace, italic)");
         yield return (DefaultFonts.MonoSpaceBoldItalic, "Source Code Pro (monospace, bold, italic)");
     }
 }

demos/PangoDemo/PangoDemo.csproj

@@ -8,4 +8,8 @@
         <ProjectReference Include="..\..\source\CairoSharp.Extensions\CairoSharp.Extensions.csproj" />
     </ItemGroup>
 
+    <ItemGroup>
+        <Content Include="..\FreeTypeDemo\fonts\SanRemo.ttf" Link="fonts\SanRemo.ttf" CopyToOutputDirectory="PreserveNewest" />
+    </ItemGroup>
+
 </Project>

demos/PangoDemo/Program.cs

@@ -8,6 +8,7 @@
 using Cairo.Extensions.Pango;
 using Cairo.Fonts;
 using Cairo.Surfaces.PDF;
+using Cairo.Surfaces.Recording;
 using Cairo.Surfaces.SVG;
 using Cairo.Surfaces.Tee;
 using IOPath = System.IO.Path;
@@ -21,6 +22,7 @@
             PangoNative.LibPangoName      => IOPath.Combine(@"C:\Program Files\msys64\ucrt64\bin", "libpango-1.0-0.dll"),
             PangoNative.LibPangoCairoName => IOPath.Combine(@"C:\Program Files\msys64\ucrt64\bin", "libpangocairo-1.0-0.dll"),
             PangoNative.LibGObjectName    => IOPath.Combine(@"C:\Program Files\msys64\ucrt64\bin", "libgobject-2.0-0.dll"),
+            PangoNative.LibGLibName       => IOPath.Combine(@"C:\Program Files\msys64\ucrt64\bin", "libglib-2.0-0.dll"),
             _                             => null
         };
 
@@ -37,11 +39,15 @@
 Directory.CreateDirectory("output");
 Environment.CurrentDirectory = IOPath.Combine(Environment.CurrentDirectory, "output");
 
-DemoComparisonWithCairoText();
-DemoFromPangoDocsWithTextAroundCircle();
-DemoPangoFeatures();
+ComparisonWithCairoTextDemo();
+FontSelectionDemo();
+PangoDocsDemoWithTextAroundCircle();
+PangoFeaturesDemo();
+FontMapDemo();
+RecordingSurfaceDemo();
+FontListDemo();
 //-----------------------------------------------------------------------------
-static void DemoComparisonWithCairoText()
+static void ComparisonWithCairoTextDemo()
 {
     const int Width   = 600;
     const int Height  = 150;
@@ -103,7 +109,60 @@ static void DemoComparisonWithCairoText()
     tee.WriteToPng("cairo_comparison.png");
 }
 //-----------------------------------------------------------------------------
-static void DemoFromPangoDocsWithTextAroundCircle()
+static void FontSelectionDemo()
+{
+    const int Width   = 800;
+    const int Height  = 100;
+    const string Text = "Hello from CairoSharp, w/o any AV and VA";
+
+    using SvgSurface svg  = new("font-selection.svg", Width, Height);
+    using PdfSurface pdf  = new("font-selection.pdf", Width, Height);
+    using TeeSurface tee  = new(svg);
+    using CairoContext cr = new(tee);
+    tee.Add(pdf);
+
+    cr.Color = KnownColors.White;
+    cr.Paint();
+    cr.LineWidth = 6;
+    cr.Color     = Color.Default;
+    cr.Rectangle(0, 0, Width, Height);
+    cr.Stroke();
+    cr.LineWidth = 1;
+
+    double curY = 10;
+    using PangoLayout pangoLayout = new(cr);
+
+    cr.MoveTo(10, curY);
+    pangoLayout.SetText($"{Text} (Pango font from string)");
+    string? fontDescriptionAsString = pangoLayout.SetFontDescriptionFromString("DejaVu Serif, Normal 22");
+    Console.WriteLine(fontDescriptionAsString);
+    pangoLayout.ShowLayout();
+    pangoLayout.GetSize(out double width, out double height);
+
+    curY += height;
+    cr.MoveTo(10, curY);
+    using PangoFontMap fontMap       = PangoFontMap.CairoFontMapGetDefault();
+    using PangoFontFamily fontFamily = fontMap.GetFamily("DejaVu Serif");
+    using PangoFontFace? fontFace    = fontFamily.GetFace(null);
+    Debug.Assert(fontFace is not null);
+    pangoLayout.SetText($"{Text} (Pango font selected)");
+    fontDescriptionAsString = pangoLayout.SetFontDescription(fontFace, size: 22);
+    Console.WriteLine(fontDescriptionAsString);
+    pangoLayout.ShowLayout();
+    pangoLayout.GetSize(out width, out height);
+    curY += height;
+
+    cr.SelectFontFace("DejaVu Serif");
+    cr.SetFontSize(22);
+    cr.FontExtents(out FontExtents fontExtents);
+    curY += fontExtents.Ascent;
+    cr.MoveTo(10, curY);
+    cr.ShowText($"{Text} (cairo)");
+
+    tee.WriteToPng("font-selection.png");
+}
+//-----------------------------------------------------------------------------
+static void PangoDocsDemoWithTextAroundCircle()
 {
     // Demo from https://docs.gtk.org/PangoCairo/pango_cairo.html
 
