ChatBox.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2022 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_CHAT_BOX_HPP
#define TGUI_CHAT_BOX_HPP
 
 
#include <TGUI/CopiedSharedPtr.hpp>
#include <TGUI/Widgets/Scrollbar.hpp>
#include <TGUI/Renderers/ChatBoxRenderer.hpp>
#include <TGUI/Text.hpp>
#include <deque>
 
 
namespace tgui
{
 
    class TGUI_API ChatBox : public Widget
    {
    public:
 
        typedef std::shared_ptr<ChatBox> Ptr; 
        typedef std::shared_ptr<const ChatBox> ConstPtr; 
 
    protected:
 
        struct Line
        {
            Text text;
            String string;
        };
 
 
    public:
 
        ChatBox(const char* typeName = "ChatBox", bool initRenderer = true);
 
 
        static ChatBox::Ptr create();
 
 
        static ChatBox::Ptr copy(ChatBox::ConstPtr chatBox);
 
 
        ChatBoxRenderer* getSharedRenderer();
        const ChatBoxRenderer* getSharedRenderer() const;
 
        ChatBoxRenderer* getRenderer();
        const ChatBoxRenderer* getRenderer() const;
 
 
        void setSize(const Layout2d& size) override;
        using Widget::setSize;
 
 
        void addLine(const String& text);
 
 
        void addLine(const String& text, Color color);
 
 
        void addLine(const String& text, Color color, TextStyles style);
 
 
        String getLine(std::size_t lineIndex) const;
 
 
        Color getLineColor(std::size_t lineIndex) const;
 
 
        TextStyles getLineTextStyle(std::size_t lineIndex) const;
 
 
        bool removeLine(std::size_t lineIndex);
 
 
        void removeAllLines();
 
 
        std::size_t getLineAmount();
 
 
        void setLineLimit(std::size_t maxLines);
 
 
        std::size_t getLineLimit();
 
 
        void setTextColor(Color color);
 
 
        const Color& getTextColor() const;
 
 
        void setTextStyle(TextStyles style);
 
 
        TextStyles getTextStyle() const;
 
 
        void setLinesStartFromTop(bool startFromTop = true);
 
 
        bool getLinesStartFromTop() const;
 
 
        void setNewLinesBelowOthers(bool newLinesBelowOthers = true);
 
 
        bool getNewLinesBelowOthers() const;
 
 
        void setScrollbarValue(unsigned int value);
 
 
        unsigned int getScrollbarValue() const;
 
 
        bool isMouseOnWidget(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;
 
 
    private:
 
        // Recalculates the text attribute of the line
        void recalculateLineText(Line& line);
 
 
        // Recalculates all text attributes, recalculate the full text height and update the displayed text
        void recalculateAllLines();
 
 
        // Recalculates the space used by all the lines
        void recalculateFullTextHeight();
 
 
        // Updates the position of the lines
        void updateDisplayedText();
 
 
        // Updates the position and size of the panel and scrollbar
        void updateRendering();
 
 
    protected:
 
        void draw(BackendRenderTarget& target, RenderStates states) const override;
 
 
        void rendererChanged(const 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;
 
 
        void updateTextSize() override;
 
 
        // Returns the size without the borders
        Vector2f getInnerSize() const;
 
 
        // Makes a copy of the widget
        Widget::Ptr clone() const override;
 
 
    protected:
 
        Color m_textColor = Color::Black;
        TextStyles m_textStyle;
 
        std::size_t m_maxLines = 0;
 
        float m_fullTextHeight = 0;
 
        bool m_linesStartFromTop = false;
        bool m_newLinesBelowOthers = true;
 
        CopiedSharedPtr<ScrollbarChildWidget> m_scroll;
 
        std::deque<Line> m_lines;
 
        Sprite m_spriteBackground;
 
        // Cached renderer properties
        Borders m_bordersCached;
        Padding m_paddingCached;
        Color   m_backgroundColorCached;
        Color   m_borderColorCached;
 
    };
 
}
 
 
#endif // TGUI_TEXT_BOX_HPP