src/ui/Gesture.cc

   1 /* Shopper
   2  * Copyright (C) 2008 David Greaves
   3  *
   4  * This software is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public License
   6  * as published by the Free Software Foundation; either version 2.1 of
   7  * the License, or (at your option) any later version.
   8  *
   9  * This software is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this software; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  17  * 02110-1301 USA
  18  *
  19  */
  20
  21 //#define DEBUG_SHOPPER 1
  22 #include "shopper.h"           // automake, i8n, gettext
  23 #include "Gesture.h"
  24
  25 #include <QList>
  26 #include <QHash>
  27
  28 GestureConnectionStore::GestureConnectionStore() : QObject() {};
  29
  30 struct Gesture::Private
  31 {
  32         // available via public API
  33         QString  shape;     // holds the string encoding of the shape.
  34
  35         // avialable via friend API, populated by 'connect'
  36         GestureConnectionStore * connectionStore;
  37 };
  38
  39
  40 // Public
  41 Gesture::Gesture(QString shape)
  42 {
  43         p = new Private;
  44         p->shape = shape;
  45         p->connectionStore = 0;
  46 }
  47 // Protected
  48 Gesture::Gesture(Gesture *g)
  49 {
  50         p = new Private;
  51         p->shape = g->p->shape;
  52         p->connectionStore = 0;
  53 }
  54
  55 Gesture::Gesture(const Gesture &g)
  56 {
  57         p = new Private;
  58         p->shape = g.p->shape;
  59         p->connectionStore = 0;
  60 }
  61
  62 Gesture::~Gesture()
  63 {
  64         if (p->connectionStore)
  65                 delete p->connectionStore;
  66
  67         delete p;
  68 }
  69
  70 ////////////////////////////////////////////////////////////////
  71 // operators
  72 bool operator==(const Gesture &A, const Gesture &B)
  73 {
  74         return A.p->shape == B.p->shape;
  75 }
  76
  77 uint qHash(const Gesture &A)
  78 {
  79         QString s=A.p->shape;
  80         return qHash(s);
  81 }
  82
  83
  84 ////////////////////////////////////////////////////////////////
  85 // Public interface
  86 void Gesture::addStroke(QString stroke)
  87 {
  88         p->shape+=stroke;
  89 }
  90
  91 QString Gesture::shape() const
  92 {
  93         return p->shape;
  94 }
  95
  96
  97 ////////////////////////////////////////////////////////////////
  98 // Protected interface
  99 void Gesture::connect(QObject* receiver, const char* method)
 100 {
 101         if      (p->connectionStore == 0)
 102                 p->connectionStore = new GestureConnectionStore;
 103
 104         p->connectionStore->connect(p->connectionStore, SIGNAL(activated()),
 105                                                                 receiver, method);
 106 }
 107
 108 bool Gesture::disconnect(QObject* receiver, const char* method)
 109 {
 110         Q_ASSERT(p->connectionStore != 0);
 111         if (p->connectionStore == 0)
 112                 return false;
 113
 114         return p->connectionStore->disconnect(p->connectionStore, SIGNAL(activated()),
 115                                                                                   receiver, method);
 116 }
 117
 118 void Gesture::invoke()
 119 {
 120         if      (p->connectionStore)
 121                 p->connectionStore->activated();
 122 }