diff options
Diffstat (limited to 'src/WindowUtils.cpp')
| -rw-r--r-- | src/WindowUtils.cpp | 274 |
1 files changed, 271 insertions, 3 deletions
diff --git a/src/WindowUtils.cpp b/src/WindowUtils.cpp index 057e95f..7631e4d 100644 --- a/src/WindowUtils.cpp +++ b/src/WindowUtils.cpp @@ -7,8 +7,31 @@ #include <stdbool.h> #include <stdio.h> #include <string.h> +#include <poll.h> + +#define MAX_PROPERTY_VALUE_LEN 4096 namespace gsr { + static unsigned char* window_get_property(Display *dpy, Window window, Atom property_type, const char *property_name, unsigned int *property_size) { + Atom ret_property_type = None; + int ret_format = 0; + unsigned long num_items = 0; + unsigned long num_remaining_bytes = 0; + unsigned char *data = nullptr; + const Atom atom = XInternAtom(dpy, property_name, False); + if(XGetWindowProperty(dpy, window, atom, 0, MAX_PROPERTY_VALUE_LEN / 4, False, property_type, &ret_property_type, &ret_format, &num_items, &num_remaining_bytes, &data) != Success || !data) { + return nullptr; + } + + if(ret_property_type != property_type) { + XFree(data); + return nullptr; + } + + *property_size = (ret_format / (32 / sizeof(long))) * num_items; + return data; + } + static bool window_has_atom(Display *dpy, Window window, Atom atom) { Atom type; unsigned long len, bytes_left; @@ -160,7 +183,7 @@ namespace gsr { return str; } - static std::string string_string(const char *str) { + static std::string strip_strip(const char *str) { int len = 0; str = strip(str, &len); return std::string(str, len); @@ -175,7 +198,7 @@ namespace gsr { // Window title is not always ideal (for example for a browser), but for games its pretty much required char *window_title = get_window_title(dpy, focused_window); if(window_title) { - result = string_string(window_title); + result = strip_strip(window_title); XFree(window_title); return result; } @@ -183,10 +206,255 @@ namespace gsr { XClassHint class_hint = {nullptr, nullptr}; XGetClassHint(dpy, focused_window, &class_hint); if(class_hint.res_class) { - result = string_string(class_hint.res_class); + result = strip_strip(class_hint.res_class); return result; } return result; } + + mgl::vec2i get_cursor_position(Display *dpy, Window *window) { + Window root_window = None; + *window = None; + int dummy_i; + unsigned int dummy_u; + mgl::vec2i root_pos; + XQueryPointer(dpy, DefaultRootWindow(dpy), &root_window, window, &root_pos.x, &root_pos.y, &dummy_i, &dummy_i, &dummy_u); + + // This dumb shit is done to satisfy gnome wayland. Only set |window| if a valid x11 window is focused + if(window) { + XWindowAttributes attr; + if(XGetWindowAttributes(dpy, *window, &attr) && attr.override_redirect) + *window = None; + + int revert_to = 0; + Window input_focus_window = None; + if(XGetInputFocus(dpy, &input_focus_window, &revert_to)) { + if(input_focus_window) { + if(XGetWindowAttributes(dpy, input_focus_window, &attr) && attr.override_redirect) + *window = None; + } else { + *window = None; + } + } + } + + return root_pos; + } + + typedef struct { + unsigned long flags; + unsigned long functions; + unsigned long decorations; + long input_mode; + unsigned long status; + } MotifHints; + + #define MWM_HINTS_DECORATIONS 2 + + #define MWM_DECOR_NONE 0 + #define MWM_DECOR_ALL 1 + + static void window_set_decorations_visible(Display *display, Window window, bool visible) { + const Atom motif_wm_hints_atom = XInternAtom(display, "_MOTIF_WM_HINTS", False); + MotifHints motif_hints; + memset(&motif_hints, 0, sizeof(motif_hints)); + motif_hints.flags = MWM_HINTS_DECORATIONS; + motif_hints.decorations = visible ? MWM_DECOR_ALL : MWM_DECOR_NONE; + XChangeProperty(display, window, motif_wm_hints_atom, motif_wm_hints_atom, 32, PropModeReplace, (unsigned char*)&motif_hints, sizeof(motif_hints) / sizeof(long)); + } + + static bool create_window_get_center_position_kde(Display *display, mgl::vec2i &position) { + const int size = 1; + XSetWindowAttributes window_attr; + window_attr.event_mask = StructureNotifyMask; + window_attr.background_pixel = 0; + const Window window = XCreateWindow(display, DefaultRootWindow(display), 0, 0, size, size, 0, CopyFromParent, InputOutput, CopyFromParent, CWBackPixel | CWEventMask, &window_attr); + if(!window) + return false; + + const Atom net_wm_window_type_atom = XInternAtom(display, "_NET_WM_WINDOW_TYPE", False); + const Atom net_wm_window_type_notification_atom = XInternAtom(display, "_NET_WM_WINDOW_TYPE_NOTIFICATION", False); + const Atom net_wm_window_type_utility = XInternAtom(display, "_NET_WM_WINDOW_TYPE_UTILITY", False); + const Atom net_wm_window_opacity = XInternAtom(display, "_NET_WM_WINDOW_OPACITY", False); + + const Atom window_type_atoms[2] = { + net_wm_window_type_notification_atom, + net_wm_window_type_utility + }; + XChangeProperty(display, window, net_wm_window_type_atom, XA_ATOM, 32, PropModeReplace, (const unsigned char*)window_type_atoms, 2L); + + const double alpha = 0.0; + const unsigned long opacity = (unsigned long)(0xFFFFFFFFul * alpha); + XChangeProperty(display, window, net_wm_window_opacity, XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&opacity, 1L); + + window_set_decorations_visible(display, window, false); + + XSizeHints *size_hints = XAllocSizeHints(); + size_hints->width = size; + size_hints->height = size; + size_hints->min_width = size; + size_hints->min_height = size; + size_hints->max_width = size; + size_hints->max_height = size; + size_hints->flags = PSize | PMinSize | PMaxSize; + XSetWMNormalHints(display, window, size_hints); + XFree(size_hints); + + XMapWindow(display, window); + XFlush(display); + + bool got_data = false; + const int x_fd = XConnectionNumber(display); + XEvent xev; + while(true) { + struct pollfd poll_fd; + poll_fd.fd = x_fd; + poll_fd.events = POLLIN; + poll_fd.revents = 0; + const int fds_ready = poll(&poll_fd, 1, 1000); + if(fds_ready == 0) { + fprintf(stderr, "Error: timed out waiting for ConfigureNotify after XCreateWindow\n"); + break; + } else if(fds_ready == -1 || !(poll_fd.revents & POLLIN)) { + continue; + } + + XNextEvent(display, &xev); + if(xev.type == ConfigureNotify && xev.xconfigure.window == window) { + got_data = xev.xconfigure.x > 0 && xev.xconfigure.y > 0; + position.x = xev.xconfigure.x + xev.xconfigure.width / 2; + position.y = xev.xconfigure.y + xev.xconfigure.height / 2; + break; + } + } + + XDestroyWindow(display, window); + XFlush(display); + + return got_data; + } + + static bool create_window_get_center_position_gnome(Display *display, mgl::vec2i &position) { + const int size = 32; + XSetWindowAttributes window_attr; + window_attr.event_mask = StructureNotifyMask | ExposureMask; + window_attr.background_pixel = 0; + const Window window = XCreateWindow(display, DefaultRootWindow(display), 0, 0, size, size, 0, CopyFromParent, InputOutput, CopyFromParent, CWBackPixel | CWEventMask, &window_attr); + if(!window) + return false; + + const Atom net_wm_window_opacity = XInternAtom(display, "_NET_WM_WINDOW_OPACITY", False); + const double alpha = 0.0; + const unsigned long opacity = (unsigned long)(0xFFFFFFFFul * alpha); + XChangeProperty(display, window, net_wm_window_opacity, XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&opacity, 1L); + + window_set_decorations_visible(display, window, false); + + XSizeHints *size_hints = XAllocSizeHints(); + size_hints->width = size; + size_hints->height = size; + size_hints->min_width = size; + size_hints->min_height = size; + size_hints->max_width = size; + size_hints->max_height = size; + size_hints->flags = PSize | PMinSize | PMaxSize; + XSetWMNormalHints(display, window, size_hints); + XFree(size_hints); + + XMapWindow(display, window); + XFlush(display); + + bool got_data = false; + const int x_fd = XConnectionNumber(display); + XEvent xev; + while(true) { + struct pollfd poll_fd; + poll_fd.fd = x_fd; + poll_fd.events = POLLIN; + poll_fd.revents = 0; + const int fds_ready = poll(&poll_fd, 1, 1000); + if(fds_ready == 0) { + fprintf(stderr, "Error: timed out waiting for MapNotify/ConfigureNotify after XCreateWindow\n"); + break; + } else if(fds_ready == -1 || !(poll_fd.revents & POLLIN)) { + continue; + } + + XNextEvent(display, &xev); + if(xev.type == MapNotify && xev.xmap.window == window) { + int x = 0; + int y = 0; + Window w = None; + XTranslateCoordinates(display, window, DefaultRootWindow(display), 0, 0, &x, &y, &w); + + got_data = x > 0 && y > 0; + position.x = x + size / 2; + position.y = y + size / 2; + if(got_data) + break; + } else if(xev.type == ConfigureNotify && xev.xconfigure.window == window) { + got_data = xev.xconfigure.x > 0 && xev.xconfigure.y > 0; + position.x = xev.xconfigure.x + xev.xconfigure.width / 2; + position.y = xev.xconfigure.y + xev.xconfigure.height / 2; + if(got_data) + break; + } + } + + XDestroyWindow(display, window); + XFlush(display); + + return got_data; + } + + mgl::vec2i create_window_get_center_position(Display *display) { + mgl::vec2i pos; + if(!create_window_get_center_position_kde(display, pos)) { + pos.x = 0; + pos.y = 0; + create_window_get_center_position_gnome(display, pos); + } + return pos; + } + + std::string get_window_manager_name(Display *display) { + std::string wm_name; + unsigned int property_size = 0; + Window window = None; + + unsigned char *net_supporting_wm_check = window_get_property(display, DefaultRootWindow(display), XA_WINDOW, "_NET_SUPPORTING_WM_CHECK", &property_size); + if(net_supporting_wm_check) { + if(property_size == 8) + window = *(Window*)net_supporting_wm_check; + XFree(net_supporting_wm_check); + } + + if(!window) { + unsigned char *win_supporting_wm_check = window_get_property(display, DefaultRootWindow(display), XA_WINDOW, "_WIN_SUPPORTING_WM_CHECK", &property_size); + if(win_supporting_wm_check) { + if(property_size == 8) + window = *(Window*)win_supporting_wm_check; + XFree(win_supporting_wm_check); + } + } + + if(!window) + return wm_name; + + char *window_title = get_window_title(display, window); + if(window_title) { + wm_name = strip_strip(window_title); + XFree(window_title); + } + + return wm_name; + } + + bool is_compositor_running(Display *dpy, int screen) { + char prop_name[20]; + snprintf(prop_name, sizeof(prop_name), "_NET_WM_CM_S%d", screen); + Atom prop_atom = XInternAtom(dpy, prop_name, False); + return XGetSelectionOwner(dpy, prop_atom) != None; + } }
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