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display_server_x11.cpp
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/**************************************************************************/
/* display_server_x11.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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. */
/**************************************************************************/
#include "display_server_x11.h"
#ifdef X11_ENABLED
#include "x11/detect_prime_x11.h"
#include "x11/key_mapping_x11.h"
#include "core/config/project_settings.h"
#include "core/math/math_funcs.h"
#include "core/string/print_string.h"
#include "core/string/ustring.h"
#include "drivers/png/png_driver_common.h"
#include "main/main.h"
#if defined(VULKAN_ENABLED)
#include "servers/rendering/renderer_rd/renderer_compositor_rd.h"
#endif
#if defined(GLES3_ENABLED)
#include "drivers/gles3/rasterizer_gles3.h"
#endif
#include <dlfcn.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#undef CursorShape
#include <X11/XKBlib.h>
// ICCCM
#define WM_NormalState 1L // window normal state
#define WM_IconicState 3L // window minimized
// EWMH
#define _NET_WM_STATE_REMOVE 0L // remove/unset property
#define _NET_WM_STATE_ADD 1L // add/set property
// 2.2 is the first release with multitouch
#define XINPUT_CLIENT_VERSION_MAJOR 2
#define XINPUT_CLIENT_VERSION_MINOR 2
#define VALUATOR_ABSX 0
#define VALUATOR_ABSY 1
#define VALUATOR_PRESSURE 2
#define VALUATOR_TILTX 3
#define VALUATOR_TILTY 4
//#define DISPLAY_SERVER_X11_DEBUG_LOGS_ENABLED
#ifdef DISPLAY_SERVER_X11_DEBUG_LOGS_ENABLED
#define DEBUG_LOG_X11(...) printf(__VA_ARGS__)
#else
#define DEBUG_LOG_X11(...)
#endif
static const double abs_resolution_mult = 10000.0;
static const double abs_resolution_range_mult = 10.0;
// Hints for X11 fullscreen
struct Hints {
unsigned long flags = 0;
unsigned long functions = 0;
unsigned long decorations = 0;
long inputMode = 0;
unsigned long status = 0;
};
static String get_atom_name(Display *p_disp, Atom p_atom) {
char *name = XGetAtomName(p_disp, p_atom);
ERR_FAIL_NULL_V_MSG(name, String(), "Atom is invalid.");
String ret;
ret.parse_utf8(name);
XFree(name);
return ret;
}
bool DisplayServerX11::has_feature(Feature p_feature) const {
switch (p_feature) {
#ifndef DISABLE_DEPRECATED
case FEATURE_GLOBAL_MENU: {
return (native_menu && native_menu->has_feature(NativeMenu::FEATURE_GLOBAL_MENU));
} break;
#endif
case FEATURE_SUBWINDOWS:
#ifdef TOUCH_ENABLED
case FEATURE_TOUCHSCREEN:
#endif
case FEATURE_MOUSE:
case FEATURE_MOUSE_WARP:
case FEATURE_CLIPBOARD:
case FEATURE_CURSOR_SHAPE:
case FEATURE_CUSTOM_CURSOR_SHAPE:
case FEATURE_IME:
case FEATURE_WINDOW_TRANSPARENCY:
//case FEATURE_HIDPI:
case FEATURE_ICON:
#ifdef DBUS_ENABLED
case FEATURE_NATIVE_DIALOG_FILE:
case FEATURE_NATIVE_DIALOG_FILE_EXTRA:
#endif
//case FEATURE_NATIVE_DIALOG:
//case FEATURE_NATIVE_DIALOG_INPUT:
//case FEATURE_NATIVE_ICON:
case FEATURE_SWAP_BUFFERS:
#ifdef DBUS_ENABLED
case FEATURE_KEEP_SCREEN_ON:
#endif
case FEATURE_CLIPBOARD_PRIMARY:
case FEATURE_TEXT_TO_SPEECH:
return true;
case FEATURE_SCREEN_CAPTURE:
return !xwayland;
default: {
}
}
return false;
}
String DisplayServerX11::get_name() const {
return "X11";
}
void DisplayServerX11::_update_real_mouse_position(const WindowData &wd) {
Window root_return, child_return;
int root_x, root_y, win_x, win_y;
unsigned int mask_return;
Bool xquerypointer_result = XQueryPointer(x11_display, wd.x11_window, &root_return, &child_return, &root_x, &root_y,
