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ladybird/Userland/Services/WindowServer/WindowManager.cpp
Andreas Kling 4895f46d8c WindowServer: Make various functions take MouseEvent by const reference 
Some paths of the mouse event processing code will upgrade the event
from a regular MouseDown to a MouseDoubleClick. That's why we were
passing `MouseEvent&` everywhere.

For the paths that don't need to do this, passing `MouseEvent const&`
reduces the cognitive burden a bit, so let's do that.
2021-06-18 17:55:41 +02:00

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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "WindowManager.h"
#include "Compositor.h"
#include "EventLoop.h"
#include "Menu.h"
#include "Screen.h"
#include "Window.h"
#include <AK/Debug.h>
#include <AK/StdLibExtras.h>
#include <AK/Vector.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/CharacterBitmap.h>
#include <LibGfx/Font.h>
#include <LibGfx/StylePainter.h>
#include <LibGfx/SystemTheme.h>
#include <WindowServer/AppletManager.h>
#include <WindowServer/Button.h>
#include <WindowServer/ClientConnection.h>
#include <WindowServer/Cursor.h>
#include <WindowServer/WindowClientEndpoint.h>
namespace WindowServer {
static WindowManager* s_the;
WindowManager& WindowManager::the()
{
VERIFY(s_the);
return *s_the;
}
WindowManager::WindowManager(Gfx::PaletteImpl const& palette)
: m_palette(palette)
{
s_the = this;
reload_config();
Compositor::the().did_construct_window_manager({});
}
WindowManager::~WindowManager()
{
}
NonnullRefPtr<Cursor> WindowManager::get_cursor(String const& name)
{
static auto const s_default_cursor_path = "/res/cursors/arrow.x2y2.png";
auto path = m_config->read_entry("Cursor", name, s_default_cursor_path);
auto gb = Gfx::Bitmap::load_from_file(path, compositor_icon_scale());
if (gb)
return Cursor::create(*gb, path);
return Cursor::create(*Gfx::Bitmap::load_from_file(s_default_cursor_path), s_default_cursor_path);
}
void WindowManager::reload_config()
{
m_config = Core::ConfigFile::open("/etc/WindowServer.ini");
m_double_click_speed = m_config->read_num_entry("Input", "DoubleClickSpeed", 250);
m_hidden_cursor = get_cursor("Hidden");
m_arrow_cursor = get_cursor("Arrow");
m_hand_cursor = get_cursor("Hand");
m_help_cursor = get_cursor("Help");
m_resize_horizontally_cursor = get_cursor("ResizeH");
m_resize_vertically_cursor = get_cursor("ResizeV");
m_resize_diagonally_tlbr_cursor = get_cursor("ResizeDTLBR");
m_resize_diagonally_bltr_cursor = get_cursor("ResizeDBLTR");
m_resize_column_cursor = get_cursor("ResizeColumn");
m_resize_row_cursor = get_cursor("ResizeRow");
m_i_beam_cursor = get_cursor("IBeam");
m_disallowed_cursor = get_cursor("Disallowed");
m_move_cursor = get_cursor("Move");
m_drag_cursor = get_cursor("Drag");
m_wait_cursor = get_cursor("Wait");
m_crosshair_cursor = get_cursor("Crosshair");
WindowFrame::reload_config();
}
Gfx::Font const& WindowManager::font() const
{
return Gfx::FontDatabase::default_font();
}
Gfx::Font const& WindowManager::window_title_font() const
{
return Gfx::FontDatabase::default_font().bold_variant();
}
bool WindowManager::set_resolution(int width, int height, int scale)
{
bool success = Compositor::the().set_resolution(width, height, scale);
ClientConnection::for_each_client([&](ClientConnection& client) {
client.notify_about_new_screen_rect(Screen::the().rect());
});
if (success) {
m_window_stack.for_each_window([](Window& window) {
window.recalculate_rect();
return IterationDecision::Continue;
});
}
if (m_config) {
if (success) {
dbgln("Saving resolution: {} @ {}x to config file at {}", Gfx::IntSize(width, height), scale, m_config->filename());
m_config->write_num_entry("Screen", "Width", width);
m_config->write_num_entry("Screen", "Height", height);
m_config->write_num_entry("Screen", "ScaleFactor", scale);
m_config->sync();
} else {
dbgln("Saving fallback resolution: {} @1x to config file at {}", resolution(), m_config->filename());
m_config->write_num_entry("Screen", "Width", resolution().width());
m_config->write_num_entry("Screen", "Height", resolution().height());
m_config->write_num_entry("Screen", "ScaleFactor", 1);
m_config->sync();
}
}
return success;
}
Gfx::IntSize WindowManager::resolution() const
{
return Screen::the().size();
}
void WindowManager::set_acceleration_factor(double factor)
{
Screen::the().set_acceleration_factor(factor);
dbgln("Saving acceleration factor {} to config file at {}", factor, m_config->filename());
m_config->write_entry("Mouse", "AccelerationFactor", String::formatted("{}", factor));
m_config->sync();
}
void WindowManager::set_scroll_step_size(unsigned step_size)
{
Screen::the().set_scroll_step_size(step_size);
dbgln("Saving scroll step size {} to config file at {}", step_size, m_config->filename());
m_config->write_entry("Mouse", "ScrollStepSize", String::number(step_size));
m_config->sync();
}
void WindowManager::set_double_click_speed(int speed)
{
VERIFY(speed >= double_click_speed_min && speed <= double_click_speed_max);
m_double_click_speed = speed;
dbgln("Saving double-click speed {} to config file at {}", speed, m_config->filename());
m_config->write_entry("Input", "DoubleClickSpeed", String::number(speed));
m_config->sync();
}
int WindowManager::double_click_speed() const
{
return m_double_click_speed;
}
int WindowManager::scale_factor() const
{
return Screen::the().scale_factor();
}
void WindowManager::add_window(Window& window)
{
bool is_first_window = m_window_stack.is_empty();
m_window_stack.add(window);
if (window.is_fullscreen()) {
Core::EventLoop::current().post_event(window, make<ResizeEvent>(Screen::the().rect()));
window.set_rect(Screen::the().rect());
}
if (window.type() != WindowType::Desktop || is_first_window)
set_active_window(&window);
if (m_switcher.is_visible() && window.type() != WindowType::WindowSwitcher)
m_switcher.refresh();
Compositor::the().invalidate_occlusions();
window.invalidate(true, true);
tell_wms_window_state_changed(window);
}
void WindowManager::move_to_front_and_make_active(Window& window)
{
auto move_window_to_front = [&](Window& wnd, bool make_active, bool make_input) {
if (wnd.is_accessory()) {
auto* parent = wnd.parent_window();
do_move_to_front(*parent, true, false);
make_active = false;
for (auto& accessory_window : parent->accessory_windows()) {
if (accessory_window && accessory_window.ptr() != &wnd)
do_move_to_front(*accessory_window, false, false);
