ladybird/Servers/WindowServer/WSWindowManager.cpp
Andreas Kling af6483cabb WindowServer: Fix incorrect "window left" event after button drag
This fixes an issue where we'd send a "cursor has left the window"
message incorrectly to the client after a button was clicked and the
user moved the cursor a little without releasing the button.

The issue was that we didn't update the 'hovered_window' out param
in mouse event processing in the case where we had an active input
window set.
2019-08-12 18:36:33 +02:00

1064 lines
38 KiB
C++

#include "WSWindowManager.h"
#include "WSCompositor.h"
#include "WSEventLoop.h"
#include "WSMenu.h"
#include "WSMenuBar.h"
#include "WSMenuItem.h"
#include "WSScreen.h"
#include "WSWindow.h"
#include <AK/LogStream.h>
#include <AK/StdLibExtras.h>
#include <AK/Vector.h>
#include <LibCore/CTimer.h>
#include <LibDraw/CharacterBitmap.h>
#include <LibDraw/Font.h>
#include <LibDraw/PNGLoader.h>
#include <LibDraw/Painter.h>
#include <LibDraw/StylePainter.h>
#include <WindowServer/WSAPITypes.h>
#include <WindowServer/WSButton.h>
#include <WindowServer/WSClientConnection.h>
#include <WindowServer/WSCursor.h>
#include <errno.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
//#define DEBUG_COUNTERS
//#define DEBUG_MENUS
//#define RESIZE_DEBUG
//#define DRAG_DEBUG
//#define DOUBLECLICK_DEBUG
static WSWindowManager* s_the;
WSWindowManager& WSWindowManager::the()
{
ASSERT(s_the);
return *s_the;
}
WSWindowManager::WSWindowManager()
{
s_the = this;
reload_config(false);
struct AppMenuItem {
const char* binary_name;
const char* description;
};
Vector<AppMenuItem> apps = {
{ "/bin/Terminal", "Open Terminal..." },
{ "/bin/FileManager", "Open FileManager..." },
{ "/bin/ProcessManager", "Open ProcessManager..." }
};
u8 system_menu_name[] = { 0xf8, 0 };
m_system_menu = make<WSMenu>(nullptr, -1, String((const char*)system_menu_name));
int appIndex = 1;
for (const auto& app : apps) {
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, appIndex++, app.description));
}
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 100, "Reload WM Config File"));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 200, "About..."));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 300, "Shutdown..."));
m_system_menu->on_item_activation = [this, apps](WSMenuItem& item) {
if (item.identifier() >= 1 && item.identifier() <= 1u + apps.size() - 1) {
if (fork() == 0) {
const auto& bin = apps[item.identifier() - 1].binary_name;
execl(bin, bin, nullptr);
ASSERT_NOT_REACHED();
}
}
switch (item.identifier()) {
case 100:
reload_config(true);
break;
case 200:
if (fork() == 0) {
execl("/bin/About", "/bin/About", nullptr);
ASSERT_NOT_REACHED();
}
return;
case 300:
if (fork() == 0) {
execl("/bin/SystemDialog", "/bin/SystemDialog", "--shutdown", nullptr);
ASSERT_NOT_REACHED();
}
return;
}
#ifdef DEBUG_MENUS
dbg() << "WSMenu 1 item activated: " << item.text();
#endif
};
// NOTE: This ensures that the system menu has the correct dimensions.