&win_x, &win_y, &mask_return);
if (xquerypointer_result) {
if (win_x > 0 && win_y > 0 && win_x <= wd.size.width && win_y <= wd.size.height) {
last_mouse_pos.x = win_x;
last_mouse_pos.y = win_y;
last_mouse_pos_valid = true;
Input::get_singleton()->set_mouse_position(last_mouse_pos);
}
}
}
bool DisplayServerX11::_refresh_device_info() {
int event_base, error_base;
print_verbose("XInput: Refreshing devices.");
if (!XQueryExtension(x11_display, "XInputExtension", &xi.opcode, &event_base, &error_base)) {
print_verbose("XInput extension not available. Please upgrade your distribution.");
return false;
}
int xi_major_query = XINPUT_CLIENT_VERSION_MAJOR;
int xi_minor_query = XINPUT_CLIENT_VERSION_MINOR;
if (XIQueryVersion(x11_display, &xi_major_query, &xi_minor_query) != Success) {
print_verbose(vformat("XInput 2 not available (server supports %d.%d).", xi_major_query, xi_minor_query));
xi.opcode = 0;
return false;
}
if (xi_major_query < XINPUT_CLIENT_VERSION_MAJOR || (xi_major_query == XINPUT_CLIENT_VERSION_MAJOR && xi_minor_query < XINPUT_CLIENT_VERSION_MINOR)) {
print_verbose(vformat("XInput %d.%d not available (server supports %d.%d). Touch input unavailable.",
XINPUT_CLIENT_VERSION_MAJOR, XINPUT_CLIENT_VERSION_MINOR, xi_major_query, xi_minor_query));
}
xi.absolute_devices.clear();
xi.touch_devices.clear();
xi.pen_inverted_devices.clear();
xi.last_relative_time = 0;
int dev_count;
XIDeviceInfo *info = XIQueryDevice(x11_display, XIAllDevices, &dev_count);
for (int i = 0; i < dev_count; i++) {
XIDeviceInfo *dev = &info[i];
if (!dev->enabled) {
continue;
}
if (!(dev->use == XISlavePointer || dev->use == XIFloatingSlave)) {
continue;
}
bool direct_touch = false;
bool absolute_mode = false;
int resolution_x = 0;
int resolution_y = 0;
double abs_x_min = 0;
double abs_x_max = 0;
double abs_y_min = 0;
double abs_y_max = 0;
double pressure_min = 0;
double pressure_max = 0;
double tilt_x_min = 0;
double tilt_x_max = 0;
double tilt_y_min = 0;
double tilt_y_max = 0;
for (int j = 0; j < dev->num_classes; j++) {
#ifdef TOUCH_ENABLED
if (dev->classes[j]->type == XITouchClass && ((XITouchClassInfo *)dev->classes[j])->mode == XIDirectTouch) {
direct_touch = true;
}
#endif
if (dev->classes[j]->type == XIValuatorClass) {
XIValuatorClassInfo *class_info = (XIValuatorClassInfo *)dev->classes[j];
if (class_info->number == VALUATOR_ABSX && class_info->mode == XIModeAbsolute) {
resolution_x = class_info->resolution;
abs_x_min = class_info->min;
abs_x_max = class_info->max;
absolute_mode = true;
} else if (class_info->number == VALUATOR_ABSY && class_info->mode == XIModeAbsolute) {
resolution_y = class_info->resolution;
abs_y_min = class_info->min;
abs_y_max = class_info->max;
absolute_mode = true;
} else if (class_info->number == VALUATOR_PRESSURE && class_info->mode == XIModeAbsolute) {
pressure_min = class_info->min;
pressure_max = class_info->max;
} else if (class_info->number == VALUATOR_TILTX && class_info->mode == XIModeAbsolute) {
tilt_x_min = class_info->min;
tilt_x_max = class_info->max;
} else if (class_info->number == VALUATOR_TILTY && class_info->mode == XIModeAbsolute) {
tilt_y_min = class_info->min;
tilt_y_max = class_info->max;
}
}
}
if (direct_touch) {
xi.touch_devices.push_back(dev->deviceid);
print_verbose("XInput: Using touch device: " + String(dev->name));
}
if (absolute_mode) {
// If no resolution was reported, use the min/max ranges.
