void ColorMap::insertControlPoint(double newControlPointValue,const ColorMap::ColorMapValue& newControlPointColor)
{
/* Insert the new control point if it is inside the value range: */
if(newControlPointValue>=valueRange.first&&newControlPointValue<=valueRange.second)
{
/* Find the two control points on either side of the new control point: */
ControlPoint* cpPtr1=&first;
ControlPoint* cpPtr2;
for(cpPtr2=cpPtr1->right;cpPtr2!=&last&&cpPtr2->value<newControlPointValue;cpPtr1=cpPtr2,cpPtr2=cpPtr2->right)
;
/* Insert the new control point: */
ControlPoint* newCp=new ControlPoint(newControlPointValue,newControlPointColor);
newCp->left=cpPtr1;
cpPtr1->right=newCp;
newCp->right=cpPtr2;
cpPtr2->left=newCp;
/* Update all control points: */
updateControlPoints();
{
/* Call the color map change callbacks: */
ColorMapChangedCallbackData cbData(this);
colorMapChangedCallbacks.call(&cbData);
}
{
/* Select the new control point: */
SelectedControlPointChangedCallbackData cbData(this,selected,newCp);
selected=newCp;
selectedControlPointChangedCallbacks.call(&cbData);
}
}
}
void InputDevice::setSingleButtonPressed(int index)
{
for(int i=0;i<numButtons;++i)
{
if(i!=index)
{
if(buttonStates[i])
{
buttonStates[i]=false;
if(callbacksEnabled)
{
ButtonCallbackData cbData(this,i,false);
buttonCallbacks[i].call(&cbData);
}
}
}
}
ButtonCallbackData cbData(this,index,true);
if(!buttonStates[index])
{
buttonStates[index]=true;
if(callbacksEnabled)
buttonCallbacks[index].call(&cbData);
}
}
void ColorMap::deleteSelectedControlPoint(void)
{
/* Remove the selected control point if possible: */
if(selected!=0&&selected!=&first&&selected!=&last)
{
ControlPoint* delPtr=selected;
{
/* Unselect the selected control point: */
SelectedControlPointChangedCallbackData cbData(this,selected,0);
selected=0;
selectedControlPointChangedCallbacks.call(&cbData);
}
/* Remove the control point from the list: */
delPtr->left->right=delPtr->right;
delPtr->right->left=delPtr->left;
delete delPtr;
/* Update all control points: */
updateControlPoints();
{
/* Call the color map change callbacks: */
ColorMapChangedCallbackData cbData(this);
colorMapChangedCallbacks.call(&cbData);
}
}
}
void ColorMap::pointerMotion(Event& event)
{
if(isDragging)
{
/* Calculate the new value and opacity: */
GLfloat x1=colorMapAreaBox.getCorner(0)[0];
GLfloat x2=colorMapAreaBox.getCorner(1)[0];
GLfloat y1=colorMapAreaBox.getCorner(0)[1];
GLfloat y2=colorMapAreaBox.getCorner(2)[1];
Point p=event.getWidgetPoint().getPoint()-dragOffset;
double newValue=(p[0]-double(x1))*(valueRange.second-valueRange.first)/double(x2-x1)+valueRange.first;
if(selected==&first)
newValue=valueRange.first;
else if(selected==&last)
newValue=valueRange.second;
else if(newValue<selected->left->value)
newValue=selected->left->value;
else if(newValue>selected->right->value)
newValue=selected->right->value;
GLfloat newOpacity=(p[1]-y1)*(1.0f-0.0f)/(y2-y1)+0.0f;
if(newOpacity<0.0f)
newOpacity=0.0f;
else if(newOpacity>1.0f)
newOpacity=1.0f;
selected->value=newValue;
selected->color[3]=newOpacity;
/* Update all control points: */
updateControlPoints();
/* Call the color map change callbacks: */
ColorMapChangedCallbackData cbData(this);
