IDEA-86461 Mouse wheel tilt doesn't scroll horizontally

'Scroll left' and 'Scroll right' actions have been added

platform/platform-impl/src/com/intellij/openapi/editor/actions/EditorActionUtil.java

@@ -75,15 +75,21 @@ public class EditorActionUtil {
    * Tries to change given editor's viewport position in vertical dimension by the given number of visual lines.
    * 
    * @param editor     target editor which viewport position should be changed
-   * @param lineShift  defines viewport position's change length
+   * @param lineShift  defines viewport position's vertical change length
+   * @param columnShift  defines viewport position's horizontal change length
    * @param moveCaret  flag that identifies whether caret should be moved if its current position becomes off-screen
    */
-  public static void scrollRelatively(Editor editor, int lineShift, boolean moveCaret) {
+  public static void scrollRelatively(Editor editor, int lineShift, int columnShift, boolean moveCaret) {
     if (lineShift != 0) {
       editor.getScrollingModel().scrollVertically(
         editor.getScrollingModel().getVerticalScrollOffset() + lineShift * editor.getLineHeight()
       );
     }
+    if (columnShift != 0) {
+      editor.getScrollingModel().scrollHorizontally(
+        editor.getScrollingModel().getHorizontalScrollOffset() + columnShift * EditorUtil.getSpaceWidth(Font.PLAIN, editor)
+      );
+    }
 
     if (!moveCaret) {
       return;

platform/platform-impl/src/com/intellij/openapi/editor/actions/ScrollDownAction.java

@@ -36,7 +36,7 @@ public class ScrollDownAction extends InactiveEditorAction {
   private static class Handler extends EditorActionHandler {
     @Override
     public void execute(Editor editor, DataContext dataContext) {
-      EditorActionUtil.scrollRelatively(editor, 1, false);
+      EditorActionUtil.scrollRelatively(editor, 1, 0, false);
     }
   }
 }

platform/platform-impl/src/com/intellij/openapi/editor/actions/ScrollDownAndMoveAction.java

@@ -34,7 +34,7 @@ public class ScrollDownAndMoveAction extends InactiveEditorAction {
   private static class Handler extends EditorActionHandler {
     @Override
     public void execute(Editor editor, DataContext dataContext) {
-      EditorActionUtil.scrollRelatively(editor, 1, true);
+      EditorActionUtil.scrollRelatively(editor, 1, 0, true);
     }
   }
 }

platform/platform-impl/src/com/intellij/openapi/editor/actions/ScrollLeftAction.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2000-2012 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.openapi.editor.actions;
+
+import com.intellij.openapi.actionSystem.DataContext;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
+
+/**
+ * @author Denis Zhdanov
+ * @since 5/25/12 9:26 AM
+ */
+public class ScrollLeftAction extends InactiveEditorAction {
+  public ScrollLeftAction() {
+    super(new Handler());
+  }
+
+  private static class Handler extends EditorActionHandler {
+    @Override
+    public void execute(Editor editor, DataContext dataContext) {
+      EditorActionUtil.scrollRelatively(editor, 0, -1, false);
+    }
+  }
+}

platform/platform-impl/src/com/intellij/openapi/editor/actions/ScrollRightAction.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2000-2012 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.openapi.editor.actions;
+
+import com.intellij.openapi.actionSystem.DataContext;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
+
+/**
+ * @author Denis Zhdanov
+ * @since 5/25/12 9:25 AM
+ */
+public class ScrollRightAction extends InactiveEditorAction {
+  
+  public ScrollRightAction() {
+    super(new Handler());
+  }
+
+  private static class Handler extends EditorActionHandler {
+    @Override
+    public void execute(Editor editor, DataContext dataContext) {
+      EditorActionUtil.scrollRelatively(editor, 0, 1, false);
+    }
+  }
+}

platform/platform-impl/src/com/intellij/openapi/editor/actions/ScrollUpAction.java

@@ -36,7 +36,7 @@ public class ScrollUpAction extends InactiveEditorAction {
   private static class Handler extends EditorActionHandler {
     @Override
     public void execute(Editor editor, DataContext dataContext) {
-      EditorActionUtil.scrollRelatively(editor, -1, false);
+      EditorActionUtil.scrollRelatively(editor, -1, 0, false);
     }
   }
 }

platform/platform-impl/src/com/intellij/openapi/editor/actions/ScrollUpAndMoveAction.java

@@ -34,7 +34,7 @@ public class ScrollUpAndMoveAction extends InactiveEditorAction {
   private static class Handler extends EditorActionHandler {
     @Override
     public void execute(Editor editor, DataContext dataContext) {
-      EditorActionUtil.scrollRelatively(editor, -1, true);
+      EditorActionUtil.scrollRelatively(editor, -1, 0, true);
     }
   }
 }

platform/platform-resources-en/src/messages/ActionsBundle.properties

@@ -91,6 +91,8 @@ action.EditorScrollUp.text=Scroll Up
 action.EditorScrollDown.text=Scroll Down
 action.EditorScrollUpAndMove.text=Scroll Up and Move if Necessary
 action.EditorScrollDownAndMove.text=Scroll Down and Move if Necessary
+action.EditorScrollLeft.text=Scroll Left
+action.EditorScrollRight.text=Scroll Right
 action.EditorScrollTop.text=Scroll to Top
 action.EditorScrollBottom.text=Scroll to Bottom
 action.EditorMoveUpAndScroll.text=Move Up and Scroll

platform/platform-resources/src/idea/PlatformActions.xml

@@ -61,6 +61,8 @@
       <action id="EditorScrollDown" class="com.intellij.openapi.editor.actions.ScrollDownAction"/>
       <action id="EditorScrollUpAndMove" class="com.intellij.openapi.editor.actions.ScrollUpAndMoveAction"/>
       <action id="EditorScrollDownAndMove" class="com.intellij.openapi.editor.actions.ScrollDownAndMoveAction"/>
+      <action id="EditorScrollRight" class="com.intellij.openapi.editor.actions.ScrollRightAction"/>
+      <action id="EditorScrollLeft" class="com.intellij.openapi.editor.actions.ScrollLeftAction"/>
       <action id="EditorScrollTop" class="com.intellij.openapi.editor.actions.ScrollToTopAction"/>
       <action id="EditorScrollBottom" class="com.intellij.openapi.editor.actions.ScrollToBottomAction"/>
       <action id="EditorMoveUpAndScroll" class="com.intellij.openapi.editor.actions.MoveUpAndScrollAction"/>