1// Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include <qpa/qplatforminputcontext.h>
5
6#include "qwaylandtextinputv2_p.h"
7
8#include "qwaylandinputcontext_p.h"
9#include "qwaylandwindow_p.h"
10#include "qwaylandinputmethodeventbuilder_p.h"
11
12#include <QtCore/qloggingcategory.h>
13#include <QtGui/QGuiApplication>
14#include <QtGui/private/qguiapplication_p.h>
15#include <QtGui/private/qhighdpiscaling_p.h>
16#include <QtGui/qpa/qplatformintegration.h>
17#include <QtGui/qevent.h>
18#include <QtGui/qwindow.h>
19#include <QTextCharFormat>
20#include <QList>
21#include <QRectF>
22#include <QLocale>
23
24QT_BEGIN_NAMESPACE
25
26namespace QtWaylandClient {
27
28namespace {
29
30const Qt::InputMethodQueries supportedQueries2 = Qt::ImEnabled |
31 Qt::ImSurroundingText |
32 Qt::ImCursorPosition |
33 Qt::ImAnchorPosition |
34 Qt::ImHints |
35 Qt::ImCursorRectangle |
36 Qt::ImPreferredLanguage;
37}
38
39QWaylandTextInputv2::QWaylandTextInputv2(QWaylandDisplay *display, struct ::zwp_text_input_v2 *text_input)
40 : QtWayland::zwp_text_input_v2(text_input)
41 , m_display(display)
42{
43}
44
45QWaylandTextInputv2::~QWaylandTextInputv2()
46{
47 if (m_resetCallback)
48 wl_callback_destroy(m_resetCallback);
49 destroy();
50}
51
52void QWaylandTextInputv2::reset()
53{
54 m_builder.reset();
55 m_preeditCommit = QString();
56 updateState(Qt::ImQueryAll, QtWayland::zwp_text_input_v2::update_state_reset);
57}
58
59void QWaylandTextInputv2::commit()
60{
61 if (QObject *o = QGuiApplication::focusObject()) {
62 if (!m_preeditCommit.isEmpty()) {
63
64 QInputMethodEvent event;
65 event.setCommitString(commitString: m_preeditCommit);
66 m_preeditCommit = QString();
67
68 QCoreApplication::sendEvent(receiver: o, event: &event);
69 }
70 }
71
72 reset();
73}
74
75const wl_callback_listener QWaylandTextInputv2::callbackListener = {
76 QWaylandTextInputv2::resetCallback
77};
78
79void QWaylandTextInputv2::resetCallback(void *data, wl_callback *, uint32_t)
80{
81 QWaylandTextInputv2 *self = static_cast<QWaylandTextInputv2*>(data);
82
83 if (self->m_resetCallback) {
84 wl_callback_destroy(self->m_resetCallback);
85 self->m_resetCallback = nullptr;
86 }
87}
88
89void QWaylandTextInputv2::updateState(Qt::InputMethodQueries queries, uint32_t flags)
90{
91 if (!QGuiApplication::focusObject())
92 return;
93
94 if (!QGuiApplication::focusWindow() || !QGuiApplication::focusWindow()->handle())
95 return;
96
97 auto *window = static_cast<QWaylandWindow *>(QGuiApplication::focusWindow()->handle());
98 auto *surface = window->wlSurface();
99 if (!surface || (surface != m_surface))
100 return;
101
102 queries &= supportedQueries2;
103
104 // Surrounding text, cursor and anchor positions are transferred together
105 if ((queries & Qt::ImSurroundingText) || (queries & Qt::ImCursorPosition) || (queries & Qt::ImAnchorPosition))
106 queries |= Qt::ImSurroundingText | Qt::ImCursorPosition | Qt::ImAnchorPosition;
107
108 QInputMethodQueryEvent event(queries);
109 QCoreApplication::sendEvent(receiver: QGuiApplication::focusObject(), event: &event);
110
111 if ((queries & Qt::ImSurroundingText) || (queries & Qt::ImCursorPosition) || (queries & Qt::ImAnchorPosition)) {
112 QString text = event.value(query: Qt::ImSurroundingText).toString();
113 int cursor = event.value(query: Qt::ImCursorPosition).toInt();
114 int anchor = event.value(query: Qt::ImAnchorPosition).toInt();
115
116 // Make sure text is not too big
117 if (text.toUtf8().size() > 2048) {
118 int c = qAbs(t: cursor - anchor) <= 512 ? qMin(a: cursor, b: anchor) + qAbs(t: cursor - anchor) / 2: cursor;
119
120 const int offset = c - qBound(min: 0, val: c, max: 512 - qMin(a: text.size() - c, b: 256));
121 text = text.mid(position: offset + c - 256, n: 512);
122 cursor -= offset;
123 anchor -= offset;
124 }
125
126 set_surrounding_text(text, QWaylandInputMethodEventBuilder::indexToWayland(text, length: cursor), QWaylandInputMethodEventBuilder::indexToWayland(text, length: anchor));
127 }
128
129 if (queries & Qt::ImHints) {
130 QWaylandInputMethodContentType contentType = QWaylandInputMethodContentType::convert(hints: static_cast<Qt::InputMethodHints>(event.value(query: Qt::ImHints).toInt()));