@@ -161,7 +220,7 @@ static void DemoFromPangoDocsWithTextAroundCircle()
     tee.WriteToPng("sample_from_docs.png");
 }
 //-----------------------------------------------------------------------------
-static void DemoPangoFeatures()
+static void PangoFeaturesDemo()
 {
     const int Width  = 600;
     const int Height = 620;
@@ -278,7 +337,7 @@ static void DemoPangoFeatures()
         {
             cr.Color = KnownColors.DeepSkyBlue;
             cr.MoveTo(10, curY);
-            pangoLayout.SetText("Another long text, to showcase how justify works. And as we get on at least one more line, we can test next how JustifyLastLine works.");
+            pangoLayout.SetMarkup("Another long text, to showcase how <tt>Justify</tt> works. And as we get on at least one more line, we can test next how <tt>JustifyLastLine</tt> works."u8);
             pangoLayout.ShowLayout();
 
             pangoLayout.GetSize(out width, out height);
@@ -347,3 +406,210 @@ static void DemoPangoFeatures()
 
     tee.WriteToPng("features.png");
 }
+//-----------------------------------------------------------------------------
+static void FontMapDemo()
+{
+    Console.WriteLine();
+    using StreamWriter sw = File.CreateText("font-families.csv");
+    sw.WriteLine("Name;IsMonospace;IsVariable");
+
+    using PangoFontMap fontMap = PangoFontMap.CairoFontMapGetDefault();
+    fontMap.AddFontFile(IOPath.Combine(AppContext.BaseDirectory, "fonts", "SanRemo.ttf"));
+
+    List<PangoFontFamily> families = [];
+    foreach (PangoFontFamily fontFamily in fontMap.ListFamilies())
+    {
+        families.Add(fontFamily);
+    }
+
+    string fontFamilyName = "";
+    foreach (PangoFontFamily fontFamily in families.OrderBy(f => f.Name))
+    {
+        fontFamilyName = fontFamily.Name;
+
+        sw.WriteLine($"{fontFamilyName};{fontFamily.IsMonospace};{fontFamily.IsVariable}");
+        Console.WriteLine(fontFamily);
+        Console.WriteLine("Faces:");
+
+        foreach (PangoFontFace fontFace in fontFamily.ListFaces())
+        {
+            Console.WriteLine($"\t{fontFace.Name}\tsynthesized: {fontFace.IsSynthesized}");
+            Console.WriteLine("\tSizes:");
+
+            foreach (double size in fontFace.ListSizes())
+            {
+                Console.WriteLine($"\t\t{size}");
+            }
+        }
+
+        Console.WriteLine();
+    }
+
+    const int Width  = 600;
+    const int Height = 120;
+
+    using SvgSurface svg  = new("font-map.svg", Width, Height);
+    using PdfSurface pdf  = new("font-map.pdf", Width, Height);
+    using TeeSurface tee  = new(svg);
+    using CairoContext cr = new(tee);
+    tee.Add(pdf);
+
+    using PangoLayout pangoLayout = new(cr);
+    double curY                   = 10;
+
+    cr.MoveTo(10, curY);
+    pangoLayout.SetFontDescriptionFromString($"{fontFamilyName} Normal 22");
+    pangoLayout.SetText($"Font: {fontFamilyName}");
+    pangoLayout.ShowLayout();
+    pangoLayout.GetSize(out double width, out double height);
+    curY += height;
+
+    cr.MoveTo(10, curY);
+    pangoLayout.SetFontDescriptionFromString("Viner Hand ITC, Normal 22");
+    pangoLayout.SetText("Font: Viner Hand ITC");
+    pangoLayout.ShowLayout();
+    pangoLayout.GetSize(out width, out height);
+    curY += height;
+
+    cr.MoveTo(10, curY);
+    pangoLayout.SetFontDescriptionFromString("San Remo, Normal 22");
+    pangoLayout.SetText("Font: San Remo");
+    pangoLayout.ShowLayout();
+    pangoLayout.GetSize(out width, out height);
+    curY += height;
+
+    tee.WriteToPng("font-map.png");
+
+    families.ForEach(f => f.Dispose());
+}
+//-----------------------------------------------------------------------------
+static void RecordingSurfaceDemo()
+{
+    using PangoFontMap fontMap = PangoFontMap.CairoFontMapGetDefault();
+    fontMap.AddFontFile(IOPath.Combine(AppContext.BaseDirectory, "fonts", "SanRemo.ttf"));
+
+    List<PangoFontFamily> families = [];
+    foreach (PangoFontFamily fontFamily in fontMap.ListFamilies())
+    {
+        families.Add(fontFamily);
+    }
+
+    string fontFamilyName = "";
+    foreach (PangoFontFamily fontFamily in families.OrderBy(f => f.Name))
