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WindowServer: Add initial support for rendering on multiple screens

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This allows WindowServer to use multiple framebuffer devices and
compose the desktop with any arbitrary layout. Currently, it is assumed
that it is configured contiguous and non-overlapping, but this should
eventually be enforced.

To make rendering efficient, each window now also tracks on which
screens it needs to be rendered. This way we don't have to iterate all
the windows for each screen but instead use the same rendering loop and
then only render to the screen (or screens) that the window actually
uses.
This commit is contained in:
Tom 2021-06-13 06:16:06 -06:00 • committed by Andreas Kling
parent 499c33ae0c
commit 4392da970a
42 changed files with 1127 additions and 563 deletions
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95
Userland/Services/WindowServer/Window.cpp
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@ -174,12 +174,25 @@ bool Window::apply_minimum_size(Gfx::IntRect& rect)
return did_size_clamp;
}
void Window::nudge_into_desktop(bool force_titlebar_visible)
void Window::nudge_into_desktop(Screen* target_screen, bool force_titlebar_visible)
{
Gfx::IntRect arena = WindowManager::the().arena_rect_for_type(type());
if (!target_screen) {
// If no explicit target screen was supplied,
// guess based on the current frame rectangle
target_screen = &Screen::closest_to_rect(rect());
}
Gfx::IntRect arena = WindowManager::the().arena_rect_for_type(*target_screen, type());
auto min_visible = 1;
if (type() == WindowType::Normal)
switch (type()) {
case WindowType::Normal:
min_visible = 30;
break;
case WindowType::Desktop:
set_rect(arena);
return;
default:
break;
}
// Push the frame around such that at least `min_visible` pixels of the *frame* are in the desktop rect.
auto old_frame_rect = frame().rect();
@ -203,6 +216,7 @@ void Window::nudge_into_desktop(bool force_titlebar_visible)
width(),
height(),
};
set_rect(new_window_rect);
}
@ -684,7 +698,7 @@ void Window::handle_window_menu_action(WindowMenuAction action)
WindowManager::the().move_to_front_and_make_active(*this);
break;
case WindowMenuAction::Move:
WindowManager::the().start_window_move(*this, Screen::the().cursor_location());
WindowManager::the().start_window_move(*this, ScreenInput::the().cursor_location());
break;
case WindowMenuAction::Close:
request_close();
@ -746,7 +760,7 @@ void Window::set_fullscreen(bool fullscreen)
Gfx::IntRect new_window_rect = m_rect;
if (m_fullscreen) {
m_saved_nonfullscreen_rect = m_rect;
new_window_rect = Screen::the().rect();
new_window_rect = Screen::main().rect(); // TODO: We should support fullscreen on any screen
} else if (!m_saved_nonfullscreen_rect.is_empty()) {
new_window_rect = m_saved_nonfullscreen_rect;
}
@ -755,56 +769,73 @@ void Window::set_fullscreen(bool fullscreen)
set_rect(new_window_rect);
}
Gfx::IntRect Window::tiled_rect(WindowTileType tiled) const
Gfx::IntRect Window::tiled_rect(Screen* target_screen, WindowTileType tiled) const
{
if (!target_screen) {
// If no explicit target screen was supplied,
// guess based on the current frame rectangle
target_screen = &Screen::closest_to_rect(frame().rect());
}
VERIFY(tiled != WindowTileType::None);
int frame_width = (m_frame.rect().width() - m_rect.width()) / 2;
int titlebar_height = m_frame.titlebar_rect().height();
int menu_height = WindowManager::the().maximized_window_rect(*this).y();
int max_height = WindowManager::the().maximized_window_rect(*this).height();
auto maximized_rect_relative_to_window_screen = WindowManager::the().maximized_window_rect(*this, true);
int menu_height = maximized_rect_relative_to_window_screen.y();
