AbstractScrollArea::AbstractScrollArea(QGraphicsWidget *parent)
: GvbWidget(parent)
, m_viewport(0)
, m_horizontalScrollBar(0)
, m_verticalScrollBar(0)
, m_prevHorizontalValue(0.0)
, m_prevVerticalValue(0.0)
{
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
setContentsMargins(0, 0, 0, 0);
m_horizontalScrollBar = new ScrollBar(Qt::Horizontal, this);
m_horizontalScrollBar->hide();
m_horizontalScrollBar->setContentsMargins(0, 0, 0, 0);
m_horizontalScrollBarPolicy = Qt::ScrollBarAsNeeded;
m_horizontalScrollBar->setZValue(zValue()+1); // Raise scroll bar to top
m_horizontalScrollBar->setVisible(false);
connect(m_horizontalScrollBar, SIGNAL(sliderPositionChange(qreal)),
this, SLOT(horizontalScroll(qreal)));
connect(m_horizontalScrollBar, SIGNAL(sliderPressed()),
this, SLOT(horizontalScrollStart()));
m_verticalScrollBar = new ScrollBar(Qt::Vertical, this);
m_verticalScrollBar->hide();
m_verticalScrollBar->setContentsMargins(0, 0, 0, 0);
m_verticalScrollBarPolicy = Qt::ScrollBarAsNeeded;
m_verticalScrollBar->setZValue(zValue()+1); // Raise scroll bar to top
m_verticalScrollBar->setVisible(false);
connect(m_verticalScrollBar, SIGNAL(sliderPositionChange(qreal)),
this, SLOT(verticalScroll(qreal)));
connect(m_verticalScrollBar, SIGNAL(sliderPressed()),
this, SLOT(verticalScrollStart()));
QGraphicsWidget *viewport = new QGraphicsWidget;
setViewport(viewport);
}
void moveMouse() {
// gesture analysis
barycBufferX[barycBufferIndex] = barycX;
barycBufferY[barycBufferIndex] = barycY;
barycBufferZ[barycBufferIndex] = barycZ;
barycBufferIndex = (barycBufferIndex + 1) % HAND_POS_BUFFER_SIZE;
if (isOpenHand) {
int prevBarycBufferIndex = (barycBufferIndex > 0) ? barycBufferIndex-1 : HAND_POS_BUFFER_SIZE-1;
int countX = -round((barycBufferX[barycBufferIndex] - barycBufferX[prevBarycBufferIndex]) * 600);
int countY = round((barycBufferY[barycBufferIndex] - barycBufferY[prevBarycBufferIndex]) * 600);
verticalScroll(countX, countY);
printf("Scrolling > countX: %d\n", countX);
return;
}
double meanBarycX = 0;
double meanBarycY = 0;
double meanBarycZ = 0;
int i;
for (i=0; i<HAND_POS_BUFFER_SIZE; i++) {
meanBarycX += barycBufferX[i] / HAND_POS_BUFFER_SIZE;
meanBarycY += barycBufferY[i] / HAND_POS_BUFFER_SIZE;
meanBarycZ += barycBufferZ[i] / HAND_POS_BUFFER_SIZE;
}
mousePosX = round(-meanBarycX * 1280 + 640);
mousePosY = round(meanBarycY * 1280 + 400);
if (leftButtonState == MOUSE_CLICK_UP && normVecY < -0.45) {
leftButtonPressed(mousePosX, mousePosY);
leftButtonState = MOUSE_CLICK_DOWN;
printf("Mouse click left down\n");
}
else if (leftButtonState == MOUSE_CLICK_DOWN && normVecY >= -0.45 ) {
leftButtonReleased(mousePosX, mousePosY);
leftButtonState = MOUSE_CLICK_UP;
printf("Mouse click left up\n");
}
else if (rightButtonState == MOUSE_CLICK_UP && normVecX < -0.5) {
rightButtonPressed(mousePosX, mousePosY);
rightButtonState = MOUSE_CLICK_DOWN;
printf("Mouse click right down\n");
}
else if (rightButtonState == MOUSE_CLICK_DOWN && normVecX >= -0.5 ) {
rightButtonReleased(mousePosX, mousePosY);
rightButtonState = MOUSE_CLICK_UP;
printf("Mouse click right up\n");
}
else {
moveCursor(mousePosX, mousePosY);
}
}
