X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Fxcb.c;h=3fd0bfcde2f5d87cf62f421f56f0dfe5d2ac932a;hb=3f45d3c44785c552b28f079df1888de52cd34a19;hp=708e1eadadaf4a7e549437af4fa705e62acdc68a;hpb=aefae99a117097a6953fdfd5492529f7a53b781b;p=i3%2Fi3 diff --git a/src/xcb.c b/src/xcb.c index 708e1ead..3fd0bfcd 100644 --- a/src/xcb.c +++ b/src/xcb.c @@ -1,67 +1,68 @@ /* - * vim:ts=8:expandtab + * vim:ts=4:sw=4:expandtab * * 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 -#include -#include -#include -#include -#include - -#include "util.h" -#include "xcb.h" +#include "all.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. + * Loads a font for usage, also getting its height. If fallback is true, + * i3 loads 'fixed' or '-misc-*' if the font cannot be found instead of + * exiting. * */ -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); +i3Font load_font(const char *pattern, bool fallback) { + i3Font new; + 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_error(conn, font_cookie, "Could not open font"); + /* 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); - /* 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); + check_error(conn, font_cookie, "Could open neither requested font nor fallback (fixed or -misc-*"); + } + } - 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; + /* 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); - /* Insert into cache */ - TAILQ_INSERT_TAIL(&cached_fonts, new, fonts); + new.height = reply->font_ascent + reply->font_descent; - return new; + return new; } /* @@ -73,43 +74,15 @@ i3Font *load_font(xcb_connection_t *conn, const char *pattern) { * This has to be done by the caller. * */ -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); - } - - uint32_t pixel = reply->pixel; - free(reply); - - /* Store the result in the cache */ - struct Colorpixel *cache_pixel = scalloc(sizeof(struct Colorpixel)); - cache_pixel->hex = sstrdup(hex); - cache_pixel->pixel = pixel; - - SLIST_INSERT_HEAD(&(colorpixels), cache_pixel, colorpixels); - - return pixel; +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]; } /* @@ -117,41 +90,44 @@ uint32_t get_colorpixel(xcb_connection_t *conn, char *hex) { * for errors. * */ -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); - - /* 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); - - if (cursor > -1) - xcb_change_window_attributes(conn, result, XCB_CW_CURSOR, &cursor_id); - - /* Map the window (= make it visible) */ +xcb_window_t create_window(xcb_connection_t *conn, Rect dims, 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); + + 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); + + /* 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 { + 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_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; + return result; } /* @@ -159,7 +135,7 @@ xcb_window_t create_window(xcb_connection_t *conn, Rect dims, uint16_t window_cl * */ 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); + xcb_change_gc(conn, gc, mask, &value); } /* @@ -168,9 +144,9 @@ void xcb_change_gc_single(xcb_connection_t *conn, xcb_gcontext_t gc, uint32_t ma */ 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_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); } /* @@ -179,9 +155,9 @@ void xcb_draw_line(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext */ 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); + 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); } /* @@ -191,25 +167,23 @@ void xcb_draw_rect(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext * */ 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; + xcb_configure_notify_event_t generated_event; - generated_event.x = r.x; - generated_event.y = r.y; - generated_event.width = r.width; - generated_event.height = r.height; + generated_event.event = window; + generated_event.window = window; + generated_event.response_type = XCB_CONFIGURE_NOTIFY; - generated_event.border_width = 0; - generated_event.above_sibling = XCB_NONE; - generated_event.override_redirect = false; + generated_event.x = r.x; + generated_event.y = r.y; + generated_event.width = r.width; + generated_event.height = r.height; - xcb_send_event(conn, false, window, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char*)&generated_event); - xcb_flush(conn); + generated_event.border_width = 0; + generated_event.above_sibling = XCB_NONE; + generated_event.override_redirect = false; - LOG("Told the client it is at %dx%d with %dx%d\n", r.x, r.y, r.width, r.height); + xcb_send_event(conn, false, window, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char*)&generated_event); + xcb_flush(conn); } /* @@ -217,15 +191,39 @@ void fake_configure_notify(xcb_connection_t *conn, Rect r, xcb_window_t window) * window, not to the client’s frame) for the given client. * */ -void fake_absolute_configure_notify(xcb_connection_t *conn, Client *client) { - Rect absolute; +void fake_absolute_configure_notify(Con *con) { + Rect absolute; + if (con->window == NULL) + return; + + 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; + + DLOG("fake rect = (%d, %d, %d, %d)\n", absolute.x, absolute.y, absolute.width, absolute.height); + + fake_configure_notify(conn, absolute, con->window->id); +} + +/* + * Sends the WM_TAKE_FOCUS ClientMessage to the given window + * + */ +void send_take_focus(xcb_window_t window) { + xcb_client_message_event_t ev; + + memset(&ev, 0, sizeof(xcb_client_message_event_t)); - absolute.x = client->rect.x; - absolute.y = client->rect.y; - absolute.width = client->rect.width - (2 * client->child_rect.x); - absolute.height = client->rect.height - client->child_rect.y - 1; + 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; - fake_configure_notify(conn, absolute, client->child); + DLOG("Sending WM_TAKE_FOCUS to the client\n"); + xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)&ev); } /* @@ -233,48 +231,122 @@ void fake_absolute_configure_notify(xcb_connection_t *conn, Client *client) { * */ 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; - } + 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); + modmap = xcb_get_modifier_mapping_keycodes(reply); - /* Get the keycode for numlock */ + /* Get the keycode for numlock */ #ifdef OLD_XCB_KEYSYMS_API - xcb_keycode_t numlock = xcb_key_symbols_get_keycode(keysyms, XCB_NUM_LOCK); + 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); - xcb_keycode_t numlock = *numlock_syms; + /* 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 < 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]; + /* 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); +} + +/* + * 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(char *text, int length) { + 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, config.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, 0); +} + +/* + * Returns true if the given reply contains the given atom. + * + */ +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; - xcb_key_symbols_free(keysyms); - free(reply); }