ListBox.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2020 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
 
#ifndef TGUI_LIST_BOX_HPP
#define TGUI_LIST_BOX_HPP
 
 
#include <TGUI/CopiedSharedPtr.hpp>
#include <TGUI/Widgets/Scrollbar.hpp>
#include <TGUI/Renderers/ListBoxRenderer.hpp>
#include <TGUI/Text.hpp>
 
 
namespace tgui
{
 class TGUI_API ListBox : public Widget
 {
 public:
 
 typedef std::shared_ptr<ListBox> Ptr; 
 typedef std::shared_ptr<const ListBox> ConstPtr; 
 
 
 // Default constructor
 ListBox();
 
 
 static ListBox::Ptr create();
 
 
 static ListBox::Ptr copy(ListBox::ConstPtr listBox);
 
 
 ListBoxRenderer* getSharedRenderer();
 const ListBoxRenderer* getSharedRenderer() const;
 
 ListBoxRenderer* getRenderer();
 const ListBoxRenderer* getRenderer() const;
 
 
 void setPosition(const Layout2d& position) override;
 using Widget::setPosition;
 
 
 void setSize(const Layout2d& size) override;
 using Widget::setSize;
 
 
 bool addItem(const sf::String& itemName, const sf::String& id = "");
 
 
 bool setSelectedItem(const sf::String& itemName);
 
 
 bool setSelectedItemById(const sf::String& id);
 
 
 bool setSelectedItemByIndex(std::size_t index);
 
 
 void deselectItem();
 
 
 bool removeItem(const sf::String& itemName);
 
 
 bool removeItemById(const sf::String& id);
 
 
 bool removeItemByIndex(std::size_t index);
 
 
 void removeAllItems();
 
 
 sf::String getItemById(const sf::String& id) const;
 
 
 sf::String getItemByIndex(std::size_t index) const;
 
 
 int getIndexById(const sf::String& id) const;
 
 
 sf::String getIdByIndex(std::size_t index) const;
 
 
 sf::String getSelectedItem() const;
 
 
 sf::String getSelectedItemId() const;
 
 
 int getSelectedItemIndex() const;
 
 
 bool changeItem(const sf::String& originalValue, const sf::String& newValue);
 
 
 bool changeItemById(const sf::String& id, const sf::String& newValue);
 
 
 bool changeItemByIndex(std::size_t index, const sf::String& newValue);
 
 
 std::size_t getItemCount() const;
 
 
 std::vector<sf::String> getItems() const;
 
 
 const std::vector<sf::String>& getItemIds() const;
 
 
 void setItemHeight(unsigned int itemHeight);
 
 
 unsigned int getItemHeight() const;
 
 
 void setTextSize(unsigned int textSize) override;
 
 
 void setMaximumItems(std::size_t maximumItems = 0);
 
 
 std::size_t getMaximumItems() const;
 
 
 void setAutoScroll(bool autoScroll);
 
 
 bool getAutoScroll() const;
 
 
 bool contains(const sf::String& item) const;
 
 
 bool containsId(const sf::String& id) const;
 
 
 void setScrollbarValue(unsigned int value);
 
 
 unsigned int getScrollbarValue() const;
 
 
 bool mouseOnWidget(Vector2f pos) const override;
 
 void leftMousePressed(Vector2f pos) override;
 
 void leftMouseReleased(Vector2f pos) override;
 
 void mouseMoved(Vector2f pos) override;
 
 bool mouseWheelScrolled(float delta, Vector2f pos) override;
 
 void mouseNoLongerOnWidget() override;
 
 void leftMouseButtonNoLongerDown() override;
 
 
 void draw(sf::RenderTarget& target, sf::RenderStates states) const override;
 
 
 protected:
 
 Signal& getSignal(std::string signalName) override;
 
 
 void rendererChanged(const std::string& property) override;
 
 
 std::unique_ptr<DataIO::Node> save(SavingRenderersMap& renderers) const override;
 
 
 void load(const std::unique_ptr<DataIO::Node>& node, const LoadingRenderersMap& renderers) override;
 
 
 // Returns the size without the borders
 Vector2f getInnerSize() const;
 
 
 // Update the colors and text style of the selected and hovered items
 void updateSelectedAndHoveringItemColorsAndStyle();
 
 
 // Update the color and text style of all the items
 void updateItemColorsAndStyle();
 
 
 // Update on which item the mouse is standing
 void updateHoveringItem(int item);
 
 
 // Update which item is selected
 void updateSelectedItem(int item);
 
 
 // This function is called every frame with the time passed since the last frame.
 bool update(sf::Time elapsedTime) override;
 
 
 // Makes a copy of the widget
 Widget::Ptr clone() const override
 {
 return std::make_shared<ListBox>(*this);
 }
 
 
 public:
 
 SignalItem onItemSelect = {"ItemSelected"}; 
 SignalItem onMousePress = {"MousePressed"}; 
 SignalItem onMouseRelease = {"MouseReleased"}; 
 SignalItem onDoubleClick = {"DoubleClicked"}; 
 
 
 protected:
 
 // This contains the different items in the list box
 std::vector<Text> m_items;
 std::vector<sf::String> m_itemIds;
 
 // What is the index of the selected item?
 // This is also used by combo box, so it can't just be changed to a pointer!
 int m_selectedItem = -1;
 
 int m_hoveringItem = -1;
 
 // The size must be stored
 unsigned int m_itemHeight = 0;
 unsigned int m_requestedTextSize = 0;
 
 // This will store the maximum number of items in the list box (zero by default, meaning that there is no limit)
 std::size_t m_maxItems = 0;
 
 // When there are too many items a scrollbar will be shown
 CopiedSharedPtr<ScrollbarChildWidget> m_scroll;
 
 // Will be set to true after the first click, but gets reset to false when the second click does not occur soon after
 bool m_possibleDoubleClick = false;
 
 bool m_autoScroll = true;
 
 Sprite m_spriteBackground;
 
 // Cached renderer properties
 Borders m_bordersCached;
 Borders m_paddingCached;
 Color m_borderColorCached;
 Color m_backgroundColorCached;
 Color m_backgroundColorHoverCached;
 Color m_selectedBackgroundColorCached;
 Color m_selectedBackgroundColorHoverCached;
 Color m_textColorCached;
 Color m_textColorHoverCached;
 Color m_selectedTextColorCached;
 Color m_selectedTextColorHoverCached;
 TextStyle m_textStyleCached;
 TextStyle m_selectedTextStyleCached;
 
 };
 
}
 
 
#endif // TGUI_LIST_BOX_HPP