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SDL_x11window.c
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SDL_x11window.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.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 "../../SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_X11
#include "SDL_hints.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_keyboard_c.h"
#include "../../events/SDL_mouse_c.h"
#include "../../events/SDL_events_c.h"
#include "SDL_x11video.h"
#include "SDL_x11mouse.h"
#include "SDL_x11shape.h"
#include "SDL_x11xinput2.h"
#include "SDL_x11xfixes.h"
#ifdef SDL_VIDEO_OPENGL_EGL
#include "SDL_x11opengles.h"
#endif
#include "SDL_timer.h"
#include "SDL_syswm.h"
#define _NET_WM_STATE_REMOVE 0l
#define _NET_WM_STATE_ADD 1l
static Bool isMapNotify(Display *dpy, XEvent *ev, XPointer win) /* NOLINT(readability-non-const-parameter): cannot make XPointer a const pointer due to typedef */
{
return ev->type == MapNotify && ev->xmap.window == *((Window *)win);
}
static Bool isUnmapNotify(Display *dpy, XEvent *ev, XPointer win) /* NOLINT(readability-non-const-parameter): cannot make XPointer a const pointer due to typedef */
{
return ev->type == UnmapNotify && ev->xunmap.window == *((Window *)win);
}
/*
static Bool isConfigureNotify(Display *dpy, XEvent *ev, XPointer win)
{
return ev->type == ConfigureNotify && ev->xconfigure.window == *((Window*)win);
}
static Bool X11_XIfEventTimeout(Display *display, XEvent *event_return, Bool (*predicate)(), XPointer arg, int timeoutMS)
{
Uint32 start = SDL_GetTicks();
while (!X11_XCheckIfEvent(display, event_return, predicate, arg)) {
if (SDL_TICKS_PASSED(SDL_GetTicks(), start + timeoutMS)) {
return False;
}
}
return True;
}
*/
static SDL_bool X11_IsWindowMapped(_THIS, SDL_Window *window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
XWindowAttributes attr;
X11_XGetWindowAttributes(videodata->display, data->xwindow, &attr);
if (attr.map_state != IsUnmapped) {
return SDL_TRUE;
} else {
return SDL_FALSE;
}
}
#if 0
static SDL_bool X11_IsActionAllowed(SDL_Window *window, Atom action)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
Atom _NET_WM_ALLOWED_ACTIONS = data->videodata->_NET_WM_ALLOWED_ACTIONS;
Atom type;
Display *display = data->videodata->display;
int form;
unsigned long remain;
unsigned long len, i;
Atom *list;
SDL_bool ret = SDL_FALSE;
if (X11_XGetWindowProperty(display, data->xwindow, _NET_WM_ALLOWED_ACTIONS, 0, 1024, False, XA_ATOM, &type, &form, &len, &remain, (unsigned char **)&list) == Success) {
for (i=0; i<len; ++i) {
if (list[i] == action) {
ret = SDL_TRUE;
break;
}
}
X11_XFree(list);
}
return ret;
}
#endif /* 0 */
void X11_SetNetWMState(_THIS, Window xwindow, Uint32 flags)
{
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
Display *display = videodata->display;
/* !!! FIXME: just dereference videodata below instead of copying to locals. */
Atom _NET_WM_STATE = videodata->_NET_WM_STATE;
/* Atom _NET_WM_STATE_HIDDEN = videodata->_NET_WM_STATE_HIDDEN; */
Atom _NET_WM_STATE_FOCUSED = videodata->_NET_WM_STATE_FOCUSED;
Atom _NET_WM_STATE_MAXIMIZED_VERT = videodata->_NET_WM_STATE_MAXIMIZED_VERT;
Atom _NET_WM_STATE_MAXIMIZED_HORZ = videodata->_NET_WM_STATE_MAXIMIZED_HORZ;
Atom _NET_WM_STATE_FULLSCREEN = videodata->_NET_WM_STATE_FULLSCREEN;
Atom _NET_WM_STATE_ABOVE = videodata->_NET_WM_STATE_ABOVE;
Atom _NET_WM_STATE_SKIP_TASKBAR = videodata->_NET_WM_STATE_SKIP_TASKBAR;
Atom _NET_WM_STATE_SKIP_PAGER = videodata->_NET_WM_STATE_SKIP_PAGER;
Atom atoms[16];
int count = 0;
/* The window manager sets this property, we shouldn't set it.
