src/region.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * region.cpp
   4  *
   5  * Copyright 2007 Novell, Inc. (http://www.novell.com)
   6  *
   7  * See the LICENSE file included with the distribution for details.
   8  *
   9  */
  10
  11 #include <config.h>
  12 #include <stdlib.h>
  13
  14 #include "region.h"
  15
  16
  17 Region::Region ()
  18 {
  19         gdkregion = gdk_region_new ();
  20 }
  21
  22 Region::Region (double x, double y, double width, double height)
  23 {
  24         gdkregion = gdk_region_new ();
  25         Union (Rect (x, y, width, height));
  26 }
  27
  28 Region::Region (Rect rect)
  29 {
  30         gdkregion = gdk_region_new ();
  31         Union (rect);
  32 }
  33
  34 Region::Region (GdkRegion *region)
  35 {
  36         gdkregion = gdk_region_copy (region);
  37 }
  38
  39 Region::Region (Region *region)
  40 {
  41         gdkregion = gdk_region_copy (region->gdkregion);
  42 }
  43
  44 Region::~Region ()
  45 {
  46         gdk_region_destroy (gdkregion);
  47         gdkregion = NULL;
  48 }
  49
  50 bool
  51 Region::IsEmpty ()
  52 {
  53         return gdk_region_empty (gdkregion);
  54 }
  55
  56 void
  57 Region::Union (Rect rect)
  58 {
  59         GdkRectangle gdkrect = rect.ToGdkRectangle ();
  60         gdk_region_union_with_rect (gdkregion, &gdkrect);
  61 }
  62
  63 void
  64 Region::Union (GdkRectangle *rect)
  65 {
  66         gdk_region_union_with_rect (gdkregion, rect);
  67 }
  68
  69 void
  70 Region::Union (Region *region)
  71 {
  72         gdk_region_union (gdkregion, region->gdkregion);
  73 }
  74
  75 GdkOverlapType
  76 Region::RectIn (Rect rect)
  77 {
  78         GdkRectangle gdkrect = rect.ToGdkRectangle ();
  79         return gdk_region_rect_in (gdkregion, &gdkrect);
  80 }
  81
  82 void
  83 Region::Intersect (Region *region)
  84 {
  85         gdk_region_intersect (gdkregion, region->gdkregion);
  86 }
  87
  88 void
  89 Region::Intersect (Rect rect)
  90 {
  91         Region tmp = Region (rect);
  92         Intersect (&tmp);
  93 }
  94
  95
  96 void
  97 Region::Subtract (Region *region)
  98 {
  99         gdk_region_subtract (gdkregion, region->gdkregion);
 100 }
 101
 102 void
 103 Region::Subtract (Rect rect)
 104 {
 105         Region tmp = Region (rect);
 106         Subtract (&tmp);
 107 }
 108
 109 void
 110 Region::Offset (int dx, int dy)
 111 {
 112         gdk_region_offset (gdkregion, dx, dy);
 113 }
 114
 115 void
 116 Region::GetRectangles (GdkRectangle **rects, int *count)
 117 {
 118         gdk_region_get_rectangles (gdkregion, rects, count);
 119         //if (*count > 10) {
 120         //      *count = 1;
 121         //      gdk_region_get_clipbox (gdkregion, *rects);
 122         //}
 123 }
 124
 125 Rect
 126 Region::ClipBox ()
 127 {
 128         GdkRectangle clip;
 129         gdk_region_get_clipbox (gdkregion, &clip);
 130         return Rect (clip.x, clip.y, clip.width, clip.height);
 131 }
 132
 133 void
 134 Region::Draw (cairo_t *cr)
 135 {
 136         int i, count;
 137         GdkRectangle *rects;
 138
 139         gdk_region_get_rectangles (gdkregion, &rects, &i);
 140
 141         for (count = 0; count < i; count++)
 142                 cairo_rectangle (cr, rects [count].x, rects [count].y, rects [count].width, rects [count].height);
 143
 144         g_free (rects);
 145 }
 146