if (resolution_x <= 0) {
resolution_x = (abs_x_max - abs_x_min) * abs_resolution_range_mult;
}
if (resolution_y <= 0) {
resolution_y = (abs_y_max - abs_y_min) * abs_resolution_range_mult;
}
xi.absolute_devices[dev->deviceid] = Vector2(abs_resolution_mult / resolution_x, abs_resolution_mult / resolution_y);
print_verbose("XInput: Absolute pointing device: " + String(dev->name));
}
xi.pressure = 0;
xi.pen_pressure_range[dev->deviceid] = Vector2(pressure_min, pressure_max);
xi.pen_tilt_x_range[dev->deviceid] = Vector2(tilt_x_min, tilt_x_max);
xi.pen_tilt_y_range[dev->deviceid] = Vector2(tilt_y_min, tilt_y_max);
xi.pen_inverted_devices[dev->deviceid] = String(dev->name).findn("eraser") > 0;
}
XIFreeDeviceInfo(info);
#ifdef TOUCH_ENABLED
if (!xi.touch_devices.size()) {
print_verbose("XInput: No touch devices found.");
}
#endif
return true;
}
void DisplayServerX11::_flush_mouse_motion() {
// Block events polling while flushing motion events.
MutexLock mutex_lock(events_mutex);
for (uint32_t event_index = 0; event_index < polled_events.size(); ++event_index) {
XEvent &event = polled_events[event_index];
if (XGetEventData(x11_display, &event.xcookie) && event.xcookie.type == GenericEvent && event.xcookie.extension == xi.opcode) {
XIDeviceEvent *event_data = (XIDeviceEvent *)event.xcookie.data;
if (event_data->evtype == XI_RawMotion) {
XFreeEventData(x11_display, &event.xcookie);
polled_events.remove_at(event_index--);
continue;
}
XFreeEventData(x11_display, &event.xcookie);
break;
}
}
xi.relative_motion.x = 0;
xi.relative_motion.y = 0;
}
#ifdef SPEECHD_ENABLED
bool DisplayServerX11::tts_is_speaking() const {
ERR_FAIL_NULL_V_MSG(tts, false, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
return tts->is_speaking();
}
bool DisplayServerX11::tts_is_paused() const {
ERR_FAIL_NULL_V_MSG(tts, false, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
return tts->is_paused();
}
TypedArray<Dictionary> DisplayServerX11::tts_get_voices() const {
ERR_FAIL_NULL_V_MSG(tts, TypedArray<Dictionary>(), "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
return tts->get_voices();
}
void DisplayServerX11::tts_speak(const String &p_text, const String &p_voice, int p_volume, float p_pitch, float p_rate, int p_utterance_id, bool p_interrupt) {
ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
tts->speak(p_text, p_voice, p_volume, p_pitch, p_rate, p_utterance_id, p_interrupt);
}
void DisplayServerX11::tts_pause() {
ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
tts->pause();
}
void DisplayServerX11::tts_resume() {
ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
tts->resume();
}
void DisplayServerX11::tts_stop() {
ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
tts->stop();
}
#endif
#ifdef DBUS_ENABLED
bool DisplayServerX11::is_dark_mode_supported() const {
return portal_desktop->is_supported();
}
bool DisplayServerX11::is_dark_mode() const {
switch (portal_desktop->get_appearance_color_scheme()) {
case 1:
// Prefers dark theme.
return true;
case 2:
// Prefers light theme.
return false;
default:
// Preference unknown.