}
}
do_move_to_front(wnd, make_active, make_input);
};
// If a window that is currently blocked by a modal child is being
// brought to the front, bring the entire stack of modal windows
// to the front and activate the modal window. Also set the
// active input window to that same window (which would pull
// active input from any accessory window)
for_each_window_in_modal_stack(window, [&](auto& w, bool is_stack_top) {
move_window_to_front(w, is_stack_top, is_stack_top);
return IterationDecision::Continue;
});
Compositor::the().invalidate_occlusions();
}
void WindowManager::do_move_to_front(Window& window, bool make_active, bool make_input)
{
m_window_stack.move_to_front(window);
if (make_active)
set_active_window(&window, make_input);
if (m_switcher.is_visible()) {
m_switcher.refresh();
if (!window.is_accessory()) {
m_switcher.select_window(window);
set_highlight_window(&window);
}
}
for (auto& child_window : window.child_windows()) {
if (child_window)
do_move_to_front(*child_window, make_active, make_input);
}
}
void WindowManager::remove_window(Window& window)
{
m_window_stack.remove(window);
auto* active = active_window();
auto* active_input = active_input_window();
if (active == &window || active_input == &window || (active && window.is_descendant_of(*active)) || (active_input && active_input != active && window.is_descendant_of(*active_input)))
pick_new_active_window(&window);
Compositor::the().invalidate_screen(window.frame().render_rect());
if (m_switcher.is_visible() && window.type() != WindowType::WindowSwitcher)
m_switcher.refresh();
Compositor::the().invalidate_occlusions();
for_each_window_manager([&window](WMClientConnection& conn) {
if (conn.window_id() < 0 || !(conn.event_mask() & WMEventMask::WindowRemovals))
return IterationDecision::Continue;
if (!window.is_internal() && !window.is_modal())
conn.async_window_removed(conn.window_id(), window.client_id(), window.window_id());
return IterationDecision::Continue;
});
}
void WindowManager::greet_window_manager(WMClientConnection& conn)
{
if (conn.window_id() < 0)
return;
m_window_stack.for_each_window([&](Window& other_window) {
//if (conn.window_id() != other_window.window_id()) {
tell_wm_about_window(conn, other_window);
tell_wm_about_window_icon(conn, other_window);
//}
return IterationDecision::Continue;
});
if (auto* applet_area_window = AppletManager::the().window())
tell_wms_applet_area_size_changed(applet_area_window->size());
}
void WindowManager::tell_wm_about_window(WMClientConnection& conn, Window& window)
{
if (conn.window_id() < 0)
return;
if (!(conn.event_mask() & WMEventMask::WindowStateChanges))
return;
if (window.is_internal())
return;
auto* parent = window.parent_window();
conn.async_window_state_changed(conn.window_id(), window.client_id(), window.window_id(), parent ? parent->client_id() : -1, parent ? parent->window_id() : -1, window.is_active(), window.is_minimized(), window.is_modal_dont_unparent(), window.is_frameless(), (i32)window.type(), window.computed_title(), window.rect(), window.progress());
}
void WindowManager::tell_wm_about_window_rect(WMClientConnection& conn, Window& window)
{
if (conn.window_id() < 0)
return;
if (!(conn.event_mask() & WMEventMask::WindowRectChanges))
return;
if (window.is_internal())
return;
conn.async_window_rect_changed(conn.window_id(), window.client_id(), window.window_id(), window.rect());
}
void WindowManager::tell_wm_about_window_icon(WMClientConnection& conn, Window& window)
{
if (conn.window_id() < 0)
return;
if (!(conn.event_mask() & WMEventMask::WindowIconChanges))
return;
if (window.is_internal())
return;
conn.async_window_icon_bitmap_changed(conn.window_id(), window.client_id(), window.window_id(), window.icon().to_shareable_bitmap());
}
void WindowManager::tell_wms_window_state_changed(Window& window)
{
for_each_window_manager([&](WMClientConnection& conn) {
tell_wm_about_window(conn, window);
return IterationDecision::Continue;
});
}
void WindowManager::tell_wms_window_icon_changed(Window& window)
{
for_each_window_manager([&](WMClientConnection& conn) {
tell_wm_about_window_icon(conn, window);
return IterationDecision::Continue;
});
}
void WindowManager::tell_wms_window_rect_changed(Window& window)
{
for_each_window_manager([&](WMClientConnection& conn) {
tell_wm_about_window_rect(conn, window);
return IterationDecision::Continue;
});
}
void WindowManager::tell_wms_applet_area_size_changed(Gfx::IntSize const& size)
{
for_each_window_manager([&](WMClientConnection& conn) {
if (conn.window_id() < 0)
return IterationDecision::Continue;
conn.async_applet_area_size_changed(conn.window_id(), size);
return IterationDecision::Continue;
});
}
void WindowManager::tell_wms_super_key_pressed()
{
for_each_window_manager([](WMClientConnection& conn) {
if (conn.window_id() < 0)
return IterationDecision::Continue;
conn.async_super_key_pressed(conn.window_id());
return IterationDecision::Continue;
});
}
static bool window_type_has_title(WindowType type)
{
return type == WindowType::Normal || type == WindowType::ToolWindow;
}
void WindowManager::notify_modified_changed(Window& window)
{
if (m_switcher.is_visible())
m_switcher.refresh();
tell_wms_window_state_changed(window);
}
void WindowManager::notify_title_changed(Window& window)
{
if (!window_type_has_title(window.type()))
return;
dbgln_if(WINDOWMANAGER_DEBUG, "[WM] Window({}) title set to '{}'", &window, window.title());
if (m_switcher.is_visible())
m_switcher.refresh();
tell_wms_window_state_changed(window);
}
void WindowManager::notify_modal_unparented(Window& window)
{
if (window.type() != WindowType::Normal)
return;
dbgln_if(WINDOWMANAGER_DEBUG, "[WM] Window({}) was unparented", &window);
if (m_switcher.is_visible())
m_switcher.refresh();
tell_wms_window_state_changed(window);
}
void WindowManager::notify_rect_changed(Window& window, Gfx::IntRect const& old_rect, Gfx::IntRect const& new_rect)
{
dbgln_if(RESIZE_DEBUG, "[WM] Window({}) rect changed {} -> {}", &window, old_rect, new_rect);
if (m_switcher.is_visible() && window.type() != WindowType::WindowSwitcher)
m_switcher.refresh();
tell_wms_window_rect_changed(window);
if (window.type() == WindowType::Applet)
AppletManager::the().relayout();
MenuManager::the().refresh();
reevaluate_hovered_window(&window);
}
void WindowManager::notify_opacity_changed(Window&)
{
Compositor::the().invalidate_occlusions();
}
