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glfw/src/x11_init.c
Camilla Löwy 399c082033 X11: Fix content scale fallback value on KDE 
KDE sometimes removes the Xft.dpi resource when it would be set to the
X11 default value of 96, causing GLFW to fall back to a value calculated
from the core display sizes in pixels and mm in a desktop environment
that supports Xft.dpi.

This moves to a hardcoded fallback value of 96 on the assumption that
there are more people running KDE with 96 DPI than there are people
running desktop environments that do not support Xft.dpi.

All of this is terrible please send help.

Fixes #1578.

(cherry picked from commit 75294462b3)
2019-11-05 18:03:11 +01:00

1107 lines
42 KiB
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//========================================================================
// GLFW 3.3 X11 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.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.
//
//========================================================================
// It is fine to use C99 in this file because it will not be built with VS
//========================================================================
#include "internal.h"
#include <X11/Xresource.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <stdio.h>
#include <locale.h>
// Translate an X11 key code to a GLFW key code.
//
static int translateKeyCode(int scancode)
{
int keySym;
// Valid key code range is [8,255], according to the Xlib manual
if (scancode < 8 || scancode > 255)
return GLFW_KEY_UNKNOWN;
if (_glfw.x11.xkb.available)
{
// 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 = XkbKeycodeToKeysym(_glfw.x11.display, scancode, _glfw.x11.xkb.group, 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 primary keysym for function keys (non-printable keys)
// These should not depend on the current keyboard layout
keySym = XkbKeycodeToKeysym(_glfw.x11.display, scancode, _glfw.x11.xkb.group, 0);
}
else
{
int dummy;
KeySym* keySyms;
keySyms = XGetKeyboardMapping(_glfw.x11.display, scancode, 1, &dummy);
keySym = keySyms[0];
XFree(keySyms);
}
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_Print: return GLFW_KEY_PRINT_SCREEN;
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
return GLFW_KEY_UNKNOWN;
}
// Create key code translation tables
//
static void createKeyTables(void)
{
int scancode, key;
memset(_glfw.x11.keycodes, -1, sizeof(_glfw.x11.keycodes));
memset(_glfw.x11.scancodes, -1, sizeof(_glfw.x11.scancodes));
if (_glfw.x11.xkb.available)
{
// Use XKB to determine physical key locations independently of the
// current keyboard layout
char name[XkbKeyNameLength + 1];
XkbDescPtr desc = XkbGetMap(_glfw.x11.display, 0, XkbUseCoreKbd);
XkbGetNames(_glfw.x11.display, XkbKeyNamesMask, desc);
// Find the X11 key code -> GLFW key code mapping
for (scancode = desc->min_key_code; scancode <= desc->max_key_code; scancode++)
{
memcpy(name, desc->names->keys[scancode].name, XkbKeyNameLength);
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) key = GLFW_KEY_GRAVE_ACCENT;
else if (strcmp(name, "AE01") == 0) key = GLFW_KEY_1;
else if (strcmp(name, "AE02") == 0) key = GLFW_KEY_2;
else if (strcmp(name, "AE03") == 0) key = GLFW_KEY_3;
else if (strcmp(name, "AE04") == 0) key = GLFW_KEY_4;
else if (strcmp(name, "AE05") == 0) key = GLFW_KEY_5;
else if (strcmp(name, "AE06") == 0) key = GLFW_KEY_6;
else if (strcmp(name, "AE07") == 0) key = GLFW_KEY_7;
else if (strcmp(name, "AE08") == 0) key = GLFW_KEY_8;
else if (strcmp(name, "AE09") == 0) key = GLFW_KEY_9;
else if (strcmp(name, "AE10") == 0) key = GLFW_KEY_0;
else if (strcmp(name, "AE11") == 0) key = GLFW_KEY_MINUS;
