desktop/src/ClickImage.cc

   1 ///
   2 /// \file       ClickImage.cc
   3 ///             Clickable image class
   4 ///
   5
   6 /*
   7     Copyright (C) 2009-2012, Net Direct Inc. (http://www.netdirect.ca/)
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  17
  18     See the GNU General Public License in the COPYING file at the
  19     root directory of this project for more details.
  20 */
  21
  22 #include "ClickImage.h"
  23
  24 //////////////////////////////////////////////////////////////////////////////
  25 // ClickableImage
  26
  27 ClickableImage::ClickableImage(wxWindow *parent,
  28                                 const wxBitmap &image,
  29                                 int ID,
  30                                 int x, int y,
  31                                 bool event_on_up,
  32                                 const wxCursor &hover)
  33         : m_parent(parent)
  34         , m_id(ID)
  35         , m_image(image)
  36         , m_x(x)
  37         , m_y(y)
  38         , m_focus(false)
  39         , m_event_on_up(event_on_up)
  40         , m_hover_cursor(hover)
  41 {
  42 }
  43
  44 bool ClickableImage::CalculateHit(int x, int y)
  45 {
  46         return  ( x >= m_x && x < (m_x + m_image.GetWidth()) )
  47                 &&
  48                 ( y >= m_y && y < (m_y + m_image.GetHeight()) );
  49 }
  50
  51 void ClickableImage::Draw(wxDC &dc)
  52 {
  53         dc.DrawBitmap(m_image, m_x, m_y, true);
  54 }
  55
  56 void ClickableImage::HandleMotion(wxDC &dc, int x, int y)
  57 {
  58         bool focus = CalculateHit(x, y);
  59
  60         if( focus && !m_focus ) {
  61                 // newly in focus
  62                 m_parent->SetCursor(m_hover_cursor);
  63         }
  64         else if( m_focus && !focus ) {
  65                 // not in focus anymore
  66                 m_parent->SetCursor(wxNullCursor);
  67         }
  68
  69         // remember state
  70         m_focus = focus;
  71 }
  72
  73 void ClickableImage::HandleDown(wxDC &dc, int x, int y)
  74 {
  75         if( !m_event_on_up ) {
  76                 m_focus = CalculateHit(x, y);
  77
  78                 if( m_focus ) {
  79                         // replace the cursor
  80                         m_parent->SetCursor(wxNullCursor);
  81                         m_focus = false;
  82
  83                         // send the event
  84                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED,m_id);
  85                         m_parent->GetEventHandler()->ProcessEvent(event);
  86                 }
  87         }
  88 }
  89
  90 void ClickableImage::HandleUp(wxDC &dc, int x, int y)
  91 {
  92         if( m_event_on_up ) {
  93                 m_focus = CalculateHit(x, y);
  94
  95                 if( m_focus ) {
  96                         // replace the cursor
  97                         m_parent->SetCursor(wxNullCursor);
  98                         m_focus = false;
  99
 100                         // send the event
 101                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED,m_id);
 102                         m_parent->GetEventHandler()->ProcessEvent(event);
 103                 }
 104         }
 105 }
 106