addons/Cairo/source/IoCairoFontExtents.c

   1 /*#io
   2 Cairo ioDoc(
   3                     docCopyright("Trevor Fancher", 2007)
   4                     docLicense("BSD revised")
   5                     docObject("Cairo")
   6                     docDescription("Cairo is a 2D graphics library. http://cairographics.org/")
   7                     docCategory("Graphics")
   8                     */
   9
  10 #include "IoCairoFontExtents.h"
  11 #include "IoNumber.h"
  12
  13 #define DATA(self) ((IoCairoFontExtentsData *)IoObject_dataPointer(self))
  14 #define FONTEXTENTS(ctx) (DATA(ctx))
  15
  16 IoTag *IoCairoFontExtents_newTag(void *state)
  17 {
  18         IoTag *tag = IoTag_newWithName_("CairoFontExtents");
  19         IoTag_state_(tag, state);
  20         IoTag_cloneFunc_(tag, (IoTagCloneFunc *)IoCairoFontExtents_rawClone);
  21         IoTag_freeFunc_(tag, (IoTagFreeFunc *)IoCairoFontExtents_free);
  22         IoTag_markFunc_(tag, (IoTagMarkFunc *)IoCairoFontExtents_mark);
  23         return tag;
  24 }
  25
  26 IoCairoFontExtents *IoCairoFontExtents_proto(void *state)
  27 {
  28         IoObject *self = IoObject_new(state);
  29         IoObject_tag_(self, IoCairoFontExtents_newTag(state));
  30
  31         IoObject_setDataPointer_(self, calloc(1, sizeof(IoCairoFontExtentsData)));
  32
  33         IoState_registerProtoWithFunc_(state, self, IoCairoFontExtents_proto);
  34
  35         {
  36                 IoMethodTable methodTable[] = {
  37                         {"ascent", IoCairoFontExtents_ascent},
  38                         {"descent", IoCairoFontExtents_descent},
  39                         {"height", IoCairoFontExtents_height},
  40                         {"maxXAdvance", IoCairoFontExtents_maxXAdvance},
  41                         {"maxYAdvance", IoCairoFontExtents_maxYAdvance},
  42                         {NULL, NULL},
  43                 };
  44                 IoObject_addMethodTable_(self, methodTable);
  45         }
  46         return self;
  47 }
  48
  49 IoCairoFontExtents *IoCairoFontExtents_rawClone(IoCairoFontExtents *proto)
  50 {
  51         IoObject *self = IoObject_rawClonePrimitive(proto);
  52         IoObject_setDataPointer_(self, cpalloc(IoObject_dataPointer(proto), sizeof(IoCairoFontExtentsData)));
  53         return self;
  54 }
  55
  56 IoCairoFontExtents *IoCairoFontExtents_newWithRawFontExtents(void *state, cairo_font_extents_t *te)
  57 {
  58         IoObject *proto = IoState_protoWithInitFunction_(state, IoCairoFontExtents_proto);
  59         IoObject *self = IoObject_rawClonePrimitive(proto);
  60         IoObject_setDataPointer_(self, cpalloc(te, sizeof(IoCairoFontExtentsData)));
  61         return self;
  62 }
  63
  64 /* ----------------------------------------------------------- */
  65
  66 void IoCairoFontExtents_free(IoCairoFontExtents *self)
  67 {
  68         free(IoObject_dataPointer(self));
  69 }
  70
  71 void IoCairoFontExtents_mark(IoCairoFontExtents *self)
  72 {
  73 }
  74
  75 cairo_font_extents_t *IoCairoFontExtents_getRawFontExtents(IoCairoFontExtents *self)
  76 {
  77         return FONTEXTENTS(self);
  78 }
  79
  80 /* ----------------------------------------------------------- */
  81
  82 #define IoCairoFontExtents_make_get_func(funName, dataName) \
  83         IoObject *IoCairoFontExtents_ ## funName (IoCairoFontExtents *self, IoObject *locals, IoMessage *m) \
  84         { \
  85                 return IONUMBER(DATA(self)->dataName); \
  86         }
  87
  88 IoCairoFontExtents_make_get_func(ascent, ascent)
  89 IoCairoFontExtents_make_get_func(descent, descent)
  90 IoCairoFontExtents_make_get_func(height, height)
  91 IoCairoFontExtents_make_get_func(maxXAdvance, max_x_advance)
  92 IoCairoFontExtents_make_get_func(maxYAdvance, max_y_advance)
  93
  94 #undef IoCairoFontExtents_make_get_func