+#undef I3__FILE__
+#define I3__FILE__ "xcb.c"
/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
- *
- * © 2009-2010 Michael Stapelberg and contributors
- *
- * See file LICENSE for license information.
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
* xcb.c: Helper functions for easier usage of XCB
*
*/
-
#include "all.h"
-TAILQ_HEAD(cached_fonts_head, Font) cached_fonts = TAILQ_HEAD_INITIALIZER(cached_fonts);
unsigned int xcb_numlock_mask;
-/*
- * Loads a font for usage, getting its height. This function is used very often, so it
- * maintains a cache.
- *
- */
-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 for errors. If errors, fall back to default font. */
- xcb_generic_error_t *error = xcb_request_check(conn, font_cookie);
-
- /* If we fail to open font, fall back to 'fixed'. If opening 'fixed' fails fall back to '-misc-*' */
- if (error != NULL) {
- ELOG("Could not open font %s (X error %d). Reverting to backup font.\n", pattern, error->error_code);
- pattern = "fixed";
- 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 if we managed to open 'fixed' */
- xcb_generic_error_t *error = xcb_request_check(conn, font_cookie);
-
- /* Fall back to '-misc-*' if opening 'fixed' fails. */
- if (error != NULL) {
- ELOG("Could not open fallback font '%s', trying with '-misc-*'\n",pattern);
- pattern = "-misc-*";
- 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 open neither requested font nor fallback (fixed or -misc-*");
- }
- }
-
- /* 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;
-}
-
-/*
- * Returns the colorpixel to use for the given hex color (think of HTML).
- *
- * The hex_color has to start with #, for example #FF00FF.
- *
- * NOTE that get_colorpixel() does _NOT_ check the given color code for validity.
- * This has to be done by the caller.
- *
- */
-uint32_t get_colorpixel(char *hex) {
- char strgroups[3][3] = {{hex[1], hex[2], '\0'},
- {hex[3], hex[4], '\0'},
- {hex[5], hex[6], '\0'}};
- uint32_t rgb16[3] = {(strtol(strgroups[0], NULL, 16)),
- (strtol(strgroups[1], NULL, 16)),
- (strtol(strgroups[2], NULL, 16))};
-
- return (rgb16[0] << 16) + (rgb16[1] << 8) + rgb16[2];
-}
-
/*
* Convenience wrapper around xcb_create_window which takes care of depth, generating an ID and checking
* for errors.
*
*/
-xcb_window_t create_window(xcb_connection_t *conn, Rect dims, uint16_t window_class,
+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);
- xcb_cursor_t cursor_id = xcb_generate_id(conn);
- /* 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);
+ /* 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,
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 */
+ visual,
mask,
values);
values[0] = xcursor_get_cursor(cursor);
xcb_change_window_attributes(conn, result, mask, values);
} else {
- i3Font *cursor_font = load_font(conn, "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->id, cursor_font->id,
- xcb_cursor, xcb_cursor + 1, 0, 0, 0, 65535, 65535, 65535);
+ 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);
}
return result;
}
-/*
- * Changes a single value in the graphic context (so one doesn’t have to define an array of values)
- *
- */
-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);
-}
-
/*
* Draws a line from x,y to to_x,to_y using the given color
*
*/
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);
+ 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} });
}
/*
*/
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_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 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.
- *
- */
-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;
-
- generated_event.border_width = 0;
- generated_event.above_sibling = XCB_NONE;
- generated_event.override_redirect = false;
-
- xcb_send_event(conn, false, window, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char*)&generated_event);
- xcb_flush(conn);
-}
-
/*
* Generates a configure_notify_event with absolute coordinates (relative to the X root
* window, not to the client’s frame) for the given client.
*
*/
void fake_absolute_configure_notify(Con *con) {
- Rect absolute;
+ xcb_rectangle_t absolute;
if (con->window == NULL)
return;
DLOG("fake rect = (%d, %d, %d, %d)\n", absolute.x, absolute.y, absolute.width, absolute.height);
- fake_configure_notify(conn, absolute, con->window->id);
+ fake_configure_notify(conn, absolute, con->window->id, con->border_width);
}
/*
- * Finds out which modifier mask is the one for numlock, as the user may change this.
