Pileus Git - ~andy/gtk/blob - gdk/gdkregion.h

   1 #ifndef __GDK_REGION_H__
   2 #define __GDK_REGION_H__
   3
   4 #include <gdk/gdktypes.h>
   5
   6 #ifdef __cplusplus
   7 extern "C" {
   8 #endif /* __cplusplus */
   9
  10 /* GC fill rule for polygons
  11  *  EvenOddRule
  12  *  WindingRule
  13  */
  14 typedef enum
  15 {
  16   GDK_EVEN_ODD_RULE,
  17   GDK_WINDING_RULE
  18 } GdkFillRule;
  19
  20 /* Types of overlapping between a rectangle and a region
  21  * GDK_OVERLAP_RECTANGLE_IN: rectangle is in region
  22  * GDK_OVERLAP_RECTANGLE_OUT: rectangle in not in region
  23  * GDK_OVERLAP_RECTANGLE_PART: rectangle in partially in region
  24  */
  25 typedef enum
  26 {
  27   GDK_OVERLAP_RECTANGLE_IN,
  28   GDK_OVERLAP_RECTANGLE_OUT,
  29   GDK_OVERLAP_RECTANGLE_PART
  30 } GdkOverlapType;
  31
  32 typedef void (*GdkSpanFunc) (GdkSpan *span,
  33                              gpointer data);
  34
  35 GdkRegion *gdk_region_new       (void);
  36 GdkRegion *gdk_region_polygon   (GdkPoint     *points,
  37                                  gint          npoints,
  38                                  GdkFillRule   fill_rule);
  39 GdkRegion *gdk_region_copy      (GdkRegion    *region);
  40 GdkRegion *gdk_region_rectangle (GdkRectangle *rectangle);
  41 void       gdk_region_destroy   (GdkRegion    *region);
  42
  43 void           gdk_region_get_clipbox    (GdkRegion     *region,
  44                                           GdkRectangle  *rectangle);
  45 void           gdk_region_get_rectangles (GdkRegion     *region,
  46                                           GdkRectangle **rectangles,
  47                                           gint          *n_rectangles);
  48
  49 gboolean       gdk_region_empty    (GdkRegion    *region);
  50 gboolean       gdk_region_equal    (GdkRegion    *region1,
  51                                     GdkRegion    *region2);
  52 gboolean       gdk_region_point_in (GdkRegion    *region,
  53                                     int           x,
  54                                     int           y);
  55 GdkOverlapType gdk_region_rect_in  (GdkRegion    *region,
  56                                     GdkRectangle *rect);
  57
  58 void gdk_region_offset          (GdkRegion    *region,
  59                                  gint          dx,
  60                                  gint          dy);
  61 void gdk_region_shrink          (GdkRegion    *region,
  62                                  gint          dx,
  63                                  gint          dy);
  64 void gdk_region_union_with_rect (GdkRegion    *region,
  65                                  GdkRectangle *rect);
  66 void gdk_region_intersect       (GdkRegion    *source1,
  67                                  GdkRegion    *source2);
  68 void gdk_region_union           (GdkRegion    *source1,
  69                                  GdkRegion    *source2);
  70 void gdk_region_subtract        (GdkRegion    *source1,
  71                                  GdkRegion    *source2);
  72 void gdk_region_xor             (GdkRegion    *source1,
  73                                  GdkRegion    *source2);
  74
  75 void gdk_region_spans_intersect_foreach (GdkRegion   *region,
  76                                          GdkSpan     *spans,
  77                                          int          n_spans,
  78                                          gboolean     sorted,
  79                                          GdkSpanFunc  function,
  80                                          gpointer     data);
  81
  82 #ifdef __cplusplus
  83 }
  84 #endif /* __cplusplus */
  85
  86 #endif /* __GDK_REGION_H__ */
  87