If we did, this would indicate to the window manager that we don't
actually want to be mapped during X11_XMapRaised(), which would be bad.
*
if (flags & SDL_WINDOW_HIDDEN) {
atoms[count++] = _NET_WM_STATE_HIDDEN;
}
*/
if (flags & SDL_WINDOW_ALWAYS_ON_TOP) {
atoms[count++] = _NET_WM_STATE_ABOVE;
}
if (flags & SDL_WINDOW_SKIP_TASKBAR) {
atoms[count++] = _NET_WM_STATE_SKIP_TASKBAR;
atoms[count++] = _NET_WM_STATE_SKIP_PAGER;
}
if (flags & SDL_WINDOW_INPUT_FOCUS) {
atoms[count++] = _NET_WM_STATE_FOCUSED;
}
if (flags & SDL_WINDOW_MAXIMIZED) {
atoms[count++] = _NET_WM_STATE_MAXIMIZED_VERT;
atoms[count++] = _NET_WM_STATE_MAXIMIZED_HORZ;
}
if (flags & SDL_WINDOW_FULLSCREEN) {
atoms[count++] = _NET_WM_STATE_FULLSCREEN;
}
SDL_assert(count <= SDL_arraysize(atoms));
if (count > 0) {
X11_XChangeProperty(display, xwindow, _NET_WM_STATE, XA_ATOM, 32,
PropModeReplace, (unsigned char *)atoms, count);
} else {
X11_XDeleteProperty(display, xwindow, _NET_WM_STATE);
}
}
Uint32 X11_GetNetWMState(_THIS, SDL_Window *window, Window xwindow)
{
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
Display *display = videodata->display;
Atom _NET_WM_STATE = videodata->_NET_WM_STATE;
Atom _NET_WM_STATE_HIDDEN = videodata->_NET_WM_STATE_HIDDEN;
Atom _NET_WM_STATE_FOCUSED = videodata->_NET_WM_STATE_FOCUSED;
Atom _NET_WM_STATE_MAXIMIZED_VERT = videodata->_NET_WM_STATE_MAXIMIZED_VERT;
Atom _NET_WM_STATE_MAXIMIZED_HORZ = videodata->_NET_WM_STATE_MAXIMIZED_HORZ;
Atom _NET_WM_STATE_FULLSCREEN = videodata->_NET_WM_STATE_FULLSCREEN;
Atom actualType;
int actualFormat;
unsigned long i, numItems, bytesAfter;
unsigned char *propertyValue = NULL;
long maxLength = 1024;
Uint32 flags = 0;
if (X11_XGetWindowProperty(display, xwindow, _NET_WM_STATE,
0l, maxLength, False, XA_ATOM, &actualType,
&actualFormat, &numItems, &bytesAfter,
&propertyValue) == Success) {
Atom *atoms = (Atom *)propertyValue;
int maximized = 0;
int fullscreen = 0;
for (i = 0; i < numItems; ++i) {
if (atoms[i] == _NET_WM_STATE_HIDDEN) {
flags |= SDL_WINDOW_HIDDEN;
} else if (atoms[i] == _NET_WM_STATE_FOCUSED) {
flags |= SDL_WINDOW_INPUT_FOCUS;
} else if (atoms[i] == _NET_WM_STATE_MAXIMIZED_VERT) {
maximized |= 1;
} else if (atoms[i] == _NET_WM_STATE_MAXIMIZED_HORZ) {
maximized |= 2;
} else if (atoms[i] == _NET_WM_STATE_FULLSCREEN) {
fullscreen = 1;
}
}
if (fullscreen == 1) {
flags |= SDL_WINDOW_FULLSCREEN;
}
if (maximized == 3) {
/* Fullscreen windows are maximized on some window managers,
and this is functional behavior - if maximized is removed,
the windows remain floating centered and not covering the
rest of the desktop. So we just won't change the maximize
state for fullscreen windows here, otherwise SDL would think
we're always maximized when fullscreen and not restore the
correct state when leaving fullscreen.
*/
if (fullscreen) {
flags |= (window->flags & SDL_WINDOW_MAXIMIZED);
} else {
flags |= SDL_WINDOW_MAXIMIZED;
}
}
/* If the window is unmapped, numItems will be zero and _NET_WM_STATE_HIDDEN
* will not be set. Do an additional check to see if the window is unmapped
* and mark it as SDL_WINDOW_HIDDEN if it is.
