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A multi-platform library for OpenGL, OpenGL ES, Vulkan, window and input
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glfw/src/x11_init.c

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//========================================================================
// GLFW - An OpenGL library
// Platform: X11/GLX
// 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.
//
//========================================================================
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//========================================================================
// Dynamically load libraries
//========================================================================
static void initLibraries(void)
{
#ifdef _GLFW_DLOPEN_LIBGL
int i;
char* libGL_names[ ] =
{
"libGL.so",
"libGL.so.1",
"/usr/lib/libGL.so",
"/usr/lib/libGL.so.1",
NULL
};
_glfwLibrary.X11.libGL = NULL;
for (i = 0; libGL_names[i] != NULL; i++)
{
_glfwLibrary.X11.libGL = dlopen(libGL_names[i], RTLD_LAZY | RTLD_GLOBAL);
if (_glfwLibrary.X11.libGL)
break;
}
#endif
}
//========================================================================
// Translate an X11 key code to a GLFW key code.
//========================================================================
static int keyCodeToGLFWKeyCode(int keyCode)
{
int keySym;
// Valid key code range is [8,255], according to the XLib manual
if (keyCode < 8 || keyCode > 255)
return -1;
// Try secondary keysym, for numeric keypad keys
// Note: This way we always force "NumLock = ON", which is intentional
// since the returned key code should correspond to a physical
// location.
keySym = XKeycodeToKeysym(_glfwLibrary.X11.display, keyCode, 1);
switch (keySym)
{
case XK_KP_0: return GLFW_KEY_KP_0;
case XK_KP_1: return GLFW_KEY_KP_1;
case XK_KP_2: return GLFW_KEY_KP_2;
case XK_KP_3: return GLFW_KEY_KP_3;
case XK_KP_4: return GLFW_KEY_KP_4;
case XK_KP_5: return GLFW_KEY_KP_5;
case XK_KP_6: return GLFW_KEY_KP_6;
case XK_KP_7: return GLFW_KEY_KP_7;
case XK_KP_8: return GLFW_KEY_KP_8;
case XK_KP_9: return GLFW_KEY_KP_9;
case XK_KP_Separator:
case XK_KP_Decimal: return GLFW_KEY_KP_DECIMAL;
case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
default: break;
}
// Now try pimary keysym for function keys (non-printable keys). These
// should not be layout dependent (i.e. US layout and international
// layouts should give the same result).
keySym = XKeycodeToKeysym(_glfwLibrary.X11.display, keyCode, 0);
switch (keySym)
{
case XK_Escape: return GLFW_KEY_ESCAPE;
case XK_Tab: return GLFW_KEY_TAB;
case XK_Shift_L: return GLFW_KEY_LEFT_SHIFT;
case XK_Shift_R: return GLFW_KEY_RIGHT_SHIFT;
case XK_Control_L: return GLFW_KEY_LEFT_CONTROL;
case XK_Control_R: return GLFW_KEY_RIGHT_CONTROL;
case XK_Meta_L:
case XK_Alt_L: return GLFW_KEY_LEFT_ALT;
case XK_Mode_switch: // Mapped to Alt_R on many keyboards
case XK_ISO_Level3_Shift: // AltGr on at least some machines
case XK_Meta_R:
case XK_Alt_R: return GLFW_KEY_RIGHT_ALT;
case XK_Super_L: return GLFW_KEY_LEFT_SUPER;
case XK_Super_R: return GLFW_KEY_RIGHT_SUPER;
case XK_Menu: return GLFW_KEY_MENU;
case XK_Num_Lock: return GLFW_KEY_NUM_LOCK;
case XK_Caps_Lock: return GLFW_KEY_CAPS_LOCK;
case XK_Scroll_Lock: return GLFW_KEY_SCROLL_LOCK;
case XK_Pause: return GLFW_KEY_PAUSE;
case XK_Delete: return GLFW_KEY_DELETE;
case XK_BackSpace: return GLFW_KEY_BACKSPACE;
case XK_Return: return GLFW_KEY_ENTER;
case XK_Home: return GLFW_KEY_HOME;
case XK_End: return GLFW_KEY_END;
case XK_Page_Up: return GLFW_KEY_PAGE_UP;
case XK_Page_Down: return GLFW_KEY_PAGE_DOWN;
case XK_Insert: return GLFW_KEY_INSERT;
case XK_Left: return GLFW_KEY_LEFT;
case XK_Right: return GLFW_KEY_RIGHT;
case XK_Down: return GLFW_KEY_DOWN;
case XK_Up: return GLFW_KEY_UP;
case XK_F1: return GLFW_KEY_F1;
case XK_F2: return GLFW_KEY_F2;
case XK_F3: return GLFW_KEY_F3;
case XK_F4: return GLFW_KEY_F4;
case XK_F5: return GLFW_KEY_F5;
case XK_F6: return GLFW_KEY_F6;
case XK_F7: return GLFW_KEY_F7;
case XK_F8: return GLFW_KEY_F8;
case XK_F9: return GLFW_KEY_F9;
case XK_F10: return GLFW_KEY_F10;
case XK_F11: return GLFW_KEY_F11;
case XK_F12: return GLFW_KEY_F12;
case XK_F13: return GLFW_KEY_F13;
case XK_F14: return GLFW_KEY_F14;
case XK_F15: return GLFW_KEY_F15;
case XK_F16: return GLFW_KEY_F16;
case XK_F17: return GLFW_KEY_F17;
case XK_F18: return GLFW_KEY_F18;
case XK_F19: return GLFW_KEY_F19;
case XK_F20: return GLFW_KEY_F20;
case XK_F21: return GLFW_KEY_F21;
case XK_F22: return GLFW_KEY_F22;
case XK_F23: return GLFW_KEY_F23;
case XK_F24: return GLFW_KEY_F24;
case XK_F25: return GLFW_KEY_F25;
// Numeric keypad
case XK_KP_Divide: return GLFW_KEY_KP_DIVIDE;
case XK_KP_Multiply: return GLFW_KEY_KP_MULTIPLY;
case XK_KP_Subtract: return GLFW_KEY_KP_SUBTRACT;
case XK_KP_Add: return GLFW_KEY_KP_ADD;
// These should have been detected in secondary keysym test above!
case XK_KP_Insert: return GLFW_KEY_KP_0;
case XK_KP_End: return GLFW_KEY_KP_1;
case XK_KP_Down: return GLFW_KEY_KP_2;
case XK_KP_Page_Down: return GLFW_KEY_KP_3;
case XK_KP_Left: return GLFW_KEY_KP_4;
case XK_KP_Right: return GLFW_KEY_KP_6;
case XK_KP_Home: return GLFW_KEY_KP_7;
case XK_KP_Up: return GLFW_KEY_KP_8;
case XK_KP_Page_Up: return GLFW_KEY_KP_9;
case XK_KP_Delete: return GLFW_KEY_KP_DECIMAL;
case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
// Last resort: Check for printable keys (should not happen if the XKB
// extension is available). This will give a layout dependent mapping
// (which is wrong, and we may miss some keys, especially on non-US
// keyboards), but it's better than nothing...
