//======================================================================== // GLFW 3.0 - www.glfw.org //------------------------------------------------------------------------ // Copyright (c) 2002-2006 Marcus Geelnard // Copyright (c) 2006-2010 Camilla Berglund // // 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 _internal_h_ #define _internal_h_ #include "config.h" #if defined(_GLFW_USE_OPENGL) // This is the default for glfw3.h #elif defined(_GLFW_USE_GLESV1) #define GLFW_INCLUDE_ES1 #elif defined(_GLFW_USE_GLESV2) #define GLFW_INCLUDE_ES2 #else #error "No supported client library selected" #endif // Disable the inclusion of the platform glext.h by gl.h to allow proper // inclusion of our own, newer glext.h below #define GL_GLEXT_LEGACY #include "../include/GLFW/glfw3.h" #if defined(_GLFW_USE_OPENGL) // This path may need to be changed if you build GLFW using your own setup // GLFW comes with its own copy of glext.h since it uses fairly new extensions // and not all development environments come with an up-to-date version #include "../deps/GL/glext.h" #endif typedef struct _GLFWhints _GLFWhints; typedef struct _GLFWwndconfig _GLFWwndconfig; typedef struct _GLFWfbconfig _GLFWfbconfig; typedef struct _GLFWwindow _GLFWwindow; typedef struct _GLFWlibrary _GLFWlibrary; typedef struct _GLFWmonitor _GLFWmonitor; #if defined(_GLFW_COCOA) #include "cocoa_platform.h" #elif defined(_GLFW_WIN32) #include "win32_platform.h" #elif defined(_GLFW_X11) #include "x11_platform.h" #else #error "No supported window creation API selected" #endif //======================================================================== // Doxygen group definitions //======================================================================== /*! @defgroup platform Platform interface * @brief The interface implemented by the platform-specific code. * * The platform API is the interface exposed by the platform-specific code for * each platform and is called by the shared code of the public API It mirrors * the public API except it uses objects instead of handles. */ /*! @defgroup event Event interface * @brief The interface used by the platform-specific code to report events. * * The event API is used by the platform-specific code to notify the shared * code of events that can be translated into state changes and/or callback * calls. */ /*! @defgroup utility Utility functions * @brief Various utility functions for internal use. * * These functions are shared code and may be used by any part of GLFW * Each platform may add its own utility functions, but those may only be * called by the platform-specific code */ //======================================================================== // Helper macros //======================================================================== // Checks for whether the library has been intitalized #define _GLFW_REQUIRE_INIT() \ if (!_glfwInitialized) \ { \ _glfwInputError(GLFW_NOT_INITIALIZED, NULL); \ return; \ } #define _GLFW_REQUIRE_INIT_OR_RETURN(x) \ if (!_glfwInitialized) \ { \ _glfwInputError(GLFW_NOT_INITIALIZED, NULL); \ return x; \ } // Swaps the provided pointers #define _GLFW_SWAP_POINTERS(x, y) \ { \ void* t; \ t = x; \ x = y; \ y = t; \ } //======================================================================== // Internal types //======================================================================== /*! @brief Window and context configuration. * * Parameters relating to the creation of the context and window but not * directly related to the framebuffer. This is used to pass window and * context creation parameters from shared code to the platform API. */ struct _GLFWwndconfig { int width; int height; const char* title; GLboolean resizable; GLboolean visible; GLboolean decorated; int clientAPI; int glMajor; int glMinor; GLboolean glForward; GLboolean glDebug; int glProfile; int glRobustness; _GLFWmonitor* monitor; _GLFWwindow* share; }; /*! @brief Framebuffer configuration. * * This describes buffers and their sizes. It also contains * a platform-specific ID used to map back to the backend API's object. * * It is used to pass framebuffer parameters from shared