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46c1e4028f
glfw/src/internal.h
Camilla Berglund 46c1e4028f Begun integrating mode setting and monitor API.
2013-01-03 17:56:59 +01:00

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//========================================================================
// GLFW - An OpenGL library
// Platform: Any
// API version: 3.0
// WWW: http://www.glfw.org/
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.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 _internal_h_
#define _internal_h_
//========================================================================
// Doxygen group definitions
//========================================================================
/*! @defgroup platform Platform API
* @brief The API 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 API
* @brief The API 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.
*
* 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
*/
//========================================================================
// Input handling definitions
//========================================================================
// Internal key and button state/action definitions
#define GLFW_STICK 2
//========================================================================
// Internal type declarations
//========================================================================
typedef struct _GLFWhints _GLFWhints;
typedef struct _GLFWwndconfig _GLFWwndconfig;
typedef struct _GLFWfbconfig _GLFWfbconfig;
typedef struct _GLFWwindow _GLFWwindow;
typedef struct _GLFWlibrary _GLFWlibrary;
typedef struct _GLFWmonitor _GLFWmonitor;
#include "config.h"
// 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/GL/glfw3.h"
// This path may need to be changed if you build GLFW using your own setup
// We ship and use our own copy of glext.h since GLFW uses fairly new
// extensions and not all operating systems come with an up-to-date version
#include "../support/GL/glext.h"
#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
//========================================================================
// Internal type definitions
//========================================================================
/*! @brief Window, framebuffer and context hints.
*
* It is used only by shared code and only to store parameters passed to us by
* @ref glfwWindowHint for use by @ref glfwCreateWindow.
*/
struct _GLFWhints
{
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;
int samples;
GLboolean sRGB;
int clientAPI;
int glMajor;
int glMinor;
GLboolean glForward;
GLboolean glDebug;
int glProfile;
int glRobustness;
int positionX;
int positionY;
};
/*! @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
{
const char* title;
GLboolean resizable;
GLboolean visible;
int positionX;
int positionY;
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;
GLFWintptr platformID;
};
/*! @brief Window and context structure.
*/
struct _GLFWwindow
{
struct _GLFWwindow* next;
// Window settings and state
int width, height;
int positionX, positionY;
GLboolean iconified;
GLboolean resizable;
GLboolean visible;
GLboolean closeRequested;
void* userPointer;
GLFWvidmode videoMode;
_GLFWmonitor* monitor;
// Window input state
GLboolean stickyKeys;
GLboolean stickyMouseButtons;
int cursorPosX, cursorPosY;
int cursorMode;
double scrollX, scrollY;
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;
PFNGLGETSTRINGIPROC GetStringi;
GLFWwindowposfun windowPosCallback;
GLFWwindowsizefun windowSizeCallback;
GLFWwindowclosefun windowCloseCallback;
GLFWwindowrefreshfun windowRefreshCallback;
GLFWwindowfocusfun windowFocusCallback;
GLFWwindowiconifyfun windowIconifyCallback;
GLFWmousebuttonfun mouseButtonCallback;
GLFWcursorposfun cursorPosCallback;
GLFWcursorenterfun cursorEnterCallback;
GLFWscrollfun scrollCallback;
GLFWkeyfun keyCallback;
GLFWcharfun charCallback;
// 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;
GLboolean primary;
// Physical dimensions in millimeters.
int widthMM, heightMM;
// Logical orientation of the screen on the desktop
int positionX, positionY;
GLFWvidmode* modes;
int modeCount;
// This is defined in the window API's platform.h
_GLFW_PLATFORM_MONITOR_STATE;
};
/*! @brief Library global data.
*/
struct _GLFWlibrary
{
_GLFWhints hints;
_GLFWwindow* windowListHead;
_GLFWwindow* focusedWindow;
_GLFWmonitor** monitors;
int monitorCount;
GLFWmonitorfun monitorCallback;
GLFWgammaramp currentRamp;
GLFWgammaramp originalRamp;
int originalRampSize;
GLboolean rampChanged;
// 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 @c GL_TRUE if successful, or @c 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);
/*! @brief Returns a string describing the compile-time configuration of the
* platform-specific part of the library.
* @return The version string.
* @ingroup platform
*
* The format of the string is as follows:
* @arg The name of the window system API used
* @arg The name of the context creation API used
* @arg Any additional options or APIs
*
* @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);
/*! @brief Sets the position of the system cursor.
* @param[in] window The window whose client area the specified posiiton is
* relative to.
* @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 platform
*/
void _glfwPlatformSetCursorPos(_GLFWwindow* window, int x, int y);
/*! @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);
/*! @ingroup platform
*/
_GLFWmonitor** _glfwPlatformGetMonitors(int* count);
/*! @ingroup platform
*/
void _glfwPlatformDestroyMonitor(_GLFWmonitor* monitor);
/*! @ingroup platform
*/
GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* count);
/*! @ingroup platform
*/
void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode);
/*! @brief Returns the current system gamma ramp.
* @param[out] ramp The current system gamma ramp.
* @ingroup platform
*/
void _glfwPlatformGetGammaRamp(GLFWgammaramp* ramp);
/*! @brief Sets the system gamma ramp.
* @param[in] ramp The desired system gamma ramp.
* @ingroup platform
*/
void _glfwPlatformSetGammaRamp(const GLFWgammaramp* ramp);
/*! @brief Sets the system clipboard to the specified string.
