McRogueFace/deps_windows/SFML-2.5.1/include/SFML/Graphics/Text.hpp

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C++

////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2018 Laurent Gomila (laurent@sfml-dev.org)
//
// 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 SFML_TEXT_HPP
#define SFML_TEXT_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics/Export.hpp>
#include <SFML/Graphics/Drawable.hpp>
#include <SFML/Graphics/Transformable.hpp>
#include <SFML/Graphics/Font.hpp>
#include <SFML/Graphics/Rect.hpp>
#include <SFML/Graphics/VertexArray.hpp>
#include <SFML/System/String.hpp>
#include <string>
#include <vector>
namespace sf
{
////////////////////////////////////////////////////////////
/// \brief Graphical text that can be drawn to a render target
///
////////////////////////////////////////////////////////////
class SFML_GRAPHICS_API Text : public Drawable, public Transformable
{
public:
////////////////////////////////////////////////////////////
/// \brief Enumeration of the string drawing styles
///
////////////////////////////////////////////////////////////
enum Style
{
Regular = 0, ///< Regular characters, no style
Bold = 1 << 0, ///< Bold characters
Italic = 1 << 1, ///< Italic characters
Underlined = 1 << 2, ///< Underlined characters
StrikeThrough = 1 << 3 ///< Strike through characters
};
////////////////////////////////////////////////////////////
/// \brief Default constructor
///
/// Creates an empty text.
///
////////////////////////////////////////////////////////////
Text();
////////////////////////////////////////////////////////////
/// \brief Construct the text from a string, font and size
///
/// Note that if the used font is a bitmap font, it is not
/// scalable, thus not all requested sizes will be available
/// to use. This needs to be taken into consideration when
/// setting the character size. If you need to display text
/// of a certain size, make sure the corresponding bitmap
/// font that supports that size is used.
///
/// \param string Text assigned to the string
/// \param font Font used to draw the string
/// \param characterSize Base size of characters, in pixels
///
////////////////////////////////////////////////////////////
Text(const String& string, const Font& font, unsigned int characterSize = 30);
////////////////////////////////////////////////////////////
/// \brief Set the text's string
///
/// The \a string argument is a sf::String, which can
/// automatically be constructed from standard string types.
/// So, the following calls are all valid:
/// \code
/// text.setString("hello");
/// text.setString(L"hello");
/// text.setString(std::string("hello"));
/// text.setString(std::wstring(L"hello"));
/// \endcode
/// A text's string is empty by default.
///
/// \param string New string
///
/// \see getString
///
////////////////////////////////////////////////////////////
void setString(const String& string);
////////////////////////////////////////////////////////////
/// \brief Set the text's font
///
/// The \a font argument refers to a font that must
/// exist as long as the text uses it. Indeed, the text
/// doesn't store its own copy of the font, but rather keeps
/// a pointer to the one that you passed to this function.
/// If the font is destroyed and the text tries to
/// use it, the behavior is undefined.
///
/// \param font New font
///
/// \see getFont
///
////////////////////////////////////////////////////////////
void setFont(const Font& font);
////////////////////////////////////////////////////////////
/// \brief Set the character size
///
/// The default size is 30.
///
/// Note that if the used font is a bitmap font, it is not
/// scalable, thus not all requested sizes will be available
/// to use. This needs to be taken into consideration when
/// setting the character size. If you need to display text
/// of a certain size, make sure the corresponding bitmap
/// font that supports that size is used.
///
/// \param size New character size, in pixels
///
/// \see getCharacterSize
///
////////////////////////////////////////////////////////////
void setCharacterSize(unsigned int size);
////////////////////////////////////////////////////////////
/// \brief Set the line spacing factor
///
/// The default spacing between lines is defined by the font.
/// This method enables you to set a factor for the spacing
/// between lines. By default the line spacing factor is 1.
///
/// \param spacingFactor New line spacing factor
///
/// \see getLineSpacing
///
////////////////////////////////////////////////////////////
void setLineSpacing(float spacingFactor);
////////////////////////////////////////////////////////////
/// \brief Set the letter spacing factor
///
/// The default spacing between letters is defined by the font.
/// This factor doesn't directly apply to the existing
/// spacing between each character, it rather adds a fixed
/// space between them which is calculated from the font
/// metrics and the character size.
/// Note that factors below 1 (including negative numbers) bring
/// characters closer to each other.
/// By default the letter spacing factor is 1.
///
/// \param spacingFactor New letter spacing factor
///
/// \see getLetterSpacing
///
////////////////////////////////////////////////////////////
void setLetterSpacing(float spacingFactor);
////////////////////////////////////////////////////////////
/// \brief Set the text's style
///
/// You can pass a combination of one or more styles, for
/// example sf::Text::Bold | sf::Text::Italic.
