/*
- * vim:ts=8:expandtab
+ * vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
- *
- * © 2009 Michael Stapelberg and contributors
- *
- * See file LICENSE for license information.
+ * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
*
* xcb.c: Helper functions for easier usage of XCB
*
*/
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <xcb/xcb.h>
-#include <xcb/xcb_keysyms.h>
+#include "all.h"
-#include "util.h"
-#include "xcb.h"
-
-TAILQ_HEAD(cached_fonts_head, Font) cached_fonts = TAILQ_HEAD_INITIALIZER(cached_fonts);
-SLIST_HEAD(colorpixel_head, Colorpixel) colorpixels;
unsigned int xcb_numlock_mask;
/*
- * Loads a font for usage, getting its height. This function is used very often, so it
- * maintains a cache.
+ * Convenience wrapper around xcb_create_window which takes care of depth, generating an ID and checking
+ * for errors.
*
*/
-i3Font *load_font(xcb_connection_t *conn, const char *pattern) {
- /* Check if we got the font cached */
- i3Font *font;
- TAILQ_FOREACH(font, &cached_fonts, fonts)
- if (strcmp(font->pattern, pattern) == 0)
- return font;
-
- i3Font *new = smalloc(sizeof(i3Font));
- xcb_void_cookie_t font_cookie;
- xcb_list_fonts_with_info_cookie_t info_cookie;
-
- /* Send all our requests first */
- new->id = xcb_generate_id(conn);
- font_cookie = xcb_open_font_checked(conn, new->id, strlen(pattern), pattern);
- info_cookie = xcb_list_fonts_with_info(conn, 1, strlen(pattern), pattern);
-
- check_error(conn, font_cookie, "Could not open font");
-
- /* Get information (height/name) for this font */
- xcb_list_fonts_with_info_reply_t *reply = xcb_list_fonts_with_info_reply(conn, info_cookie, NULL);
- exit_if_null(reply, "Could not load font \"%s\"\n", pattern);
-
- if (asprintf(&(new->name), "%.*s", xcb_list_fonts_with_info_name_length(reply),
- xcb_list_fonts_with_info_name(reply)) == -1)
- die("asprintf() failed\n");
- new->pattern = sstrdup(pattern);
- new->height = reply->font_ascent + reply->font_descent;
-
- /* Insert into cache */
- TAILQ_INSERT_TAIL(&cached_fonts, new, fonts);
-
- return new;
+xcb_window_t create_window(xcb_connection_t *conn, Rect dims,
+ uint16_t depth, xcb_visualid_t visual, uint16_t window_class,
+ enum xcursor_cursor_t cursor, bool map, uint32_t mask, uint32_t *values) {
+ xcb_window_t result = xcb_generate_id(conn);
+
+ /* If the window class is XCB_WINDOW_CLASS_INPUT_ONLY, we copy depth and
+ * visual id from the parent window. */
+ if (window_class == XCB_WINDOW_CLASS_INPUT_ONLY) {
+ depth = XCB_COPY_FROM_PARENT;
+ visual = XCB_COPY_FROM_PARENT;
+ }
+
+ xcb_create_window(conn,
+ depth,
+ result, /* the window id */
+ root, /* parent == root */
+ dims.x, dims.y, dims.width, dims.height, /* dimensions */
+ 0, /* border = 0, we draw our own */
+ window_class,
+ visual,
+ mask,
+ values);
+
+ /* Set the cursor */
+ if (xcursor_supported) {
+ mask = XCB_CW_CURSOR;
+ values[0] = xcursor_get_cursor(cursor);
+ xcb_change_window_attributes(conn, result, mask, values);
+ } else {
+ xcb_cursor_t cursor_id = xcb_generate_id(conn);
+ i3Font cursor_font = load_font("cursor", false);
+ int xcb_cursor = xcursor_get_xcb_cursor(cursor);
+ xcb_create_glyph_cursor(conn, cursor_id, cursor_font.specific.xcb.id,
+ cursor_font.specific.xcb.id, xcb_cursor, xcb_cursor + 1, 0, 0, 0,
+ 65535, 65535, 65535);
+ xcb_change_window_attributes(conn, result, XCB_CW_CURSOR, &cursor_id);
+ xcb_free_cursor(conn, cursor_id);
+ }
+
+ /* Map the window (= make it visible) */
+ if (map)
+ xcb_map_window(conn, result);
+
+ return result;
}
/*
- * Returns the colorpixel to use for the given hex color (think of HTML).
