Add XSETTINGS support to x11 driver
Import the XSettingsClient implementation to handle the settings selection. Currently, we only care about the Gdk/WindowScalingFactor value used by the windowing system to notify us of display-wide changes in the scaling factor.
This commit is contained in:
Emmanuele Bassi
Sam Lantinga
parent
d6da494c1c
commit
61dafb3b2f
8 changed files with 1174 additions and 1 deletions
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@ -104,7 +104,10 @@ function(get_clang_tidy_ignored_files OUTVAR)
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"hid.m"
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"hidraw.cpp"
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"hidusb.cpp"
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"hidapi.h")
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"hidapi.h"
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# XSETTINGS
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"xsettings-client.c"
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"xsettings-client.h")
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foreach(SOURCE_FILE ${3RD_PARTY_SOURCES})
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list(APPEND IGNORED_LIST "{\"name\":\"${SOURCE_FILE}\",\"lines\":[[1,1]]}")
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@ -33,6 +33,7 @@
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#include "SDL_x11touch.h"
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#include "SDL_x11xinput2.h"
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#include "SDL_x11xfixes.h"
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#include "SDL_x11settings.h"
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#include "../SDL_clipboard_c.h"
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#include "../../core/unix/SDL_poll.h"
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#include "../../events/SDL_events_c.h"
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@ -779,6 +780,16 @@ static void X11_HandleClipboardEvent(SDL_VideoDevice *_this, const XEvent *xeven
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}
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}
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static void X11_HandleSettingsEvent(SDL_VideoDevice *_this, const XEvent *xevent)
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{
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SDL_VideoData *videodata = _this->driverdata;
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SDL_assert(videodata->xsettings_window != None);
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SDL_assert(xevent->xany.window == videodata->xsettings_window);
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X11_HandleXsettings(_this, xevent);
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}
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static Bool isMapNotify(Display *display, XEvent *ev, XPointer arg)
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{
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XUnmapEvent *unmap;
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@ -1103,6 +1114,12 @@ static void X11_DispatchEvent(SDL_VideoDevice *_this, XEvent *xevent)
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return;
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}
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if ((videodata->xsettings_window != None) &&
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(videodata->xsettings_window == xevent->xany.window)) {
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X11_HandleSettingsEvent(_this, xevent);
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return;
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}
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data = X11_FindWindow(_this, xevent->xany.window);
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if (!data) {
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97
src/video/x11/SDL_x11settings.c
Normal file
97
src/video/x11/SDL_x11settings.c
Normal file
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@ -0,0 +1,97 @@
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/*
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Simple DirectMedia Layer
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Copyright 2024 Igalia S.L.
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#if defined(SDL_VIDEO_DRIVER_X11)
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#include "SDL_x11video.h"
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#include "SDL_x11settings.h"
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#define SDL_XSETTINGS_GDK_WINDOW_SCALING_FACTOR "Gdk/WindowScalingFactor"
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static void X11_XsettingsNotify(const char *name, XSettingsAction action, XSettingsSetting *setting, void *data)
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{
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SDL_VideoDevice *_this = data;
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float scale_factor = 1.0;
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int i;
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if (SDL_strcmp(name, SDL_XSETTINGS_GDK_WINDOW_SCALING_FACTOR) != 0) {
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return;
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}
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if (setting->type != XSETTINGS_TYPE_INT) {
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return;
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}
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switch (action) {
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case XSETTINGS_ACTION_NEW:
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SDL_FALLTHROUGH;
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case XSETTINGS_ACTION_CHANGED:
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scale_factor = setting->data.v_int;
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break;
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case XSETTINGS_ACTION_DELETED:
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scale_factor = 1.0;
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break;
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}
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if (_this) {
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for (i = 0; i < _this->num_displays; ++i) {
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SDL_SetDisplayContentScale(_this->displays[i], scale_factor);
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}
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}
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}
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void X11_InitXsettings(SDL_VideoDevice *_this)
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{
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SDL_VideoData *data = _this->driverdata;
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SDLX11_SettingsData *xsettings_data = &data->xsettings_data;
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xsettings_data->xsettings = xsettings_client_new(data->display,
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DefaultScreen(data->display), X11_XsettingsNotify, NULL, _this);
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}
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void X11_QuitXsettings(SDL_VideoDevice *_this)
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{
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SDL_VideoData *data = _this->driverdata;
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SDLX11_SettingsData *xsettings_data = &data->xsettings_data;
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if (xsettings_data->xsettings) {
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xsettings_client_destroy(xsettings_data->xsettings);
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xsettings_data->xsettings = NULL;
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}
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}
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void X11_HandleXsettings(SDL_VideoDevice *_this, const XEvent *xevent)
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{
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SDL_VideoData *data = _this->driverdata;
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SDLX11_SettingsData *xsettings_data = &data->xsettings_data;
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if (xsettings_data->xsettings) {
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if (!xsettings_client_process_event(xsettings_data->xsettings, xevent)) {
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xsettings_client_destroy(xsettings_data->xsettings);
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xsettings_data->xsettings = NULL;
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}
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}
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}
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#endif /* SDL_VIDEO_DRIVER_X11 */
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38
src/video/x11/SDL_x11settings.h
Normal file
38
src/video/x11/SDL_x11settings.h
Normal file
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@ -0,0 +1,38 @@
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/*
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Simple DirectMedia Layer
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Copyright 2024 Igalia S.L.