/// The default style is sf::Text::Regular.
///
/// \param style New style
///
/// \see getStyle
///
////////////////////////////////////////////////////////////
void setStyle(Uint32 style);
////////////////////////////////////////////////////////////
/// \brief Set the fill color of the text
///
/// By default, the text's fill color is opaque white.
/// Setting the fill color to a transparent color with an outline
/// will cause the outline to be displayed in the fill area of the text.
///
/// \param color New fill color of the text
///
/// \see getFillColor
///
/// \deprecated There is now fill and outline colors instead
/// of a single global color.
/// Use setFillColor() or setOutlineColor() instead.
///
////////////////////////////////////////////////////////////
SFML_DEPRECATED void setColor(const Color& color);
////////////////////////////////////////////////////////////
/// \brief Set the fill color of the text
///
/// By default, the text's fill color is opaque white.
/// Setting the fill color to a transparent color with an outline
/// will cause the outline to be displayed in the fill area of the text.
///
/// \param color New fill color of the text
///
/// \see getFillColor
///
////////////////////////////////////////////////////////////
void setFillColor(const Color& color);
////////////////////////////////////////////////////////////
/// \brief Set the outline color of the text
///
/// By default, the text's outline color is opaque black.
///
/// \param color New outline color of the text
///
/// \see getOutlineColor
///
////////////////////////////////////////////////////////////
void setOutlineColor(const Color& color);
////////////////////////////////////////////////////////////
/// \brief Set the thickness of the text's outline
///
/// By default, the outline thickness is 0.
///
/// Be aware that using a negative value for the outline
/// thickness will cause distorted rendering.
///
/// \param thickness New outline thickness, in pixels
///
/// \see getOutlineThickness
///
////////////////////////////////////////////////////////////
void setOutlineThickness(float thickness);
////////////////////////////////////////////////////////////
/// \brief Get the text's string
///
/// The returned string is a sf::String, which can automatically
/// be converted to standard string types. So, the following
/// lines of code are all valid:
/// \code
/// sf::String s1 = text.getString();
/// std::string s2 = text.getString();
/// std::wstring s3 = text.getString();
/// \endcode
///
/// \return Text's string
///
/// \see setString
///
////////////////////////////////////////////////////////////
const String& getString() const;
////////////////////////////////////////////////////////////
/// \brief Get the text's font
///
/// If the text has no font attached, a NULL pointer is returned.
/// The returned pointer is const, which means that you
/// cannot modify the font when you get it from this function.
///
/// \return Pointer to the text's font
///
/// \see setFont
///
////////////////////////////////////////////////////////////
const Font* getFont() const;
////////////////////////////////////////////////////////////
/// \brief Get the character size
///
/// \return Size of the characters, in pixels
///
/// \see setCharacterSize
///
////////////////////////////////////////////////////////////
unsigned int getCharacterSize() const;
////////////////////////////////////////////////////////////
/// \brief Get the size of the letter spacing factor
///
/// \return Size of the letter spacing factor
///
/// \see setLetterSpacing
///
////////////////////////////////////////////////////////////
float getLetterSpacing() const;
////////////////////////////////////////////////////////////
/// \brief Get the size of the line spacing factor
///
/// \return Size of the line spacing factor
///
/// \see setLineSpacing
///
////////////////////////////////////////////////////////////
float getLineSpacing() const;
////////////////////////////////////////////////////////////
/// \brief Get the text's style
///
/// \return Text's style
///
/// \see setStyle
///
////////////////////////////////////////////////////////////
Uint32 getStyle() const;
////////////////////////////////////////////////////////////
/// \brief Get the fill color of the text
///
/// \return Fill color of the text
///
/// \see setFillColor
///
/// \deprecated There is now fill and outline colors instead
/// of a single global color.
/// Use getFillColor() or getOutlineColor() instead.
///
////////////////////////////////////////////////////////////
SFML_DEPRECATED const Color& getColor() const;
////////////////////////////////////////////////////////////
/// \brief Get the fill color of the text
///
/// \return Fill color of the text
///
/// \see setFillColor
///
////////////////////////////////////////////////////////////
const Color& getFillColor() const;
////////////////////////////////////////////////////////////
/// \brief Get the outline color of the text
///
/// \return Outline color of the text
///
/// \see setOutlineColor
///
////////////////////////////////////////////////////////////
const Color& getOutlineColor() const;
////////////////////////////////////////////////////////////
/// \brief Get the outline thickness of the text
///
/// \return Outline thickness of the text, in pixels
///
/// \see setOutlineThickness
///
////////////////////////////////////////////////////////////
float getOutlineThickness() const;
////////////////////////////////////////////////////////////
/// \brief Return the position of the \a index-th character
///
/// This function computes the visual position of a character
/// from its index in the string. The returned position is
/// in global coordinates (translation, rotation, scale and
/// origin are applied).
