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ladybird/Userland/Applications/ImageViewer/main.cpp
Sam Atkins 44ca55aaf8 LibFileSystemAccessClient+Userland: Return file paths as ByteStrings 
Where it was straightforward to do so, I've updated the users to also
use ByteStrings for their file paths, but most of them have a temporary
String::from_byte_string() call instead.
2024-01-29 23:14:39 +00:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Mohsan Ali <mohsan0073@gmail.com>
* Copyright (c) 2023, Caoimhe Byrne <caoimhebyrne06@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "MainWidget.h"
#include "ViewWidget.h"
#include <AK/URL.h>
#include <LibConfig/Client.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/System.h>
#include <LibDesktop/Launcher.h>
#include <LibFileSystemAccessClient/Client.h>
#include <LibGUI/Action.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/Application.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Clipboard.h>
#include <LibGUI/Desktop.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/Label.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Menubar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Toolbar.h>
#include <LibGUI/ToolbarContainer.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Palette.h>
#include <LibGfx/Rect.h>
#include <LibMain/Main.h>
#include <serenity.h>
#include <string.h>
using namespace ImageViewer;
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio recvfd sendfd rpath wpath cpath unix thread"));
auto app = TRY(GUI::Application::create(arguments));
Config::pledge_domains({ "ImageViewer", "WindowManager" });
app->set_config_domain("ImageViewer"_string);
TRY(Desktop::Launcher::add_allowed_handler_with_any_url("/bin/ImageViewer"));
TRY(Desktop::Launcher::add_allowed_handler_with_only_specific_urls("/bin/Help", { URL::create_with_file_scheme("/usr/share/man/man1/Applications/ImageViewer.md") }));
TRY(Desktop::Launcher::seal_allowlist());
// FIXME: Use unveil when we solve the issue with ViewWidget::load_files_from_directory, an explanation is given in ViewWidget.cpp
// TRY(Core::System::unveil("/tmp/session/%sid/portal/filesystemaccess", "rw"));
// TRY(Core::System::unveil("/tmp/session/%sid/portal/image", "rw"));
// TRY(Core::System::unveil("/res", "r"));
// TRY(Core::System::unveil(nullptr, nullptr));
auto app_icon = GUI::Icon::default_icon("filetype-image"sv);
StringView path;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(path, "The image file to be displayed.", "file", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
auto window = GUI::Window::construct();
window->set_double_buffering_enabled(true);
window->resize(300, 200);
window->set_icon(app_icon.bitmap_for_size(16));
window->set_title("Image Viewer");
auto root_widget = window->set_main_widget<MainWidget>();
auto& toolbar_container = root_widget->add<GUI::ToolbarContainer>();
auto& main_toolbar = toolbar_container.add<GUI::Toolbar>();
auto& widget = root_widget->add<ViewWidget>();
widget.on_scale_change = [&](float scale) {
if (!widget.image()) {
window->set_title("Image Viewer");
return;
}
window->set_title(ByteString::formatted("{} {} {}% - Image Viewer", widget.path(), widget.image()->size().to_byte_string(), (int)(scale * 100)));
if (!widget.scaled_for_first_image()) {
widget.set_scaled_for_first_image(true);
widget.resize_window();
}
};
widget.on_drop = [&](auto& event) {
if (!event.mime_data().has_urls())
return;
auto urls = event.mime_data().urls();
if (urls.is_empty())
return;
window->move_to_front();
auto path = urls.first().serialize_path();
auto result = FileSystemAccessClient::Client::the().request_file_read_only_approved(window, path);
if (result.is_error())
return;
auto value = result.release_value();
widget.open_file(MUST(String::from_byte_string(value.filename())), value.stream());
for (size_t i = 1; i < urls.size(); ++i) {
Desktop::Launcher::open(URL::create_with_file_scheme(urls[i].serialize_path().characters()), "/bin/ImageViewer");
}
};
widget.on_doubleclick = [&] {
window->set_fullscreen(!window->is_fullscreen());
toolbar_container.set_visible(!window->is_fullscreen());
widget.set_frame_style(window->is_fullscreen() ? Gfx::FrameStyle::NoFrame : Gfx::FrameStyle::SunkenContainer);
};
// Actions
auto open_action = GUI::CommonActions::make_open_action(
[&](auto&) {
FileSystemAccessClient::OpenFileOptions options {
.window_title = "Open Image"sv,
.allowed_file_types = Vector { GUI::FileTypeFilter::image_files(), GUI::FileTypeFilter::all_files() },
};
auto result = FileSystemAccessClient::Client::the().open_file(window, options);
if (result.is_error())
return;
auto value = result.release_value();
widget.open_file(MUST(String::from_byte_string(value.filename())), value.stream());
});