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
|
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in a product, an acknowledgment in the product documentation would be
|
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appreciated but is not required.
|
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2. Altered source versions must be plainly marked as such, and must not be
|
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifndef SDL_x11settings_h_
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#define SDL_x11settings_h_
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#include <X11/Xlib.h>
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#include "xsettings-client.h"
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typedef struct X11_SettingsData {
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XSettingsClient *xsettings;
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} SDLX11_SettingsData;
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extern void X11_InitXsettings(SDL_VideoDevice *_this);
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extern void X11_QuitXsettings(SDL_VideoDevice *_this);
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extern void X11_HandleXsettings(SDL_VideoDevice *_this, const XEvent *xevent);
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#endif /* SDL_x11settings_h_ */
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@ -443,6 +443,8 @@ int X11_VideoInit(SDL_VideoDevice *_this)
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X11_InitXfixes(_this);
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#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
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X11_InitXsettings(_this);
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#ifndef X_HAVE_UTF8_STRING
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#warning X server does not support UTF8_STRING, a feature introduced in 2000! This is likely to become a hard error in a future libSDL3.
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#endif
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@ -469,6 +471,10 @@ void X11_VideoQuit(SDL_VideoDevice *_this)
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X11_XDestroyWindow(data->display, data->clipboard_window);
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}
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if (data->xsettings_window) {
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X11_XDestroyWindow(data->display, data->xsettings_window);
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}
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#ifdef X_HAVE_UTF8_STRING
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if (data->im) {
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X11_XCloseIM(data->im);
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@ -480,6 +486,7 @@ void X11_VideoQuit(SDL_VideoDevice *_this)
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X11_QuitMouse(_this);
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X11_QuitTouch(_this);
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X11_QuitClipboard(_this);
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X11_QuitXsettings(_this);
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}
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SDL_bool X11_UseDirectColorVisuals(void)
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@ -36,6 +36,7 @@
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#include "SDL_x11modes.h"
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#include "SDL_x11mouse.h"
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#include "SDL_x11opengl.h"
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#include "SDL_x11settings.h"
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#include "SDL_x11window.h"
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#include "SDL_x11vulkan.h"
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@ -58,6 +59,8 @@ struct SDL_VideoData
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#ifdef SDL_VIDEO_DRIVER_X11_XFIXES
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SDL_Window *active_cursor_confined_window;
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#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
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Window xsettings_window;
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SDLX11_SettingsData xsettings_data;
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/* This is true for ICCCM2.0-compliant window managers */
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SDL_bool net_wm;
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855
src/video/x11/xsettings-client.c
Normal file
855
src/video/x11/xsettings-client.c
Normal file
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@ -0,0 +1,855 @@
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/*
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* Copyright © 2001, 2007 Red Hat, Inc.
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* Copyright 2024 Igalia S.L.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Red Hat not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Red Hat makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL RED HAT
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Owen Taylor, Red Hat, Inc.
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*/
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#include "SDL_internal.h"
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#ifdef SDL_VIDEO_DRIVER_X11
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#include "SDL_x11video.h"
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "xsettings-client.h"
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struct _XSettingsClient
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{
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Display *display;
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int screen;
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XSettingsNotifyFunc notify;
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XSettingsWatchFunc watch;
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void *cb_data;
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XSettingsGrabFunc grab;
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XSettingsGrabFunc ungrab;
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Window manager_window;
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Atom manager_atom;
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Atom selection_atom;
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Atom xsettings_atom;
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XSettingsList *settings;
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};
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static void
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notify_changes (XSettingsClient *client,
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XSettingsList *old_list)