case XK_a: return GLFW_KEY_A;
case XK_b: return GLFW_KEY_B;
case XK_c: return GLFW_KEY_C;
case XK_d: return GLFW_KEY_D;
case XK_e: return GLFW_KEY_E;
case XK_f: return GLFW_KEY_F;
case XK_g: return GLFW_KEY_G;
case XK_h: return GLFW_KEY_H;
case XK_i: return GLFW_KEY_I;
case XK_j: return GLFW_KEY_J;
case XK_k: return GLFW_KEY_K;
case XK_l: return GLFW_KEY_L;
case XK_m: return GLFW_KEY_M;
case XK_n: return GLFW_KEY_N;
case XK_o: return GLFW_KEY_O;
case XK_p: return GLFW_KEY_P;
case XK_q: return GLFW_KEY_Q;
case XK_r: return GLFW_KEY_R;
case XK_s: return GLFW_KEY_S;
case XK_t: return GLFW_KEY_T;
case XK_u: return GLFW_KEY_U;
case XK_v: return GLFW_KEY_V;
case XK_w: return GLFW_KEY_W;
case XK_x: return GLFW_KEY_X;
case XK_y: return GLFW_KEY_Y;
case XK_z: return GLFW_KEY_Z;
case XK_1: return GLFW_KEY_1;
case XK_2: return GLFW_KEY_2;
case XK_3: return GLFW_KEY_3;
case XK_4: return GLFW_KEY_4;
case XK_5: return GLFW_KEY_5;
case XK_6: return GLFW_KEY_6;
case XK_7: return GLFW_KEY_7;
case XK_8: return GLFW_KEY_8;
case XK_9: return GLFW_KEY_9;
case XK_0: return GLFW_KEY_0;
case XK_space: return GLFW_KEY_SPACE;
case XK_minus: return GLFW_KEY_MINUS;
case XK_equal: return GLFW_KEY_EQUAL;
case XK_bracketleft: return GLFW_KEY_LEFT_BRACKET;
case XK_bracketright: return GLFW_KEY_RIGHT_BRACKET;
case XK_backslash: return GLFW_KEY_BACKSLASH;
case XK_semicolon: return GLFW_KEY_SEMICOLON;
case XK_apostrophe: return GLFW_KEY_APOSTROPHE;
case XK_grave: return GLFW_KEY_GRAVE_ACCENT;
case XK_comma: return GLFW_KEY_COMMA;
case XK_period: return GLFW_KEY_PERIOD;
case XK_slash: return GLFW_KEY_SLASH;
case XK_less: return GLFW_KEY_WORLD_1; // At least in some layouts...
default: break;
}
// No matching translation was found, so return -1
return -1;
}
//========================================================================
// Update the key code LUT
//========================================================================
static void updateKeyCodeLUT(void)
{
int keyCode;
// Clear the LUT
for (keyCode = 0; keyCode < 256; ++keyCode)
{
_glfwLibrary.X11.keyCodeLUT[keyCode] = -1;
}
#if defined(_GLFW_HAS_XKB)
// If the Xkb extension is available, use it to determine physical key
// locations independently of the current keyboard layout
if (_glfwLibrary.X11.Xkb.available)
{
int i, keyCodeGLFW;
char name[XkbKeyNameLength+1];
XkbDescPtr descr;
// Get keyboard description
descr = XkbGetKeyboard(_glfwLibrary.X11.display,
XkbAllComponentsMask,
XkbUseCoreKbd);
// Find the X11 key code -> GLFW key code mapping
for (keyCode = descr->min_key_code; keyCode <= descr->max_key_code; ++keyCode)
{
// Get the key name
for (i = 0; i < XkbKeyNameLength; ++i)
{
name[i] = descr->names->keys[keyCode].name[i];
}
name[XkbKeyNameLength] = 0;
// Map the key name to a GLFW key code. Note: We only map printable
// keys here, and we use the US keyboard layout. The rest of the
// keys (function keys) are mapped using traditional KeySym
// translations.