else if (strcmp(name, "AE12") == 0) key = GLFW_KEY_EQUAL;
else if (strcmp(name, "AD01") == 0) key = GLFW_KEY_Q;
else if (strcmp(name, "AD02") == 0) key = GLFW_KEY_W;
else if (strcmp(name, "AD03") == 0) key = GLFW_KEY_E;
else if (strcmp(name, "AD04") == 0) key = GLFW_KEY_R;
else if (strcmp(name, "AD05") == 0) key = GLFW_KEY_T;
else if (strcmp(name, "AD06") == 0) key = GLFW_KEY_Y;
else if (strcmp(name, "AD07") == 0) key = GLFW_KEY_U;
else if (strcmp(name, "AD08") == 0) key = GLFW_KEY_I;
else if (strcmp(name, "AD09") == 0) key = GLFW_KEY_O;
else if (strcmp(name, "AD10") == 0) key = GLFW_KEY_P;
else if (strcmp(name, "AD11") == 0) key = GLFW_KEY_LEFT_BRACKET;
else if (strcmp(name, "AD12") == 0) key = GLFW_KEY_RIGHT_BRACKET;
else if (strcmp(name, "AC01") == 0) key = GLFW_KEY_A;
else if (strcmp(name, "AC02") == 0) key = GLFW_KEY_S;
else if (strcmp(name, "AC03") == 0) key = GLFW_KEY_D;
else if (strcmp(name, "AC04") == 0) key = GLFW_KEY_F;
else if (strcmp(name, "AC05") == 0) key = GLFW_KEY_G;
else if (strcmp(name, "AC06") == 0) key = GLFW_KEY_H;
else if (strcmp(name, "AC07") == 0) key = GLFW_KEY_J;
else if (strcmp(name, "AC08") == 0) key = GLFW_KEY_K;
else if (strcmp(name, "AC09") == 0) key = GLFW_KEY_L;
else if (strcmp(name, "AC10") == 0) key = GLFW_KEY_SEMICOLON;
else if (strcmp(name, "AC11") == 0) key = GLFW_KEY_APOSTROPHE;
else if (strcmp(name, "AB01") == 0) key = GLFW_KEY_Z;
else if (strcmp(name, "AB02") == 0) key = GLFW_KEY_X;
else if (strcmp(name, "AB03") == 0) key = GLFW_KEY_C;
else if (strcmp(name, "AB04") == 0) key = GLFW_KEY_V;
else if (strcmp(name, "AB05") == 0) key = GLFW_KEY_B;
else if (strcmp(name, "AB06") == 0) key = GLFW_KEY_N;
else if (strcmp(name, "AB07") == 0) key = GLFW_KEY_M;
else if (strcmp(name, "AB08") == 0) key = GLFW_KEY_COMMA;
else if (strcmp(name, "AB09") == 0) key = GLFW_KEY_PERIOD;
else if (strcmp(name, "AB10") == 0) key = GLFW_KEY_SLASH;
else if (strcmp(name, "BKSL") == 0) key = GLFW_KEY_BACKSLASH;
else if (strcmp(name, "LSGT") == 0) key = GLFW_KEY_WORLD_1;
else key = GLFW_KEY_UNKNOWN;
if ((scancode >= 0) && (scancode < 256))
_glfw.x11.keycodes[scancode] = key;
}
XkbFreeNames(desc, XkbKeyNamesMask, True);
XkbFreeKeyboard(desc, 0, True);
}
for (scancode = 0; scancode < 256; scancode++)
{
// Translate the un-translated key codes using traditional X11 KeySym
// lookups
if (_glfw.x11.keycodes[scancode] < 0)
_glfw.x11.keycodes[scancode] = translateKeyCode(scancode);
// Store the reverse translation for faster key name lookup
if (_glfw.x11.keycodes[scancode] > 0)
_glfw.x11.scancodes[_glfw.x11.keycodes[scancode]] = scancode;
}
}
// Check whether the IM has a usable style
//
static GLFWbool hasUsableInputMethodStyle(void)
{
GLFWbool found = GLFW_FALSE;
XIMStyles* styles = NULL;
if (XGetIMValues(_glfw.x11.im, XNQueryInputStyle, &styles, NULL) != NULL)
return GLFW_FALSE;
for (unsigned int i = 0; i < styles->count_styles; i++)
{
if (styles->supported_styles[i] == (XIMPreeditNothing | XIMStatusNothing))
{
found = GLFW_TRUE;
break;
}
}
XFree(styles);
return found;
}
// Check whether the specified atom is supported
//
static Atom getSupportedAtom(Atom* supportedAtoms,
unsigned long atomCount,
const char* atomName)
{
const Atom atom = XInternAtom(_glfw.x11.display, atomName, False);
for (unsigned int i = 0; i < atomCount; i++)
{
if (supportedAtoms[i] == atom)
return atom;
}
return None;
}
// Check whether the running window manager is EWMH-compliant
//
static void detectEWMH(void)
{
// First we read the _NET_SUPPORTING_WM_CHECK property on the root window
Window* windowFromRoot = NULL;
if (!_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.NET_SUPPORTING_WM_CHECK,
XA_WINDOW,
