X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Fxcb.c;h=ee3148ed3b90437fa70a40254b05212f077ec0cd;hb=6e5e2fe5ee7ea92c93207b8f5ff5f8b674d7a72e;hp=00f59fa119893849577e84e3abd5c051b56bbb38;hpb=0e3a378c39570c27cabef8b95390c5c701fb4631;p=i3%2Fi3 diff --git a/src/xcb.c b/src/xcb.c index 00f59fa1..ee3148ed 100644 --- a/src/xcb.c +++ b/src/xcb.c @@ -3,7 +3,7 @@ * * i3 - an improved dynamic tiling window manager * - * © 2009 Michael Stapelberg and contributors + * © 2009-2010 Michael Stapelberg and contributors * * See file LICENSE for license information. * @@ -13,10 +13,57 @@ #include #include #include +#include #include +#include +#include "i3.h" #include "util.h" +#include "xcb.h" +#include "log.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_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; +} /* * Returns the colorpixel to use for the given hex color (think of HTML). @@ -27,58 +74,54 @@ * This has to be done by the caller. * */ -uint32_t get_colorpixel(xcb_connection_t *conn, xcb_window_t window, char *hex) { - /* TODO: We need to store the colorpixels per child to remove these unnecessary requests every time */ - #define RGB_8_TO_16(i) (65535 * ((i) & 0xFF) / 255) +uint32_t get_colorpixel(xcb_connection_t *conn, 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 rgb16[3] = {(strtol(strgroups[0], NULL, 16)), + (strtol(strgroups[1], NULL, 16)), + (strtol(strgroups[2], NULL, 16))}; - uint32_t pixel = reply->pixel; - free(reply); - xcb_free_colormap(conn, colormap_id); - return pixel; + return (rgb16[0] << 16) + (rgb16[1] << 8) + rgb16[2]; } -xcb_window_t create_window(xcb_connection_t *conn, Rect dims, uint16_t window_class, uint32_t mask, uint32_t *values) { +/* + * 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, 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_void_cookie_t cookie; + 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); - 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"); + 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 */ + 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; } @@ -101,3 +144,192 @@ void xcb_draw_line(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext xcb_point_t points[] = {{x, y}, {to_x, to_y}}; xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, drawable, gc, 2, points); } + +/* + * Draws a rectangle from x,y with width,height using the given color + * + */ +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); +} + +/* + * 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(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); +} + +/* + * 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_configure_window(conn, window, + XCB_CONFIG_WINDOW_X | + XCB_CONFIG_WINDOW_Y | + XCB_CONFIG_WINDOW_WIDTH | + XCB_CONFIG_WINDOW_HEIGHT, + &(r.x)); +}