From a2c765800bd16d0bf7c71cca20d2af288e1b6101 Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Tue, 15 Dec 2020 22:32:14 +0200
Subject: [PATCH] Drop Screens::supportsTransformations

It's used nowhere.
---
 plugins/platforms/drm/drm_output.cpp  | 11 -----------
 plugins/platforms/drm/drm_output.h    |  2 --
 plugins/platforms/drm/screens_drm.cpp | 11 -----------
 plugins/platforms/drm/screens_drm.h   |  4 ----
 screens.cpp                           |  6 ------
 screens.h                             |  6 ------
 6 files changed, 40 deletions(-)

diff --git a/plugins/platforms/drm/drm_output.cpp b/plugins/platforms/drm/drm_output.cpp
index bebbc40cb9..728bcd7181 100644
--- a/plugins/platforms/drm/drm_output.cpp
+++ b/plugins/platforms/drm/drm_output.cpp
@@ -1049,17 +1049,6 @@ bool DrmOutput::atomicReqModesetPopulate(drmModeAtomicReq *req, bool enable)
     return ret;
 }
 
-bool DrmOutput::supportsTransformations() const
-{
-    if (!m_primaryPlane) {
-        return false;
-    }
-    const auto transformations = m_primaryPlane->supportedTransformations();
-    return transformations.testFlag(DrmPlane::Transformation::Rotate90)
-        || transformations.testFlag(DrmPlane::Transformation::Rotate180)
-        || transformations.testFlag(DrmPlane::Transformation::Rotate270);
-}
-
 int DrmOutput::gammaRampSize() const
 {
     return m_crtc->gammaRampSize();
diff --git a/plugins/platforms/drm/drm_output.h b/plugins/platforms/drm/drm_output.h
index 467085991c..936c2c0fda 100644
--- a/plugins/platforms/drm/drm_output.h
+++ b/plugins/platforms/drm/drm_output.h
@@ -83,8 +83,6 @@ public:
 
     bool initCursor(const QSize &cursorSize);
 
-    bool supportsTransformations() const;
-
     /**
      * Drm planes might be capable of realizing the current output transform without usage
      * of compositing. This is a getter to query the current state of that
diff --git a/plugins/platforms/drm/screens_drm.cpp b/plugins/platforms/drm/screens_drm.cpp
index 8345444e9d..ded84b06a4 100644
--- a/plugins/platforms/drm/screens_drm.cpp
+++ b/plugins/platforms/drm/screens_drm.cpp
@@ -8,14 +8,12 @@
 */
 #include "screens_drm.h"
 #include "drm_backend.h"
-#include "drm_output.h"
 
 namespace KWin
 {
 
 DrmScreens::DrmScreens(DrmBackend *backend, QObject *parent)
     : OutputScreens(backend, parent)
-    , m_backend(backend)
 {
     connect(backend, &DrmBackend::screensQueried, this, &DrmScreens::updateCount);
     connect(backend, &DrmBackend::screensQueried, this, &DrmScreens::changed);
@@ -23,13 +21,4 @@ DrmScreens::DrmScreens(DrmBackend *backend, QObject *parent)
 
 DrmScreens::~DrmScreens() = default;
 
-bool DrmScreens::supportsTransformations(int screen) const
-{
-    const auto enOuts = m_backend->drmEnabledOutputs();
-    if (screen >= enOuts.size()) {
-        return false;
-    }
-    return enOuts.at(screen)->supportsTransformations();
-}
-
 }
diff --git a/plugins/platforms/drm/screens_drm.h b/plugins/platforms/drm/screens_drm.h
index 1f08f1fe7d..860ac1336b 100644
--- a/plugins/platforms/drm/screens_drm.h
+++ b/plugins/platforms/drm/screens_drm.h
@@ -20,10 +20,6 @@ class DrmScreens : public OutputScreens
 public:
     DrmScreens(DrmBackend *backend, QObject *parent = nullptr);
     ~DrmScreens() override;
-
-    bool supportsTransformations(int screen) const override;
-
-    DrmBackend *m_backend;
 };
 
 }
diff --git a/screens.cpp b/screens.cpp
index 81954f49f9..f14a3720f9 100644
--- a/screens.cpp
+++ b/screens.cpp
@@ -201,12 +201,6 @@ bool Screens::isInternal(int screen) const
     return false;
 }
 
-bool Screens::supportsTransformations(int screen) const
-{
-    Q_UNUSED(screen)
-    return false;
-}
-
 Qt::ScreenOrientation Screens::orientation(int screen) const
 {
     Q_UNUSED(screen)
diff --git a/screens.h b/screens.h
index 92e17dc54a..a4b8e03945 100644
--- a/screens.h
+++ b/screens.h
@@ -127,12 +127,6 @@ public:
      */
     virtual bool isInternal(int screen) const;
 
-    /**
-     * @returns @c true if the @p screen can be rotated.
-     * Default implementation returns @c false
-     */
-    virtual bool supportsTransformations(int screen) const;
-
     virtual Qt::ScreenOrientation orientation(int screen) const;
 
     int physicalDpiX(int screen) const;