+ * Sends the WM_TAKE_FOCUS ClientMessage to the given window
*
*/
-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;
- 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;
- }
-
- modmap = xcb_get_modifier_mapping_keycodes(reply);
-
- /* Get the keycode for numlock */
-#ifdef OLD_XCB_KEYSYMS_API
- xcb_keycode_t numlock = xcb_key_symbols_get_keycode(keysyms, XCB_NUM_LOCK);
-#else
- /* For now, we only use the first keysymbol. */
- xcb_keycode_t *numlock_syms = xcb_key_symbols_get_keycode(keysyms, XCB_NUM_LOCK);
- if (numlock_syms == NULL)
- return;
- xcb_keycode_t numlock = *numlock_syms;
- free(numlock_syms);
-#endif
-
- /* Check all modifiers (Mod1-Mod5, Shift, Control, Lock) */
- for (mask = 0; mask < 8; mask++)
- for (i = 0; i < reply->keycodes_per_modifier; i++)
- if (modmap[(mask * reply->keycodes_per_modifier) + i] == numlock)
- xcb_numlock_mask = masks[mask];
-
- xcb_key_symbols_free(keysyms);
- free(reply);
+void send_take_focus(xcb_window_t window) {
+ /* 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);
+ 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] = XCB_CURRENT_TIME;
+
+ DLOG("Sending WM_TAKE_FOCUS to the client\n");
+ xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
+ free(event);
}
/*
xcb_configure_window(conn, window, XCB_CONFIG_WINDOW_STACK_MODE, values);
}
-/*
- *
- * Prepares the given Cached_Pixmap for usage (checks whether the size of the
- * object this pixmap is related to (e.g. a window) has changed and re-creates
- * the pixmap if so).
- *
- */
-void cached_pixmap_prepare(xcb_connection_t *conn, struct Cached_Pixmap *pixmap) {
- DLOG("preparing pixmap\n");
-
- /* If the Rect did not change, the pixmap does not need to be recreated */
- if (memcmp(&(pixmap->rect), pixmap->referred_rect, sizeof(Rect)) == 0)
- return;
-
- memcpy(&(pixmap->rect), pixmap->referred_rect, sizeof(Rect));
-
- if (pixmap->id == 0 || pixmap->gc == 0) {
- DLOG("Creating new pixmap...\n");
- pixmap->id = xcb_generate_id(conn);
- pixmap->gc = xcb_generate_id(conn);
- } else {
- DLOG("Re-creating this pixmap...\n");
- xcb_free_gc(conn, pixmap->gc);
- xcb_free_pixmap(conn, pixmap->id);
- }
-
- xcb_create_pixmap(conn, root_depth, pixmap->id,
- pixmap->referred_drawable, pixmap->rect.width, pixmap->rect.height);
-
- xcb_create_gc(conn, pixmap->gc, pixmap->id, 0, 0);
-}
-
-/*
- * Query the width of the given text (16-bit characters, UCS) with given real
- * length (amount of glyphs) using the given font.
- *
- */
-int predict_text_width(xcb_connection_t *conn, const char *font_pattern, char *text, int length) {
- i3Font *font = load_font(conn, font_pattern);
-
- xcb_query_text_extents_cookie_t cookie;
- xcb_query_text_extents_reply_t *reply;
- xcb_generic_error_t *error;
- int width;
-
- cookie = xcb_query_text_extents(conn, font->id, length, (xcb_char2b_t*)text);
- if ((reply = xcb_query_text_extents_reply(conn, cookie, &error)) == NULL) {
- ELOG("Could not get text extents (X error code %d)\n",
- error->error_code);
- /* We return the rather safe guess of 7 pixels, because a
- * rendering error is better than a crash. Plus, the user will
- * see the error in his log. */
- return 7;
- }
-
- width = reply->overall_width;
- free(reply);
- return width;
-}
-
/*
* Configures the given window to have the size/position specified by given rect
*
XCB_CONFIG_WINDOW_HEIGHT,
&(r.x));
/* ignore events which are generated because we configured a window */
- add_ignore_event(cookie.sequence);
+ add_ignore_event(cookie.sequence, -1);
}
/*
return false;
}
+
+/**
+ * Moves the mouse pointer into the middle of rect.
+ *
+ */
+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);
+}
+
+/*
+ * 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_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);
+}
+
+/*
+ * Get depth of visual specified by visualid
+ *
+ */
+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;
+}
+
+/*
+ * 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;
+}
projects / i3 / i3 / blobdiff