void WindowManager::notify_minimization_state_changed(Window& window)
{
tell_wms_window_state_changed(window);
if (window.client())
window.client()->async_window_state_changed(window.window_id(), window.is_minimized(), window.is_occluded());
if (window.is_active() && window.is_minimized())
pick_new_active_window(&window);
}
void WindowManager::notify_occlusion_state_changed(Window& window)
{
if (window.client())
window.client()->async_window_state_changed(window.window_id(), window.is_minimized(), window.is_occluded());
}
void WindowManager::notify_progress_changed(Window& window)
{
tell_wms_window_state_changed(window);
}
bool WindowManager::pick_new_active_window(Window* previous_active)
{
bool new_window_picked = false;
Window* first_candidate = nullptr;
m_window_stack.for_each_visible_window_from_front_to_back([&](Window& candidate) {
if (candidate.type() != WindowType::Normal && candidate.type() != WindowType::ToolWindow)
return IterationDecision::Continue;
if (candidate.is_destroyed())
return IterationDecision::Continue;
if (previous_active != first_candidate)
first_candidate = &candidate;
if ((!previous_active && !candidate.is_accessory()) || (previous_active && !candidate.is_accessory_of(*previous_active))) {
set_active_window(&candidate);
new_window_picked = true;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
if (!new_window_picked) {
set_active_window(first_candidate);
new_window_picked = first_candidate != nullptr;
}
return new_window_picked;
}
void WindowManager::start_window_move(Window& window, Gfx::IntPoint const& origin)
{
MenuManager::the().close_everyone();
dbgln_if(MOVE_DEBUG, "[WM] Begin moving Window({})", &window);
move_to_front_and_make_active(window);
m_move_window = window;
m_move_window->set_default_positioned(false);
m_move_origin = origin;
m_move_window_origin = window.position();
window.invalidate(true, true);
}
void WindowManager::start_window_move(Window& window, MouseEvent const& event)
{
start_window_move(window, event.position());
}
void WindowManager::start_window_resize(Window& window, Gfx::IntPoint const& position, MouseButton button)
{
MenuManager::the().close_everyone();
move_to_front_and_make_active(window);
constexpr ResizeDirection direction_for_hot_area[3][3] = {
{ ResizeDirection::UpLeft, ResizeDirection::Up, ResizeDirection::UpRight },
{ ResizeDirection::Left, ResizeDirection::None, ResizeDirection::Right },
{ ResizeDirection::DownLeft, ResizeDirection::Down, ResizeDirection::DownRight },
};
Gfx::IntRect outer_rect = window.frame().rect();
if (!outer_rect.contains(position)) {
// FIXME: This used to be an VERIFY but crashing WindowServer over this seems silly.
dbgln("FIXME: !outer_rect.contains(position): outer_rect={}, position={}", outer_rect, position);
}
int window_relative_x = position.x() - outer_rect.x();
int window_relative_y = position.y() - outer_rect.y();
int hot_area_row = min(2, window_relative_y / (outer_rect.height() / 3));
int hot_area_column = min(2, window_relative_x / (outer_rect.width() / 3));
m_resize_direction = direction_for_hot_area[hot_area_row][hot_area_column];
if (m_resize_direction == ResizeDirection::None) {
VERIFY(!m_resize_window);
return;
}
dbgln_if(RESIZE_DEBUG, "[WM] Begin resizing Window({})", &window);
m_resizing_mouse_button = button;
m_resize_window = window;
m_resize_origin = position;
m_resize_window_original_rect = window.rect();
m_active_input_tracking_window = nullptr;
window.invalidate(true, true);
if (hot_area_row == 0 || hot_area_column == 0) {
m_resize_window->set_default_positioned(false);
}
}
void WindowManager::start_window_resize(Window& window, MouseEvent const& event)
{
start_window_resize(window, event.position(), event.button());
}
bool WindowManager::process_ongoing_window_move(MouseEvent& event)
{
if (!m_move_window)
return false;
if (event.type() == Event::MouseUp && event.button() == MouseButton::Left) {
dbgln_if(MOVE_DEBUG, "[WM] Finish moving Window({})", m_move_window);
m_move_window->invalidate(true, true);
if (m_move_window->is_resizable()) {
process_event_for_doubleclick(*m_move_window, event);
if (event.type() == Event::MouseDoubleClick) {
dbgln_if(DOUBLECLICK_DEBUG, "[WM] Click up became doubleclick!");
m_move_window->set_maximized(!m_move_window->is_maximized());
}
}
m_move_window = nullptr;
return true;
}
if (event.type() == Event::MouseMove) {
if constexpr (MOVE_DEBUG) {
dbgln("[WM] Moving, origin: {}, now: {}", m_move_origin, event.position());
if (m_move_window->is_maximized())
dbgln(" [!] The window is still maximized. Not moving yet.");
}
const int tiling_deadzone = 10;
const int secondary_deadzone = 2;
auto desktop = desktop_rect();
if (m_move_window->is_maximized()) {
auto pixels_moved_from_start = event.position().pixels_moved(m_move_origin);
if (pixels_moved_from_start > 5) {
// dbgln("[WM] de-maximizing window");
m_move_origin = event.position();
if (m_move_origin.y() <= secondary_deadzone + desktop.top())
return true;
m_move_window->set_maximized(false, event.position());
m_move_window_origin = m_move_window->position();
}
} else {
bool is_resizable = m_move_window->is_resizable();
auto pixels_moved_from_start = event.position().pixels_moved(m_move_origin);
if (is_resizable && event.x() <= tiling_deadzone) {
if (event.y() <= tiling_deadzone + desktop.top())
m_move_window->set_tiled(WindowTileType::TopLeft);
else if (event.y() >= desktop.height() - tiling_deadzone)
m_move_window->set_tiled(WindowTileType::BottomLeft);
else
m_move_window->set_tiled(WindowTileType::Left);
} else if (is_resizable && event.x() >= Screen::the().width() - tiling_deadzone) {
if (event.y() <= tiling_deadzone + desktop.top())
m_move_window->set_tiled(WindowTileType::TopRight);
else if (event.y() >= desktop.height() - tiling_deadzone)
m_move_window->set_tiled(WindowTileType::BottomRight);
else
m_move_window->set_tiled(WindowTileType::Right);
} else if (is_resizable && event.y() <= secondary_deadzone + desktop.top()) {
m_move_window->set_tiled(WindowTileType::Top);
} else if (is_resizable && event.y() >= desktop.bottom() - secondary_deadzone) {
m_move_window->set_tiled(WindowTileType::Bottom);
} else if (m_move_window->tiled() == WindowTileType::None) {
Gfx::IntPoint pos = m_move_window_origin.translated(event.position() - m_move_origin);
m_move_window->set_position_without_repaint(pos);
// "Bounce back" the window if it would end up too far outside the screen.