*/
{
XWindowAttributes attr;
SDL_memset(&attr, 0, sizeof(attr));
X11_XGetWindowAttributes(videodata->display, xwindow, &attr);
if (attr.map_state == IsUnmapped) {
flags |= SDL_WINDOW_HIDDEN;
}
}
X11_XFree(propertyValue);
}
/* FIXME, check the size hints for resizable */
/* flags |= SDL_WINDOW_RESIZABLE; */
return flags;
}
static int SetupWindowData(_THIS, SDL_Window *window, Window w, BOOL created)
{
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
SDL_WindowData *data;
int numwindows = videodata->numwindows;
int windowlistlength = videodata->windowlistlength;
SDL_WindowData **windowlist = videodata->windowlist;
/* Allocate the window data */
data = (SDL_WindowData *)SDL_calloc(1, sizeof(*data));
if (!data) {
return SDL_OutOfMemory();
}
data->window = window;
data->xwindow = w;
#ifdef X_HAVE_UTF8_STRING
if (SDL_X11_HAVE_UTF8 && videodata->im) {
data->ic =
X11_XCreateIC(videodata->im, XNClientWindow, w, XNFocusWindow, w,
XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
NULL);
}
#endif
data->created = created;
data->videodata = videodata;
/* Associate the data with the window */
if (numwindows < windowlistlength) {
windowlist[numwindows] = data;
videodata->numwindows++;
} else {
windowlist =
(SDL_WindowData **)SDL_realloc(windowlist,
(numwindows +
1) *
sizeof(*windowlist));
if (!windowlist) {
SDL_free(data);
return SDL_OutOfMemory();
}
windowlist[numwindows] = data;
videodata->numwindows++;
videodata->windowlistlength++;
videodata->windowlist = windowlist;
}
/* Fill in the SDL window with the window data */
{
XWindowAttributes attrib;
X11_XGetWindowAttributes(data->videodata->display, w, &attrib);
window->x = attrib.x;
window->y = attrib.y;
window->w = attrib.width;
window->h = attrib.height;
if (attrib.map_state != IsUnmapped) {
window->flags |= SDL_WINDOW_SHOWN;
} else {
window->flags &= ~SDL_WINDOW_SHOWN;
}
data->visual = attrib.visual;
data->colormap = attrib.colormap;
}
window->flags |= X11_GetNetWMState(_this, window, w);
{
Window FocalWindow;
int RevertTo = 0;
X11_XGetInputFocus(data->videodata->display, &FocalWindow, &RevertTo);
if (FocalWindow == w) {
window->flags |= SDL_WINDOW_INPUT_FOCUS;
}
if (window->flags & SDL_WINDOW_INPUT_FOCUS) {
SDL_SetKeyboardFocus(data->window);
}
if (window->flags & SDL_WINDOW_MOUSE_GRABBED) {
/* Tell x11 to clip mouse */
}
}
/* All done! */
window->driverdata = data;
return 0;
}
static void SetWindowBordered(Display *display, int screen, Window window, SDL_bool border)
{
/*
* this code used to check for KWM_WIN_DECORATION, but KDE hasn't
* supported it for years and years. It now respects _MOTIF_WM_HINTS.
* Gnome is similar: just use the Motif atom.
