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/*****************************************************************************
* *
* OpenNI 2.x Alpha *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
// --------------------------------
// Includes
// --------------------------------
#include "Keyboard.h"
#include <string.h>
#include <XnOS.h>
// --------------------------------
// Types
// --------------------------------
typedef struct XnKeyboardAction
{
char key;
const char* csDescription;
ActionFunc pCallbackFunc;
int nCallbackArg;
} XnKeyboardAction;
typedef struct XnKeyboardGroup
{
const char* csName;
int nFirst;
int nLast;
int nSpecialFirst;
int nSpecialLast;
} XnKeyboardGroup;
// --------------------------------
// Global Variables
// --------------------------------
XnKeyboardAction g_KeyboardMap[500];
XnKeyboardAction g_KeyboardSpecialMap[100];
XnKeyboardGroup g_Groups[20];
int g_nRegisteredKeys = 0;
int g_nRegisteredSpecialKeys = 0;
int g_nRegisteredGroups = 0;
static bool g_bUserInput = false;
static bool g_bUserInputNumbersOnly = false;
static char g_strUserInput[1024];
static int g_userInputStartPos = 0;
static KeyboardInputEnded g_userInputCallback;
// --------------------------------
// Code
// --------------------------------
void startKeyboardMap()
{
g_nRegisteredKeys = 0;
}
void startKeyboardGroup(const char* csName)
{
g_Groups[g_nRegisteredGroups].csName = csName;
g_Groups[g_nRegisteredGroups].nFirst = g_nRegisteredKeys;
g_Groups[g_nRegisteredGroups].nSpecialFirst = g_nRegisteredSpecialKeys;
}
void registerKey(unsigned char key, const char* Description, ActionFunc func, int arg)
{
XnKeyboardAction* pKey = &g_KeyboardMap[g_nRegisteredKeys++];
pKey->key = key;
pKey->csDescription = Description;
pKey->pCallbackFunc = func;
pKey->nCallbackArg = arg;
}
void registerSpecialKey(char key, const char* Description, ActionFunc func, int arg)
{
XnKeyboardAction* pKey = &g_KeyboardSpecialMap[g_nRegisteredSpecialKeys++];
pKey->key = key;
pKey->csDescription = Description;
pKey->pCallbackFunc = func;
pKey->nCallbackArg = arg;
}
void endKeyboardGroup()
{
g_Groups[g_nRegisteredGroups].nLast = g_nRegisteredKeys;
g_Groups[g_nRegisteredGroups].nSpecialLast = g_nRegisteredSpecialKeys;
g_nRegisteredGroups++;
}
void endKeyboardMap()
{
}
char getRegisteredKey(ActionFunc func, int arg)
{
for (int i = 0; i < g_nRegisteredKeys; ++i)
{
if (g_KeyboardMap[i].pCallbackFunc == func && g_KeyboardMap[i].nCallbackArg == arg)
return g_KeyboardMap[i].key;
}
return 0;
}
int getRegisteredSpecialKey(ActionFunc func, int arg)
{
for (int i = 0; i < g_nRegisteredKeys; ++i)
{
if (g_KeyboardSpecialMap[i].pCallbackFunc == func && g_KeyboardSpecialMap[i].nCallbackArg == arg)
return g_KeyboardSpecialMap[i].key;
}
return 0;
}
void handleKey(unsigned char k)
{
if (g_bUserInput)
{
if (k == 13 || k == 27) // ENTER or ESC
{
if (g_userInputCallback != NULL)
{
g_userInputCallback(k == 13, &g_strUserInput[g_userInputStartPos]);
}
g_bUserInput = false;
}
if (g_bUserInputNumbersOnly && (k < '0' || k > '9'))
{
// ignore
return;
}
int len = (int)strlen(g_strUserInput);
g_strUserInput[len] = k;
g_strUserInput[++len] = '\0';
return;
}
for (int i = 0; i < g_nRegisteredKeys; ++i)
{
if (k == g_KeyboardMap[i].key)
{
g_KeyboardMap[i].pCallbackFunc(g_KeyboardMap[i].nCallbackArg);
return;
}
}
}
void handleSpecialKey(int k)
{
for (int i = 0; i < g_nRegisteredSpecialKeys; ++i)
{
if (k == g_KeyboardSpecialMap[i].key)
{
g_KeyboardSpecialMap[i].pCallbackFunc(g_KeyboardSpecialMap[i].nCallbackArg);
return;
}
}
}
int findGroup(const char* csGroupName)
{
for (int i = 0; i < g_nRegisteredGroups; ++i)
{
if (strcmp(g_Groups[i].csName, csGroupName) == 0)
return i;
}
return -1;
}
void getGroupItems(const char* csGroupName, int *pSpecialKeys, unsigned char* pKeys, const char** pDescs, int* pSpecialCount, int* pCount)
{
// find group
int nGroup = findGroup(csGroupName);
int nCount = 0;
for (int nEntry = g_Groups[nGroup].nSpecialFirst; nEntry < g_Groups[nGroup].nSpecialLast; nEntry++, nCount++)
{
pSpecialKeys[nCount] = g_KeyboardSpecialMap[nEntry].key;
pDescs[nCount] = g_KeyboardSpecialMap[nEntry].csDescription;
}
*pSpecialCount = nCount;
nCount = 0;
for (int nEntry = g_Groups[nGroup].nFirst; nEntry < g_Groups[nGroup].nLast; nEntry++, nCount++)
{
pKeys[nCount] = g_KeyboardMap[nEntry].key;
pDescs[nCount + *pSpecialCount] = g_KeyboardMap[nEntry].csDescription;
}
*pCount = nCount;
}
void startKeyboardInputMode(const char* message, bool numbersOnly, KeyboardInputEnded callback)
{
g_bUserInput = true;
g_bUserInputNumbersOnly = numbersOnly;
xnOSStrCopy(g_strUserInput, message, sizeof(g_strUserInput));
g_userInputStartPos = (int)strlen(message);
g_userInputCallback = callback;
}
const char* getCurrentKeyboardInputMessage()
{
return g_strUserInput;
}
bool isInKeyboardInputMode()
{
return g_bUserInput;
}
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