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106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/*
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* CTextInput.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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#include "../gui/CIntObject.h"
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#include "../gui/TextAlignment.h"
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#include "../render/EFont.h"
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#include "../../lib/filesystem/ResourcePath.h"
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class CLabel;
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class IImage;
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/// UIElement which can get input focus
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class CFocusable : public CIntObject
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{
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friend void removeFocusFromActiveInput();
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static std::atomic<int> usageIndex;
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static std::list<CFocusable *> focusables; //all existing objs
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static CFocusable * inputWithFocus; //who has focus now
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void focusGot();
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void focusLost();
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virtual void onFocusGot() = 0;
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virtual void onFocusLost() = 0;
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public:
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void giveFocus(); //captures focus
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void moveFocus(); //moves focus to next active control (may be used for tab switching)
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void removeFocus(); //remove focus
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bool hasFocus() const;
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CFocusable();
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~CFocusable();
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};
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/// Text input box where players can enter text
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class CTextInput final : public CFocusable
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{
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using TextEditedCallback = std::function<void(const std::string &)>;
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using TextFilterCallback = std::function<void(std::string &, const std::string &)>;
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std::string currentText;
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std::string composedText;
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ETextAlignment originalAlignment;
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std::shared_ptr<CPicture> background;
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std::shared_ptr<CLabel> label;
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TextEditedCallback onTextEdited;
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TextFilterCallback onTextFiltering;
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//Filter that will block all characters not allowed in filenames
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static void filenameFilter(std::string & text, const std::string & oldText);
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//Filter that will allow only input of numbers in range min-max (min-max are allowed)
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//min-max should be set via something like std::bind
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static void numberFilter(std::string & text, const std::string & oldText, int minValue, int maxValue);
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std::string getVisibleText() const;
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void createLabel(bool giveFocusToInput);
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void updateLabel();
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void clickPressed(const Point & cursorPosition) final;
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void textInputted(const std::string & enteredText) final;
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void textEdited(const std::string & enteredText) final;
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void onFocusGot() final;
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void onFocusLost() final;
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CTextInput(const Rect & Pos);
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public:
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CTextInput(const Rect & Pos, EFonts font, ETextAlignment alignment, bool giveFocusToInput);
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CTextInput(const Rect & Pos, const Point & bgOffset, const ImagePath & bgName);
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CTextInput(const Rect & Pos, std::shared_ptr<IImage> srf);
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/// Returns currently entered text. May not match visible text
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const std::string & getText() const;
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void setText(const std::string & nText);
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/// Set callback that will be called whenever player enters new text
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void setCallback(const TextEditedCallback & cb);
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/// Enables filtering entered text that ensures that text is valid filename (existing or not)
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void setFilterFilename();
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/// Enable filtering entered text that ensures that text is valid number in provided range [min, max]
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void setFilterNumber(int minValue, int maxValue);
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void setFont(EFonts Font);
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void setColor(const ColorRGBA & Color);
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void setAlignment(ETextAlignment alignment);
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// CIntObject interface impl
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void keyPressed(EShortcut key) final;
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void activate() final;
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void deactivate() final;
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};
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