*/
Atom WM_HINTS = X11_XInternAtom(display, "_MOTIF_WM_HINTS", True);
if (WM_HINTS != None) {
/* Hints used by Motif compliant window managers */
struct
{
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} MWMHints = {
(1L << 1), 0, border ? 1 : 0, 0, 0
};
X11_XChangeProperty(display, window, WM_HINTS, WM_HINTS, 32,
PropModeReplace, (unsigned char *)&MWMHints,
sizeof(MWMHints) / sizeof(long));
} else { /* set the transient hints instead, if necessary */
X11_XSetTransientForHint(display, window, RootWindow(display, screen));
}
}
int X11_CreateWindow(_THIS, SDL_Window *window)
{
SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
SDL_DisplayData *displaydata =
(SDL_DisplayData *)SDL_GetDisplayForWindow(window)->driverdata;
const SDL_bool force_override_redirect = SDL_GetHintBoolean(SDL_HINT_X11_FORCE_OVERRIDE_REDIRECT, SDL_FALSE);
SDL_WindowData *windowdata;
Display *display = data->display;
int screen = displaydata->screen;
Visual *visual;
int depth;
XSetWindowAttributes xattr;
Window w;
XSizeHints *sizehints;
XWMHints *wmhints;
XClassHint *classhints;
Atom _NET_WM_BYPASS_COMPOSITOR;
Atom _NET_WM_WINDOW_TYPE;
Atom wintype;
const char *wintype_name = NULL;
long compositor = 1;
Atom _NET_WM_PID;
long fevent = 0;
const char *hint = NULL;
#if defined(SDL_VIDEO_OPENGL_GLX) || defined(SDL_VIDEO_OPENGL_EGL)
const char *forced_visual_id = SDL_GetHint(SDL_HINT_VIDEO_X11_WINDOW_VISUALID);
if (forced_visual_id && forced_visual_id[0] != '\0') {
XVisualInfo *vi, template;
int nvis;
SDL_zero(template);
template.visualid = SDL_strtol(forced_visual_id, NULL, 0);
vi = X11_XGetVisualInfo(display, VisualIDMask, &template, &nvis);
if (vi) {
visual = vi->visual;
depth = vi->depth;
X11_XFree(vi);
} else {
return -1;
}
} else if ((window->flags & SDL_WINDOW_OPENGL) &&
!SDL_getenv("SDL_VIDEO_X11_VISUALID")) {
XVisualInfo *vinfo = NULL;
#ifdef SDL_VIDEO_OPENGL_EGL
if (((_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) ||
SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_FORCE_EGL, SDL_FALSE))
#ifdef SDL_VIDEO_OPENGL_GLX
&& (!_this->gl_data || X11_GL_UseEGL(_this) )
#endif
) {
vinfo = X11_GLES_GetVisual(_this, display, screen);
} else
#endif
{
#ifdef SDL_VIDEO_OPENGL_GLX
vinfo = X11_GL_GetVisual(_this, display, screen);
#endif
}
if (!vinfo) {
return -1;
}
visual = vinfo->visual;
depth = vinfo->depth;
X11_XFree(vinfo);
} else
#endif
{
visual = displaydata->visual;
depth = displaydata->depth;
}
xattr.override_redirect = ((window->flags & SDL_WINDOW_TOOLTIP) || (window->flags & SDL_WINDOW_POPUP_MENU) || force_override_redirect) ? True : False;
xattr.backing_store = NotUseful;
xattr.background_pixmap = None;
xattr.border_pixel = 0;
if (visual->class == DirectColor) {
XColor *colorcells;
int i;
int ncolors;
int rmax, gmax, bmax;
int rmask, gmask, bmask;
int rshift, gshift, bshift;
xattr.colormap =
X11_XCreateColormap(display, RootWindow(display, screen),
visual, AllocAll);
/* If we can't create a colormap, then we must die */
if (!xattr.colormap) {
return SDL_SetError("Could not create writable colormap");
}
/* OK, we got a colormap, now fill it in as best as we can */
colorcells = SDL_malloc(visual->map_entries * sizeof(XColor));
if (!colorcells) {
return SDL_OutOfMemory();
}
ncolors = visual->map_entries;
rmax = 0xffff;
gmax = 0xffff;
bmax = 0xffff;
rshift = 0;
rmask = visual->red_mask;
while (0 == (rmask & 1)) {
rshift++;
rmask >>= 1;
}
gshift = 0;
gmask = visual->green_mask;
while (0 == (gmask & 1)) {
gshift++;
gmask >>= 1;
}
bshift = 0;
bmask = visual->blue_mask;
while (0 == (bmask & 1)) {
bshift++;
bmask >>= 1;
}
/* build the color table pixel values */
for (i = 0; i < ncolors; i++) {
Uint32 red = (rmax * i) / (ncolors - 1);
Uint32 green = (gmax * i) / (ncolors - 1);
Uint32 blue = (bmax * i) / (ncolors - 1);
Uint32 rbits = (rmask * i) / (ncolors - 1);
Uint32 gbits = (gmask * i) / (ncolors - 1);
