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#include <LibDraw/Font.h>
#include <LibDraw/GraphicsBitmap.h>
#include <LibDraw/StylePainter.h>
#include <WindowServer/WSEvent.h>
#include <WindowServer/WSScreen.h>
#include <WindowServer/WSWindowManager.h>
#include <WindowServer/WSWindowSwitcher.h>
static WSWindowSwitcher* s_the;
WSWindowSwitcher& WSWindowSwitcher::the()
{
ASSERT(s_the);
return *s_the;
}
WSWindowSwitcher::WSWindowSwitcher()
{
s_the = this;
}
WSWindowSwitcher::~WSWindowSwitcher()
{
}
void WSWindowSwitcher::set_visible(bool visible)
{
if (m_visible == visible)
return;
m_visible = visible;
WSWindowManager::the().recompute_occlusions();
if (m_switcher_window)
m_switcher_window->set_visible(visible);
if (!m_visible)
return;
refresh();
}
WSWindow* WSWindowSwitcher::selected_window()
{
if (m_selected_index < 0 || m_selected_index >= m_windows.size())
return nullptr;
return m_windows[m_selected_index].ptr();
}
void WSWindowSwitcher::on_key_event(const WSKeyEvent& event)
{
if (event.type() == WSEvent::KeyUp) {
if (event.key() == Key_Logo) {
if (auto* window = selected_window())
WSWindowManager::the().move_to_front_and_make_active(*window);
WSWindowManager::the().set_highlight_window(nullptr);
hide();
}
return;
}
if (event.key() != Key_Tab) {
WSWindowManager::the().set_highlight_window(nullptr);
hide();
return;
}
ASSERT(!m_windows.is_empty());
m_selected_index = (m_selected_index + 1) % m_windows.size();
ASSERT(m_selected_index < m_windows.size());
auto* highlight_window = m_windows.at(m_selected_index).ptr();
ASSERT(highlight_window);
WSWindowManager::the().set_highlight_window(highlight_window);
draw();
WSWindowManager::the().invalidate(m_rect);
}
void WSWindowSwitcher::draw()
{
auto& palette = WSWindowManager::the().palette();
Painter painter(*m_switcher_window->backing_store());
painter.fill_rect({ {}, m_rect.size() }, palette.window());
painter.draw_rect({ {}, m_rect.size() }, palette.threed_shadow2());
for (int index = 0; index < m_windows.size(); ++index) {
auto& window = *m_windows.at(index);
Rect item_rect {
padding(),
padding() + index * item_height(),
m_rect.width() - padding() * 2,
item_height()
};
Color text_color;
Color rect_text_color;
if (index == m_selected_index) {
painter.fill_rect(item_rect, palette.selection());
text_color = palette.selection_text();
rect_text_color = palette.threed_shadow1();
} else {
text_color = palette.window_text();
rect_text_color = palette.threed_shadow2();
}
item_rect.shrink(item_padding(), 0);
Rect thumbnail_rect = { item_rect.location().translated(0, 5), { thumbnail_width(), thumbnail_height() } };
if (window.backing_store()) {
painter.draw_scaled_bitmap(thumbnail_rect, *window.backing_store(), window.backing_store()->rect());
StylePainter::paint_frame(painter, thumbnail_rect.inflated(4, 4), palette, FrameShape::Container, FrameShadow::Sunken, 2);
}
Rect icon_rect = { thumbnail_rect.bottom_right().translated(-window.icon().width(), -window.icon().height()), { window.icon().width(), window.icon().height() } };
painter.fill_rect(icon_rect, palette.window());
painter.blit(icon_rect.location(), window.icon(), window.icon().rect());
painter.draw_text(item_rect.translated(thumbnail_width() + 12, 0), window.title(), WSWindowManager::the().window_title_font(), TextAlignment::CenterLeft, text_color);
painter.draw_text(item_rect, window.rect().to_string(), TextAlignment::CenterRight, rect_text_color);
}
}
void WSWindowSwitcher::refresh()
{
auto& wm = WSWindowManager::the();
WSWindow* selected_window = nullptr;
if (m_selected_index > 0 && m_windows[m_selected_index])
selected_window = m_windows[m_selected_index].ptr();
if (!selected_window)
selected_window = wm.highlight_window() ? wm.highlight_window() : wm.active_window();
m_windows.clear();
m_selected_index = 0;
int window_count = 0;
int longest_title_width = 0;
wm.for_each_visible_window_of_type_from_front_to_back(WSWindowType::Normal, [&](WSWindow& window) {
++window_count;
longest_title_width = max(longest_title_width, wm.font().width(window.title()));
if (selected_window == &window)
m_selected_index = m_windows.size();
m_windows.append(window.make_weak_ptr());
return IterationDecision::Continue;
},
true);
if (m_windows.is_empty()) {
hide();
return;
}
int space_for_window_rect = 180;
m_rect.set_width(thumbnail_width() + longest_title_width + space_for_window_rect + padding() * 2 + item_padding() * 2);
m_rect.set_height(window_count * item_height() + padding() * 2);
m_rect.center_within(WSScreen::the().rect());
if (!m_switcher_window)
m_switcher_window = WSWindow::construct(*this, WSWindowType::WindowSwitcher);
m_switcher_window->set_rect(m_rect);
draw();
}
void WSWindowSwitcher::refresh_if_needed()
{
if (m_visible) {
refresh();
WSWindowManager::the().invalidate(m_rect);
}
}
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