From f9c48bf0cec2dd1a346f6724675ee6977493fe8d Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Tue, 30 May 2017 15:31:45 +1000
Subject: [PATCH] Allow transform effect rotation from -360 to 360

---
 python/core/effects/qgstransformeffect.sip | 10 ++++------
 src/core/effects/qgstransformeffect.h      | 12 ++++++------
 src/gui/effects/qgspainteffectwidget.cpp   |  1 +
 src/ui/effects/widget_transform.ui         |  3 +++
 4 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/python/core/effects/qgstransformeffect.sip b/python/core/effects/qgstransformeffect.sip
index dcd30259512..136afd35b9d 100644
--- a/python/core/effects/qgstransformeffect.sip
+++ b/python/core/effects/qgstransformeffect.sip
@@ -157,16 +157,14 @@ class QgsTransformEffect : QgsPaintEffect
 
     void setRotation( const double rotation );
 %Docstring
- Sets the transform rotation.
- \param rotation degrees to rotate, clockwise
-.. seealso:: rotation
+ Sets the transform ``rotation``, in degrees clockwise.
+.. seealso:: rotation()
 %End
 
     double rotation() const;
 %Docstring
- Returns the transform rotation.
- :return: rotation in degrees clockwise
-.. seealso:: setRotation
+ Returns the transform rotation, in degrees clockwise.
+.. seealso:: setRotation()
  :rtype: float
 %End
 
diff --git a/src/core/effects/qgstransformeffect.h b/src/core/effects/qgstransformeffect.h
index 4179fc5aa42..2d50811fffb 100644
--- a/src/core/effects/qgstransformeffect.h
+++ b/src/core/effects/qgstransformeffect.h
@@ -149,15 +149,15 @@ class CORE_EXPORT QgsTransformEffect : public QgsPaintEffect
      */
     double scaleY() const { return mScaleY; }
 
-    /** Sets the transform rotation.
-     * \param rotation degrees to rotate, clockwise
-     * \see rotation
+    /**
+     * Sets the transform \a rotation, in degrees clockwise.
+     * \see rotation()
      */
     void setRotation( const double rotation ) { mRotation = rotation; }
 
-    /** Returns the transform rotation.
-     * \returns rotation in degrees clockwise
-     * \see setRotation
+    /**
+     * Returns the transform rotation, in degrees clockwise.
+     * \see setRotation()
      */
     double rotation() const { return mRotation; }
 
diff --git a/src/gui/effects/qgspainteffectwidget.cpp b/src/gui/effects/qgspainteffectwidget.cpp
index a15c7232372..74039f9267e 100644
--- a/src/gui/effects/qgspainteffectwidget.cpp
+++ b/src/gui/effects/qgspainteffectwidget.cpp
@@ -577,6 +577,7 @@ QgsTransformWidget::QgsTransformWidget( QWidget *parent )
                                   << QgsUnitTypes::RenderPoints << QgsUnitTypes::RenderInches );
   mSpinTranslateX->setClearValue( 0 );
   mSpinTranslateY->setClearValue( 0 );
+  mRotationSpinBox->setClearValue( 0 );
   mSpinShearX->setClearValue( 0 );
   mSpinShearY->setClearValue( 0 );
   mSpinScaleX->setClearValue( 100.0 );
diff --git a/src/ui/effects/widget_transform.ui b/src/ui/effects/widget_transform.ui
index ed2b0a50ae1..268f9c56d95 100644
--- a/src/ui/effects/widget_transform.ui
+++ b/src/ui/effects/widget_transform.ui
@@ -117,6 +117,9 @@
        <property name="suffix">
         <string> °</string>
        </property>
+       <property name="minimum">
+        <double>-360.000000000000000</double>
+       </property>
        <property name="maximum">
         <double>360.000000000000000</double>
        </property>