Uint32 bbits = (bmask * i) / (ncolors - 1);
Uint32 pix =
(rbits << rshift) | (gbits << gshift) | (bbits << bshift);
colorcells[i].pixel = pix;
colorcells[i].red = red;
colorcells[i].green = green;
colorcells[i].blue = blue;
colorcells[i].flags = DoRed | DoGreen | DoBlue;
}
X11_XStoreColors(display, xattr.colormap, colorcells, ncolors);
SDL_free(colorcells);
} else {
xattr.colormap =
X11_XCreateColormap(display, RootWindow(display, screen),
visual, AllocNone);
}
/* Always create this with the window->windowed.* fields; if we're
creating a windowed mode window, that's fine. If we're creating a
fullscreen window, the window manager will want to know these values
so it can use them if we go _back_ to windowed mode. SDL manages
migration to fullscreen after CreateSDLWindow returns, which will
put all the SDL_Window fields and system state as expected. */
w = X11_XCreateWindow(display, RootWindow(display, screen),
window->windowed.x, window->windowed.y, window->windowed.w, window->windowed.h,
0, depth, InputOutput, visual,
(CWOverrideRedirect | CWBackPixmap | CWBorderPixel |
CWBackingStore | CWColormap),
&xattr);
if (!w) {
return SDL_SetError("Couldn't create window");
}
SetWindowBordered(display, screen, w,
(window->flags & SDL_WINDOW_BORDERLESS) == 0);
sizehints = X11_XAllocSizeHints();
/* Setup the normal size hints */
sizehints->flags = 0;
if (!(window->flags & SDL_WINDOW_RESIZABLE)) {
sizehints->min_width = sizehints->max_width = window->w;
sizehints->min_height = sizehints->max_height = window->h;
sizehints->flags |= (PMaxSize | PMinSize);
}
sizehints->x = window->x;
sizehints->y = window->y;
sizehints->flags |= USPosition;
/* Setup the input hints so we get keyboard input */
wmhints = X11_XAllocWMHints();
wmhints->input = True;
wmhints->window_group = data->window_group;
wmhints->flags = InputHint | WindowGroupHint;
/* Setup the class hints so we can get an icon (AfterStep) */
classhints = X11_XAllocClassHint();
classhints->res_name = data->classname;
classhints->res_class = data->classname;
/* Set the size, input and class hints, and define WM_CLIENT_MACHINE and WM_LOCALE_NAME */
X11_XSetWMProperties(display, w, NULL, NULL, NULL, 0, sizehints, wmhints, classhints);
X11_XFree(sizehints);
X11_XFree(wmhints);
X11_XFree(classhints);
/* Set the PID related to the window for the given hostname, if possible */
if (data->pid > 0) {
long pid = (long)data->pid;
_NET_WM_PID = X11_XInternAtom(display, "_NET_WM_PID", False);
X11_XChangeProperty(display, w, _NET_WM_PID, XA_CARDINAL, 32, PropModeReplace,
(unsigned char *)&pid, 1);
}
/* Set the window manager state */
X11_SetNetWMState(_this, w, window->flags);
compositor = 2; /* don't disable compositing except for "normal" windows */
hint = SDL_GetHint(SDL_HINT_X11_WINDOW_TYPE);
if (window->flags & SDL_WINDOW_UTILITY) {
wintype_name = "_NET_WM_WINDOW_TYPE_UTILITY";
} else if (window->flags & SDL_WINDOW_TOOLTIP) {
wintype_name = "_NET_WM_WINDOW_TYPE_TOOLTIP";
} else if (window->flags & SDL_WINDOW_POPUP_MENU) {
wintype_name = "_NET_WM_WINDOW_TYPE_POPUP_MENU";
} else if (hint && *hint) {
wintype_name = hint;
} else {
wintype_name = "_NET_WM_WINDOW_TYPE_NORMAL";
compositor = 1; /* disable compositing for "normal" windows */
}
/* Let the window manager know what type of window we are. */
_NET_WM_WINDOW_TYPE = X11_XInternAtom(display, "_NET_WM_WINDOW_TYPE", False);
wintype = X11_XInternAtom(display, wintype_name, False);
X11_XChangeProperty(display, w, _NET_WM_WINDOW_TYPE, XA_ATOM, 32,
PropModeReplace, (unsigned char *)&wintype, 1);
if (SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, SDL_TRUE)) {
_NET_WM_BYPASS_COMPOSITOR = X11_XInternAtom(display, "_NET_WM_BYPASS_COMPOSITOR", False);
X11_XChangeProperty(display, w, _NET_WM_BYPASS_COMPOSITOR, XA_CARDINAL, 32,
PropModeReplace,
(unsigned char *)&compositor, 1);
}
{
Atom protocols[3];
