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virtualx-engine/platform/linuxbsd/display_server_x11.h
PouleyKetchoupp 96e8b904cf Implement SAVE_TARGETS mechanism for Linux clipboard 
Allows sending the clipboard content to the clipboard manager on exit to
keep the content when using a clipboard manager that doesn't
automatically makes a backup when copying.

MULTIPLE selection mechanism also had to be implemented, because in this
case, the clipboard manager might request multiple selection targets at
once.

Known use case: Ubuntu with XFCE4
2020-10-09 21:12:56 +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);
Atom _process_selection_request_target(Atom p_target, Window p_requestor, Atom p_property) const;
void _handle_selection_request_event(XSelectionRequestEvent *p_event) const;
String _clipboard_get_impl(Atom p_source, Window x11_window, Atom target) const;
String _clipboard_get(Atom p_source, Window x11_window) const;
void _clipboard_transfer_ownership(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);
bool _wait_for_events() const;
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);
static Bool _predicate_clipboard_save_targets(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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