+ * Draws a line from x,y to to_x,to_y using the given color
*
- * The hex_color has to start with #, for example #FF00FF.
+ */
+void xcb_draw_line(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext_t gc,
+ uint32_t colorpixel, uint32_t x, uint32_t y, uint32_t to_x, uint32_t to_y) {
+ xcb_change_gc(conn, gc, XCB_GC_FOREGROUND, (uint32_t[]){colorpixel});
+ xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, drawable, gc, 2,
+ (xcb_point_t[]){{x, y}, {to_x, to_y}});
+}
+
+/*
+ * Draws a rectangle from x,y with width,height using the given color
*
- * NOTE that get_colorpixel() does _NOT_ check the given color code for validity.
- * This has to be done by the caller.
+ */
+void xcb_draw_rect(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext_t gc,
+ uint32_t colorpixel, uint32_t x, uint32_t y, uint32_t width, uint32_t height) {
+ xcb_change_gc(conn, gc, XCB_GC_FOREGROUND, (uint32_t[]){colorpixel});
+ xcb_rectangle_t rect = {x, y, width, height};
+ xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
+}
+
+/*
+ * Generates a configure_notify_event with absolute coordinates (relative to the X root
+ * window, not to the client’s frame) for the given client.
*
*/
-uint32_t get_colorpixel(xcb_connection_t *conn, char *hex) {
- /* Lookup this colorpixel in the cache */
- struct Colorpixel *colorpixel;
- SLIST_FOREACH(colorpixel, &(colorpixels), colorpixels)
- if (strcmp(colorpixel->hex, hex) == 0)
- return colorpixel->pixel;
-
- #define RGB_8_TO_16(i) (65535 * ((i) & 0xFF) / 255)
- char strgroups[3][3] = {{hex[1], hex[2], '\0'},
- {hex[3], hex[4], '\0'},
- {hex[5], hex[6], '\0'}};
- int rgb16[3] = {RGB_8_TO_16(strtol(strgroups[0], NULL, 16)),
- RGB_8_TO_16(strtol(strgroups[1], NULL, 16)),
- RGB_8_TO_16(strtol(strgroups[2], NULL, 16))};
-
- xcb_screen_t *root_screen = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
- xcb_alloc_color_reply_t *reply;
-
- reply = xcb_alloc_color_reply(conn, xcb_alloc_color(conn, root_screen->default_colormap,
- rgb16[0], rgb16[1], rgb16[2]), NULL);
-
- if (!reply) {
- LOG("Could not allocate color\n");
- exit(1);
- }
+void fake_absolute_configure_notify(Con *con) {
+ xcb_rectangle_t absolute;
+ if (con->window == NULL)
+ return;
- uint32_t pixel = reply->pixel;
- free(reply);
+ absolute.x = con->rect.x + con->window_rect.x;
+ absolute.y = con->rect.y + con->window_rect.y;
+ absolute.width = con->window_rect.width;
+ absolute.height = con->window_rect.height;
- /* Store the result in the cache */
- struct Colorpixel *cache_pixel = scalloc(sizeof(struct Colorpixel));
- cache_pixel->hex = sstrdup(hex);
- cache_pixel->pixel = pixel;
+ DLOG("fake rect = (%d, %d, %d, %d)\n", absolute.x, absolute.y, absolute.width, absolute.height);
- SLIST_INSERT_HEAD(&(colorpixels), cache_pixel, colorpixels);
+ fake_configure_notify(conn, absolute, con->window->id, con->border_width);
+}
- return pixel;
+/*
+ * Sends the WM_TAKE_FOCUS ClientMessage to the given window
+ *
+ */
+void send_take_focus(xcb_window_t window, xcb_timestamp_t timestamp) {
+ /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
+ * In order to properly initialize these bytes, we allocate 32 bytes even
+ * though we only need less for an xcb_configure_notify_event_t */
+ void *event = scalloc(32, 1);
+ xcb_client_message_event_t *ev = event;
+
+ ev->response_type = XCB_CLIENT_MESSAGE;
+ ev->window = window;
+ ev->type = A_WM_PROTOCOLS;
+ ev->format = 32;
+ ev->data.data32[0] = A_WM_TAKE_FOCUS;
+ ev->data.data32[1] = timestamp;
+
+ DLOG("Sending WM_TAKE_FOCUS to the client\n");
+ xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
+ free(event);
}
/*
- * Convenience wrapper around xcb_create_window which takes care of depth, generating an ID and checking
- * for errors.
