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LibGUI: Start adding an automatic widget layout system.

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My needs are really quite simple, so I'm just going to add what I need
as I go along. The first thing I needed was a simple box layout with
widgets being able to say whether they prefer fixed or fill for both
their vertical and horizontal sizes.

I also made a simple GStatusBar so FileManager can show how many bytes
worth of files are in the current directory.
This commit is contained in:
Andreas Kling 2019-02-10 11:07:13 +01:00
parent 2cf1dd5b6f
commit 2def3d8d3f
22 changed files with 411 additions and 29 deletions
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21
Applications/FileManager/DirectoryView.cpp
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@ -53,6 +53,8 @@ void DirectoryView::reload()
}
m_directories.clear();
m_files.clear();
size_t bytes_in_files = 0;
while (auto* de = readdir(dirp)) {
Entry entry;
entry.name = de->d_name;
@ -66,10 +68,21 @@ void DirectoryView::reload()
entry.mode = st.st_mode;
auto& entries = S_ISDIR(st.st_mode) ? m_directories : m_files;
entries.append(move(entry));
if (S_ISREG(entry.mode))
bytes_in_files += st.st_size;
}
closedir(dirp);
int excess_height = max(0, (item_count() * item_height()) - height());
m_scrollbar->set_range(0, excess_height);
set_status_message(String::format("%d item%s (%u byte%s)",
item_count(),
item_count() != 1 ? "s" : "",
bytes_in_files,
bytes_in_files != 1 ? "s" : ""));
}
const GraphicsBitmap& DirectoryView::icon_for(const Entry& entry) const
@ -128,7 +141,7 @@ void DirectoryView::paint_event(GPaintEvent&)
Rect icon_rect(horizontal_padding, y, icon_size, item_height());
Rect name_rect(icon_rect.right() + horizontal_padding, y, 100, item_height());
Rect size_rect(name_rect.right() + horizontal_padding, y, 64, item_height());
painter.fill_rect(row_rect(painted_item_index), i % 2 ? Color::LightGray : Color::White);
painter.fill_rect(row_rect(painted_item_index), i % 2 ? Color(210, 210, 210) : Color::White);
painter.blit_with_alpha(icon_rect.location(), icon_for(entry), { 0, 0, icon_size, icon_size });
painter.draw_text(name_rect, entry.name, Painter::TextAlignment::CenterLeft, Color::Black);
if (should_show_size_for(entry))
@ -143,3 +156,9 @@ void DirectoryView::paint_event(GPaintEvent&)
unpainted_rect.intersect(rect());
painter.fill_rect(unpainted_rect, Color::White);
}
void DirectoryView::set_status_message(String&& message)
{
if (on_status_message)
on_status_message(move(message));
}