void ItemBrowserWidget::NextPage(Widget* /*_widget*/)
{
int old_page = page_;
int max_number_items = grid_size_.x * grid_size_.y - 2;
int number_items = static_cast<int>(items_.size()) - page_ * max_number_items;
if(number_items > max_number_items)
page_++;
else
page_ = 0;
PerformItemLayout();
if(page_ != old_page)
OnPageChange(this, old_page, page_);
}
void ItemBrowserWidget::SetPage(int _page)
{
int max_page = GetPageCount() - 1;
int old_page = page_;
page_ = _page;
if(page_ < 0)
page_ = 0;
if(page_ > max_page)
page_ = max_page;
if(page_ != old_page)
OnPageChange(this, old_page, page_);
}
void ItemBrowserWidget::PrevPage(Widget* /*_widget*/)
{
int old_page = page_;
int max_number_items = grid_size_.x * grid_size_.y - 2;
if(page_ > 0)
page_--;
else
{
page_ = (int)items_.size() / max_number_items;
if(items_.size() % max_number_items == 0)
page_--;
}
//Small numbers of items could result in negative page
if(page_ < 0)
page_ = 0;
PerformItemLayout();
if(page_ != old_page)
OnPageChange(this, old_page, page_);
}
void View::SetPage(int pageIdx, bool doLayout)
{
assert(m_doc); // Page cannot be NULL
assert(m_doc->HasPage(pageIdx));
m_pageIdx = pageIdx;
m_currentPage = m_doc->SetDrawingPage(pageIdx);
if (doLayout) {
m_doc->CollectScoreDefs();
// if we once deal with multiple views, it would be better
// to redo the layout only when necessary?
m_currentPage->LayOut();
}
m_currentElement = NULL;
m_currentLayer = NULL;
m_currentMeasure = NULL;
m_currentStaff = NULL;
m_currentSystem = NULL;
OnPageChange();
DoRefresh();
}