colorMapChangedCallbacks.call(&cbData);
}
}
void FileSelectionDialog::listItemSelectedCallback(ListBox::ItemSelectedCallbackData* cbData)
{
/* Get the selected list item's name: */
std::string item=cbData->listBox->getItem(cbData->selectedItem);
/* Check if it's a file or directory: */
if(item[item.size()-1]=='/')
{
/* Remove all path buttons after the selected one: */
for(GLint i=pathButtonBox->getNumColumns()-1;i>selectedPathButton;--i)
pathButtonBox->removeWidgets(i);
/* Add a new path button for the selected directory: */
item.erase(item.end()-1);
char pathButtonName[20];
snprintf(pathButtonName,sizeof(pathButtonName),"PathButton%04d",selectedPathButton);
Button* pathButton=new Button(pathButtonName,pathButtonBox,item.c_str());
pathButton->setBorderWidth(pathButton->getBorderWidth()*0.5f);
pathButton->getSelectCallbacks().add(this,&FileSelectionDialog::pathButtonSelectedCallback);
/* Select the new path button: */
setSelectedPathButton(selectedPathButton+1);
}
else
{
/* Assemble the fully qualified name of the selected file: */
std::string selectedFileName=getCurrentPath();
selectedFileName.push_back('/');
selectedFileName+=item;
/* Call the OK callbacks: */
OKCallbackData cbData(this,selectedFileName);
okCallbacks.call(&cbData);
}
}
void NewButton::setArmed(bool newArmed)
{
if(newArmed&&!isArmed)
{
/* Arm the button: */
savedBorderType=getBorderType();
savedBackgroundColor=backgroundColor;
SingleChildContainer::setBorderType(savedBorderType!=Widget::LOWERED?Widget::LOWERED:Widget::RAISED); // Need to use base class method here
SingleChildContainer::setBackgroundColor(armedBackgroundColor); // Need to use base class method here
if(child!=0)
child->setBackgroundColor(armedBackgroundColor);
isArmed=true;
}
else if(!newArmed&&isArmed)
{
/* Disarm the button: */
SingleChildContainer::setBorderType(savedBorderType); // Need to use base class method here
SingleChildContainer::setBackgroundColor(savedBackgroundColor); // Need to use base class method here
if(child!=0)
child->setBackgroundColor(savedBackgroundColor);
isArmed=false;
}
/* Call the arm callbacks: */
ArmCallbackData cbData(this,isArmed);
armCallbacks.call(&cbData);
}
static int MD5CBFn_File(MD5CBData *pData)
{
MD5CBFn_File_data* cbData((MD5CBFn_File_data*)pData->pUserData);
cbData->percentage.SetTototal(pData->totalSize);
cbData->percentage.Update(pData->done);
return cbData->pFilter->GetDlg()->IsSearchCancelled();
}
void RadioBox::childrenValueChangedCallbackWrapper(Misc::CallbackData* callbackData,void* userData)
{
/* Extract the widget pointers: */
ToggleButton::ValueChangedCallbackData* cbStruct=static_cast<ToggleButton::ValueChangedCallbackData*>(callbackData);
RadioBox* thisPtr=static_cast<RadioBox*>(userData);
/* Change the radio box' state: */
ToggleButton* oldSelectedToggle=thisPtr->selectedToggle;
if(cbStruct->set)
{
/* Unset the previously selected toggle: */
if(oldSelectedToggle!=0&&oldSelectedToggle!=cbStruct->toggle)
oldSelectedToggle->setToggle(false);
/* Set the new toggle: */
thisPtr->selectedToggle=cbStruct->toggle;
}
else if(cbStruct->toggle==oldSelectedToggle)
{
if(thisPtr->selectionMode==ALWAYS_ONE) // We can't allow the selected toggle to just unselect itself!
