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virtualx-engine/platform/linuxbsd/display_server_x11.h
PouleyKetchoupp 5a0376f969 Fix delay to process clipboard content from Godot in other programs 
When pasting clipboard content from Godot to other applications,
multiple SelectionRequest events are sent to Godot in order to access
the data. It could take a long time before the data is ready for the
other app because events were processed one by one on the main thread,
especially when Godot is unfocused and runs at low frequency.

With this change, SelectionRequest events are directly handled on the
separate event polling thread to minimize this delay.

This change also replaces clipboard_get() calls in SelectionRequest with
a direct access to internal_clipboard, since in this case we know Godot
is the owner of the clipboard content and it's not necessary to query
the x server for it.
2020-09-25 16:40:04 +02:00

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/*************************************************************************/
/* display_server_x11.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef DISPLAY_SERVER_X11_H
#define DISPLAY_SERVER_X11_H
#ifdef X11_ENABLED
#include "servers/display_server.h"
#include "core/input/input.h"
#include "core/local_vector.h"
#include "drivers/alsa/audio_driver_alsa.h"
#include "drivers/alsamidi/midi_driver_alsamidi.h"
#include "drivers/pulseaudio/audio_driver_pulseaudio.h"
#include "drivers/unix/os_unix.h"
#include "joypad_linux.h"
#include "servers/audio_server.h"
#include "servers/rendering/rasterizer.h"
#include "servers/rendering_server.h"
#if defined(OPENGL_ENABLED)
#include "context_gl_x11.h"
#endif
#if defined(VULKAN_ENABLED)
#include "drivers/vulkan/rendering_device_vulkan.h"
#include "platform/linuxbsd/vulkan_context_x11.h"
#endif
#include <X11/Xcursor/Xcursor.h>
#include <X11/Xlib.h>
#include <X11/extensions/XInput2.h>
#include <X11/extensions/Xrandr.h>
#include <X11/keysym.h>
// Hints for X11 fullscreen
typedef struct {
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long inputMode;
unsigned long status;
} Hints;
typedef struct _xrr_monitor_info {
Atom name;
Bool primary;
Bool automatic;
int noutput;
int x;
int y;
int width;
int height;
int mwidth;
int mheight;
RROutput *outputs;
} xrr_monitor_info;
#undef CursorShape
class DisplayServerX11 : public DisplayServer {
//No need to register, it's platform-specific and nothing is added
//GDCLASS(DisplayServerX11, DisplayServer)
_THREAD_SAFE_CLASS_
Atom wm_delete;
Atom xdnd_enter;
Atom xdnd_position;
Atom xdnd_status;
Atom xdnd_action_copy;
Atom xdnd_drop;
Atom xdnd_finished;
Atom xdnd_selection;
Atom xdnd_aware;
Atom requested;
int xdnd_version;
#if defined(OPENGL_ENABLED)
ContextGL_X11 *context_gles2;
#endif
#if defined(VULKAN_ENABLED)
VulkanContextX11 *context_vulkan;
RenderingDeviceVulkan *rendering_device_vulkan;
#endif
struct WindowData {
Window x11_window;
::XIC xic;
Size2i min_size;
Size2i max_size;
Point2i position;
Size2i size;
Point2i im_position;
bool im_active = false;
Callable rect_changed_callback;
Callable event_callback;
Callable input_event_callback;
Callable input_text_callback;
Callable drop_files_callback;
WindowID transient_parent = INVALID_WINDOW_ID;
Set<WindowID> transient_children;
ObjectID instance_id;
bool menu_type = false;
bool no_focus = false;
//better to guess on the fly, given WM can change it
//WindowMode mode;
bool fullscreen = false; //OS can't exit from this mode
bool on_top = false;
bool borderless = false;
bool resize_disabled = false;
Vector2i last_position_before_fs;
bool focused = false;
bool minimized = false;
unsigned int focus_order = 0;
};
Map<WindowID, WindowData> windows;
WindowID window_id_counter = MAIN_WINDOW_ID;
WindowID _create_window(WindowMode p_mode, uint32_t p_flags, const Rect2i &p_rect);
String internal_clipboard;
Window xdnd_source_window;
::Display *x11_display;
char *xmbstring;
int xmblen;
