Krita: hack around tablet issues with un-patched Qt 5.12

1 files changed, 67 insertions, 0 deletions

diff --git a/kde/patch/krita/krita_qtabletevents.patch b/kde/patch/krita/krita_qtabletevents.patch
new file mode 100644
index 0000000..a1d3869
--- /dev/null
+++ b/kde/patch/krita/krita_qtabletevents.patch
@@ -0,0 +1,67 @@
+# NOTE: original patch: https://cgit.kde.org/krita.git/commit/?id=a3193fe2
+# But first part (patch to ext_qt)) has been removed due to failure to apply.
+# -- Eric Hameleers
+
+From a3193fe273c3f2c3b5493f77724a4bc099ae5e36 Mon Sep 17 00:00:00 2001
+From: Dmitry Kazakov <dimula73@gmail.com>
+Date: Mon, 11 Mar 2019 16:49:31 +0300
+Subject: Add a hacky patch that ensures QTabletEvents to be ignored in
+ distribution builds
+
+If we ensure that all the tablet events are ignored, then Qt
+will always generate synthesized mouse events, avoiding the
+problem of lost Enter/Leave events.
+
+We also mark our own build of Qt about the presence of the fix
+(therefore, it doesn't need this hack).
+---
+ libs/ui/input/kis_input_manager.cpp                | 20 ++++++++++++++++
+
+index 30a4677..d173543 100644
+--- a/libs/ui/input/kis_input_manager.cpp
++++ b/libs/ui/input/kis_input_manager.cpp
+@@ -496,6 +496,13 @@ bool KisInputManager::eventFilterImpl(QEvent * event)
+         //Reset signal compressor to prevent processing events before press late
+         d->resetCompressor();
+         d->eatOneMousePress();
++
++#if defined Q_OS_LINUX && !defined QT_HAS_ENTER_LEAVE_PATCH
++        // remove this hack when this patch is integrated:
++        // https://codereview.qt-project.org/#/c/255384/
++        event->setAccepted(false);
++#endif
++
+         break;
+     }
+     case QEvent::TabletMove: {
+@@ -517,6 +524,12 @@ bool KisInputManager::eventFilterImpl(QEvent * event)
+          */
+         d->blockMouseEvents();
+ 
++#if defined Q_OS_LINUX && !defined QT_HAS_ENTER_LEAVE_PATCH
++        // remove this hack when this patch is integrated:
++        // https://codereview.qt-project.org/#/c/255384/
++        event->setAccepted(false);
++#endif
++
+         break;
+     }
+     case QEvent::TabletRelease: {
+@@ -529,6 +542,13 @@ bool KisInputManager::eventFilterImpl(QEvent * event)
+         retval = d->matcher.buttonReleased(tabletEvent->button(), tabletEvent);
+         retval = true;
+         event->setAccepted(true);
++
++#if defined Q_OS_LINUX && !defined QT_HAS_ENTER_LEAVE_PATCH
++        // remove this hack when this patch is integrated:
++        // https://codereview.qt-project.org/#/c/255384/
++        event->setAccepted(false);
++#endif
++
+         break;
+     }
+ 
+-- 
+cgit v1.1
+
+