set_current_menubar(nullptr);
m_menu_manager.setup();
invalidate();
WSCompositor::the().compose();
}
WSWindowManager::~WSWindowManager()
{
}
NonnullRefPtr<WSCursor> WSWindowManager::get_cursor(const String& name, const Point& hotspot)
{
auto path = m_wm_config->read_entry("Cursor", name, "/res/cursors/arrow.png");
auto gb = GraphicsBitmap::load_from_file(path);
if (gb)
return WSCursor::create(*gb, hotspot);
return WSCursor::create(*GraphicsBitmap::load_from_file("/res/cursors/arrow.png"));
}
NonnullRefPtr<WSCursor> WSWindowManager::get_cursor(const String& name)
{
auto path = m_wm_config->read_entry("Cursor", name, "/res/cursors/arrow.png");
auto gb = GraphicsBitmap::load_from_file(path);
if (gb)
return WSCursor::create(*gb);
return WSCursor::create(*GraphicsBitmap::load_from_file("/res/cursors/arrow.png"));
}
void WSWindowManager::reload_config(bool set_screen)
{
m_wm_config = CConfigFile::get_for_app("WindowManager");
m_double_click_speed = m_wm_config->read_num_entry("Input", "DoubleClickSpeed", 250);
if (set_screen)
set_resolution(m_wm_config->read_num_entry("Screen", "Width", 1920),
m_wm_config->read_num_entry("Screen", "Height", 1080));
m_arrow_cursor = get_cursor("Arrow", { 2, 2 });
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_i_beam_cursor = get_cursor("IBeam");
m_disallowed_cursor = get_cursor("Disallowed");
m_move_cursor = get_cursor("Move");
m_background_color = m_wm_config->read_color_entry("Colors", "Background", Color::Red);
m_active_window_border_color = m_wm_config->read_color_entry("Colors", "ActiveWindowBorder", Color::Red);
m_active_window_border_color2 = m_wm_config->read_color_entry("Colors", "ActiveWindowBorder2", Color::Red);
m_active_window_title_color = m_wm_config->read_color_entry("Colors", "ActiveWindowTitle", Color::Red);
m_inactive_window_border_color = m_wm_config->read_color_entry("Colors", "InactiveWindowBorder", Color::Red);
m_inactive_window_border_color2 = m_wm_config->read_color_entry("Colors", "InactiveWindowBorder2", Color::Red);
m_inactive_window_title_color = m_wm_config->read_color_entry("Colors", "InactiveWindowTitle", Color::Red);
m_dragging_window_border_color = m_wm_config->read_color_entry("Colors", "DraggingWindowBorder", Color::Red);
m_dragging_window_border_color2 = m_wm_config->read_color_entry("Colors", "DraggingWindowBorder2", Color::Red);
m_dragging_window_title_color = m_wm_config->read_color_entry("Colors", "DraggingWindowTitle", Color::Red);
m_highlight_window_border_color = m_wm_config->read_color_entry("Colors", "HighlightWindowBorder", Color::Red);
m_highlight_window_border_color2 = m_wm_config->read_color_entry("Colors", "HighlightWindowBorder2", Color::Red);
m_highlight_window_title_color = m_wm_config->read_color_entry("Colors", "HighlightWindowTitle", Color::Red);
m_menu_selection_color = m_wm_config->read_color_entry("Colors", "MenuSelectionColor", Color::Red);
}
const Font& WSWindowManager::font() const
{
return Font::default_font();
}
const Font& WSWindowManager::window_title_font() const
{
return Font::default_bold_font();
}
const Font& WSWindowManager::menu_font() const
{
return Font::default_font();
}
const Font& WSWindowManager::app_menu_font() const
{
return Font::default_bold_font();
}
void WSWindowManager::set_resolution(int width, int height)
{
WSCompositor::the().set_resolution(width, height);
WSClientConnection::for_each_client([&](WSClientConnection& client) {
client.notify_about_new_screen_rect(WSScreen::the().rect());
});
if (m_wm_config) {
dbg() << "Saving resolution: " << Size(width, height) << " to config file at " << m_wm_config->file_name();
m_wm_config->write_num_entry("Screen", "Width", width);
m_wm_config->write_num_entry("Screen", "Height", height);
m_wm_config->sync();
}
}
int WSWindowManager::menubar_menu_margin() const
{
return 16;
}
void WSWindowManager::set_current_menu(WSMenu* menu)
{
if (m_current_menu == menu)
