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213d6390a2cc59d174173f4359c161625a9c4bdc
libreoffice/vcl/qt5/Qt5Widget.cxx
Jan-Marek Glogowski 5d23f7748f tdf#128710 Qt5 don't force immediate paint on show 
I tried to build a minimal reproducer with QMainWindow and a
QDialog and miserably failed. All variants of show, hide, modal
change, move, resize, processEvents(QEventLoop::AllEvents) just
worked. I was able to produce "qt.qpa.xcb: QXcbConnection: XCB
error: 3 (BadWindow) ... major code: 18 (ChangeProperty)" entries
in my ~/.xsession-errors, but that didn't matter for my program.

Then I started to comment code blocks in Qt5Frame and after that
continued in Qt5Widget, found that ShowEvent produced a modal
window, albeit with an obviously missing paint event. But that is
fixable by just queuing one in LO.

I tried to debug that broken behaviour to find the real cause of
the bug, but as I already knew from commit e770bacc85 ("Qt5
workaround modal change after show bug"), this bug has some timing
related component, so that sadly didn't result in any conclusion.

Change-Id: Iaec45997179365fae5430120f86e435aa5e88447
Reviewed-on: https://gerrit.libreoffice.org/82745
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Michael Weghorn <m.weghorn@posteo.de>
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
2019-11-15 16:45:35 +01:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <Qt5Widget.hxx>
#include <Qt5Widget.moc>
#include <Qt5Frame.hxx>
#include <Qt5Graphics.hxx>
#include <Qt5Instance.hxx>
#include <Qt5SvpGraphics.hxx>
#include <Qt5Transferable.hxx>
#include <Qt5Tools.hxx>
#include <QtCore/QMimeData>
#include <QtGui/QDrag>
#include <QtGui/QFocusEvent>
#include <QtGui/QGuiApplication>
#include <QtGui/QImage>
#include <QtGui/QKeyEvent>
#include <QtGui/QMouseEvent>
#include <QtGui/QPainter>
#include <QtGui/QPaintEvent>
#include <QtGui/QResizeEvent>
#include <QtGui/QShowEvent>
#include <QtGui/QTextCharFormat>
#include <QtGui/QWheelEvent>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QWidget>
#include <cairo.h>
#include <vcl/commandevent.hxx>
#include <vcl/event.hxx>
#include <window.h>
#include <tools/diagnose_ex.h>
#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include <com/sun/star/accessibility/XAccessibleEditableText.hpp>
using namespace com::sun::star;
void Qt5Widget::paintEvent(QPaintEvent* pEvent)
{
QPainter p(this);
if (!m_rFrame.m_bNullRegion)
p.setClipRegion(m_rFrame.m_aRegion);
if (m_rFrame.m_bUseCairo)
{
cairo_surface_t* pSurface = m_rFrame.m_pSurface.get();
cairo_surface_flush(pSurface);
QImage aImage(cairo_image_surface_get_data(pSurface), size().width(), size().height(),
Qt5_DefaultFormat32);
p.drawImage(pEvent->rect().topLeft(), aImage, pEvent->rect());
}
else
p.drawImage(pEvent->rect().topLeft(), *m_rFrame.m_pQImage, pEvent->rect());
}
void Qt5Widget::resizeEvent(QResizeEvent* pEvent)
{
const int nWidth = pEvent->size().width();
const int nHeight = pEvent->size().height();
m_rFrame.maGeometry.nWidth = nWidth;