(unsigned char**) &windowFromRoot))
{
return;
}
_glfwGrabErrorHandlerX11();
// If it exists, it should be the XID of a top-level window
// Then we look for the same property on that window
Window* windowFromChild = NULL;
if (!_glfwGetWindowPropertyX11(*windowFromRoot,
_glfw.x11.NET_SUPPORTING_WM_CHECK,
XA_WINDOW,
(unsigned char**) &windowFromChild))
{
XFree(windowFromRoot);
return;
}
_glfwReleaseErrorHandlerX11();
// If the property exists, it should contain the XID of the window
if (*windowFromRoot != *windowFromChild)
{
XFree(windowFromRoot);
XFree(windowFromChild);
return;
}
XFree(windowFromRoot);
XFree(windowFromChild);
// We are now fairly sure that an EWMH-compliant WM is currently running
// We can now start querying the WM about what features it supports by
// looking in the _NET_SUPPORTED property on the root window
// It should contain a list of supported EWMH protocol and state atoms
Atom* supportedAtoms = NULL;
const unsigned long atomCount =
_glfwGetWindowPropertyX11(_glfw.x11.root,
_glfw.x11.NET_SUPPORTED,
XA_ATOM,
(unsigned char**) &supportedAtoms);
// See which of the atoms we support that are supported by the WM
_glfw.x11.NET_WM_STATE =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE");
_glfw.x11.NET_WM_STATE_ABOVE =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_ABOVE");
_glfw.x11.NET_WM_STATE_FULLSCREEN =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN");
_glfw.x11.NET_WM_STATE_MAXIMIZED_VERT =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_VERT");
_glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_HORZ");
_glfw.x11.NET_WM_STATE_DEMANDS_ATTENTION =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_DEMANDS_ATTENTION");
_glfw.x11.NET_WM_FULLSCREEN_MONITORS =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_FULLSCREEN_MONITORS");
_glfw.x11.NET_WM_WINDOW_TYPE =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE");
_glfw.x11.NET_WM_WINDOW_TYPE_NORMAL =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE_NORMAL");
_glfw.x11.NET_WORKAREA =
getSupportedAtom(supportedAtoms, atomCount, "_NET_WORKAREA");
_glfw.x11.NET_CURRENT_DESKTOP =
getSupportedAtom(supportedAtoms, atomCount, "_NET_CURRENT_DESKTOP");
_glfw.x11.NET_ACTIVE_WINDOW =
getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW");
_glfw.x11.NET_FRAME_EXTENTS =
getSupportedAtom(supportedAtoms, atomCount, "_NET_FRAME_EXTENTS");
_glfw.x11.NET_REQUEST_FRAME_EXTENTS =
getSupportedAtom(supportedAtoms, atomCount, "_NET_REQUEST_FRAME_EXTENTS");
if (supportedAtoms)
XFree(supportedAtoms);
}
// Look for and initialize supported X11 extensions
//
static GLFWbool initExtensions(void)
{
_glfw.x11.vidmode.handle = _glfw_dlopen("libXxf86vm.so.1");
if (_glfw.x11.vidmode.handle)
{
_glfw.x11.vidmode.QueryExtension = (PFN_XF86VidModeQueryExtension)
_glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeQueryExtension");
_glfw.x11.vidmode.GetGammaRamp = (PFN_XF86VidModeGetGammaRamp)
_glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeGetGammaRamp");
_glfw.x11.vidmode.SetGammaRamp = (PFN_XF86VidModeSetGammaRamp)
_glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeSetGammaRamp");
_glfw.x11.vidmode.GetGammaRampSize = (PFN_XF86VidModeGetGammaRampSize)
_glfw_dlsym(_glfw.x11.vidmode.handle, "XF86VidModeGetGammaRampSize");
_glfw.x11.vidmode.available =
XF86VidModeQueryExtension(_glfw.x11.display,
&_glfw.x11.vidmode.eventBase,
&_glfw.x11.vidmode.errorBase);
}
#if defined(__CYGWIN__)
_glfw.x11.xi.handle = _glfw_dlopen("libXi-6.so");
#else
_glfw.x11.xi.handle = _glfw_dlopen("libXi.so.6");
#endif
if (_glfw.x11.xi.handle)
{
_glfw.x11.xi.QueryVersion = (PFN_XIQueryVersion)
_glfw_dlsym(_glfw.x11.xi.handle, "XIQueryVersion");