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{
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XSettingsList *old_iter = old_list;
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XSettingsList *new_iter = client->settings;
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if (!client->notify)
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return;
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while (old_iter || new_iter)
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{
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int cmp;
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if (old_iter && new_iter)
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cmp = strcmp (old_iter->setting->name, new_iter->setting->name);
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else if (old_iter)
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cmp = -1;
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else
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cmp = 1;
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if (cmp < 0)
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{
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client->notify (old_iter->setting->name,
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XSETTINGS_ACTION_DELETED,
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NULL,
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client->cb_data);
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}
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else if (cmp == 0)
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{
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if (!xsettings_setting_equal (old_iter->setting,
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new_iter->setting))
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client->notify (old_iter->setting->name,
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XSETTINGS_ACTION_CHANGED,
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new_iter->setting,
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client->cb_data);
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}
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else
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{
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client->notify (new_iter->setting->name,
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XSETTINGS_ACTION_NEW,
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new_iter->setting,
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client->cb_data);
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}
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if (old_iter)
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old_iter = old_iter->next;
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if (new_iter)
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new_iter = new_iter->next;
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}
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}
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static int
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ignore_errors (Display *display, XErrorEvent *event)
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{
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return True;
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}
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static char local_byte_order = '\0';
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#define BYTES_LEFT(buffer) ((buffer)->data + (buffer)->len - (buffer)->pos)
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static XSettingsResult
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fetch_card16 (XSettingsBuffer *buffer,
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CARD16 *result)
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{
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CARD16 x;
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if (BYTES_LEFT (buffer) < 2)
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return XSETTINGS_ACCESS;
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x = *(CARD16 *)buffer->pos;
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buffer->pos += 2;
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if (buffer->byte_order == local_byte_order)
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*result = x;
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else
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*result = (x << 8) | (x >> 8);
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return XSETTINGS_SUCCESS;
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}
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static XSettingsResult
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fetch_ushort (XSettingsBuffer *buffer,
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unsigned short *result)
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{
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CARD16 x;
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XSettingsResult r;
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r = fetch_card16 (buffer, &x);
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if (r == XSETTINGS_SUCCESS)
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*result = x;
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return r;
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}
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static XSettingsResult
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fetch_card32 (XSettingsBuffer *buffer,
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CARD32 *result)
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{
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CARD32 x;
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if (BYTES_LEFT (buffer) < 4)
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return XSETTINGS_ACCESS;
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x = *(CARD32 *)buffer->pos;
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buffer->pos += 4;
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if (buffer->byte_order == local_byte_order)
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*result = x;
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else
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*result = (x << 24) | ((x & 0xff00) << 8) | ((x & 0xff0000) >> 8) | (x >> 24);
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return XSETTINGS_SUCCESS;
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}
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static XSettingsResult
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fetch_card8 (XSettingsBuffer *buffer,
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CARD8 *result)
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{
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if (BYTES_LEFT (buffer) < 1)