return;
if (m_current_menu)
m_current_menu->close();
if (menu)
m_current_menu = menu->make_weak_ptr();
}
void WSWindowManager::set_current_menubar(WSMenuBar* menubar)
{
if (menubar)
m_current_menubar = menubar->make_weak_ptr();
else
m_current_menubar = nullptr;
#ifdef DEBUG_MENUS
dbg() << "[WM] Current menubar is now " << menubar;
#endif
Point next_menu_location { menubar_menu_margin() / 2, 0 };
int index = 0;
for_each_active_menubar_menu([&](WSMenu& menu) {
int text_width = index == 1 ? Font::default_bold_font().width(menu.name()) : font().width(menu.name());
menu.set_rect_in_menubar({ next_menu_location.x() - menubar_menu_margin() / 2, 0, text_width + menubar_menu_margin(), menubar_rect().height() - 1 });
menu.set_text_rect_in_menubar({ next_menu_location, { text_width, menubar_rect().height() } });
next_menu_location.move_by(menu.rect_in_menubar().width(), 0);
++index;
return true;
});
m_menu_manager.refresh();
}
void WSWindowManager::add_window(WSWindow& window)
{
m_windows_in_order.append(&window);
if (window.is_fullscreen()) {
CEventLoop::current().post_event(window, make<WSResizeEvent>(window.rect(), WSScreen::the().rect()));
window.set_rect(WSScreen::the().rect());
}
set_active_window(&window);
if (m_switcher.is_visible() && window.type() != WSWindowType::WindowSwitcher)
m_switcher.refresh();
if (window.listens_to_wm_events()) {
for_each_window([&](WSWindow& other_window) {
if (&window != &other_window) {
tell_wm_listener_about_window(window, other_window);
tell_wm_listener_about_window_icon(window, other_window);
}
return IterationDecision::Continue;
});
}
tell_wm_listeners_window_state_changed(window);
}
void WSWindowManager::move_to_front_and_make_active(WSWindow& window)
{
if (window.is_blocked_by_modal_window())
return;
if (m_windows_in_order.tail() != &window)
invalidate(window);
m_windows_in_order.remove(&window);
m_windows_in_order.append(&window);
set_active_window(&window);
}
void WSWindowManager::remove_window(WSWindow& window)
{
invalidate(window);
m_windows_in_order.remove(&window);
if (window.is_active())
pick_new_active_window();
if (m_switcher.is_visible() && window.type() != WSWindowType::WindowSwitcher)
m_switcher.refresh();
for_each_window_listening_to_wm_events([&window](WSWindow& listener) {
if (!(listener.wm_event_mask() & WSAPI_WMEventMask::WindowRemovals))
return IterationDecision::Continue;
if (window.client())
CEventLoop::current().post_event(listener, make<WSWMWindowRemovedEvent>(window.client()->client_id(), window.window_id()));
return IterationDecision::Continue;
});
}
void WSWindowManager::tell_wm_listener_about_window(WSWindow& listener, WSWindow& window)
{
if (!(listener.wm_event_mask() & WSAPI_WMEventMask::WindowStateChanges))
return;
if (window.client())
CEventLoop::current().post_event(listener, make<WSWMWindowStateChangedEvent>(window.client()->client_id(), window.window_id(), window.title(), window.rect(), window.is_active(), window.type(), window.is_minimized()));
}
void WSWindowManager::tell_wm_listener_about_window_rect(WSWindow& listener, WSWindow& window)
{
if (!(listener.wm_event_mask() & WSAPI_WMEventMask::WindowRectChanges))
return;
if (window.client())
CEventLoop::current().post_event(listener, make<WSWMWindowRectChangedEvent>(window.client()->client_id(), window.window_id(), window.rect()));
}
void WSWindowManager::tell_wm_listener_about_window_icon(WSWindow& listener, WSWindow& window)
{
if (!(listener.wm_event_mask() & WSAPI_WMEventMask::WindowIconChanges))
return;
if (window.client() && window.icon().shared_buffer_id() != -1)
CEventLoop::current().post_event(listener, make<WSWMWindowIconBitmapChangedEvent>(window.client()->client_id(), window.window_id(), window.icon().shared_buffer_id(), window.icon().size()));
}
void WSWindowManager::tell_wm_listeners_window_state_changed(WSWindow& window)
{
for_each_window_listening_to_wm_events([&](WSWindow& listener) {
