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 using namespace std;
21
SetClipboardData(const string & str)22 void ClipboardX11::SetClipboardData(const string& str)
23 {
24 display = XOpenDisplay(0);
25 int ret = DefaultScreen(display);
26 window = XCreateSimpleWindow(display, RootWindow(display, ret), 0, 0, 1, 1, 0,
27 BlackPixel(display, ret), WhitePixel(display, ret));
28 targets_atom = XInternAtom(display, "TARGETS", 0);
29 text_atom = XInternAtom(display, "TEXT", 0);
30 UTF8 = XInternAtom(display, "UTF8_STRING", 1);
31 if (UTF8 == None) UTF8 = XA_STRING;
32 Atom selection = XInternAtom(display, "CLIPBOARD", 0);
33 SetCopyData(selection, str, strlen(str.c_str()));
34 }
35
GetClipboardData()36 const string ClipboardX11::GetClipboardData()
37 {
38 display = XOpenDisplay(0);
39 int ret = DefaultScreen(display);
40 window = XCreateSimpleWindow(display, RootWindow(display, ret), 0, 0, 1, 1, 0,
41 BlackPixel(display, ret), WhitePixel(display, ret));
42 string retStr; // NOLINT
43 UTF8 = XInternAtom(display, "UTF8_STRING", True);
44 if (UTF8 != None) retStr = GetPasteType(UTF8);
45 if (retStr.empty()) retStr = GetPasteType(XA_STRING);
46 return retStr;
47 }
48
SetCopyData(const Atom & selection,const string & text,const int size)49 void ClipboardX11::SetCopyData(const Atom& selection, const string& text, const int size)
50 {
51 XEvent event;
52 XSetSelectionOwner (display, selection, window, 0);
53 if (XGetSelectionOwner (display, selection) != window) {
54 return;
55 }
56 while (1) {
57 XNextEvent (display, &event);
58 if (event.type == SelectionRequest) {
59 if (event.xselectionrequest.selection != selection) {
60 break;
61 }
62 XSelectionRequestEvent* xsr = &event.xselectionrequest;
63 XSelectionEvent ev = {0};
64 int ret = 0;
65 ev.type = SelectionNotify, ev.display = xsr->display, ev.requestor = xsr->requestor,
66 ev.selection = xsr->selection, ev.time = xsr->time, ev.target = xsr->target,
67 ev.property = xsr->property;
68 if (ev.target == targets_atom) {
69 ret = XChangeProperty(ev.display, ev.requestor, ev.property,
70 XA_ATOM, nFormateProp32, PropModeReplace,
71 (unsigned char*)&UTF8, 1);
72 } else if (ev.target == XA_STRING || ev.target == text_atom) {
73 ret = XChangeProperty(ev.display, ev.requestor, ev.property, XA_STRING,
74 nFormateProp8, PropModeReplace, (unsigned char*)text.c_str(), size);
75 } else if (ev.target == UTF8) {
76 ret = XChangeProperty(ev.display, ev.requestor, ev.property, UTF8,
77 nFormateProp8, PropModeReplace, (unsigned char*)text.c_str(), size);
78 } else {
79 ev.property = None;
80 }
81 if ((ret & nEvenNumber) == 0) {
82 XSendEvent (display, ev.requestor, 0, 0, (XEvent *)&ev);
83 }
84 }
85 }
86 }
87
GetPasteType(const Atom & atom)88 string ClipboardX11::GetPasteType(const Atom& atom)
89 {
90 XEvent event;
91 int format;
92 unsigned long num, size;
93 char* data = nullptr;
94 string retStr;
95 Atom target, CLIPBOARD = XInternAtom(display, "CLIPBOARD", 0), XSEL_DATA = XInternAtom(display, "XSEL_DATA", 0);
96 XConvertSelection(display, CLIPBOARD, atom, XSEL_DATA, window, CurrentTime);
97 XSync(display, 0);
98 XNextEvent(display, &event);
99 if (event.type == SelectionNotify) {
100 if (event.xselection.selection != CLIPBOARD) {
101 return retStr;
102 }
103 if (event.xselection.property) {
104 XGetWindowProperty(event.xselection.display, event.xselection.requestor, event.xselection.property, 0L,
105 (~0L), 0, AnyPropertyType, &target, &format, &size, &num, (unsigned char**)&data);
106 if (target == UTF8 || target == XA_STRING) {
107 string str(data);
108 retStr = str;
109 }
110 XFree(data);
111 XDeleteProperty(event.xselection.display, event.xselection.requestor, event.xselection.property);
112 }
113 }
114 return retStr;
115 }