if (strcmp(name, "TLDE") == 0) keyCodeGLFW = GLFW_KEY_GRAVE_ACCENT;
else if (strcmp(name, "AE01") == 0) keyCodeGLFW = GLFW_KEY_1;
else if (strcmp(name, "AE02") == 0) keyCodeGLFW = GLFW_KEY_2;
else if (strcmp(name, "AE03") == 0) keyCodeGLFW = GLFW_KEY_3;
else if (strcmp(name, "AE04") == 0) keyCodeGLFW = GLFW_KEY_4;
else if (strcmp(name, "AE05") == 0) keyCodeGLFW = GLFW_KEY_5;
else if (strcmp(name, "AE06") == 0) keyCodeGLFW = GLFW_KEY_6;
else if (strcmp(name, "AE07") == 0) keyCodeGLFW = GLFW_KEY_7;
else if (strcmp(name, "AE08") == 0) keyCodeGLFW = GLFW_KEY_8;
else if (strcmp(name, "AE09") == 0) keyCodeGLFW = GLFW_KEY_9;
else if (strcmp(name, "AE10") == 0) keyCodeGLFW = GLFW_KEY_0;
else if (strcmp(name, "AE11") == 0) keyCodeGLFW = GLFW_KEY_MINUS;
else if (strcmp(name, "AE12") == 0) keyCodeGLFW = GLFW_KEY_EQUAL;
else if (strcmp(name, "AD01") == 0) keyCodeGLFW = GLFW_KEY_Q;
else if (strcmp(name, "AD02") == 0) keyCodeGLFW = GLFW_KEY_W;
else if (strcmp(name, "AD03") == 0) keyCodeGLFW = GLFW_KEY_E;
else if (strcmp(name, "AD04") == 0) keyCodeGLFW = GLFW_KEY_R;
else if (strcmp(name, "AD05") == 0) keyCodeGLFW = GLFW_KEY_T;
else if (strcmp(name, "AD06") == 0) keyCodeGLFW = GLFW_KEY_Y;
else if (strcmp(name, "AD07") == 0) keyCodeGLFW = GLFW_KEY_U;
else if (strcmp(name, "AD08") == 0) keyCodeGLFW = GLFW_KEY_I;
else if (strcmp(name, "AD09") == 0) keyCodeGLFW = GLFW_KEY_O;
else if (strcmp(name, "AD10") == 0) keyCodeGLFW = GLFW_KEY_P;
else if (strcmp(name, "AD11") == 0) keyCodeGLFW = GLFW_KEY_LEFT_BRACKET;
else if (strcmp(name, "AD12") == 0) keyCodeGLFW = GLFW_KEY_RIGHT_BRACKET;
else if (strcmp(name, "AC01") == 0) keyCodeGLFW = GLFW_KEY_A;
else if (strcmp(name, "AC02") == 0) keyCodeGLFW = GLFW_KEY_S;
else if (strcmp(name, "AC03") == 0) keyCodeGLFW = GLFW_KEY_D;
else if (strcmp(name, "AC04") == 0) keyCodeGLFW = GLFW_KEY_F;
else if (strcmp(name, "AC05") == 0) keyCodeGLFW = GLFW_KEY_G;
else if (strcmp(name, "AC06") == 0) keyCodeGLFW = GLFW_KEY_H;
else if (strcmp(name, "AC07") == 0) keyCodeGLFW = GLFW_KEY_J;
else if (strcmp(name, "AC08") == 0) keyCodeGLFW = GLFW_KEY_K;
else if (strcmp(name, "AC09") == 0) keyCodeGLFW = GLFW_KEY_L;
else if (strcmp(name, "AC10") == 0) keyCodeGLFW = GLFW_KEY_SEMICOLON;
else if (strcmp(name, "AC11") == 0) keyCodeGLFW = GLFW_KEY_APOSTROPHE;
else if (strcmp(name, "AB01") == 0) keyCodeGLFW = GLFW_KEY_Z;
else if (strcmp(name, "AB02") == 0) keyCodeGLFW = GLFW_KEY_X;
else if (strcmp(name, "AB03") == 0) keyCodeGLFW = GLFW_KEY_C;
else if (strcmp(name, "AB04") == 0) keyCodeGLFW = GLFW_KEY_V;
else if (strcmp(name, "AB05") == 0) keyCodeGLFW = GLFW_KEY_B;
else if (strcmp(name, "AB06") == 0) keyCodeGLFW = GLFW_KEY_N;
else if (strcmp(name, "AB07") == 0) keyCodeGLFW = GLFW_KEY_M;
else if (strcmp(name, "AB08") == 0) keyCodeGLFW = GLFW_KEY_COMMA;
else if (strcmp(name, "AB09") == 0) keyCodeGLFW = GLFW_KEY_PERIOD;
else if (strcmp(name, "AB10") == 0) keyCodeGLFW = GLFW_KEY_SLASH;
else if (strcmp(name, "BKSL") == 0) keyCodeGLFW = GLFW_KEY_BACKSLASH;
else if (strcmp(name, "LSGT") == 0) keyCodeGLFW = GLFW_KEY_WORLD_1;