return false;
}
}
void DisplayServerX11::set_system_theme_change_callback(const Callable &p_callable) {
portal_desktop->set_system_theme_change_callback(p_callable);
}
Error DisplayServerX11::file_dialog_show(const String &p_title, const String &p_current_directory, const String &p_filename, bool p_show_hidden, FileDialogMode p_mode, const Vector<String> &p_filters, const Callable &p_callback) {
WindowID window_id = last_focused_window;
if (!windows.has(window_id)) {
window_id = MAIN_WINDOW_ID;
}
String xid = vformat("x11:%x", (uint64_t)windows[window_id].x11_window);
return portal_desktop->file_dialog_show(last_focused_window, xid, p_title, p_current_directory, String(), p_filename, p_mode, p_filters, TypedArray<Dictionary>(), p_callback, false);
}
Error DisplayServerX11::file_dialog_with_options_show(const String &p_title, const String &p_current_directory, const String &p_root, const String &p_filename, bool p_show_hidden, FileDialogMode p_mode, const Vector<String> &p_filters, const TypedArray<Dictionary> &p_options, const Callable &p_callback) {
WindowID window_id = last_focused_window;
if (!windows.has(window_id)) {
window_id = MAIN_WINDOW_ID;
}
String xid = vformat("x11:%x", (uint64_t)windows[window_id].x11_window);
return portal_desktop->file_dialog_show(last_focused_window, xid, p_title, p_current_directory, p_root, p_filename, p_mode, p_filters, p_options, p_callback, true);
}
#endif
void DisplayServerX11::mouse_set_mode(MouseMode p_mode) {
_THREAD_SAFE_METHOD_
if (p_mode == mouse_mode) {
return;
}
if (mouse_mode == MOUSE_MODE_CAPTURED || mouse_mode == MOUSE_MODE_CONFINED || mouse_mode == MOUSE_MODE_CONFINED_HIDDEN) {
XUngrabPointer(x11_display, CurrentTime);
}
// The only modes that show a cursor are VISIBLE and CONFINED
bool show_cursor = (p_mode == MOUSE_MODE_VISIBLE || p_mode == MOUSE_MODE_CONFINED);
bool previously_shown = (mouse_mode == MOUSE_MODE_VISIBLE || mouse_mode == MOUSE_MODE_CONFINED);
if (show_cursor && !previously_shown) {
WindowID window_id = get_window_at_screen_position(mouse_get_position());
if (window_id != INVALID_WINDOW_ID && window_mouseover_id != window_id) {
if (window_mouseover_id != INVALID_WINDOW_ID) {
_send_window_event(windows[window_mouseover_id], WINDOW_EVENT_MOUSE_EXIT);
}
window_mouseover_id = window_id;
_send_window_event(windows[window_id], WINDOW_EVENT_MOUSE_ENTER);
}
}
for (const KeyValue<WindowID, WindowData> &E : windows) {
if (show_cursor) {
XDefineCursor(x11_display, E.value.x11_window, cursors[current_cursor]); // show cursor
} else {
XDefineCursor(x11_display, E.value.x11_window, null_cursor); // hide cursor
}
}
mouse_mode = p_mode;
if (mouse_mode == MOUSE_MODE_CAPTURED || mouse_mode == MOUSE_MODE_CONFINED || mouse_mode == MOUSE_MODE_CONFINED_HIDDEN) {
//flush pending motion events
_flush_mouse_motion();
WindowID window_id = _get_focused_window_or_popup();
if (!windows.has(window_id)) {
window_id = MAIN_WINDOW_ID;
}
WindowData &window = windows[window_id];
if (XGrabPointer(
x11_display, window.x11_window, True,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
GrabModeAsync, GrabModeAsync, window.x11_window, None, CurrentTime) != GrabSuccess) {
ERR_PRINT("NO GRAB");
}
if (mouse_mode == MOUSE_MODE_CAPTURED) {
center.x = window.size.width / 2;
center.y = window.size.height / 2;
XWarpPointer(x11_display, None, window.x11_window,
0, 0, 0, 0, (int)center.x, (int)center.y);
Input::get_singleton()->set_mouse_position(center);
}
} else {
do_mouse_warp = false;
}
XFlush(x11_display);
}
DisplayServerX11::MouseMode DisplayServerX11::mouse_get_mode() const {
return mouse_mode;
}
void DisplayServerX11::warp_mouse(const Point2i &p_position) {
