class/Mono.Cairo/Mono.Cairo/ScaledFont.cs

   1 //
   2 // Mono.Cairo.ScaledFont.cs
   3 //
   4 // (c) 2008 Jordi Mas i Hernandez (jordimash@gmail.com)
   5 //
   6 // Permission is hereby granted, free of charge, to any person obtaining
   7 // a copy of this software and associated documentation files (the
   8 // "Software"), to deal in the Software without restriction, including
   9 // without limitation the rights to use, copy, modify, merge, publish,
  10 // distribute, sublicense, and/or sell copies of the Software, and to
  11 // permit persons to whom the Software is furnished to do so, subject to
  12 // the following conditions:
  13 //
  14 // The above copyright notice and this permission notice shall be
  15 // included in all copies or substantial portions of the Software.
  16 //
  17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  21 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24 //
  25
  26 using System;
  27 using System.Runtime.InteropServices;
  28
  29 namespace Cairo {
  30
  31         public class ScaledFont : IDisposable
  32         {
  33                 protected IntPtr handle = IntPtr.Zero;
  34
  35                 internal ScaledFont (IntPtr handle)
  36                 {
  37                         this.handle = handle;
  38                 }
  39
  40                 public ScaledFont (FontFace fontFace, Matrix matrix, Matrix ctm, FontOptions options)
  41                 {
  42                         handle = NativeMethods.cairo_scaled_font_create (fontFace.Handle, matrix, ctm, options.Handle);
  43                 }
  44
  45                 ~ScaledFont ()
  46                 {
  47                         Dispose (false);
  48                 }
  49
  50                 public IntPtr Handle {
  51                         get {
  52                                 return handle;
  53                         }
  54                 }
  55
  56                 public FontExtents FontExtents {
  57                         get {
  58                                 FontExtents extents;
  59                                 NativeMethods.cairo_scaled_font_extents (handle, out extents);
  60                                 return extents;
  61                         }
  62                 }
  63
  64                 public Matrix FontMatrix {
  65                         get {
  66                                 Matrix m;
  67                                 NativeMethods.cairo_scaled_font_get_font_matrix (handle, out m);
  68                                 return m;
  69                         }
  70                 }
  71
  72                 public FontType FontType {
  73                         get {
  74                                 return NativeMethods.cairo_scaled_font_get_type (handle);
  75                         }
  76                 }
  77
  78                 public TextExtents GlyphExtents (Glyph[] glyphs)
  79                 {
  80                         IntPtr ptr = Context.FromGlyphToUnManagedMemory (glyphs);
  81                         TextExtents extents;
  82
  83                         NativeMethods.cairo_scaled_font_glyph_extents (handle, ptr, glyphs.Length, out extents);
  84
  85                         Marshal.FreeHGlobal (ptr);
  86                         return extents;
  87                 }
  88
  89                 public Status Status
  90                 {
  91                         get { return NativeMethods.cairo_scaled_font_status (handle); }
  92                 }
  93
  94                 public void Dispose ()
  95                 {
  96                         Dispose (true);
  97                         GC.SuppressFinalize (this);
  98                 }
  99
 100                 protected virtual void Dispose (bool disposing)
 101                 {
 102                         if (disposing) {
 103                                 NativeMethods.cairo_scaled_font_destroy (handle);
 104                                 handle = IntPtr.Zero;
 105                         }
 106                 }
 107
 108                 protected void Reference ()
 109                 {
 110                         NativeMethods.cairo_scaled_font_reference (handle);
 111                 }
 112         }
 113 }
 114