javauis/eswt_akn/org.eclipse.ercp.swt.s60/native/inc/swtscrollablebase.h
branchRCL_3
changeset 14 04becd199f91
child 24 6c158198356e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_akn/org.eclipse.ercp.swt.s60/native/inc/swtscrollablebase.h	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,144 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 2010 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Nokia Corporation - S60 implementation
+ *******************************************************************************/
+
+
+#ifndef SWTSCROLLABLEBASE_H
+#define SWTSCROLLABLEBASE_H
+
+
+#include <eikscrlb.h>
+#include <eiksbobs.h>
+#include <swtlaffacade.h>
+#include "swtcontrolbase.h"
+
+
+class CSwtScrollBar;
+
+
+/**
+ * ASwtScrollableBase
+ * Base (abstract) class of all scrollable controls
+ * @lib eswt
+ */
+NONSHARABLE_CLASS(ASwtScrollableBase)
+        : public ASwtControlBase
+        , public MSwtScrollable
+        , public MEikScrollBarObserver
+{
+// Own methods
+protected:
+    /**
+     * Default constructor
+     * @param aDisplay parent display
+     * @param aPeer java peer of this class
+     * @param aParent composite parent
+     * @param aStyle control style
+     */
+    inline ASwtScrollableBase(MSwtDisplay& aDisplay, TSwtPeer aPeer,
+    MSwtComposite* aParent, TInt aStyle);
+
+    /**
+     * Destructor
+     */
+    inline ~ASwtScrollableBase();
+
+    /**
+     * Scrollbar frame getter
+     * @return pointer to frame
+     */
+    virtual CEikScrollBarFrame* SbFrame() const =0;
+
+    /**
+     * Default scrollbar model getter
+     * @return model
+     */
+    inline static TEikScrollBarModel DefaultSbModel(TInt aStyle);
+
+    /**
+     * Compute the inner rectangle of a scrollbar frame
+     * @param aRect scrollbar frame container rectangle
+     * @return rectangle contained within the scrollbar frame
+     */
+    TRect SbInnerRect(const TRect& aRect) const;
+
+    /**
+     * Compute the outer rectangle of a scrollbar frame
+     * @param aRect rectangle contained within the scrollbar frame
+     * @return scrollbar frame container rectangle
+     */
+    TRect SbOuterRect(const TRect& aRect) const;
+
+// From MSwtScrollable
+public:
+    MSwtControl* Control();
+    MSwtScrollBar* CreateScrollBarL(TSwtPeer aPeer, TInt aStyle);
+    virtual void SetVisibleScrollBar(TInt aStyle, TBool aVisible);
+    virtual void ScrollBarDestroyed(const MSwtScrollBar* aScrollbar);
+    void ComputeTrim(TRect& aRect) const;
+    TBool HasScrollBars() const;
+
+// From ASwtControlBase
+public:
+    virtual TRect ClientRect() const;
+
+// From MEikScrollBarObserver
+public:
+    virtual void HandleScrollEventL(CEikScrollBar* aScrollBar,
+                                    TEikScrollEvent aEventType);
+
+// Data
+protected:
+    /**
+     * Horizontal scrollbar, may be NULL.
+     * Not own.
+     */
+    CSwtScrollBar* iHScroll;
+
+    /**
+     * Vertical scrollbar, may be NULL.
+     * Not own.
+     */
+    CSwtScrollBar* iVScroll;
+};
+
+inline ASwtScrollableBase::ASwtScrollableBase(
+    MSwtDisplay& aDisplay,
+    TSwtPeer aPeer,
+    MSwtComposite* aParent,
+    TInt aStyle)
+        : ASwtControlBase(aDisplay, aPeer, aParent, aStyle)
+{
+}
+
+inline ASwtScrollableBase::~ASwtScrollableBase()
+{
+    iHScroll = NULL;
+    iVScroll = NULL;
+}
+
+inline TEikScrollBarModel ASwtScrollableBase::DefaultSbModel(TInt aStyle)
+{
+    TInt thumbPos(CSwtLafFacade::KSwtDefaultScrollBarModelThumbposition);
+
+    if ((aStyle & KSwtStyleHScroll) && AknLayoutUtils::LayoutMirrored())
+    {
+        thumbPos = Max((CSwtLafFacade::KSwtDefaultScrollBarModelScrollSpan
+                        - CSwtLafFacade::KSwtDefaultScrollBarModelThumbposition
+                        - CSwtLafFacade::KSwtDefaultScrollBarModelThumbSpan), 0);
+    }
+
+
+    return TEikScrollBarModel(CSwtLafFacade::KSwtDefaultScrollBarModelScrollSpan,
+                              CSwtLafFacade::KSwtDefaultScrollBarModelThumbSpan,
+                              thumbPos);
+}
+
+#endif // SWTSCROLLABLEBASE_H