_glfw.x11.xi.SelectEvents = (PFN_XISelectEvents)
_glfw_dlsym(_glfw.x11.xi.handle, "XISelectEvents");
if (XQueryExtension(_glfw.x11.display,
"XInputExtension",
&_glfw.x11.xi.majorOpcode,
&_glfw.x11.xi.eventBase,
&_glfw.x11.xi.errorBase))
{
_glfw.x11.xi.major = 2;
_glfw.x11.xi.minor = 0;
if (XIQueryVersion(_glfw.x11.display,
&_glfw.x11.xi.major,
&_glfw.x11.xi.minor) == Success)
{
_glfw.x11.xi.available = GLFW_TRUE;
}
}
}
#if defined(__CYGWIN__)
_glfw.x11.randr.handle = _glfw_dlopen("libXrandr-2.so");
#else
_glfw.x11.randr.handle = _glfw_dlopen("libXrandr.so.2");
#endif
if (_glfw.x11.randr.handle)
{
_glfw.x11.randr.AllocGamma = (PFN_XRRAllocGamma)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRAllocGamma");
_glfw.x11.randr.FreeGamma = (PFN_XRRFreeGamma)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeGamma");
_glfw.x11.randr.FreeCrtcInfo = (PFN_XRRFreeCrtcInfo)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeCrtcInfo");
_glfw.x11.randr.FreeGamma = (PFN_XRRFreeGamma)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeGamma");
_glfw.x11.randr.FreeOutputInfo = (PFN_XRRFreeOutputInfo)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeOutputInfo");
_glfw.x11.randr.FreeScreenResources = (PFN_XRRFreeScreenResources)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRFreeScreenResources");
_glfw.x11.randr.GetCrtcGamma = (PFN_XRRGetCrtcGamma)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRGetCrtcGamma");
_glfw.x11.randr.GetCrtcGammaSize = (PFN_XRRGetCrtcGammaSize)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRGetCrtcGammaSize");
_glfw.x11.randr.GetCrtcInfo = (PFN_XRRGetCrtcInfo)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRGetCrtcInfo");
_glfw.x11.randr.GetOutputInfo = (PFN_XRRGetOutputInfo)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRGetOutputInfo");
_glfw.x11.randr.GetOutputPrimary = (PFN_XRRGetOutputPrimary)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRGetOutputPrimary");
_glfw.x11.randr.GetScreenResourcesCurrent = (PFN_XRRGetScreenResourcesCurrent)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRGetScreenResourcesCurrent");
_glfw.x11.randr.QueryExtension = (PFN_XRRQueryExtension)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRQueryExtension");
_glfw.x11.randr.QueryVersion = (PFN_XRRQueryVersion)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRQueryVersion");
_glfw.x11.randr.SelectInput = (PFN_XRRSelectInput)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRSelectInput");
_glfw.x11.randr.SetCrtcConfig = (PFN_XRRSetCrtcConfig)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRSetCrtcConfig");
_glfw.x11.randr.SetCrtcGamma = (PFN_XRRSetCrtcGamma)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRSetCrtcGamma");
_glfw.x11.randr.UpdateConfiguration = (PFN_XRRUpdateConfiguration)
_glfw_dlsym(_glfw.x11.randr.handle, "XRRUpdateConfiguration");
if (XRRQueryExtension(_glfw.x11.display,
&_glfw.x11.randr.eventBase,
&_glfw.x11.randr.errorBase))
{
if (XRRQueryVersion(_glfw.x11.display,
&_glfw.x11.randr.major,
&_glfw.x11.randr.minor))
{
// The GLFW RandR path requires at least version 1.3
if (_glfw.x11.randr.major > 1 || _glfw.x11.randr.minor >= 3)
_glfw.x11.randr.available = GLFW_TRUE;
}
else
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to query RandR version");
}
}
}
if (_glfw.x11.randr.available)
{
XRRScreenResources* sr = XRRGetScreenResourcesCurrent(_glfw.x11.display,
_glfw.x11.root);
if (!sr->ncrtc || !XRRGetCrtcGammaSize(_glfw.x11.display, sr->crtcs[0]))
{
// This is likely an older Nvidia driver with broken gamma support
// Flag it as useless and fall back to xf86vm gamma, if available