m_rFrame.maGeometry.nHeight = nHeight;
if (m_rFrame.m_bUseCairo)
{
if (m_rFrame.m_pSvpGraphics)
{
cairo_surface_t* pSurface
= cairo_image_surface_create(CAIRO_FORMAT_ARGB32, nWidth, nHeight);
cairo_surface_set_user_data(pSurface, SvpSalGraphics::getDamageKey(),
&m_rFrame.m_aDamageHandler, nullptr);
m_rFrame.m_pSvpGraphics->setSurface(pSurface, basegfx::B2IVector(nWidth, nHeight));
UniqueCairoSurface old_surface(m_rFrame.m_pSurface.release());
m_rFrame.m_pSurface.reset(pSurface);
int min_width = qMin(pEvent->oldSize().width(), nWidth);
int min_height = qMin(pEvent->oldSize().height(), nHeight);
SalTwoRect rect(0, 0, min_width, min_height, 0, 0, min_width, min_height);
m_rFrame.m_pSvpGraphics->copySource(rect, old_surface.get());
}
}
else
{
QImage* pImage = nullptr;
if (m_rFrame.m_pQImage)
pImage = new QImage(m_rFrame.m_pQImage->copy(0, 0, nWidth, nHeight));
else
{
pImage = new QImage(nWidth, nHeight, Qt5_DefaultFormat32);
pImage->fill(Qt::transparent);
}
m_rFrame.m_pQt5Graphics->ChangeQImage(pImage);
m_rFrame.m_pQImage.reset(pImage);
}
m_rFrame.CallCallback(SalEvent::Resize, nullptr);
}
void Qt5Widget::handleMouseButtonEvent(const Qt5Frame& rFrame, const QMouseEvent* pEvent,
const ButtonKeyState eState)
{
SalMouseEvent aEvent;
switch (pEvent->button())
{
case Qt::LeftButton:
aEvent.mnButton = MOUSE_LEFT;
break;
case Qt::MidButton:
aEvent.mnButton = MOUSE_MIDDLE;
break;
case Qt::RightButton:
aEvent.mnButton = MOUSE_RIGHT;
break;
default:
return;
}
aEvent.mnTime = pEvent->timestamp();
aEvent.mnX = static_cast<long>(QGuiApplication::isLeftToRight()
? pEvent->pos().x()
: rFrame.GetQWidget()->width() - pEvent->pos().x());
aEvent.mnY = static_cast<long>(pEvent->pos().y());
aEvent.mnCode = GetKeyModCode(pEvent->modifiers()) | GetMouseModCode(pEvent->buttons());
SalEvent nEventType;
if (eState == ButtonKeyState::Pressed)
nEventType = SalEvent::MouseButtonDown;
else
nEventType = SalEvent::MouseButtonUp;
rFrame.CallCallback(nEventType, &aEvent);
}
void Qt5Widget::mousePressEvent(QMouseEvent* pEvent) { handleMousePressEvent(m_rFrame, pEvent); }
void Qt5Widget::mouseReleaseEvent(QMouseEvent* pEvent)
{
handleMouseReleaseEvent(m_rFrame, pEvent);
}
void Qt5Widget::mouseMoveEvent(QMouseEvent* pEvent)
{
QPoint point = pEvent->pos();
SalMouseEvent aEvent;
aEvent.mnTime = pEvent->timestamp();
aEvent.mnX = QGuiApplication::isLeftToRight() ? point.x() : width() - point.x();
aEvent.mnY = point.y();
aEvent.mnCode = GetKeyModCode(pEvent->modifiers()) | GetMouseModCode(pEvent->buttons());
aEvent.mnButton = 0;
m_rFrame.CallCallback(SalEvent::MouseMove, &aEvent);
pEvent->accept();
}
void Qt5Widget::wheelEvent(QWheelEvent* pEvent)
{
SalWheelMouseEvent aEvent;
aEvent.mnTime = pEvent->timestamp();
aEvent.mnX = pEvent->pos().x();
aEvent.mnY = pEvent->pos().y();
aEvent.mnCode = GetKeyModCode(pEvent->modifiers()) | GetMouseModCode(pEvent->buttons());
// mouse wheel ticks are 120, which we map to 3 lines.
// we have to accumulate for touch scroll to keep track of the absolute delta.