auto delete_action = GUI::CommonActions::make_delete_action(
[&](auto&) {
auto path = widget.path();
if (path.is_empty())
return;
auto msgbox_result = GUI::MessageBox::show(window,
ByteString::formatted("Are you sure you want to delete {}?", path),
"Confirm Deletion"sv,
GUI::MessageBox::Type::Warning,
GUI::MessageBox::InputType::OKCancel);
if (msgbox_result == GUI::MessageBox::ExecResult::Cancel)
return;
auto unlinked_or_error = Core::System::unlink(widget.path());
if (unlinked_or_error.is_error()) {
GUI::MessageBox::show(window,
ByteString::formatted("unlink({}) failed: {}", path, unlinked_or_error.error()),
"Delete Failed"sv,
GUI::MessageBox::Type::Error);
return;
}
widget.clear();
});
auto quit_action = GUI::CommonActions::make_quit_action(
[&](auto&) {
app->quit();
});
auto rotate_counterclockwise_action = GUI::CommonActions::make_rotate_counterclockwise_action([&](auto&) {
widget.rotate(Gfx::RotationDirection::CounterClockwise);
});
auto rotate_clockwise_action = GUI::CommonActions::make_rotate_clockwise_action([&](auto&) {
widget.rotate(Gfx::RotationDirection::Clockwise);
});
auto vertical_flip_action = GUI::Action::create("Flip &Vertically", { Mod_None, Key_V }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/edit-flip-vertical.png"sv)),
[&](auto&) {
widget.flip(Gfx::Orientation::Vertical);
});
auto horizontal_flip_action = GUI::Action::create("Flip &Horizontally", { Mod_None, Key_H }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/edit-flip-horizontal.png"sv)),
[&](auto&) {
widget.flip(Gfx::Orientation::Horizontal);
});
auto desktop_wallpaper_action = GUI::Action::create("Set as Desktop &Wallpaper", TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-display-settings.png"sv)),
[&](auto&) {
if (!GUI::Desktop::the().set_wallpaper(widget.image()->bitmap(GUI::Desktop::the().rect().size()).release_value_but_fixme_should_propagate_errors(), widget.path())) {
GUI::MessageBox::show(window,
ByteString::formatted("set_wallpaper({}) failed", widget.path()),
"Could not set wallpaper"sv,
GUI::MessageBox::Type::Error);
}
});
auto go_first_action = GUI::Action::create("&Go to First", { Mod_None, Key_Home }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/go-first.png"sv)),
[&](auto&) {
widget.navigate(ViewWidget::Directions::First);
});
auto go_back_action = GUI::Action::create("Go to &Previous", { Mod_None, Key_Left }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/go-back.png"sv)),
[&](auto&) {
widget.navigate(ViewWidget::Directions::Back);
});
auto go_forward_action = GUI::Action::create("Go to &Next", { Mod_None, Key_Right }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"sv)),
[&](auto&) {
widget.navigate(ViewWidget::Directions::Forward);
});
auto go_last_action = GUI::Action::create("Go to &Last", { Mod_None, Key_End }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/go-last.png"sv)),
[&](auto&) {
widget.navigate(ViewWidget::Directions::Last);
});
auto full_screen_action = GUI::CommonActions::make_fullscreen_action(
[&](auto&) {
widget.on_doubleclick();
});
auto zoom_in_action = GUI::CommonActions::make_zoom_in_action(
[&](auto&) {
widget.set_scale(widget.scale() * 1.44f);
},
window);
auto reset_zoom_action = GUI::CommonActions::make_reset_zoom_action(
[&](auto&) {
widget.set_scale(1.f);
},
window);
auto fit_image_to_view_action = GUI::Action::create(
"Fit Image To &View", TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/fit-image-to-view.png"sv)), [&](auto&) {
widget.fit_content_to_view();
});
auto zoom_out_action = GUI::CommonActions::make_zoom_out_action(
[&](auto&) {
widget.set_scale(widget.scale() / 1.44f);
},
window);
auto hide_show_toolbar_action = GUI::Action::create_checkable("&Toolbar", { Mod_Ctrl, Key_T },
[&](auto& action) {
toolbar_container.set_visible(action.is_checked());
});
hide_show_toolbar_action->set_checked(true);
auto copy_action = GUI::CommonActions::make_copy_action([&](auto&) {
if (widget.image())
GUI::Clipboard::the().set_bitmap(*widget.image()->bitmap({}).release_value_but_fixme_should_propagate_errors());
});
auto nearest_neighbor_action = GUI::Action::create_checkable("&Nearest Neighbor", [&](auto&) {
widget.set_scaling_mode(Gfx::Painter::ScalingMode::NearestNeighbor);
});
nearest_neighbor_action->set_checked(true);
auto smooth_pixels_action = GUI::Action::create_checkable("&Smooth Pixels", [&](auto&) {
widget.set_scaling_mode(Gfx::Painter::ScalingMode::SmoothPixels);
});
auto bilinear_action = GUI::Action::create_checkable("&Bilinear", [&](auto&) {
widget.set_scaling_mode(Gfx::Painter::ScalingMode::BilinearBlend);
});
auto box_sampling_action = GUI::Action::create_checkable("B&ox Sampling", [&](auto&) {
widget.set_scaling_mode(Gfx::Painter::ScalingMode::BoxSampling);
});
widget.on_image_change = [&](Image const* image) {
