bool ScrollPanel::trapped(InterfaceEvent* event){
if(event->source == &scrollBar && scrollBar.visible){
//Handle scroll bar events
if(event->type == InterfaceEvent::LeftPressed){
isScrolling = true;
scrollBar.setBarDown(isScrolling);
}else if(event->type == InterfaceEvent::LeftReleased){
isScrolling = false;
scrollBar.setBarDown(isScrolling);
}else if(event->type == InterfaceEvent::MouseWheelMoved){
if(scrollBar.visible){
yScroll -= (scrollArea.y / 20)*(*(int*)event->args);
scrollChanged();
}
}
return true;
}else if(event->type == InterfaceEvent::MouseWheelMoved && scrollBar.visible){
//If mouse wheel is scrolled anywhere in this panel apply scroll.
yScroll -= (scrollArea.y / 20)*(*(int*)event->args);
scrollChanged();
return true;
}
return false;
}
/**
* Redraw scroll image.
*/
void ScrollPanel::updateScrollView(){
//If a rendered scroll area texture exists, delete it.
if(scrollTexture != 0){
delete scrollTexture;
}
//Calculate the y rectangle of scroll area to draw.
int maxY = 0;
for(unsigned int i = 0; i < interfaceElements.size(); i++){
if(interfaceElements.at(i)->visible){
if(interfaceElements.at(i)->rect.top + interfaceElements.at(i)->rect.height > maxY)
maxY = interfaceElements.at(i)->rect.top + interfaceElements.at(i)->rect.height;
}
}
scrollArea.y = maxY + rect.top + 3;
//Setup scroll bar.
scrollBar.visible = scrollArea.y > rect.height;
if(!scrollBar.visible){
yScroll = 0;
scrollArea.x = rect.width;
}else{
scrollArea.x = rect.width - scrollBar.rect.width + 1;
scrollBar.setSize(10, rect.height, ((float)rect.height / (float)scrollArea.y)*rect.height);
scrollBar.setBarPosition(((float)(yScroll)/((float)scrollArea.y))*((float)rect.height));
}
scrollChanged();
//Create and render scroll area image.
scrollTexture = new sf::RenderTexture();
scrollTexture->create(scrollArea.x, scrollArea.y, true);
scrollTexture->clear(sf::Color::Transparent);
Panel::draw(*scrollTexture, sf::RenderStates::Default);
scrollTexture->display();
scrollSprite.setTexture(scrollTexture->getTexture(), true);
scrollSprite.setPosition(0, 0);
scrollSprite.setTextureRect(sf::IntRect(0, yScroll, rect.width, rect.height));
}
InterfaceElement* ScrollPanel::collisionCheck(int x, int y){
if(!InterfaceElement::collisionCheck(x, y))
return 0;
//Update scroll position if necessary.
if(isScrolling){
yScroll = ((float)(y-rect.top-scrollBar.scrollBar.getSize().y/2)/((float)rect.height))*(float)scrollArea.y;
scrollChanged();
}
if(scrollBar.collisionCheck(x, y)){
return &scrollBar;
}
//Check if collision occurs with any panel elements.
InterfaceElement* scrollViewCollision = Panel::collisionCheck(x, y + yScroll - rect.top);
if(scrollViewCollision)
return scrollViewCollision;
return this;
}
STSimpleEditView::STSimpleEditView(QGraphicsItem *parent) :
QGraphicsObject(parent)
{
m_size=QSize(0,0);
m_backgroundColor=QColor(255,255,255);
m_textColor=QColor(0,0,0);
//qSwap(m_backgroundColor, m_textColor);
m_text="";
m_markPos=0;
m_cursorPos=0;
m_lineNavigationMode=false;
m_nextActionPos=0;
m_actions.clear();
m_layoutedText="";
m_layout=STFont::defaultFont()->layoutString("");
m_scroll=0;
m_caretView=new STCaretView(this);
m_caretView->setSize(QSizeF(2.f,12.f));
m_scrollBar=new STScrollBarView(this);
m_scrollBar->setStyle(STScrollBarView::ClearBlack);
setFlag(ItemIsFocusable);
setFlag(ItemAcceptsInputMethod);
setFlag(ItemClipsChildrenToShape);
setCursor(QCursor(Qt::IBeamCursor));
setCacheMode(DeviceCoordinateCache);
connect(m_scrollBar, SIGNAL(valueChanged()),
this, SLOT(scrollChanged()));
}