code to the platform * API and also to enumerate and select available framebuffer configs. */ struct _GLFWfbconfig { int redBits; int greenBits; int blueBits; int alphaBits; int depthBits; int stencilBits; int accumRedBits; int accumGreenBits; int accumBlueBits; int accumAlphaBits; int auxBuffers; GLboolean stereo; int samples; GLboolean sRGB; // This is defined in the context API's platform.h _GLFW_PLATFORM_FBCONFIG; }; /*! @brief Window and context structure. */ struct _GLFWwindow { struct _GLFWwindow* next; // Window settings and state GLboolean iconified; GLboolean resizable; GLboolean decorated; GLboolean visible; GLboolean closed; void* userPointer; GLFWvidmode videoMode; _GLFWmonitor* monitor; // Window input state GLboolean stickyKeys; GLboolean stickyMouseButtons; double cursorPosX, cursorPosY; int cursorMode; char mouseButton[GLFW_MOUSE_BUTTON_LAST + 1]; char key[GLFW_KEY_LAST + 1]; // OpenGL extensions and context attributes int clientAPI; int glMajor, glMinor, glRevision; GLboolean glForward, glDebug; int glProfile; int glRobustness; #if defined(_GLFW_USE_OPENGL) PFNGLGETSTRINGIPROC GetStringi; #endif struct { GLFWwindowposfun pos; GLFWwindowsizefun size; GLFWwindowclosefun close; GLFWwindowrefreshfun refresh; GLFWwindowfocusfun focus; GLFWwindowiconifyfun iconify; GLFWframebuffersizefun fbsize; GLFWmousebuttonfun mouseButton; GLFWcursorposfun cursorPos; GLFWcursorenterfun cursorEnter; GLFWscrollfun scroll; GLFWkeyfun key; GLFWcharfun character; } callbacks; // This is defined in the window API's platform.h _GLFW_PLATFORM_WINDOW_STATE; // This is defined in the context API's platform.h _GLFW_PLATFORM_CONTEXT_STATE; }; /*! @brief Monitor structure. */ struct _GLFWmonitor { char* name; // Physical dimensions in millimeters. int widthMM, heightMM; GLFWvidmode* modes; int modeCount; GLFWvidmode currentMode; GLFWgammaramp originalRamp; GLFWgammaramp currentRamp; // This is defined in the window API's platform.h _GLFW_PLATFORM_MONITOR_STATE; }; /*! @brief Library global data. */ struct _GLFWlibrary { struct { int redBits; int greenBits; int blueBits; int alphaBits; int depthBits; int stencilBits; int accumRedBits; int accumGreenBits; int accumBlueBits; int accumAlphaBits; int auxBuffers; GLboolean stereo; GLboolean resizable; GLboolean visible; GLboolean decorated; int samples; GLboolean sRGB; int refreshRate; int clientAPI; int glMajor; int glMinor; GLboolean glForward; GLboolean glDebug; int glProfile; int glRobustness; } hints; double cursorPosX, cursorPosY; _GLFWwindow* windowListHead; _GLFWwindow* focusedWindow; _GLFWmonitor** monitors; int monitorCount; struct { GLFWmonitorfun monitor; } callbacks; // This is defined in the window API's platform.h _GLFW_PLATFORM_LIBRARY_WINDOW_STATE; // This is defined in the context API's platform.h _GLFW_PLATFORM_LIBRARY_OPENGL_STATE; }; //======================================================================== // Global state shared between compilation units of GLFW //======================================================================== /*! @brief Flag indicating whether GLFW has been successfully initialized. */ extern GLboolean _glfwInitialized; /*! @brief All global data protected by @ref _glfwInitialized. * This should only be touched after a call to @ref glfwInit that has not been * followed by a call to @ref glfwTerminate. */ extern _GLFWlibrary _glfw; //======================================================================== // Platform API functions //======================================================================== /*! @brief Initializes the platform-specific part of the library. * @return `GL_TRUE` if successful, or `GL_FALSE` if an error occurred. * @ingroup platform */ int _glfwPlatformInit(void); /*! @brief Terminates the platform-specific part of the library. * @ingroup platform */ void _glfwPlatformTerminate(void); /*! @copydoc glfwGetVersionString * @ingroup platform * * @note The returned string must be available for the duration of the program. * * @note The returned string must not change for the duration of the program. */ const char* _glfwPlatformGetVersionString(void); /*! @copydoc glfwSetCursorPos * @ingroup platform */ void _glfwPlatformSetCursorPos(_GLFWwindow* window, double xpos, double ypos); /*! @brief Sets up the specified cursor mode for the specified window. * @param[in] window The window whose cursor mode to change. * @param[in] mode The desired cursor mode. * @ingroup platform */ void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode); /*! @copydoc glfwGetMonitors * @ingroup platform */ _GLFWmonitor** _glfwPlatformGetMonitors(int* count); /*! @brief Checks whether two monitor objects represent the same monitor. * * @param[in] first The first monitor. * @param[in] second The second monitor. * @return @c GL_TRUE if the monitor objects represent the same monitor, or @c * GL_FALSE otherwise. * @ingroup platform */ GLboolean _glfwPlatformIsSameMonitor(_GLFWmonitor* first, _GLFWmonitor* second); /*! @copydoc glfwGetMonitorPos * @ingroup platform */ void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos); /*! @copydoc glfwGetVideoModes * @ingroup platform */ GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* count); /*! @ingroup platform */ void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode); /*! @copydoc glfwGetGammaRamp * @ingroup platform */ void _glfwPlatformGetGammaRamp(_GLFWmonitor* monitor, GLFWgammaramp* ramp); /*! @copydoc glfwSetGammaRamp * @ingroup platform */ void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp); /*! @copydoc glfwSetClipboardString * @ingroup platform */ void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string); /*! @copydoc glfwGetClipboardString * @ingroup platform * * @note The returned string must be valid until the next call to @ref * _glfwPlatformGetClipboardString or @ref _glfwPlatformSetClipboardString. */ const char* _glfwPlatformGetClipboardString(_GLFWwindow* window); /*! @copydoc glfwJoystickPresent * @ingroup platform */ int _glfwPlatformJoystickPresent(int joy); /*! @copydoc glfwGetJoystickAxes * @ingroup platform */ const float* _glfwPlatformGetJoystickAxes(int joy, int* count); /*! @copydoc glfwGetJoystickButtons * @ingroup platform */ const unsigned char* _glfwPlatformGetJoystickButtons(int joy, int* count); /*! @copydoc glfwGetJoystickName * @ingroup platform */ const char* _glfwPlatformGetJoystickName(int joy); /*! @copydoc glfwGetTime * @ingroup platform */ double _glfwPlatformGetTime(void); /*! @copydoc glfwSetTime * @ingroup platform */ void _glfwPlatformSetTime(double time); /*! @ingroup platform */ int _glfwPlatformCreateWindow(_GLFWwindow* window, const _GLFWwndconfig* wndconfig, const _GLFWfbconfig* fbconfig); /*! @ingroup platform */ void _glfwPlatformDestroyWindow(_GLFWwindow* window); /*! @copydoc glfwSetWindowTitle * @ingroup platform */ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title); /*! @copydoc glfwGetWindowPos * @ingroup platform */ void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos); /*! @copydoc glfwSetWindowPos * @ingroup platform */ void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos); /*! @copydoc glfwGetWindowSize * @ingroup platform */ void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height); /*! @copydoc glfwSetWindowSize * @ingroup platform */ void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height); /*! @copydoc glfwGetFramebufferSize * @ingroup platform */ void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height); /*! @copydoc glfwIconifyWindow * @ingroup platform */ void _glfwPlatformIconifyWindow(_GLFWwindow* window); /*! @copydoc glfwRestoreWindow * @ingroup platform */ void _glfwPlatformRestoreWindow(_GLFWwindow* window); /*! @copydoc glfwShowWindow * @ingroup platform */ void _glfwPlatformShowWindow(_GLFWwindow* window); /*! @copydoc glfwHideWindow * @ingroup platform */ void _glfwPlatformHideWindow(_GLFWwindow* window); /*! @copydoc glfwPollEvents * @ingroup platform */ void _glfwPlatformPollEvents(void); /*! @copydoc glfwWaitEvents * @ingroup platform */ void _glfwPlatformWaitEvents(void); /*! @copydoc glfwMakeContextCurrent * @ingroup platform */ void _glfwPlatformMakeContextCurrent(_GLFWwindow* window); /*! @copydoc glfwGetCurrentContext * @ingroup platform */ _GLFWwindow* _glfwPlatformGetCurrentContext(void); /*! @copydoc