Line data    Source code

       1             : /*  GRAPHITE2 LICENSING
       2             : 
       3             :     Copyright 2010, SIL International
       4             :     All rights reserved.
       5             : 
       6             :     This library is free software; you can redistribute it and/or modify
       7             :     it under the terms of the GNU Lesser General Public License as published
       8             :     by the Free Software Foundation; either version 2.1 of License, or
       9             :     (at your option) any later version.
      10             : 
      11             :     This program is distributed in the hope that it will be useful,
      12             :     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :     Lesser General Public License for more details.
      15             : 
      16             :     You should also have received a copy of the GNU Lesser General Public
      17             :     License along with this library in the file named "LICENSE".
      18             :     If not, write to the Free Software Foundation, 51 Franklin Street, 
      19             :     Suite 500, Boston, MA 02110-1335, USA or visit their web page on the 
      20             :     internet at http://www.fsf.org/licenses/lgpl.html.
      21             : 
      22             : Alternatively, the contents of this file may be used under the terms of the
      23             : Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
      24             : License, as published by the Free Software Foundation, either version 2
      25             : of the License or (at your option) any later version.
      26             : */
      27             : #pragma once
      28             : 
      29             : namespace graphite2 {
      30             : 
      31             : class Position
      32             : {
      33             : public:
      34           0 :     Position() : x(0), y(0) { }
      35           0 :     Position(const float inx, const float iny) : x(inx), y(iny) {}
      36           0 :     Position operator + (const Position& a) const { return Position(x + a.x, y + a.y); }
      37           0 :     Position operator - (const Position& a) const { return Position(x - a.x, y - a.y); }
      38           0 :     Position operator * (const float m) const { return Position(x * m, y * m); }
      39           0 :     Position &operator += (const Position &a) { x += a.x; y += a.y; return *this; }
      40           0 :     Position &operator *= (const float m) { x *= m; y *= m; return *this; }
      41             : 
      42             :     float x;
      43             :     float y;
      44             : };
      45             : 
      46             : class Rect
      47             : {
      48             : public :
      49           0 :     Rect() {}
      50           0 :     Rect(const Position& botLeft, const Position& topRight): bl(botLeft), tr(topRight) {}
      51           0 :     Rect widen(const Rect& other) { return Rect(Position(bl.x > other.bl.x ? other.bl.x : bl.x, bl.y > other.bl.y ? other.bl.y : bl.y), Position(tr.x > other.tr.x ? tr.x : other.tr.x, tr.y > other.tr.y ? tr.y : other.tr.y)); }
      52           0 :     Rect operator + (const Position &a) const { return Rect(Position(bl.x + a.x, bl.y + a.y), Position(tr.x + a.x, tr.y + a.y)); }
      53             :     Rect operator - (const Position &a) const { return Rect(Position(bl.x - a.x, bl.y - a.y), Position(tr.x - a.x, tr.y - a.y)); }
      54           0 :     Rect operator * (float m) const { return Rect(Position(bl.x, bl.y) * m, Position(tr.x, tr.y) * m); }
      55           0 :     float width() const { return tr.x - bl.x; }
      56           0 :     float height() const { return tr.y - bl.y; }
      57             : 
      58             :     bool hitTest(Rect &other);
      59             : 
      60             :     // returns Position(overlapx, overlapy) where overlap<0 if overlapping else positive)
      61             :     Position overlap(Position &offset, Rect &other, Position &otherOffset);
      62             :     //Position constrainedAvoid(Position &offset, Rect &box, Rect &sdbox, Position &other, Rect &obox, Rect &osdbox);
      63             : 
      64             :     Position bl;
      65             :     Position tr;
      66             : };
      67             : 
      68             : } // namespace graphite2