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Bug#944856: buster-pu: package qtbase-opensource-src/5.11.3+dfsg1-1+deb10u2



Package: release.debian.org
Severity: normal
Tags: buster
User: release.debian.org@packages.debian.org
Usertags: pu

Dear Release team,

I would like to update qtbase-opensource-src in Buster, to fix the following
bugs:

#911702 — okular does not print to network printer
#911844 — okular prints to the wrong printer
#935909 — segfault when removing rich content (like tables) from QLabel
#935627 — graphics tablet hover events (tooltips/mouse-over) broken

The fix for the first two bugs has already been ACKed during the freeze in
#930669, but the fix did not reach bullseye because it was built against gcc-8
from sid.

All these bugs are already fixed in sid/bullseye.

The debdiff against the current version in buster (which was a security
upload) is attached.

--
Dmitry Shachnev
diff --git a/debian/changelog b/debian/changelog
index 2dc6b71..ce68d2f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,17 @@
+qtbase-opensource-src (5.11.3+dfsg1-1+deb10u2) UNRELEASED; urgency=medium
+
+  [ Dmitry Shachnev ]
+  * Backport upstream patch to add support for non-PPD printers and avoid
+    silent fallback to a printer supporting PPD (closes: #911702, #911844).
+  * Backport upstream patch to fix crash in QStyleSheetStyle::repolish()
+    when using QLabels with rich text (closes: #935909).
+
+  [ Melvin Vermeeren ]
+  * Backport upstream patch to fix graphics tablet hover events (closes:
+    #935627).
+
+ -- Dmitry Shachnev <mitya57@debian.org>  Sat, 16 Nov 2019 15:48:41 +0300
+
 qtbase-opensource-src (5.11.3+dfsg1-1+deb10u1) buster-security; urgency=high
 