int nDelta = pEvent->angleDelta().y(), lines;
aEvent.mbHorz = nDelta == 0;
if (aEvent.mbHorz)
{
nDelta = (QGuiApplication::isLeftToRight() ? 1 : -1) * pEvent->angleDelta().x();
if (!nDelta)
return;
m_nDeltaX += nDelta;
lines = m_nDeltaX / 40;
m_nDeltaX = m_nDeltaX % 40;
}
else
{
m_nDeltaY += nDelta;
lines = m_nDeltaY / 40;
m_nDeltaY = m_nDeltaY % 40;
}
aEvent.mnDelta = nDelta;
aEvent.mnNotchDelta = nDelta < 0 ? -1 : 1;
aEvent.mnScrollLines = std::abs(lines);
m_rFrame.CallCallback(SalEvent::WheelMouse, &aEvent);
pEvent->accept();
}
void Qt5Widget::dragEnterEvent(QDragEnterEvent* event)
{
if (dynamic_cast<const Qt5MimeData*>(event->mimeData()))
event->accept();
else
event->acceptProposedAction();
}
// also called when a drop is rejected
void Qt5Widget::dragLeaveEvent(QDragLeaveEvent*) { m_rFrame.handleDragLeave(); }
void Qt5Widget::dragMoveEvent(QDragMoveEvent* pEvent) { m_rFrame.handleDragMove(pEvent); }
void Qt5Widget::dropEvent(QDropEvent* pEvent) { m_rFrame.handleDrop(pEvent); }
void Qt5Widget::moveEvent(QMoveEvent* pEvent)
{
if (m_rFrame.m_pTopLevel)
return;
m_rFrame.maGeometry.nX = pEvent->pos().x();
m_rFrame.maGeometry.nY = pEvent->pos().y();
m_rFrame.CallCallback(SalEvent::Move, nullptr);
}
void Qt5Widget::showEvent(QShowEvent*)
{
QSize aSize(m_rFrame.GetQWidget()->size());
// forcing an immediate update somehow interferes with the hide + show
// sequence from Qt5Frame::SetModal, if the frame was already set visible,
// resulting in a hidden / unmapped window
SalPaintEvent aPaintEvt(0, 0, aSize.width(), aSize.height());
m_rFrame.CallCallback(SalEvent::Paint, &aPaintEvt);
}
void Qt5Widget::closeEvent(QCloseEvent* /*pEvent*/)
{
m_rFrame.CallCallback(SalEvent::Close, nullptr);
}
static sal_uInt16 GetKeyCode(int keyval, Qt::KeyboardModifiers modifiers)
{
sal_uInt16 nCode = 0;
if (keyval >= Qt::Key_0 && keyval <= Qt::Key_9)
nCode = KEY_0 + (keyval - Qt::Key_0);
else if (keyval >= Qt::Key_A && keyval <= Qt::Key_Z)
nCode = KEY_A + (keyval - Qt::Key_A);
else if (keyval >= Qt::Key_F1 && keyval <= Qt::Key_F26)
nCode = KEY_F1 + (keyval - Qt::Key_F1);
else if (modifiers.testFlag(Qt::KeypadModifier)
&& (keyval == Qt::Key_Period || keyval == Qt::Key_Comma))
// Qt doesn't use a special keyval for decimal separator ("," or ".")
// on numerical keypad, but sets Qt::KeypadModifier in addition
nCode = KEY_DECIMAL;
else
{
switch (keyval)
{
case Qt::Key_Down:
nCode = KEY_DOWN;
break;
case Qt::Key_Up:
nCode = KEY_UP;
break;
case Qt::Key_Left:
nCode = KEY_LEFT;
break;
case Qt::Key_Right:
nCode = KEY_RIGHT;
break;
case Qt::Key_Home:
nCode = KEY_HOME;
break;
case Qt::Key_End:
nCode = KEY_END;
break;
case Qt::Key_PageUp:
nCode = KEY_PAGEUP;
break;
case Qt::Key_PageDown:
nCode = KEY_PAGEDOWN;
break;
case Qt::Key_Return:
case Qt::Key_Enter:
nCode = KEY_RETURN;
break;
case Qt::Key_Escape:
nCode = KEY_ESCAPE;
break;
case Qt::Key_Tab:
// oddly enough, Qt doesn't send Shift-Tab event as 'Tab key pressed with Shift
// modifier' but as 'Backtab key pressed' (while its modifier bits are still
// set to Shift) -- so let's map both Key_Tab and Key_Backtab to VCL's KEY_TAB
case Qt::Key_Backtab:
nCode = KEY_TAB;
break;
case Qt::Key_Backspace:
nCode = KEY_BACKSPACE;
break;
case Qt::Key_Space:
nCode = KEY_SPACE;