_THREAD_SAFE_METHOD_
if (mouse_mode == MOUSE_MODE_CAPTURED) {
last_mouse_pos = p_position;
} else {
WindowID window_id = _get_focused_window_or_popup();
if (!windows.has(window_id)) {
window_id = MAIN_WINDOW_ID;
}
XWarpPointer(x11_display, None, windows[window_id].x11_window,
0, 0, 0, 0, (int)p_position.x, (int)p_position.y);
}
}
Point2i DisplayServerX11::mouse_get_position() const {
int number_of_screens = XScreenCount(x11_display);
for (int i = 0; i < number_of_screens; i++) {
Window root, child;
int root_x, root_y, win_x, win_y;
unsigned int mask;
if (XQueryPointer(x11_display, XRootWindow(x11_display, i), &root, &child, &root_x, &root_y, &win_x, &win_y, &mask)) {
XWindowAttributes root_attrs;
XGetWindowAttributes(x11_display, root, &root_attrs);
return Vector2i(root_attrs.x + root_x, root_attrs.y + root_y);
}
}
return Vector2i();
}
BitField<MouseButtonMask> DisplayServerX11::mouse_get_button_state() const {
int number_of_screens = XScreenCount(x11_display);
for (int i = 0; i < number_of_screens; i++) {
Window root, child;
int root_x, root_y, win_x, win_y;
unsigned int mask;
if (XQueryPointer(x11_display, XRootWindow(x11_display, i), &root, &child, &root_x, &root_y, &win_x, &win_y, &mask)) {
BitField<MouseButtonMask> last_button_state = 0;
if (mask & Button1Mask) {
last_button_state.set_flag(MouseButtonMask::LEFT);
}
if (mask & Button2Mask) {
last_button_state.set_flag(MouseButtonMask::MIDDLE);
}
if (mask & Button3Mask) {
last_button_state.set_flag(MouseButtonMask::RIGHT);
}
if (mask & Button4Mask) {
last_button_state.set_flag(MouseButtonMask::MB_XBUTTON1);
}
if (mask & Button5Mask) {
last_button_state.set_flag(MouseButtonMask::MB_XBUTTON2);
}
return last_button_state;
}
}
return 0;
}
void DisplayServerX11::clipboard_set(const String &p_text) {
_THREAD_SAFE_METHOD_
{
// The clipboard content can be accessed while polling for events.
MutexLock mutex_lock(events_mutex);
internal_clipboard = p_text;
}
XSetSelectionOwner(x11_display, XA_PRIMARY, windows[MAIN_WINDOW_ID].x11_window, CurrentTime);
XSetSelectionOwner(x11_display, XInternAtom(x11_display, "CLIPBOARD", 0), windows[MAIN_WINDOW_ID].x11_window, CurrentTime);
}
void DisplayServerX11::clipboard_set_primary(const String &p_text) {
_THREAD_SAFE_METHOD_
if (!p_text.is_empty()) {
{
// The clipboard content can be accessed while polling for events.
MutexLock mutex_lock(events_mutex);
internal_clipboard_primary = p_text;
}
XSetSelectionOwner(x11_display, XA_PRIMARY, windows[MAIN_WINDOW_ID].x11_window, CurrentTime);
XSetSelectionOwner(x11_display, XInternAtom(x11_display, "PRIMARY", 0), windows[MAIN_WINDOW_ID].x11_window, CurrentTime);
}
}
Bool DisplayServerX11::_predicate_clipboard_selection(Display *display, XEvent *event, XPointer arg) {
if (event->type == SelectionNotify && event->xselection.requestor == *(Window *)arg) {
return True;
} else {
return False;
}
}
Bool DisplayServerX11::_predicate_clipboard_incr(Display *display, XEvent *event, XPointer arg) {
if (event->type == PropertyNotify && event->xproperty.state == PropertyNewValue && event->xproperty.atom == *(Atom *)arg) {
return True;
} else {
return False;
}
}
String DisplayServerX11::_clipboard_get_impl(Atom p_source, Window x11_window, Atom target) const {
String ret;
Window selection_owner = XGetSelectionOwner(x11_display, p_source);
if (selection_owner == x11_window) {
static const char *target_type = "PRIMARY";
if (p_source != None && get_atom_name(x11_display, p_source) == target_type) {
return internal_clipboard_primary;
} else {
return internal_clipboard;
}
}
if (selection_owner != None) {
// Block events polling while processing selection events.
