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/*
* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "PresenterWidget.h"
#include "Presentation.h"
#include <LibCore/MimeData.h>
#include <LibFileSystemAccessClient/Client.h>
#include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/Event.h>
#include <LibGUI/Icon.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Painter.h>
PresenterWidget::PresenterWidget()
{
set_min_size(200, 120);
set_fill_with_background_color(true);
m_web_view = add<WebView::OutOfProcessWebView>();
m_web_view->set_frame_thickness(0);
m_web_view->set_scrollbars_enabled(false);
m_web_view->set_focus_policy(GUI::FocusPolicy::NoFocus);
m_web_view->set_content_scales_to_viewport(true);
}
void PresenterWidget::resize_event(GUI::ResizeEvent& event)
{
Widget::resize_event(event);
if (!m_current_presentation)
return;
auto normative_size = m_current_presentation->normative_size().to_type<float>();
float widget_ratio = static_cast<float>(event.size().width()) / static_cast<float>(event.size().height());
float wh_ratio = normative_size.width() / normative_size.height();
Gfx::IntRect rect;
if (widget_ratio >= wh_ratio) {
rect.set_width(static_cast<int>(ceilf(static_cast<float>(event.size().height()) * wh_ratio)));
rect.set_height(event.size().height());
} else {
float hw_ratio = normative_size.height() / normative_size.width();
rect.set_width(event.size().width());
rect.set_height(static_cast<int>(ceilf(static_cast<float>(event.size().width()) * hw_ratio)));
}
m_web_view->set_relative_rect(rect.centered_within(this->rect()));
}
ErrorOr<void> PresenterWidget::initialize_menubar()
{
auto* window = this->window();
// Set up the menu bar.
auto file_menu = TRY(window->try_add_menu("&File"));
auto open_action = GUI::CommonActions::make_open_action([this](auto&) {
auto response = FileSystemAccessClient::Client::the().open_file(this->window());
if (response.is_error())
return;
this->set_file(response.value().filename());
});
TRY(file_menu->try_add_action(open_action));
TRY(file_menu->try_add_separator());
TRY(file_menu->try_add_action(GUI::CommonActions::make_quit_action([](auto&) {
GUI::Application::the()->quit();
})));
auto presentation_menu = TRY(window->try_add_menu("&Presentation"));
m_next_slide_action = GUI::Action::create("&Next", { KeyCode::Key_Right }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"sv)), [this](auto&) {
if (m_current_presentation) {
m_current_presentation->next_frame();
update_web_view();
update_slides_actions();
}
});
m_previous_slide_action = GUI::Action::create("&Previous", { KeyCode::Key_Left }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/go-back.png"sv)), [this](auto&) {
if (m_current_presentation) {
m_current_presentation->previous_frame();
update_web_view();
update_slides_actions();
}
});
m_present_from_first_slide_action = GUI::Action::create("Present From First &Slide", { KeyCode::Key_F5 }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/play.png"sv)), [this](auto&) {
if (m_current_presentation) {
m_current_presentation->go_to_first_slide();
update_web_view();
}
this->window()->set_fullscreen(true);
});
TRY(presentation_menu->try_add_action(*m_next_slide_action));
TRY(presentation_menu->try_add_action(*m_previous_slide_action));
TRY(presentation_menu->try_add_action(*m_present_from_first_slide_action));
auto view_menu = TRY(window->try_add_menu("&View"));
m_full_screen_action = GUI::Action::create("Toggle &Full Screen", { KeyModifier::Mod_Shift, KeyCode::Key_F5 }, { KeyCode::Key_F11 }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/fullscreen.png"sv)), [this](auto&) {
auto* window = this->window();
window->set_fullscreen(!window->is_fullscreen());
});
m_resize_to_fit_content_action = GUI::Action::create("Resize to Fit &Content", { KeyModifier::Mod_Alt, KeyCode::Key_C }, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/scale.png"sv)), [this](auto&) {
if (m_current_presentation) {
auto presentation_size = m_current_presentation->normative_size();
auto* window = this->window();
window->resize(window->size().match_aspect_ratio(presentation_size.aspect_ratio(), Orientation::Horizontal));
}
});
TRY(view_menu->try_add_action(*m_full_screen_action));
TRY(view_menu->try_add_action(*m_resize_to_fit_content_action));
update_slides_actions();
auto help_menu = TRY(window->try_add_menu("&Help"));
TRY(help_menu->try_add_action(GUI::CommonActions::make_about_action("Presenter", GUI::Icon::default_icon("app-presenter"sv))));
return {};
}
void PresenterWidget::update_web_view()
{
m_web_view->run_javascript(DeprecatedString::formatted("goto({}, {})", m_current_presentation->current_slide_number(), m_current_presentation->current_frame_in_slide_number()));
}
void PresenterWidget::update_slides_actions()
{
if (m_current_presentation) {
m_next_slide_action->set_enabled(m_current_presentation->has_a_next_frame());
m_previous_slide_action->set_enabled(m_current_presentation->has_a_previous_frame());
m_full_screen_action->set_enabled(true);
m_present_from_first_slide_action->set_enabled(true);
} else {
m_next_slide_action->set_enabled(false);
m_previous_slide_action->set_enabled(false);
m_full_screen_action->set_enabled(false);
m_present_from_first_slide_action->set_enabled(false);
}
}
void PresenterWidget::set_file(StringView file_name)
{
auto presentation = Presentation::load_from_file(file_name);
if (presentation.is_error()) {
GUI::MessageBox::show_error(window(), DeprecatedString::formatted("The presentation \"{}\" could not be loaded.\n{}", file_name, presentation.error()));
} else {
m_current_presentation = presentation.release_value();
window()->set_title(DeprecatedString::formatted(title_template, m_current_presentation->title(), m_current_presentation->author()));
set_min_size(m_current_presentation->normative_size());
m_web_view->load_html(MUST(m_current_presentation->render()), "presenter://slide.html"sv);
update_slides_actions();
}
}
void PresenterWidget::keydown_event(GUI::KeyEvent& event)
{
if (event.key() == Key_Escape && window()->is_fullscreen())
window()->set_fullscreen(false);
// Alternate shortcuts for forward and backward
switch (event.key()) {
case Key_Down:
case Key_PageDown:
case Key_Space:
case Key_N:
case Key_Return:
m_next_slide_action->activate();
event.accept();
break;
case Key_Up:
case Key_Backspace:
case Key_PageUp:
case Key_P:
m_previous_slide_action->activate();
event.accept();
break;
default:
event.ignore();
break;
}
}
void PresenterWidget::paint_event(GUI::PaintEvent& event)
{
GUI::Painter painter(*this);
painter.clear_rect(event.rect(), Gfx::Color::Black);
}
void PresenterWidget::second_paint_event(GUI::PaintEvent& event)
{
if (!m_current_presentation)
return;
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.draw_text(m_web_view->relative_rect(), m_current_presentation->current_slide().title(), Gfx::TextAlignment::BottomCenter);
}
void PresenterWidget::drag_enter_event(GUI::DragEvent& event)
{
auto const& mime_types = event.mime_types();
if (mime_types.contains_slow("text/uri-list"))
event.accept();
}
void PresenterWidget::drop_event(GUI::DropEvent& event)
{
event.accept();
if (event.mime_data().has_urls()) {
auto urls = event.mime_data().urls();
if (urls.is_empty())
return;
window()->move_to_front();
set_file(urls.first().path());
}
}
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