// If the user has let go of Mod_Super, maybe they didn't intentionally press it to begin with. Therefore, refuse to go into a state where knowledge about super-drags is necessary.
bool force_titlebar_visible = !(m_keyboard_modifiers & Mod_Super);
m_move_window->nudge_into_desktop(force_titlebar_visible);
} else if (pixels_moved_from_start > 5) {
m_move_window->set_untiled(event.position());
m_move_origin = event.position();
m_move_window_origin = m_move_window->position();
}
}
}
return true;
}
bool WindowManager::process_ongoing_window_resize(MouseEvent const& event)
{
if (!m_resize_window)
return false;
if (event.type() == Event::MouseUp && event.button() == m_resizing_mouse_button) {
dbgln_if(RESIZE_DEBUG, "[WM] Finish resizing Window({})", m_resize_window);
auto max_rect = maximized_window_rect(*m_resize_window);
if (event.y() > max_rect.bottom()) {
dbgln_if(RESIZE_DEBUG, "Should Maximize vertically");
m_resize_window->set_vertically_maximized();
m_resize_window = nullptr;
m_resizing_mouse_button = MouseButton::None;
return true;
}
Core::EventLoop::current().post_event(*m_resize_window, make<ResizeEvent>(m_resize_window->rect()));
m_resize_window->invalidate(true, true);
m_resize_window = nullptr;
m_resizing_mouse_button = MouseButton::None;
return true;
}
if (event.type() != Event::MouseMove)
return true;
int diff_x = event.x() - m_resize_origin.x();
int diff_y = event.y() - m_resize_origin.y();
int change_w = 0;
int change_h = 0;
switch (m_resize_direction) {
case ResizeDirection::DownRight:
change_w = diff_x;
change_h = diff_y;
break;
case ResizeDirection::Right:
change_w = diff_x;
break;
case ResizeDirection::UpRight:
change_w = diff_x;
change_h = -diff_y;
break;
case ResizeDirection::Up:
change_h = -diff_y;
break;
case ResizeDirection::UpLeft:
change_w = -diff_x;
change_h = -diff_y;
break;
case ResizeDirection::Left:
change_w = -diff_x;
break;
case ResizeDirection::DownLeft:
change_w = -diff_x;
change_h = diff_y;
break;
case ResizeDirection::Down:
change_h = diff_y;
break;
default:
VERIFY_NOT_REACHED();
}
auto new_rect = m_resize_window_original_rect;
// First, size the new rect.
new_rect.set_width(new_rect.width() + change_w);
new_rect.set_height(new_rect.height() + change_h);
m_resize_window->apply_minimum_size(new_rect);
if (!m_resize_window->size_increment().is_null()) {
int horizontal_incs = (new_rect.width() - m_resize_window->base_size().width()) / m_resize_window->size_increment().width();
new_rect.set_width(m_resize_window->base_size().width() + horizontal_incs * m_resize_window->size_increment().width());
int vertical_incs = (new_rect.height() - m_resize_window->base_size().height()) / m_resize_window->size_increment().height();
new_rect.set_height(m_resize_window->base_size().height() + vertical_incs * m_resize_window->size_increment().height());
}
if (m_resize_window->resize_aspect_ratio().has_value()) {
auto& ratio = m_resize_window->resize_aspect_ratio().value();
auto base_size = m_resize_window->base_size();
if (abs(change_w) > abs(change_h)) {
new_rect.set_height(base_size.height() + (new_rect.width() - base_size.width()) * ratio.height() / ratio.width());
} else {
new_rect.set_width(base_size.width() + (new_rect.height() - base_size.height()) * ratio.width() / ratio.height());
}
}
// Second, set its position so that the sides of the window
// that end up moving are the same ones as the user is dragging,
// no matter which part of the logic above caused us to decide
// to resize by this much.
switch (m_resize_direction) {
case ResizeDirection::DownRight:
case ResizeDirection::Right:
case ResizeDirection::Down:
break;
case ResizeDirection::Left:
case ResizeDirection::Up:
case ResizeDirection::UpLeft:
new_rect.set_right_without_resize(m_resize_window_original_rect.right());
new_rect.set_bottom_without_resize(m_resize_window_original_rect.bottom());
break;
case ResizeDirection::UpRight:
new_rect.set_bottom_without_resize(m_resize_window_original_rect.bottom());
break;
case ResizeDirection::DownLeft:
new_rect.set_right_without_resize(m_resize_window_original_rect.right());
break;
default:
VERIFY_NOT_REACHED();
}
if (m_resize_window->rect() == new_rect)
return true;
dbgln_if(RESIZE_DEBUG, "[WM] Resizing, original: {}, now: {}", m_resize_window_original_rect, new_rect);
m_resize_window->set_rect(new_rect);
Core::EventLoop::current().post_event(*m_resize_window, make<ResizeEvent>(new_rect));
return true;
}
bool WindowManager::process_ongoing_drag(MouseEvent& event)
{
if (!m_dnd_client)
return false;
if (event.type() == Event::MouseMove) {
// We didn't let go of the drag yet, see if we should send some drag move events..
m_window_stack.for_each_visible_window_from_front_to_back([&](Window& window) {
if (!window.rect().contains(event.position()))
return IterationDecision::Continue;
event.set_drag(true);
event.set_mime_data(*m_dnd_mime_data);
deliver_mouse_event(window, event, false);
return IterationDecision::Break;
});
}
if (!(event.type() == Event::MouseUp && event.button() == MouseButton::Left))
return true;
if (auto* window = m_window_stack.window_at(event.position())) {
m_dnd_client->async_drag_accepted();
if (window->client()) {
auto translated_event = event.translated(-window->position());
window->client()->async_drag_dropped(window->window_id(), translated_event.position(), m_dnd_text, m_dnd_mime_data->all_data());
}
} else {
m_dnd_client->async_drag_cancelled();
}
end_dnd_drag();
return true;
}
void WindowManager::set_cursor_tracking_button(Button* button)
{
m_cursor_tracking_button = button;
}
auto WindowManager::DoubleClickInfo::metadata_for_button(MouseButton button) const -> ClickMetadata const&
{
switch (button) {
case MouseButton::Left:
return m_left;
case MouseButton::Right:
return m_right;
case MouseButton::Middle:
return m_middle;
case MouseButton::Back:
return m_back;
case MouseButton::Forward:
return m_forward;
default:
VERIFY_NOT_REACHED();
}
}
auto WindowManager::DoubleClickInfo::metadata_for_button(MouseButton button) -> ClickMetadata&
{
switch (button) {
case MouseButton::Left:
return m_left;
case MouseButton::Right:
return m_right;
case MouseButton::Middle:
return m_middle;
case MouseButton::Back:
return m_back;
case MouseButton::Forward:
return m_forward;
default:
VERIFY_NOT_REACHED();
}
}
bool WindowManager::is_considered_doubleclick(MouseEvent const& event, DoubleClickInfo::ClickMetadata const& metadata) const
{
int elapsed_since_last_click = metadata.clock.elapsed();
if (elapsed_since_last_click < m_double_click_speed) {
auto diff = event.position() - metadata.last_position;
auto distance_travelled_squared = diff.x() * diff.x() + diff.y() * diff.y();
if (distance_travelled_squared <= (m_max_distance_for_double_click * m_max_distance_for_double_click))
return true;
}
return false;
}
void WindowManager::start_menu_doubleclick(Window& window, MouseEvent const& event)
{
// This is a special case. Basically, we're trying to determine whether
// double clicking on the window menu icon happened. In this case, the
// WindowFrame only receives a MouseDown event, and since the window
// menu popus up, it does not see the MouseUp event. But, if they subsequently
// click there again, the menu is closed and we receive a MouseUp event.