else keyCodeGLFW = -1;
// Update the key code LUT
if ((keyCode >= 0) && (keyCode < 256))
{
_glfwLibrary.X11.keyCodeLUT[keyCode] = keyCodeGLFW;
}
}
// Free the keyboard description
XkbFreeKeyboard(descr, 0, True);
}
#endif /* _GLFW_HAS_XKB */
// Translate the un-translated key codes using traditional X11 KeySym
// lookups
for (keyCode = 0; keyCode < 256; ++keyCode)
{
if (_glfwLibrary.X11.keyCodeLUT[keyCode] < 0)
{
_glfwLibrary.X11.keyCodeLUT[keyCode] =
keyCodeToGLFWKeyCode(keyCode);
}
}
}
//========================================================================
// Initialize X11 display and look for supported X11 extensions
//========================================================================
static GLboolean initDisplay(void)
{
_glfwLibrary.X11.display = XOpenDisplay(0);
if (!_glfwLibrary.X11.display)
{
_glfwSetError(GLFW_OPENGL_UNAVAILABLE, "X11/GLX: Failed to open X display");
return GL_FALSE;
}
// As the API currently doesn't understand multiple display devices, we hard-code
// this choice and hope for the best
_glfwLibrary.X11.screen = DefaultScreen(_glfwLibrary.X11.display);
_glfwLibrary.X11.root = RootWindow(_glfwLibrary.X11.display,
_glfwLibrary.X11.screen);
// Check for XF86VidMode extension
#ifdef _GLFW_HAS_XF86VIDMODE
_glfwLibrary.X11.VidMode.available =
XF86VidModeQueryExtension(_glfwLibrary.X11.display,
&_glfwLibrary.X11.VidMode.eventBase,
&_glfwLibrary.X11.VidMode.errorBase);
#else
_glfwLibrary.X11.VidMode.available = GL_FALSE;
#endif /*_GLFW_HAS_XF86VIDMODE*/
// Check for XRandR extension
#ifdef _GLFW_HAS_XRANDR
_glfwLibrary.X11.RandR.available =
XRRQueryExtension(_glfwLibrary.X11.display,
&_glfwLibrary.X11.RandR.eventBase,
&_glfwLibrary.X11.RandR.errorBase);
if (_glfwLibrary.X11.RandR.available)
{
if (!XRRQueryVersion(_glfwLibrary.X11.display,
&_glfwLibrary.X11.RandR.majorVersion,
&_glfwLibrary.X11.RandR.minorVersion))
{
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/GLX: Failed to query RandR version");
return GL_FALSE;
}
}
#else
_glfwLibrary.X11.RandR.available = GL_FALSE;
#endif /*_GLFW_HAS_XRANDR*/
// Check if GLX is supported on this display
if (!glXQueryExtension(_glfwLibrary.X11.display, NULL, NULL))
{
_glfwSetError(GLFW_OPENGL_UNAVAILABLE, "X11/GLX: GLX supported not found");
return GL_FALSE;
}
if (!glXQueryVersion(_glfwLibrary.X11.display,
&_glfwLibrary.X11.glxMajor,
&_glfwLibrary.X11.glxMinor))
{
_glfwSetError(GLFW_OPENGL_UNAVAILABLE,
"X11/GLX: Failed to query GLX version");
return GL_FALSE;
}
// Check if Xkb is supported on this display
#if defined(_GLFW_HAS_XKB)
_glfwLibrary.X11.Xkb.majorVersion = 1;
_glfwLibrary.X11.Xkb.minorVersion = 0;
_glfwLibrary.X11.Xkb.available =
XkbQueryExtension(_glfwLibrary.X11.display,
&_glfwLibrary.X11.Xkb.majorOpcode,
&_glfwLibrary.X11.Xkb.eventBase,
&_glfwLibrary.X11.Xkb.errorBase,
&_glfwLibrary.X11.Xkb.majorVersion,
&_glfwLibrary.X11.Xkb.minorVersion);
#else
_glfwLibrary.X11.Xkb.available = GL_FALSE;
#endif /* _GLFW_HAS_XKB */
// Update the key code LUT
// FIXME: We should listen to XkbMapNotify events to track changes to
// the keyboard mapping.
