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Merge remote-tracking branch 'origin/5.15' into dev

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Change-Id: Ie9d7d49216b7d03f83306cf06f6439080f3457a3
This commit is contained in:
Qt Forward Merge Bot 2019-10-19 03:02:22 +02:00
commit d91b1b2796
2 changed files with 15 additions and 2 deletions
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6
src/plugins/platforms/wayland/qwaylandwindow.cpp
View File

@ -303,8 +303,10 @@ void QWaylandWindow::setWindowTitle(const QString &title)
const QString formatted = formatWindowTitle(title, separator);
const int libwaylandMaxBufferSize = 4096;
// Some parts of the buffer is used for metadata, so subtract 100 to be on the safe side
const int maxLength = libwaylandMaxBufferSize - 100;
// Some parts of the buffer is used for metadata, so subtract 100 to be on the safe side.
// Also, QString is in utf-16, which means that in the worst case each character will be
// three bytes when converted to utf-8 (which is what libwayland uses), so divide by three.
const int maxLength = libwaylandMaxBufferSize / 3 - 100;
auto truncated = QStringRef(&formatted).left(maxLength);
if (truncated.length() < formatted.length()) {

11
tests/auto/wayland/client/tst_client.cpp
View File

@ -184,6 +184,7 @@ private slots:
void glWindow();
#endif // QT_CONFIG(opengl)
void longWindowTitle();
void longWindowTitleWithUtf16Characters();
private:
MockCompositor *compositor = nullptr;
@ -502,6 +503,16 @@ void tst_WaylandClient::longWindowTitle()
QTRY_VERIFY(compositor->surface());
}
void tst_WaylandClient::longWindowTitleWithUtf16Characters()
{
QWindow window;
QString absurdlyLongTitle = QString("三").repeated(10000);
Q_ASSERT(absurdlyLongTitle.length() == 10000); // just making sure the test isn't broken
window.setTitle(absurdlyLongTitle);
window.show();
QTRY_VERIFY(compositor->surface());
}
int main(int argc, char **argv)
{
setenv("XDG_RUNTIME_DIR", ".", 1);