// So, in order to be able to detect a double click when a menu is being
// opened by the MouseDown event, we need to consider the MouseDown event
// as a potential double-click trigger
VERIFY(event.type() == Event::MouseDown);
auto& metadata = m_double_click_info.metadata_for_button(event.button());
if (&window != m_double_click_info.m_clicked_window) {
// we either haven't clicked anywhere, or we haven't clicked on this
// window. set the current click window, and reset the timers.
dbgln_if(DOUBLECLICK_DEBUG, "Initial mousedown on Window({}) for menus (previous was {})", &window, m_double_click_info.m_clicked_window);
m_double_click_info.m_clicked_window = window;
m_double_click_info.reset();
}
metadata.last_position = event.position();
metadata.clock.start();
}
bool WindowManager::is_menu_doubleclick(Window& window, MouseEvent const& event) const
{
VERIFY(event.type() == Event::MouseUp);
if (&window != m_double_click_info.m_clicked_window)
return false;
auto& metadata = m_double_click_info.metadata_for_button(event.button());
if (!metadata.clock.is_valid())
return false;
return is_considered_doubleclick(event, metadata);
}
void WindowManager::process_event_for_doubleclick(Window& window, MouseEvent& event)
{
// We only care about button presses (because otherwise it's not a doubleclick, duh!)
VERIFY(event.type() == Event::MouseUp);
if (&window != m_double_click_info.m_clicked_window) {
// we either haven't clicked anywhere, or we haven't clicked on this
// window. set the current click window, and reset the timers.
dbgln_if(DOUBLECLICK_DEBUG, "Initial mouseup on Window({}) for menus (previous was {})", &window, m_double_click_info.m_clicked_window);
m_double_click_info.m_clicked_window = window;
m_double_click_info.reset();
}
auto& metadata = m_double_click_info.metadata_for_button(event.button());
if (!metadata.clock.is_valid() || !is_considered_doubleclick(event, metadata)) {
// either the clock is invalid because we haven't clicked on this
// button on this window yet, so there's nothing to do, or this
// isn't considered to be a double click. either way, restart the
// clock
metadata.clock.start();
} else {
dbgln_if(DOUBLECLICK_DEBUG, "Transforming MouseUp to MouseDoubleClick ({} < {})!", metadata.clock.elapsed(), m_double_click_speed);
event = MouseEvent(Event::MouseDoubleClick, event.position(), event.buttons(), event.button(), event.modifiers(), event.wheel_delta());
// invalidate this now we've delivered a doubleclick, otherwise
// tripleclick will deliver two doubleclick events (incorrectly).
metadata.clock = {};
}
metadata.last_position = event.position();
}
void WindowManager::deliver_mouse_event(Window& window, MouseEvent const& event, bool process_double_click)
{
auto translated_event = event.translated(-window.position());
window.dispatch_event(translated_event);
if (process_double_click && translated_event.type() == Event::MouseUp) {
process_event_for_doubleclick(window, translated_event);
if (translated_event.type() == Event::MouseDoubleClick)
window.dispatch_event(translated_event);
}
}
bool WindowManager::process_ongoing_active_input_mouse_event(MouseEvent const& event)
{
if (!m_active_input_tracking_window)
return false;
// At this point, we have delivered the start of an input sequence to a
// client application. We must keep delivering to that client
// application until the input sequence is done.
//
// This prevents e.g. moving on one window out of the bounds starting
// a move in that other unrelated window, and other silly shenanigans.
deliver_mouse_event(*m_active_input_tracking_window, event, true);
if (event.type() == Event::MouseUp && event.buttons() == 0) {
m_active_input_tracking_window = nullptr;
}
return true;
}
bool WindowManager::process_mouse_event_for_titlebar_buttons(MouseEvent const& event)
{
if (m_cursor_tracking_button) {
m_cursor_tracking_button->on_mouse_event(event.translated(-m_cursor_tracking_button->screen_rect().location()));
return true;
}
// This is quite hackish, but it's how the Button hover effect is implemented.
if (m_hovered_button && event.type() == Event::MouseMove)
m_hovered_button->on_mouse_event(event.translated(-m_hovered_button->screen_rect().location()));
return false;
}
void WindowManager::process_mouse_event_for_window(HitTestResult& result, MouseEvent const& event)
{
auto& window = *result.window;
if (auto* blocking_modal_window = window.blocking_modal_window()) {
if (event.type() == Event::Type::MouseDown) {
// We're clicking on something that's blocked by a modal window.
// Flash the modal window to let the user know about it.
blocking_modal_window->frame().start_flash_animation();
}
// Don't send mouse events to windows blocked by a modal child.
return;
}
// First check if we should initiate a move or resize (Super+LMB or Super+RMB).
// In those cases, the event is swallowed by the window manager.
if (window.is_movable()) {
if (!window.is_fullscreen() && m_keyboard_modifiers == Mod_Super && event.type() == Event::MouseDown && event.button() == MouseButton::Left) {
start_window_move(window, event);
return;
}
if (window.is_resizable() && m_keyboard_modifiers == Mod_Super && event.type() == Event::MouseDown && event.button() == MouseButton::Right && !window.blocking_modal_window()) {
start_window_resize(window, event);
return;
}
}
if (event.type() == Event::MouseDown) {
if (window.type() == WindowType::Normal || window.type() == WindowType::ToolWindow)
move_to_front_and_make_active(window);
else if (window.type() == WindowType::Desktop)
set_active_window(&window);
}
if (result.is_frame_hit) {
// We are hitting the frame, pass the event along to WindowFrame.
window.frame().handle_mouse_event(event.translated(-window.frame().rect().location()));
return;
}
if (!window.global_cursor_tracking()) {
deliver_mouse_event(window, event, true);
}
if (event.type() == Event::MouseDown)
m_active_input_tracking_window = window;
}
void WindowManager::process_mouse_event(MouseEvent& event)
{
// 0. Forget the resize candidate (window that we could initiate a resize of from the current cursor position.)