int proto_count = 0;
protocols[proto_count++] = data->WM_DELETE_WINDOW; /* Allow window to be deleted by the WM */
protocols[proto_count++] = data->WM_TAKE_FOCUS; /* Since we will want to set input focus explicitly */
/* Default to using ping if there is no hint */
if (SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_NET_WM_PING, SDL_TRUE)) {
protocols[proto_count++] = data->_NET_WM_PING; /* Respond so WM knows we're alive */
}
SDL_assert(proto_count <= sizeof(protocols) / sizeof(protocols[0]));
X11_XSetWMProtocols(display, w, protocols, proto_count);
}
if (SetupWindowData(_this, window, w, SDL_TRUE) < 0) {
X11_XDestroyWindow(display, w);
return -1;
}
windowdata = (SDL_WindowData *)window->driverdata;
#if defined(SDL_VIDEO_OPENGL_ES) || defined(SDL_VIDEO_OPENGL_ES2) || defined(SDL_VIDEO_OPENGL_EGL)
if ((window->flags & SDL_WINDOW_OPENGL) &&
((_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES) ||
SDL_GetHintBoolean(SDL_HINT_VIDEO_X11_FORCE_EGL, SDL_FALSE))
#ifdef SDL_VIDEO_OPENGL_GLX
&& (!_this->gl_data || X11_GL_UseEGL(_this) )
#endif
) {
#ifdef SDL_VIDEO_OPENGL_EGL
if (!_this->egl_data) {
return -1;
}
/* Create the GLES window surface */
windowdata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType)w);
if (windowdata->egl_surface == EGL_NO_SURFACE) {
return SDL_SetError("Could not create GLES window surface");
}
#else
return SDL_SetError("Could not create GLES window surface (EGL support not configured)");
#endif /* SDL_VIDEO_OPENGL_EGL */
}
#endif
#ifdef X_HAVE_UTF8_STRING
if (SDL_X11_HAVE_UTF8 && windowdata->ic) {
X11_XGetICValues(windowdata->ic, XNFilterEvents, &fevent, NULL);
}
#endif
X11_Xinput2SelectTouch(_this, window);
X11_XSelectInput(display, w,
(FocusChangeMask | EnterWindowMask | LeaveWindowMask |
ExposureMask | ButtonPressMask | ButtonReleaseMask |
PointerMotionMask | KeyPressMask | KeyReleaseMask |
PropertyChangeMask | StructureNotifyMask |
KeymapStateMask | fevent));
/* For _ICC_PROFILE. */
X11_XSelectInput(display, RootWindow(display, screen), PropertyChangeMask);
X11_XFlush(display);
return 0;
}
int X11_CreateWindowFrom(_THIS, SDL_Window *window, const void *data)
{
Window w = (Window)data;
window->title = X11_GetWindowTitle(_this, w);
if (SetupWindowData(_this, window, w, SDL_FALSE) < 0) {
return -1;
}
return 0;
}
char *X11_GetWindowTitle(_THIS, Window xwindow)
{
SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
Display *display = data->display;
int status, real_format;
Atom real_type;
unsigned long items_read, items_left;
unsigned char *propdata;
char *title = NULL;
status = X11_XGetWindowProperty(display, xwindow, data->_NET_WM_NAME,
0L, 8192L, False, data->UTF8_STRING, &real_type, &real_format,
&items_read, &items_left, &propdata);
if (status == Success && propdata) {
title = SDL_strdup(SDL_static_cast(char *, propdata));
X11_XFree(propdata);
} else {
status = X11_XGetWindowProperty(display, xwindow, XA_WM_NAME,
0L, 8192L, False, XA_STRING, &real_type, &real_format,
&items_read, &items_left, &propdata);
if (status == Success && propdata) {
title = SDL_iconv_string("UTF-8", "", SDL_static_cast(char *, propdata), items_read + 1);
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Failed to convert WM_NAME title expecting UTF8! Title: %s", title);
X11_XFree(propdata);
} else {
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Could not get any window title response from Xorg, returning empty string!");
title = SDL_strdup("");
}
}
return title;
}
void X11_SetWindowTitle(_THIS, SDL_Window *window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
Window xwindow = data->xwindow;
Display *display = data->videodata->display;
char *title = window->title ? window->title : "";
SDL_X11_SetWindowTitle(display, xwindow, title);
}
void X11_SetWindowIcon(_THIS, SDL_Window *window, SDL_Surface *icon)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
