From a903fb2c64a96a28dccd590648ed8649aac5526b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Fri, 25 Jul 2014 11:20:34 +0200
Subject: [PATCH] Implement borderingScreenEdges for the DecoratedClientImpl

Uses the QuickTileMode of the Client to indicate which borders to
remove. This could be extended to be in general when a window borders
the screen edge and not just for quick tile mode.
---
 decorations/decoratedclient.cpp | 32 ++++++++++++++++++++++++++++++++
 decorations/decoratedclient.h   |  2 ++
 2 files changed, 34 insertions(+)

diff --git a/decorations/decoratedclient.cpp b/decorations/decoratedclient.cpp
index 14ae4f91a7..e155925ba7 100644
--- a/decorations/decoratedclient.cpp
+++ b/decorations/decoratedclient.cpp
@@ -86,6 +86,11 @@ DecoratedClientImpl::DecoratedClientImpl(Client *client, KDecoration2::Decorated
             decoration->update();
         }
     );
+    connect(client, &Client::quickTileModeChanged, decoratedClient,
+        [this, decoratedClient]() {
+            emit decoratedClient->borderingScreenEdgesChanged(borderingScreenEdges());
+        }
+    );
 }
 
 DecoratedClientImpl::~DecoratedClientImpl() = default;
@@ -188,6 +193,33 @@ bool DecoratedClientImpl::isMaximizedHorizontally() const
     return m_client->maximizeMode() & KDecorationDefines::MaximizeHorizontal;
 }
 
+Qt::Edges DecoratedClientImpl::borderingScreenEdges() const
+{
+    Qt::Edges edges;
+    const KDecorationDefines::QuickTileMode mode = m_client->quickTileMode();
+    if (mode.testFlag(KDecorationDefines::QuickTileLeft)) {
+        edges |= Qt::LeftEdge;
+        if (!mode.testFlag(KDecorationDefines::QuickTileTop) && !mode.testFlag(KDecorationDefines::QuickTileBottom)) {
+            // using complete side
+            edges |= Qt::TopEdge | Qt::BottomEdge;
+        }
+    }
+    if (mode.testFlag(KDecorationDefines::QuickTileTop)) {
+        edges |= Qt::TopEdge;
+    }
+    if (mode.testFlag(KDecorationDefines::QuickTileRight)) {
+        edges |= Qt::RightEdge;
+        if (!mode.testFlag(KDecorationDefines::QuickTileTop) && !mode.testFlag(KDecorationDefines::QuickTileBottom)) {
+            // using complete side
+            edges |= Qt::TopEdge | Qt::BottomEdge;
+        }
+    }
+    if (mode.testFlag(KDecorationDefines::QuickTileBottom)) {
+        edges |= Qt::BottomEdge;
+    }
+    return edges;
+}
+
 void DecoratedClientImpl::createRenderer()
 {
     if (Compositor::self()->hasScene()) {
diff --git a/decorations/decoratedclient.h b/decorations/decoratedclient.h
index 100b9c3290..65951a0e16 100644
--- a/decorations/decoratedclient.h
+++ b/decorations/decoratedclient.h
@@ -65,6 +65,8 @@ public:
     int width() const override;
     WId windowId() const override;
 
+    Qt::Edges borderingScreenEdges() const override;
+
     void requestClose() override;
     void requestContextHelp() override;
     void requestMaximize(Qt::MouseButtons buttons) override;