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, bool owner)
  36                 {
  37                         this.handle = handle;
  38                         if (!owner)
  39                                 NativeMethods.cairo_scaled_font_reference (handle);
  40                         if (CairoDebug.Enabled)
  41                                 CairoDebug.OnAllocated (handle);
  42                 }
  43
  44                 public ScaledFont (FontFace fontFace, Matrix matrix, Matrix ctm, FontOptions options)
  45                         : this (NativeMethods.cairo_scaled_font_create (fontFace.Handle, matrix, ctm, options.Handle), true)
  46                 {
  47                 }
  48
  49                 ~ScaledFont ()
  50                 {
  51                         Dispose (false);
  52                 }
  53
  54                 public IntPtr Handle {
  55                         get {
  56                                 return handle;
  57                         }
  58                 }
  59
  60                 public FontExtents FontExtents {
  61                         get {
  62                                 FontExtents extents;
  63                                 NativeMethods.cairo_scaled_font_extents (handle, out extents);
  64                                 return extents;
  65                         }
  66                 }
  67
  68                 public Matrix FontMatrix {
  69                         get {
  70                                 Matrix m;
  71                                 NativeMethods.cairo_scaled_font_get_font_matrix (handle, out m);
  72                                 return m;
  73                         }
  74                 }
  75
  76                 public FontType FontType {
  77                         get {
  78                                 return NativeMethods.cairo_scaled_font_get_type (handle);
  79                         }
  80                 }
  81
  82                 public TextExtents GlyphExtents (Glyph[] glyphs)
  83                 {
  84                         IntPtr ptr = Context.FromGlyphToUnManagedMemory (glyphs);
  85                         TextExtents extents;
  86
  87                         NativeMethods.cairo_scaled_font_glyph_extents (handle, ptr, glyphs.Length, out extents);
  88
  89                         Marshal.FreeHGlobal (ptr);
  90                         return extents;
  91                 }
  92
  93                 public Status Status
  94                 {
  95                         get { return NativeMethods.cairo_scaled_font_status (handle); }
  96                 }
  97
  98                 public void Dispose ()
  99                 {
 100                         Dispose (true);
 101                         GC.SuppressFinalize (this);
 102                 }
 103
 104                 protected virtual void Dispose (bool disposing)
 105                 {
 106                         if (!disposing || CairoDebug.Enabled)
 107                                 CairoDebug.OnDisposed<ScaledFont> (handle, disposing);
 108
 109                         if (!disposing|| handle == IntPtr.Zero)
 110                                 return;
 111
 112                         NativeMethods.cairo_scaled_font_destroy (handle);
 113                         handle = IntPtr.Zero;
 114                 }
 115
 116                 [Obsolete]
 117                 protected void Reference ()
 118                 {
 119                         NativeMethods.cairo_scaled_font_reference (handle);
 120                 }
 121         }
 122 }
 123