oldSelectedToggle->setToggle(true);
else
thisPtr->selectedToggle=0;
}
/* Call the value changed callbacks: */
RadioBox::ValueChangedCallbackData cbData(thisPtr,oldSelectedToggle,thisPtr->selectedToggle);
thisPtr->valueChangedCallbacks.call(&cbData);
}
void ColorMap::createColorMap(const std::vector<ColorMap::ControlPoint>& controlPoints)
{
/* Check if the control point vector is valid: */
if(controlPoints.size()<2)
Misc::throwStdErr("ColorMap::createColorMap: control point vector has less than two control points");
for(std::vector<ColorMap::ControlPoint>::const_iterator cpIt=controlPoints.begin();cpIt!=controlPoints.end();++cpIt)
{
std::vector<ColorMap::ControlPoint>::const_iterator cpIt2=cpIt;
++cpIt2;
if(cpIt2!=controlPoints.end())
if(cpIt->value>cpIt2->value)
Misc::throwStdErr("ColorMap::createColorMap: control point vector has decreasing control point values");
}
/* Delete the current color map: */
deleteColorMap();
/* Copy all control points from the control point array: */
int numPointsSet=0;
for(std::vector<ColorMap::ControlPoint>::const_iterator cpIt=controlPoints.begin();cpIt!=controlPoints.end();++cpIt)
{
if(numPointsSet==0)
{
/* Set the first control point: */
first.value=cpIt->value;
first.color=cpIt->color;
}
else
{
if(numPointsSet>1)
{
/* Copy the last control point to an intermediate one: */
ControlPoint* newCp=new ControlPoint(last.value,last.color);
newCp->left=last.left;
newCp->left->right=newCp;
newCp->right=&last;
last.left=newCp;
}
/* Set the last control point: */
last.value=cpIt->value;
last.color=cpIt->color;
}
++numPointsSet;
}
/* Update the value range: */
valueRange.first=first.value;
valueRange.second=last.value;
/* Update all control points: */
updateControlPoints();
/* Call the color map change callbacks: */
ColorMapChangedCallbackData cbData(this);
colorMapChangedCallbacks.call(&cbData);
}
void ColorMapEditor::
pointerButtonDown(Event& event)
{
//find the closest control point to the event's location
GLfloat minDist2 = Math::sqr(controlPointSize*1.5f);
int newSelected = -1;
GLfloat x1 = colorMapAreaBox.getCorner(0)[0];
GLfloat x2 = colorMapAreaBox.getCorner(1)[0];
int numPoints = static_cast<int>(controlPoints.size());
for (int i=0; i<numPoints; ++i)
{
const Point& cp = controlPoints[i];
GLfloat dist2 = Geometry::sqrDist(cp,event.getWidgetPoint().getPoint());
if (minDist2 > dist2)
{
minDist2 = dist2;
newSelected = i;
for (int j=0; j<2; ++j)
{
dragOffset[j] = Point::Vector::Scalar(
event.getWidgetPoint().getPoint()[j] - cp[j]);
}
dragOffset[2] = Point::Vector::Scalar(0);
}
}
//create a new control point if none was selected
Misc::ColorMap::ValueRange vr = colorMap.getValueRange();
if (newSelected == -1)
{
//compute the value of the current click-point
double remap = (vr.max - vr.min) / double(x2 - x1);
double newValue = (event.getWidgetPoint().getPoint()[0] - double(x1));
newValue = vr.min + newValue * remap;
//clamp it to the value range
newValue = std::max(newValue, vr.min);
newValue = std::min(newValue, vr.max);
//select the inserted point
selected = insertControlPoint(newValue);
}
else if(newSelected == selected)
{
