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LibGUI: Add a GItemView class.

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This is a GAbstractView subclass that implements a icon-based view onto
a GModel. It still need a bunch of work, but it's in basic usable shape.
This commit is contained in:
Andreas Kling 2019-03-23 03:53:51 +01:00
parent 5707d7f547
commit 19fa70c821
16 changed files with 361 additions and 47 deletions
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15
LibGUI/GScrollableWidget.cpp
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@ -39,14 +39,21 @@ void GScrollableWidget::resize_event(GResizeEvent& event)
}
}
Size GScrollableWidget::available_size() const
{
int available_width = width() - m_size_occupied_by_fixed_elements.width() - width_occupied_by_vertical_scrollbar();
int available_height = height() - m_size_occupied_by_fixed_elements.height() - height_occupied_by_horizontal_scrollbar();
return { available_width, available_height };
}
void GScrollableWidget::update_scrollbar_ranges()
{
int available_height = height() - m_size_occupied_by_fixed_elements.height() - height_occupied_by_horizontal_scrollbar();
int excess_height = max(0, m_content_size.height() - available_height);
auto available_size = this->available_size();
int excess_height = max(0, m_content_size.height() - available_size.height());
m_vertical_scrollbar->set_range(0, excess_height);
int available_width = width() - m_size_occupied_by_fixed_elements.width() - width_occupied_by_vertical_scrollbar();
int excess_width = max(0, m_content_size.width() - available_width);
int excess_width = max(0, m_content_size.width() - available_size.width());
m_horizontal_scrollbar->set_range(0, excess_width);
m_vertical_scrollbar->set_big_step(visible_content_rect().height() - m_vertical_scrollbar->step());