gdk/gdk.region.lisp

   1 (in-package :gdk)
   2
   3 (defcfun gdk-rectangle-intersect :boolean
   4   (src-1 (g-boxed-foreign rectangle))
   5   (src-2 (g-boxed-foreign rectangle))
   6   (dest (g-boxed-foreign rectangle)))
   7
   8 (defun rectangle-intersect (rectangle-1 rectangle-2)
   9   (let ((dest (make-rectangle)))
  10     (when (gdk-rectangle-intersect rectangle-1 rectangle-2 dest)
  11       dest)))
  12
  13 (export 'rectangle-intersect)
  14
  15 (defcfun gdk-rectangle-union :boolean
  16   (src-1 (g-boxed-foreign rectangle))
  17   (src-2 (g-boxed-foreign rectangle))
  18   (dest (g-boxed-foreign rectangle)))
  19
  20 (defun rectangle-union (rectangle-1 rectangle-2)
  21   (let ((dest (make-rectangle)))
  22     (when (gdk-rectangle-union rectangle-1 rectangle-2 dest)
  23       dest)))
  24
  25 (export 'rectangle-union)
  26
  27 (defcfun gdk-region-polygon (g-boxed-foreign region :return)
  28   (points :pointer)
  29   (n-points :int)
  30   (fill-rule gdk-fill-rule))
  31
  32 (defun region-from-polygon (points fill-rule)
  33   (with-foreign-boxed-array (n pts point points)
  34     (gdk-region-polygon pts n fill-rule)))
  35
  36 (export 'region-from-polygon)
  37
  38 (defcfun (region-from-rectangle "gdk_region_rectangle") (g-boxed-foreign region :return)
  39   (rectangle (g-boxed-foreign rectangle)))
  40
  41 (export 'region-from-rectangle)
  42
  43 (defcfun gdk-region-get-clipbox :void
  44   (region (g-boxed-foreign region))
  45   (rectangle (g-boxed-foreign rectangle)))
  46
  47 (defun region-get-clipbox (region)
  48   (let ((clipbox (make-rectangle)))
  49     (gdk-region-get-clipbox region clipbox)
  50     clipbox))
  51
  52 (export 'region-get-clipbox)
  53
  54 (defcfun gdk-region-get-rectangles :void
  55   (region (g-boxed-foreign region))
  56   (rectangles :pointer)
  57   (n-rectangles :pointer))
  58
  59 (defun region-get-rectangles (region)
  60   (with-foreign-objects ((rectangles-ptr :pointer) (n-rectangles-ptr :int))
  61     (gdk-region-get-rectangles region rectangles-ptr n-rectangles-ptr)
  62     (let ((n (mem-ref n-rectangles-ptr :int))
  63           (rectangles (mem-ref rectangles-ptr :pointer)))
  64       (prog1
  65           (iter (for i from 0 below n)
  66                 (for rect = (convert-from-foreign (inc-pointer rectangles (* i (foreign-type-size 'rectangle-cstruct)))
  67                                                   '(g-boxed-foreign rectangle)))
  68                 (collect rect))
  69         (glib:g-free rectangles)))))
  70
  71 (export 'region-get-rectangles)
  72
  73 (defcfun (region-is-empty "gdk_region_empty") :boolean
  74   (region (g-boxed-foreign region)))
  75
  76 (export 'region-is-empty)
  77
  78 (defcfun (region= "gdk_region_equal") :boolean
  79   (region-1 (g-boxed-foreign region))
  80   (region-2 (g-boxed-foreign region)))
  81
  82 (export 'region=)
  83
  84 (defcfun (region-point-in "gdk_region_point_in") :boolean
  85   (region (g-boxed-foreign region))
  86   (x :int)
  87   (y :int))
  88
  89 (export 'region-point-in)
  90
  91 (defcfun (region-rect-in "gdk_region_rect_in") overlap-type
  92   (region (g-boxed-foreign region))
  93   (rectangle (g-boxed-foreign rectangle)))
  94
  95 (export 'region-rect-in)
  96
  97 (defcfun (region-offset "gdk_region_offset") :void
  98   (region (g-boxed-foreign region))
  99   (dx :int)
 100   (dy :int))
 101
 102 (export 'region-offset)
 103
 104 (defcfun (region-shrink "gdk_region_shrink") :void
 105   (region (g-boxed-foreign region))
 106   (dx :int)
 107   (dy :int))
 108
 109 (export 'region-shrink)
 110
 111 (defcfun (region-union-with-rect "gdk_region_union_with_rect") :void
 112   (region (g-boxed-foreign region))
 113   (rect (g-boxed-foreign rectangle)))
 114
 115 (export 'region-union-with-rect)
 116
 117 (defcfun (region-intersect "gdk_region_intersect") :void
 118   (target (g-boxed-foreign region))
 119   (source (g-boxed-foreign region)))
 120
 121 (export 'region-intersect)
 122
 123 (defcfun (region-union "gdk_region_union") :void
 124   (target (g-boxed-foreign region))
 125   (source (g-boxed-foreign region)))
 126
 127 (export 'region-union)
 128
 129 (defcfun (region-subtract "gdk_region_subtract") :void
 130   (target (g-boxed-foreign region))
 131   (source (g-boxed-foreign region)))
 132
 133 (export 'region-subtract)
 134
 135 (defcfun (region-xor "gdk_region_xor") :void
 136   (target (g-boxed-foreign region))
 137   (source (g-boxed-foreign region)))
 138
 139 (export 'region-xor)
 140
 141 (defcallback gdk-span-func-callback :void
 142     ((span (g-boxed-foreign span)) (data :pointer))
 143   (let ((fn (stable-pointer-value data)))
 144     (funcall fn span)))
 145
 146 (defcfun gdk-region-spans-intersect-foreach :void
 147   (region (g-boxed-foreign region))
 148   (spans :pointer)
 149   (n-spans :int)
 150   (sorted :boolean)
 151   (function :pointer)
 152   (data :pointer))
 153
 154 (defun region-spans-intersect-foreach (region spans sorted fn)
 155   (with-stable-pointer (ptr fn)
 156     (with-foreign-boxed-array (n spans-ptr span spans)
 157       (gdk-region-spans-intersect-foreach region spans-ptr n sorted (callback gdk-region-spans-intersect-foreach) ptr))))
 158
 159 (export 'region-spans-intersect-foreach)