updateKeyCodeLUT();
// Find or create clipboard atoms
_glfwLibrary.X11.selection.atoms.clipboard[_GLFW_CLIPBOARD_ATOM_PRIMARY] =
XA_PRIMARY;
_glfwLibrary.X11.selection.atoms.clipboard[_GLFW_CLIPBOARD_ATOM_CLIPBOARD] =
XInternAtom(_glfwLibrary.X11.display, "CLIPBOARD", False);
_glfwLibrary.X11.selection.atoms.clipboard[_GLFW_CLIPBOARD_ATOM_SECONDARY] =
XA_SECONDARY;
// Find or create selection atoms
_glfwLibrary.X11.selection.atoms.string[_GLFW_STRING_ATOM_UTF8] =
XInternAtom(_glfwLibrary.X11.display, "UTF8_STRING", False);
_glfwLibrary.X11.selection.atoms.string[_GLFW_STRING_ATOM_COMPOUND] =
XInternAtom(_glfwLibrary.X11.display, "COMPOUND_STRING", False);
_glfwLibrary.X11.selection.atoms.string[_GLFW_STRING_ATOM_STRING] = XA_STRING;
return GL_TRUE;
}
//========================================================================
// Detect gamma ramp support and save original gamma ramp, if available
//========================================================================
static void initGammaRamp(void)
{
#ifdef _GLFW_HAS_XRANDR
// RandR gamma support is only available with version 1.2 and above
if (_glfwLibrary.X11.RandR.available &&
(_glfwLibrary.X11.RandR.majorVersion > 1 ||
_glfwLibrary.X11.RandR.majorVersion == 1 &&
_glfwLibrary.X11.RandR.minorVersion >= 2))
{
// FIXME: Assumes that all monitors have the same size gamma tables
// This is reasonable as I suspect the that if they did differ, it
// would imply that setting the gamma size to an arbitary size is
// possible as well.
XRRScreenResources* rr = XRRGetScreenResources(_glfwLibrary.X11.display,
_glfwLibrary.X11.root);
_glfwLibrary.originalRampSize = XRRGetCrtcGammaSize(_glfwLibrary.X11.display,
rr->crtcs[0]);
if (!_glfwLibrary.originalRampSize)
{
// This is probably Nvidia RandR with broken gamma support
// Flag it as useless and try Xf86VidMode below, if available
_glfwLibrary.X11.RandR.gammaBroken = GL_TRUE;
fprintf(stderr,
"Ignoring broken nVidia implementation of RandR 1.2+ gamma\n");
}
XRRFreeScreenResources(rr);
}
#endif /*_GLFW_HAS_XRANDR*/
#if defined(_GLFW_HAS_XF86VIDMODE)
if (_glfwLibrary.X11.VidMode.available &&
!_glfwLibrary.originalRampSize)
{
// Get the gamma size using XF86VidMode
XF86VidModeGetGammaRampSize(_glfwLibrary.X11.display,
_glfwLibrary.X11.screen,
&_glfwLibrary.originalRampSize);
}
#endif /*_GLFW_HAS_XF86VIDMODE*/
if (!_glfwLibrary.originalRampSize)
fprintf(stderr, "No supported gamma ramp API found\n");
// Save the original gamma ramp
_glfwPlatformGetGammaRamp(&_glfwLibrary.originalRamp);
_glfwLibrary.currentRamp = _glfwLibrary.originalRamp;
}
//========================================================================
// Create a blank cursor (for locked mouse mode)
//========================================================================
static Cursor createNULLCursor(void)
{
Pixmap cursormask;
XGCValues xgc;
GC gc;
XColor col;
Cursor cursor;
// TODO: Add error checks
cursormask = XCreatePixmap(_glfwLibrary.X11.display,
_glfwLibrary.X11.root,
1, 1, 1);