tell_wm_listener_about_window(listener, window);
return IterationDecision::Continue;
});
}
void WSWindowManager::tell_wm_listeners_window_icon_changed(WSWindow& window)
{
for_each_window_listening_to_wm_events([&](WSWindow& listener) {
tell_wm_listener_about_window_icon(listener, window);
return IterationDecision::Continue;
});
}
void WSWindowManager::tell_wm_listeners_window_rect_changed(WSWindow& window)
{
for_each_window_listening_to_wm_events([&](WSWindow& listener) {
tell_wm_listener_about_window_rect(listener, window);
return IterationDecision::Continue;
});
}
void WSWindowManager::notify_title_changed(WSWindow& window)
{
if (window.type() != WSWindowType::Normal)
return;
dbg() << "[WM] WSWindow{" << &window << "} title set to \"" << window.title() << '"';
invalidate(window.frame().rect());
if (m_switcher.is_visible())
m_switcher.refresh();
tell_wm_listeners_window_state_changed(window);
}
void WSWindowManager::notify_rect_changed(WSWindow& window, const Rect& old_rect, const Rect& new_rect)
{
UNUSED_PARAM(old_rect);
UNUSED_PARAM(new_rect);
#ifdef RESIZE_DEBUG
dbg() << "[WM] WSWindow " << &window << " rect changed " << old_rect << " -> " << new_rect;
#endif
if (m_switcher.is_visible() && window.type() != WSWindowType::WindowSwitcher)
m_switcher.refresh();
tell_wm_listeners_window_rect_changed(window);
}
void WSWindowManager::notify_minimization_state_changed(WSWindow& window)
{
tell_wm_listeners_window_state_changed(window);
if (window.is_active() && window.is_minimized())
pick_new_active_window();
}
void WSWindowManager::pick_new_active_window()
{
for_each_visible_window_of_type_from_front_to_back(WSWindowType::Normal, [&](WSWindow& candidate) {
set_active_window(&candidate);
return IterationDecision::Break;
});
}
void WSWindowManager::close_current_menu()
{
if (m_current_menu && m_current_menu->menu_window())
m_current_menu->menu_window()->set_visible(false);
m_current_menu = nullptr;
m_menu_manager.refresh();
}
void WSWindowManager::start_window_drag(WSWindow& window, const WSMouseEvent& event)
{
#ifdef DRAG_DEBUG
dbg() << "[WM] Begin dragging WSWindow{" << &window << "}";
#endif
move_to_front_and_make_active(window);
m_drag_window = window.make_weak_ptr();
;
m_drag_origin = event.position();
m_drag_window_origin = window.position();
invalidate(window);
}
void WSWindowManager::start_window_resize(WSWindow& window, const Point& position, MouseButton button)
{
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 },
};
Rect outer_rect = window.frame().rect();
ASSERT(outer_rect.contains(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) {
ASSERT(!m_resize_window);
return;
}
#ifdef RESIZE_DEBUG
dbg() << "[WM] Begin resizing WSWindow{" << &window << "}";
#endif
m_resizing_mouse_button = button;
m_resize_window = window.make_weak_ptr();
;
m_resize_origin = position;
m_resize_window_original_rect = window.rect();
invalidate(window);
}
void WSWindowManager::start_window_resize(WSWindow& window, const WSMouseEvent& event)
{
start_window_resize(window, event.position(), event.button());
}
bool WSWindowManager::process_ongoing_window_drag(WSMouseEvent& event, WSWindow*& hovered_window)
{
if (!m_drag_window)
return false;
if (event.type() == WSEvent::MouseUp && event.button() == MouseButton::Left) {
#ifdef DRAG_DEBUG
dbg() << "[WM] Finish dragging WSWindow{" << m_drag_window << "}";
#endif
invalidate(*m_drag_window);
if (m_drag_window->rect().contains(event.position()))
hovered_window = m_drag_window;
if (m_drag_window->is_resizable()) {
process_event_for_doubleclick(*m_drag_window, event);
if (event.type() == WSEvent::MouseDoubleClick) {
#if defined(DOUBLECLICK_DEBUG)
dbg() << "[WM] Click up became doubleclick!";
#endif
m_drag_window->set_maximized(!m_drag_window->is_maximized());
}
}
m_drag_window = nullptr;
return true;
}
if (event.type() == WSEvent::MouseMove) {
