diff options
Diffstat (limited to 'src/client/qwaylandtextinputv3.cpp')
| -rw-r--r-- | src/client/qwaylandtextinputv3.cpp | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/src/client/qwaylandtextinputv3.cpp b/src/client/qwaylandtextinputv3.cpp new file mode 100644 index 000000000..017456ac2 --- /dev/null +++ b/src/client/qwaylandtextinputv3.cpp @@ -0,0 +1,351 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only + +#include "qwaylandtextinputv3_p.h" + +#include "qwaylandwindow_p.h" +#include "qwaylandinputmethodeventbuilder_p.h" + +#include <QtCore/qloggingcategory.h> +#include <QtGui/qguiapplication.h> +#include <QtGui/private/qhighdpiscaling_p.h> +#include <QtGui/qevent.h> +#include <QtGui/qwindow.h> +#include <QTextCharFormat> + +QT_BEGIN_NAMESPACE + +Q_LOGGING_CATEGORY(qLcQpaWaylandTextInput, "qt.qpa.wayland.textinput") + +namespace QtWaylandClient { + +QWaylandTextInputv3::QWaylandTextInputv3(QWaylandDisplay *display, + struct ::zwp_text_input_v3 *text_input) + : QtWayland::zwp_text_input_v3(text_input) +{ + Q_UNUSED(display) +} + +QWaylandTextInputv3::~QWaylandTextInputv3() +{ + destroy(); +} + +namespace { +const Qt::InputMethodQueries supportedQueries3 = Qt::ImEnabled | + Qt::ImSurroundingText | + Qt::ImCursorPosition | + Qt::ImAnchorPosition | + Qt::ImHints | + Qt::ImCursorRectangle; +} + +void QWaylandTextInputv3::zwp_text_input_v3_enter(struct ::wl_surface *surface) +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << m_surface << surface; + + m_surface = surface; + + m_pendingPreeditString.clear(); + m_pendingCommitString.clear(); + m_pendingDeleteBeforeText = 0; + m_pendingDeleteAfterText = 0; + + enable(); + updateState(supportedQueries3, update_state_enter); +} + +void QWaylandTextInputv3::zwp_text_input_v3_leave(struct ::wl_surface *surface) +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO; + + if (m_surface != surface) { + qCWarning(qLcQpaWaylandTextInput()) << Q_FUNC_INFO << "Got leave event for surface" << surface << "focused surface" << m_surface; + return; + } + + m_currentPreeditString.clear(); + + m_surface = nullptr; + + disable(); + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << "Done"; +} + +void QWaylandTextInputv3::zwp_text_input_v3_preedit_string(const QString &text, int32_t cursorBegin, int32_t cursorEnd) +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << text << cursorBegin << cursorEnd; + + if (!QGuiApplication::focusObject()) + return; + + m_pendingPreeditString.text = text; + m_pendingPreeditString.cursorBegin = cursorBegin; + m_pendingPreeditString.cursorEnd = cursorEnd; +} + +void QWaylandTextInputv3::zwp_text_input_v3_commit_string(const QString &text) +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << text; + + if (!QGuiApplication::focusObject()) + return; + + m_pendingCommitString = text; +} + +void QWaylandTextInputv3::zwp_text_input_v3_delete_surrounding_text(uint32_t beforeText, uint32_t afterText) +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << beforeText << afterText; + + if (!QGuiApplication::focusObject()) + return; + + m_pendingDeleteBeforeText = QWaylandInputMethodEventBuilder::indexFromWayland(m_surroundingText, beforeText); + m_pendingDeleteAfterText = QWaylandInputMethodEventBuilder::indexFromWayland(m_surroundingText, afterText); +} + +void QWaylandTextInputv3::zwp_text_input_v3_done(uint32_t serial) +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << "with serial" << serial << m_currentSerial; + + // This is a case of double click. + // text_input_v3 will ignore this done signal and just keep the selection of the clicked word. + if (m_cursorPos != m_anchorPos && (m_pendingDeleteBeforeText != 0 || m_pendingDeleteAfterText != 0)) { + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << "Ignore done"; + m_pendingDeleteBeforeText = 0; + m_pendingDeleteAfterText = 0; + m_pendingPreeditString.clear(); + m_pendingCommitString.clear(); + return; + } + + QObject *focusObject = QGuiApplication::focusObject(); + if (!focusObject) + return; + + if (!m_surface) { + qCWarning(qLcQpaWaylandTextInput) << Q_FUNC_INFO << serial << "Surface is not enabled yet"; + return; + } + + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << "PREEDIT" << m_pendingPreeditString.text << m_pendingPreeditString.cursorBegin; + + QList<QInputMethodEvent::Attribute> attributes; + { + if (m_pendingPreeditString.cursorBegin != -1 || + m_pendingPreeditString.cursorEnd != -1) { + // Current supported cursor shape is just line. + // It means, cursorEnd and cursorBegin are the same. + QInputMethodEvent::Attribute attribute1(QInputMethodEvent::Cursor, + m_pendingPreeditString.text.length(), + 1); + attributes.append(attribute1); + } + + // only use single underline style for now + QTextCharFormat format; + format.setFontUnderline(true); + format.setUnderlineStyle(QTextCharFormat::SingleUnderline); + QInputMethodEvent::Attribute attribute2(QInputMethodEvent::TextFormat, + 0, + m_pendingPreeditString.text.length(), format); + attributes.append(attribute2); + } + QInputMethodEvent event(m_pendingPreeditString.text, attributes); + + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << "DELETE" << m_pendingDeleteBeforeText << m_pendingDeleteAfterText; + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << "COMMIT" << m_pendingCommitString; + + // A workaround for reselection + // It will disable redundant commit after reselection + if (m_pendingDeleteBeforeText != 0 || m_pendingDeleteAfterText != 0) + m_condReselection = true; + + event.setCommitString(m_pendingCommitString, + -m_pendingDeleteBeforeText, + m_pendingDeleteBeforeText + m_pendingDeleteAfterText); + m_currentPreeditString = m_pendingPreeditString; + m_pendingPreeditString.clear(); + m_pendingCommitString.clear(); + m_pendingDeleteBeforeText = 0; + m_pendingDeleteAfterText = 0; + QCoreApplication::sendEvent(focusObject, &event); + + if (serial == m_currentSerial) + updateState(supportedQueries3, update_state_full); +} + +void QWaylandTextInputv3::reset() +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO; + + m_pendingPreeditString.clear(); +} + +void QWaylandTextInputv3::commit() +{ + m_currentSerial = (m_currentSerial < UINT_MAX) ? m_currentSerial + 1U: 0U; + + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << "with serial" << m_currentSerial; + QtWayland::zwp_text_input_v3::commit(); +} + +void QWaylandTextInputv3::updateState(Qt::InputMethodQueries queries, uint32_t flags) +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO << queries << flags; + + if (!QGuiApplication::focusObject()) + return; + + if (!QGuiApplication::focusWindow() || !QGuiApplication::focusWindow()->handle()) + return; + + auto *window = static_cast<QWaylandWindow *>(QGuiApplication::focusWindow()->handle()); + auto *surface = window->wlSurface(); + if (!surface || (surface != m_surface)) + return; + + queries &= supportedQueries3; + bool needsCommit = false; + + QInputMethodQueryEvent event(queries); + QCoreApplication::sendEvent(QGuiApplication::focusObject(), &event); + + // For some reason, a query for Qt::ImSurroundingText gives an empty string even though it is not. + if (!(queries & Qt::ImSurroundingText) && event.value(Qt::ImSurroundingText).toString().isEmpty()) { + return; + } + + if (queries & Qt::ImCursorRectangle) { + const QRect &cRect = event.value(Qt::ImCursorRectangle).toRect(); + const QRect &windowRect = QGuiApplication::inputMethod()->inputItemTransform().mapRect(cRect); + const QRect &nativeRect = QHighDpi::toNativePixels(windowRect, QGuiApplication::focusWindow()); + const QMargins margins = window->clientSideMargins(); + const QRect &surfaceRect = nativeRect.translated(margins.left(), margins.top()); + if (surfaceRect != m_cursorRect) { + set_cursor_rectangle(surfaceRect.x(), surfaceRect.y(), surfaceRect.width(), surfaceRect.height()); + m_cursorRect = surfaceRect; + needsCommit = true; + } + } + + if ((queries & Qt::ImSurroundingText) || (queries & Qt::ImCursorPosition) || (queries & Qt::ImAnchorPosition)) { + QString text = event.value(Qt::ImSurroundingText).toString(); + int cursor = event.value(Qt::ImCursorPosition).toInt(); + int anchor = event.value(Qt::ImAnchorPosition).toInt(); + + qCDebug(qLcQpaWaylandTextInput) << "Orginal surrounding_text from InputMethodQuery: " << text << cursor << anchor; + + // Make sure text is not too big + // surround_text cannot exceed 4000byte in wayland protocol + // The worst case will be supposed here. + const int MAX_MESSAGE_SIZE = 4000; + + if (text.toUtf8().size() > MAX_MESSAGE_SIZE) { + const int selectionStart = QWaylandInputMethodEventBuilder::indexToWayland(text, qMin(cursor, anchor)); + const int selectionEnd = QWaylandInputMethodEventBuilder::indexToWayland(text, qMax(cursor, anchor)); + const int selectionLength = selectionEnd - selectionStart; + // If selection is bigger than 4000 byte, it is fixed to 4000 byte. + // anchor will be moved in the 4000 byte boundary. + if (selectionLength > MAX_MESSAGE_SIZE) { + if (anchor > cursor) { + const int length = MAX_MESSAGE_SIZE; + anchor = QWaylandInputMethodEventBuilder::trimmedIndexFromWayland(text, length, cursor); + anchor -= cursor; + text = text.mid(cursor, anchor); + cursor = 0; + } else { + const int length = -MAX_MESSAGE_SIZE; + anchor = QWaylandInputMethodEventBuilder::trimmedIndexFromWayland(text, length, cursor); + cursor -= anchor; + text = text.mid(anchor, cursor); + anchor = 0; + } + } else { + const int offset = (MAX_MESSAGE_SIZE - selectionLength) / 2; + + int textStart = QWaylandInputMethodEventBuilder::trimmedIndexFromWayland(text, -offset, qMin(cursor, anchor)); + int textEnd = QWaylandInputMethodEventBuilder::trimmedIndexFromWayland(text, MAX_MESSAGE_SIZE, textStart); + + anchor -= textStart; + cursor -= textStart; + text = text.mid(textStart, textEnd - textStart); + } + } + qCDebug(qLcQpaWaylandTextInput) << "Modified surrounding_text: " << text << cursor << anchor; + + const int cursorPos = QWaylandInputMethodEventBuilder::indexToWayland(text, cursor); + const int anchorPos = QWaylandInputMethodEventBuilder::indexToWayland(text, anchor); + + if (m_surroundingText != text || m_cursorPos != cursorPos || m_anchorPos != anchorPos) { + qCDebug(qLcQpaWaylandTextInput) << "Current surrounding_text: " << m_surroundingText << m_cursorPos << m_anchorPos; + qCDebug(qLcQpaWaylandTextInput) << "New surrounding_text: " << text << cursorPos << anchorPos; + + set_surrounding_text(text, cursorPos, anchorPos); + + // A workaround in the case of reselection + // It will work when re-clicking a preedit text + if (m_condReselection) { + qCDebug(qLcQpaWaylandTextInput) << "\"commit\" is disabled when Reselection by changing focus"; + m_condReselection = false; + needsCommit = false; + + } + + m_surroundingText = text; + m_cursorPos = cursorPos; + m_anchorPos = anchorPos; + m_cursor = cursor; + } + } + + if (queries & Qt::ImHints) { + QWaylandInputMethodContentType contentType = QWaylandInputMethodContentType::convertV3(static_cast<Qt::InputMethodHints>(event.value(Qt::ImHints).toInt())); + qCDebug(qLcQpaWaylandTextInput) << m_contentHint << contentType.hint; + qCDebug(qLcQpaWaylandTextInput) << m_contentPurpose << contentType.purpose; + + if (m_contentHint != contentType.hint || m_contentPurpose != contentType.purpose) { + qCDebug(qLcQpaWaylandTextInput) << "set_content_type: " << contentType.hint << contentType.purpose; + set_content_type(contentType.hint, contentType.purpose); + + m_contentHint = contentType.hint; + m_contentPurpose = contentType.purpose; + needsCommit = true; + } + } + + if (needsCommit + && (flags == update_state_change || flags == update_state_enter)) + commit(); +} + +void QWaylandTextInputv3::setCursorInsidePreedit(int cursor) +{ + Q_UNUSED(cursor); +} + +bool QWaylandTextInputv3::isInputPanelVisible() const +{ + return false; +} + +QRectF QWaylandTextInputv3::keyboardRect() const +{ + qCDebug(qLcQpaWaylandTextInput) << Q_FUNC_INFO; + return m_cursorRect; +} + +QLocale QWaylandTextInputv3::locale() const +{ + return QLocale(); +} + +Qt::LayoutDirection QWaylandTextInputv3::inputDirection() const +{ + return Qt::LeftToRight; +} + +} + +QT_END_NAMESPACE |