_glfw.x11.randr.gammaBroken = GLFW_TRUE;
}
if (!sr->ncrtc)
{
// A system without CRTCs is likely a system with broken RandR
// Disable the RandR monitor path and fall back to core functions
_glfw.x11.randr.monitorBroken = GLFW_TRUE;
}
XRRFreeScreenResources(sr);
}
if (_glfw.x11.randr.available && !_glfw.x11.randr.monitorBroken)
{
XRRSelectInput(_glfw.x11.display, _glfw.x11.root,
RROutputChangeNotifyMask);
}
#if defined(__CYGWIN__)
_glfw.x11.xcursor.handle = _glfw_dlopen("libXcursor-1.so");
#else
_glfw.x11.xcursor.handle = _glfw_dlopen("libXcursor.so.1");
#endif
if (_glfw.x11.xcursor.handle)
{
_glfw.x11.xcursor.ImageCreate = (PFN_XcursorImageCreate)
_glfw_dlsym(_glfw.x11.xcursor.handle, "XcursorImageCreate");
_glfw.x11.xcursor.ImageDestroy = (PFN_XcursorImageDestroy)
_glfw_dlsym(_glfw.x11.xcursor.handle, "XcursorImageDestroy");
_glfw.x11.xcursor.ImageLoadCursor = (PFN_XcursorImageLoadCursor)
_glfw_dlsym(_glfw.x11.xcursor.handle, "XcursorImageLoadCursor");
}
#if defined(__CYGWIN__)
_glfw.x11.xinerama.handle = _glfw_dlopen("libXinerama-1.so");
#else
_glfw.x11.xinerama.handle = _glfw_dlopen("libXinerama.so.1");
#endif
if (_glfw.x11.xinerama.handle)
{
_glfw.x11.xinerama.IsActive = (PFN_XineramaIsActive)
_glfw_dlsym(_glfw.x11.xinerama.handle, "XineramaIsActive");
_glfw.x11.xinerama.QueryExtension = (PFN_XineramaQueryExtension)
_glfw_dlsym(_glfw.x11.xinerama.handle, "XineramaQueryExtension");
_glfw.x11.xinerama.QueryScreens = (PFN_XineramaQueryScreens)
_glfw_dlsym(_glfw.x11.xinerama.handle, "XineramaQueryScreens");
if (XineramaQueryExtension(_glfw.x11.display,
&_glfw.x11.xinerama.major,
&_glfw.x11.xinerama.minor))
{
if (XineramaIsActive(_glfw.x11.display))
_glfw.x11.xinerama.available = GLFW_TRUE;
}
}
_glfw.x11.xkb.major = 1;
_glfw.x11.xkb.minor = 0;
_glfw.x11.xkb.available =
XkbQueryExtension(_glfw.x11.display,
&_glfw.x11.xkb.majorOpcode,
&_glfw.x11.xkb.eventBase,
&_glfw.x11.xkb.errorBase,
&_glfw.x11.xkb.major,
&_glfw.x11.xkb.minor);
if (_glfw.x11.xkb.available)
{
Bool supported;
if (XkbSetDetectableAutoRepeat(_glfw.x11.display, True, &supported))
{
if (supported)
_glfw.x11.xkb.detectable = GLFW_TRUE;
}
_glfw.x11.xkb.group = 0;
XkbStateRec state;
if (XkbGetState(_glfw.x11.display, XkbUseCoreKbd, &state) == Success)
{
XkbSelectEventDetails(_glfw.x11.display, XkbUseCoreKbd, XkbStateNotify, XkbAllStateComponentsMask, XkbGroupStateMask);
_glfw.x11.xkb.group = (unsigned int)state.group;
}
}
#if defined(__CYGWIN__)
_glfw.x11.x11xcb.handle = _glfw_dlopen("libX11-xcb-1.so");
#else
_glfw.x11.x11xcb.handle = _glfw_dlopen("libX11-xcb.so.1");
#endif
if (_glfw.x11.x11xcb.handle)
{
_glfw.x11.x11xcb.GetXCBConnection = (PFN_XGetXCBConnection)
_glfw_dlsym(_glfw.x11.x11xcb.handle, "XGetXCBConnection");
}
#if defined(__CYGWIN__)
_glfw.x11.xrender.handle = _glfw_dlopen("libXrender-1.so");
#else
_glfw.x11.xrender.handle = _glfw_dlopen("libXrender.so.1");
#endif
if (_glfw.x11.xrender.handle)
{
_glfw.x11.xrender.QueryExtension = (PFN_XRenderQueryExtension)
_glfw_dlsym(_glfw.x11.xrender.handle, "XRenderQueryExtension");
_glfw.x11.xrender.QueryVersion = (PFN_XRenderQueryVersion)
_glfw_dlsym(_glfw.x11.xrender.handle, "XRenderQueryVersion");
_glfw.x11.xrender.FindVisualFormat = (PFN_XRenderFindVisualFormat)
_glfw_dlsym(_glfw.x11.xrender.handle, "XRenderFindVisualFormat");
if (XRenderQueryExtension(_glfw.x11.display,
&_glfw.x11.xrender.errorBase,
&_glfw.x11.xrender.eventBase))
{
if (XRenderQueryVersion(_glfw.x11.display,
&_glfw.x11.xrender.major,
&_glfw.x11.xrender.minor))
{
_glfw.x11.xrender.available = GLFW_TRUE;
}
}
}
// Update the key code LUT
// FIXME: We should listen to XkbMapNotify events to track changes to
// the keyboard mapping.
