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//-----------------------------------------------------------------------------
// VST Plug-Ins SDK
// VSTGUI: Graphical User Interface Framework for VST plugins :
//
// CScrollView written 2004 by Arne Scheffler
//
//-----------------------------------------------------------------------------
// VSTGUI LICENSE
// � 2003, Steinberg Media Technologies, All Rights Reserved
//-----------------------------------------------------------------------------
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Steinberg Media Technologies nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
// OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
//-----------------------------------------------------------------------------
#ifndef __cscrollview__
#define __cscrollview__
#ifndef __vstgui__
#include "vstgui.h"
#endif
BEGIN_NAMESPACE_VSTGUI
class CScrollbar;
class CScrollContainer;
//-----------------------------------------------------------------------------
class CScrollView : public CViewContainer, CControlListener
//! a scrollable view
//-----------------------------------------------------------------------------
{
public:
CScrollView (const CRect &size, const CRect &containerSize, CFrame* pParent, long style, long scrollbarWidth = 16, CBitmap* pBackground = 0);
virtual ~CScrollView ();
// style
enum {
kHorizontalScrollbar = 1 << 1, ///< add a horizontal scrollbar
kVerticalScrollbar = 1 << 2 ///< add a vertical scrollbar
};
virtual void setContainerSize (const CRect& cs); ///< set the virtual size of this container
virtual void addView (CView *pView);
virtual void drawBackgroundRect (CDrawContext *pContext, CRect& _updateRect);
virtual bool onWheel (CDrawContext *pContext, const CPoint &where, const CMouseWheelAxis axis, float distance);
virtual void valueChanged (CDrawContext *pContext, CControl *pControl);
virtual CScrollbar* getVerticalScrollbar () const { return vsb; }
virtual CScrollbar* getHorizontalScrollbar () const { return hsb; }
CLASS_METHODS(CScrollView, CViewContainer)
//-----------------------------------------------------------------------------
protected:
CScrollContainer* sc;
CScrollbar* vsb;
CScrollbar* hsb;
CRect containerSize;
long style;
private:
enum {
kHSBTag,
kVSBTag,
};
};
//-----------------------------------------------------------------------------
class CScrollContainer : public CViewContainer
//-----------------------------------------------------------------------------
{
public:
CScrollContainer (const CRect &size, const CRect &containerSize, CFrame *pParent, CBitmap *pBackground = 0);
virtual ~CScrollContainer ();
void setScrollOffset (CPoint offset, bool withRedraw = false);
void getScrollOffset (CPoint& off) const { off = offset; }
CRect getContainerSize () const { return containerSize; }
void setContainerSize (const CRect& cs);
virtual void redrawRect (CDrawContext* context, const CRect& rect);
virtual bool isDirty () const;
CLASS_METHODS(CScrollContainer, CViewContainer)
//-----------------------------------------------------------------------------
protected:
CRect containerSize;
CPoint offset;
};
//-----------------------------------------------------------------------------
class IScrollbarDrawer
//-----------------------------------------------------------------------------
{
public:
virtual void drawScrollbarBackground (CDrawContext* pContext, const CRect& size, long style, CScrollbar* bar) = 0;
virtual void drawScrollbarScroller (CDrawContext* pContext, const CRect& size, long style, CScrollbar* bar) = 0;
};
//-----------------------------------------------------------------------------
class CScrollbar : public CControl
//! a scrollbar control
//-----------------------------------------------------------------------------
{
public:
CScrollbar (const CRect& size, CControlListener* listener, long tag, long style, const CRect& scrollSize);
virtual ~CScrollbar ();
enum {
kHorizontal,
kVertical,
};
virtual void setDrawer (IScrollbarDrawer* d) { drawer = d; }
virtual void setScrollSize (const CRect& ssize);
virtual void setStep (float newStep) { stepValue = newStep; }
CRect& getScrollSize (CRect& rect) const { rect = scrollSize; return rect; }
float getStep () const { return stepValue; }
virtual void setFrameColor (const CColor& color) { frameColor = color; }
virtual void setScrollerColor (const CColor& color) { scrollerColor = color; }
virtual void setBackgroundColor (const CColor& color) { backgroundColor = color; }
CColor getFrameColor () const { return frameColor; }
CColor getScrollerColor () const { return scrollerColor; }
CColor getBackgroundColor () const { return backgroundColor; }
virtual void draw (CDrawContext* pContext);
virtual void mouse (CDrawContext* pContext, CPoint& where, long buttons = -1);
virtual bool onWheel (CDrawContext *pContext, const CPoint &where, float distance);
CLASS_METHODS(CScrollbar, CControl)
//-----------------------------------------------------------------------------
protected:
void drawBackground (CDrawContext* pContext);
void drawScroller (CDrawContext* pContext, const CRect& size);
void calculateScrollerLength ();
CRect getScrollerRect ();
long style;
CRect scrollSize;
CRect scrollerArea;
float stepValue;
CCoord scrollerLength;
CColor frameColor;
CColor scrollerColor;
CColor backgroundColor;
IScrollbarDrawer* drawer;
};
END_NAMESPACE_VSTGUI
#endif
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