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#include "graphaxiswidget.h"
#include <QMouseEvent>
GraphAxisWidget::GraphAxisWidget(QWidget* parent) :
QWidget(parent),
m_selectable(None),
m_selectionState(NULL)
{
}
bool GraphAxisWidget::hasSelection()
{
if (!m_selectionState) {
return false;
}
if (m_selectionState->type == SelectionState::Horizontal && m_orientation == GraphAxisWidget::Horizontal) {
return true;
}
if (m_selectionState->type == SelectionState::Vertical && m_orientation == GraphAxisWidget::Vertical) {
return true;
}
return false;
}
void GraphAxisWidget::setSelectable(SelectionStyle selectable)
{
m_selectable = selectable;
}
void GraphAxisWidget::setSelectionState(SelectionState* state)
{
m_selectionState = state;
}
void GraphAxisWidget::setOrientation(Orientation v)
{
m_orientation = v;
if (m_orientation == Horizontal) {
setMinimumWidth(60);
} else {
setMinimumHeight(60);
}
}
void GraphAxisWidget::mouseMoveEvent(QMouseEvent *e)
{
if (m_selectable == None) {
return;
}
int pos, max;
if (m_orientation == Horizontal) {
pos = e->x();
max = width();
} else {
pos = e->y();
max = height();
}
double value = m_valueEnd - m_valueBegin;
value *= pos / (double)max;
value += m_valueBegin;
if (e->buttons().testFlag(Qt::LeftButton)) {
m_selectionState->start = qMin<qint64>(m_mousePressValue, value);
m_selectionState->end = qMax<qint64>(m_mousePressValue, value);
m_selectionState->type = m_orientation == Horizontal ? SelectionState::Horizontal : SelectionState::Vertical;
emit selectionChanged();
update();
}
}
void GraphAxisWidget::mousePressEvent(QMouseEvent *e)
{
if (m_selectable == None) {
return;
}
int pos, max;
if (m_orientation == Horizontal) {
pos = e->x();
max = width();
} else {
pos = e->y();
max = height();
}
double value = m_valueEnd - m_valueBegin;
value *= pos / (double)max;
value += m_valueBegin;
m_mousePressPosition = e->pos();
m_mousePressValue = value;
}
void GraphAxisWidget::mouseReleaseEvent(QMouseEvent *e)
{
if (m_selectable == None) {
return;
}
int dx = qAbs(m_mousePressPosition.x() - e->x());
int dy = qAbs(m_mousePressPosition.y() - e->y());
if (dx + dy < 2) {
m_selectionState->type = SelectionState::None;
emit selectionChanged();
}
}
void GraphAxisWidget::setRange(qint64 min, qint64 max)
{
m_valueMin = min;
m_valueMax = max;
update();
}
void GraphAxisWidget::setView(qint64 start, qint64 end)
{
m_valueBegin = start;
m_valueEnd = end;
update();
}
#include "graphaxiswidget.moc"
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