* @param[in] window The window who will own the system clipboard contents, on
* systems where this is necessary.
* @param[in] string The UTF-8 encoded string to use.
* @ingroup platform
*/
void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string);
/*! @brief Returns the string in the system clipboard.
* @param[in] window The window who will request the system clipboard contents,
* on systems where this is necessary.
* @return The UTF-8 encoded contents, or @c NULL if the system clipboard did
* not contain a string.
* @ingroup platform
*
* @note The returned string must be valid until the next call to @ref
* _glfwPlatformGetClipboardString or @ref _glfwPlatformSetClipboardString.
*/
const char* _glfwPlatformGetClipboardString(_GLFWwindow* window);
/*! @brief Returns the value of the specified joystick property.
* @param[in] joy The joystick to use.
* @param[in] param The property whose value to return.
* @return The value of the specified property, or zero if an error occurred.
* @ingroup platform
*/
int _glfwPlatformGetJoystickParam(int joy, int param);
/*! @ingroup platform
*/
int _glfwPlatformGetJoystickAxes(int joy, float* axes, int numaxes);
/*! @ingroup platform
*/
int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons, int numbuttons);
/*! @ingroup platform
*/
const char* _glfwPlatformGetJoystickName(int joy);
/*! @brief Returns the current value of the timer.
* @return The value, in seconds, of the timer.
* @ingroup platform
*/
double _glfwPlatformGetTime(void);
/*! @brief Sets the value of the timer.
* @param[in] time The new value, in seconds, of the timer.
* @ingroup platform
*/
void _glfwPlatformSetTime(double time);
/*! @ingroup platform
*/
int _glfwPlatformCreateWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig);
/*! @ingroup platform
*/
void _glfwPlatformDestroyWindow(_GLFWwindow* window);
/*! @ingroup platform
*/
void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title);
/*! @ingroup platform
*/
void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height);
/*! @ingroup platform
*/
void _glfwPlatformIconifyWindow(_GLFWwindow* window);
/*! @ingroup platform
*/
void _glfwPlatformRestoreWindow(_GLFWwindow* window);
/*! @ingroup platform
*/
void _glfwPlatformShowWindow(_GLFWwindow* window);
/*! @ingroup platform
*/
void _glfwPlatformHideWindow(_GLFWwindow* window);
/*! @ingroup platform
*/
void _glfwPlatformPollEvents(void);
/*! @ingroup platform
*/
void _glfwPlatformWaitEvents(void);
/*! @ingroup platform
*/
void _glfwPlatformMakeContextCurrent(_GLFWwindow* window);
/*! @ingroup platform
*/
_GLFWwindow* _glfwPlatformGetCurrentContext(void);
/*! @ingroup platform
*/
void _glfwPlatformSwapBuffers(_GLFWwindow* window);
/*! @ingroup platform
*/
void _glfwPlatformSwapInterval(int interval);
/*! @ingroup platform
*/
int _glfwPlatformExtensionSupported(const char* extension);
/*! @ingroup platform
*/
GLFWglproc _glfwPlatformGetProcAddress(const char* procname);
/*! @ingroup platform
*/
int _glfwPlatformExtensionSupported(const char* extension);
/*! @brief Returns the address of the specified client API function.
* @param[in] procname The name of the desired function.
* @return The address of the function, or @c NULL if it is not available.
* @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 @c GL_TRUE if the window received focus, or @c 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] x The new x-coordinate of the client area of the window.
* @param[in] x The new y-coordinate of the client area of the window.
* @ingroup event
*/
void _glfwInputWindowPos(_GLFWwindow* window, int x, int y);
/*! @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 window iconification event.
* @param[in] window The window that received the event.
* @param[in] iconified @c GL_TRUE if the window was iconified, or @c 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 @c GL_TRUE if the window was shown, or @c 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] action @ref GLFW_PRESS or @ref GLFW_RELEASE.
* @ingroup event
*/
void _glfwInputKey(_GLFWwindow* window, int key, int action);
/*! @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, 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);
/*! @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, int x, int y);
/*! @brief Notifies shared code of a cursor enter/leave event.
* @param[in] window The window that received the event.
* @param[in] entered @c GL_TRUE if the cursor entered the client area of the
* window, or @c 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 @c 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] extension The extension to search for.
* @return @c GL_TRUE if the extension was found, or @c 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 Checks and reads back properties from the current context.
* @return @c GL_TRUE if successful, or @c GL_FALSE if the context is unusable.
* @ingroup utility
*/
GLboolean _glfwRefreshContextParams(void);
/*! @brief Checks whether the desired context properties are valid.
* @param[in] wndconfig The context properties to check.
* @return @c GL_TRUE if the context properties are valid, or @c 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 properties.
* @return @c GL_TRUE if the context fulfils the hard constraints, or @c
* GL_FALSE otherwise.
* @ingroup utility
*/
GLboolean _glfwIsValidContext(_GLFWwndconfig* wndconfig);
/*! @ingroup utility
*/
_GLFWmonitor* _glfwCreateMonitor(const char* name,
GLboolean primary,
int widthMM, int heightMM,
int x, int y);
/*! @ingroup utility
*/
void _glfwDestroyMonitor(_GLFWmonitor* monitor);
/*! @ingroup utility
*/
void _glfwDestroyMonitors(void);
#endif // _internal_h_
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