xgc.function = GXclear;
gc = XCreateGC(_glfwLibrary.X11.display, cursormask, GCFunction, &xgc);
XFillRectangle(_glfwLibrary.X11.display, cursormask, gc, 0, 0, 1, 1);
col.pixel = 0;
col.red = 0;
col.flags = 4;
cursor = XCreatePixmapCursor(_glfwLibrary.X11.display,
cursormask, cursormask,
&col, &col, 0, 0);
XFreePixmap(_glfwLibrary.X11.display, cursormask);
XFreeGC(_glfwLibrary.X11.display, gc);
return cursor;
}
//========================================================================
// Terminate X11 display
//========================================================================
static void terminateDisplay(void)
{
if (_glfwLibrary.originalRampSize)
_glfwPlatformSetGammaRamp(&_glfwLibrary.originalRamp);
if (_glfwLibrary.X11.display)
{
XCloseDisplay(_glfwLibrary.X11.display);
_glfwLibrary.X11.display = NULL;
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
//========================================================================
// Initialize various GLFW state
//========================================================================
int _glfwPlatformInit(void)
{
if (!initDisplay())
return GL_FALSE;
initGammaRamp();
_glfwLibrary.X11.cursor = createNULLCursor();
// Try to load libGL.so if necessary
initLibraries();
_glfwInitJoysticks();
// Start the timer
_glfwInitTimer();
return GL_TRUE;
}
//========================================================================
// Close window and shut down library
//========================================================================
int _glfwPlatformTerminate(void)
{
if (_glfwLibrary.X11.cursor)
{
XFreeCursor(_glfwLibrary.X11.display, _glfwLibrary.X11.cursor);
_glfwLibrary.X11.cursor = (Cursor) 0;
}
terminateDisplay();
_glfwTerminateJoysticks();
// Unload libGL.so if necessary
#ifdef _GLFW_DLOPEN_LIBGL
if (_glfwLibrary.X11.libGL != NULL)
{
dlclose(_glfwLibrary.X11.libGL);
_glfwLibrary.X11.libGL = NULL;
}
#endif
// Free clipboard memory
if (_glfwLibrary.X11.selection.clipboard.string)
free(_glfwLibrary.X11.selection.clipboard.string);
return GL_TRUE;
}
//========================================================================
// Get the GLFW version string
//========================================================================
const char* _glfwPlatformGetVersionString(void)
{
const char* version = "GLFW " _GLFW_VERSION_FULL
#if defined(_GLFW_HAS_XRANDR)
" XRandR"
#endif
#if defined(_GLFW_HAS_XF86VIDMODE)
" Xf86VidMode"
#endif
#if !defined(_GLFW_HAS_XRANDR) && !defined(_GLFW_HAS_XF86VIDMODE)
" no-mode-switching-support"
#endif
#if defined(_GLFW_HAS_GLXGETPROCADDRESS)
" glXGetProcAddress"
#elif defined(_GLFW_HAS_GLXGETPROCADDRESSARB)
" glXGetProcAddressARB"
#elif defined(_GLFW_HAS_GLXGETPROCADDRESSEXT)
" glXGetProcAddressEXT"
#elif defined(_GLFW_DLOPEN_LIBGL)
" dlsym(libGL)"
#else
" no-extension-support"
#endif
#if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
" clock_gettime"
#endif
#if defined(_GLFW_USE_LINUX_JOYSTICKS)
" Linux-joystick-API"
#else
" no-joystick-support"
#endif
;
return version;
}