   * Fix crash when text contains too many directional chars (CVE-2019-18281).
diff --git a/debian/patches/ensure-qtabletevent-is-not-pre-accepted.patch b/debian/patches/ensure-qtabletevent-is-not-pre-accepted.patch
new file mode 100644
index 0000000..a0ff4f3
--- /dev/null
+++ b/debian/patches/ensure-qtabletevent-is-not-pre-accepted.patch
@@ -0,0 +1,38 @@
+Description: ensure that QTabletEvent is not pre-accepted before sending
+ In QWidget-world it's normal for input events to have the accepted
+ flag false by default, so that it's obvious after visiting a widget
+ subclass that does not override a particular handler function that it
+ did not handle that event type at all.  For tablet events in
+ particular, the contract (to which we've been paying more attention to
+ ensure that QTBUG-47007 remains properly fixed) is that if a
+ QTabletEvent is not accepted, a mouse event will follow.
+ Tablet-unaware applications need to get the same mouse events from a
+ Wacom stylus as they would receive from an actual mouse.
+ .
+ In this case the issue was missing hover events (mouse movements
+ in which no mouse button is pressed).  Without those, the enterEvent
+ and exitEvent virtuals are also not invoked properly.
+Origin: upstream, https://code.qt.io/cgit/qt/qtbase.git/commit/?id=b4b706d454b785ae
+Bug: https://bugs.debian.org/935627
+Last-Update: 2019-08-24
+
+--- a/src/widgets/kernel/qapplication.cpp
++++ b/src/widgets/kernel/qapplication.cpp
+@@ -3374,6 +3374,7 @@ bool QApplication::notify(QObject *recei
+                                 tablet->tangentialPressure(), tablet->rotation(), tablet->z(),
+                                 tablet->modifiers(), tablet->uniqueId(), tablet->button(), tablet->buttons());
+                 te.spont = e->spontaneous();
++                te.setAccepted(false);
+                 res = d->notify_helper(w, w == receiver ? tablet : &te);
+                 eventAccepted = ((w == receiver) ? tablet : &te)->isAccepted();
+                 e->spont = false;
+--- a/src/widgets/kernel/qwidgetwindow.cpp
++++ b/src/widgets/kernel/qwidgetwindow.cpp
+@@ -1021,6 +1021,7 @@ void QWidgetWindow::handleTabletEvent(QT
+                         event->pressure(), event->xTilt(), event->yTilt(), event->tangentialPressure(),
+                         event->rotation(), event->z(), event->modifiers(), event->uniqueId(), event->button(), event->buttons());
+         ev.setTimestamp(event->timestamp());
++        ev.setAccepted(false);
+         QGuiApplication::forwardEvent(widget, &ev, event);
+         event->setAccepted(ev.isAccepted());
+     }
diff --git a/debian/patches/raw_printers.diff b/debian/patches/raw_printers.diff
new file mode 100644
index 0000000..9ac8395
--- /dev/null
+++ b/debian/patches/raw_printers.diff
@@ -0,0 +1,92 @@
+Description: cups: support raw printers
+ They don't have a ppd but we don't *really* need a ppd to just print.
+Origin: upstream, https://code.qt.io/cgit/qt/qtbase.git/commit/?id=84cc8d0badb4abc3
+Last-Update: 2019-06-16
+
+--- a/src/plugins/printsupport/cups/qcupsprintengine.cpp
++++ b/src/plugins/printsupport/cups/qcupsprintengine.cpp
+@@ -104,7 +104,11 @@ void QCupsPrintEngine::setProperty(Print
+         break;
+     case PPK_QPageLayout: {
+         QPageLayout pageLayout = value.value<QPageLayout>();
+-        if (pageLayout.isValid() && (d->m_printDevice.isValidPageLayout(pageLayout, d->resolution) || d->m_printDevice.supportsCustomPageSizes())) {
++        if (pageLayout.isValid() && (d->m_printDevice.isValidPageLayout(pageLayout, d->resolution)
++                                     || d->m_printDevice.supportsCustomPageSizes()
++                                     || d->m_printDevice.supportedPageSizes().isEmpty())) {
++            // supportedPageSizes().isEmpty() because QPageSetupWidget::initPageSizes says
++            // "If no available printer page sizes, populate with all page sizes"
+             d->m_pageLayout = pageLayout;
+             d->setPageSize(pageLayout.pageSize());
+         }
+--- a/src/plugins/printsupport/cups/qppdprintdevice.cpp
++++ b/src/plugins/printsupport/cups/qppdprintdevice.cpp
+@@ -71,7 +71,7 @@ QPpdPrintDevice::QPpdPrintDevice(const Q
+             m_cupsInstance = parts.at(1).toUtf8();
+         loadPrinter();
+ 
+-        if (m_cupsDest && m_ppd) {
++        if (m_cupsDest) {
+             m_name = printerOption("printer-info");
