ladybird/Applications/Welcome/main.cpp
Andreas Kling b9b7b2b28a LibCore: Make IODevice::read_line() return a String
Almost everyone using this API actually wanted String instead of a
ByteBuffer anyway, and there were a bunch of slightly different ways
clients would convert to String.

Let's just cut out all the confusion and make it return String. :^)
2020-12-13 11:54:11 +01:00

244 lines
8.4 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "BackgroundWidget.h"
#include "TextWidget.h"
#include "UnuncheckableButton.h"
#include <AK/ByteBuffer.h>
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringBuilder.h>
#include <AK/Vector.h>
#include <LibCore/File.h>
#include <LibGUI/Application.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/ImageWidget.h>
#include <LibGUI/Label.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/StackWidget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Font.h>
#include <stdio.h>
#include <unistd.h>
struct ContentPage {
String menu_name;
String title;
String icon = String::empty();
Vector<String> content;
};
static Optional<Vector<ContentPage>> parse_welcome_file(const String& path)
{
auto file = Core::File::construct(path);
if (!file->open(Core::IODevice::ReadOnly))
return {};
Vector<ContentPage> pages;
StringBuilder current_output_line;
bool started = false;
ContentPage current;
while (file->can_read_line()) {
auto line = file->read_line();
if (line.is_empty()) {
if (!current_output_line.to_string().is_empty())
current.content.append(current_output_line.to_string());
current_output_line.clear();
continue;
}
switch (line[0]) {
case '*':
dbgln("menu_item line:\t{}", line);
if (started)
pages.append(current);
else
started = true;
current = {};
current.menu_name = line.substring(2, line.length() - 2);
break;
case '$':
dbgln("icon line: \t{}", line);
current.icon = line.substring(2, line.length() - 2);
break;
case '>':
dbgln("title line:\t{}", line);
current.title = line.substring(2, line.length() - 2);
break;
case '#':
dbgln("comment line:\t{}", line);
break;
default:
dbgln("content line:\t", line);
if (current_output_line.length() != 0)
current_output_line.append(' ');
current_output_line.append(line);
break;
}
}
if (started) {
current.content.append(current_output_line.to_string());
pages.append(current);
}
return pages;
}
int main(int argc, char** argv)
{
if (pledge("stdio shared_buffer rpath unix cpath fattr", nullptr) < 0) {
perror("pledge");
return 1;
}
auto app = GUI::Application::construct(argc, argv);
if (pledge("stdio shared_buffer rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
if (unveil("/res", "r") < 0) {
perror("unveil");
return 1;
}
unveil(nullptr, nullptr);
Optional<Vector<ContentPage>> _pages = parse_welcome_file("/res/welcome.txt");
if (!_pages.has_value()) {
GUI::MessageBox::show(nullptr, "Could not open Welcome file.", "Welcome", GUI::MessageBox::Type::Error);
return 1;
}
auto pages = _pages.value();
auto window = GUI::Window::construct();
window->set_title("Welcome");
window->resize(640, 360);
window->center_on_screen();
auto& background = window->set_main_widget<BackgroundWidget>();
background.set_fill_with_background_color(false);
background.set_layout<GUI::VerticalBoxLayout>();
background.layout()->set_margins({ 16, 8, 16, 8 });
background.layout()->set_spacing(8);
background.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fill);
//
// header
//
auto& header = background.add<GUI::Label>();
header.set_font(Gfx::Font::load_from_file("/res/fonts/PebbletonBold14.font"));
header.set_text("Welcome to SerenityOS!");
header.set_text_alignment(Gfx::TextAlignment::CenterLeft);
header.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
header.set_preferred_size(0, 30);
//
// main section
//
auto& main_section = background.add<GUI::Widget>();
main_section.set_layout<GUI::HorizontalBoxLayout>();
main_section.layout()->set_margins({ 0, 0, 0, 0 });
main_section.layout()->set_spacing(8);
main_section.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fill);
auto& menu = main_section.add<GUI::Widget>();
menu.set_layout<GUI::VerticalBoxLayout>();
menu.layout()->set_margins({ 0, 0, 0, 0 });
menu.layout()->set_spacing(4);
menu.set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
menu.set_preferred_size(100, 0);
auto& stack = main_section.add<GUI::StackWidget>();
stack.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fill);
bool first = true;
for (auto& page : pages) {
auto& content = stack.add<GUI::Widget>();
content.set_layout<GUI::VerticalBoxLayout>();
content.layout()->set_margins({ 0, 0, 0, 0 });
content.layout()->set_spacing(8);
content.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fill);
auto& title_box = content.add<GUI::Widget>();
title_box.set_layout<GUI::HorizontalBoxLayout>();
title_box.layout()->set_spacing(4);
title_box.set_preferred_size(0, 16);
title_box.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
if (!page.icon.is_empty()) {
auto& icon = title_box.add<GUI::ImageWidget>();
icon.set_preferred_size(16, 16);
icon.set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
icon.load_from_file(page.icon);
}
auto& content_title = title_box.add<GUI::Label>();
content_title.set_font(Gfx::Font::default_bold_font());
content_title.set_text(page.title);
content_title.set_text_alignment(Gfx::TextAlignment::CenterLeft);
content_title.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
content_title.set_preferred_size(0, 10);
for (auto& paragraph : page.content) {
auto& content_text = content.add<TextWidget>();
content_text.set_font(Gfx::Font::default_font());
content_text.set_text(paragraph);
content_text.set_text_alignment(Gfx::TextAlignment::TopLeft);
content_text.set_line_height(12);
content_text.wrap_and_set_height();
}
auto& menu_option = menu.add<UnuncheckableButton>();
menu_option.set_font(Gfx::Font::default_font());
menu_option.set_text(page.menu_name);
menu_option.set_text_alignment(Gfx::TextAlignment::CenterLeft);
menu_option.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
menu_option.set_preferred_size(0, 20);
menu_option.set_checkable(true);
menu_option.set_exclusive(true);
if (first)
menu_option.set_checked(true);
menu_option.on_click = [content = &content, &stack](auto) {
stack.set_active_widget(content);
content->invalidate_layout();
};
first = false;
}
window->show();
return app->exec();
}