//start dragging the selected control point
isDragging = true;
}
else
{
//call callbacks if selected control point has changed
SelectedControlPointChangedCallbackData cbData(this, selected,
newSelected);
selected = newSelected;
selectedControlPointChangedCallbacks.call(&cbData);
}
}
void InputDevice::setButtonState(int index,bool newButtonState)
{
ButtonCallbackData cbData(this,index,newButtonState);
if(buttonStates[index]!=newButtonState)
{
buttonStates[index]=newButtonState;
if(callbacksEnabled)
buttonCallbacks[index].call(&cbData);
}
}
void DragWidget::stopDragging(Event&)
{
if(isDragging)
{
/* Stop dragging: */
isDragging=false;
DraggingCallbackData cbData(this,DraggingCallbackData::DRAGGING_STOPPED);
draggingCallbacks.call(&cbData);
}
}
void DragWidget::startDragging(Event&)
{
if(!isDragging)
{
/* Start dragging: */
isDragging=true;
DraggingCallbackData cbData(this,DraggingCallbackData::DRAGGING_STARTED);
draggingCallbacks.call(&cbData);
}
}
void InputDeviceManager::updateInputDevices(void)
{
/* Grab new data from all input device adapters: */
for(int i=0;i<numInputDeviceAdapters;++i)
inputDeviceAdapters[i]->updateInputDevices();
/* Call the update callbacks: */
InputDeviceUpdateCallbackData cbData(this);
inputDeviceUpdateCallbacks.call(&cbData);
}
void ColorMapEditor::
touch()
{
//update all control points
updateControlPoints();
//call the color map change callbacks: */
ColorMapChangedCallbackData cbData(this);
colorMapChangedCallbacks.call(&cbData);
}
void Menu::childrenSelectCallbackWrapper(Misc::CallbackData* callbackData,void* userData)
{
/* Extract the widget pointers: */
Button::SelectCallbackData* cbStruct=static_cast<Button::SelectCallbackData*>(callbackData);
Menu* thisPtr=static_cast<Menu*>(userData);
/* Call the entry select callbacks: */
EntrySelectCallbackData cbData(thisPtr,cbStruct->button,cbStruct);
thisPtr->entrySelectCallbacks.call(&cbData);
}
void InputDevice::setValuator(int index,double value)
{
ValuatorCallbackData cbData(this,index,valuatorValues[index],value);
if(valuatorValues[index]!=value)
{
valuatorValues[index]=value;
if(callbacksEnabled)
valuatorCallbacks[index].call(&cbData);
}
}
int Registry(int isitget, const char *keyName, char *ItemName, char *buffer, char *errstr)
{
bool done(false);
char achClass[MAX_PATH], achValue[MAX_VALUE_NAME];
DWORD cchClassName(MAX_PATH), cSubKeys(0), cbMaxSubKey, cchMaxClass, cValues, cchMaxValue, cbMaxValueData, cbSecurityDescriptor, cchValue(MAX_VALUE_NAME);
DWORD retCode, i;
FILETIME ftLastWriteTime; // last write time
HKEY key;
DWORD dw(0), dwres, dwType, cbData(MAX_PATH);
BYTE btdata[MAX_PATH];
achClass[0]='\0';
LONG ln = RegCreateKeyEx( HKEY_CURRENT_USER, keyName, 0, NULL, 0, KEY_ALL_ACCESS, NULL, &key, &dwres);
if (!isitget) // Set values in the registry
{
if (RegSetValueEx(key, ItemName, 0, REG_SZ, (const BYTE*)&buffer[0], (DWORD)strlen(buffer))!=ERROR_SUCCESS)
{ strcpy(errstr,"error on RegSetValueEx()"); return 0; }
}
else // Get values from the registry
{
if (dwres==REG_CREATED_NEW_KEY)
{ strcpy(errstr,"The registry key does not exist (just created now)"); return 0; }
else if (dwres==REG_OPENED_EXISTING_KEY)