#ifdef DRAG_DEBUG
dbg() << "[WM] Dragging, origin: " << m_drag_origin << ", now: " << event.position();
#endif
Point pos = m_drag_window_origin.translated(event.position() - m_drag_origin);
m_drag_window->set_position_without_repaint(pos);
if (m_drag_window->rect().contains(event.position()))
hovered_window = m_drag_window;
return true;
}
return false;
}
bool WSWindowManager::process_ongoing_window_resize(const WSMouseEvent& event, WSWindow*& hovered_window)
{
if (!m_resize_window)
return false;
if (event.type() == WSEvent::MouseUp && event.button() == m_resizing_mouse_button) {
#ifdef RESIZE_DEBUG
dbg() << "[WM] Finish resizing WSWindow{" << m_resize_window << "}";
#endif
CEventLoop::current().post_event(*m_resize_window, make<WSResizeEvent>(m_resize_window->rect(), m_resize_window->rect()));
invalidate(*m_resize_window);
if (m_resize_window->rect().contains(event.position()))
hovered_window = m_resize_window;
m_resize_window = nullptr;
m_resizing_mouse_button = MouseButton::None;
return true;
}
if (event.type() != WSEvent::MouseMove)
return false;
auto old_rect = m_resize_window->rect();
int diff_x = event.x() - m_resize_origin.x();
int diff_y = event.y() - m_resize_origin.y();
int change_x = 0;
int change_y = 0;
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_y = diff_y;
change_h = -diff_y;
break;
case ResizeDirection::Up:
change_y = diff_y;
change_h = -diff_y;
break;
case ResizeDirection::UpLeft:
change_x = diff_x;
change_w = -diff_x;
change_y = diff_y;
change_h = -diff_y;
break;
case ResizeDirection::Left:
change_x = diff_x;
change_w = -diff_x;
break;
case ResizeDirection::DownLeft:
change_x = diff_x;
change_w = -diff_x;
change_h = diff_y;
break;
case ResizeDirection::Down:
change_h = diff_y;
break;
default:
ASSERT_NOT_REACHED();
}
auto new_rect = m_resize_window_original_rect;
Size minimum_size { 50, 50 };
new_rect.set_x(new_rect.x() + change_x);
new_rect.set_y(new_rect.y() + change_y);
new_rect.set_width(max(minimum_size.width(), new_rect.width() + change_w));
new_rect.set_height(max(minimum_size.height(), new_rect.height() + change_h));
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 (new_rect.contains(event.position()))
hovered_window = m_resize_window;
if (m_resize_window->rect() == new_rect)
return true;
#ifdef RESIZE_DEBUG
dbg() << "[WM] Resizing, original: " << m_resize_window_original_rect << ", now: " << new_rect;
#endif
m_resize_window->set_rect(new_rect);
CEventLoop::current().post_event(*m_resize_window, make<WSResizeEvent>(old_rect, new_rect));
return true;
}
void WSWindowManager::set_cursor_tracking_button(WSButton* button)
{
m_cursor_tracking_button = button ? button->make_weak_ptr() : nullptr;
}
CElapsedTimer& WSWindowManager::DoubleClickInfo::click_clock(MouseButton button)
{
switch (button) {
case MouseButton::Left:
return m_left_click_clock;
case MouseButton::Right:
return m_right_click_clock;
case MouseButton::Middle:
return m_middle_click_clock;
default:
ASSERT_NOT_REACHED();
}
}
// #define DOUBLECLICK_DEBUG
void WSWindowManager::process_event_for_doubleclick(WSWindow& window, WSMouseEvent& event)
{
// We only care about button presses (because otherwise it's not a doubleclick, duh!)
ASSERT(event.type() == WSEvent::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.
#if defined(DOUBLECLICK_DEBUG)
dbg() << "Initial mouseup on window " << &window << " (previous was " << m_double_click_info.m_clicked_window << ')';
#endif
m_double_click_info.m_clicked_window = window.make_weak_ptr();
m_double_click_info.reset();
}
auto& clock = m_double_click_info.click_clock(event.button());
// if the clock is invalid, we haven't clicked with this button on this
// window yet, so there's nothing to do.
if (!clock.is_valid()) {
clock.start();
} else {
int elapsed_since_last_click = clock.elapsed();
clock.start();
// FIXME: It might be a sensible idea to also add a distance travel check.