break;
case Qt::Key_Insert:
nCode = KEY_INSERT;
break;
case Qt::Key_Delete:
nCode = KEY_DELETE;
break;
case Qt::Key_Plus:
nCode = KEY_ADD;
break;
case Qt::Key_Minus:
nCode = KEY_SUBTRACT;
break;
case Qt::Key_Asterisk:
nCode = KEY_MULTIPLY;
break;
case Qt::Key_Slash:
nCode = KEY_DIVIDE;
break;
case Qt::Key_Period:
nCode = KEY_POINT;
break;
case Qt::Key_Comma:
nCode = KEY_COMMA;
break;
case Qt::Key_Less:
nCode = KEY_LESS;
break;
case Qt::Key_Greater:
nCode = KEY_GREATER;
break;
case Qt::Key_Equal:
nCode = KEY_EQUAL;
break;
case Qt::Key_Find:
nCode = KEY_FIND;
break;
case Qt::Key_Menu:
nCode = KEY_CONTEXTMENU;
break;
case Qt::Key_Help:
nCode = KEY_HELP;
break;
case Qt::Key_Undo:
nCode = KEY_UNDO;
break;
case Qt::Key_Redo:
nCode = KEY_REPEAT;
break;
case Qt::Key_Cancel:
nCode = KEY_F11;
break;
case Qt::Key_AsciiTilde:
nCode = KEY_TILDE;
break;
case Qt::Key_QuoteLeft:
nCode = KEY_QUOTELEFT;
break;
case Qt::Key_BracketLeft:
nCode = KEY_BRACKETLEFT;
break;
case Qt::Key_BracketRight:
nCode = KEY_BRACKETRIGHT;
break;
case Qt::Key_Semicolon:
nCode = KEY_SEMICOLON;
break;
case Qt::Key_Copy:
nCode = KEY_COPY;
break;
case Qt::Key_Cut:
nCode = KEY_CUT;
break;
case Qt::Key_Open:
nCode = KEY_OPEN;
break;
case Qt::Key_Paste:
nCode = KEY_PASTE;
break;
}
}
return nCode;
}
void Qt5Widget::commitText(Qt5Frame& rFrame, const QString& aText)
{
SalExtTextInputEvent aInputEvent;
aInputEvent.mpTextAttr = nullptr;
aInputEvent.mnCursorFlags = 0;
aInputEvent.maText = toOUString(aText);
aInputEvent.mnCursorPos = aInputEvent.maText.getLength();
SolarMutexGuard aGuard;
vcl::DeletionListener aDel(&rFrame);
rFrame.CallCallback(SalEvent::ExtTextInput, &aInputEvent);
if (!aDel.isDeleted())
rFrame.CallCallback(SalEvent::EndExtTextInput, nullptr);
}
bool Qt5Widget::handleKeyEvent(Qt5Frame& rFrame, const QWidget& rWidget, QKeyEvent* pEvent,
const ButtonKeyState eState)
{
sal_uInt16 nCode = GetKeyCode(pEvent->key(), pEvent->modifiers());
if (eState == ButtonKeyState::Pressed && nCode == 0 && !pEvent->text().isEmpty()
&& rWidget.testAttribute(Qt::WA_InputMethodEnabled))
{
commitText(rFrame, pEvent->text());
pEvent->accept();
return true;
}
SalKeyEvent aEvent;
aEvent.mnCharCode = (pEvent->text().isEmpty() ? 0 : pEvent->text().at(0).unicode());
aEvent.mnRepeat = 0;
aEvent.mnCode = nCode;
aEvent.mnCode |= GetKeyModCode(pEvent->modifiers());
QGuiApplication::inputMethod()->update(Qt::ImCursorRectangle);
bool bStopProcessingKey;
if (eState == ButtonKeyState::Pressed)
bStopProcessingKey = rFrame.CallCallback(SalEvent::KeyInput, &aEvent);
else
bStopProcessingKey = rFrame.CallCallback(SalEvent::KeyUp, &aEvent);
if (bStopProcessingKey)
pEvent->accept();
return bStopProcessingKey;
}
bool Qt5Widget::handleEvent(Qt5Frame& rFrame, const QWidget& rWidget, QEvent* pEvent)
{
if (pEvent->type() == QEvent::ShortcutOverride)
{
// Accepted event disables shortcut activation,
// but enables keypress event.
// If event is not accepted and shortcut is successfully activated,
// KeyPress event is omitted.
//
// Instead of processing keyPressEvent, handle ShortcutOverride event,
// and if it's handled - disable the shortcut, it should have been activated.
// Don't process keyPressEvent generated after disabling shortcut since it was handled here.