{
retCode = RegQueryInfoKey(key, achClass, &cchClassName, NULL,
&cSubKeys, &cbMaxSubKey, &cchMaxClass, &cValues, &cchMaxValue,
&cbMaxValueData, &cbSecurityDescriptor, &ftLastWriteTime);
if (cValues)
{
for (i=0, retCode=ERROR_SUCCESS; i<cValues; i++)
{
achValue[0] = '\0';
cchValue = cbData = MAX_PATH;
retCode = RegEnumValue(key, i, achValue, &cchValue, NULL, &dwType, btdata, &cbData);
if (retCode == ERROR_SUCCESS)
{
if (!strcmp(achValue,ItemName))
{
done = true;
strcpy(buffer, (LPCSTR)btdata);
}
}
else
{ strcpy(errstr,"error on RegEnumValue()"); return 0; }
}
if (!done) { sprintf(errstr,"The registry key item %s does not exist.",ItemName ); return 0; }
}
else
{ sprintf(errstr,"No key associated with %s found.", keyName); return 0; }
}
}
RegCloseKey(key);
return 1;
}
void InputDevice::enableCallbacks(void)
{
callbacksEnabled=true;
/* Call callbacks for everything that has changed, to update the user program's state: */
CallbackData trackingCbData(this);
trackingCallbacks.call(&trackingCbData);
for(int i=0;i<numButtons;++i)
if(savedButtonStates[i]!=buttonStates[i])
{
ButtonCallbackData cbData(this,i,buttonStates[i]);
buttonCallbacks[i].call(&cbData);
}
for(int i=0;i<numValuators;++i)
if(savedValuatorValues[i]!=valuatorValues[i])
{
ValuatorCallbackData cbData(this,i,savedValuatorValues[i],valuatorValues[i]);
valuatorCallbacks[i].call(&cbData);
}
}
void ColorMapEditor::
selectControlPoint(int controlPointIndex)
{
if (controlPointIndex<static_cast<int>(controlPoints.size()))
{
SelectedControlPointChangedCallbackData cbData(this, selected,
controlPointIndex);
selected = controlPointIndex;
selectedControlPointChangedCallbacks.call(&cbData);
}
}
InputDevice* InputDeviceManager::createInputDevice(const char* deviceName,int trackType,int numButtons,int numValuators,bool physicalDevice)
{
/* Get the length of the given device name's prefix: */
int deviceNamePrefixLength=getPrefixLength(deviceName);
/* Check if a device of the same name prefix already exists: */
bool exists=false;
int maxAliasIndex=0;
for(InputDevices::iterator devIt=inputDevices.begin();devIt!=inputDevices.end();++devIt)
{
/* Compare the two prefixes: */
if(getPrefixLength(devIt->getDeviceName())==deviceNamePrefixLength&&strncmp(deviceName,devIt->getDeviceName(),deviceNamePrefixLength)==0)
{
exists=true;
if(devIt->getDeviceName()[deviceNamePrefixLength]==':')
{
int aliasIndex=atoi(devIt->getDeviceName()+deviceNamePrefixLength);
if(maxAliasIndex<aliasIndex)
maxAliasIndex=aliasIndex;
}
}
}
/* Create a new (uninitialized) input device: */
InputDevices::iterator newDevice=inputDevices.insert(inputDevices.end(),InputDevice());
InputDevice* newDevicePtr=&(*newDevice); // This looks iffy, but I don't know of a better way
/* Initialize the new input device: */
if(exists)
{
/* Create a new alias name for the new device: */
char newDeviceNameBuffer[256];
strncpy(newDeviceNameBuffer,deviceName,deviceNamePrefixLength);
snprintf(newDeviceNameBuffer+deviceNamePrefixLength,sizeof(newDeviceNameBuffer)-deviceNamePrefixLength,":%d",maxAliasIndex+1);
newDevicePtr->set(newDeviceNameBuffer,trackType,numButtons,numValuators);
}