Display *display = data->videodata->display;
Atom _NET_WM_ICON = data->videodata->_NET_WM_ICON;
if (icon) {
int propsize;
long *propdata;
/* Set the _NET_WM_ICON property */
SDL_assert(icon->format->format == SDL_PIXELFORMAT_ARGB8888);
propsize = 2 + (icon->w * icon->h);
propdata = SDL_malloc(propsize * sizeof(long));
if (propdata) {
int x, y;
Uint32 *src;
long *dst;
propdata[0] = icon->w;
propdata[1] = icon->h;
dst = &propdata[2];
for (y = 0; y < icon->h; ++y) {
src = (Uint32 *)((Uint8 *)icon->pixels + y * icon->pitch);
for (x = 0; x < icon->w; ++x) {
*dst++ = *src++;
}
}
X11_XChangeProperty(display, data->xwindow, _NET_WM_ICON, XA_CARDINAL,
32, PropModeReplace, (unsigned char *)propdata,
propsize);
}
SDL_free(propdata);
} else {
X11_XDeleteProperty(display, data->xwindow, _NET_WM_ICON);
}
X11_XFlush(display);
}
static SDL_bool caught_x11_error = SDL_FALSE;
static int X11_CatchAnyError(Display *d, XErrorEvent *e)
{
/* this may happen during tumultuous times when we are polling anyhow,
so just note we had an error and return control. */
caught_x11_error = SDL_TRUE;
return 0;
}
void X11_SetWindowPosition(_THIS, SDL_Window *window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
Display *display = data->videodata->display;
int (*prev_handler)(Display *, XErrorEvent *) = NULL;
unsigned int childCount;
Window childReturn, root, parent;
Window *children;
XWindowAttributes attrs;
int x, y;
int orig_x, orig_y;
Uint32 timeout;
X11_XSync(display, False);
X11_XQueryTree(display, data->xwindow, &root, &parent, &children, &childCount);
X11_XGetWindowAttributes(display, data->xwindow, &attrs);
X11_XTranslateCoordinates(display, parent, DefaultRootWindow(display),
attrs.x, attrs.y, &orig_x, &orig_y, &childReturn);
/*Attempt to move the window*/
X11_XMoveWindow(display, data->xwindow, window->x - data->border_left, window->y - data->border_top);
/* Wait a brief time to see if the window manager decided to let this move happen.
If the window changes at all, even to an unexpected value, we break out. */
X11_XSync(display, False);
prev_handler = X11_XSetErrorHandler(X11_CatchAnyError);
timeout = SDL_GetTicks() + 100;
while (SDL_TRUE) {
caught_x11_error = SDL_FALSE;
X11_XSync(display, False);
X11_XGetWindowAttributes(display, data->xwindow, &attrs);
X11_XTranslateCoordinates(display, parent, DefaultRootWindow(display),
attrs.x, attrs.y, &x, &y, &childReturn);
if (!caught_x11_error) {
if ((x != orig_x) || (y != orig_y)) {
break; /* window moved, time to go. */
} else if ((x == window->x) && (y == window->y)) {
break; /* we're at the place we wanted to be anyhow, drop out. */
}
}
if (SDL_TICKS_PASSED(SDL_GetTicks(), timeout)) {
break;
}
SDL_Delay(10);
}
if (!caught_x11_error) {
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_MOVED, x, y);
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, attrs.width, attrs.height);
}
X11_XSetErrorHandler(prev_handler);
caught_x11_error = SDL_FALSE;
}
void X11_SetWindowMinimumSize(_THIS, SDL_Window *window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
Display *display = data->videodata->display;
if (window->flags & SDL_WINDOW_RESIZABLE) {
XSizeHints *sizehints = X11_XAllocSizeHints();
long userhints;
X11_XGetWMNormalHints(display, data->xwindow, sizehints, &userhints);
sizehints->min_width = window->min_w;
sizehints->min_height = window->min_h;
sizehints->flags |= PMinSize;
X11_XSetWMNormalHints(display, data->xwindow, sizehints);
X11_XFree(sizehints);
}
X11_XFlush(display);
}
void X11_SetWindowMaximumSize(_THIS, SDL_Window *window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
Display *display = data->videodata->display;
if (window->flags & SDL_WINDOW_RESIZABLE) {
XSizeHints *sizehints = X11_XAllocSizeHints();
long userhints;
X11_XGetWMNormalHints(display, data->xwindow, sizehints, &userhints);
sizehints->max_width = window->max_w;