bool should_enable_image_actions = (image != nullptr);
bool should_enable_forward_actions = (widget.is_next_available() && should_enable_image_actions);
bool should_enable_backward_actions = (widget.is_previous_available() && should_enable_image_actions);
delete_action->set_enabled(should_enable_image_actions);
rotate_counterclockwise_action->set_enabled(should_enable_image_actions);
rotate_clockwise_action->set_enabled(should_enable_image_actions);
vertical_flip_action->set_enabled(should_enable_image_actions);
horizontal_flip_action->set_enabled(should_enable_image_actions);
desktop_wallpaper_action->set_enabled(should_enable_image_actions);
go_first_action->set_enabled(should_enable_backward_actions);
go_back_action->set_enabled(should_enable_backward_actions);
go_forward_action->set_enabled(should_enable_forward_actions);
go_last_action->set_enabled(should_enable_forward_actions);
zoom_in_action->set_enabled(should_enable_image_actions);
reset_zoom_action->set_enabled(should_enable_image_actions);
zoom_out_action->set_enabled(should_enable_image_actions);
if (!should_enable_image_actions) {
window->set_title("Image Viewer");
}
};
main_toolbar.add_action(open_action);
main_toolbar.add_action(delete_action);
main_toolbar.add_separator();
main_toolbar.add_action(go_first_action);
main_toolbar.add_action(go_back_action);
main_toolbar.add_action(go_forward_action);
main_toolbar.add_action(go_last_action);
main_toolbar.add_separator();
main_toolbar.add_action(zoom_in_action);
main_toolbar.add_action(reset_zoom_action);
main_toolbar.add_action(zoom_out_action);
auto file_menu = window->add_menu("&File"_string);
file_menu->add_action(open_action);
file_menu->add_action(delete_action);
file_menu->add_separator();
file_menu->add_recent_files_list([&](auto& action) {
auto path = action.text();
auto result = FileSystemAccessClient::Client::the().request_file_read_only_approved(window, path);
if (result.is_error())
return;
auto value = result.release_value();
widget.open_file(MUST(String::from_byte_string(value.filename())), value.stream());
});
file_menu->add_action(quit_action);
auto image_menu = window->add_menu("&Image"_string);
image_menu->add_action(rotate_counterclockwise_action);
image_menu->add_action(rotate_clockwise_action);
image_menu->add_action(vertical_flip_action);
image_menu->add_action(horizontal_flip_action);
image_menu->add_separator();
image_menu->add_action(desktop_wallpaper_action);
auto navigate_menu = window->add_menu("&Navigate"_string);
navigate_menu->add_action(go_first_action);
navigate_menu->add_action(go_back_action);
navigate_menu->add_action(go_forward_action);
navigate_menu->add_action(go_last_action);
auto view_menu = window->add_menu("&View"_string);
view_menu->add_action(full_screen_action);
view_menu->add_separator();
view_menu->add_action(zoom_in_action);
view_menu->add_action(reset_zoom_action);
view_menu->add_action(fit_image_to_view_action);
view_menu->add_action(zoom_out_action);
view_menu->add_separator();
auto scaling_mode_menu = view_menu->add_submenu("&Scaling Mode"_string);
scaling_mode_menu->set_icon(TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/scale.png"sv)));
auto scaling_mode_group = make<GUI::ActionGroup>();
scaling_mode_group->set_exclusive(true);
scaling_mode_group->add_action(*nearest_neighbor_action);
scaling_mode_group->add_action(*smooth_pixels_action);
scaling_mode_group->add_action(*bilinear_action);
scaling_mode_group->add_action(*box_sampling_action);
scaling_mode_menu->add_action(nearest_neighbor_action);
scaling_mode_menu->add_action(smooth_pixels_action);
scaling_mode_menu->add_action(bilinear_action);
scaling_mode_menu->add_action(box_sampling_action);
view_menu->add_separator();
view_menu->add_action(hide_show_toolbar_action);
auto help_menu = window->add_menu("&Help"_string);
help_menu->add_action(GUI::CommonActions::make_command_palette_action(window));
help_menu->add_action(GUI::CommonActions::make_help_action([](auto&) {
Desktop::Launcher::open(URL::create_with_file_scheme("/usr/share/man/man1/Applications/ImageViewer.md"), "/bin/Help");
}));
help_menu->add_action(GUI::CommonActions::make_about_action("Image Viewer"_string, app_icon, window));
window->show();
// We must do this here and not any earlier, as we need a visible window to call FileSystemAccessClient::Client::request_file_read_only_approved();
if (path != nullptr) {
auto result = FileSystemAccessClient::Client::the().request_file_read_only_approved(window, path);
if (result.is_error())
return 1;
auto value = result.release_value();
widget.open_file(MUST(String::from_byte_string(value.filename())), value.stream());
} else {
widget.clear();
}
return app->exec();
}
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