else
newDevicePtr->set(deviceName,trackType,numButtons,numValuators);
/* Add the new input device to the input graph: */
inputGraphManager->addInputDevice(newDevicePtr);
/* If it's a physical device, grab it permanently: */
if(physicalDevice)
inputGraphManager->grabInputDevice(newDevicePtr,0); // Passing in null as grabber grabs for the physical layer
/* Call the input device creation callbacks: */
InputDeviceCreationCallbackData cbData(this,newDevicePtr);
inputDeviceCreationCallbacks.call(&cbData);
/* Return a pointer to the new input device: */
return newDevicePtr;
}
void ColorMap::selectControlPoint(int controlPointIndex)
{
ControlPoint* cpPtr=0;
if(controlPointIndex>=0)
for(cpPtr=&first;controlPointIndex>0&&cpPtr!=0;cpPtr=cpPtr->right,--controlPointIndex)
;
/* Select the new control point: */
SelectedControlPointChangedCallbackData cbData(this,selected,cpPtr);
selected=cpPtr;
selectedControlPointChangedCallbacks.call(&cbData);
}
void MenuTool::deactivate(void)
{
if(active)
{
/* Call deactivation callbacks: */
DeactivationCallbackData cbData(this);
deactivationCallbacks.call(&cbData);
/* Deactivate the tool: */
menu->unlockMenu(this);
active=false;
}
}
void InputDevice::setTransformation(const TrackerState& newTransformation)
{
/* Set transformation: */
transformation=newTransformation;
/* Call callbacks: */
if(callbacksEnabled)
{
/* Call all tracking callbacks: */
CallbackData cbData(this);
trackingCallbacks.call(&cbData);
}
}
void GLContextData::makeCurrent(GLContextData* newCurrentContextData)
{
if(newCurrentContextData!=currentContextData)
{
/* Create the callback data object: */
CurrentContextDataChangedCallbackData cbData(currentContextData,newCurrentContextData);
/* Set the current context data object: */
currentContextData=newCurrentContextData;
/* Call all callbacks: */
currentContextDataChangedCallbacks.call(&cbData);
}
}
void InputDevice::clearButtonStates(void)
{
for(int i=0;i<numButtons;++i)
{
if(buttonStates[i])
{
buttonStates[i]=false;
if(callbacksEnabled)
{
ButtonCallbackData cbData(this,i,false);
buttonCallbacks[i].call(&cbData);
}
}
}
}
void ColorMap::createColorMap(ColorMap::ColorMapCreationType colorMapType,const ColorMap::ValueRange& newValueRange)
{
/* Delete the current color map: */
deleteColorMap();
/* Update the value range: */
valueRange=newValueRange;
if(colorMapType==GREYSCALE)
{
/* Create a greyscale color map: */
first.value=valueRange.first;
first.color=ColorMapValue(0.0f,0.0f,0.0f,0.0f);
last.value=valueRange.second;
last.color=ColorMapValue(1.0f,1.0f,1.0f,1.0f);
}
else if(colorMapType==LUMINANCE)
{
}
else
{
/* Create a rainbow color map: */
first.value=valueRange.first;
first.color=ColorMapValue(1.0f,0.0f,0.0f,0.0f);
ControlPoint* cs[6];
cs[0]=&first;
cs[1]=new ControlPoint((1.0/5.0)*(valueRange.second-valueRange.first)+valueRange.first,ColorMapValue(1.0f,1.0f,0.0f,1.0f/5.0f));
cs[2]=new ControlPoint((2.0/5.0)*(valueRange.second-valueRange.first)+valueRange.first,ColorMapValue(0.0f,1.0f,0.0f,2.0f/5.0f));
cs[3]=new ControlPoint((3.0/5.0)*(valueRange.second-valueRange.first)+valueRange.first,ColorMapValue(0.0f,1.0f,1.0f,3.0f/5.0f));