+ * Raises the given window (typically client->frame) above all other windows
*
*/
-xcb_window_t create_window(xcb_connection_t *conn, Rect dims, uint16_t window_class, int cursor,
- uint32_t mask, uint32_t *values) {
- xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
- xcb_window_t result = xcb_generate_id(conn);
- xcb_cursor_t cursor_id = xcb_generate_id(conn);
+void xcb_raise_window(xcb_connection_t *conn, xcb_window_t window) {
+ uint32_t values[] = {XCB_STACK_MODE_ABOVE};
+ xcb_configure_window(conn, window, XCB_CONFIG_WINDOW_STACK_MODE, values);
+}
- /* If the window class is XCB_WINDOW_CLASS_INPUT_ONLY, depth has to be 0 */
- uint16_t depth = (window_class == XCB_WINDOW_CLASS_INPUT_ONLY ? 0 : XCB_COPY_FROM_PARENT);
+/*
+ * Configures the given window to have the size/position specified by given rect
+ *
+ */
+void xcb_set_window_rect(xcb_connection_t *conn, xcb_window_t window, Rect r) {
+ xcb_void_cookie_t cookie;
+ cookie = xcb_configure_window(conn, window,
+ XCB_CONFIG_WINDOW_X |
+ XCB_CONFIG_WINDOW_Y |
+ XCB_CONFIG_WINDOW_WIDTH |
+ XCB_CONFIG_WINDOW_HEIGHT,
+ &(r.x));
+ /* ignore events which are generated because we configured a window */
+ add_ignore_event(cookie.sequence, -1);
+}
- /* Use the default cursor (left pointer) */
- if (cursor > -1) {
- i3Font *cursor_font = load_font(conn, "cursor");
- xcb_create_glyph_cursor(conn, cursor_id, cursor_font->id, cursor_font->id,
- XCB_CURSOR_LEFT_PTR, XCB_CURSOR_LEFT_PTR + 1,
- 0, 0, 0, 65535, 65535, 65535);
+/*
+ * Returns the first supported _NET_WM_WINDOW_TYPE atom.
+ *
+ */
+xcb_atom_t xcb_get_preferred_window_type(xcb_get_property_reply_t *reply) {
+ if (reply == NULL || xcb_get_property_value_length(reply) == 0)
+ return XCB_NONE;
+
+ xcb_atom_t *atoms;
+ if ((atoms = xcb_get_property_value(reply)) == NULL)
+ return XCB_NONE;
+
+ for (int i = 0; i < xcb_get_property_value_length(reply) / (reply->format / 8); i++) {
+ if (atoms[i] == A__NET_WM_WINDOW_TYPE_NORMAL ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_DIALOG ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_UTILITY ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_TOOLBAR ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_SPLASH ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_MENU ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_DROPDOWN_MENU ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_POPUP_MENU ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_TOOLTIP ||
+ atoms[i] == A__NET_WM_WINDOW_TYPE_NOTIFICATION) {
+ return atoms[i];
}
+ }
- xcb_create_window(conn,
- depth,
- result, /* the window id */
- root, /* parent == root */
- dims.x, dims.y, dims.width, dims.height, /* dimensions */
- 0, /* border = 0, we draw our own */
- window_class,
- XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
- mask,
- values);
-
- if (cursor > -1)
- xcb_change_window_attributes(conn, result, XCB_CW_CURSOR, &cursor_id);
-
- /* Map the window (= make it visible) */
- xcb_map_window(conn, result);
-
- return result;
+ return XCB_NONE;
}
/*
- * Changes a single value in the graphic context (so one doesn’t have to define an array of values)
+ * Returns true if the given reply contains the given atom.
*
*/
-void xcb_change_gc_single(xcb_connection_t *conn, xcb_gcontext_t gc, uint32_t mask, uint32_t value) {
- xcb_change_gc(conn, gc, mask, &value);
+bool xcb_reply_contains_atom(xcb_get_property_reply_t *prop, xcb_atom_t atom) {
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0)
+ return false;
+
+ xcb_atom_t *atoms;
+ if ((atoms = xcb_get_property_value(prop)) == NULL)
+ return false;
+
+ for (int i = 0; i < xcb_get_property_value_length(prop) / (prop->format / 8); i++)
+ if (atoms[i] == atom)
+ return true;
+
+ return false;
}
-/*
- * Draws a line from x,y to to_x,to_y using the given color
+/**
+ * Moves the mouse pointer into the middle of rect.