// If the pointer moves too far, it's not a double click.
if (elapsed_since_last_click < m_double_click_speed) {
#if defined(DOUBLECLICK_DEBUG)
dbg() << "Transforming MouseUp to MouseDoubleClick (" << elapsed_since_last_click << " < " << m_double_click_speed << ")!";
#endif
event = WSMouseEvent(WSEvent::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).
clock = CElapsedTimer();
} else {
// too slow; try again
clock.start();
}
}
}
void WSWindowManager::deliver_mouse_event(WSWindow& window, WSMouseEvent& event)
{
window.event(event);
if (event.type() == WSEvent::MouseUp) {
process_event_for_doubleclick(window, event);
if (event.type() == WSEvent::MouseDoubleClick)
window.event(event);
}
}
void WSWindowManager::process_mouse_event(WSMouseEvent& event, WSWindow*& hovered_window)
{
hovered_window = nullptr;
if (process_ongoing_window_drag(event, hovered_window))
return;
if (process_ongoing_window_resize(event, hovered_window))
return;
if (m_cursor_tracking_button)
return m_cursor_tracking_button->on_mouse_event(event.translated(-m_cursor_tracking_button->screen_rect().location()));
// This is quite hackish, but it's how the WSButton hover effect is implemented.
if (m_hovered_button && event.type() == WSEvent::MouseMove)
m_hovered_button->on_mouse_event(event.translated(-m_hovered_button->screen_rect().location()));
HashTable<WSWindow*> windows_who_received_mouse_event_due_to_cursor_tracking;
for (auto* window = m_windows_in_order.tail(); window; window = window->prev()) {
if (!window->global_cursor_tracking())
continue;
ASSERT(window->is_visible()); // Maybe this should be supported? Idk. Let's catch it and think about it later.
ASSERT(!window->is_minimized()); // Maybe this should also be supported? Idk.
windows_who_received_mouse_event_due_to_cursor_tracking.set(window);
auto translated_event = event.translated(-window->position());
deliver_mouse_event(*window, translated_event);
}
// FIXME: Now that the menubar has a dedicated window, is this special-casing really necessary?
if (!active_window_is_modal() && menubar_rect().contains(event.position())) {
m_menu_manager.event(event);
return;
}
if (m_current_menu && m_current_menu->menu_window()) {
auto& window = *m_current_menu->menu_window();
bool event_is_inside_current_menu = window.rect().contains(event.position());
if (!event_is_inside_current_menu) {
if (m_current_menu->hovered_item())
m_current_menu->clear_hovered_item();
if (event.type() == WSEvent::MouseDown || event.type() == WSEvent::MouseUp)
close_current_menu();
} else {
hovered_window = &window;
auto translated_event = event.translated(-window.position());
deliver_mouse_event(window, translated_event);
}
return;
}
WSWindow* event_window_with_frame = nullptr;
if (m_active_input_window) {
// 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. dragging on one window out of the bounds starting
// a drag in that other unrelated window, and other silly shennanigans.
if (!windows_who_received_mouse_event_due_to_cursor_tracking.contains(m_active_input_window)) {
auto translated_event = event.translated(-m_active_input_window->position());
deliver_mouse_event(*m_active_input_window, translated_event);
windows_who_received_mouse_event_due_to_cursor_tracking.set(m_active_input_window.ptr());
}
if (event.type() == WSEvent::MouseUp && event.buttons() == 0) {
m_active_input_window = nullptr;
}
for_each_visible_window_from_front_to_back([&](auto& window) {
if (window.frame().rect().contains(event.position())) {
hovered_window = &window;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
} else {
for_each_visible_window_from_front_to_back([&](WSWindow& window) {
auto window_frame_rect = window.frame().rect();
if (!window_frame_rect.contains(event.position()))
return IterationDecision::Continue;
if (&window != m_resize_candidate.ptr())
clear_resize_candidate();
// First check if we should initiate a drag or resize (Logo+LMB or Logo+RMB).
// In those cases, the event is swallowed by the window manager.
if (window.is_movable()) {
if (!window.is_fullscreen() && m_keyboard_modifiers == Mod_Logo && event.type() == WSEvent::MouseDown && event.button() == MouseButton::Left) {
hovered_window = &window;
start_window_drag(window, event);
return IterationDecision::Break;
}
if (window.is_resizable() && m_keyboard_modifiers == Mod_Logo && event.type() == WSEvent::MouseDown && event.button() == MouseButton::Right && !window.is_blocked_by_modal_window()) {
hovered_window = &window;
start_window_resize(window, event);
return IterationDecision::Break;
}
}
if (m_keyboard_modifiers == Mod_Logo && event.type() == WSEvent::MouseWheel) {
float opacity_change = -event.wheel_delta() * 0.05f;
float new_opacity = window.opacity() + opacity_change;
if (new_opacity < 0.05f)
new_opacity = 0.05f;
if (new_opacity > 1.0f)
new_opacity = 1.0f;
window.set_opacity(new_opacity);
window.invalidate();
return IterationDecision::Break;
}
// Well okay, let's see if we're hitting the frame or the window inside the frame.
