X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fxcb.c;h=a2f813b06898ff2932d93baf7a04c6257273988f;hb=e893902585aa813746eb939649d8d28cf89abbf4;hp=bcef608617dd4afc36ad9feb52e7c44131f5c655;hpb=f45e706c48c8dd3c629841cf195605d219451b3f;p=i3%2Fi3 diff --git a/src/xcb.c b/src/xcb.c index bcef6086..a2f813b0 100644 --- a/src/xcb.c +++ b/src/xcb.c @@ -16,17 +16,21 @@ #include #include +#include +#include "i3.h" #include "util.h" +#include "xcb.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) @@ -38,14 +42,14 @@ i3Font *load_font(xcb_connection_t *connection, const char *pattern) { 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), @@ -65,56 +69,19 @@ i3Font *load_font(xcb_connection_t *connection, const char *pattern) { * * 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(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 pixel = reply->pixel; - free(reply); - xcb_free_colormap(conn, colormap_id); + uint32_t rgb16[3] = {(strtol(strgroups[0], NULL, 16)), + (strtol(strgroups[1], NULL, 16)), + (strtol(strgroups[2], NULL, 16))}; - /* 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; - - SLIST_INSERT_HEAD(&(client->colorpixels), cache_pixel, colorpixels); - } - - return pixel; + return (rgb16[0] << 16) + (rgb16[1] << 8) + rgb16[2]; } /* @@ -122,28 +89,40 @@ uint32_t get_colorpixel(xcb_connection_t *conn, Client *client, xcb_window_t win * for errors. * */ -xcb_window_t create_window(xcb_connection_t *conn, Rect dims, uint16_t window_class, 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_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"); + /* 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_map_window(conn, result); + if (map) + xcb_map_window(conn, result); return result; } @@ -171,9 +150,214 @@ void xcb_draw_line(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext * 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); +} + +/* + * 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) { + LOG("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) { + LOG("Creating new pixmap...\n"); + pixmap->id = xcb_generate_id(conn); + pixmap->gc = xcb_generate_id(conn); + } else { + LOG("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); +} + +/* + * Returns the xcb_charinfo_t for the given character (specified by row and + * column in the lookup table) if existing, otherwise the minimum bounds. + * + */ +static xcb_charinfo_t *get_charinfo(int col, int row, xcb_query_font_reply_t *font_info, + xcb_charinfo_t *table, bool dont_fallback) { + xcb_charinfo_t *result; + + /* Bounds checking */ + if (row < font_info->min_byte1 || row > font_info->max_byte1 || + col < font_info->min_char_or_byte2 || col > font_info->max_char_or_byte2) + return NULL; + + /* If we don’t have a table to lookup the infos per character, return the + * minimum bounds */ + if (table == NULL) + return &font_info->min_bounds; + + result = &table[((row - font_info->min_byte1) * + (font_info->max_char_or_byte2 - font_info->min_char_or_byte2 + 1)) + + (col - font_info->min_char_or_byte2)]; + + /* If the character has an entry in the table, return it */ + if (result->character_width != 0 || + (result->right_side_bearing | + result->left_side_bearing | + result->ascent | + result->descent) != 0) + return result; + + /* Otherwise, get the default character and return its charinfo */ + if (dont_fallback) + return NULL; + + return get_charinfo((font_info->default_char >> 8), + (font_info->default_char & 0xFF), + font_info, + table, + true); +} + +/* + * Calculate 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) { + xcb_query_font_reply_t *font_info; + xcb_charinfo_t *table; + int i, width = 0; + i3Font *font = load_font(conn, font_pattern); + + font_info = xcb_query_font_reply(conn, xcb_query_font_unchecked(conn, font->id), NULL); + table = xcb_query_font_char_infos(font_info); + + for (i = 0; i < 2 * length; i += 2) { + xcb_charinfo_t *info = get_charinfo(text[i+1], text[i], font_info, table, false); + if (info == NULL) + continue; + width += info->character_width; + } + + free(font_info); + + return width; }