NS/releases/3.05f/source/game_shared/vgui_listbox.h

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//========= Copyright <20> 1996-2001, Valve LLC, All rights reserved. ============
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================
#ifndef VOICE_LISTBOX_H
#define VOICE_LISTBOX_H
#ifdef _WIN32
#pragma once
#endif
#include "VGUI_Panel.h"
#include "VGUI_IntChangeSignal.h"
#include "VGUI_Slider2.h"
#include "VGUI_ScrollBar2.h"
namespace vgui
{
// Listbox class used by voice code. Based off of vgui's list panel but with some modifications:
// - This listbox clips its child items to its rectangle.
// - You can access things like the scrollbar and find out the item width.
// - The scrollbar scrolls one element at a time and the range is correct.
// Note: this listbox does not provide notification when items are
class CListBox : public Panel
{
public:
CListBox();
~CListBox();
void Init();
void Term();
// Add an item to the listbox. This automatically sets the item's parent to the listbox
// and resizes the item's width to fit within the listbox.
void AddItem(Panel *pPanel);
// Get the number of items currently in the listbox.
int GetNumItems();
// Get the width that listbox items will be set to (this changes if you resize the listbox).
int GetItemWidth();
// Get/set the scrollbar position (position says which element is at the top of the listbox).
int GetScrollPos();
void SetScrollPos(int pos);
// sets the last item the listbox should scroll to
// scroll to GetNumItems() if not set
void SetScrollRange(int maxScroll);
// returns the maximum value the scrollbar can scroll to
int GetScrollMax();
// vgui overrides.
public:
virtual void setPos(int x, int y);
virtual void setSize(int wide,int tall);
virtual void setPixelScroll(int value);
virtual void paintBackground();
protected:
class LBItem
{
public:
Panel *m_pPanel;
LBItem *m_pPrev, *m_pNext;
};
class ListBoxSignal : public IntChangeSignal
{
public:
void intChanged(int value,Panel* panel)
{
m_pListBox->setPixelScroll(-value);
}
vgui::CListBox *m_pListBox;
};
protected:
void InternalLayout();
protected:
// All the items..
LBItem m_Items;
Panel m_ItemsPanel;
int m_ItemOffset; // where we're scrolled to
Slider2 m_Slider;
ScrollBar2 m_ScrollBar;
ListBoxSignal m_Signal;
int m_iScrollMax;
};
}
#endif // VOICE_LISTBOX_H