From 89a4df651d22faa3c5de67999340c1037418975b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Wed, 28 Oct 2015 11:16:48 +0100
Subject: [PATCH] [wayland] Sync resizes

Similar to X11 world: we send a sync request on each size change and
block till we get the next damage with the proper size.

Testing seems to show a very smooth resize experience. We automatically
sync to the resize speed of the client.

Maybe we need a timeout in case the client isn't able to resize to the
requested size.
---
 shell_client.cpp | 10 ++++++++++
 shell_client.h   |  2 ++
 utils.h          |  2 +-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/shell_client.cpp b/shell_client.cpp
index 02504f700c..ee622b0d56 100644
--- a/shell_client.cpp
+++ b/shell_client.cpp
@@ -739,4 +739,14 @@ QPoint ShellClient::transientPlacementHint() const
     return m_shellSurface->transientOffset();
 }
 
+bool ShellClient::isWaitingForMoveResizeSync() const
+{
+    return m_positionAfterResize.isValid();
+}
+
+void ShellClient::doResizeSync()
+{
+    requestGeometry(moveResizeGeometry());
+}
+
 }
diff --git a/shell_client.h b/shell_client.h
index 8d21b17cf9..fee22c459a 100644
--- a/shell_client.h
+++ b/shell_client.h
@@ -122,6 +122,8 @@ protected:
     void setGeometryRestore(const QRect &geo) override {
         m_geomMaximizeRestore = geo;
     }
+    void doResizeSync() override;
+    bool isWaitingForMoveResizeSync() const override;
 
 private Q_SLOTS:
     void clientFullScreenChanged(bool fullScreen);
diff --git a/utils.h b/utils.h
index b1a55cacc0..3ec977bc75 100644
--- a/utils.h
+++ b/utils.h
@@ -206,7 +206,7 @@ static inline int bitCount(uint32_t mask)
 class ClearablePoint
 {
 public:
-    inline bool isValid() {
+    inline bool isValid() const {
         return m_valid;
     }