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249 lines
7.7 KiB
C++
249 lines
7.7 KiB
C++
/*
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* TextControls.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/Colors.h"
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#include "../render/EFont.h"
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#include "../../lib/FunctionList.h"
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#include "../../lib/filesystem/ResourcePath.h"
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class IImage;
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class CSlider;
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/// Base class for all text-related widgets.
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/// Controls text blitting-related options
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class CTextContainer : public virtual CIntObject
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{
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protected:
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/// returns size of border, for left- or right-aligned text
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virtual Point getBorderSize() = 0;
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/// do actual blitting of line. Text "what" will be placed at "where" and aligned according to alignment
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void blitLine(Canvas & to, Rect where, std::string what);
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CTextContainer(ETextAlignment alignment, EFonts font, ColorRGBA color);
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public:
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ETextAlignment alignment;
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EFonts font;
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ColorRGBA color; // default font color. Can be overridden by placing "{}" into the string
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};
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/// Label which shows text
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class CLabel : public CTextContainer
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{
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protected:
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Point getBorderSize() override;
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virtual std::string visibleText();
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std::shared_ptr<CIntObject> background;
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std::string text;
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bool autoRedraw; //whether control will redraw itself on setTxt
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public:
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std::string getText();
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virtual void setAutoRedraw(bool option);
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virtual void setText(const std::string & Txt);
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virtual void setColor(const ColorRGBA & Color);
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size_t getWidth();
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CLabel(int x = 0, int y = 0, EFonts Font = FONT_SMALL, ETextAlignment Align = ETextAlignment::TOPLEFT,
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const ColorRGBA & Color = Colors::WHITE, const std::string & Text = "");
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void showAll(Canvas & to) override; //shows statusbar (with current text)
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};
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/// Small helper class to manage group of similar labels
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class CLabelGroup : public CIntObject
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{
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std::vector<std::shared_ptr<CLabel>> labels;
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EFonts font;
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ETextAlignment align;
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ColorRGBA color;
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public:
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CLabelGroup(EFonts Font = FONT_SMALL, ETextAlignment Align = ETextAlignment::TOPLEFT, const ColorRGBA & Color = Colors::WHITE);
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void add(int x = 0, int y = 0, const std::string & text = "");
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size_t currentSize() const;
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};
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/// Multi-line label that can display multiple lines of text
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/// If text is too big to fit into requested area remaining part will not be visible
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class CMultiLineLabel : public CLabel
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{
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// text to blit, split into lines that are no longer than widget width
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std::vector<std::string> lines;
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// area of text that actually will be printed, default is widget size
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Rect visibleSize;
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void splitText(const std::string & Txt, bool redrawAfter);
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Rect getTextLocation();
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public:
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// total size of text, x = longest line of text, y = total height of lines
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Point textSize;
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CMultiLineLabel(Rect position, EFonts Font = FONT_SMALL, ETextAlignment Align = ETextAlignment::TOPLEFT, const ColorRGBA & Color = Colors::WHITE, const std::string & Text = "");
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void setText(const std::string & Txt) override;
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void showAll(Canvas & to) override;
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void setVisibleSize(Rect visibleSize, bool redrawElement = true);
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// scrolls text visible in widget. Positive value will move text up
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void scrollTextTo(int distance, bool redrawAfterScroll = true);
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void scrollTextBy(int distance);
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};
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/// a multi-line label that tries to fit text with given available width and height;
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/// if not possible, it creates a slider for scrolling text
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class CTextBox : public CIntObject
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{
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int sliderStyle;
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public:
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std::shared_ptr<CMultiLineLabel> label;
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std::shared_ptr<CSlider> slider;
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CTextBox(std::string Text, const Rect & rect, int SliderStyle, EFonts Font = FONT_SMALL, ETextAlignment Align = ETextAlignment::TOPLEFT, const ColorRGBA & Color = Colors::WHITE);
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void resize(Point newSize);
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void setText(const std::string & Txt);
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void sliderMoved(int to);
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};
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/// Status bar which is shown at the bottom of the in-game screens
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class CGStatusBar : public CLabel, public std::enable_shared_from_this<CGStatusBar>, public IStatusBar
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{
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std::string hoverText;
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std::string consoleText;
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bool enteringText;
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CGStatusBar(std::shared_ptr<CIntObject> background_, EFonts Font = FONT_SMALL, ETextAlignment Align = ETextAlignment::CENTER, const ColorRGBA & Color = Colors::WHITE);
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CGStatusBar(int x, int y, const ImagePath & name, int maxw = -1);
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CGStatusBar(int x, int y);
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//make CLabel API private
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using CLabel::getText;
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using CLabel::setAutoRedraw;
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using CLabel::setText;
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using CLabel::setColor;
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using CLabel::getWidth;
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protected:
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Point getBorderSize() override;
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void clickPressed(const Point & cursorPosition) override;
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public:
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~CGStatusBar();
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template<typename ...Args>
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static std::shared_ptr<CGStatusBar> create(Args... args)
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{
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std::shared_ptr<CGStatusBar> ret{new CGStatusBar{args...}};
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return ret;
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}
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void show(Canvas & to) override;
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void activate() override;
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void deactivate() override;
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// IStatusBar interface
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void write(const std::string & Text) override;
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void clearIfMatching(const std::string & Text) override;
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void clear() override;
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void setEnteringMode(bool on) override;
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void setEnteredText(const std::string & text) override;
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};
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class CFocusable;
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class IFocusListener
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{
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public:
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virtual void focusGot() {};
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virtual void focusLost() {};
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virtual ~IFocusListener() = default;
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};
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/// UIElement which can get input focus
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class CFocusable : public virtual CIntObject
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{
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private:
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std::shared_ptr<IFocusListener> focusListener;
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public:
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bool focus; //only one focusable control can have focus at one moment
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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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static std::list<CFocusable *> focusables; //all existing objs
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static CFocusable * inputWithFocus; //who has focus now
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CFocusable();
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CFocusable(std::shared_ptr<IFocusListener> focusListener);
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~CFocusable();
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};
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class CTextInput;
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class CKeyboardFocusListener : public IFocusListener
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{
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private:
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static std::atomic<int> usageIndex;
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CTextInput * textInput;
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public:
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CKeyboardFocusListener(CTextInput * textInput);
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void focusGot() override;
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void focusLost() override;
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};
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/// Text input box where players can enter text
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class CTextInput : public CLabel, public CFocusable
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{
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std::string newText;
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std::string helpBox; //for right-click help
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protected:
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std::string visibleText() override;
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public:
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CFunctionList<void(const std::string &)> cb;
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CFunctionList<void(std::string &, const std::string &)> filters;
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void setText(const std::string & nText) override;
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void setText(const std::string & nText, bool callCb);
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void setHelpText(const std::string &);
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CTextInput(const Rect & Pos, EFonts font, const CFunctionList<void(const std::string &)> & CB, bool giveFocusToInput = true);
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CTextInput(const Rect & Pos, const Point & bgOffset, const ImagePath & bgName, const CFunctionList<void(const std::string &)> & CB);
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CTextInput(const Rect & Pos, std::shared_ptr<IImage> srf);
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void clickPressed(const Point & cursorPosition) override;
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void keyPressed(EShortcut key) override;
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void showPopupWindow(const Point & cursorPosition) override;
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//bool captureThisKey(EShortcut key) override;
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void textInputed(const std::string & enteredText) override;
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void textEdited(const std::string & enteredText) override;
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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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friend class CKeyboardFocusListener;
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};
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