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return XSETTINGS_ACCESS;
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*result = *(CARD8 *)buffer->pos;
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buffer->pos += 1;
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|
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return XSETTINGS_SUCCESS;
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}
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#define XSETTINGS_PAD(n,m) ((n + m - 1) & (~(m-1)))
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static XSettingsList *
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parse_settings (unsigned char *data,
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size_t len)
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{
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XSettingsBuffer buffer;
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XSettingsResult result = XSETTINGS_SUCCESS;
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XSettingsList *settings = NULL;
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CARD32 serial;
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CARD32 n_entries;
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CARD32 i;
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XSettingsSetting *setting = NULL;
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char buffer_byte_order = '\0';
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local_byte_order = xsettings_byte_order ();
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buffer.pos = buffer.data = data;
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buffer.len = len;
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buffer.byte_order = '\0';
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result = fetch_card8 (&buffer, (unsigned char *) &buffer_byte_order);
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if (buffer_byte_order != MSBFirst &&
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buffer_byte_order != LSBFirst)
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{
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fprintf (stderr, "Invalid byte order in XSETTINGS property\n");
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result = XSETTINGS_FAILED;
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goto out;
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}
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buffer.byte_order = buffer_byte_order;
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buffer.pos += 3;
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result = fetch_card32 (&buffer, &serial);
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if (result != XSETTINGS_SUCCESS)
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goto out;
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result = fetch_card32 (&buffer, &n_entries);
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if (result != XSETTINGS_SUCCESS)
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goto out;
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for (i = 0; i < n_entries; i++)
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{
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CARD8 type;
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CARD16 name_len;
|
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CARD32 v_int;
|
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size_t pad_len;
|
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result = fetch_card8 (&buffer, &type);
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if (result != XSETTINGS_SUCCESS)
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goto out;
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buffer.pos += 1;
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result = fetch_card16 (&buffer, &name_len);
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if (result != XSETTINGS_SUCCESS)
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goto out;
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pad_len = XSETTINGS_PAD(name_len, 4);
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if (BYTES_LEFT (&buffer) < pad_len)
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{
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result = XSETTINGS_ACCESS;
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goto out;
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}
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||||
setting = malloc (sizeof *setting);
|
||||
if (!setting)
|
||||
{
|
||||
result = XSETTINGS_NO_MEM;
|
||||
goto out;
|
||||
}
|
||||
setting->type = XSETTINGS_TYPE_INT; /* No allocated memory */
|
||||
|
||||
setting->name = malloc (name_len + 1);
|
||||
if (!setting->name)
|
||||
{
|
||||
result = XSETTINGS_NO_MEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
memcpy (setting->name, buffer.pos, name_len);
|
||||
setting->name[name_len] = '\0';
|
||||
buffer.pos += pad_len;
|
||||
|
||||
result = fetch_card32 (&buffer, &v_int);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
setting->last_change_serial = v_int;
|
||||
|
||||
switch (type)
|
||||
{
|
||||
case XSETTINGS_TYPE_INT:
|
||||
result = fetch_card32 (&buffer, &v_int);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
|
||||
setting->data.v_int = (INT32)v_int;
|
||||
break;
|
||||
case XSETTINGS_TYPE_STRING:
|
||||
result = fetch_card32 (&buffer, &v_int);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
|
||||
pad_len = XSETTINGS_PAD (v_int, 4);
|
||||
if (v_int + 1 == 0 || /* Guard against wrap-around */
|
||||
BYTES_LEFT (&buffer) < pad_len)
|
||||
{
|
||||
result = XSETTINGS_ACCESS;
|
||||
goto out;
|
||||
}
|
||||
|
||||
setting->data.v_string = malloc (v_int + 1);
|
||||
if (!setting->data.v_string)
|
||||
{
|
||||
result = XSETTINGS_NO_MEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
memcpy (setting->data.v_string, buffer.pos, v_int);
|
||||
setting->data.v_string[v_int] = '\0';
|
||||
buffer.pos += pad_len;
|
||||
|
||||
break;
|
||||
case XSETTINGS_TYPE_COLOR:
|
||||
result = fetch_ushort (&buffer, &setting->data.v_color.red);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
result = fetch_ushort (&buffer, &setting->data.v_color.green);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
result = fetch_ushort (&buffer, &setting->data.v_color.blue);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
result = fetch_ushort (&buffer, &setting->data.v_color.alpha);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
|
||||
break;
|
||||
default:
|
||||
/* Quietly ignore unknown types */
|
||||
break;
|
||||
}
|
||||
|
||||
setting->type = type;
|
||||
|
||||
result = xsettings_list_insert (&settings, setting);
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
goto out;
|
||||
|
||||
setting = NULL;
|
||||
}
|
||||
|
||||
out:
|
||||
|
||||
if (result != XSETTINGS_SUCCESS)
|
||||
{
|
||||
switch (result)
|
||||
{
|
||||
case XSETTINGS_NO_MEM:
|
||||
fprintf(stderr, "Out of memory reading XSETTINGS property\n");
|
||||