cs[4]=new ControlPoint((4.0/5.0)*(valueRange.second-valueRange.first)+valueRange.first,ColorMapValue(0.0f,0.0f,1.0f,4.0f/5.0f));
cs[5]=&last;
last.value=valueRange.second;
last.color=ColorMapValue(1.0f,0.0f,1.0f,1.0f);
for(int i=0;i<5;++i)
{
cs[i+1]->left=cs[i];
cs[i]->right=cs[i+1];
}
}
/* Update all control points: */
updateControlPoints();
/* Call the color map change callbacks: */
ColorMapChangedCallbackData cbData(this);
colorMapChangedCallbacks.call(&cbData);
}
void ColorMap::setSelectedControlPointColorValue(const ColorMap::ColorMapValue& newControlPointColorValue)
{
if(selected!=0)
{
/* Set the control point's color value's RGB and alpha components: */
for(int i=0;i<4;++i)
selected->color[i]=newControlPointColorValue[i];
/* Update all control points: */
updateControlPoints();
/* Call the color map change callbacks: */
ColorMapChangedCallbackData cbData(this);
colorMapChangedCallbacks.call(&cbData);
}
}
void ColorMapEditor::
updateControlPoints(bool propagate)
{
//- make sure the control points match the managed color map
Misc::ColorMap::Points& points = colorMap.getPoints();
int numPoints = static_cast<int>(points.size());
if (static_cast<int>(controlPoints.size()) != numPoints)
{
//deselect
if (hasSelectedControlPoint())
{
if (propagate)
{
SelectedControlPointChangedCallbackData cbData(this,
selected, -1);
selected = -1;
selectedControlPointChangedCallbacks.call(&cbData);
}
else
selected = -1;
}
//reassign the control points
controlPoints.resize(numPoints);
}
//- update the visual representation
GLfloat x1 = colorMapAreaBox.getCorner(0)[0];
GLfloat x2 = colorMapAreaBox.getCorner(1)[0];
GLfloat width = x2 - x1;
GLfloat y1 = colorMapAreaBox.getCorner(0)[1];
GLfloat y2 = colorMapAreaBox.getCorner(2)[1];
GLfloat height = y2 - y1;
Misc::ColorMap::ValueRange range = colorMap.getValueRange();
Misc::ColorMap::Value invRangeWidth = 1.0 / (range.max - range.min);
for (int i=0; i<numPoints; ++i)
{
ControlPoint& cp = controlPoints[i];
const Misc::ColorMap::Point& p = points[i];
cp[0] = x1 + GLfloat(invRangeWidth*(p.value - range.min)) * width;
cp[1] = y1 + p.color[3] * height;
cp[2] = colorMapAreaBox.getCorner(0)[2];
}
}
BOOL
CRegistryCfg::SetEntropy(LPBYTE lpbEntropy, DWORD cbEntropy)
{
if(IsBadReadPtr(lpbEntropy, cbEntropy)) {
::SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
// memory to encrypt must be a multiple of CRYPTPROTECTMEMORY_BLOCK_SIZE.
DWORD dwMod = cbEntropy % CRYPTPROTECTMEMORY_BLOCK_SIZE;
DWORD cbData(0);
if (0 == dwMod) {
cbData = cbEntropy + (CRYPTPROTECTMEMORY_BLOCK_SIZE - dwMod);
} else {
cbData = cbEntropy;
}
LPBYTE lpb = (LPBYTE) ::LocalAlloc(LPTR, cbData);
if (NULL == lpb) {
return FALSE;
}
::CopyMemory(lpb, lpbEntropy, cbEntropy);
#ifdef USE_CRYPT_PROTECT_MEMORY
BOOL fSuccess = ::CryptProtectMemory(
lpb,
cbData,
CRYPTPROTECTMEMORY_SAME_PROCESS);
if (!fSuccess) {
::SecureZeroMemory(lpb, cbData);
::LocalFree(lpb);
return FALSE;
}
#endif
if (m_Entropy.pbData) {
::SecureZeroMemory(m_Entropy.pbData, m_Entropy.cbData);
::LocalFree(m_Entropy.pbData);
}
m_bEntropyProtected = TRUE;
m_Entropy.pbData = lpb;
m_Entropy.cbData = cbData;
return TRUE;
}