sizehints->max_height = window->max_h;
sizehints->flags |= PMaxSize;
X11_XSetWMNormalHints(display, data->xwindow, sizehints);
X11_XFree(sizehints);
}
X11_XFlush(display);
}
void X11_SetWindowSize(_THIS, SDL_Window *window)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
Display *display = data->videodata->display;
int (*prev_handler)(Display *, XErrorEvent *) = NULL;
XWindowAttributes attrs;
int orig_w, orig_h;
Uint32 timeout;
X11_XSync(display, False);
X11_XGetWindowAttributes(display, data->xwindow, &attrs);
orig_w = attrs.width;
orig_h = attrs.height;
if (SDL_IsShapedWindow(window)) {
X11_ResizeWindowShape(window);
}
if (!(window->flags & SDL_WINDOW_RESIZABLE)) {
/* Apparently, if the X11 Window is set to a 'non-resizable' window, you cannot resize it using the X11_XResizeWindow, thus
we must set the size hints to adjust the window size. */
XSizeHints *sizehints = X11_XAllocSizeHints();
long userhints;
X11_XGetWMNormalHints(display, data->xwindow, sizehints, &userhints);
sizehints->min_width = sizehints->max_width = window->w;
sizehints->min_height = sizehints->max_height = window->h;
sizehints->flags |= PMinSize | PMaxSize;
X11_XSetWMNormalHints(display, data->xwindow, sizehints);
X11_XFree(sizehints);
/* From Pierre-Loup:
WMs each have their little quirks with that. When you change the
size hints, they get a ConfigureNotify event with the
WM_NORMAL_SIZE_HINTS Atom. They all save the hints then, but they
don't all resize the window right away to enforce the new hints.
Some of them resize only after:
- A user-initiated move or resize
- A code-initiated move or resize
- Hiding & showing window (Unmap & map)
The following move & resize seems to help a lot of WMs that didn't
properly update after the hints were changed. We don't do a
hide/show, because there are supposedly subtle problems with doing so
and transitioning from windowed to fullscreen in Unity.
*/
X11_XResizeWindow(display, data->xwindow, window->w, window->h);
X11_XMoveWindow(display, data->xwindow, window->x - data->border_left, window->y - data->border_top);
X11_XRaiseWindow(display, data->xwindow);
} else {
X11_XResizeWindow(display, data->xwindow, window->w, window->h);
}
X11_XSync(display, False);
prev_handler = X11_XSetErrorHandler(X11_CatchAnyError);
/* Wait a brief time to see if the window manager decided to let this resize happen.
If the window changes at all, even to an unexpected value, we break out. */
timeout = SDL_GetTicks() + 100;
while (SDL_TRUE) {
caught_x11_error = SDL_FALSE;
X11_XSync(display, False);
X11_XGetWindowAttributes(display, data->xwindow, &attrs);
if (!caught_x11_error) {
if ((attrs.width != orig_w) || (attrs.height != orig_h)) {
break; /* window changed, time to go. */
} else if ((attrs.width == window->w) && (attrs.height == window->h)) {
break; /* we're at the place we wanted to be anyhow, drop out. */
}
}
if (SDL_TICKS_PASSED(SDL_GetTicks(), timeout)) {
/* Timeout occurred and window size didn't change
* window manager likely denied the resize,
* or the new size is the same as the existing:
* - current width: is 'full width'.
* - try to set new width at 'full width + 1', which get truncated to 'full width'.
* - new width is/remains 'full width'
* So, even if we break here as a timeout, we can send an event, since the requested size isn't the same
* as the final size. (even if final size is same as original size).
*/
break;
}
SDL_Delay(10);
}
if (!caught_x11_error) {
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, attrs.width, attrs.height);
}
X11_XSetErrorHandler(prev_handler);
caught_x11_error = SDL_FALSE;
}
int X11_GetWindowBordersSize(_THIS, SDL_Window *window, int *top, int *left, int *bottom, int *right)
{
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
*left = data->border_left;
*right = data->border_right;
*top = data->border_top;
*bottom = data->border_bottom;
return 0;