*
*/
-void xcb_draw_line(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext_t gc,
- uint32_t colorpixel, uint32_t x, uint32_t y, uint32_t to_x, uint32_t to_y) {
- xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, colorpixel);
- xcb_point_t points[] = {{x, y}, {to_x, to_y}};
- xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, drawable, gc, 2, points);
+void xcb_warp_pointer_rect(xcb_connection_t *conn, Rect *rect) {
+ int mid_x = rect->x + (rect->width / 2);
+ int mid_y = rect->y + (rect->height / 2);
+
+ LOG("warp pointer to: %d %d\n", mid_x, mid_y);
+ xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
}
/*
- * Draws a rectangle from x,y with width,height using the given color
+ * Set the cursor of the root window to the given cursor id.
+ * This function should only be used if xcursor_supported == false.
+ * Otherwise, use xcursor_set_root_cursor().
*
*/
-void xcb_draw_rect(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext_t gc,
- uint32_t colorpixel, uint32_t x, uint32_t y, uint32_t width, uint32_t height) {
- xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, colorpixel);
- xcb_rectangle_t rect = {x, y, width, height};
- xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
+void xcb_set_root_cursor(int cursor) {
+ xcb_cursor_t cursor_id = xcb_generate_id(conn);
+ i3Font cursor_font = load_font("cursor", false);
+ int xcb_cursor = xcursor_get_xcb_cursor(cursor);
+ xcb_create_glyph_cursor(conn, cursor_id, cursor_font.specific.xcb.id,
+ cursor_font.specific.xcb.id, xcb_cursor, xcb_cursor + 1, 0, 0, 0,
+ 65535, 65535, 65535);
+ xcb_change_window_attributes(conn, root, XCB_CW_CURSOR, &cursor_id);
+ xcb_free_cursor(conn, cursor_id);
+ xcb_flush(conn);
}
/*
- * Generates a configure_notify event and sends it to the given window
- * Applications need this to think they’ve configured themselves correctly.
- * The truth is, however, that we will manage them.
+ * Get depth of visual specified by visualid
*
*/
-void fake_configure_notify(xcb_connection_t *conn, Rect r, xcb_window_t window) {
- xcb_configure_notify_event_t generated_event;
-
- generated_event.event = window;
- generated_event.window = window;
- generated_event.response_type = XCB_CONFIGURE_NOTIFY;
-
- generated_event.x = r.x;
- generated_event.y = r.y;
- generated_event.width = r.width;
- generated_event.height = r.height;
+uint16_t get_visual_depth(xcb_visualid_t visual_id) {
+ xcb_depth_iterator_t depth_iter;
+
+ depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
+ for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
+ xcb_visualtype_iterator_t visual_iter;
+
+ visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
+ for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
+ if (visual_id == visual_iter.data->visual_id) {
+ return depth_iter.data->depth;
+ }
+ }
+ }
+ return 0;
+}
- generated_event.border_width = 0;
- generated_event.above_sibling = XCB_NONE;
- generated_event.override_redirect = false;
+/*
+ * Get visual type specified by visualid
+ *
+ */
+xcb_visualtype_t *get_visualtype_by_id(xcb_visualid_t visual_id) {
+ xcb_depth_iterator_t depth_iter;
+
+ depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
+ for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
+ xcb_visualtype_iterator_t visual_iter;
+
+ visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
+ for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
+ if (visual_id == visual_iter.data->visual_id) {
+ return visual_iter.data;
+ }
+ }
+ }
+ return 0;
+}
- xcb_send_event(conn, false, window, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char*)&generated_event);
- xcb_flush(conn);
+/*
+ * Get visualid with specified depth
+ *
+ */
+xcb_visualid_t get_visualid_by_depth(uint16_t depth) {
+ xcb_depth_iterator_t depth_iter;
+
+ depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
+ for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
+ if (depth_iter.data->depth != depth)
+ continue;
+
+ xcb_visualtype_iterator_t visual_iter;
+
+ visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
+ if (!visual_iter.rem)
+ continue;
+ return visual_iter.data->visual_id;
+ }
+ return 0;
+}
- LOG("Told the client it is at %dx%d with %dx%d\n", r.x, r.y, r.width, r.height);
+/*
+ * Add an atom to a list of atoms the given property defines.