// A new resize candidate may be determined if we hit an appropriate part of a window.
clear_resize_candidate();
// 1. Process ongoing drag events. This is done first to avoid clashing with global cursor tracking.
if (process_ongoing_drag(event))
return;
// 2. Send the mouse event to all windows with global cursor tracking enabled.
m_window_stack.for_each_visible_window_from_front_to_back([&](Window& window) {
if (window.global_cursor_tracking())
deliver_mouse_event(window, event, false);
return IterationDecision::Continue;
});
// 3. If there's an active input tracking window, all mouse events go there.
// Tracking ends after all mouse buttons have been released.
if (process_ongoing_active_input_mouse_event(event))
return;
// 4. If there's a window being moved around, take care of that.
if (process_ongoing_window_move(event))
return;
// 5. If there's a window being resized, take care of that.
if (process_ongoing_window_resize(event))
return;
// 6. If the event is inside a titlebar button, WindowServer implements all
// the behavior for those buttons internally.
if (process_mouse_event_for_titlebar_buttons(event))
return;
// 7. If there are menus open, deal with them now. (FIXME: This needs to be cleaned up & simplified!)
bool hitting_menu_in_window_with_active_menu = [&] {
if (!m_window_with_active_menu)
return false;
auto& frame = m_window_with_active_menu->frame();
return frame.menubar_rect().contains(event.position().translated(-frame.rect().location()));
}();
// FIXME: This is quite hackish, we clear the hovered menu before potentially setting the same menu
// as hovered again. This makes sure that the hovered state doesn't linger after moving the
// cursor away from a hovered menu.
MenuManager::the().set_hovered_menu(nullptr);
if (MenuManager::the().has_open_menu()
|| hitting_menu_in_window_with_active_menu) {
if (!hitting_menu_in_window_with_active_menu) {
MenuManager::the().dispatch_event(event);
return;
}
}
// 8. Hit test the window stack to see what's under the cursor.
auto result = m_window_stack.hit_test(event.position());
if (!result.has_value()) {
// No window is under the cursor.
if (event.type() == Event::MouseDown) {
// Clicked outside of any window -> no active window.
// FIXME: Is this actually necessary? The desktop window should catch everything anyway.
set_active_window(nullptr);
}
return;
}
process_mouse_event_for_window(result.value(), event);
}
void WindowManager::reevaluate_hovered_window(Window* updated_window)
{
if (m_dnd_client || m_resize_window || m_move_window || m_cursor_tracking_button || MenuManager::the().has_open_menu())
return;
auto cursor_location = Screen::the().cursor_location();
auto* currently_hovered = hovered_window();
if (updated_window) {
if (!(updated_window == currently_hovered || updated_window->frame().rect().contains(cursor_location) || (currently_hovered && currently_hovered->frame().rect().contains(cursor_location))))
return;
}
Window* hovered_window = nullptr;
if (auto* fullscreen_window = active_fullscreen_window()) {
if (fullscreen_window->hit_test(cursor_location).has_value())
hovered_window = fullscreen_window;
} else {
hovered_window = m_window_stack.window_at(cursor_location);
}
if (set_hovered_window(hovered_window)) {
if (currently_hovered && m_resize_candidate == currently_hovered)
clear_resize_candidate();
if (hovered_window) {
// Send a fake MouseMove event. This allows the new hovering window
// to determine which widget we're hovering, and also update the cursor
// accordingly. We do this because this re-evaluation of the currently
// hovered window wasn't triggered by a mouse move event, but rather
// e.g. a hit-test result change due to a transparent window repaint.
if (hovered_window->hit_test(cursor_location, false).has_value()) {
MouseEvent event(Event::MouseMove, cursor_location.translated(-hovered_window->rect().location()), 0, MouseButton::None, 0);
hovered_window->dispatch_event(event);
} else if (!hovered_window->is_frameless()) {
MouseEvent event(Event::MouseMove, cursor_location.translated(-hovered_window->frame().rect().location()), 0, MouseButton::None, 0);
hovered_window->frame().handle_mouse_event(event);
}
}
}
}
void WindowManager::clear_resize_candidate()
{
if (m_resize_candidate)
Compositor::the().invalidate_cursor();
m_resize_candidate = nullptr;
}
Gfx::IntRect WindowManager::desktop_rect() const
{
if (active_fullscreen_window())
return Screen::the().rect();
return {
0,
0,
Screen::the().width(),
Screen::the().height() - 28
};
}
Gfx::IntRect WindowManager::arena_rect_for_type(WindowType type) const
{
switch (type) {
case WindowType::Desktop:
case WindowType::Normal:
case WindowType::ToolWindow:
return desktop_rect();
case WindowType::Menu:
case WindowType::WindowSwitcher:
case WindowType::Taskbar:
case WindowType::Tooltip:
case WindowType::Applet:
case WindowType::Notification:
return Screen::the().rect();
default:
VERIFY_NOT_REACHED();
}
}
void WindowManager::event(Core::Event& event)
{
if (static_cast<Event&>(event).is_mouse_event()) {
auto& mouse_event = static_cast<MouseEvent&>(event);
if (mouse_event.type() != Event::MouseMove)
m_previous_event_was_super_keydown = false;
process_mouse_event(mouse_event);
set_hovered_window(m_window_stack.window_at(mouse_event.position(), WindowStack::IncludeWindowFrame::No));
return;
}
if (static_cast<Event&>(event).is_key_event()) {
auto& key_event = static_cast<KeyEvent const&>(event);
m_keyboard_modifiers = key_event.modifiers();
// Escape key cancels an ongoing drag.
if (key_event.type() == Event::KeyDown && key_event.key() == Key_Escape && m_dnd_client) {
// Notify the drag-n-drop client that the drag was cancelled.
m_dnd_client->async_drag_cancelled();
// Also notify the currently hovered window (if any) that the ongoing drag was cancelled.