glfwSwapBuffers * @ingroup platform */ void _glfwPlatformSwapBuffers(_GLFWwindow* window); /*! @copydoc glfwSwapInterval * @ingroup platform */ void _glfwPlatformSwapInterval(int interval); /*! @ingroup platform */ int _glfwPlatformExtensionSupported(const char* extension); /*! @copydoc glfwGetProcAddress * @ingroup platform */ GLFWglproc _glfwPlatformGetProcAddress(const char* procname); //======================================================================== // Event API functions //======================================================================== /*! @brief Notifies shared code of a window focus event. * @param[in] window The window that received the event. * @param[in] focused `GL_TRUE` if the window received focus, or `GL_FALSE` * if it lost focus. * @ingroup event */ void _glfwInputWindowFocus(_GLFWwindow* window, GLboolean focused); /*! @brief Notifies shared code of a window movement event. * @param[in] window The window that received the event. * @param[in] xpos The new x-coordinate of the client area of the window. * @param[in] ypos The new y-coordinate of the client area of the window. * @ingroup event */ void _glfwInputWindowPos(_GLFWwindow* window, int xpos, int ypos); /*! @brief Notifies shared code of a window resize event. * @param[in] window The window that received the event. * @param[in] width The new width of the client area of the window. * @param[in] height The new height of the client area of the window. * @ingroup event */ void _glfwInputWindowSize(_GLFWwindow* window, int width, int height); /*! @brief Notifies shared code of a framebuffer resize event. * @param[in] window The window that received the event. * @param[in] width The new width, in pixels, of the framebuffer. * @param[in] height The new height, in pixels, of the framebuffer. * @ingroup event */ void _glfwInputFramebufferSize(_GLFWwindow* window, int width, int height); /*! @brief Notifies shared code of a window iconification event. * @param[in] window The window that received the event. * @param[in] iconified `GL_TRUE` if the window was iconified, or `GL_FALSE` * if it was restored. * @ingroup event */ void _glfwInputWindowIconify(_GLFWwindow* window, int iconified); /*! @brief Notifies shared code of a window show/hide event. * @param[in] window The window that received the event. * @param[in] visible `GL_TRUE` if the window was shown, or `GL_FALSE` if it * was hidden. * @ingroup event */ void _glfwInputWindowVisibility(_GLFWwindow* window, int visible); /*! @brief Notifies shared code of a window damage event. * @param[in] window The window that received the event. */ void _glfwInputWindowDamage(_GLFWwindow* window); /*! @brief Notifies shared code of a window close request event * @param[in] window The window that received the event. * @ingroup event */ void _glfwInputWindowCloseRequest(_GLFWwindow* window); /*! @brief Notifies shared code of a physical key event. * @param[in] window The window that received the event. * @param[in] key The key that was pressed or released. * @param[in] scancode The system-specific scan code of the key. * @param[in] action @ref GLFW_PRESS or @ref GLFW_RELEASE. * @param[in] mods The modifiers pressed when the event was generated. * @ingroup event */ void _glfwInputKey(_GLFWwindow* window, int key, int scancode, int action, int mods); /*! @brief Notifies shared code of a Unicode character input event. * @param[in] window The window that received the event. * @param[in] character The Unicode code point of the input character. * @ingroup event */ void _glfwInputChar(_GLFWwindow* window, unsigned int character); /*! @brief Notifies shared code of a scroll event. * @param[in] window The window that received the event. * @param[in] x The scroll offset along the x-axis. * @param[in] y The scroll offset along the y-axis. * @ingroup event */ void _glfwInputScroll(_GLFWwindow* window, double x, double y); /*! @brief Notifies shared code of a mouse button click event. * @param[in] window The window that received the event. * @param[in] button The button that was pressed or released. * @param[in] action @ref GLFW_PRESS or @ref