xref: /OK3568_Linux_fs/buildroot/package/qt5/qt5wayland/0007-qwaylandwindow-Support-setting-window-flags-and-attr.patch (revision 4882a59341e53eb6f0b4789bf948001014eff981)

From d4bd42f942efbc2c93ccc420969c88ff20bfdaab Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Thu, 7 May 2020 09:12:08 +0800
Subject: [PATCH 07/17] qwaylandwindow: Support setting window flags and attrs

Support setting window flags and attrs through app_id, for example:
app_id = "attrs=alpha:0.5;flags=stay-on-top|stay-on-bottom|no-focus"

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
 src/client/qwaylandwindow.cpp | 60 +++++++++++++++++++++++++++++++++++
 src/client/qwaylandwindow_p.h |  6 ++++
 2 files changed, 66 insertions(+)

diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp
index 6ec9e99..7c18a72 100644
--- a/src/client/qwaylandwindow.cpp
+++ b/src/client/qwaylandwindow.cpp
@@ -117,6 +117,35 @@ void QWaylandWindow::ensureSize()
         mBackingStore->ensureSize();
 }

+/* HACK: Set window status through app id */
+void QWaylandWindow::applyWindowStatus()
+{
+    char s[256];
+
+    if (!mShellSurface)
+        return;
+
+    snprintf(s, sizeof(s), "attrs=alpha:%f|", mOpacity);
+
+    strcat(s, ";flags=");
+
+    if (mBlocked)
+        strcat(s, "blocked|");
+    else
+        strcat(s, "-blocked|");
+
+#define SET_FLAG(flag, str) \
+    if (mFlags & (flag)) strcat(s, str "|"); \
+    else strcat(s, "-" str "|");
+
+    SET_FLAG(Qt::WindowStaysOnTopHint, "stay-on-top");
+    SET_FLAG(Qt::WindowStaysOnBottomHint, "stay-on-bottom");
+    SET_FLAG(Qt::WindowDoesNotAcceptFocus, "no-focus");
+    SET_FLAG(Qt::WindowTransparentForInput, "trans-input");
+
+    mShellSurface->setAppId(QLatin1String(s));
+}
+
 void QWaylandWindow::initWindow()
 {
     if (window()->type() == Qt::Desktop)
@@ -464,6 +493,13 @@ void QWaylandWindow::lower()
         mShellSurface->lower();
 }

+void QWaylandWindow::setOpacity(qreal level)
+{
+    mOpacity = level;
+
+    applyWindowStatus();
+}
+
 void QWaylandWindow::setMask(const QRegion &mask)
 {
     QReadLocker locker(&mSurfaceLock);
@@ -492,6 +528,28 @@ void QWaylandWindow::setMask(const QRegion &mask)
     mSurface->commit();
 }

+bool QWaylandWindow::windowEvent(QEvent *event)
+{
+    switch (event->type()) {
+    case QEvent::WindowBlocked:
+        {
+            mBlocked = true;
+            applyWindowStatus();
+        }
+        break;
+    case QEvent::WindowUnblocked:
+        {
+            mBlocked = false;
+            applyWindowStatus();
+        }
+        break;
+    default:
+        break;
+    }
+
+    return QPlatformWindow::windowEvent(event);
+}
+
 void QWaylandWindow::applyConfigureWhenPossible()
 {
     QMutexLocker resizeLocker(&mResizeLock);
@@ -810,6 +868,8 @@ void QWaylandWindow::setWindowFlags(Qt::WindowFlags flags)

     mFlags = flags;
     createDecoration();
+
+    applyWindowStatus();
 }

 bool QWaylandWindow::createDecoration()
diff --git a/src/client/qwaylandwindow_p.h b/src/client/qwaylandwindow_p.h
index c0a7634..afd318c 100644
--- a/src/client/qwaylandwindow_p.h
+++ b/src/client/qwaylandwindow_p.h
@@ -153,8 +153,11 @@ public:
     void raise() override;
     void lower() override;

+    void setOpacity(qreal level) override;
     void setMask(const QRegion &region) override;

+    bool windowEvent(QEvent *event) override;
+
     int scale() const;
     qreal devicePixelRatio() const override;

@@ -257,12 +260,14 @@ protected:
     QRegion mMask;
     QRegion mOpaqueArea;
     Qt::WindowStates mLastReportedWindowStates = Qt::WindowNoState;
+    qreal mOpacity = 1.0f;

     QWaylandShmBackingStore *mBackingStore = nullptr;
     QWaylandBuffer *mQueuedBuffer = nullptr;
     QRegion mQueuedBufferDamage;

 private:
+    void applyWindowStatus();
     void setGeometry_helper(const QRect &rect);
     void initWindow();
     void initializeWlSurface();
@@ -279,6 +284,7 @@ private:
     void handleScreensChanged();
     void sendRecursiveExposeEvent();

+    bool mBlocked = false;
     bool mInResizeFromApplyConfigure = false;
     bool lastVisible = false;
     QRect mLastExposeGeometry;
--
2.20.1