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85 lines
2.9 KiB
85 lines
2.9 KiB
5 years ago
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//=========== Copyright Valve Corporation, All rights reserved. ===============//
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//
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// Purpose:
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//=============================================================================//
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#ifndef LIST_SEGMENT_VIEW_H
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#define LIST_SEGMENT_VIEW_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "panel2d.h"
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DECLARE_PANEL_EVENT0( ListSegmentViewRetreat );
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DECLARE_PANEL_EVENT0( ListSegmentViewAdvance );
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DECLARE_PANORAMA_EVENT0( ListSegmentViewChanged );
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namespace panorama
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{
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/*
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A class that handles displaying X sequential elements from its children. Similar to a carousel, but more
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minimal -- you handle advancing/retreating yourself. Supports up to 10 visible elements.
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Things you need to do:
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- Specify "items-displayed:" in the xml, which is how many elements are shown at once.
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- Specify "step-size:" in the xml, which is how many steps it'll move when advancing or retreating. Cannot be bigger than items-displayed.
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- Define these classes, which will be added to the child elements (X is always 1 through 10):
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.ListSegmentDisplayedX, one for each of the elements you intend to display.
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.ListSegmentHiddenBeforeX, one for each hidden element that's off the "top/left" of the display. These guys are prior to the displayed window.
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.ListSegmentHiddenAfterX, one for each hidden element that's off the "bottom/right" of the display. These guys are after the displayed window.
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.ListSegmentSnap, which eliminates any transitions you're using in your element class, so that elements just go directly to their displayed/hidden states immediately.
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Then you just need to add children (in order) to it, and call AdvancePosition and RetreatPosition to move through them.
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*/
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//-----------------------------------------------------------------------------
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// Purpose: List Segment View
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//-----------------------------------------------------------------------------
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class CListSegmentView : public CPanel2D
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{
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DECLARE_PANEL2D( CListSegmentView, CPanel2D );
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public:
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CListSegmentView( CPanel2D *parent, const char * pchPanelID );
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virtual ~CListSegmentView();
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virtual bool BSetProperty( CPanoramaSymbol symName, const char *pchValue ) OVERRIDE;
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virtual void GetDebugPropertyInfo( CUtlVector< DebugPropertyOutput_t *> *pvecProperties ) OVERRIDE;
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virtual void OnStylesChanged() OVERRIDE { UpdateChildrenStyles( false ); BaseClass::OnStylesChanged(); }
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virtual void OnAfterChildrenChanged() OVERRIDE { UpdateChildrenStyles( false ); BaseClass::OnAfterChildrenChanged(); }
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virtual bool BRequiresContentClipLayer() OVERRIDE { return true; }
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bool RetreatPosition( const CPanelPtr< IUIPanel > &panelPtr );
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bool AdvancePosition( const CPanelPtr< IUIPanel > &panelPtr );
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int GetCurrentPage( void );
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int GetNumPages( void );
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bool IsAtStart( void );
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bool IsAtEnd( void );
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void ResetPosition( void );
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private:
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void UpdateChildrenStyles( bool bSnap );
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int m_nItemsDisplayed;
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int m_nStepSize;
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int m_nCurrentChildIndex;
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};
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} // namespace panorama
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#endif // LIST_SEGMENT_VIEW_H
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