// If event is not handled, don't accept it and let Qt activate related shortcut.
if (handleKeyEvent(rFrame, rWidget, static_cast<QKeyEvent*>(pEvent),
ButtonKeyState::Pressed))
return true;
}
return false;
}
bool Qt5Widget::event(QEvent* pEvent)
{
return handleEvent(m_rFrame, *this, pEvent) || QWidget::event(pEvent);
}
void Qt5Widget::keyReleaseEvent(QKeyEvent* pEvent)
{
if (!handleKeyReleaseEvent(m_rFrame, *this, pEvent))
QWidget::keyReleaseEvent(pEvent);
}
void Qt5Widget::focusInEvent(QFocusEvent*) { m_rFrame.CallCallback(SalEvent::GetFocus, nullptr); }
void Qt5Widget::focusOutEvent(QFocusEvent*)
{
endExtTextInput();
m_rFrame.CallCallback(SalEvent::LoseFocus, nullptr);
}
Qt5Widget::Qt5Widget(Qt5Frame& rFrame, Qt::WindowFlags f)
: QWidget(Q_NULLPTR, f)
, m_rFrame(rFrame)
, m_bNonEmptyIMPreeditSeen(false)
, m_nDeltaX(0)
, m_nDeltaY(0)
{
create();
setMouseTracking(true);
setFocusPolicy(Qt::StrongFocus);
}
static ExtTextInputAttr lcl_MapUndrelineStyle(QTextCharFormat::UnderlineStyle us)
{
switch (us)
{
case QTextCharFormat::NoUnderline:
return ExtTextInputAttr::NONE;
case QTextCharFormat::DotLine:
return ExtTextInputAttr::DottedUnderline;
case QTextCharFormat::DashDotDotLine:
case QTextCharFormat::DashDotLine:
return ExtTextInputAttr::DashDotUnderline;
case QTextCharFormat::WaveUnderline:
return ExtTextInputAttr::GrayWaveline;
default:
return ExtTextInputAttr::Underline;
}
}
void Qt5Widget::inputMethodEvent(QInputMethodEvent* pEvent)
{
if (!pEvent->commitString().isEmpty())
commitText(m_rFrame, pEvent->commitString());
else
{
SalExtTextInputEvent aInputEvent;
aInputEvent.mpTextAttr = nullptr;
aInputEvent.mnCursorFlags = 0;
aInputEvent.maText = toOUString(pEvent->preeditString());
aInputEvent.mnCursorPos = 0;
const sal_Int32 nLength = aInputEvent.maText.getLength();
const QList<QInputMethodEvent::Attribute>& rAttrList = pEvent->attributes();
std::vector<ExtTextInputAttr> aTextAttrs(std::max(sal_Int32(1), nLength),
ExtTextInputAttr::NONE);
aInputEvent.mpTextAttr = aTextAttrs.data();
for (int i = 0; i < rAttrList.size(); ++i)
{
const QInputMethodEvent::Attribute& rAttr = rAttrList.at(i);
switch (rAttr.type)
{
case QInputMethodEvent::TextFormat:
{
QTextCharFormat aCharFormat
= qvariant_cast<QTextFormat>(rAttr.value).toCharFormat();
if (aCharFormat.isValid())
{
ExtTextInputAttr aETIP
= lcl_MapUndrelineStyle(aCharFormat.underlineStyle());
if (aCharFormat.hasProperty(QTextFormat::BackgroundBrush))
aETIP |= ExtTextInputAttr::Highlight;
if (aCharFormat.fontStrikeOut())
aETIP |= ExtTextInputAttr::RedText;
for (int j = rAttr.start; j < rAttr.start + rAttr.length; j++)
aTextAttrs[j] = aETIP;
}
break;
}
case QInputMethodEvent::Cursor:
{
aInputEvent.mnCursorPos = rAttr.start;
if (rAttr.length == 0)
aInputEvent.mnCursorFlags |= EXTTEXTINPUT_CURSOR_INVISIBLE;
break;
}
default:
SAL_WARN("vcl.qt5", "Unhandled QInputMethodEvent attribute: "
<< static_cast<int>(rAttr.type));
break;
}
}
const bool bIsEmpty = aInputEvent.maText.isEmpty();
if (m_bNonEmptyIMPreeditSeen || !bIsEmpty)
{
SolarMutexGuard aGuard;
vcl::DeletionListener aDel(&m_rFrame);
m_rFrame.CallCallback(SalEvent::ExtTextInput, &aInputEvent);