GLFW_RELEASE. * @ingroup event */ void _glfwInputMouseClick(_GLFWwindow* window, int button, int action, int mods); /*! @brief Notifies shared code of a cursor motion event. * @param[in] window The window that received the event. * @param[in] x The new x-coordinate of the cursor, relative to the left edge * of the client area of the window. * @param[in] y The new y-coordinate of the cursor, relative to the top edge * of the client area of the window. * @ingroup event */ void _glfwInputCursorMotion(_GLFWwindow* window, double x, double y); /*! @brief Notifies shared code of a cursor enter/leave event. * @param[in] window The window that received the event. * @param[in] entered `GL_TRUE` if the cursor entered the client area of the * window, or `GL_FALSE` if it left it. * @ingroup event */ void _glfwInputCursorEnter(_GLFWwindow* window, int entered); /*! @ingroup event */ void _glfwInputMonitorChange(void); /*! @brief Notifies shared code of an error. * @param[in] error The error code most suitable for the error. * @param[in] format The `printf` style format string of the error * description. * @ingroup event */ void _glfwInputError(int error, const char* format, ...); //======================================================================== // Utility functions //======================================================================== /*! @ingroup utility */ const GLFWvidmode* _glfwChooseVideoMode(_GLFWmonitor* monitor, const GLFWvidmode* desired); /*! @brief Performs lexical comparison between two @ref GLFWvidmode structures. * @ingroup utility */ int _glfwCompareVideoModes(const GLFWvidmode* first, const GLFWvidmode* second); /*! @brief Splits a color depth into red, green and blue bit depths. * @ingroup utility */ void _glfwSplitBPP(int bpp, int* red, int* green, int* blue); /*! @brief Searches an extension string for the specified extension. * @param[in] string The extension string to search. * @param[in] extensions The extension to search for. * @return `GL_TRUE` if the extension was found, or `GL_FALSE` otherwise. * @ingroup utility */ int _glfwStringInExtensionString(const char* string, const GLubyte* extensions); /*! @brief Chooses the framebuffer config that best matches the desired one. * @param[in] desired The desired framebuffer config. * @param[in] alternatives The framebuffer configs supported by the system. * @param[in] count The number of entries in the alternatives array. * @return The framebuffer config most closely matching the desired one, or @c * NULL if none fulfilled the hard constraints of the desired values. * @ingroup utility */ const _GLFWfbconfig* _glfwChooseFBConfig(const _GLFWfbconfig* desired, const _GLFWfbconfig* alternatives, unsigned int count); /*! @brief Retrieves the attributes of the current context. * @return `GL_TRUE` if successful, or `GL_FALSE` if the context is unusable. * @ingroup utility */ GLboolean _glfwRefreshContextAttribs(void); /*! @brief Checks whether the desired context attributes are valid. * @param[in] wndconfig The context attributes to check. * @return `GL_TRUE` if the context attributes are valid, or `GL_FALSE` * otherwise. * @ingroup utility * * This function checks things like whether the specified client API version * exists and whether all relevant options have supported and non-conflicting * values. */ GLboolean _glfwIsValidContextConfig(_GLFWwndconfig* wndconfig); /*! @brief Checks whether the current context fulfils the specified hard * constraints. * @param[in] wndconfig The desired context attributes. * @return `GL_TRUE` if the context fulfils the hard constraints, or `GL_FALSE` * otherwise. * @ingroup utility */ GLboolean _glfwIsValidContext(_GLFWwndconfig* wndconfig); /*! @ingroup utility */ void _glfwAllocGammaArrays(GLFWgammaramp* ramp, unsigned int size); /*! @ingroup utility */ void _glfwFreeGammaArrays(GLFWgammaramp* ramp); /*! @ingroup utility */ _GLFWmonitor* _glfwCreateMonitor(const char* name, int widthMM, int heightMM); /*! @ingroup utility */ void _glfwDestroyMonitor(_GLFWmonitor* monitor); /*! @ingroup utility */ void _glfwDestroyMonitors(_GLFWmonitor** monitors, int count); #endif // _internal_h_