break;
|
||||
case XSETTINGS_ACCESS:
|
||||
fprintf(stderr, "Invalid XSETTINGS property (read off end)\n");
|
||||
break;
|
||||
case XSETTINGS_DUPLICATE_ENTRY:
|
||||
fprintf (stderr, "Duplicate XSETTINGS entry for '%s'\n", setting->name);
|
||||
SDL_FALLTHROUGH;
|
||||
case XSETTINGS_FAILED:
|
||||
SDL_FALLTHROUGH;
|
||||
case XSETTINGS_SUCCESS:
|
||||
SDL_FALLTHROUGH;
|
||||
case XSETTINGS_NO_ENTRY:
|
||||
break;
|
||||
}
|
||||
|
||||
if (setting)
|
||||
xsettings_setting_free (setting);
|
||||
|
||||
xsettings_list_free (settings);
|
||||
settings = NULL;
|
||||
|
||||
}
|
||||
|
||||
return settings;
|
||||
}
|
||||
|
||||
static void
|
||||
read_settings (XSettingsClient *client)
|
||||
{
|
||||
Atom type;
|
||||
int format;
|
||||
unsigned long n_items;
|
||||
unsigned long bytes_after;
|
||||
unsigned char *data;
|
||||
int result;
|
||||
|
||||
int (*old_handler) (Display *, XErrorEvent *);
|
||||
|
||||
XSettingsList *old_list = client->settings;
|
||||
|
||||
client->settings = NULL;
|
||||
|
||||
if (client->manager_window)
|
||||
{
|
||||
old_handler = X11_XSetErrorHandler (ignore_errors);
|
||||
result = X11_XGetWindowProperty (client->display, client->manager_window,
|
||||
client->xsettings_atom, 0, LONG_MAX,
|
||||
False, client->xsettings_atom,
|
||||
&type, &format, &n_items, &bytes_after, &data);
|
||||
X11_XSetErrorHandler (old_handler);
|
||||
|
||||
if (result == Success && type != None)
|
||||
{
|
||||
if (type != client->xsettings_atom)
|
||||
{
|
||||
fprintf (stderr, "Invalid type for XSETTINGS property");
|
||||
}
|
||||
else if (format != 8)
|
||||
{
|
||||
fprintf (stderr, "Invalid format for XSETTINGS property %d", format);
|
||||
}
|
||||
else
|
||||
client->settings = parse_settings (data, n_items);
|
||||
|
||||
X11_XFree (data);
|
||||
}
|
||||
}
|
||||
|
||||
notify_changes (client, old_list);
|
||||
xsettings_list_free (old_list);
|
||||
}
|
||||
|
||||
static void
|
||||
add_events (Display *display,
|
||||
Window window,
|
||||
long mask)
|
||||
{
|
||||
XWindowAttributes attr;
|
||||
|
||||
X11_XGetWindowAttributes (display, window, &attr);
|
||||
X11_XSelectInput (display, window, attr.your_event_mask | mask);
|
||||
}
|
||||
|
||||
static void
|
||||
check_manager_window (XSettingsClient *client)
|
||||
{
|
||||
if (client->manager_window && client->watch)
|
||||
client->watch (client->manager_window, False, 0, client->cb_data);
|
||||
|
||||
if (client->grab)
|
||||
client->grab (client->display);
|
||||
else
|
||||
X11_XGrabServer (client->display);
|
||||
|
||||
client->manager_window = X11_XGetSelectionOwner (client->display,
|
||||
client->selection_atom);
|
||||
if (client->manager_window)
|
||||
X11_XSelectInput (client->display, client->manager_window,
|
||||
PropertyChangeMask | StructureNotifyMask);
|
||||
|
||||
if (client->ungrab)
|
||||
client->ungrab (client->display);
|
||||
else
|
||||
X11_XUngrabServer (client->display);
|
||||
|
||||
X11_XFlush (client->display);
|
||||
|
||||
if (client->manager_window && client->watch)
|
||||
{
|
||||
if (!client->watch (client->manager_window, True,
|
||||
PropertyChangeMask | StructureNotifyMask,
|
||||
client->cb_data))
|
||||
{
|
||||
/* Inability to watch the window probably means that it was destroyed
|
||||
* after we ungrabbed
|
||||
*/
|
||||
client->manager_window = None;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
read_settings (client);
|
||||
}
|
||||
|
||||
XSettingsClient *
|
||||
xsettings_client_new (Display *display,
|
||||
int screen,
|
||||
XSettingsNotifyFunc notify,
|
||||
XSettingsWatchFunc watch,
|
||||
void *cb_data)
|
||||
{
|
||||
return xsettings_client_new_with_grab_funcs (display, screen, notify, watch, cb_data,
|
||||
NULL, NULL);
|
||||
}
|
||||
|
||||
XSettingsClient *
|
||||
xsettings_client_new_with_grab_funcs (Display *display,
|
||||
int screen,
|
||||
XSettingsNotifyFunc notify,
|
||||
XSettingsWatchFunc watch,
|
||||
void *cb_data,
|
||||
XSettingsGrabFunc grab,
|
||||
XSettingsGrabFunc ungrab)
|
||||
{
|
||||
XSettingsClient *client;
|
||||
char buffer[256];
|
||||
char *atom_names[3];
|
||||
Atom atoms[3];
|
||||
|
||||
client = malloc (sizeof *client);
|
||||
if (!client)
|
||||
return NULL;
|
||||
|
||||
client->display = display;
|
||||
client->screen = screen;
|
||||
client->notify = notify;
|
||||
client->watch = watch;
|
||||
client->cb_data = cb_data;
|
||||
client->grab = grab;
|
||||
client->ungrab = ungrab;
|
||||
|
||||
client->manager_window = None;
|
||||
client->settings = NULL;
|
||||
|
||||
sprintf(buffer, "_XSETTINGS_S%d", screen);
|
||||
atom_names[0] = buffer;
|
||||
atom_names[1] = "_XSETTINGS_SETTINGS";
|
||||
atom_names[2] = "MANAGER";
|
||||
|
||||
#ifdef HAVE_XINTERNATOMS
|
||||
XInternAtoms (display, atom_names, 3, False, atoms);
|
||||
#else
|
||||
atoms[0] = X11_XInternAtom (display, atom_names[0], False);
|
||||
atoms[1] = X11_XInternAtom (display, atom_names[1], False);
|
||||
atoms[2] = X11_XInternAtom (display, atom_names[2], False);
|
||||
#endif
|
||||
|
||||
client->selection_atom = atoms[0];
|
||||
client->xsettings_atom = atoms[1];
|
||||
client->manager_atom = atoms[2];
|
||||
|
||||
/* Select on StructureNotify so we get MANAGER events
|
||||
*/
|
||||
add_events (display, RootWindow (display, screen), StructureNotifyMask);
|
||||
|
||||
if (client->watch)
|
||||
client->watch (RootWindow (display, screen), True, StructureNotifyMask,
|
||||
client->cb_data);
|
||||
|
||||
check_manager_window (client);
|
||||
|
||||
return client;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
xsettings_client_set_grab_func (XSettingsClient *client,
|
||||
XSettingsGrabFunc grab)
|
||||
{
|
||||
client->grab = grab;
|
||||
}
|
||||
|
||||
void
|
||||
xsettings_client_set_ungrab_func (XSettingsClient *client,
|
||||
XSettingsGrabFunc ungrab)
|
||||
{
|
||||
client->ungrab = ungrab;
|
||||
}
|
||||
|
||||
void
|
||||
xsettings_client_destroy (XSettingsClient *client)
|
||||
{
|
||||
if (client->watch)
|
||||
client->watch (RootWindow (client->display, client->screen),
|
||||
False, 0, client->cb_data);
|
||||
if (client->manager_window && client->watch)
|
||||
client->watch (client->manager_window, False, 0, client->cb_data);
|
||||
|
||||
xsettings_list_free (client->settings);
|
||||
free (client);
|
||||
}
|
||||
|
||||
XSettingsResult
|
||||
xsettings_client_get_setting (XSettingsClient *client,
|
||||
const char *name,
|
||||
XSettingsSetting **setting)
|
||||
{
|
||||
XSettingsSetting *search = xsettings_list_lookup (client->settings, name);
|
||||
if (search)
|
||||
{
|
||||
*setting = xsettings_setting_copy (search);
|
||||
return *setting ? XSETTINGS_SUCCESS : XSETTINGS_NO_MEM;
|
||||
}
|
||||
else
|
||||
return XSETTINGS_NO_ENTRY;
|
||||
}
|
||||
|
||||
Bool
|
||||
xsettings_client_process_event (XSettingsClient *client,
|
||||
const XEvent *xev)
|
||||
{
|
||||
/* The checks here will not unlikely cause us to reread
|
||||
* the properties from the manager window a number of
|
||||
* times when the manager changes from A->B. But manager changes
|
||||
* are going to be pretty rare.