if (!aDel.isDeleted() && bIsEmpty)
m_rFrame.CallCallback(SalEvent::EndExtTextInput, nullptr);
m_bNonEmptyIMPreeditSeen = !bIsEmpty;
}
}
pEvent->accept();
}
static bool lcl_retrieveSurrounding(sal_Int32& rPosition, sal_Int32& rAnchor, QString* pText,
QString* pSelection)
{
SolarMutexGuard aGuard;
vcl::Window* pFocusWin = Application::GetFocusWindow();
if (!pFocusWin)
return false;
uno::Reference<accessibility::XAccessibleEditableText> xText;
try
{
uno::Reference<accessibility::XAccessible> xAccessible(pFocusWin->GetAccessible());
if (xAccessible.is())
xText = FindFocusedEditableText(xAccessible->getAccessibleContext());
}
catch (const uno::Exception&)
{
TOOLS_WARN_EXCEPTION("vcl.qt5", "Exception in getting input method surrounding text");
}
bool result = false;
if (xText.is())
{
rPosition = xText->getCaretPosition();
if (rPosition != -1)
{
result = true;
if (pText)
*pText = toQString(xText->getText());
sal_Int32 nSelStart = xText->getSelectionStart();
sal_Int32 nSelEnd = xText->getSelectionEnd();
if (nSelStart == nSelEnd)
{
rAnchor = rPosition;
if (pSelection)
result = false;
}
else
{
if (rPosition == nSelStart)
rAnchor = nSelEnd;
else
rAnchor = nSelStart;
if (pSelection)
*pSelection = toQString(xText->getSelectedText());
}
return true;
}
}
return result;
}
QVariant Qt5Widget::inputMethodQuery(Qt::InputMethodQuery property) const
{
switch (property)
{
case Qt::ImSurroundingText:
{
QString aText;
sal_Int32 nCursorPos, nAnchor;
if (lcl_retrieveSurrounding(nCursorPos, nAnchor, &aText, nullptr))
return QVariant(aText);
[[fallthrough]];
}
case Qt::ImCursorPosition:
{
sal_Int32 nCursorPos, nAnchor;
if (lcl_retrieveSurrounding(nCursorPos, nAnchor, nullptr, nullptr))
return QVariant(static_cast<int>(nCursorPos));
[[fallthrough]];
}
case Qt::ImCursorRectangle:
{
SalExtTextInputPosEvent aPosEvent;
m_rFrame.CallCallback(SalEvent::ExtTextInputPos, &aPosEvent);
return QVariant(
QRect(aPosEvent.mnX, aPosEvent.mnY, aPosEvent.mnWidth, aPosEvent.mnHeight));
}
case Qt::ImAnchorPosition:
{
sal_Int32 nCursorPos, nAnchor;
if (lcl_retrieveSurrounding(nCursorPos, nAnchor, nullptr, nullptr))
return QVariant(static_cast<int>(nAnchor));
[[fallthrough]];
}
case Qt::ImCurrentSelection:
{
QString aSelection;
sal_Int32 nCursorPos, nAnchor;
if (lcl_retrieveSurrounding(nCursorPos, nAnchor, nullptr, &aSelection))
return QVariant(aSelection);
[[fallthrough]];
}
default:
return QWidget::inputMethodQuery(property);
}
return QVariant();
}
void Qt5Widget::endExtTextInput()
{
if (m_bNonEmptyIMPreeditSeen)
{
m_rFrame.CallCallback(SalEvent::EndExtTextInput, nullptr);
m_bNonEmptyIMPreeditSeen = false;
}
}
void Qt5Widget::changeEvent(QEvent* pEvent)
{
switch (pEvent->type())
{
case QEvent::FontChange:
[[fallthrough]];
case QEvent::PaletteChange:
[[fallthrough]];
case QEvent::StyleChange:
{
auto* pSalInst(static_cast<Qt5Instance*>(GetSalData()->m_pInstance));
assert(pSalInst);
pSalInst->UpdateStyle(QEvent::FontChange == pEvent->type());
break;
}
default:
break;
}
QWidget::changeEvent(pEvent);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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