Src/DasherCore/AlternatingDirectMode.cpp

   1 // DasherButtons.cpp, build a set of boxes for Button Dasher.
   2 // Copyright 2005, Chris Ball and David MacKay.  GPL.
   3
   4 // Idea - should back off button always just undo the previous 'forwards' button?
   5
   6 #include "../Common/Common.h"
   7
   8 #include "AlternatingDirectMode.h"
   9 #include "DasherScreen.h"
  10 #include "DasherInterfaceBase.h"
  11 #include <valarray>
  12 #include <iostream>
  13
  14 // Track memory leaks on Windows to the line that new'd the memory
  15 #ifdef _WIN32
  16 #ifdef _DEBUG_MEMLEAKS
  17 #define DEBUG_NEW new( _NORMAL_BLOCK, THIS_FILE, __LINE__ )
  18 #define new DEBUG_NEW
  19 #undef THIS_FILE
  20 static char THIS_FILE[] = __FILE__;
  21 #endif
  22 #endif
  23
  24 using namespace Dasher;
  25
  26 static SModuleSettings sSettings[] = {
  27   /* TRANSLATORS: The number of time steps over which to perform the zooming motion in button mode. */
  28   {LP_ZOOMSTEPS, T_LONG, 1, 63, 1, 1, _("Frames over which to perform zoom")},
  29   /* TRANSLATORS: Intercept keyboard events for 'special' keys even when the Dasher window doesn't have keyboard focus.*/
  30   {BP_GLOBAL_KEYBOARD, T_BOOL, -1, -1, -1, -1, _("Global keyboard grab")}
  31 };
  32
  33 CAlternatingDirectMode::CAlternatingDirectMode(CSettingsUser *pCreator, CDasherInterfaceBase *pInterface)
  34   : CDasherButtons(pCreator, pInterface, false/*menu*/, 12, _("Alternating Direct Mode")) {}
  35
  36 void CAlternatingDirectMode::SetupBoxes()
  37 {
  38   m_pBoxes = new SBoxInfo[m_iNumBoxes = 5];
  39
  40   // Fast boxes
  41
  42   m_pBoxes[0].iTop = 0;
  43   m_pBoxes[0].iBottom = 1000;
  44   m_pBoxes[1].iTop = 3096;
  45   m_pBoxes[1].iBottom = 4096;
  46
  47   // Slow boxes
  48
  49   m_pBoxes[2].iTop = 0;
  50   m_pBoxes[2].iBottom = 3096;
  51   m_pBoxes[3].iTop = 1000;
  52   m_pBoxes[3].iBottom = 4096;
  53
  54   m_pBoxes[0].iDisplayTop = m_pBoxes[0].iTop;
  55   m_pBoxes[0].iDisplayBottom = m_pBoxes[0].iBottom;
  56   m_pBoxes[1].iDisplayTop = m_pBoxes[1].iTop;
  57   m_pBoxes[1].iDisplayBottom = m_pBoxes[1].iBottom;
  58   m_pBoxes[2].iDisplayTop = m_pBoxes[2].iTop;
  59   m_pBoxes[2].iDisplayBottom = m_pBoxes[2].iBottom;
  60   m_pBoxes[3].iDisplayTop = m_pBoxes[3].iTop;
  61   m_pBoxes[3].iDisplayBottom = m_pBoxes[3].iBottom;
  62
  63   m_pBoxes[m_iNumBoxes-1].iDisplayTop = 0;
  64   m_pBoxes[m_iNumBoxes-1].iDisplayBottom = CDasherModel::MAX_Y;
  65
  66   m_pBoxes[m_iNumBoxes-1].iTop = int(- CDasherModel::MAX_Y / 2);
  67   m_pBoxes[m_iNumBoxes-1].iBottom = int(CDasherModel::MAX_Y * 1.5);
  68
  69   m_iLastBox = -1;
  70 }
  71
  72 bool CAlternatingDirectMode::DecorateView(CDasherView *pView, CDasherInput *pInput) {
  73
  74   if(m_iLastBox == 1) {
  75     NewDrawGoTo(pView, m_pBoxes[2].iDisplayTop, m_pBoxes[2].iDisplayBottom, false);
  76     NewDrawGoTo(pView, m_pBoxes[1].iDisplayTop, m_pBoxes[3].iDisplayBottom, false);
  77     NewDrawGoTo(pView, m_pBoxes[4].iDisplayTop, m_pBoxes[4].iDisplayBottom, false);
  78   }
  79   else {
  80     NewDrawGoTo(pView, m_pBoxes[0].iDisplayTop, m_pBoxes[0].iDisplayBottom, false);
  81     NewDrawGoTo(pView, m_pBoxes[3].iDisplayTop, m_pBoxes[1].iDisplayBottom, false);
  82     NewDrawGoTo(pView, m_pBoxes[4].iDisplayTop, m_pBoxes[4].iDisplayBottom, false);
  83   }
  84
  85   bool bRV(m_bDecorationChanged);
  86   m_bDecorationChanged = false;
  87   return bRV;
  88 }
  89
  90
  91 void CAlternatingDirectMode::DirectKeyDown(unsigned long iTime, int iId, CDasherView *pView, CDasherModel *pModel) {
  92   int iTargetBox;
  93   switch(iId) {
  94     case 2:
  95       iTargetBox = (m_iLastBox == 1) ? 2 : 0;
  96       m_iLastBox = 1;
  97       break;
  98     case 3:
  99     case 4:
 100       iTargetBox = (m_iLastBox==2) ? 3 : 1;
 101       m_iLastBox = 2;
 102       break;
 103     case 1:
 104       iTargetBox = 4;
 105       break;
 106     default:
 107       //unknown button...do nothing (?)
 108       return;
 109   }
 110   //iTargetBox now indicates the box into which to zoom
 111   ScheduleZoom(pModel, m_pBoxes[iTargetBox].iTop,  m_pBoxes[iTargetBox].iBottom);
 112 }
 113
 114 bool CAlternatingDirectMode::GetSettings(SModuleSettings **pSettings, int *iCount) {
 115   *pSettings = sSettings;
 116   *iCount = sizeof(sSettings) / sizeof(SModuleSettings);
 117
 118   return true;
 119 }