|
||||
*/
|
||||
if (xev->xany.window == RootWindow (client->display, client->screen))
|
||||
{
|
||||
if (xev->xany.type == ClientMessage &&
|
||||
xev->xclient.message_type == client->manager_atom &&
|
||||
xev->xclient.data.l[1] == client->selection_atom)
|
||||
{
|
||||
check_manager_window (client);
|
||||
return True;
|
||||
}
|
||||
}
|
||||
else if (xev->xany.window == client->manager_window)
|
||||
{
|
||||
if (xev->xany.type == DestroyNotify)
|
||||
{
|
||||
check_manager_window (client);
|
||||
return False;
|
||||
}
|
||||
else if (xev->xany.type == PropertyNotify)
|
||||
{
|
||||
read_settings (client);
|
||||
return True;
|
||||
}
|
||||
}
|
||||
|
||||
return False;
|
||||
}
|
||||
|
||||
XSettingsSetting *
|
||||
xsettings_setting_copy (XSettingsSetting *setting)
|
||||
{
|
||||
XSettingsSetting *result;
|
||||
size_t str_len;
|
||||
|
||||
result = malloc (sizeof *result);
|
||||
if (!result)
|
||||
return NULL;
|
||||
|
||||
str_len = strlen (setting->name);
|
||||
result->name = malloc (str_len + 1);
|
||||
if (!result->name)
|
||||
goto err;
|
||||
|
||||
memcpy (result->name, setting->name, str_len + 1);
|
||||
|
||||
result->type = setting->type;
|
||||
|
||||
switch (setting->type)
|
||||
{
|
||||
case XSETTINGS_TYPE_INT:
|
||||
result->data.v_int = setting->data.v_int;
|
||||
break;
|
||||
case XSETTINGS_TYPE_COLOR:
|
||||
result->data.v_color = setting->data.v_color;
|
||||
break;
|
||||
case XSETTINGS_TYPE_STRING:
|
||||
str_len = strlen (setting->data.v_string);
|
||||
result->data.v_string = malloc (str_len + 1);
|
||||
if (!result->data.v_string)
|
||||
goto err;
|
||||
|
||||
memcpy (result->data.v_string, setting->data.v_string, str_len + 1);
|
||||
break;
|
||||
}
|
||||
|
||||
result->last_change_serial = setting->last_change_serial;
|
||||
|
||||
return result;
|
||||
|
||||
err:
|
||||
if (result->name)
|
||||
free (result->name);
|
||||
free (result);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
XSettingsList *
|
||||
xsettings_list_copy (XSettingsList *list)
|
||||
{
|
||||
XSettingsList *new = NULL;
|
||||
XSettingsList *old_iter = list;
|
||||
XSettingsList *new_iter = NULL;
|
||||
|
||||
while (old_iter)
|
||||
{
|
||||
XSettingsList *new_node;
|
||||
|
||||
new_node = malloc (sizeof *new_node);
|
||||
if (!new_node)
|
||||
goto error;
|
||||
|
||||
new_node->setting = xsettings_setting_copy (old_iter->setting);
|
||||
if (!new_node->setting)
|
||||
{
|
||||
free (new_node);
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (new_iter)
|
||||
new_iter->next = new_node;
|
||||
else
|
||||
new = new_node;
|
||||
|
||||
new_iter = new_node;
|
||||
|
||||
old_iter = old_iter->next;
|
||||
}
|
||||
|
||||
return new;
|
||||
|
||||
error:
|
||||
xsettings_list_free (new);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int
|
||||
xsettings_setting_equal (XSettingsSetting *setting_a,
|
||||
XSettingsSetting *setting_b)
|
||||
{
|
||||
if (setting_a->type != setting_b->type)
|
||||
return 0;
|
||||
|
||||
if (strcmp (setting_a->name, setting_b->name) != 0)
|
||||
return 0;
|
||||
|
||||
switch (setting_a->type)
|
||||
{
|
||||
case XSETTINGS_TYPE_INT:
|
||||
return setting_a->data.v_int == setting_b->data.v_int;
|
||||
case XSETTINGS_TYPE_COLOR:
|
||||
return (setting_a->data.v_color.red == setting_b->data.v_color.red &&
|
||||
setting_a->data.v_color.green == setting_b->data.v_color.green &&
|
||||
setting_a->data.v_color.blue == setting_b->data.v_color.blue &&
|
||||
setting_a->data.v_color.alpha == setting_b->data.v_color.alpha);
|
||||
case XSETTINGS_TYPE_STRING:
|
||||
return strcmp (setting_a->data.v_string, setting_b->data.v_string) == 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
