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/*
* =====================================================================
* Version: 1.0
* Created: 25.08.2012 10:55:27
* Author: Miroslav BendÃk
* Company: LinuxOS.sk
* =====================================================================
*/
#include "PixelAttributes.h"
#include <cstring>
PixelAttributes::PixelAttributes():
m_width(0)
{
for (size_t i = 0; i < LineCount; ++i) {
m_pixelAttributes[i] = nullptr;
}
}
PixelAttributes::~PixelAttributes()
{
freeAttributes();
}
void PixelAttributes::setWidth(int width)
{
freeAttributes();
m_width = width + 1; // 1px gradient calculation
for (size_t i = 0; i < LineCount; ++i) {
m_pixelAttributes[i] = new PixelAttribute[m_width];
}
}
void PixelAttributes::scroll()
{
size_t lineLength = m_width * sizeof(PixelAttribute);
memcpy(m_pixelAttributes[FirstLine], m_pixelAttributes[LastLine], lineLength);
for (size_t i = 1; i < LineCount - 1; ++i) {
memcpy(m_pixelAttributes[i], m_pixelAttributes[EmptyLine], lineLength);
}
}
void PixelAttributes::freeAttributes()
{
for (size_t i = 0; i < LineCount; ++i) {
if (m_pixelAttributes[i] != nullptr) {
delete[] m_pixelAttributes[i];
m_pixelAttributes[i] = nullptr;
}
}
}
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