1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "ClipboardX11.h"
17 #include <iostream>
18 #include <cstring>
19 #include <X11/Xlib.h>
20
SetClipboardData(const std::string & str)21 void ClipboardX11::SetClipboardData(const std::string& str)
22 {
23 display = XOpenDisplay(0);
24 int ret = DefaultScreen(display);
25 window = XCreateSimpleWindow(display, RootWindow(display, ret), 0, 0, 1, 1, 0,
26 BlackPixel(display, ret), WhitePixel(display, ret));
27 targets_atom = XInternAtom(display, "TARGETS", 0);
28 text_atom = XInternAtom(display, "TEXT", 0);
29 UTF8 = XInternAtom(display, "UTF8_STRING", 1);
30 if (UTF8 == None) UTF8 = XA_STRING;
31 Atom selection = XInternAtom(display, "CLIPBOARD", 0);
32 SetCopyData(selection, str, strlen(str.c_str()));
33 }
34
GetClipboardData()35 const std::string ClipboardX11::GetClipboardData()
36 {
37 display = XOpenDisplay(0);
38 int ret = DefaultScreen(display);
39 window = XCreateSimpleWindow(display, RootWindow(display, ret), 0, 0, 1, 1, 0,
40 BlackPixel(display, ret), WhitePixel(display, ret));
41 std::string retStr; // NOLINT
42 UTF8 = XInternAtom(display, "UTF8_STRING", True);
43 if (UTF8 != None) retStr = GetPasteType(UTF8);
44 if (retStr.empty()) retStr = GetPasteType(XA_STRING);
45 return retStr;
46 }
47
SetCopyData(const Atom & selection,const std::string & text,const int size)48 void ClipboardX11::SetCopyData(const Atom& selection, const std::string& text, const int size)
49 {
50 XEvent event;
51 XSetSelectionOwner (display, selection, window, 0);
52 if (XGetSelectionOwner (display, selection) != window) {
53 return;
54 }
55 while (1) {
56 XNextEvent (display, &event);
57 if (event.type == SelectionRequest) {
58 if (event.xselectionrequest.selection != selection) {
59 break;
60 }
61 XSelectionRequestEvent* xsr = &event.xselectionrequest;
62 XSelectionEvent ev = {0};
63 int ret = 0;
64 ev.type = SelectionNotify, ev.display = xsr->display, ev.requestor = xsr->requestor,
65 ev.selection = xsr->selection, ev.time = xsr->time, ev.target = xsr->target,
66 ev.property = xsr->property;
67 if (ev.target == targets_atom) {
68 ret = XChangeProperty(ev.display, ev.requestor, ev.property,
69 XA_ATOM, nFormateProp32, PropModeReplace,
70 (unsigned char*)&UTF8, 1);
71 } else if (ev.target == XA_STRING || ev.target == text_atom) {
72 ret = XChangeProperty(ev.display, ev.requestor, ev.property, XA_STRING,
73 nFormateProp8, PropModeReplace, (unsigned char*)text.c_str(), size);
74 } else if (ev.target == UTF8) {
75 ret = XChangeProperty(ev.display, ev.requestor, ev.property, UTF8,
76 nFormateProp8, PropModeReplace, (unsigned char*)text.c_str(), size);
77 } else {
78 ev.property = None;
79 }
80 if ((ret & nEvenNumber) == 0) {
81 XSendEvent (display, ev.requestor, 0, 0, (XEvent *)&ev);
82 }
83 }
84 }
85 }
86
GetPasteType(const Atom & atom)87 std::string ClipboardX11::GetPasteType(const Atom& atom)
88 {
89 XEvent event;
90 int format;
91 unsigned long num, size;
92 char* data = nullptr;
93 std::string retStr;
94 Atom target, CLIPBOARD = XInternAtom(display, "CLIPBOARD", 0), XSEL_DATA = XInternAtom(display, "XSEL_DATA", 0);
95 XConvertSelection(display, CLIPBOARD, atom, XSEL_DATA, window, CurrentTime);
96 XSync(display, 0);
97 XNextEvent(display, &event);
98 if (event.type == SelectionNotify) {
99 if (event.xselection.selection != CLIPBOARD) {
100 return retStr;
101 }
102 if (event.xselection.property) {
103 XGetWindowProperty(event.xselection.display, event.xselection.requestor, event.xselection.property, 0L,
104 (~0L), 0, AnyPropertyType, &target, &format, &size, &num, (unsigned char**)&data);
105 if (target == UTF8 || target == XA_STRING) {
106 std::string str(data);
107 retStr = str;
108 }
109 XFree(data);
110 XDeleteProperty(event.xselection.display, event.xselection.requestor, event.xselection.property);
111 }
112 }
113 return retStr;
114 }