if (window.rect().contains(event.position())) {
if (window.type() == WSWindowType::Normal && event.type() == WSEvent::MouseDown)
move_to_front_and_make_active(window);
hovered_window = &window;
if (!window.global_cursor_tracking() && !windows_who_received_mouse_event_due_to_cursor_tracking.contains(&window)) {
auto translated_event = event.translated(-window.position());
deliver_mouse_event(window, translated_event);
if (event.type() == WSEvent::MouseDown) {
m_active_input_window = window.make_weak_ptr();
}
}
return IterationDecision::Break;
}
// We are hitting the frame, pass the event along to WSWindowFrame.
window.frame().on_mouse_event(event.translated(-window_frame_rect.location()));
event_window_with_frame = &window;
return IterationDecision::Break;
});
}
if (event_window_with_frame != m_resize_candidate.ptr())
clear_resize_candidate();
}
void WSWindowManager::clear_resize_candidate()
{
if (m_resize_candidate)
WSCompositor::the().invalidate_cursor();
m_resize_candidate = nullptr;
}
bool WSWindowManager::any_opaque_window_contains_rect(const Rect& rect)
{
bool found_containing_window = false;
for_each_window([&](WSWindow& window) {
if (!window.is_visible())
return IterationDecision::Continue;
if (window.is_minimized())
return IterationDecision::Continue;
if (window.opacity() < 1.0f)
return IterationDecision::Continue;
if (window.has_alpha_channel()) {
// FIXME: Just because the window has an alpha channel doesn't mean it's not opaque.
// Maybe there's some way we could know this?
return IterationDecision::Continue;
}
if (window.frame().rect().contains(rect)) {
found_containing_window = true;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
return found_containing_window;
};
bool WSWindowManager::any_opaque_window_above_this_one_contains_rect(const WSWindow& a_window, const Rect& rect)
{
bool found_containing_window = false;
bool checking = false;
for_each_visible_window_from_back_to_front([&](WSWindow& window) {
if (&window == &a_window) {
checking = true;
return IterationDecision::Continue;
}
if (!checking)
return IterationDecision::Continue;
if (!window.is_visible())
return IterationDecision::Continue;
if (window.is_minimized())
return IterationDecision::Continue;
if (window.opacity() < 1.0f)
return IterationDecision::Continue;
if (window.has_alpha_channel())
return IterationDecision::Continue;
if (window.frame().rect().contains(rect)) {
found_containing_window = true;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
return found_containing_window;
};
Rect WSWindowManager::menubar_rect() const
{
if (active_fullscreen_window())
return {};
return { 0, 0, WSScreen::the().rect().width(), 18 };
}
void WSWindowManager::draw_window_switcher()
{
if (m_switcher.is_visible())
m_switcher.draw();
}
void WSWindowManager::event(CEvent& event)
{
if (static_cast<WSEvent&>(event).is_mouse_event()) {
WSWindow* hovered_window = nullptr;
process_mouse_event(static_cast<WSMouseEvent&>(event), hovered_window);
set_hovered_window(hovered_window);
return;
}
if (static_cast<WSEvent&>(event).is_key_event()) {
auto& key_event = static_cast<const WSKeyEvent&>(event);
m_keyboard_modifiers = key_event.modifiers();
if (key_event.type() == WSEvent::KeyDown && key_event.modifiers() == Mod_Logo && key_event.key() == Key_Tab)
m_switcher.show();
if (m_switcher.is_visible()) {
m_switcher.on_key_event(key_event);
return;
}
if (m_active_window)
return m_active_window->event(event);
return;
}
CObject::event(event);
}
void WSWindowManager::set_highlight_window(WSWindow* window)
{
if (window == m_highlight_window)
return;
if (auto* previous_highlight_window = m_highlight_window.ptr())
invalidate(*previous_highlight_window);
m_highlight_window = window ? window->make_weak_ptr() : nullptr;
if (m_highlight_window)
