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93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/*
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* ListView.h
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*
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* Created on: 11 mar 2019
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* Author: robert
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*/
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#ifndef MIDDLEWARES_GUI_WIDGETS_LISTVIEW_HPP_
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#define MIDDLEWARES_GUI_WIDGETS_LISTVIEW_HPP_
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#include <list>
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#include "Rect.hpp"
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#include "KeyEvent.hpp"
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#include "ListItemProvider.hpp"
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namespace gui {
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class ListItemProvider;
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class ListView: public Rect {
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protected:
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//id of the first element visible on the list (location depends on orientation)
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int firstIndex;
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//index of last visible item
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int lastIndex;
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//defines total number of elements in the list
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int elementsCount;
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//defines whether separator should be placed between elements
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bool drawSeparators;
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//defines whether scroll bar should be drawn on the right side of list widget
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bool drawVerticalScroll;
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//defines whether first element is on bottom of widget ( BOTTOM_UP ) or on top of widget ( TOP_BOTTOM )
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int orientation;
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//maximum number of elements that can be displayed on the screen
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int maxElements;
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//index of the currently selected element
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int selectedIndex;
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//vector that holds currently visible list of items
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std::vector<ListItem*> items;
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//pointer to the item provider object
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ListItemProvider* provider = nullptr;
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//rounded rectangle used to draw scroll bar
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Rect* scroll;
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//space available for new items - this will change after any new item retrieved from provider
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int listMode;
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int pageSize;
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void updatePageItems();
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void updateContinousItems();
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void clearItems();
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void updateScrollDimenstions();
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public:
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static const int ORIENTATION_TOP_DOWN = 0x01;
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static const int ORIENTATION_BOTTOM_UP = 0x02;
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//list items has same height, incrementing beyond last or first item will cause all items to be changed
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static const int MODE_PAGE = 0x04;
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//following item will be displayed as long there is available space. Height of the items must be provided by the items.
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static const int MODE_CONTINUOUS = 0x08;
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ListView();
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ListView( Item* parent, uint32_t x, uint32_t y, uint32_t w, uint32_t h );
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virtual ~ListView();
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//virtual methods for list view
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virtual void setElementsCount( int count );
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virtual void setDrawSeparators( bool value );
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virtual void setOrientation( int orientation );
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virtual void drawScroll( bool value );
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virtual void setMaxElements( int value );
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virtual void setProvider( ListItemProvider* provider );
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virtual void setMode( int mode );
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virtual void setPageSize( int size );
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virtual ListItem* getSelectedItem();
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/*
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* Acquire and/or update items using item provider
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*/
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virtual void updateItems();
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/**
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* removes all data stored in the list and resets size and position to 0
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*/
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virtual void clear();
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//virtual methods from Item
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std::list<DrawCommand*> buildDrawList() override;
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bool onInput( const InputEvent& inputEvent ) override;
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bool onActivated( void* data ) override ;
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bool onDimensionChanged( const BoundingBox& oldDim, const BoundingBox& newDim) override;
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};
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} /* namespace gui */
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#endif /* MIDDLEWARES_GUI_WIDGETS_LISTVIEW_HPP_ */
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