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////////////////////////////////////////////////////////////
//
// 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_CURSOR_HPP
#define SFML_CURSOR_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Window/Export.hpp>
#include <SFML/System/NonCopyable.hpp>
#include <SFML/System/Vector2.hpp>
namespace sf
{
namespace priv
{
class CursorImpl;
}
////////////////////////////////////////////////////////////
/// \brief Cursor defines the appearance of a system cursor
///
////////////////////////////////////////////////////////////
class SFML_WINDOW_API Cursor : NonCopyable
{
public:
////////////////////////////////////////////////////////////
/// \brief Enumeration of the native system cursor types
///
/// Refer to the following table to determine which cursor
/// is available on which platform.
///
/// Type | Linux | Mac OS X | Windows |
/// ------------------------------------|:-----:|:--------:|:--------:|
/// sf::Cursor::Arrow | yes | yes | yes |
/// sf::Cursor::ArrowWait | no | no | yes |
/// sf::Cursor::Wait | yes | no | yes |
/// sf::Cursor::Text | yes | yes | yes |
/// sf::Cursor::Hand | yes | yes | yes |
/// sf::Cursor::SizeHorizontal | yes | yes | yes |
/// sf::Cursor::SizeVertical | yes | yes | yes |
/// sf::Cursor::SizeTopLeftBottomRight | no | no | yes |
/// sf::Cursor::SizeBottomLeftTopRight | no | no | yes |
/// sf::Cursor::SizeAll | yes | no | yes |
/// sf::Cursor::Cross | yes | yes | yes |
/// sf::Cursor::Help | yes | no | yes |
/// sf::Cursor::NotAllowed | yes | yes | yes |
///
////////////////////////////////////////////////////////////
enum Type
{
Arrow, ///< Arrow cursor (default)
ArrowWait, ///< Busy arrow cursor
Wait, ///< Busy cursor
Text, ///< I-beam, cursor when hovering over a field allowing text entry
Hand, ///< Pointing hand cursor
SizeHorizontal, ///< Horizontal double arrow cursor
SizeVertical, ///< Vertical double arrow cursor
SizeTopLeftBottomRight, ///< Double arrow cursor going from top-left to bottom-right
SizeBottomLeftTopRight, ///< Double arrow cursor going from bottom-left to top-right
SizeAll, ///< Combination of SizeHorizontal and SizeVertical
Cross, ///< Crosshair cursor
Help, ///< Help cursor
NotAllowed ///< Action not allowed cursor
};
public:
////////////////////////////////////////////////////////////
/// \brief Default constructor
///
/// This constructor doesn't actually create the cursor;
/// initially the new instance is invalid and must not be
/// used until either loadFromPixels() or loadFromSystem()
/// is called and successfully created a cursor.
///
////////////////////////////////////////////////////////////
Cursor();
////////////////////////////////////////////////////////////
/// \brief Destructor
///
/// This destructor releases the system resources
/// associated with this cursor, if any.
///
////////////////////////////////////////////////////////////
~Cursor();
////////////////////////////////////////////////////////////
/// \brief Create a cursor with the provided image
///
/// \a pixels must be an array of \a width by \a height pixels
/// in 32-bit RGBA format. If not, this will cause undefined behavior.
///
/// If \a pixels is null or either \a width or \a height are 0,
/// the current cursor is left unchanged and the function will
/// return false.
///
/// In addition to specifying the pixel data, you can also
/// specify the location of the hotspot of the cursor. The
/// hotspot is the pixel coordinate within the cursor image
/// which will be located exactly where the mouse pointer
/// position is. Any mouse actions that are performed will
/// return the window/screen location of the hotspot.
///
/// \warning On Unix, the pixels are mapped into a monochrome
/// bitmap: pixels with an alpha channel to 0 are
/// transparent, black if the RGB channel are close
/// to zero, and white otherwise.
///
/// \param pixels Array of pixels of the image
/// \param size Width and height of the image
/// \param hotspot (x,y) location of the hotspot
/// \return true if the cursor was successfully loaded;
/// false otherwise
///
////////////////////////////////////////////////////////////
bool loadFromPixels(const Uint8* pixels, Vector2u size, Vector2u hotspot);
////////////////////////////////////////////////////////////
/// \brief Create a native system cursor
///
/// Refer to the list of cursor available on each system
/// (see sf::Cursor::Type) to know whether a given cursor is
/// expected to load successfully or is not supported by
/// the operating system.
///
/// \param type Native system cursor type
/// \return true if and only if the corresponding cursor is
/// natively supported by the operating system;
/// false otherwise
///
////////////////////////////////////////////////////////////
bool loadFromSystem(Type type);
private:
friend class Window;
////////////////////////////////////////////////////////////
/// \brief Get access to the underlying implementation
///
/// This is primarily designed for sf::Window::setMouseCursor,
/// hence the friendship.
///
/// \return a reference to the OS-specific implementation
///
////////////////////////////////////////////////////////////
const priv::CursorImpl& getImpl() const;
private:
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
priv::CursorImpl* m_impl; ///< Platform-specific implementation of the cursor
};
} // namespace sf
#endif // SFML_CURSOR_HPP
////////////////////////////////////////////////////////////
/// \class sf::Cursor
/// \ingroup window
///
/// \warning Features related to Cursor are not supported on
/// iOS and Android.
///
/// This class abstracts the operating system resources
/// associated with either a native system cursor or a custom
/// cursor.
///
/// After loading the cursor the graphical appearance
/// with either loadFromPixels() or loadFromSystem(), the
/// cursor can be changed with sf::Window::setMouseCursor().
///
/// The behaviour is undefined if the cursor is destroyed while
/// in use by the window.
///
/// Usage example:
/// \code
/// sf::Window window;
///
/// // ... create window as usual ...
///
/// sf::Cursor cursor;
/// if (cursor.loadFromSystem(sf::Cursor::Hand))
/// window.setMouseCursor(cursor);
/// \endcode
///
/// \see sf::Window::setMouseCursor
///
////////////////////////////////////////////////////////////
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