lib/Rect.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 // Rect.cc for Blackbox - an X11 Window manager
   3 // Copyright (c) 2001 - 2005 Sean 'Shaleh' Perry <shaleh@debian.org>
   4 // Copyright (c) 1997 - 2000, 2002 - 2005
   5 //         Bradley T Hughes <bhughes at trolltech.com>
   6 //
   7 // Permission is hereby granted, free of charge, to any person obtaining a
   8 // copy of this software and associated documentation files (the "Software"),
   9 // to deal in the Software without restriction, including without limitation
  10 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11 // and/or sell copies of the Software, and to permit persons to whom the
  12 // Software is furnished to do so, subject to the following conditions:
  13 //
  14 // The above copyright notice and this permission notice shall be included in
  15 // all copies or substantial portions of the Software.
  16 //
  17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23 // DEALINGS IN THE SOFTWARE.
  24
  25 #include "Rect.hh"
  26
  27 #include <algorithm>
  28
  29
  30 void bt::Rect::setX(int x_) {
  31   _x2 += x_ - _x1;
  32   _x1 = x_;
  33 }
  34
  35
  36 void bt::Rect::setY(int y_)
  37 {
  38   _y2 += y_ - _y1;
  39   _y1 = y_;
  40 }
  41
  42
  43 void bt::Rect::setPos(int x_, int y_) {
  44   _x2 += x_ - _x1;
  45   _x1 = x_;
  46   _y2 += y_ - _y1;
  47   _y1 = y_;
  48 }
  49
  50
  51 void bt::Rect::setWidth(unsigned int w)
  52 { _x2 = w + _x1 - 1; }
  53
  54
  55 void bt::Rect::setHeight(unsigned int h)
  56 { _y2 = h + _y1 - 1; }
  57
  58
  59 void bt::Rect::setSize(unsigned int w, unsigned int h) {
  60   _x2 = w + _x1 - 1;
  61   _y2 = h + _y1 - 1;
  62 }
  63
  64
  65 void bt::Rect::setRect(int x_, int y_, unsigned int w, unsigned int h)
  66 { *this = bt::Rect(x_, y_, w, h); }
  67
  68
  69 void bt::Rect::setCoords(int l, int t, int r, int b) {
  70   _x1 = l;
  71   _y1 = t;
  72   _x2 = r;
  73   _y2 = b;
  74 }
  75
  76
  77 bt::Rect bt::Rect::operator|(const bt::Rect &a) const {
  78   bt::Rect b;
  79
  80   b._x1 = std::min(_x1, a._x1);
  81   b._y1 = std::min(_y1, a._y1);
  82   b._x2 = std::max(_x2, a._x2);
  83   b._y2 = std::max(_y2, a._y2);
  84
  85   return b;
  86 }
  87
  88
  89 bt::Rect bt::Rect::operator&(const bt::Rect &a) const {
  90   bt::Rect b;
  91
  92   b._x1 = std::max(_x1, a._x1);
  93   b._y1 = std::max(_y1, a._y1);
  94   b._x2 = std::min(_x2, a._x2);
  95   b._y2 = std::min(_y2, a._y2);
  96
  97   return b;
  98 }
  99
 100
 101 bool bt::Rect::intersects(const bt::Rect &a) const {
 102   return std::max(_x1, a._x1) <= std::min(_x2, a._x2) &&
 103          std::max(_y1, a._y1) <= std::min(_y2, a._y2);
 104 }
 105
 106
 107 bool bt::Rect::contains(int x_, int y_) const {
 108   return x_ >= _x1 && x_ <= _x2 &&
 109          y_ >= _y1 && y_ <= _y2;
 110 }
 111
 112
 113 bt::Rect bt::Rect::inside(const Rect &a) const {
 114   Rect r = *this;
 115   if (r._x2 > a._x2)
 116     r.setX(r._x1 - (r._x2 - a._x2));
 117   if (r._x1 < a._x1)
 118     r.setX(a._x1);
 119   if (r._y2 > a._y2)
 120     r.setY(r._y1 - (r._y2 - a._y2));
 121   if (r._y1 < a._y1)
 122     r.setY(a._y1);
 123   return r;
 124 }