createKeyTables();
// String format atoms
_glfw.x11.NULL_ = XInternAtom(_glfw.x11.display, "NULL", False);
_glfw.x11.UTF8_STRING = XInternAtom(_glfw.x11.display, "UTF8_STRING", False);
_glfw.x11.ATOM_PAIR = XInternAtom(_glfw.x11.display, "ATOM_PAIR", False);
// Custom selection property atom
_glfw.x11.GLFW_SELECTION =
XInternAtom(_glfw.x11.display, "GLFW_SELECTION", False);
// ICCCM standard clipboard atoms
_glfw.x11.TARGETS = XInternAtom(_glfw.x11.display, "TARGETS", False);
_glfw.x11.MULTIPLE = XInternAtom(_glfw.x11.display, "MULTIPLE", False);
_glfw.x11.PRIMARY = XInternAtom(_glfw.x11.display, "PRIMARY", False);
_glfw.x11.INCR = XInternAtom(_glfw.x11.display, "INCR", False);
_glfw.x11.CLIPBOARD = XInternAtom(_glfw.x11.display, "CLIPBOARD", False);
// Clipboard manager atoms
_glfw.x11.CLIPBOARD_MANAGER =
XInternAtom(_glfw.x11.display, "CLIPBOARD_MANAGER", False);
_glfw.x11.SAVE_TARGETS =
XInternAtom(_glfw.x11.display, "SAVE_TARGETS", False);
// Xdnd (drag and drop) atoms
_glfw.x11.XdndAware = XInternAtom(_glfw.x11.display, "XdndAware", False);
_glfw.x11.XdndEnter = XInternAtom(_glfw.x11.display, "XdndEnter", False);
_glfw.x11.XdndPosition = XInternAtom(_glfw.x11.display, "XdndPosition", False);
_glfw.x11.XdndStatus = XInternAtom(_glfw.x11.display, "XdndStatus", False);
_glfw.x11.XdndActionCopy = XInternAtom(_glfw.x11.display, "XdndActionCopy", False);
_glfw.x11.XdndDrop = XInternAtom(_glfw.x11.display, "XdndDrop", False);
_glfw.x11.XdndFinished = XInternAtom(_glfw.x11.display, "XdndFinished", False);
_glfw.x11.XdndSelection = XInternAtom(_glfw.x11.display, "XdndSelection", False);
_glfw.x11.XdndTypeList = XInternAtom(_glfw.x11.display, "XdndTypeList", False);
_glfw.x11.text_uri_list = XInternAtom(_glfw.x11.display, "text/uri-list", False);
// ICCCM, EWMH and Motif window property atoms
// These can be set safely even without WM support
// The EWMH atoms that require WM support are handled in detectEWMH
_glfw.x11.WM_PROTOCOLS =
XInternAtom(_glfw.x11.display, "WM_PROTOCOLS", False);
_glfw.x11.WM_STATE =
XInternAtom(_glfw.x11.display, "WM_STATE", False);
_glfw.x11.WM_DELETE_WINDOW =
XInternAtom(_glfw.x11.display, "WM_DELETE_WINDOW", False);
_glfw.x11.NET_SUPPORTED =
XInternAtom(_glfw.x11.display, "_NET_SUPPORTED", False);
_glfw.x11.NET_SUPPORTING_WM_CHECK =
XInternAtom(_glfw.x11.display, "_NET_SUPPORTING_WM_CHECK", False);
_glfw.x11.NET_WM_ICON =
XInternAtom(_glfw.x11.display, "_NET_WM_ICON", False);
_glfw.x11.NET_WM_PING =
XInternAtom(_glfw.x11.display, "_NET_WM_PING", False);
_glfw.x11.NET_WM_PID =
XInternAtom(_glfw.x11.display, "_NET_WM_PID", False);
_glfw.x11.NET_WM_NAME =
XInternAtom(_glfw.x11.display, "_NET_WM_NAME", False);
_glfw.x11.NET_WM_ICON_NAME =
XInternAtom(_glfw.x11.display, "_NET_WM_ICON_NAME", False);
_glfw.x11.NET_WM_BYPASS_COMPOSITOR =
XInternAtom(_glfw.x11.display, "_NET_WM_BYPASS_COMPOSITOR", False);
_glfw.x11.NET_WM_WINDOW_OPACITY =
XInternAtom(_glfw.x11.display, "_NET_WM_WINDOW_OPACITY", False);
_glfw.x11.MOTIF_WM_HINTS =
XInternAtom(_glfw.x11.display, "_MOTIF_WM_HINTS", False);
// The compositing manager selection name contains the screen number
{
char name[32];
snprintf(name, sizeof(name), "_NET_WM_CM_S%u", _glfw.x11.screen);
_glfw.x11.NET_WM_CM_Sx = XInternAtom(_glfw.x11.display, name, False);
}
// Detect whether an EWMH-conformant window manager is running
detectEWMH();
