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#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <SharedGraphics/GraphicsBitmap.h>
#include <SharedGraphics/Painter.h>
#include <LibGUI/GScrollBar.h>
#include <AK/FileSystemPath.h>
#include "DirectoryView.h"
DirectoryView::DirectoryView(GWidget* parent)
: GWidget(parent)
{
m_directory_icon = GraphicsBitmap::load_from_file("/res/icons/folder16.rgb", { 16, 16 });
m_file_icon = GraphicsBitmap::load_from_file("/res/icons/file16.rgb", { 16, 16 });
m_symlink_icon = GraphicsBitmap::load_from_file("/res/icons/link16.rgb", { 16, 16 });
m_scrollbar = new GScrollBar(Orientation::Vertical, this);
m_scrollbar->set_step(4);
m_scrollbar->set_big_step(30);
m_scrollbar->on_change = [this] (int) {
update();
};
}
DirectoryView::~DirectoryView()
{
}
void DirectoryView::resize_event(GResizeEvent& event)
{
m_scrollbar->set_relative_rect(event.size().width() - m_scrollbar->preferred_size().width(), 0, m_scrollbar->preferred_size().width(), event.size().height());
}
void DirectoryView::open(const String& path)
{
if (m_path == path)
return;
m_path = path;
reload();
if (on_path_change)
on_path_change(m_path);
update();
}
void DirectoryView::reload()
{
DIR* dirp = opendir(m_path.characters());
if (!dirp) {
perror("opendir");
exit(1);
}
m_directories.clear();
m_files.clear();
size_t bytes_in_files = 0;
while (auto* de = readdir(dirp)) {
Entry entry;
entry.name = de->d_name;
struct stat st;
int rc = lstat(String::format("%s/%s", m_path.characters(), de->d_name).characters(), &st);
if (rc < 0) {
perror("lstat");
continue;
}
entry.size = st.st_size;
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
{
if (S_ISDIR(entry.mode))
return *m_directory_icon;
if (S_ISLNK(entry.mode))
return *m_symlink_icon;
return *m_file_icon;
}
static String pretty_byte_size(size_t size)
{
return String::format("%u", size);
}
bool DirectoryView::should_show_size_for(const Entry& entry) const
{
return S_ISREG(entry.mode);
}
Rect DirectoryView::row_rect(int item_index) const
{
return { 0, item_index * item_height(), width(), item_height() };
}
void DirectoryView::mousedown_event(GMouseEvent& event)
{
if (event.button() == GMouseButton::Left) {
for (int i = 0; i < item_count(); ++i) {
if (!row_rect(i).contains(event.position()))
continue;
auto& entry = this->entry(i);
if (entry.is_directory()) {
FileSystemPath new_path(String::format("%s/%s", m_path.characters(), entry.name.characters()));
open(new_path.string());
}
}
}
}
void DirectoryView::paint_event(GPaintEvent&)
{
Painter painter(*this);
painter.translate(0, -m_scrollbar->value());
int horizontal_padding = 5;
int icon_size = 16;
int painted_item_index = 0;
auto process_entries = [&] (const Vector<Entry>& entries) {
for (size_t i = 0; i < entries.size(); ++i, ++painted_item_index) {
auto& entry = entries[i];
int y = painted_item_index * item_height();
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(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))
painter.draw_text(size_rect, pretty_byte_size(entry.size), Painter::TextAlignment::CenterRight, Color::Black);
}
};
process_entries(m_directories);
process_entries(m_files);
Rect unpainted_rect(0, painted_item_index * item_height(), width(), height());
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));
}
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