/// If \a index is out of range, the position of the end of
/// the string is returned.
///
/// \param index Index of the character
///
/// \return Position of the character
///
////////////////////////////////////////////////////////////
Vector2f findCharacterPos(std::size_t index) const;
////////////////////////////////////////////////////////////
/// \brief Get the local bounding rectangle of the entity
///
/// The returned rectangle is in local coordinates, which means
/// that it ignores the transformations (translation, rotation,
/// scale, ...) that are applied to the entity.
/// In other words, this function returns the bounds of the
/// entity in the entity's coordinate system.
///
/// \return Local bounding rectangle of the entity
///
////////////////////////////////////////////////////////////
FloatRect getLocalBounds() const;
////////////////////////////////////////////////////////////
/// \brief Get the global bounding rectangle of the entity
///
/// The returned rectangle is in global coordinates, which means
/// that it takes into account the transformations (translation,
/// rotation, scale, ...) that are applied to the entity.
/// In other words, this function returns the bounds of the
/// text in the global 2D world's coordinate system.
///
/// \return Global bounding rectangle of the entity
///
////////////////////////////////////////////////////////////
FloatRect getGlobalBounds() const;
private:
////////////////////////////////////////////////////////////
/// \brief Draw the text to a render target
///
/// \param target Render target to draw to
/// \param states Current render states
///
////////////////////////////////////////////////////////////
virtual void draw(RenderTarget& target, RenderStates states) const;
////////////////////////////////////////////////////////////
/// \brief Make sure the text's geometry is updated
///
/// All the attributes related to rendering are cached, such
/// that the geometry is only updated when necessary.
///
////////////////////////////////////////////////////////////
void ensureGeometryUpdate() const;
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
String m_string; ///< String to display
const Font* m_font; ///< Font used to display the string
unsigned int m_characterSize; ///< Base size of characters, in pixels
float m_letterSpacingFactor; ///< Spacing factor between letters
float m_lineSpacingFactor; ///< Spacing factor between lines
Uint32 m_style; ///< Text style (see Style enum)
Color m_fillColor; ///< Text fill color
Color m_outlineColor; ///< Text outline color
float m_outlineThickness; ///< Thickness of the text's outline
mutable VertexArray m_vertices; ///< Vertex array containing the fill geometry
mutable VertexArray m_outlineVertices; ///< Vertex array containing the outline geometry
mutable FloatRect m_bounds; ///< Bounding rectangle of the text (in local coordinates)
mutable bool m_geometryNeedUpdate; ///< Does the geometry need to be recomputed?
mutable Uint64 m_fontTextureId; ///< The font texture id
};
} // namespace sf
#endif // SFML_TEXT_HPP
////////////////////////////////////////////////////////////
/// \class sf::Text
/// \ingroup graphics
///
/// sf::Text is a drawable class that allows to easily display
/// some text with custom style and color on a render target.
///
/// It inherits all the functions from sf::Transformable:
/// position, rotation, scale, origin. It also adds text-specific
/// properties such as the font to use, the character size,
/// the font style (bold, italic, underlined and strike through), the
/// text color, the outline thickness, the outline color, the character
/// spacing, the line spacing and the text to display of course.
/// It also provides convenience functions to calculate the
/// graphical size of the text, or to get the global position
/// of a given character.
///
/// sf::Text works in combination with the sf::Font class, which
/// loads and provides the glyphs (visual characters) of a given font.
///
/// The separation of sf::Font and sf::Text allows more flexibility
/// and better performances: indeed a sf::Font is a heavy resource,
/// and any operation on it is slow (often too slow for real-time
/// applications). On the other side, a sf::Text is a lightweight
/// object which can combine the glyphs data and metrics of a sf::Font
/// to display any text on a render target.
///
/// It is important to note that the sf::Text instance doesn't
/// copy the font that it uses, it only keeps a reference to it.
/// Thus, a sf::Font must not be destructed while it is
/// used by a sf::Text (i.e. never write a function that
/// uses a local sf::Font instance for creating a text).
///
/// See also the note on coordinates and undistorted rendering in sf::Transformable.
///
/// Usage example:
/// \code
/// // Declare and load a font
/// sf::Font font;
/// font.loadFromFile("arial.ttf");
///
/// // Create a text
/// sf::Text text("hello", font);
/// text.setCharacterSize(30);
/// text.setStyle(sf::Text::Bold);
/// text.setFillColor(sf::Color::Red);
///
/// // Draw it
/// window.draw(text);
/// \endcode
///
/// \see sf::Font, sf::Transformable
///
////////////////////////////////////////////////////////////