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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef __C_GUI_LIST_BOX_H_INCLUDED__
#define __C_GUI_LIST_BOX_H_INCLUDED__
#include "IGUIListBox.h"
#include "irrArray.h"
namespace irr
{
namespace gui
{
class IGUIFont;
class IGUIScrollBar;
class CGUIListBox : public IGUIListBox
{
public:
//! constructor
CGUIListBox(IGUIEnvironment* environment, IGUIElement* parent,
s32 id, core::rect<s32> rectangle, bool clip=true,
bool drawBack=false, bool moveOverSelect=false);
//! destructor
virtual ~CGUIListBox();
//! returns amount of list items
u32 getItemCount() const override;
//! returns string of a list item. the id may be a value from 0 to itemCount-1
const wchar_t* getListItem(u32 id) const override;
//! adds an list item, returns id of item
u32 addItem(const wchar_t* text) override;
//! clears the list
void clear() override;
//! returns id of selected item. returns -1 if no item is selected.
s32 getSelected() const override;
//! sets the selected item. Set this to -1 if no item should be selected
void setSelected(s32 id) override;
//! sets the selected item. Set this to -1 if no item should be selected
void setSelected(const wchar_t *item) override;
//! called if an event happened.
bool OnEvent(const SEvent& event) override;
//! draws the element and its children
void draw() override;
//! adds an list item with an icon
//! \param text Text of list entry
//! \param icon Sprite index of the Icon within the current sprite bank. Set it to -1 if you want no icon
//! \return
//! returns the id of the new created item
u32 addItem(const wchar_t* text, s32 icon) override;
//! Returns the icon of an item
s32 getIcon(u32 id) const override;
//! removes an item from the list
void removeItem(u32 id) override;
//! get the the id of the item at the given absolute coordinates
s32 getItemAt(s32 xpos, s32 ypos) const override;
//! Sets the sprite bank which should be used to draw list icons. This font is set to the sprite bank of
//! the built-in-font by default. A sprite can be displayed in front of every list item.
//! An icon is an index within the icon sprite bank. Several default icons are available in the
//! skin through getIcon
void setSpriteBank(IGUISpriteBank* bank) override;
//! set whether the listbox should scroll to newly selected items
void setAutoScrollEnabled(bool scroll) override;
//! returns true if automatic scrolling is enabled, false if not.
bool isAutoScrollEnabled() const override;
//! Update the position and size of the listbox, and update the scrollbar
void updateAbsolutePosition() override;
//! set all item colors at given index to color
void setItemOverrideColor(u32 index, video::SColor color) override;
//! set all item colors of specified type at given index to color
void setItemOverrideColor(u32 index, EGUI_LISTBOX_COLOR colorType, video::SColor color) override;
//! clear all item colors at index
void clearItemOverrideColor(u32 index) override;
//! clear item color at index for given colortype
void clearItemOverrideColor(u32 index, EGUI_LISTBOX_COLOR colorType) override;
//! has the item at index its color overwritten?
bool hasItemOverrideColor(u32 index, EGUI_LISTBOX_COLOR colorType) const override;
//! return the overwrite color at given item index.
video::SColor getItemOverrideColor(u32 index, EGUI_LISTBOX_COLOR colorType) const override;
//! return the default color which is used for the given colorType
video::SColor getItemDefaultColor(EGUI_LISTBOX_COLOR colorType) const override;
//! set the item at the given index
void setItem(u32 index, const wchar_t* text, s32 icon) override;
//! Insert the item at the given index
//! Return the index on success or -1 on failure.
s32 insertItem(u32 index, const wchar_t* text, s32 icon) override;
//! Swap the items at the given indices
void swapItems(u32 index1, u32 index2) override;
//! set global itemHeight
void setItemHeight( s32 height ) override;
//! Sets whether to draw the background
void setDrawBackground(bool draw) override;
//! Access the vertical scrollbar
IGUIScrollBar* getVerticalScrollBar() const override;
private:
struct ListItem
{
core::stringw Text;
s32 Icon = -1;
// A multicolor extension
struct ListItemOverrideColor
{
bool Use = false;
video::SColor Color;
};
ListItemOverrideColor OverrideColors[EGUI_LBC_COUNT]{};
};
void recalculateItemHeight();
void selectNew(s32 ypos, bool onlyHover=false);
void recalculateScrollPos();
void updateScrollBarSize(s32 size);
// extracted that function to avoid copy&paste code
void recalculateItemWidth(s32 icon);
// get labels used for serialization
bool getSerializationLabels(EGUI_LISTBOX_COLOR colorType, core::stringc & useColorLabel, core::stringc & colorLabel) const;
core::array< ListItem > Items;
s32 Selected;
s32 ItemHeight;
s32 ItemHeightOverride;
s32 TotalItemHeight;
s32 ItemsIconWidth;
gui::IGUIFont* Font;
gui::IGUISpriteBank* IconBank;
gui::IGUIScrollBar* ScrollBar;
u32 selectTime;
u32 LastKeyTime;
core::stringw KeyBuffer;
bool Selecting;
bool DrawBack;
bool MoveOverSelect;
bool AutoScroll;
bool HighlightWhenNotFocused;
};
} // end namespace gui
} // end namespace irr
#endif
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