unsigned long last_timestamp;
::Time last_keyrelease_time;
::XIM xim;
::XIMStyle xim_style;
static void _xim_destroy_callback(::XIM im, ::XPointer client_data,
::XPointer call_data);
Point2i last_mouse_pos;
bool last_mouse_pos_valid;
Point2i last_click_pos;
uint64_t last_click_ms;
int last_click_button_index;
uint32_t last_button_state;
bool app_focused = false;
uint64_t time_since_no_focus = 0;
struct {
int opcode;
Vector<int> touch_devices;
Map<int, Vector2> absolute_devices;
Map<int, Vector2> pen_pressure_range;
Map<int, Vector2> pen_tilt_x_range;
Map<int, Vector2> pen_tilt_y_range;
XIEventMask all_event_mask;
Map<int, Vector2> state;
double pressure;
bool pressure_supported;
Vector2 tilt;
Vector2 mouse_pos_to_filter;
Vector2 relative_motion;
Vector2 raw_pos;
Vector2 old_raw_pos;
::Time last_relative_time;
} xi;
bool _refresh_device_info();
unsigned int _get_mouse_button_state(unsigned int p_x11_button, int p_x11_type);
void _get_key_modifier_state(unsigned int p_x11_state, Ref<InputEventWithModifiers> state);
void _flush_mouse_motion();
MouseMode mouse_mode;
Point2i center;
void _handle_key_event(WindowID p_window, XKeyEvent *p_event, LocalVector<XEvent> &p_events, uint32_t &p_event_index, bool p_echo = false);
void _handle_selection_request_event(XSelectionRequestEvent *p_event);
String _clipboard_get_impl(Atom p_source, Window x11_window, Atom target) const;
String _clipboard_get(Atom p_source, Window x11_window) const;
//bool minimized;
//bool window_has_focus;
bool do_mouse_warp;
const char *cursor_theme;
int cursor_size;
XcursorImage *img[CURSOR_MAX];
Cursor cursors[CURSOR_MAX];
Cursor null_cursor;
CursorShape current_cursor;
Map<CursorShape, Vector<Variant>> cursors_cache;
bool layered_window;
String rendering_driver;
//bool window_focused;
//void set_wm_border(bool p_enabled);
void set_wm_fullscreen(bool p_enabled);
void set_wm_above(bool p_enabled);
typedef xrr_monitor_info *(*xrr_get_monitors_t)(Display *dpy, Window window, Bool get_active, int *nmonitors);
typedef void (*xrr_free_monitors_t)(xrr_monitor_info *monitors);
xrr_get_monitors_t xrr_get_monitors;
xrr_free_monitors_t xrr_free_monitors;
void *xrandr_handle;
Bool xrandr_ext_ok;
struct Property {
unsigned char *data;
int format, nitems;
Atom type;
};
static Property _read_property(Display *p_display, Window p_window, Atom p_property);
void _update_real_mouse_position(const WindowData &wd);
bool _window_maximize_check(WindowID p_window, const char *p_atom_name) const;
void _update_size_hints(WindowID p_window);
void _set_wm_fullscreen(WindowID p_window, bool p_enabled);
void _set_wm_maximized(WindowID p_window, bool p_enabled);
void _update_context(WindowData &wd);
Context context = CONTEXT_ENGINE;
void _send_window_event(const WindowData &wd, WindowEvent p_event);
static void _dispatch_input_events(const Ref<InputEvent> &p_event);
void _dispatch_input_event(const Ref<InputEvent> &p_event);
mutable Mutex events_mutex;
Thread *events_thread = nullptr;
bool events_thread_done = false;
LocalVector<XEvent> polled_events;
static void _poll_events_thread(void *ud);
void _poll_events();
static Bool _predicate_all_events(Display *display, XEvent *event, XPointer arg);
static Bool _predicate_clipboard_selection(Display *display, XEvent *event, XPointer arg);
protected:
void _window_changed(XEvent *event);
public:
virtual bool has_feature(Feature p_feature) const;
virtual String get_name() const;
virtual void alert(const String &p_alert, const String &p_title = "ALERT!");
virtual void mouse_set_mode(MouseMode p_mode);
virtual MouseMode mouse_get_mode() const;
virtual void mouse_warp_to_position(const Point2i &p_to);
virtual Point2i mouse_get_position() const;
virtual Point2i mouse_get_absolute_position() const;
virtual int mouse_get_button_state() const;
virtual void clipboard_set(const String &p_text);
virtual String clipboard_get() const;
virtual int get_screen_count() const;
virtual Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
