diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbscreen.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbscreen.cpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp index 4f0c3ba6bb..fc80662c46 100644 --- a/src/plugins/platforms/xcb/qxcbscreen.cpp +++ b/src/plugins/platforms/xcb/qxcbscreen.cpp @@ -66,6 +66,7 @@ QXcbScreen::QXcbScreen(QXcbConnection *connection, xcb_screen_t *scr, , m_orientation(Qt::PrimaryOrientation) , m_number(number) , m_refreshRate(60) + , m_forcedDpi(-1) { if (connection->hasXRandr()) xcb_randr_select_input(xcb_connection(), screen()->root, true); @@ -82,6 +83,9 @@ QXcbScreen::QXcbScreen(QXcbConnection *connection, xcb_screen_t *scr, if (m_availableGeometry.isEmpty()) m_availableGeometry = QRect(QPoint(), m_virtualSize); + readXResources(); + + #ifdef Q_XCB_DEBUG qDebug(); qDebug("Screen output %s of xcb screen %d:", m_outputName.toUtf8().constData(), m_number); @@ -243,6 +247,9 @@ QImage::Format QXcbScreen::format() const QDpi QXcbScreen::logicalDpi() const { + if (m_forcedDpi > 0) + return QDpi(m_forcedDpi, m_forcedDpi); + return QDpi(Q_MM_PER_INCH * m_virtualSize.width() / m_virtualSizeMillimeters.width(), Q_MM_PER_INCH * m_virtualSize.height() / m_virtualSizeMillimeters.height()); } @@ -474,4 +481,41 @@ QPixmap QXcbScreen::grabWindow(WId window, int x, int y, int width, int height) return result; } +void QXcbScreen::readXResources() +{ + int offset = 0; + QByteArray resources; + while(1) { + xcb_get_property_reply_t *reply = + xcb_get_property_reply(xcb_connection(), + xcb_get_property_unchecked(xcb_connection(), false, screen()->root, + XCB_ATOM_RESOURCE_MANAGER, + XCB_ATOM_STRING, offset/4, 8192), NULL); + bool more = false; + if (reply && reply->format == 8 && reply->type == XCB_ATOM_STRING) { + resources += QByteArray((const char *)xcb_get_property_value(reply), xcb_get_property_value_length(reply)); + offset += xcb_get_property_value_length(reply); + more = reply->bytes_after != 0; + } + + if (reply) + free(reply); + + if (!more) + break; + } + + QList<QByteArray> split = resources.split('\n'); + for (int i = 0; i < split.size(); ++i) { + const QByteArray &r = split.at(i); + if (r.startsWith("Xft.dpi:\t")) { + bool ok; + int dpi = r.mid(sizeof("Xft.dpi:")).toInt(&ok); + if (ok) + m_forcedDpi = dpi; + break; + } + } +} + QT_END_NAMESPACE |