+ * This is useful, for example, for manipulating _NET_WM_STATE.
+ *
+ */
+void xcb_add_property_atom(xcb_connection_t *conn, xcb_window_t window, xcb_atom_t property, xcb_atom_t atom) {
+ xcb_change_property(conn, XCB_PROP_MODE_APPEND, window, property, XCB_ATOM_ATOM, 32, 1, (uint32_t[]){atom});
}
/*
- * Finds out which modifier mask is the one for numlock, as the user may change this.
+ * Remove an atom from a list of atoms the given property defines without
+ * removing any other potentially set atoms. This is useful, for example, for
+ * manipulating _NET_WM_STATE.
*
*/
-void xcb_get_numlock_mask(xcb_connection_t *conn) {
- xcb_key_symbols_t *keysyms;
- xcb_get_modifier_mapping_cookie_t cookie;
- xcb_get_modifier_mapping_reply_t *reply;
- xcb_keycode_t *modmap, numlock;
- int mask, i;
- const int masks[8] = { XCB_MOD_MASK_SHIFT,
- XCB_MOD_MASK_LOCK,
- XCB_MOD_MASK_CONTROL,
- XCB_MOD_MASK_1,
- XCB_MOD_MASK_2,
- XCB_MOD_MASK_3,
- XCB_MOD_MASK_4,
- XCB_MOD_MASK_5 };
-
- /* Request the modifier map */
- cookie = xcb_get_modifier_mapping_unchecked(conn);
-
- /* Get the keysymbols */
- keysyms = xcb_key_symbols_alloc(conn);
-
- if ((reply = xcb_get_modifier_mapping_reply(conn, cookie, NULL)) == NULL) {
- xcb_key_symbols_free(keysyms);
- return;
+void xcb_remove_property_atom(xcb_connection_t *conn, xcb_window_t window, xcb_atom_t property, xcb_atom_t atom) {
+ xcb_grab_server(conn);
+
+ xcb_get_property_reply_t *reply =
+ xcb_get_property_reply(conn,
+ xcb_get_property(conn, false, window, property, XCB_GET_PROPERTY_TYPE_ANY, 0, 4096), NULL);
+ if (reply == NULL || xcb_get_property_value_length(reply) == 0)
+ goto release_grab;
+ xcb_atom_t *atoms = xcb_get_property_value(reply);
+ if (atoms == NULL) {
+ goto release_grab;
+ }
+
+ {
+ int num = 0;
+ const int current_size = xcb_get_property_value_length(reply) / (reply->format / 8);
+ xcb_atom_t values[current_size];
+ for (int i = 0; i < current_size; i++) {
+ if (atoms[i] != atom)
+ values[num++] = atoms[i];
}
- modmap = xcb_get_modifier_mapping_keycodes(reply);
-
- /* Get the keycode for numlock */
- numlock = xcb_key_symbols_get_keycode(keysyms, XCB_NUM_LOCK);
+ xcb_change_property(conn, XCB_PROP_MODE_REPLACE, window, property, XCB_ATOM_ATOM, 32, num, values);
+ }
- /* Check all modifiers (Mod1-Mod5, Shift, Control, Lock) */
- for (mask = 0; mask < sizeof(masks); mask++)
- for (i = 0; i < reply->keycodes_per_modifier; i++)
- if (modmap[(mask * reply->keycodes_per_modifier) + i] == numlock)
- xcb_numlock_mask = masks[mask];
+release_grab:
+ FREE(reply);
+ xcb_ungrab_server(conn);
+}
- xcb_key_symbols_free(keysyms);
- free(reply);
+/*
+ * Grab the specified buttons on a window when managing it.
+ *
+ */
+void xcb_grab_buttons(xcb_connection_t *conn, xcb_window_t window, int *buttons) {
+ int i = 0;
+ while (buttons[i] > 0) {
+ xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS, XCB_GRAB_MODE_SYNC,
+ XCB_GRAB_MODE_ASYNC, root, XCB_NONE, buttons[i], XCB_BUTTON_MASK_ANY);
+
+ i++;
+ }
}
projects / i3 / i3 / blobdiff