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LibGUI: Make GUI::ScrollBar inherit from AbstractSlider

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This commit is contained in:
Andreas Kling 2020-12-30 15:20:02 +01:00
parent cb67264f61
commit 1215d2a642
6 changed files with 33 additions and 89 deletions
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10
Libraries/LibGUI/ScrollableWidget.cpp
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@ -40,7 +40,7 @@ ScrollableWidget::ScrollableWidget()
m_horizontal_scrollbar = add<ScrollBar>(Orientation::Horizontal);
m_horizontal_scrollbar->set_step(4);
m_horizontal_scrollbar->set_big_step(30);
m_horizontal_scrollbar->set_page_step(30);
m_horizontal_scrollbar->on_change = [this](int) {
did_scroll();
update();
@ -111,18 +111,20 @@ void ScrollableWidget::update_scrollbar_ranges()
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, available_size.height());
m_vertical_scrollbar->set_range(0, excess_height);
m_vertical_scrollbar->set_page_step(available_size.height());
if (should_hide_unnecessary_scrollbars())
m_vertical_scrollbar->set_visible(excess_height > 0);
int excess_width = max(0, m_content_size.width() - available_size.width());
m_horizontal_scrollbar->set_range(0, excess_width, available_size.width());
m_horizontal_scrollbar->set_range(0, excess_width);
m_horizontal_scrollbar->set_page_step(available_size.width());
if (should_hide_unnecessary_scrollbars())
m_horizontal_scrollbar->set_visible(excess_width > 0);
m_vertical_scrollbar->set_big_step(visible_content_rect().height() - m_vertical_scrollbar->step());
m_vertical_scrollbar->set_page_step(visible_content_rect().height() - m_vertical_scrollbar->step());
}
void ScrollableWidget::set_content_size(const Gfx::IntSize& size)