+    {
+        fontFamilyName = fontFamily.Name;
+    }
+
+    using RecordingSurface surface = new();
+    using (CairoContext cr         = new(surface))
+    {
+        using PangoLayout pangoLayout = new(cr);
+        double curY                   = 10;
+
+        cr.MoveTo(10, curY);
+        pangoLayout.SetFontDescriptionFromString($"{fontFamilyName} Normal 22");
+        pangoLayout.SetText($"Font: {fontFamilyName}");
+        pangoLayout.ShowLayout();
+        pangoLayout.GetSize(out double width, out double height);
+        curY += height;
+
+        cr.MoveTo(10, curY);
+        pangoLayout.SetFontDescriptionFromString("Viner Hand ITC, Normal 22");
+        pangoLayout.SetText("Font: Viner Hand ITC");
+        pangoLayout.ShowLayout();
+        pangoLayout.GetSize(out width, out height);
+        curY += height;
+
+        cr.MoveTo(10, curY);
+        pangoLayout.SetFontDescriptionFromString("San Remo, Normal 22");
+        pangoLayout.SetText("Font: San Remo");
+        pangoLayout.ShowLayout();
+        pangoLayout.GetSize(out width, out height);
+        curY += height;
+    }
+
+    Rectangle recordingExtents = surface.GetInkExtents();
+    const int Padding          = 10;
+
+    using SvgSurface svg   = new("recording.svg", recordingExtents.Width + 2 * Padding, recordingExtents.Height + 2 * Padding);
+    using PdfSurface pdf   = new("recording.pdf", recordingExtents.Width + 2 * Padding, recordingExtents.Height + 2 * Padding);
+    using TeeSurface tee   = new(svg);
+    using (CairoContext cr = new(tee))
+    {
+        tee.Add(pdf);
+
+        cr.SetSourceSurface(surface, Padding - recordingExtents.X, Padding - recordingExtents.Y);
+        cr.Paint();
+    }
+
+    tee.WriteToPng("recording.png");
+
+    families.ForEach(f => f.Dispose());
+}
+//-----------------------------------------------------------------------------
+static void FontListDemo()
+{
+    using PangoFontMap fontMap = PangoFontMap.CairoFontMapGetDefault();
+    fontMap.AddFontFile(IOPath.Combine(AppContext.BaseDirectory, "fonts", "SanRemo.ttf"));
+
+    List<PangoFontFamily> families = [];
+    foreach (PangoFontFamily fontFamily in fontMap.ListFamilies())
+    {
+        families.Add(fontFamily);
+    }
+    families = [.. families
+        .OrderBy(f => f.IsMonospace)
+        .ThenBy (f => f.Name)
+    ];
+
+    using RecordingSurface surface = new();
+    using (CairoContext cr         = new(surface))
+    {
+        using PangoLayout pangoLayout = new(cr);
+        double curY                   = 10;
+
+        foreach (PangoFontFamily fontFamily in families)
+        {
+            using PangoFontFace? fontFace = fontFamily.GetFace(null);
+
+            if (fontFace is null)
+            {
+                continue;
+            }
+
+            cr.MoveTo(10, curY);
+            pangoLayout.SetText($"Font: {fontFamily.Name} {fontFace.Name}; AV and VA to see kerning or not");
+            pangoLayout.SetFontDescription(fontFace, size: 22);
+            pangoLayout.ShowLayout();
+            pangoLayout.GetSize(out double width, out double height);
+            curY += height;
+        }
+    }
+
+    Rectangle recordingExtents = surface.GetInkExtents();
+    const int Padding          = 10;
+    double surfaceWidth        = recordingExtents.Width  + 2 * Padding;
+    double surfaceHeight       = recordingExtents.Height + 2 * Padding;
+
+    using SvgSurface svg   = new("font-list.svg", surfaceWidth, surfaceHeight);
+    using PdfSurface pdf   = new("font-list.pdf", surfaceWidth, surfaceHeight);
+    using TeeSurface tee   = new(svg);
+    using (CairoContext cr = new(tee))
+    {
+        tee.Add(pdf);
+
+        cr.Color = KnownColors.White;
+        cr.Paint();
+        cr.Color = Color.Default;
+        cr.LineWidth = 4;
+        cr.Rectangle(0, 0, surfaceWidth, surfaceHeight);
+        cr.Stroke();
+
+        cr.SetSourceSurface(surface, Padding - recordingExtents.X, Padding - recordingExtents.Y);
+        cr.Paint();
+    }
+
+    tee.WriteToPng("font-list.png");
+
+    families.ForEach(f => f.Dispose());
+}