131 set_content_type(contentType.hint, contentType.purpose);
132 }
133
134 if (queries & Qt::ImCursorRectangle) {
135 const QRect &cRect = event.value(query: Qt::ImCursorRectangle).toRect();
136 const QRect &windowRect = QGuiApplication::inputMethod()->inputItemTransform().mapRect(cRect);
137 const QRect &nativeRect = QHighDpi::toNativePixels(value: windowRect, context: QGuiApplication::focusWindow());
138 const QMargins margins = window->clientSideMargins();
139 const QRect &surfaceRect = nativeRect.translated(dx: margins.left(), dy: margins.top());
140 set_cursor_rectangle(surfaceRect.x(), surfaceRect.y(), surfaceRect.width(), surfaceRect.height());
141 }
142
143 if (queries & Qt::ImPreferredLanguage) {
144 const QString &language = event.value(query: Qt::ImPreferredLanguage).toString();
145 set_preferred_language(language);
146 }
147
148 update_state(m_serial, flags);
149 if (flags != QtWayland::zwp_text_input_v2::update_state_change) {
150 if (m_resetCallback)
151 wl_callback_destroy(m_resetCallback);
152 m_resetCallback = wl_display_sync(m_display->wl_display());
153 wl_callback_add_listener(m_resetCallback, &QWaylandTextInputv2::callbackListener, this);
154 }
155}
156
157void QWaylandTextInputv2::setCursorInsidePreedit(int)
158{
159 // Not supported yet
160}
161
162bool QWaylandTextInputv2::isInputPanelVisible() const
163{
164 return m_inputPanelVisible;
165}
166
167QRectF QWaylandTextInputv2::keyboardRect() const
168{
169 return m_keyboardRectangle;
170}
171
172QLocale QWaylandTextInputv2::locale() const
173{
174 return m_locale;
175}
176
177Qt::LayoutDirection QWaylandTextInputv2::inputDirection() const
178{
179 return m_inputDirection;
180}
181
182void QWaylandTextInputv2::zwp_text_input_v2_enter(uint32_t serial, ::wl_surface *surface)
183{
184 m_serial = serial;
185 m_surface = surface;
186
187 updateState(Qt::ImQueryAll, QtWayland::zwp_text_input_v2::update_state_enter);
188}
189
190void QWaylandTextInputv2::zwp_text_input_v2_leave(uint32_t serial, ::wl_surface *surface)
191{
192 m_serial = serial;
193
194 if (m_surface != surface) {
195 qCDebug(qLcQpaInputMethods()) << Q_FUNC_INFO << "Got leave event for surface" << surface << "focused surface" << m_surface;
196 }
197
198 m_surface = nullptr;
199}
200
201void QWaylandTextInputv2::zwp_text_input_v2_modifiers_map(wl_array *map)
202{
203 const QList<QByteArray> modifiersMap = QByteArray::fromRawData(data: static_cast<const char*>(map->data), size: map->size).split('\0');
204
205 m_modifiersMap.clear();
206
207 for (const QByteArray &modifier : modifiersMap) {
208 if (modifier == "Shift")
209 m_modifiersMap.append(Qt::ShiftModifier);
210 else if (modifier == "Control")
211 m_modifiersMap.append(Qt::ControlModifier);
212 else if (modifier == "Alt")
213 m_modifiersMap.append(Qt::AltModifier);
214 else if (modifier == "Mod1")
215 m_modifiersMap.append(Qt::AltModifier);
216 else if (modifier == "Mod4")
217 m_modifiersMap.append(Qt::MetaModifier);
218 else
219 m_modifiersMap.append(Qt::NoModifier);
220 }
221}
222
223void QWaylandTextInputv2::zwp_text_input_v2_input_panel_state(uint32_t visible, int32_t x, int32_t y, int32_t width, int32_t height)
224{
225 const bool inputPanelVisible = (visible == input_panel_visibility_visible);
226 if (m_inputPanelVisible != inputPanelVisible) {
227 m_inputPanelVisible = inputPanelVisible;
228 QGuiApplicationPrivate::platformIntegration()->inputContext()->emitInputPanelVisibleChanged();
229 }
230 const QRectF keyboardRectangle(x, y, width, height);
231 if (m_keyboardRectangle != keyboardRectangle) {
232 m_keyboardRectangle = keyboardRectangle;
233 QGuiApplicationPrivate::platformIntegration()->inputContext()->emitKeyboardRectChanged();
234 }
235}
236
237void QWaylandTextInputv2::zwp_text_input_v2_preedit_string(const QString &text, const QString &commit)
238{
239 if (m_resetCallback) {
240 qCDebug(qLcQpaInputMethods()) << "discard preedit_string: reset not confirmed";
241 m_builder.reset();
242 return;
243 }
244
245 if (!QGuiApplication::focusObject())
246 return;
