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Diffstat (limited to 'src/client/qwaylandtextinputv1.cpp')
| -rw-r--r-- | src/client/qwaylandtextinputv1.cpp | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/src/client/qwaylandtextinputv1.cpp b/src/client/qwaylandtextinputv1.cpp new file mode 100644 index 000000000..846ed95c8 --- /dev/null +++ b/src/client/qwaylandtextinputv1.cpp @@ -0,0 +1,362 @@ +// 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 <qpa/qplatforminputcontext.h> + +#include "qwaylandtextinputv1_p.h" + +#include "qwaylandwindow_p.h" +#include "qwaylandinputmethodeventbuilder_p.h" + +#include <QtCore/qloggingcategory.h> +#include <QtGui/QGuiApplication> +#include <QtGui/private/qguiapplication_p.h> +#include <QtGui/private/qhighdpiscaling_p.h> +#include <QtGui/qpa/qplatformintegration.h> +#include <QtGui/qevent.h> +#include <QtGui/qwindow.h> +#include <QTextCharFormat> +#include <QList> +#include <QRectF> +#include <QLocale> + +QT_BEGIN_NAMESPACE + +Q_DECLARE_LOGGING_CATEGORY(qLcQpaInputMethods) + +namespace QtWaylandClient { + +namespace { + +const Qt::InputMethodQueries supportedQueries1 = Qt::ImEnabled | + Qt::ImSurroundingText | + Qt::ImCursorPosition | + Qt::ImAnchorPosition | + Qt::ImHints | + Qt::ImCursorRectangle | + Qt::ImPreferredLanguage; +} + +QWaylandTextInputv1::QWaylandTextInputv1(QWaylandDisplay *display, struct ::zwp_text_input_v1 *text_input) + : QtWayland::zwp_text_input_v1(text_input) +{ + Q_UNUSED(display); +} + +QWaylandTextInputv1::~QWaylandTextInputv1() +{ + if (m_resetCallback) + wl_callback_destroy(m_resetCallback); + zwp_text_input_v1_destroy(object()); +} + +void QWaylandTextInputv1::reset() +{ + m_builder.reset(); + m_preeditCommit = QString(); + updateState(Qt::ImQueryAll, QWaylandTextInputInterface::update_state_reset); +} + +void QWaylandTextInputv1::commit() +{ + if (QObject *o = QGuiApplication::focusObject()) { + QInputMethodEvent event; + event.setCommitString(m_preeditCommit); + QCoreApplication::sendEvent(o, &event); + } + + reset(); +} + +const wl_callback_listener QWaylandTextInputv1::callbackListener = { + QWaylandTextInputv1::resetCallback +}; + +void QWaylandTextInputv1::resetCallback(void *data, wl_callback *, uint32_t) +{ + QWaylandTextInputv1 *self = static_cast<QWaylandTextInputv1*>(data); + + if (self->m_resetCallback) { + wl_callback_destroy(self->m_resetCallback); + self->m_resetCallback = nullptr; + } +} + +void QWaylandTextInputv1::updateState(Qt::InputMethodQueries queries, uint32_t 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 &= supportedQueries1; + + // Surrounding text, cursor and anchor positions are transferred together + if ((queries & Qt::ImSurroundingText) || (queries & Qt::ImCursorPosition) || (queries & Qt::ImAnchorPosition)) + queries |= Qt::ImSurroundingText | Qt::ImCursorPosition | Qt::ImAnchorPosition; + + QInputMethodQueryEvent event(queries); + QCoreApplication::sendEvent(QGuiApplication::focusObject(), &event); + + 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(); + + // Make sure text is not too big + if (text.toUtf8().size() > 2048) { + int c = qAbs(cursor - anchor) <= 512 ? qMin(cursor, anchor) + qAbs(cursor - anchor) / 2: cursor; + + const int offset = c - qBound(0, c, 512 - qMin(text.size() - c, 256)); + text = text.mid(offset + c - 256, 512); + cursor -= offset; + anchor -= offset; + } + + set_surrounding_text(text, QWaylandInputMethodEventBuilder::indexToWayland(text, cursor), QWaylandInputMethodEventBuilder::indexToWayland(text, anchor)); + } + + if (queries & Qt::ImHints) { + QWaylandInputMethodContentType contentType = QWaylandInputMethodContentType::convert(static_cast<Qt::InputMethodHints>(event.value(Qt::ImHints).toInt())); + set_content_type(contentType.hint, contentType.purpose); + } + + 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()); + set_cursor_rectangle(surfaceRect.x(), surfaceRect.y(), surfaceRect.width(), surfaceRect.height()); + } + + if (queries & Qt::ImPreferredLanguage) { + const QString &language = event.value(Qt::ImPreferredLanguage).toString(); + set_preferred_language(language); + } + + if (flags == QWaylandTextInputInterface::update_state_reset) + QtWayland::zwp_text_input_v1::reset(); + else + commit_state(m_serial); +} + +void QWaylandTextInputv1::setCursorInsidePreedit(int) +{ + // Not supported yet +} + +bool QWaylandTextInputv1::isInputPanelVisible() const +{ + return m_inputPanelVisible; +} + +QRectF QWaylandTextInputv1::keyboardRect() const +{ + return m_keyboardRectangle; +} + +QLocale QWaylandTextInputv1::locale() const +{ + return m_locale; +} + +Qt::LayoutDirection QWaylandTextInputv1::inputDirection() const +{ + return m_inputDirection; +} + +void QWaylandTextInputv1::zwp_text_input_v1_enter(::wl_surface *surface) +{ + m_surface = surface; + + updateState(Qt::ImQueryAll, QWaylandTextInputInterface::update_state_reset); +} + +void QWaylandTextInputv1::zwp_text_input_v1_leave() +{ + m_surface = nullptr; +} + +void QWaylandTextInputv1::zwp_text_input_v1_modifiers_map(wl_array *map) +{ + const QList<QByteArray> modifiersMap = QByteArray::fromRawData(static_cast<const char*>(map->data), map->size).split('\0'); + + m_modifiersMap.clear(); + + for (const QByteArray &modifier : modifiersMap) { + if (modifier == "Shift") + m_modifiersMap.append(Qt::ShiftModifier); + else if (modifier == "Control") + m_modifiersMap.append(Qt::ControlModifier); + else if (modifier == "Alt") + m_modifiersMap.append(Qt::AltModifier); + else if (modifier == "Mod1") + m_modifiersMap.append(Qt::AltModifier); + else if (modifier == "Mod4") + m_modifiersMap.append(Qt::MetaModifier); + else + m_modifiersMap.append(Qt::NoModifier); + } +} + +void QWaylandTextInputv1::zwp_text_input_v1_input_panel_state(uint32_t visible) +{ + const bool inputPanelVisible = (visible == 1); + if (m_inputPanelVisible != inputPanelVisible) { + m_inputPanelVisible = inputPanelVisible; + QGuiApplicationPrivate::platformIntegration()->inputContext()->emitInputPanelVisibleChanged(); + } +} + +void QWaylandTextInputv1::zwp_text_input_v1_preedit_string(uint32_t serial, const QString &text, const QString &commit) +{ + m_serial = serial; + + if (m_resetCallback) { + qCDebug(qLcQpaInputMethods()) << "discard preedit_string: reset not confirmed"; + m_builder.reset(); + return; + } + + if (!QGuiApplication::focusObject()) + return; + + QInputMethodEvent *event = m_builder.buildPreedit(text); + + m_builder.reset(); + m_preeditCommit = commit; + + QCoreApplication::sendEvent(QGuiApplication::focusObject(), event); + delete event; +} + +void QWaylandTextInputv1::zwp_text_input_v1_preedit_styling(uint32_t index, uint32_t length, uint32_t style) +{ + m_builder.addPreeditStyling(index, length, style); +} + +void QWaylandTextInputv1::zwp_text_input_v1_preedit_cursor(int32_t