xsettings_setting_free (XSettingsSetting *setting)
|
||||
{
|
||||
if (setting->type == XSETTINGS_TYPE_STRING)
|
||||
free (setting->data.v_string);
|
||||
|
||||
if (setting->name)
|
||||
free (setting->name);
|
||||
|
||||
free (setting);
|
||||
}
|
||||
|
||||
void
|
||||
xsettings_list_free (XSettingsList *list)
|
||||
{
|
||||
while (list)
|
||||
{
|
||||
XSettingsList *next = list->next;
|
||||
|
||||
xsettings_setting_free (list->setting);
|
||||
free (list);
|
||||
|
||||
list = next;
|
||||
}
|
||||
}
|
||||
|
||||
XSettingsResult
|
||||
xsettings_list_insert (XSettingsList **list,
|
||||
XSettingsSetting *setting)
|
||||
{
|
||||
XSettingsList *node;
|
||||
XSettingsList *iter;
|
||||
XSettingsList *last = NULL;
|
||||
|
||||
node = malloc (sizeof *node);
|
||||
if (!node)
|
||||
return XSETTINGS_NO_MEM;
|
||||
node->setting = setting;
|
||||
|
||||
iter = *list;
|
||||
while (iter)
|
||||
{
|
||||
int cmp = strcmp (setting->name, iter->setting->name);
|
||||
|
||||
if (cmp < 0)
|
||||
break;
|
||||
else if (cmp == 0)
|
||||
{
|
||||
free (node);
|
||||
return XSETTINGS_DUPLICATE_ENTRY;
|
||||
}
|
||||
|
||||
last = iter;
|
||||
iter = iter->next;
|
||||
}
|
||||
|
||||
if (last)
|
||||
last->next = node;
|
||||
else
|
||||
*list = node;
|
||||
|
||||
node->next = iter;
|
||||
|
||||
return XSETTINGS_SUCCESS;
|
||||
}
|
||||
|
||||
XSettingsResult
|
||||
xsettings_list_delete (XSettingsList **list,
|
||||
const char *name)
|
||||
{
|
||||
XSettingsList *iter;
|
||||
XSettingsList *last = NULL;
|
||||
|
||||
iter = *list;
|
||||
while (iter)
|
||||
{
|
||||
if (strcmp (name, iter->setting->name) == 0)
|
||||
{
|
||||
if (last)
|
||||
last->next = iter->next;
|
||||
else
|
||||
*list = iter->next;
|
||||
|
||||
xsettings_setting_free (iter->setting);
|
||||
free (iter);
|
||||
|
||||
return XSETTINGS_SUCCESS;
|
||||
}
|
||||
|
||||
last = iter;
|
||||
iter = iter->next;
|
||||
}
|
||||
|
||||
return XSETTINGS_FAILED;
|
||||
}
|
||||
|
||||
XSettingsSetting *
|
||||
xsettings_list_lookup (XSettingsList *list,
|
||||
const char *name)
|
||||
{
|
||||
XSettingsList *iter;
|
||||
|
||||
iter = list;
|
||||
while (iter)
|
||||
{
|
||||
if (strcmp (name, iter->setting->name) == 0)
|
||||
return iter->setting;
|
||||
|
||||
iter = iter->next;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
char
|
||||
xsettings_byte_order (void)
|
||||
{
|
||||
CARD32 myint = 0x01020304;
|
||||
return (*(char *)&myint == 1) ? MSBFirst : LSBFirst;
|
||||
}
|
||||
|
||||
#endif /* SDL_VIDEO_DRIVER_X11 */
|
||||
153
src/video/x11/xsettings-client.h
Normal file
153
src/video/x11/xsettings-client.h
Normal file
|
|
@ -0,0 +1,153 @@
|
|||
/*
|
||||
* Copyright © 2001, 2007 Red Hat, Inc.
|
||||
* Copyright 2024 Igalia S.L.
|
||||
*
|
||||
* Permission to use, copy, modify, distribute, and sell this software and its
|
||||
* documentation for any purpose is hereby granted without fee, provided that
|
||||
* the above copyright notice appear in all copies and that both that
|
||||
* copyright notice and this permission notice appear in supporting
|
||||
* documentation, and that the name of Red Hat not be used in advertising or
|
||||
* publicity pertaining to distribution of the software without specific,
|
||||
* written prior permission. Red Hat makes no representations about the
|
||||
* suitability of this software for any purpose. It is provided "as is"
|
||||
* without express or implied warranty.
|
||||
*
|
||||
* RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL RED HAT
|
||||
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
||||
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
||||
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*
|
||||
* Author: Owen Taylor, Red Hat, Inc.