if (m_hovered_window && m_hovered_window->client() && m_hovered_window->client() != m_dnd_client)
m_hovered_window->client()->async_drag_cancelled();
end_dnd_drag();
return;
}
if (key_event.type() == Event::KeyDown && (key_event.modifiers() == (Mod_Ctrl | Mod_Super | Mod_Shift) && key_event.key() == Key_I)) {
reload_icon_bitmaps_after_scale_change(!m_allow_hidpi_icons);
Compositor::the().invalidate_screen();
return;
}
if (key_event.type() == Event::KeyDown && key_event.key() == Key_Super) {
m_previous_event_was_super_keydown = true;
} else if (m_previous_event_was_super_keydown) {
m_previous_event_was_super_keydown = false;
if (!m_dnd_client && !m_active_input_tracking_window && key_event.type() == Event::KeyUp && key_event.key() == Key_Super) {
tell_wms_super_key_pressed();
return;
}
}
if (MenuManager::the().current_menu() && key_event.key() != Key_Super) {
MenuManager::the().dispatch_event(event);
return;
}
if (key_event.type() == Event::KeyDown && ((key_event.modifiers() == Mod_Super && key_event.key() == Key_Tab) || (key_event.modifiers() == (Mod_Super | Mod_Shift) && key_event.key() == Key_Tab)))
m_switcher.show();
if (m_switcher.is_visible()) {
m_switcher.on_key_event(key_event);
return;
}
if (m_active_input_window) {
if (key_event.type() == Event::KeyDown && key_event.modifiers() == Mod_Super && m_active_input_window->type() != WindowType::Desktop) {
if (key_event.key() == Key_Down) {
if (m_active_input_window->is_resizable() && m_active_input_window->is_maximized()) {
maximize_windows(*m_active_input_window, false);
return;
}
if (m_active_input_window->is_minimizable())
minimize_windows(*m_active_input_window, true);
return;
}
if (m_active_input_window->is_resizable()) {
if (key_event.key() == Key_Up) {
maximize_windows(*m_active_input_window, !m_active_input_window->is_maximized());
return;
}
if (key_event.key() == Key_Left) {
if (m_active_input_window->tiled() == WindowTileType::Left)
return;
if (m_active_input_window->tiled() != WindowTileType::None) {
m_active_input_window->set_untiled();
return;
}
if (m_active_input_window->is_maximized())
maximize_windows(*m_active_input_window, false);
m_active_input_window->set_tiled(WindowTileType::Left);
return;
}
if (key_event.key() == Key_Right) {
if (m_active_input_window->tiled() == WindowTileType::Right)
return;
if (m_active_input_window->tiled() != WindowTileType::None) {
m_active_input_window->set_untiled();
return;
}
if (m_active_input_window->is_maximized())
maximize_windows(*m_active_input_window, false);
m_active_input_window->set_tiled(WindowTileType::Right);
return;
}
}
}
m_active_input_window->dispatch_event(event);
return;
}
}
Core::Object::event(event);
}
void WindowManager::set_highlight_window(Window* new_highlight_window)
{
if (new_highlight_window == m_window_stack.highlight_window())
return;
auto* previous_highlight_window = m_window_stack.highlight_window();
m_window_stack.set_highlight_window(new_highlight_window);
if (previous_highlight_window) {
previous_highlight_window->invalidate(true, true);
Compositor::the().invalidate_screen(previous_highlight_window->frame().render_rect());
}
if (new_highlight_window) {
new_highlight_window->invalidate(true, true);
Compositor::the().invalidate_screen(new_highlight_window->frame().render_rect());
}
// Invalidate occlusions in case the state change changes geometry
Compositor::the().invalidate_occlusions();
}
bool WindowManager::is_active_window_or_accessory(Window& window) const
{
if (window.is_accessory())
return window.parent_window()->is_active();
return window.is_active();
}
static bool window_type_can_become_active(WindowType type)
{
return type == WindowType::Normal || type == WindowType::ToolWindow || type == WindowType::Desktop;
}
void WindowManager::restore_active_input_window(Window* window)
{
// If the previous active input window is gone, fall back to the
// current active window
if (!window)
window = active_window();
// If the current active window is also gone, pick some other window
if (!window && pick_new_active_window(nullptr))
return;
if (window && !window->is_minimized() && window->is_visible())
set_active_input_window(window);
else
set_active_input_window(nullptr);
}
Window* WindowManager::set_active_input_window(Window* window)
{
if (window == m_active_input_window)
return window;
Window* previous_input_window = m_active_input_window;
if (previous_input_window)
Core::EventLoop::current().post_event(*previous_input_window, make<Event>(Event::WindowInputLeft));
if (window) {
m_active_input_window = *window;
Core::EventLoop::current().post_event(*window, make<Event>(Event::WindowInputEntered));
} else {
m_active_input_window = nullptr;
}
return previous_input_window;
}
void WindowManager::set_active_window(Window* new_active_window, bool make_input)
{
if (new_active_window) {
if (auto* modal_window = new_active_window->blocking_modal_window()) {
VERIFY(modal_window->is_modal());
VERIFY(modal_window != new_active_window);
new_active_window = modal_window;
make_input = true;
}
if (!window_type_can_become_active(new_active_window->type()))
return;
}
auto* new_active_input_window = new_active_window;
if (new_active_window && new_active_window->is_accessory()) {
// The parent of an accessory window is always the active
// window, but input is routed to the accessory window
new_active_window = new_active_window->parent_window();
}
if (make_input)
set_active_input_window(new_active_input_window);
if (new_active_window == m_window_stack.active_window())
return;
if (auto* previously_active_window = m_window_stack.active_window()) {
for (auto& child_window : previously_active_window->child_windows()) {
if (child_window && child_window->type() == WindowType::Tooltip)
child_window->request_close();
}
Core::EventLoop::current().post_event(*previously_active_window, make<Event>(Event::WindowDeactivated));
previously_active_window->invalidate(true, true);
m_window_stack.set_active_window(nullptr);
m_active_input_tracking_window = nullptr;
tell_wms_window_state_changed(*previously_active_window);
}
if (new_active_window) {
m_window_stack.set_active_window(new_active_window);
Core::EventLoop::current().post_event(*new_active_window, make<Event>(Event::WindowActivated));
new_active_window->invalidate(true, true);
tell_wms_window_state_changed(*new_active_window);
}
// Window shapes may have changed (e.g. shadows for inactive/active windows)
Compositor::the().invalidate_occlusions();
}
bool WindowManager::set_hovered_window(Window* window)
{
if (m_hovered_window == window)
return false;
if (m_hovered_window)
Core::EventLoop::current().post_event(*m_hovered_window, make<Event>(Event::WindowLeft));
m_hovered_window = window;
if (m_hovered_window)
Core::EventLoop::current().post_event(*m_hovered_window, make<Event>(Event::WindowEntered));
return true;
}
ClientConnection const* WindowManager::active_client() const
{