return GLFW_TRUE;
}
// Retrieve system content scale via folklore heuristics
//
static void getSystemContentScale(float* xscale, float* yscale)
{
// Start by assuming the default X11 DPI
// NOTE: Some desktop environments (KDE) may remove the Xft.dpi field when it
// would be set to 96, so assume that is the case if we cannot find it
float xdpi = 96.f, ydpi = 96.f;
// NOTE: Basing the scale on Xft.dpi where available should provide the most
// consistent user experience (matches Qt, Gtk, etc), although not
// always the most accurate one
char* rms = XResourceManagerString(_glfw.x11.display);
if (rms)
{
XrmDatabase db = XrmGetStringDatabase(rms);
if (db)
{
XrmValue value;
char* type = NULL;
if (XrmGetResource(db, "Xft.dpi", "Xft.Dpi", &type, &value))
{
if (type && strcmp(type, "String") == 0)
xdpi = ydpi = atof(value.addr);
}
XrmDestroyDatabase(db);
}
}
*xscale = xdpi / 96.f;
*yscale = ydpi / 96.f;
}
// Create a blank cursor for hidden and disabled cursor modes
//
static Cursor createHiddenCursor(void)
{
unsigned char pixels[16 * 16 * 4] = { 0 };
GLFWimage image = { 16, 16, pixels };
return _glfwCreateCursorX11(&image, 0, 0);
}
// Create a helper window for IPC
//
static Window createHelperWindow(void)
{
XSetWindowAttributes wa;
wa.event_mask = PropertyChangeMask;
return XCreateWindow(_glfw.x11.display, _glfw.x11.root,
0, 0, 1, 1, 0, 0,
InputOnly,
DefaultVisual(_glfw.x11.display, _glfw.x11.screen),
CWEventMask, &wa);
}
// X error handler
//
static int errorHandler(Display *display, XErrorEvent* event)
{
_glfw.x11.errorCode = event->error_code;
return 0;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Sets the X error handler callback
//
void _glfwGrabErrorHandlerX11(void)
{
_glfw.x11.errorCode = Success;
XSetErrorHandler(errorHandler);
}
// Clears the X error handler callback
//
void _glfwReleaseErrorHandlerX11(void)
{
// Synchronize to make sure all commands are processed
XSync(_glfw.x11.display, False);
XSetErrorHandler(NULL);
}
// Reports the specified error, appending information about the last X error
//
void _glfwInputErrorX11(int error, const char* message)
{
char buffer[_GLFW_MESSAGE_SIZE];
XGetErrorText(_glfw.x11.display, _glfw.x11.errorCode,
buffer, sizeof(buffer));
_glfwInputError(error, "%s: %s", message, buffer);
}
// Creates a native cursor object from the specified image and hotspot
//
Cursor _glfwCreateCursorX11(const GLFWimage* image, int xhot, int yhot)
{
int i;
Cursor cursor;
if (!_glfw.x11.xcursor.handle)
return None;
XcursorImage* native = XcursorImageCreate(image->width, image->height);
if (native == NULL)
return None;
native->xhot = xhot;
native->yhot = yhot;
unsigned char* source = (unsigned char*) image->pixels;
XcursorPixel* target = native->pixels;
for (i = 0; i < image->width * image->height; i++, target++, source += 4)
{
unsigned int alpha = source[3];
*target = (alpha << 24) |
((unsigned char) ((source[0] * alpha) / 255) << 16) |
((unsigned char) ((source[1] * alpha) / 255) << 8) |
((unsigned char) ((source[2] * alpha) / 255) << 0);
}
cursor = XcursorImageLoadCursor(_glfw.x11.display, native);
XcursorImageDestroy(native);
return cursor;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformInit(void)
{
#if !defined(X_HAVE_UTF8_STRING)
// HACK: If the current locale is "C" and the Xlib UTF-8 functions are
// unavailable, apply the environment's locale in the hope that it's