|
||||
*/
|
||||
#ifndef XSETTINGS_CLIENT_H
|
||||
#define XSETTINGS_CLIENT_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif /* __cplusplus */
|
||||
|
||||
typedef struct _XSettingsBuffer XSettingsBuffer;
|
||||
typedef struct _XSettingsColor XSettingsColor;
|
||||
typedef struct _XSettingsList XSettingsList;
|
||||
typedef struct _XSettingsSetting XSettingsSetting;
|
||||
|
||||
/* Types of settings possible. Enum values correspond to
|
||||
* protocol values.
|
||||
*/
|
||||
typedef enum
|
||||
{
|
||||
XSETTINGS_TYPE_INT = 0,
|
||||
XSETTINGS_TYPE_STRING = 1,
|
||||
XSETTINGS_TYPE_COLOR = 2
|
||||
} XSettingsType;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
XSETTINGS_SUCCESS,
|
||||
XSETTINGS_NO_MEM,
|
||||
XSETTINGS_ACCESS,
|
||||
XSETTINGS_FAILED,
|
||||
XSETTINGS_NO_ENTRY,
|
||||
XSETTINGS_DUPLICATE_ENTRY
|
||||
} XSettingsResult;
|
||||
|
||||
struct _XSettingsBuffer
|
||||
{
|
||||
char byte_order;
|
||||
size_t len;
|
||||
unsigned char *data;
|
||||
unsigned char *pos;
|
||||
};
|
||||
|
||||
struct _XSettingsColor
|
||||
{
|
||||
unsigned short red, green, blue, alpha;
|
||||
};
|
||||
|
||||
struct _XSettingsList
|
||||
{
|
||||
XSettingsSetting *setting;
|
||||
XSettingsList *next;
|
||||
};
|
||||
|
||||
struct _XSettingsSetting
|
||||
{
|
||||
char *name;
|
||||
XSettingsType type;
|
||||
|
||||
union {
|
||||
int v_int;
|
||||
char *v_string;
|
||||
XSettingsColor v_color;
|
||||
} data;
|
||||
|
||||
unsigned long last_change_serial;
|
||||
};
|
||||
|
||||
XSettingsSetting *xsettings_setting_copy (XSettingsSetting *setting);
|
||||
void xsettings_setting_free (XSettingsSetting *setting);
|
||||
int xsettings_setting_equal (XSettingsSetting *setting_a,
|
||||
XSettingsSetting *setting_b);
|
||||
|
||||
void xsettings_list_free (XSettingsList *list);
|
||||
XSettingsList *xsettings_list_copy (XSettingsList *list);
|
||||
XSettingsResult xsettings_list_insert (XSettingsList **list,
|
||||
XSettingsSetting *setting);
|
||||
XSettingsSetting *xsettings_list_lookup (XSettingsList *list,
|
||||
const char *name);
|
||||
XSettingsResult xsettings_list_delete (XSettingsList **list,
|
||||
const char *name);
|
||||
|
||||
char xsettings_byte_order (void);
|
||||
|
||||
#define XSETTINGS_PAD(n,m) ((n + m - 1) & (~(m-1)))
|
||||
|
||||
typedef struct _XSettingsClient XSettingsClient;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
XSETTINGS_ACTION_NEW,
|
||||
XSETTINGS_ACTION_CHANGED,
|
||||
XSETTINGS_ACTION_DELETED
|
||||
} XSettingsAction;
|
||||
|
||||
typedef void (*XSettingsNotifyFunc) (const char *name,
|
||||
XSettingsAction action,
|
||||
XSettingsSetting *setting,
|
||||
void *cb_data);
|
||||
typedef Bool (*XSettingsWatchFunc) (Window window,
|
||||
Bool is_start,
|
||||
long mask,
|
||||
void *cb_data);
|
||||
typedef void (*XSettingsGrabFunc) (Display *display);
|
||||
|
||||
XSettingsClient *xsettings_client_new (Display *display,
|
||||
int screen,
|
||||
XSettingsNotifyFunc notify,
|
||||
XSettingsWatchFunc watch,
|
||||
void *cb_data);
|
||||
XSettingsClient *xsettings_client_new_with_grab_funcs (Display *display,
|
||||
int screen,
|
||||
XSettingsNotifyFunc notify,
|
||||
XSettingsWatchFunc watch,
|
||||
void *cb_data,
|
||||
XSettingsGrabFunc grab,
|
||||
XSettingsGrabFunc ungrab);
|
||||
void xsettings_client_set_grab_func (XSettingsClient *client,
|
||||
XSettingsGrabFunc grab);
|
||||
void xsettings_client_set_ungrab_func (XSettingsClient *client,
|
||||
XSettingsGrabFunc ungrab);
|
||||
void xsettings_client_destroy (XSettingsClient *client);
|
||||
Bool xsettings_client_process_event (XSettingsClient *client,
|
||||
const XEvent *xev);
|
||||
XSettingsResult xsettings_client_get_setting (XSettingsClient *client,
|
||||
const char *name,
|
||||
XSettingsSetting **setting);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif /* __cplusplus */
|
||||
|
||||
#endif /* XSETTINGS_CLIENT_H */
|
||||
Loading…
Add table
Add a link
Reference in a new issue