*
* i3 - an improved dynamic tiling window manager
*
- * © 2009 Michael Stapelberg and contributors
+ * © 2009-2010 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
* 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 "util.h"
-#include "xcb.h"
+#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 *connection, const char *pattern) {
+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)
xcb_list_fonts_with_info_cookie_t info_cookie;
/* Send all our requests first */
- new->id = xcb_generate_id(connection);
- font_cookie = xcb_open_font_checked(connection, new->id, strlen(pattern), pattern);
- info_cookie = xcb_list_fonts_with_info(connection, 1, strlen(pattern), pattern);
+ 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(connection, font_cookie, "Could not open font");
+ 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(connection, info_cookie, NULL);
+ 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),
*
* The hex_color has to start with #, for example #FF00FF.
*
- * The client argument is optional. If it is given, the colorpixel will be cached.
- *
* 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(xcb_connection_t *conn, Client *client, xcb_window_t window, char *hex) {
- /* Lookup this colorpixel in the cache if a client was specified */
- if (client != NULL) {
- struct Colorpixel *pixel;
- SLIST_FOREACH(pixel, &(client->colorpixels), colorpixels)
- if (strcmp(pixel->hex, hex) == 0)
- return pixel->pixel;
- }
- #define RGB_8_TO_16(i) (65535 * ((i) & 0xFF) / 255)
+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'}};
- 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_colormap_t colormap_id = xcb_generate_id(conn);
- xcb_void_cookie_t cookie = xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE,
- colormap_id, window, root_screen->root_visual);
- check_error(conn, cookie, "Could not create colormap");
- xcb_alloc_color_reply_t *reply = xcb_alloc_color_reply(conn,
- xcb_alloc_color(conn, colormap_id, rgb16[0], rgb16[1], rgb16[2]), NULL);
-
- if (!reply) {
- printf("Could not allocate color\n");
- exit(1);
- }
-
- uint32_t pixel = reply->pixel;
- free(reply);
- xcb_free_colormap(conn, colormap_id);
-
- /* Store the result in the cache if a client was specified */
- if (client != NULL) {
- struct Colorpixel *cache_pixel = scalloc(sizeof(struct Colorpixel));
- cache_pixel->hex = sstrdup(hex);
- cache_pixel->pixel = pixel;
+ uint32_t rgb16[3] = {(strtol(strgroups[0], NULL, 16)),
+ (strtol(strgroups[1], NULL, 16)),
+ (strtol(strgroups[2], NULL, 16))};
- SLIST_INSERT_HEAD(&(client->colorpixels), cache_pixel, colorpixels);
- }
-
- return pixel;
+ return (rgb16[0] << 16) + (rgb16[1] << 8) + rgb16[2];
}
/*
* for errors.
*
*/
-xcb_window_t create_window(xcb_connection_t *conn, Rect dims, uint16_t window_class, uint16_t cursor,
- uint32_t mask, uint32_t *values) {
+xcb_window_t create_window(xcb_connection_t *conn, Rect dims, uint16_t window_class, int cursor,
+ bool map, 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);
- xcb_void_cookie_t cookie;
/* 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);
- /* 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);
- }
+ 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);
- cookie = xcb_create_window_checked(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);
- check_error(conn, cookie, "Could not create window");
-
- if (cursor > -1) {
- cookie = xcb_change_window_attributes_checked(conn, result, XCB_CW_CURSOR, &cursor_id);
- check_error(conn, cookie, "Could not change window attributes");
- }
+ /* Set the cursor */
+ i3Font *cursor_font = load_font(conn, "cursor");
+ xcb_create_glyph_cursor(conn, cursor_id, cursor_font->id, cursor_font->id,
+ (cursor == -1 ? XCB_CURSOR_LEFT_PTR : cursor),
+ (cursor == -1 ? XCB_CURSOR_LEFT_PTR : 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) */
- xcb_map_window(conn, result);
+ if (map)
+ xcb_map_window(conn, result);
return result;
}
* Draws a rectangle from x,y with width,height using the given color
*
*/
-void xcb_draw_rect(xcb_connection_t *connection, xcb_drawable_t drawable, xcb_gcontext_t gc,
+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(connection, gc, XCB_GC_FOREGROUND, colorpixel);
+ xcb_change_gc_single(conn, gc, XCB_GC_FOREGROUND, colorpixel);
xcb_rectangle_t rect = {x, y, width, height};
- xcb_poly_fill_rectangle(connection, drawable, gc, 1, &rect);
+ 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);
+}
+
+#if 0
+/*
+ * 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(xcb_connection_t *conn, Client *client) {
+ Rect absolute;
+
+ absolute.x = client->rect.x + client->child_rect.x;
+ absolute.y = client->rect.y + client->child_rect.y;
+ absolute.width = client->child_rect.width;
+ absolute.height = client->child_rect.height;
+
+ fake_configure_notify(conn, absolute, client->child);
+}
+#endif
+
+/*
+ * Finds out which modifier mask is the one for numlock, as the user may change this.
+ *
+ */
+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);
+}
+
+/*
+ * Raises the given window (typically client->frame) above all other windows
+ *
+ */
+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);
+}
+
+/*
+ *
+ * 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
+ *
+ */
+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);
}
projects / i3 / i3 / blobdiff