+             m_location = printerOption("printer-location");
+             m_makeAndModel = printerOption("printer-make-and-model");
+@@ -87,10 +87,6 @@ QPpdPrintDevice::QPpdPrintDevice(const Q
+             // Cups ppd_file_t variable_sizes custom_min custom_max
+             // PPD MaxMediaWidth MaxMediaHeight
+             m_supportsCustomPageSizes = type & CUPS_PRINTER_VARIABLE;
+-            m_minimumPhysicalPageSize = QSize(m_ppd->custom_min[0], m_ppd->custom_min[1]);
+-            m_maximumPhysicalPageSize = QSize(m_ppd->custom_max[0], m_ppd->custom_max[1]);
+-            m_customMargins = QMarginsF(m_ppd->custom_margins[0], m_ppd->custom_margins[3],
+-                                        m_ppd->custom_margins[2], m_ppd->custom_margins[1]);
+         }
+     }
+ }
+@@ -107,7 +103,7 @@ QPpdPrintDevice::~QPpdPrintDevice()
+ 
+ bool QPpdPrintDevice::isValid() const
+ {
+-    return m_cupsDest && m_ppd;
++    return m_cupsDest;
+ }
+ 
+ bool QPpdPrintDevice::isDefault() const
+@@ -152,8 +148,8 @@ void QPpdPrintDevice::loadPageSizes() co
+                 }
+             }
+         }
+-        m_havePageSizes = true;
+     }
++    m_havePageSizes = true;
+ }
+ 
+ QPageSize QPpdPrintDevice::defaultPageSize() const
+@@ -505,10 +501,11 @@ void QPpdPrintDevice::loadPrinter()
+             ppdMarkDefaults(m_ppd);
+             cupsMarkOptions(m_ppd, m_cupsDest->num_options, m_cupsDest->options);
+             ppdLocalize(m_ppd);
+-        } else {
+-            cupsFreeDests(1, m_cupsDest);
+-            m_cupsDest = 0;
+-            m_ppd = 0;
++
++            m_minimumPhysicalPageSize = QSize(m_ppd->custom_min[0], m_ppd->custom_min[1]);
++            m_maximumPhysicalPageSize = QSize(m_ppd->custom_max[0], m_ppd->custom_max[1]);
++            m_customMargins = QMarginsF(m_ppd->custom_margins[0], m_ppd->custom_margins[3],
++                                        m_ppd->custom_margins[2], m_ppd->custom_margins[1]);
+         }
+     }
+ }
+--- a/src/printsupport/dialogs/qpagesetupdialog_unix.cpp
++++ b/src/printsupport/dialogs/qpagesetupdialog_unix.cpp
+@@ -415,6 +415,12 @@ void QPageSetupWidget::setPrinter(QPrint
+     initPageSizes();
+     updateWidget();
+     updateSavedValues();
++
++    if (m_ui.pageSizeCombo->currentIndex() == -1) {
++        // This can happen in raw printers that since they don't have a default
++        // page size none will get selected so just default to the first size (A4)
++        m_ui.pageSizeCombo->setCurrentIndex(0);
++    }
+ }
+ 
+ // Update the widget with the current settings
diff --git a/debian/patches/repolish_run_on_direct_children.diff b/debian/patches/repolish_run_on_direct_children.diff
new file mode 100644
index 0000000..0c99bf7
--- /dev/null
+++ b/debian/patches/repolish_run_on_direct_children.diff
@@ -0,0 +1,23 @@
+Description: QStyleSheetStyle::repolish: only run on direct children
+ When re-parenting, some widgets change their children. For example
+ QLabel, when set to rich text, will not update, until receiving a polish
+ call, at which time getting a list of all children recursively and then
+ trying to call functions on them will crash, since the children change
+ in the middle of this operation.
+Origin: upstream, https://code.qt.io/cgit/qt/qtbase.git/commit/?id=21dcb96ddca357a6
+Last-Update: 2019-09-06
+
+--- a/src/widgets/styles/qstylesheetstyle.cpp
++++ b/src/widgets/styles/qstylesheetstyle.cpp
+@@ -2878,7 +2878,10 @@ void QStyleSheetStyle::polish(QPalette &
+ 
+ void QStyleSheetStyle::repolish(QWidget *w)
+ {
+-    QList<const QObject *> children = w->findChildren<const QObject *>(QString());
++    QList<const QObject *> children;
++    children.reserve(w->children().size() + 1);
++    for (auto child: qAsConst(w->children()))
++        children.append(child);
+     children.append(w);
+     styleSheetCaches->styleSheetCache.remove(w);
+     updateObjects(children);
diff --git a/debian/patches/series b/debian/patches/series
index 061cef3..c2bba31 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -5,6 +5,9 @@ remove_need_for_glXGetProcAddressARB.patch
 mysql_free_results_when_qsqlquery_finished_is_called.patch
 qprintdialog_duplex.diff
 cve-2019-18281.diff
+raw_printers.diff
+ensure-qtabletevent-is-not-pre-accepted.patch
+repolish_run_on_direct_children.diff
 
 # Debian specific.
 gnukfreebsd.diff

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