void Widget::SetState( State state ) {
// Do nothing if state wouldn't change.
if( GetState() == state ) {
return;
}
auto old_state = GetState();
// Store the new state.
m_state = state;
auto emit_state_change = false;
// If HandleStateChange() changed the state, do not call observer, will be
// done from there too.
if( GetState() != old_state ) {
HandleStateChange( static_cast<State>( old_state ) );
emit_state_change = true;
}
if( state == State::ACTIVE ) {
GrabFocus( shared_from_this() );
SetActiveWidget( shared_from_this() );
}
else if( old_state == State::ACTIVE ) {
SetActiveWidget( Ptr() );
}
if( emit_state_change ) {
GetSignals().Emit( OnStateChange );
}
}
void Widget::SetState( State state ) {
// Do nothing if state wouldn't change.
if( GetState() == state ) {
return;
}
unsigned char old_state( GetState() );
// Clear the state bits to 0s.
m_bitfield &= static_cast<unsigned char>( 0xf1 );
// Store the new state.
m_bitfield |= static_cast<unsigned char>( state << 1 );
// If HandleStateChange() changed the state, do not call observer, will be
// done from there too.
if( GetState() != old_state ) {
HandleStateChange( static_cast<State>( old_state ) );
GetSignals().Emit( OnStateChange );
}
if( state == ACTIVE ) {
GrabFocus( shared_from_this() );
SetActiveWidget( shared_from_this() );
}
else if( old_state == ACTIVE ) {
SetActiveWidget( Ptr() );
}
}
void ComboBox::HandleMouseMoveEvent( int x, int y ) {
if( m_active ) {
if( m_scrollbar ) {
sf::Event event;
event.type = sf::Event::MouseMoved;
event.mouseMove.x = x - static_cast<int>( GetAllocation().left );
event.mouseMove.y = y - static_cast<int>( GetAllocation().top );
ReleaseModal();
m_scrollbar->SetActiveWidget();
m_scrollbar->HandleEvent( event );
SetActiveWidget();
GrabModal();
sf::FloatRect scrollbar_allocation = m_scrollbar->GetAllocation();
scrollbar_allocation.left += GetAllocation().left;
scrollbar_allocation.top += GetAllocation().top;
if( scrollbar_allocation.contains( static_cast<float>( x ), static_cast<float>( y ) ) ) {
m_highlighted_item = NONE;
Invalidate();
return;
}
}
if( ( x > GetAllocation().left ) && ( x < GetAllocation().left + GetAllocation().width ) ) {
float padding( Context::Get().GetEngine().GetProperty<float>( "ItemPadding", shared_from_this() ) );
const std::string& font_name( Context::Get().GetEngine().GetProperty<std::string>( "FontName", shared_from_this() ) );
unsigned int font_size( Context::Get().GetEngine().GetProperty<unsigned int>( "FontSize", shared_from_this() ) );
const sf::Font& font( *Context::Get().GetEngine().GetResourceManager().GetFont( font_name ) );
IndexType line_y = y;
line_y -= static_cast<int>( GetAllocation().top + GetAllocation().height + padding );
line_y /= static_cast<int>( Context::Get().GetEngine().GetFontLineHeight( font, font_size ) + 2 * padding );
if( line_y < GetItemCount() ) {
if( line_y != m_highlighted_item ) {
Invalidate();
m_highlighted_item = line_y + GetStartItemIndex();
}
}
else {
if( m_highlighted_item != NONE ) {
m_highlighted_item = NONE;
Invalidate();
}
}
}
else {
if( m_highlighted_item != NONE ) {
m_highlighted_item = NONE;
Invalidate();
}
}
}
}
void Widget::SetActiveWidget() {
SetActiveWidget( shared_from_this() );
}
void ComboBox::HandleMouseButtonEvent( sf::Mouse::Button button, bool press, int x, int y ) {
if( ( x == std::numeric_limits<int>::min() ) || ( y == std::numeric_limits<int>::min() ) ) {
return;
}
if( GetState() == State::ACTIVE ) {
if( m_scrollbar ) {
sf::Event event;
event.type = press ? sf::Event::MouseButtonPressed : sf::Event::MouseButtonReleased;
event.mouseButton.button = button;
event.mouseButton.x = x - static_cast<int>( GetAllocation().left );
event.mouseButton.y = y - static_cast<int>( GetAllocation().top );
ReleaseModal();
m_scrollbar->SetActiveWidget();
m_scrollbar->HandleEvent( event );
SetActiveWidget();
GrabModal();
auto scrollbar_allocation = m_scrollbar->GetAllocation();
scrollbar_allocation.left += GetAllocation().left;
scrollbar_allocation.top += GetAllocation().top;
if( scrollbar_allocation.contains( static_cast<float>( x ), static_cast<float>( y ) ) ) {
return;
}
}
if( !press || ( button != sf::Mouse::Left ) ) {
return;
}
auto emit_select = false;
if( m_highlighted_item != NONE ) {
m_active_item = m_highlighted_item;
emit_select = true;
}
m_highlighted_item = NONE;
if( IsMouseInWidget() ) {
SetState( State::PRELIGHT );
}
else {
SetState( State::NORMAL );
}
Invalidate();
if( emit_select ) {
GetSignals().Emit( OnSelect );
}
return;
}
if( press && ( button == sf::Mouse::Left ) && IsMouseInWidget() ) {
m_highlighted_item = NONE;
SetState( State::ACTIVE );
Invalidate();
GetSignals().Emit( OnOpen );
}
}