MutexLock mutex_lock(events_mutex);
Atom selection = XA_PRIMARY;
XConvertSelection(x11_display, p_source, target, selection,
x11_window, CurrentTime);
XFlush(x11_display);
// Blocking wait for predicate to be True and remove the event from the queue.
XEvent event;
XIfEvent(x11_display, &event, _predicate_clipboard_selection, (XPointer)&x11_window);
// Do not get any data, see how much data is there.
Atom type;
int format, result;
unsigned long len, bytes_left, dummy;
unsigned char *data;
XGetWindowProperty(x11_display, x11_window,
selection, // Tricky..
0, 0, // offset - len
0, // Delete 0==FALSE
AnyPropertyType, // flag
&type, // return type
&format, // return format
&len, &bytes_left, // data length
&data);
if (data) {
XFree(data);
}
if (type == XInternAtom(x11_display, "INCR", 0)) {
// Data is going to be received incrementally.
DEBUG_LOG_X11("INCR selection started.\n");
LocalVector<uint8_t> incr_data;
uint32_t data_size = 0;
bool success = false;
// Delete INCR property to notify the owner.
XDeleteProperty(x11_display, x11_window, type);
// Process events from the queue.
bool done = false;
while (!done) {
if (!_wait_for_events()) {
// Error or timeout, abort.
break;
}
// Non-blocking wait for next event and remove it from the queue.
XEvent ev;
while (XCheckIfEvent(x11_display, &ev, _predicate_clipboard_incr, (XPointer)&selection)) {
result = XGetWindowProperty(x11_display, x11_window,
selection, // selection type
0, LONG_MAX, // offset - len
True, // delete property to notify the owner
AnyPropertyType, // flag
&type, // return type
&format, // return format
&len, &bytes_left, // data length
&data);
DEBUG_LOG_X11("PropertyNotify: len=%lu, format=%i\n", len, format);
if (result == Success) {
if (data && (len > 0)) {
uint32_t prev_size = incr_data.size();
if (prev_size == 0) {
// First property contains initial data size.
unsigned long initial_size = *(unsigned long *)data;
incr_data.resize(initial_size);
} else {
// New chunk, resize to be safe and append data.
incr_data.resize(MAX(data_size + len, prev_size));
memcpy(incr_data.ptr() + data_size, data, len);
data_size += len;
}
} else {
// Last chunk, process finished.
done = true;
success = true;
}
} else {
print_verbose("Failed to get selection data chunk.");
done = true;
}
if (data) {
XFree(data);
}
if (done) {
break;
}
}
}
if (success && (data_size > 0)) {
ret.parse_utf8((const char *)incr_data.ptr(), data_size);
}
} else if (bytes_left > 0) {
// Data is ready and can be processed all at once.
result = XGetWindowProperty(x11_display, x11_window,
selection, 0, bytes_left, 0,
AnyPropertyType, &type, &format,
&len, &dummy, &data);
if (result == Success) {
ret.parse_utf8((const char *)data);
} else {
print_verbose("Failed to get selection data.");
}
if (data) {
XFree(data);
}
}
}
return ret;
}
Atom DisplayServerX11::_clipboard_get_image_target(Atom p_source, Window x11_window) const {
Atom target = XInternAtom(x11_display, "TARGETS", 0);
Atom png = XInternAtom(x11_display, "image/png", 0);
Atom *valid_targets = nullptr;
unsigned long atom_count = 0;
Window selection_owner = XGetSelectionOwner(x11_display, p_source);
if (selection_owner != None && selection_owner != x11_window) {
// Block events polling while processing selection events.
