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Spreadsheet: Only append new columns/rows every 50ms

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Fixes #5550.
This commit is contained in:
AnotherTest 2021-03-18 20:58:58 +03:30 • committed by Andreas Kling
parent 7191098356
commit 9f8d518e82
2 changed files with 25 additions and 6 deletions
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24
Userland/Applications/Spreadsheet/SpreadsheetView.cpp
View file

@ -69,13 +69,25 @@ void InfinitelyScrollableTableView::did_scroll()
TableView::did_scroll();
auto& vscrollbar = vertical_scrollbar();
auto& hscrollbar = horizontal_scrollbar();
if (vscrollbar.is_visible() && vscrollbar.value() == vscrollbar.max()) {
if (on_reaching_vertical_end)
on_reaching_vertical_end();
if (!m_vertical_scroll_end_timer->is_active()) {
if (vscrollbar.is_visible() && vscrollbar.value() == vscrollbar.max()) {
m_vertical_scroll_end_timer->on_timeout = [&] {
if (on_reaching_vertical_end)
on_reaching_vertical_end();
m_vertical_scroll_end_timer->stop();
};
m_vertical_scroll_end_timer->start(50);
}
}
if (hscrollbar.is_visible() && hscrollbar.value() == hscrollbar.max()) {
if (on_reaching_horizontal_end)
on_reaching_horizontal_end();
if (!m_horizontal_scroll_end_timer->is_active()) {
if (hscrollbar.is_visible() && hscrollbar.value() == hscrollbar.max()) {
m_horizontal_scroll_end_timer->on_timeout = [&] {
if (on_reaching_horizontal_end)
on_reaching_horizontal_end();
m_horizontal_scroll_end_timer->stop();
};
m_horizontal_scroll_end_timer->start(50);
}
}
}

7
Userland/Applications/Spreadsheet/SpreadsheetView.h
View file

@ -86,6 +86,11 @@ public:
Function<void()> on_reaching_horizontal_end;
private:
InfinitelyScrollableTableView()
: m_horizontal_scroll_end_timer(Core::Timer::construct())
, m_vertical_scroll_end_timer(Core::Timer::construct())
{
}
virtual void did_scroll() override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
@ -93,6 +98,8 @@ private:
bool m_should_intercept_drag { false };
bool m_has_committed_to_dragging { false };
GUI::ModelIndex m_starting_selection_index;
RefPtr<Core::Timer> m_horizontal_scroll_end_timer;
RefPtr<Core::Timer> m_vertical_scroll_end_timer;
};
class SpreadsheetView final : public GUI::Widget {