247
248 QInputMethodEvent *event = m_builder.buildPreedit(text);
249
250 m_builder.reset();
251 m_preeditCommit = commit;
252
253 QCoreApplication::sendEvent(receiver: QGuiApplication::focusObject(), event);
254 delete event;
255}
256
257void QWaylandTextInputv2::zwp_text_input_v2_preedit_styling(uint32_t index, uint32_t length, uint32_t style)
258{
259 m_builder.addPreeditStyling(index, length, style);
260}
261
262void QWaylandTextInputv2::zwp_text_input_v2_preedit_cursor(int32_t index)
263{
264 m_builder.setPreeditCursor(index);
265}
266
267void QWaylandTextInputv2::zwp_text_input_v2_commit_string(const QString &text)
268{
269 if (m_resetCallback) {
270 qCDebug(qLcQpaInputMethods()) << "discard commit_string: reset not confirmed";
271 m_builder.reset();
272 return;
273 }
274
275 if (!QGuiApplication::focusObject())
276 return;
277
278 QInputMethodEvent *event = m_builder.buildCommit(text);
279
280 m_builder.reset();
281
282 QCoreApplication::sendEvent(receiver: QGuiApplication::focusObject(), event);
283 delete event;
284}
285
286void QWaylandTextInputv2::zwp_text_input_v2_cursor_position(int32_t index, int32_t anchor)
287{
288 m_builder.setCursorPosition(index, anchor);
289}
290
291void QWaylandTextInputv2::zwp_text_input_v2_delete_surrounding_text(uint32_t before_length, uint32_t after_length)
292{
293 m_builder.setDeleteSurroundingText(beforeLength: before_length, afterLength: after_length);
294}
295
296void QWaylandTextInputv2::zwp_text_input_v2_keysym(uint32_t time, uint32_t sym, uint32_t state, uint32_t modifiers)
297{
298#if QT_CONFIG(xkbcommon)
299 if (m_resetCallback) {
300 qCDebug(qLcQpaInputMethods()) << "discard keysym: reset not confirmed";
301 return;
302 }
303
304 if (!QGuiApplication::focusWindow())
305 return;
306
307 Qt::KeyboardModifiers qtModifiers = modifiersToQtModifiers(modifiers);
308
309 QEvent::Type type = state == WL_KEYBOARD_KEY_STATE_PRESSED ? QEvent::KeyPress : QEvent::KeyRelease;
310 QString text = QXkbCommon::lookupStringNoKeysymTransformations(keysym: sym);
311 int qtkey = QXkbCommon::keysymToQtKey(keysym: sym, modifiers: qtModifiers);
312
313 QWindowSystemInterface::handleKeyEvent(window: QGuiApplication::focusWindow(),
314 timestamp: time, t: type, k: qtkey, mods: qtModifiers, text);
315#else
316 Q_UNUSED(time);
317 Q_UNUSED(sym);
318 Q_UNUSED(state);
319 Q_UNUSED(modifiers);
320#endif
321}
322
323void QWaylandTextInputv2::zwp_text_input_v2_language(const QString &language)
324{
325 if (m_resetCallback) {
326 qCDebug(qLcQpaInputMethods()) << "discard language: reset not confirmed";
327 return;
328 }
329
330 const QLocale locale(language);
331 if (m_locale != locale) {
332 m_locale = locale;
333 QGuiApplicationPrivate::platformIntegration()->inputContext()->emitLocaleChanged();
334 }
335}
336
337void QWaylandTextInputv2::zwp_text_input_v2_text_direction(uint32_t direction)
338{
339 if (m_resetCallback) {
340 qCDebug(qLcQpaInputMethods()) << "discard text_direction: reset not confirmed";
341 return;
342 }
343
344 const Qt::LayoutDirection inputDirection = (direction == text_direction_auto) ? Qt::LayoutDirectionAuto :
345 (direction == text_direction_ltr) ? Qt::LeftToRight :
346 (direction == text_direction_rtl) ? Qt::RightToLeft : Qt::LayoutDirectionAuto;
347 if (m_inputDirection != inputDirection) {
348 m_inputDirection = inputDirection;
349 QGuiApplicationPrivate::platformIntegration()->inputContext()->emitInputDirectionChanged(newDirection: m_inputDirection);
350 }
351}
352
353void QWaylandTextInputv2::zwp_text_input_v2_input_method_changed(uint32_t serial, uint32_t flags)
354{
355 Q_UNUSED(flags);
356
357 m_serial = serial;
358 updateState(Qt::ImQueryAll, QtWayland::zwp_text_input_v2::update_state_full);
359}
360
361Qt::KeyboardModifiers QWaylandTextInputv2::modifiersToQtModifiers(uint32_t modifiers)
362{
363 Qt::KeyboardModifiers ret = Qt::NoModifier;
364 for (int i = 0; i < m_modifiersMap.size(); ++i) {
365 if (modifiers & (1 << i)) {
366 ret |= m_modifiersMap[i];
367 }
368 }
369 return ret;
370}
371
372}
373
374QT_END_NAMESPACE
375

source code of qtwayland/src/client/qwaylandtextinputv2.cpp