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#include "VGADisplay.h"
VGADisplay::VGADisplay()
{
isBright = isBlink = shift = 0;
xCurr = yCurr = 0;
color = (char)VGADisplayInfo::colorAttr::gray;
videoMem = (dchar *)VGADisplayInfo::videoMemAddr;
};
VGADisplay::VGADisplay(uint16 x, uint16 y)
{
isBright = isBlink = shift = 0;
xCurr = yCurr = 0;
color = (char)VGADisplayInfo::colorAttr::gray;
videoMem = (dchar *)VGADisplayInfo::videoMemAddr;
};
VGADisplay& VGADisplay::operator<<(const char &c)
{
printChar(c);
return *this;
};
VGADisplay& VGADisplay::operator<<(const uint32 number)
{
IntConverter conv;
(*this) << conv.uintToChar(number);
return *this;
};
VGADisplay& VGADisplay::operator<<(const uint64 number)
{
IntConverter conv;
(*this) << conv.uintToChar(number);
return *this;
};
VGADisplay& VGADisplay::operator++(int)
{
if(++xCurr == VGADisplayInfo::width)
{
yCurr++;
xCurr = 0;
}
if(yCurr == VGADisplayInfo::height)
{
if(shift)
{
this->doShift();
xCurr = 0;
yCurr--;
}
else xCurr = 0, yCurr = 0;
}
videoMem = (dchar *)(VGADisplayInfo::videoMemAddr)
+ yCurr * VGADisplayInfo::width + xCurr;
return *this;
};
VGADisplay& VGADisplay::operator<<(const char *c)
{
for(int i = 0; c[i] != '\0'; i++)
{
(*this) << c[i];
}
return *this;
};
void VGADisplay::doShift()
{
for(uint16 i = 0; i < VGADisplayInfo::height; i++)
{
for(uint16 j = 0; j < VGADisplayInfo::width; j++)
{
*((dchar *)(VGADisplayInfo::videoMemAddr) + (i - 1) * VGADisplayInfo::width + j) = *((dchar *)(VGADisplayInfo::videoMemAddr) + i * VGADisplayInfo::width + j);
*((dchar *)(VGADisplayInfo::videoMemAddr) + i * VGADisplayInfo::width + j) = (*((dchar *)(VGADisplayInfo::videoMemAddr) + i * VGADisplayInfo::width + j) & 0x00) | ' ';
}
}
};
void VGADisplay::setShift(bool status)
{
shift = status;
};
void VGADisplay::setColor(char colorAttr)
{
color = colorAttr;
};
void VGADisplay::setBlink(bool blinkAttr)
{
isBlink = blinkAttr;
};
void VGADisplay::setBright(bool brigthAttr)
{
isBright = brigthAttr;
};
void VGADisplay::goNewLine()
{
uint16 yCurrOld = yCurr;
while(yCurrOld == yCurr) (*this)++;
};
void VGADisplay::goHorizontalTab()
{
while(xCurr % 8 != 0) (*this)++;
};
bool VGADisplay::printChar(const char &c)
{
switch(c)
{
case '\0': return true;
case '\n': this->goNewLine(); return true;
case '\t': this->goHorizontalTab(); return true;
default:
{
char attr = isBlink << 8 | isBright << 4
| color;
*videoMem = c | attr << 8;
(*this)++;
return false;
}
}
};
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