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/*
* IFont.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
VCMI_LIB_NAMESPACE_BEGIN
class Point;
class ColorRGBA;
VCMI_LIB_NAMESPACE_END
struct SDL_Surface;
class IFont : boost::noncopyable
{
protected:
int getScalingFactor() const;
public:
virtual ~IFont()
{}
/// Returns height of font
virtual size_t getLineHeightScaled() const = 0;
/// Returns width, in pixels of a character glyph. Pointer must contain at least characterSize valid bytes
virtual size_t getGlyphWidthScaled(const char * data) const = 0;
/// Return width of the string
virtual size_t getStringWidthScaled(const std::string & data) const;
/// Returns distance from top of the font glyphs to baseline
virtual size_t getFontAscentScaled() const = 0;
/// Returns height of font
size_t getLineHeight() const;
/// Returns width, in pixels of a character glyph. Pointer must contain at least characterSize valid bytes
size_t getGlyphWidth(const char * data) const;
/// Return width of the string
size_t getStringWidth(const std::string & data) const;
/// Returns distance from top of the font glyphs to baseline
size_t getFontAscent() const;
/// Internal function to render font, see renderTextLeft
virtual void renderText(SDL_Surface * surface, const std::string & data, const ColorRGBA & color, const Point & pos) const = 0;
virtual bool canRepresentCharacter(const char * data) const = 0;
/**
* @param surface - destination to print text on
* @param data - string to print
* @param color - font color
* @param pos - position of rendered font
*/
/// pos = topleft corner of the text
void renderTextLeft(SDL_Surface * surface, const std::string & data, const ColorRGBA & color, const Point & pos) const;
/// pos = center of the text
void renderTextRight(SDL_Surface * surface, const std::string & data, const ColorRGBA & color, const Point & pos) const;
/// pos = bottomright corner of the text
void renderTextCenter(SDL_Surface * surface, const std::string & data, const ColorRGBA & color, const Point & pos) const;
/// pos = topleft corner of the text
void renderTextLinesLeft(SDL_Surface * surface, const std::vector<std::string> & data, const ColorRGBA & color, const Point & pos) const;
/// pos = center of the text
void renderTextLinesRight(SDL_Surface * surface, const std::vector<std::string> & data, const ColorRGBA & color, const Point & pos) const;
/// pos = bottomright corner of the text
void renderTextLinesCenter(SDL_Surface * surface, const std::vector<std::string> & data, const ColorRGBA & color, const Point & pos) const;
};
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