index) +{ + m_builder.setPreeditCursor(index); +} + +void QWaylandTextInputv1::zwp_text_input_v1_commit_string(uint32_t serial, const QString &text) +{ + m_serial = serial; + + if (m_resetCallback) { + qCDebug(qLcQpaInputMethods()) << "discard commit_string: reset not confirmed"; + m_builder.reset(); + return; + } + + if (!QGuiApplication::focusObject()) + return; + + // When committing the text, the preeditString needs to be reset, to prevent it to be + // send again in the commit() function + m_preeditCommit.clear(); + + QInputMethodEvent *event = m_builder.buildCommit(text); + + m_builder.reset(); + + QCoreApplication::sendEvent(QGuiApplication::focusObject(), event); + delete event; +} + +void QWaylandTextInputv1::zwp_text_input_v1_cursor_position(int32_t index, int32_t anchor) +{ + m_builder.setCursorPosition(index, anchor); +} + +void QWaylandTextInputv1::zwp_text_input_v1_delete_surrounding_text(int32_t before_length, uint32_t after_length) +{ + //before_length is negative, but the builder expects it to be positive + m_builder.setDeleteSurroundingText(-before_length, after_length); +} + +void QWaylandTextInputv1::zwp_text_input_v1_keysym(uint32_t serial, uint32_t time, uint32_t sym, uint32_t state, uint32_t modifiers) +{ + m_serial = serial; + +#if QT_CONFIG(xkbcommon) + if (m_resetCallback) { + qCDebug(qLcQpaInputMethods()) << "discard keysym: reset not confirmed"; + return; + } + + if (!QGuiApplication::focusWindow()) + return; + + Qt::KeyboardModifiers qtModifiers = modifiersToQtModifiers(modifiers); + + QEvent::Type type = state == WL_KEYBOARD_KEY_STATE_PRESSED ? QEvent::KeyPress : QEvent::KeyRelease; + QString text = QXkbCommon::lookupStringNoKeysymTransformations(sym); + int qtkey = QXkbCommon::keysymToQtKey(sym, qtModifiers); + + QWindowSystemInterface::handleKeyEvent(QGuiApplication::focusWindow(), + time, type, qtkey, qtModifiers, text); +#else + Q_UNUSED(time); + Q_UNUSED(sym); + Q_UNUSED(state); + Q_UNUSED(modifiers); +#endif +} + +void QWaylandTextInputv1::zwp_text_input_v1_language(uint32_t serial, const QString &language) +{ + m_serial = serial; + + if (m_resetCallback) { + qCDebug(qLcQpaInputMethods()) << "discard language: reset not confirmed"; + return; + } + + const QLocale locale(language); + if (m_locale != locale) { + m_locale = locale; + QGuiApplicationPrivate::platformIntegration()->inputContext()->emitLocaleChanged(); + } +} + +void QWaylandTextInputv1::zwp_text_input_v1_text_direction(uint32_t serial, uint32_t direction) +{ + m_serial = serial; + + if (m_resetCallback) { + qCDebug(qLcQpaInputMethods()) << "discard text_direction: reset not confirmed"; + return; + } + + const Qt::LayoutDirection inputDirection = (direction == text_direction_auto) ? Qt::LayoutDirectionAuto : + (direction == text_direction_ltr) ? Qt::LeftToRight : + (direction == text_direction_rtl) ? Qt::RightToLeft : Qt::LayoutDirectionAuto; + if (m_inputDirection != inputDirection) { + m_inputDirection = inputDirection; + QGuiApplicationPrivate::platformIntegration()->inputContext()->emitInputDirectionChanged(m_inputDirection); + } +} + +Qt::KeyboardModifiers QWaylandTextInputv1::modifiersToQtModifiers(uint32_t modifiers) +{ + Qt::KeyboardModifiers ret = Qt::NoModifier; + for (int i = 0; i < m_modifiersMap.size(); ++i) { + if (modifiers & (1 << i)) { + ret |= m_modifiersMap[i]; + } + } + return ret; +} + +} + +QT_END_NAMESPACE + |