void RNavigationAction::mousePressEvent(RMouseEvent& event) {
if (event.button() == Qt::MidButton ||
( event.button() == Qt::LeftButton &&
event.modifiers() == Qt::ControlModifier)) {
panOrigin = event.getScreenPosition();
panning = true;
event.getGraphicsView().startPan();
}
}
/**
* This should be called by the mouse move event handler of a higher level
* GUI toolkit. Events are forwarded to the scene and the navigation action
* that is attached to this view.
*/
void RGraphicsView::handleMouseMoveEvent(RMouseEvent& event) {
lastKnownModelPosition = event.getModelPosition();
lastKnownScreenPosition = event.getScreenPosition();
if (scene != NULL) {
scene->handleMouseMoveEvent(event);
}
if (navigationAction != NULL) {
navigationAction->mouseMoveEvent(event);
}
}
/**
* This should be called by the mouse double click event handler of a higher level
* GUI toolkit. Events are forwarded to the scene and the navigation action
* that is attached to this view.
*/
void RGraphicsView::handleMouseDoubleClickEvent(RMouseEvent& event) {
lastKnownModelPosition = event.getModelPosition();
lastKnownScreenPosition = event.getScreenPosition();
if (scene == NULL) {
return;
}
scene->handleMouseDoubleClickEvent(event);
if (navigationAction!=NULL) {
navigationAction->mouseDoubleClickEvent(event);
}
}
void RNavigationAction::mouseMoveEvent(RMouseEvent& event) {
if (panning &&
( event.buttons() == Qt::MidButton ||
( event.buttons() == Qt::LeftButton &&
event.modifiers() == Qt::ControlModifier )
)) {
RVector panTarget = event.getScreenPosition();
RVector panDelta = panTarget - panOrigin;
if (fabs(panDelta.x) > 1 || fabs(panDelta.y) > 1) {
event.getGraphicsView().pan(panDelta);
panOrigin = panTarget;
}
}
}
/**
* This should be called by the mouse press event handler of a higher level
* GUI toolkit. Events are forwarded to the scene and the navigation action
* that is attached to this view.
*/
void RGraphicsView::handleMousePressEvent(RMouseEvent& event) {
lastKnownModelPosition = event.getModelPosition();
lastKnownScreenPosition = event.getScreenPosition();
if (scene == NULL) {
return;
}
scene->handleMousePressEvent(event);
if (navigationAction!=NULL) {
navigationAction->mousePressEvent(event);
}
// remember mouse press position to use for mouse release:
//mousePressScreenPosition = event.getScreenPosition();
//mousePressModelPosition = event.getModelPosition();
}
/**
* This should be called by the mouse release event handler of a higher level
* GUI toolkit. Events are forwarded to the scene and the navigation action
* that is attached to this view.
*/
void RGraphicsView::handleMouseReleaseEvent(RMouseEvent& event) {
// use mouse press position for release and final posisiton:
// if (mousePressModelPosition.isValid()) {
// event.setModelPosition(mousePressModelPosition);
// mousePressModelPosition = RVector::invalid;
// }
// if (mousePressScreenPosition.isValid()) {
// event.setScreenPosition(mousePressScreenPosition);
// mousePressScreenPosition = RVector::invalid;
// }
lastKnownModelPosition = event.getModelPosition();
lastKnownScreenPosition = event.getScreenPosition();
if (scene == NULL) {
return;
}
scene->handleMouseReleaseEvent(event);
if (navigationAction!=NULL && !event.isAccepted()) {
navigationAction->mouseReleaseEvent(event);
}
}
void RNavigationAction::mouseReleaseEvent(RMouseEvent& event) {
if (event.button() == Qt::MidButton ||
event.button() == Qt::LeftButton) {
panning = false;
}
}