if (auto* window = m_window_stack.active_window())
return window->client();
return nullptr;
}
Cursor const& WindowManager::active_cursor() const
{
if (m_dnd_client)
return *m_drag_cursor;
if (m_move_window)
return *m_move_cursor;
if (m_resize_window || m_resize_candidate) {
switch (m_resize_direction) {
case ResizeDirection::Up:
case ResizeDirection::Down:
return *m_resize_vertically_cursor;
case ResizeDirection::Left:
case ResizeDirection::Right:
return *m_resize_horizontally_cursor;
case ResizeDirection::UpLeft:
case ResizeDirection::DownRight:
return *m_resize_diagonally_tlbr_cursor;
case ResizeDirection::UpRight:
case ResizeDirection::DownLeft:
return *m_resize_diagonally_bltr_cursor;
case ResizeDirection::None:
break;
}
}
if (m_hovered_window) {
if (auto* modal_window = const_cast<Window&>(*m_hovered_window).blocking_modal_window()) {
if (modal_window->cursor())
return *modal_window->cursor();
} else if (m_hovered_window->cursor()) {
return *m_hovered_window->cursor();
}
}
return *m_arrow_cursor;
}
void WindowManager::set_hovered_button(Button* button)
{
m_hovered_button = button;
}
void WindowManager::set_resize_candidate(Window& window, ResizeDirection direction)
{
m_resize_candidate = window;
m_resize_direction = direction;
}
ResizeDirection WindowManager::resize_direction_of_window(Window const& window)
{
if (&window != m_resize_window)
return ResizeDirection::None;
return m_resize_direction;
}
Gfx::IntRect WindowManager::maximized_window_rect(Window const& window) const
{
Gfx::IntRect rect = Screen::the().rect();
// Subtract window title bar (leaving the border)
rect.set_y(rect.y() + window.frame().titlebar_rect().height() + window.frame().menubar_rect().height());
rect.set_height(rect.height() - window.frame().titlebar_rect().height() - window.frame().menubar_rect().height());
// Subtract taskbar window height if present
const_cast<WindowManager*>(this)->m_window_stack.for_each_visible_window_of_type_from_back_to_front(WindowType::Taskbar, [&rect](Window& taskbar_window) {
rect.set_height(rect.height() - taskbar_window.height());
return IterationDecision::Break;
});
constexpr int tasteful_space_above_maximized_window = 1;
rect.set_y(rect.y() + tasteful_space_above_maximized_window);
rect.set_height(rect.height() - tasteful_space_above_maximized_window);
return rect;
}
void WindowManager::start_dnd_drag(ClientConnection& client, String const& text, Gfx::Bitmap const* bitmap, Core::MimeData const& mime_data)
{
VERIFY(!m_dnd_client);
m_dnd_client = client;
m_dnd_text = text;
m_dnd_bitmap = bitmap;
m_dnd_mime_data = mime_data;
Compositor::the().invalidate_cursor();
m_active_input_tracking_window = nullptr;
}
void WindowManager::end_dnd_drag()
{
VERIFY(m_dnd_client);
Compositor::the().invalidate_cursor();
m_dnd_client = nullptr;
m_dnd_text = {};
m_dnd_bitmap = nullptr;
}
Gfx::IntRect WindowManager::dnd_rect() const
{
int bitmap_width = m_dnd_bitmap ? m_dnd_bitmap->width() : 0;
int bitmap_height = m_dnd_bitmap ? m_dnd_bitmap->height() : 0;
int width = font().width(m_dnd_text) + bitmap_width;
int height = max((int)font().glyph_height(), bitmap_height);
auto location = Compositor::the().current_cursor_rect().center().translated(8, 8);
return Gfx::IntRect(location, { width, height }).inflated(16, 8);
}
void WindowManager::invalidate_after_theme_or_font_change()
{
Compositor::the().set_background_color(m_config->read_entry("Background", "Color", palette().desktop_background().to_string()));
WindowFrame::reload_config();
m_window_stack.for_each_window([&](Window& window) {
window.frame().theme_changed();
return IterationDecision::Continue;
});
ClientConnection::for_each_client([&](ClientConnection& client) {
client.async_update_system_theme(Gfx::current_system_theme_buffer());
});
MenuManager::the().did_change_theme();
AppletManager::the().did_change_theme();
Compositor::the().invalidate_occlusions();
Compositor::the().invalidate_screen();
}
bool WindowManager::update_theme(String theme_path, String theme_name)
{
auto new_theme = Gfx::load_system_theme(theme_path);
if (!new_theme.is_valid())
return false;
Gfx::set_system_theme(new_theme);
m_palette = Gfx::PaletteImpl::create_with_anonymous_buffer(new_theme);
auto wm_config = Core::ConfigFile::open("/etc/WindowServer.ini");
wm_config->write_entry("Theme", "Name", theme_name);
wm_config->remove_entry("Background", "Color");
wm_config->sync();
invalidate_after_theme_or_font_change();
return true;
}
void WindowManager::did_popup_a_menu(Badge<Menu>)
{
// Clear any ongoing input gesture
if (!m_active_input_tracking_window)
return;
m_active_input_tracking_window->set_automatic_cursor_tracking_enabled(false);
m_active_input_tracking_window = nullptr;
}
void WindowManager::minimize_windows(Window& window, bool minimized)
{
for_each_window_in_modal_stack(window, [&](auto& w, bool) {
w.set_minimized(minimized);
return IterationDecision::Continue;
});
}
void WindowManager::maximize_windows(Window& window, bool maximized)
{
for_each_window_in_modal_stack(window, [&](auto& w, bool stack_top) {
if (stack_top)
w.set_maximized(maximized);
if (w.is_minimized())
w.set_minimized(false);
return IterationDecision::Continue;
});
}
Gfx::IntPoint WindowManager::get_recommended_window_position(Gfx::IntPoint const& desired)
{
// FIXME: Find a better source for the width and height to shift by.
Gfx::IntPoint shift(8, Gfx::WindowTheme::current().titlebar_height(Gfx::WindowTheme::WindowType::Normal, palette()) + 10);
// FIXME: Find a better source for this.
int taskbar_height = 28;
Window const* overlap_window = nullptr;
m_window_stack.for_each_visible_window_of_type_from_front_to_back(WindowType::Normal, [&](Window& window) {
if (window.default_positioned() && (!overlap_window || overlap_window->window_id() < window.window_id())) {
overlap_window = &window;
}
return IterationDecision::Continue;
});
Gfx::IntPoint point;
if (overlap_window) {
point = overlap_window->position() + shift;
point = { point.x() % Screen::the().width(),
(point.y() >= (Screen::the().height() - taskbar_height))
? Gfx::WindowTheme::current().titlebar_height(Gfx::WindowTheme::WindowType::Normal, palette())
: point.y() };
} else {
point = desired;
}
return point;
}
int WindowManager::compositor_icon_scale() const
{
if (!m_allow_hidpi_icons)
return 1;
return scale_factor();
}
void WindowManager::reload_icon_bitmaps_after_scale_change(bool allow_hidpi_icons)
{
m_allow_hidpi_icons = allow_hidpi_icons;
reload_config();
m_window_stack.for_each_window([&](Window& window) {
auto& window_frame = window.frame();
window_frame.theme_changed();
return IterationDecision::Continue;
});
}
void WindowManager::set_window_with_active_menu(Window* window)
{
if (m_window_with_active_menu == window)
return;
if (window)
m_window_with_active_menu = window->make_weak_ptr<Window>();
else
m_window_with_active_menu = nullptr;
}
}
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