bool ScrollBox::Update(const Point2i &mousePosition,
const Point2i &lastMousePosition)
{
// Force redrawing if we are scrolling and the mouse has moved
if (start_drag_offset!=NO_DRAG && mousePosition!=lastMousePosition) {
//NeedRedrawing();
}
bool redraw = need_redrawing;
bool updated = Widget::Update(mousePosition, lastMousePosition);
need_redrawing = redraw;
bool has_scrollbar = HasScrollBar();
m_up->SetVisible(has_scrollbar);
m_down->SetVisible(has_scrollbar);
updated |= WidgetList::Update(mousePosition, lastMousePosition);
if (has_scrollbar) {
GetMainWindow().BoxColor(GetScrollTrack(), dark_gray_color);
const Rectanglei& thumb = GetScrollThumb();
bool over = scroll_mode==SCROLL_MODE_THUMB || thumb.Contains(mousePosition);
GetMainWindow().BoxColor(thumb, over ? white_color : gray_color);
}
return updated;
}
void ScrollBox::__Update(const Point2i & mousePosition,
const Point2i & /*lastMousePosition*/)
{
// update position of items because of dragging
if (HasScrollBar() && scroll_mode!=SCROLL_MODE_NONE) {
int max_offset = GetMaxOffset();
int new_offset = offset;
if (scroll_mode == SCROLL_MODE_THUMB) {
Point2i track_pos = GetScrollTrackPos();
int height = GetTrackHeight();
new_offset = start_drag_offset +
((mousePosition.y - start_drag_y) * (size.y+max_offset))/height;
} else if (scroll_mode == SCROLL_MODE_DRAG) {
// Act as if the scroll corresponds to bringing the starting point to the
// current point
new_offset = start_drag_offset + start_drag_y - mousePosition.y;
}
if (new_offset < 0)
new_offset = 0;
if (new_offset > max_offset)
new_offset = max_offset;
if (new_offset != offset) {
offset = new_offset;
Pack();
}
}
}
Widget * ScrollBox::Click(const Point2i & mousePosition, uint button)
{
if (!Contains(mousePosition)) {
return NULL;
}
start_drag_offset = NO_DRAG;
scroll_mode = SCROLL_MODE_NONE;
if (HasScrollBar() && Mouse::IS_CLICK_BUTTON(button)) {
start_drag_y = mousePosition.y;
if (GetScrollThumb().Contains(mousePosition)) {
if (!offset) {
// Not yet set, derive from mouse position
const Rectanglei& scroll_track = GetScrollTrack();
int height = scroll_track.GetSizeY();
offset = ( (mousePosition.y - scroll_track.GetPositionY()) * (size.y+GetMaxOffset())
+ (height/2) ) / height;
}
start_drag_offset = offset;
scroll_mode = SCROLL_MODE_THUMB;
} else if (vbox->Contains(mousePosition)) {
// The click occurred inside the vbox, this means scrolling
scroll_mode = SCROLL_MODE_DRAG;
start_drag_offset = offset;
}
}
return WidgetList::Click(mousePosition, button);
}
void CDuiItemBox::EnsureVisible(CDuiWindow *pItem)
{
if(!HasScrollBar(TRUE)) return;
DUIASSERT(pItem);
CRect rcItem;
pItem->GetRect(&rcItem);
int yOffset=0;
if(rcItem.bottom>m_rcWindow.bottom)
{
yOffset=rcItem.bottom-m_rcWindow.bottom;
}
else if(rcItem.top<m_rcWindow.top)
{
yOffset=rcItem.top-m_rcWindow.top;
}
SetScrollPos(TRUE,GetScrollPos(TRUE)+yOffset,TRUE);
}
AutoHideBar::AutoHideBar()
{
internalname = "autohidebar";
ctrl = NULL;
SetStyle(DockCtrlChStyle::StyleDefault());
HasScrollBar(false);
HasButtons(false);
HasIcons(true);
Draggable(false);
SetSize(0);
childcount = 0;
TabInterface::WhenHighlight = THISBACK(OnHighlight);
TabInterface::WhenClose = THISBACK(OnClose);
popup.WhenEnter = THISBACK2(MouseEnter, Point(0, 0), 0);
popup.WhenLeave = THISBACK(MouseLeave);
}
Widget * ScrollBox::ClickUp(const Point2i & mousePosition, uint button)
{
ScrollMode old_mode = scroll_mode;
start_drag_offset = NO_DRAG;
scroll_mode = SCROLL_MODE_NONE;
if (!vbox->GetFirstWidget()) {
return NULL;
}
// Handle the click up as a widget click only if we weren't dragging
// If we click up close to where we clicked down, it will however register
// as a click and not a scrolling
if (vbox->Contains(mousePosition) &&
(start_drag_y==NO_DRAG || abs(start_drag_y-mousePosition.y)<2)) {
Widget *w = vbox->ClickUp(mousePosition, button);
if (w) {
SetFocusOn(w);
return w;
}
// The click was not handled, let's try using it for scrolling
}
if (HasScrollBar()) {
bool is_click = Mouse::IS_CLICK_BUTTON(button);
int max_offset = GetMaxOffset();
int new_offset = offset;
// The event involves the scrollbar or its buttons
if ((button == SDL_BUTTON_WHEELDOWN && Contains(mousePosition)) ||
(is_click && m_down->Contains(mousePosition))) {
// bottom button
new_offset = offset+SCROLL_SPEED;
} else if ((button == SDL_BUTTON_WHEELUP && Contains(mousePosition)) ||
(is_click && m_up->Contains(mousePosition))) {
// top button
new_offset = offset-SCROLL_SPEED;
} else if (is_click) {
// Was it released after a drag operation?
if (old_mode!=SCROLL_MODE_NONE /*&& start_drag_y != mousePosition.y*/)
return this;
const Rectanglei& scroll_track = GetScrollTrack();
if (scroll_track.Contains(mousePosition)) {
// Set this as new scroll thumb position
int height = scroll_track.GetSizeY();
new_offset = ((mousePosition.y - scroll_track.GetPositionY()) * (size.y+max_offset)
+ (height/2)) / scroll_track.GetSizeY();
}
}
// Clip new offset to correct value
if (new_offset > max_offset)
new_offset = max_offset;
if (new_offset < 0)
new_offset = 0;
if (new_offset != offset) {
offset = new_offset;
Pack();
NeedRedrawing();
}
return this;
}
return NULL;
}