virtual Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
virtual Rect2i screen_get_usable_rect(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
virtual int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
virtual bool screen_is_touchscreen(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
virtual Vector<DisplayServer::WindowID> get_window_list() const;
virtual WindowID create_sub_window(WindowMode p_mode, uint32_t p_flags, const Rect2i &p_rect = Rect2i());
virtual void show_window(WindowID p_id);
virtual void delete_sub_window(WindowID p_id);
virtual WindowID get_window_at_screen_position(const Point2i &p_position) const;
virtual void window_attach_instance_id(ObjectID p_instance, WindowID p_window = MAIN_WINDOW_ID);
virtual ObjectID window_get_attached_instance_id(WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_mouse_passthrough(const Vector<Vector2> &p_region, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_window_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_input_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_input_text_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_drop_files_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID);
virtual int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID);
virtual Point2i window_get_position(WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_set_position(const Point2i &p_position, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_max_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID);
virtual Size2i window_get_max_size(WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_set_transient(WindowID p_window, WindowID p_parent);
virtual void window_set_min_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID);
virtual Size2i window_get_min_size(WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_set_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID);
virtual Size2i window_get_size(WindowID p_window = MAIN_WINDOW_ID) const;
virtual Size2i window_get_real_size(WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_set_mode(WindowMode p_mode, WindowID p_window = MAIN_WINDOW_ID);
virtual WindowMode window_get_mode(WindowID p_window = MAIN_WINDOW_ID) const;
virtual bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window = MAIN_WINDOW_ID);
virtual bool window_get_flag(WindowFlags p_flag, WindowID p_window = MAIN_WINDOW_ID) const;
virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID);
virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID);
virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const;
virtual bool can_any_window_draw() const;
virtual void window_set_ime_active(const bool p_active, WindowID p_window = MAIN_WINDOW_ID);
virtual void window_set_ime_position(const Point2i &p_pos, WindowID p_window = MAIN_WINDOW_ID);
virtual void cursor_set_shape(CursorShape p_shape);
virtual CursorShape cursor_get_shape() const;
virtual void cursor_set_custom_image(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot);
virtual int keyboard_get_layout_count() const;
virtual int keyboard_get_current_layout() const;
virtual void keyboard_set_current_layout(int p_index);
virtual String keyboard_get_layout_language(int p_index) const;
virtual String keyboard_get_layout_name(int p_index) const;
virtual void process_events();
virtual void release_rendering_thread();
virtual void make_rendering_thread();
virtual void swap_buffers();
virtual void set_context(Context p_context);
virtual void set_native_icon(const String &p_filename);
virtual void set_icon(const Ref<Image> &p_icon);
static DisplayServer *create_func(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
static Vector<String> get_rendering_drivers_func();
static void register_x11_driver();
DisplayServerX11(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
~DisplayServerX11();
};
#endif // X11 enabled
#endif // DISPLAY_SERVER_X11_H
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