mcs/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                         if (CairoDebug.Enabled)
  39                                 CairoDebug.OnAllocated (handle);
  40                 }
  41
  42                 public ScaledFont (FontFace fontFace, Matrix matrix, Matrix ctm, FontOptions options)
  43                         : this (NativeMethods.cairo_scaled_font_create (fontFace.Handle, matrix, ctm, options.Handle))
  44                 {
  45                 }
  46
  47                 ~ScaledFont ()
  48                 {
  49                         Dispose (false);
  50                 }
  51
  52                 public IntPtr Handle {
  53                         get {
  54                                 return handle;
  55                         }
  56                 }
  57
  58                 public FontExtents FontExtents {
  59                         get {
  60                                 FontExtents extents;
  61                                 NativeMethods.cairo_scaled_font_extents (handle, out extents);
  62                                 return extents;
  63                         }
  64                 }
  65
  66                 public Matrix FontMatrix {
  67                         get {
  68                                 Matrix m;
  69                                 NativeMethods.cairo_scaled_font_get_font_matrix (handle, out m);
  70                                 return m;
  71                         }
  72                 }
  73
  74                 public FontType FontType {
  75                         get {
  76                                 return NativeMethods.cairo_scaled_font_get_type (handle);
  77                         }
  78                 }
  79
  80                 public TextExtents GlyphExtents (Glyph[] glyphs)
  81                 {
  82                         IntPtr ptr = Context.FromGlyphToUnManagedMemory (glyphs);
  83                         TextExtents extents;
  84
  85                         NativeMethods.cairo_scaled_font_glyph_extents (handle, ptr, glyphs.Length, out extents);
  86
  87                         Marshal.FreeHGlobal (ptr);
  88                         return extents;
  89                 }
  90
  91                 public Status Status
  92                 {
  93                         get { return NativeMethods.cairo_scaled_font_status (handle); }
  94                 }
  95
  96                 public void Dispose ()
  97                 {
  98                         Dispose (true);
  99                         GC.SuppressFinalize (this);
 100                 }
 101
 102                 protected virtual void Dispose (bool disposing)
 103                 {
 104                         if (!disposing || CairoDebug.Enabled)
 105                                 CairoDebug.OnDisposed<ScaledFont> (handle, disposing);
 106
 107                         if (!disposing|| handle == IntPtr.Zero)
 108                                 return;
 109
 110                         NativeMethods.cairo_scaled_font_destroy (handle);
 111                         handle = IntPtr.Zero;
 112                 }
 113
 114                 protected void Reference ()
 115                 {
 116                         NativeMethods.cairo_scaled_font_reference (handle);
 117                 }
 118         }
 119 }
 120