128 lines
4.0 KiB
C++
128 lines
4.0 KiB
C++
#pragma once
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#include "UINode.hpp"
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class Font;
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struct FontStylesScheme;
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namespace gui {
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struct LineScheme {
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size_t offset;
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bool fake;
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};
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struct LabelCache {
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Font* font = nullptr;
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std::vector<LineScheme> lines;
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/// @brief Reset cache flag
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bool resetFlag = true;
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size_t wrapWidth = -1;
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void prepare(Font* font, size_t wrapWidth);
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void update(const std::wstring& text, bool multiline, bool wrap);
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size_t getTextLineOffset(size_t line) const;
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uint getLineByTextIndex(size_t index) const;
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};
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class Label : public UINode {
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LabelCache cache;
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glm::vec2 calcSize();
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protected:
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std::wstring text;
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std::string fontName;
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wstringsupplier supplier = nullptr;
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/// @brief Lines interval multiplier
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float lineInterval = 1.5f;
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/// @brief Vertical alignment (only when multiline is set to false)
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Align valign = Align::center;
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/// @brief Line separators and wrapping will be ignored if set to false
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bool multiline = false;
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/// @brief Text wrapping (works only if multiline is enabled)
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bool textWrap = true;
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/// @brief Text Y offset relative to label position
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/// (last calculated alignment)
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int textYOffset = 0;
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/// @brief Text line height multiplied by line interval
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int totalLineHeight = 1;
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/// @brief Auto resize label to fit text
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bool autoresize = false;
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/// @brief Text markup language
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std::string markup;
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std::unique_ptr<FontStylesScheme> styles;
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public:
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Label(const std::string& text, std::string fontName="normal");
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Label(const std::wstring& text, std::string fontName="normal");
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virtual ~Label();
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virtual void setText(std::wstring text);
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const std::wstring& getText() const;
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virtual void setFontName(std::string name);
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virtual const std::string& getFontName() const;
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/// @brief Set text vertical alignment (default value: center)
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/// @param align Align::top / Align::center / Align::bottom
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virtual void setVerticalAlign(Align align);
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virtual Align getVerticalAlign() const;
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/// @brief Get line height multiplier used for multiline labels
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/// (default value: 1.5)
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virtual float getLineInterval() const;
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/// @brief Set line height multiplier used for multiline labels
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virtual void setLineInterval(float interval);
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/// @brief Get Y position of the text relative to label position
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/// @return Y offset
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virtual int getTextYOffset() const;
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/// @brief Get Y position of the line relative to label position
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/// @param line target line index
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/// @return Y offset
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virtual int getLineYOffset(uint line) const;
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/// @brief Get position of line start in the text
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/// @param line target line index
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/// @return position in the text [0..length]
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virtual size_t getTextLineOffset(size_t line) const;
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/// @brief Get line index by its Y offset relative to label position
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/// @param offset target Y offset
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/// @return line index [0..+]
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virtual uint getLineByYOffset(int offset) const;
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virtual uint getLineByTextIndex(size_t index) const;
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virtual uint getLinesNumber() const;
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virtual bool isFakeLine(size_t line) const;
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virtual void draw(const DrawContext& pctx, const Assets& assets) override;
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virtual void textSupplier(wstringsupplier supplier);
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virtual void setAutoResize(bool flag);
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virtual bool isAutoResize() const;
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virtual void setMultiline(bool multiline);
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virtual bool isMultiline() const;
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virtual void setTextWrapping(bool flag);
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virtual bool isTextWrapping() const;
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virtual void setMarkup(std::string_view lang);
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virtual const std::string& getMarkup() const;
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virtual void setStyles(std::unique_ptr<FontStylesScheme> styles);
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};
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}
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