invalidate(*m_highlight_window);
}
void WSWindowManager::set_active_window(WSWindow* window)
{
if (window && window->is_blocked_by_modal_window())
return;
if (window->type() != WSWindowType::Normal)
return;
if (window == m_active_window)
return;
auto* previously_active_window = m_active_window.ptr();
if (previously_active_window) {
CEventLoop::current().post_event(*previously_active_window, make<WSEvent>(WSEvent::WindowDeactivated));
invalidate(*previously_active_window);
}
m_active_window = window->make_weak_ptr();
if (m_active_window) {
CEventLoop::current().post_event(*m_active_window, make<WSEvent>(WSEvent::WindowActivated));
invalidate(*m_active_window);
auto* client = window->client();
ASSERT(client);
set_current_menubar(client->app_menubar());
if (previously_active_window)
tell_wm_listeners_window_state_changed(*previously_active_window);
tell_wm_listeners_window_state_changed(*m_active_window);
}
}
void WSWindowManager::set_hovered_window(WSWindow* window)
{
if (m_hovered_window == window)
return;
if (m_hovered_window)
CEventLoop::current().post_event(*m_hovered_window, make<WSEvent>(WSEvent::WindowLeft));
m_hovered_window = window ? window->make_weak_ptr() : nullptr;
if (m_hovered_window)
CEventLoop::current().post_event(*m_hovered_window, make<WSEvent>(WSEvent::WindowEntered));
}
void WSWindowManager::invalidate()
{
WSCompositor::the().invalidate();
}
void WSWindowManager::invalidate(const Rect& rect)
{
WSCompositor::the().invalidate(rect);
}
void WSWindowManager::invalidate(const WSWindow& window)
{
invalidate(window.frame().rect());
}
void WSWindowManager::invalidate(const WSWindow& window, const Rect& rect)
{
if (rect.is_empty()) {
invalidate(window);
return;
}
auto outer_rect = window.frame().rect();
auto inner_rect = rect;
inner_rect.move_by(window.position());
// FIXME: This seems slightly wrong; the inner rect shouldn't intersect the border part of the outer rect.
inner_rect.intersect(outer_rect);
invalidate(inner_rect);
}
void WSWindowManager::close_menu(WSMenu& menu)
{
if (current_menu() == &menu)
close_current_menu();
}
void WSWindowManager::close_menubar(WSMenuBar& menubar)
{
if (current_menubar() == &menubar)
set_current_menubar(nullptr);
}
const WSClientConnection* WSWindowManager::active_client() const
{
if (m_active_window)
return m_active_window->client();
return nullptr;
}
void WSWindowManager::notify_client_changed_app_menubar(WSClientConnection& client)
{
if (active_client() == &client)
set_current_menubar(client.app_menubar());
m_menu_manager.refresh();
}
const WSCursor& WSWindowManager::active_cursor() const
{
if (m_drag_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 && m_hovered_window->override_cursor())
return *m_hovered_window->override_cursor();
return *m_arrow_cursor;
}
void WSWindowManager::set_hovered_button(WSButton* button)
{
m_hovered_button = button ? button->make_weak_ptr() : nullptr;
}
void WSWindowManager::set_resize_candidate(WSWindow& window, ResizeDirection direction)
{
m_resize_candidate = window.make_weak_ptr();
m_resize_direction = direction;
}
Rect WSWindowManager::maximized_window_rect(const WSWindow& window) const
{
Rect rect = WSScreen::the().rect();
// Subtract window title bar (leaving the border)
rect.set_y(rect.y() + window.frame().title_bar_rect().height());
rect.set_height(rect.height() - window.frame().title_bar_rect().height());
// Subtract menu bar
rect.set_y(rect.y() + menubar_rect().height());
rect.set_height(rect.height() - menubar_rect().height());
// Subtract taskbar window height if present
const_cast<WSWindowManager*>(this)->for_each_visible_window_of_type_from_back_to_front(WSWindowType::Taskbar, [&rect](WSWindow& taskbar_window) {
rect.set_height(rect.height() - taskbar_window.height());
return IterationDecision::Break;
});
return rect;
}