MutexLock mutex_lock(events_mutex);
Atom selection = XA_PRIMARY;
XConvertSelection(x11_display, p_source, target, selection, x11_window, CurrentTime);
XFlush(x11_display);
// Blocking wait for predicate to be True and remove the event from the queue.
XEvent event;
XIfEvent(x11_display, &event, _predicate_clipboard_selection, (XPointer)&x11_window);
// Do not get any data, see how much data is there.
Atom type;
int format, result;
unsigned long len, bytes_left, dummy;
XGetWindowProperty(x11_display, x11_window,
selection, // Tricky..
0, 0, // offset - len
0, // Delete 0==FALSE
XA_ATOM, // flag
&type, // return type
&format, // return format
&len, &bytes_left, // data length
(unsigned char **)&valid_targets);
if (valid_targets) {
XFree(valid_targets);
valid_targets = nullptr;
}
if (type == XA_ATOM && bytes_left > 0) {
// Data is ready and can be processed all at once.
result = XGetWindowProperty(x11_display, x11_window,
selection, 0, bytes_left / 4, 0,
XA_ATOM, &type, &format,
&len, &dummy, (unsigned char **)&valid_targets);
if (result == Success) {
atom_count = len;
} else {
print_verbose("Failed to get selection data.");
return None;
}
} else {
return None;
}
} else {
return None;
}
for (unsigned long i = 0; i < atom_count; i++) {
Atom atom = valid_targets[i];
if (atom == png) {
XFree(valid_targets);
return png;
}
}
XFree(valid_targets);
return None;
}
String DisplayServerX11::_clipboard_get(Atom p_source, Window x11_window) const {
String ret;
Atom utf8_atom = XInternAtom(x11_display, "UTF8_STRING", True);
if (utf8_atom != None) {
ret = _clipboard_get_impl(p_source, x11_window, utf8_atom);
}
if (ret.is_empty()) {
ret = _clipboard_get_impl(p_source, x11_window, XA_STRING);
}
return ret;
}
String DisplayServerX11::clipboard_get() const {
_THREAD_SAFE_METHOD_
String ret;
ret = _clipboard_get(XInternAtom(x11_display, "CLIPBOARD", 0), windows[MAIN_WINDOW_ID].x11_window);
if (ret.is_empty()) {
ret = _clipboard_get(XA_PRIMARY, windows[MAIN_WINDOW_ID].x11_window);
}
return ret;
}
String DisplayServerX11::clipboard_get_primary() const {
_THREAD_SAFE_METHOD_
String ret;
ret = _clipboard_get(XInternAtom(x11_display, "PRIMARY", 0), windows[MAIN_WINDOW_ID].x11_window);
if (ret.is_empty()) {
ret = _clipboard_get(XA_PRIMARY, windows[MAIN_WINDOW_ID].x11_window);
}
return ret;
}
Ref<Image> DisplayServerX11::clipboard_get_image() const {
_THREAD_SAFE_METHOD_
Atom clipboard = XInternAtom(x11_display, "CLIPBOARD", 0);
Window x11_window = windows[MAIN_WINDOW_ID].x11_window;
Ref<Image> ret;
Atom target = _clipboard_get_image_target(clipboard, x11_window);
if (target == None) {
return ret;
}
Window selection_owner = XGetSelectionOwner(x11_display, clipboard);
if (selection_owner != None && selection_owner != x11_window) {
// Block events polling while processing selection events.
MutexLock mutex_lock(events_mutex);
// Identifier for the property the other window
// will send the converted data to.
Atom transfer_prop = XA_PRIMARY;
XConvertSelection(x11_display,
clipboard, // source selection
target, // format to convert to
transfer_prop, // output property
x11_window, CurrentTime);
XFlush(x11_display);
// Blocking wait for predicate to be True and remove the event from the queue.
XEvent event;
XIfEvent(x11_display, &event, _predicate_clipboard_selection, (XPointer)&x11_window);
// Do not get any data, see how much data is there.
