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#include "viewGridNavigator.h"
unsigned int cGridElement::AbsoluteGridIdCounter = 0;
cGridElement::cGridElement()
{
m_iGridId = AbsoluteGridIdCounter++;
Position = -1;
m_bInit = true;
}
cViewGridNavigator::cViewGridNavigator(cViewGrid* viewGrid)
{
m_columns = 2;
m_rows = 2;
m_newDimensions = true;
m_setIterator = true;
m_pGrid = std::shared_ptr<cViewGrid>(viewGrid);
}
void cViewGridNavigator::FilterElements(int scrollOffset)
{
int startOffset = scrollOffset;
int endOffset = startOffset + (m_rows * m_columns);
if(scrollOffset < 0) {
endOffset = (m_rows * m_columns) + scrollOffset;
}
std::vector<cGridElement*>::iterator begin = m_firstElementIter + startOffset;
std::vector<cGridElement*>::iterator end = m_firstElementIter + endOffset;
if(end > m_vElements.end()) end = m_vElements.end();
int pos = 0;
for(std::vector<cGridElement*>::iterator it = begin; it != end; ++it) {
cGridElement *elem = *it;
elem->Position = pos++;
SetGridElementData(elem);
}
if(m_setIterator) {
m_activeElementIter = begin;
m_pGrid->SetCurrent((*m_activeElementIter)->GridElementId(), true);
m_setIterator = false;
}
//remove non visible elements from grid
if(scrollOffset !=0 ) {
auto startIt = m_firstElementIter;
auto endIt = m_firstElementIter + scrollOffset;
if(scrollOffset < 0) {
startIt = m_lastElementIter + scrollOffset;
endIt = m_lastElementIter;
}
if(startIt < m_vElements.begin()) startIt = m_vElements.begin();
if(endIt > m_vElements.end()) endIt = m_vElements.end();
for(std::vector<cGridElement*>::iterator it = startIt; it != endIt; ++it) {
m_pGrid->Delete((*it)->GridElementId());
(*it)->Dirty();
(*it)->Position = -1;
}
}
m_firstElementIter = begin;
m_lastElementIter = end;
m_newDimensions = false;
}
void cViewGridNavigator::SetGridElementData(cGridElement *obj)
{
// calculate position
double row, column, x, y, height, width;
row = floor(obj->Position / m_columns);
column = obj->Position - (row * m_columns);
width = 1.0 / m_columns;
height = 1.0 / m_rows;
x = width * column;
y= height * row;
//std::cout << "ID: " << obj->GridElementId() << "\tPos: " << obj->Position << "\t\tx: " << x << "\t\ty: " << y << "\t\twi: " << width << "\t\thei: " << height << "\tCol: " << column << "\tRow: " << row << std::endl;
if(obj->IsNew() || m_newDimensions) {
// fill data
obj->AddTokens(m_pGrid);
m_pGrid->SetGrid(obj->GridElementId(), x, y, width, height);
obj->InitFinished();
} else {
m_pGrid->MoveGrid(obj->GridElementId(), x, y, width, height);
}
}
void cViewGridNavigator::SetGridDimensions(int rows, int columns)
{
m_rows = rows;
m_columns = columns;
m_newDimensions = true;
}
void cViewGridNavigator::NavigateDown()
{
if(m_activeElementIter + m_columns >= m_vElements.end()) return;
auto next = m_activeElementIter + m_columns;
// scroll down?
if(!(*next)->IsVisible()) {
FilterElements(m_columns);
}
m_pGrid->SetCurrent((*m_activeElementIter)->GridElementId(), false);
m_pGrid->SetCurrent((*next)->GridElementId(), true);
m_activeElementIter = next;
}
void cViewGridNavigator::NavigateUp()
{
if(m_activeElementIter - m_columns < m_vElements.begin()) return;
auto next = m_activeElementIter - m_columns;
//scroll up?
if(!(*next)->IsVisible()) {
FilterElements(-m_columns);
}
m_pGrid->SetCurrent((*m_activeElementIter)->GridElementId(), false);
m_pGrid->SetCurrent((*next)->GridElementId(), true);
m_activeElementIter = next;
}
void cViewGridNavigator::NavigateLeft()
{
auto next = m_activeElementIter - 1;
if(next < m_vElements.begin()) next = m_vElements.begin();
if(!(*next)->IsVisible()) {
auto temp = m_activeElementIter;
FilterElements(-m_columns);
m_activeElementIter = temp;
}
m_pGrid->SetCurrent((*m_activeElementIter)->GridElementId(), false);
m_pGrid->SetCurrent((*next)->GridElementId(), true);
m_activeElementIter = next;
}
void cViewGridNavigator::NavigateRight()
{
auto next = m_activeElementIter + 1;
if(next >= m_vElements.end()) next = m_vElements.end()-1;
if(!(*next)->IsVisible()) {
FilterElements(m_columns);
}
m_pGrid->SetCurrent((*m_activeElementIter)->GridElementId(), false);
m_pGrid->SetCurrent((*next)->GridElementId(), true);
m_activeElementIter = next;
}
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