int max_height = maximized_rect_relative_to_window_screen.height();
auto& screen = *target_screen;
auto screen_location = screen.rect().location();
switch (tiled) {
case WindowTileType::Left:
return Gfx::IntRect(0,
menu_height,
Screen::the().width() / 2 - frame_width,
max_height);
screen.width() / 2 - frame_width,
max_height)
.translated(screen_location);
case WindowTileType::Right:
return Gfx::IntRect(Screen::the().width() / 2 + frame_width,
return Gfx::IntRect(screen.width() / 2 + frame_width,
menu_height,
Screen::the().width() / 2 - frame_width,
max_height);
screen.width() / 2 - frame_width,
max_height)
.translated(screen_location);
case WindowTileType::Top:
return Gfx::IntRect(0,
menu_height,
Screen::the().width(),
(max_height - titlebar_height) / 2 - frame_width);
screen.width(),
(max_height - titlebar_height) / 2 - frame_width)
.translated(screen_location);
case WindowTileType::Bottom:
return Gfx::IntRect(0,
menu_height + (titlebar_height + max_height) / 2 + frame_width,
Screen::the().width(),
(max_height - titlebar_height) / 2 - frame_width);
screen.width(),
(max_height - titlebar_height) / 2 - frame_width)
.translated(screen_location);
case WindowTileType::TopLeft:
return Gfx::IntRect(0,
menu_height,
Screen::the().width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width);
screen.width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width)
.translated(screen_location);
case WindowTileType::TopRight:
return Gfx::IntRect(Screen::the().width() / 2 + frame_width,
return Gfx::IntRect(screen.width() / 2 + frame_width,
menu_height,
Screen::the().width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width);
screen.width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width)
.translated(screen_location);
case WindowTileType::BottomLeft:
return Gfx::IntRect(0,
menu_height + (titlebar_height + max_height) / 2 + frame_width,
Screen::the().width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width);
screen.width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width)
.translated(screen_location);
case WindowTileType::BottomRight:
return Gfx::IntRect(Screen::the().width() / 2 + frame_width,
return Gfx::IntRect(screen.width() / 2 + frame_width,
menu_height + (titlebar_height + max_height) / 2 + frame_width,
Screen::the().width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width);
screen.width() / 2 - frame_width,
(max_height - titlebar_height) / 2 - frame_width)
.translated(screen_location);
default:
VERIFY_NOT_REACHED();
}
@ -831,7 +862,7 @@ bool Window::set_untiled(Optional<Gfx::IntPoint> fixed_point)
return true;
}
void Window::set_tiled(WindowTileType tiled)
void Window::set_tiled(Screen* screen, WindowTileType tiled)
{
VERIFY(tiled != WindowTileType::None);
@ -845,7 +876,7 @@ void Window::set_tiled(WindowTileType tiled)
m_untiled_rect = m_rect;
m_tiled = tiled;
set_rect(tiled_rect(tiled));
set_rect(tiled_rect(screen, tiled));
Core::EventLoop::current().post_event(*this, make<ResizeEvent>(m_rect));
}
@ -861,11 +892,11 @@ void Window::recalculate_rect()
bool send_event = true;
if (m_tiled != WindowTileType::None) {
set_rect(tiled_rect(m_tiled));
set_rect(tiled_rect(nullptr, m_tiled));
} else if (is_maximized()) {
set_rect(WindowManager::the().maximized_window_rect(*this));
} else if (type() == WindowType::Desktop) {
set_rect(WindowManager::the().desktop_rect());
set_rect(WindowManager::the().arena_rect_for_type(Screen::main(), WindowType::Desktop));
} else {
send_event = false;
}
@ -953,7 +984,7 @@ bool Window::is_descendant_of(Window& window) const
return false;
}
Optional<HitTestResult> Window::hit_test(Gfx::IntPoint const& position, bool include_frame) const
Optional<HitTestResult> Window::hit_test(Gfx::IntPoint const& position, bool include_frame)
{
if (!m_hit_testing_enabled)
return {};