// both available and not "C"
// This is done because the "C" locale breaks wide character input,
// which is what we fall back on when UTF-8 support is missing
if (strcmp(setlocale(LC_CTYPE, NULL), "C") == 0)
setlocale(LC_CTYPE, "");
#endif
XInitThreads();
XrmInitialize();
_glfw.x11.display = XOpenDisplay(NULL);
if (!_glfw.x11.display)
{
const char* display = getenv("DISPLAY");
if (display)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: Failed to open display %s", display);
}
else
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: The DISPLAY environment variable is missing");
}
return GLFW_FALSE;
}
_glfw.x11.screen = DefaultScreen(_glfw.x11.display);
_glfw.x11.root = RootWindow(_glfw.x11.display, _glfw.x11.screen);
_glfw.x11.context = XUniqueContext();
getSystemContentScale(&_glfw.x11.contentScaleX, &_glfw.x11.contentScaleY);
if (!initExtensions())
return GLFW_FALSE;
_glfw.x11.helperWindowHandle = createHelperWindow();
_glfw.x11.hiddenCursorHandle = createHiddenCursor();
if (XSupportsLocale())
{
XSetLocaleModifiers("");
_glfw.x11.im = XOpenIM(_glfw.x11.display, 0, NULL, NULL);
if (_glfw.x11.im)
{
if (!hasUsableInputMethodStyle())
{
XCloseIM(_glfw.x11.im);
_glfw.x11.im = NULL;
}
}
}
#if defined(__linux__)
if (!_glfwInitJoysticksLinux())
return GLFW_FALSE;
#endif
_glfwInitTimerPOSIX();
_glfwPollMonitorsX11();
return GLFW_TRUE;
}
void _glfwPlatformTerminate(void)
{
if (_glfw.x11.helperWindowHandle)
{
if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD) ==
_glfw.x11.helperWindowHandle)
{
_glfwPushSelectionToManagerX11();
}
XDestroyWindow(_glfw.x11.display, _glfw.x11.helperWindowHandle);
_glfw.x11.helperWindowHandle = None;
}
if (_glfw.x11.hiddenCursorHandle)
{
XFreeCursor(_glfw.x11.display, _glfw.x11.hiddenCursorHandle);
_glfw.x11.hiddenCursorHandle = (Cursor) 0;
}
free(_glfw.x11.primarySelectionString);
free(_glfw.x11.clipboardString);
if (_glfw.x11.im)
{
XCloseIM(_glfw.x11.im);
_glfw.x11.im = NULL;
}
if (_glfw.x11.display)
{
XCloseDisplay(_glfw.x11.display);
_glfw.x11.display = NULL;
}
if (_glfw.x11.x11xcb.handle)
{
_glfw_dlclose(_glfw.x11.x11xcb.handle);
_glfw.x11.x11xcb.handle = NULL;
}
if (_glfw.x11.xcursor.handle)
{
_glfw_dlclose(_glfw.x11.xcursor.handle);
_glfw.x11.xcursor.handle = NULL;
}
if (_glfw.x11.randr.handle)
{
_glfw_dlclose(_glfw.x11.randr.handle);
_glfw.x11.randr.handle = NULL;
}
if (_glfw.x11.xinerama.handle)
{
_glfw_dlclose(_glfw.x11.xinerama.handle);
_glfw.x11.xinerama.handle = NULL;
}
if (_glfw.x11.xrender.handle)
{
_glfw_dlclose(_glfw.x11.xrender.handle);
_glfw.x11.xrender.handle = NULL;
}
if (_glfw.x11.vidmode.handle)
{
_glfw_dlclose(_glfw.x11.vidmode.handle);
_glfw.x11.vidmode.handle = NULL;
}
if (_glfw.x11.xi.handle)
{
_glfw_dlclose(_glfw.x11.xi.handle);
_glfw.x11.xi.handle = NULL;
}
// NOTE: These need to be unloaded after XCloseDisplay, as they register
// cleanup callbacks that get called by that function
_glfwTerminateEGL();
_glfwTerminateGLX();
#if defined(__linux__)
_glfwTerminateJoysticksLinux();
#endif
}
const char* _glfwPlatformGetVersionString(void)
{
return _GLFW_VERSION_NUMBER " X11 GLX EGL OSMesa"
#if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
" clock_gettime"
#else
" gettimeofday"
#endif
#if defined(__linux__)
" evdev"
#endif
#if defined(_GLFW_BUILD_DLL)
" shared"
#endif
;
}
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