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/*
* Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "AppletManager.h"
#include <AK/QuickSort.h>
#include <LibCore/EventLoop.h>
#include <LibGfx/Painter.h>
#include <WindowServer/MenuManager.h>
namespace WindowServer {
static AppletManager* s_the;
Vector<String> order_vector;
AppletManager::AppletManager()
{
s_the = this;
auto wm_config = Core::ConfigFile::open("/etc/WindowServer.ini");
auto order = wm_config->read_entry("Applet", "Order");
order_vector = order.split(',');
}
AppletManager::~AppletManager()
{
}
AppletManager& AppletManager::the()
{
VERIFY(s_the);
return *s_the;
}
void AppletManager::set_position(const Gfx::IntPoint& position)
{
m_window->move_to(position);
m_window->set_visible(true);
}
void AppletManager::set_hovered_applet(Window* applet)
{
if (m_hovered_applet == applet)
return;
if (m_hovered_applet)
Core::EventLoop::current().post_event(*m_hovered_applet, make<Event>(Event::WindowLeft));
m_hovered_applet = applet;
if (m_hovered_applet)
Core::EventLoop::current().post_event(*m_hovered_applet, make<Event>(Event::WindowEntered));
}
void AppletManager::event(Core::Event& event)
{
if (event.type() == Event::WindowLeft && m_hovered_applet) {
set_hovered_applet(nullptr);
return;
}
if (!is<MouseEvent>(event))
return;
auto& mouse_event = static_cast<MouseEvent&>(event);
for (auto& applet : m_applets) {
if (!applet)
continue;
if (!applet->rect_in_applet_area().contains(mouse_event.position()))
continue;
auto local_event = mouse_event.translated(-applet->rect_in_applet_area().location());
set_hovered_applet(applet);
Core::EventLoop::current().post_event(*applet, make<MouseEvent>(local_event));
return;
}
}
void AppletManager::add_applet(Window& applet)
{
m_applets.append(applet);
// Prune any dead weak pointers from the applet list.
m_applets.remove_all_matching([](auto& entry) {
return entry.is_null();
});
quick_sort(m_applets, [](auto& a, auto& b) {
auto index_a = order_vector.find_first_index(a->title());
auto index_b = order_vector.find_first_index(b->title());
return index_a.value_or(0) > index_b.value_or(0);
});
relayout();
MenuManager::the().refresh();
}
void AppletManager::relayout()
{
constexpr int applet_spacing = 4;
constexpr int applet_window_height = 19;
int total_width = 0;
for (auto& existing_applet : m_applets) {
total_width += max(0, existing_applet->size().width()) + applet_spacing;
}
if (total_width > 0)
total_width -= applet_spacing;
auto right_edge_x = total_width;
for (auto& existing_applet : m_applets) {
auto applet_size = existing_applet->size();
Gfx::IntRect new_applet_rect(right_edge_x - applet_size.width(), 0, applet_size.width(), applet_size.height());
Gfx::IntRect dummy_container_rect(0, 0, 0, applet_window_height);
new_applet_rect.center_vertically_within(dummy_container_rect);
existing_applet->set_rect_in_applet_area(new_applet_rect);
right_edge_x = existing_applet->rect_in_applet_area().x() - applet_spacing;
}
if (!m_window) {
m_window = Window::construct(*this, WindowType::AppletArea);
m_window->set_visible(false);
}
Gfx::IntRect rect { m_window->position(), Gfx::IntSize { total_width, applet_window_height } };
if (m_window->rect() == rect)
return;
m_window->set_rect(rect);
repaint();
WindowManager::the().tell_wms_applet_area_size_changed(rect.size());
}
void AppletManager::repaint()
{
if (!m_window) {
return;
}
auto rect = Gfx::IntRect { { 0, 0 }, m_window->size() };
if (!rect.is_empty()) {
Gfx::Painter painter(*m_window->backing_store());
painter.fill_rect(rect, WindowManager::the().palette().button());
}
}
void AppletManager::did_change_theme()
{
repaint();
}
void AppletManager::remove_applet(Window& applet)
{
m_applets.remove_first_matching([&](auto& entry) {
return &applet == entry.ptr();
});
relayout();
}
void AppletManager::draw()
{
for (auto& applet : m_applets) {
if (!applet)
continue;
draw_applet(*applet);
}
}
void AppletManager::draw_applet(const Window& applet)
{
if (!applet.backing_store())
return;
Gfx::Painter painter(*m_window->backing_store());
Gfx::PainterStateSaver saver(painter);
painter.add_clip_rect(applet.rect_in_applet_area());
painter.fill_rect(applet.rect_in_applet_area(), WindowManager::the().palette().button());
painter.blit(applet.rect_in_applet_area().location(), *applet.backing_store(), applet.backing_store()->rect());
}
void AppletManager::invalidate_applet(const Window& applet, const Gfx::IntRect&)
{
draw_applet(applet);
draw();
// FIXME: Invalidate only the exact rect we've been given.
if (m_window)
m_window->invalidate();
}
}
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