Atom type;
int format, result;
unsigned long len, bytes_left, dummy;
unsigned char *data;
XGetWindowProperty(x11_display, x11_window,
transfer_prop, // Property data is transferred through
0, 1, // offset, len (4 so we can get the size if INCR is used)
0, // Delete 0==FALSE
AnyPropertyType, // flag
&type, // return type
&format, // return format
&len, &bytes_left, // data length
&data);
if (type == XInternAtom(x11_display, "INCR", 0)) {
ERR_FAIL_COND_V_MSG(len != 1, ret, "Incremental transfer initial value was not length.");
// Data is going to be received incrementally.
DEBUG_LOG_X11("INCR selection started.\n");
LocalVector<uint8_t> incr_data;
uint32_t data_size = 0;
bool success = false;
// Initial response is the lower bound of the length of the transferred data.
incr_data.resize(*(unsigned long *)data);
XFree(data);
data = nullptr;
// Delete INCR property to notify the owner.
XDeleteProperty(x11_display, x11_window, transfer_prop);
// Process events from the queue.
bool done = false;
while (!done) {
if (!_wait_for_events()) {
// Error or timeout, abort.
break;
}
// Non-blocking wait for next event and remove it from the queue.
XEvent ev;
while (XCheckIfEvent(x11_display, &ev, _predicate_clipboard_incr, (XPointer)&transfer_prop)) {
result = XGetWindowProperty(x11_display, x11_window,
transfer_prop, // output property
0, LONG_MAX, // offset - len
True, // delete property to notify the owner
AnyPropertyType, // flag
&type, // return type
&format, // return format
&len, &bytes_left, // data length
&data);
DEBUG_LOG_X11("PropertyNotify: len=%lu, format=%i\n", len, format);
if (result == Success) {
if (data && (len > 0)) {
uint32_t prev_size = incr_data.size();
// New chunk, resize to be safe and append data.
incr_data.resize(MAX(data_size + len, prev_size));
memcpy(incr_data.ptr() + data_size, data, len);
data_size += len;
} else if (!(format == 0 && len == 0)) {
// For unclear reasons the first GetWindowProperty always returns a length and format of 0.
// Otherwise, last chunk, process finished.
done = true;
success = true;
}
} else {
print_verbose("Failed to get selection data chunk.");
done = true;
}
if (data) {
XFree(data);
data = nullptr;
}
if (done) {
break;
}
}
}
if (success && (data_size > 0)) {
ret.instantiate();
PNGDriverCommon::png_to_image(incr_data.ptr(), incr_data.size(), false, ret);
}
} else if (bytes_left > 0) {
if (data) {
XFree(data);
data = nullptr;
}
// Data is ready and can be processed all at once.
result = XGetWindowProperty(x11_display, x11_window,
transfer_prop, 0, bytes_left + 4, 0,
AnyPropertyType, &type, &format,
&len, &dummy, &data);
if (result == Success) {
ret.instantiate();
PNGDriverCommon::png_to_image((uint8_t *)data, bytes_left, false, ret);
} else {
print_verbose("Failed to get selection data.");
}
if (data) {
XFree(data);
}
}
}
return ret;
}
bool DisplayServerX11::clipboard_has_image() const {
Atom target = _clipboard_get_image_target(
XInternAtom(x11_display, "CLIPBOARD", 0),
windows[MAIN_WINDOW_ID].x11_window);
return target != None;
}
Bool DisplayServerX11::_predicate_clipboard_save_targets(Display *display, XEvent *event, XPointer arg) {
if (event->xany.window == *(Window *)arg) {
return (event->type == SelectionRequest) ||
(event->type == SelectionNotify);
} else {
return False;
}
}
void DisplayServerX11::_clipboard_transfer_ownership(Atom p_source, Window x11_window) const {
_THREAD_SAFE_METHOD_
Window selection_owner = XGetSelectionOwner(x11_display, p_source);
if (selection_owner != x11_window) {
return;
}
// Block events polling while processing selection events.
MutexLock mutex_lock(events_mutex);
Atom clipboard_manager = XInternAtom(x11_display, "CLIPBOARD_MANAGER", False);
Atom save_targets = XInternAtom(x11_display, "SAVE_TARGETS", False);
XConvertSelection(x11_display, clipboard_manager, save_targets, None,
x11_window, CurrentTime);