From: Fernando Tarlá Cardoso Lemos Date: Sun, 13 Nov 2011 19:19:42 +0000 (-0200) Subject: Enhance libi3 and use it in i3bar. X-Git-Tag: 4.2~231^2~3 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=5c2088c87e0e30947a670094534b838dc2831c94;p=i3%2Fi3 Enhance libi3 and use it in i3bar. Abstracted draw_text and predict_text_width into libi3. Use predict_text_width from libi3 in i3 too. This required tracking xcb_connection in a xcb_connection_t *conn variable that libi3 expects to be available in i3bar. --- diff --git a/i3bar/include/xcb.h b/i3bar/include/xcb.h index 8067a193..f82c7115 100644 --- a/i3bar/include/xcb.h +++ b/i3bar/include/xcb.h @@ -103,12 +103,4 @@ void draw_bars(); */ void redraw_bars(); -/* - * Predicts the length of text based on cached data. - * The string has to be encoded in ucs2 and glyph_len has to be the length - * of the string (in glyphs). - * - */ -uint32_t predict_text_extents(xcb_char2b_t *text, uint32_t length); - #endif diff --git a/i3bar/src/workspaces.c b/i3bar/src/workspaces.c index 7cfbeffd..a6312e38 100644 --- a/i3bar/src/workspaces.c +++ b/i3bar/src/workspaces.c @@ -124,8 +124,8 @@ static int workspaces_string_cb(void *params_, const unsigned char *val, unsigne params->workspaces_walk->ucs2_name = ucs2_name; params->workspaces_walk->name_glyphs = ucs2_len; params->workspaces_walk->name_width = - predict_text_extents(params->workspaces_walk->ucs2_name, - params->workspaces_walk->name_glyphs); + predict_text_width((char *)params->workspaces_walk->ucs2_name, + params->workspaces_walk->name_glyphs, true); DLOG("Got Workspace %s, name_width: %d, glyphs: %d\n", params->workspaces_walk->name, diff --git a/i3bar/src/xcb.c b/i3bar/src/xcb.c index 29ffe1c4..df8c1199 100644 --- a/i3bar/src/xcb.c +++ b/i3bar/src/xcb.c @@ -48,12 +48,12 @@ xcb_connection_t *xcb_connection; int screen; xcb_screen_t *xcb_screen; xcb_window_t xcb_root; -xcb_font_t xcb_font; -/* We need to cache some data to speed up text-width-prediction */ -xcb_query_font_reply_t *font_info; -int font_height; -xcb_charinfo_t *font_table; +/* This is needed for integration with libi3 */ +xcb_connection_t *conn; + +/* The font we'll use */ +static i3Font font; /* These are only relevant for XKB, which we only need for grabbing modifiers */ Display *xkb_dpy; @@ -99,75 +99,6 @@ int _xcb_request_failed(xcb_void_cookie_t cookie, char *err_msg, int line) { return 0; } -/* - * Predicts the length of text based on cached data. - * The string has to be encoded in ucs2 and glyph_len has to be the length - * of the string (in glyphs). - * - */ -uint32_t predict_text_extents(xcb_char2b_t *text, uint32_t length) { - /* If we don't have per-character data, return the maximum width */ - if (font_table == NULL) { - return (font_info->max_bounds.character_width * length); - } - - uint32_t width = 0; - uint32_t i; - - for (i = 0; i < length; i++) { - xcb_charinfo_t *info; - int row = text[i].byte1; - int col = text[i].byte2; - - 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) { - continue; - } - - /* Don't you ask me, how this one works… */ - info = &font_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 (info->character_width != 0 || - (info->right_side_bearing | - info->left_side_bearing | - info->ascent | - info->descent) != 0) { - width += info->character_width; - } - } - - return width; -} - -/* - * Draws text given in UCS-2-encoding to a given drawable and position - * - */ -void draw_text(xcb_drawable_t drawable, xcb_gcontext_t ctx, int16_t x, int16_t y, - xcb_char2b_t *text, uint32_t glyph_count) { - int offset = 0; - int16_t pos_x = x; - int16_t font_ascent = font_info->font_ascent; - - while (glyph_count > 0) { - uint8_t chunk_size = MIN(255, glyph_count); - uint32_t chunk_width = predict_text_extents(text + offset, chunk_size); - - xcb_image_text_16(xcb_connection, - chunk_size, - drawable, - ctx, - pos_x, y + font_ascent, - text + offset); - - offset += chunk_size; - pos_x += chunk_width; - glyph_count -= chunk_size; - } -} - /* * Redraws the statusline to the buffer * @@ -181,16 +112,16 @@ void refresh_statusline() { xcb_char2b_t *text = (xcb_char2b_t*) convert_utf8_to_ucs2(statusline, &glyph_count); uint32_t old_statusline_width = statusline_width; - statusline_width = predict_text_extents(text, glyph_count); + statusline_width = predict_text_width((char*)text, glyph_count, true); /* If the statusline is bigger than our screen we need to make sure that * the pixmap provides enough space, so re-allocate if the width grew */ if (statusline_width > xcb_screen->width_in_pixels && statusline_width > old_statusline_width) realloc_sl_buffer(); - xcb_rectangle_t rect = { 0, 0, xcb_screen->width_in_pixels, font_height }; + xcb_rectangle_t rect = { 0, 0, xcb_screen->width_in_pixels, font.height }; xcb_poly_fill_rectangle(xcb_connection, statusline_pm, statusline_clear, 1, &rect); - draw_text(statusline_pm, statusline_ctx, 0, 0, text, glyph_count); + draw_text((char*)text, glyph_count, true, statusline_pm, statusline_ctx, 0, 0); FREE(text); } @@ -242,9 +173,9 @@ void unhide_bars() { values[0] = walk->rect.x; if (config.position == POS_TOP) values[1] = walk->rect.y; - else values[1] = walk->rect.y + walk->rect.h - font_height - 6; + else values[1] = walk->rect.y + walk->rect.h - font.height - 6; values[2] = walk->rect.w; - values[3] = font_height + 6; + values[3] = font.height + 6; values[4] = XCB_STACK_MODE_ABOVE; DLOG("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]); cookie = xcb_configure_window_checked(xcb_connection, @@ -378,8 +309,8 @@ static void configure_trayclients() { clients++; DLOG("Configuring tray window %08x to x=%d\n", - trayclient->win, output->rect.w - (clients * (font_height + 2))); - uint32_t x = output->rect.w - (clients * (font_height + 2)); + trayclient->win, output->rect.w - (clients * (font.height + 2))); + uint32_t x = output->rect.w - (clients * (font.height + 2)); xcb_configure_window(xcb_connection, trayclient->win, XCB_CONFIG_WINDOW_X, @@ -465,7 +396,7 @@ static void handle_client_message(xcb_client_message_event_t* event) { xcb_reparent_window(xcb_connection, client, output->bar, - output->rect.w - font_height - 2, + output->rect.w - font.height - 2, 2); /* We reconfigure the window to use a reasonable size. The systray * specification explicitly says: @@ -473,8 +404,8 @@ static void handle_client_message(xcb_client_message_event_t* event) { * should do their best to cope with any size effectively */ mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT; - values[0] = font_height; - values[1] = font_height; + values[0] = font.height; + values[1] = font.height; xcb_configure_window(xcb_connection, client, mask, @@ -649,10 +580,10 @@ static void handle_configure_request(xcb_configure_request_event_t *event) { continue; xcb_rectangle_t rect; - rect.x = output->rect.w - (clients * (font_height + 2)); + rect.x = output->rect.w - (clients * (font.height + 2)); rect.y = 2; - rect.width = font_height; - rect.height = font_height; + rect.width = font.height; + rect.height = font.height; DLOG("This is a tray window. x = %d\n", rect.x); fake_configure_notify(xcb_connection, rect, event->window, 0); @@ -778,6 +709,7 @@ char *init_xcb_early() { ELOG("Cannot open display\n"); exit(EXIT_FAILURE); } + conn = xcb_connection; DLOG("Connected to xcb\n"); /* We have to request the atoms we need */ @@ -869,29 +801,16 @@ char *init_xcb_early() { * */ void init_xcb_late(char *fontname) { - if (fontname == NULL) { - /* XXX: font fallback to 'misc' like i3 does it would be good. */ + if (fontname == NULL) fontname = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1"; - } - /* We load and allocate the font */ - xcb_font = xcb_generate_id(xcb_connection); - xcb_void_cookie_t open_font_cookie; - open_font_cookie = xcb_open_font_checked(xcb_connection, - xcb_font, - strlen(fontname), - fontname); - - /* We need to save info about the font, because we need the font's height and - * information about the width of characters */ - xcb_query_font_cookie_t query_font_cookie; - query_font_cookie = xcb_query_font(xcb_connection, - xcb_font); - - xcb_change_gc(xcb_connection, - statusline_ctx, - XCB_GC_FONT, - (uint32_t[]){ xcb_font }); + /* Load the font */ + font = load_font(fontname, true); + set_font(&font); + DLOG("Calculated Font-height: %d\n", font.height); + + /* Set the font in the gc */ + xcb_change_gc(xcb_connection, statusline_ctx, XCB_GC_FONT, (uint32_t[]){ font.id }); xcb_flush(xcb_connection); @@ -936,25 +855,6 @@ void init_xcb_late(char *fontname) { ev_io_start(main_loop, xkb_io); XFlush(xkb_dpy); } - - /* Now we save the font-infos */ - font_info = xcb_query_font_reply(xcb_connection, - query_font_cookie, - NULL); - - if (xcb_request_failed(open_font_cookie, "Could not open font")) { - exit(EXIT_FAILURE); - } - - font_height = font_info->font_ascent + font_info->font_descent; - - if (xcb_query_font_char_infos_length(font_info) == 0) { - font_table = NULL; - } else { - font_table = xcb_query_font_char_infos(font_info); - } - - DLOG("Calculated Font-height: %d\n", font_height); } /* @@ -1084,7 +984,6 @@ void clean_xcb() { FREE(xcb_chk); FREE(xcb_prep); FREE(xcb_io); - FREE(font_info); } /* @@ -1137,7 +1036,7 @@ void realloc_sl_buffer() { xcb_screen->height_in_pixels); uint32_t mask = XCB_GC_FOREGROUND; - uint32_t vals[3] = { colors.bar_bg, colors.bar_bg, xcb_font }; + uint32_t vals[3] = { colors.bar_bg, colors.bar_bg, font.id }; xcb_free_gc(xcb_connection, statusline_clear); statusline_clear = xcb_generate_id(xcb_connection); xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection, @@ -1207,8 +1106,8 @@ void reconfig_windows() { xcb_screen->root_depth, walk->bar, xcb_root, - walk->rect.x, walk->rect.y + walk->rect.h - font_height - 6, - walk->rect.w, font_height + 6, + walk->rect.x, walk->rect.y + walk->rect.h - font.height - 6, + walk->rect.w, font.height + 6, 1, XCB_WINDOW_CLASS_INPUT_OUTPUT, xcb_screen->root_visual, @@ -1282,12 +1181,12 @@ void reconfig_windows() { case POS_NONE: break; case POS_TOP: - strut_partial.top = font_height + 6; + strut_partial.top = font.height + 6; strut_partial.top_start_x = walk->rect.x; strut_partial.top_end_x = walk->rect.x + walk->rect.w; break; case POS_BOT: - strut_partial.bottom = font_height + 6; + strut_partial.bottom = font.height + 6; strut_partial.bottom_start_x = walk->rect.x; strut_partial.bottom_end_x = walk->rect.x + walk->rect.w; break; @@ -1305,7 +1204,7 @@ void reconfig_windows() { * with which we draw to them) */ walk->bargc = xcb_generate_id(xcb_connection); mask = XCB_GC_FONT; - values[0] = xcb_font; + values[0] = font.id; xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(xcb_connection, walk->bargc, walk->bar, @@ -1343,9 +1242,9 @@ void reconfig_windows() { XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_STACK_MODE; values[0] = walk->rect.x; - values[1] = walk->rect.y + walk->rect.h - font_height - 6; + values[1] = walk->rect.y + walk->rect.h - font.height - 6; values[2] = walk->rect.w; - values[3] = font_height + 6; + values[3] = font.height + 6; values[4] = XCB_STACK_MODE_ABOVE; DLOG("Destroying buffer for output %s", walk->name); @@ -1401,7 +1300,7 @@ void draw_bars() { outputs_walk->bargc, XCB_GC_FOREGROUND, &color); - xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font_height + 6 }; + xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font.height + 6 }; xcb_poly_fill_rectangle(xcb_connection, outputs_walk->buffer, outputs_walk->bargc, @@ -1422,7 +1321,7 @@ void draw_bars() { /* We assume the tray icons are quadratic (we use the font * *height* as *width* of the icons) because we configured them * like this. */ - traypx += font_height + 2; + traypx += font.height + 2; } /* Add 2px of padding if there are any tray icons */ if (traypx > 0) @@ -1433,7 +1332,7 @@ void draw_bars() { outputs_walk->bargc, MAX(0, (int16_t)(statusline_width - outputs_walk->rect.w + 4)), 0, MAX(0, (int16_t)(outputs_walk->rect.w - statusline_width - traypx - 4)), 3, - MIN(outputs_walk->rect.w - traypx - 4, statusline_width), font_height); + MIN(outputs_walk->rect.w - traypx - 4, statusline_width), font.height); } if (config.disable_ws) { @@ -1467,7 +1366,7 @@ void draw_bars() { outputs_walk->bargc, mask, vals); - xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font_height + 4 }; + xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font.height + 4 }; xcb_poly_fill_rectangle(xcb_connection, outputs_walk->buffer, outputs_walk->bargc, @@ -1477,12 +1376,8 @@ void draw_bars() { outputs_walk->bargc, XCB_GC_FOREGROUND, &fg_color); - xcb_image_text_16(xcb_connection, - ws_walk->name_glyphs, - outputs_walk->buffer, - outputs_walk->bargc, - i + 5, font_info->font_ascent + 2, - ws_walk->ucs2_name); + draw_text((char*)ws_walk->ucs2_name, ws_walk->name_glyphs, true, + outputs_walk->buffer, outputs_walk->bargc, i + 5, 2); i += 10 + ws_walk->name_width; } diff --git a/include/libi3.h b/include/libi3.h index c87ec3e3..c08bbd81 100644 --- a/include/libi3.h +++ b/include/libi3.h @@ -27,10 +27,17 @@ typedef struct Font i3Font; * */ struct Font { - /** The height of the font, built from font_ascent + font_descent */ - int height; /** The xcb-id for the font */ xcb_font_t id; + + /** Font information gathered from the server */ + xcb_query_font_reply_t *info; + + /** Font table for this font (may be NULL) */ + xcb_charinfo_t *table; + + /** The height of the font, built from font_ascent + font_descent */ + int height; }; /* Since this file also gets included by utilities which don’t use the i3 log @@ -195,4 +202,27 @@ char *convert_ucs2_to_utf8(xcb_char2b_t *text, size_t num_glyphs); */ xcb_char2b_t *convert_utf8_to_ucs2(char *input, int *real_strlen); +/** + * Defines the font to be used for the forthcoming draw_text and + * predict_text_width calls. + * + */ +void set_font(i3Font *font); + +/** + * Draws text onto the specified X drawable (normally a pixmap) at the + * specified coordinates (from the top left corner of the leftmost, uppermost + * glyph) and using the provided gc. Text can be specified as UCS-2 or UTF-8. + * + */ +void draw_text(char *text, size_t text_len, bool is_ucs2, + xcb_drawable_t drawable, xcb_gcontext_t gc, int x, int y); + +/** + * Predict the text width in pixels for the given text. Text can be specified + * as UCS-2 or UTF-8. + * + */ +int predict_text_width(char *text, size_t text_len, bool is_ucs2); + #endif diff --git a/include/xcb.h b/include/xcb.h index a1bd22fa..8c7d5422 100644 --- a/include/xcb.h +++ b/include/xcb.h @@ -94,13 +94,6 @@ void send_take_focus(xcb_window_t window); */ void xcb_raise_window(xcb_connection_t *conn, xcb_window_t window); -/** - * 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(const xcb_char2b_t *text, int length); - /** * Configures the given window to have the size/position specified by given rect * diff --git a/libi3/font.c b/libi3/font.c new file mode 100644 index 00000000..394567ba --- /dev/null +++ b/libi3/font.c @@ -0,0 +1,230 @@ +/* + * vim:ts=4:sw=4:expandtab + * + * i3 - an improved dynamic tiling window manager + * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE) + * + */ +#include +#include +#include +#include +#include +#include + +#include "libi3.h" + +extern xcb_connection_t *conn; +static const i3Font *savedFont = NULL; + +/* + * Loads a font for usage, also getting its metrics. If fallback is true, + * the fonts 'fixed' or '-misc-*' will be loaded instead of exiting. + * + */ +i3Font load_font(const char *pattern, bool fallback) { + i3Font font; + + /* Send all our requests first */ + font.id = xcb_generate_id(conn); + xcb_void_cookie_t font_cookie = xcb_open_font_checked(conn, font.id, + strlen(pattern), pattern); + xcb_query_font_cookie_t info_cookie = xcb_query_font(conn, font.id); + + /* Check for errors. If errors, fall back to default font. */ + xcb_generic_error_t *error; + error = xcb_request_check(conn, font_cookie); + + /* If we fail to open font, fall back to 'fixed' */ + if (fallback && error != NULL) { + ELOG("Could not open font %s (X error %d). Trying fallback to 'fixed'.\n", + pattern, error->error_code); + pattern = "fixed"; + font_cookie = xcb_open_font_checked(conn, font.id, strlen(pattern), pattern); + info_cookie = xcb_query_font(conn, font.id); + + /* Check if we managed to open 'fixed' */ + error = xcb_request_check(conn, font_cookie); + + /* Fall back to '-misc-*' if opening 'fixed' fails. */ + if (error != NULL) { + ELOG("Could not open fallback font 'fixed', trying with '-misc-*'.\n"); + pattern = "-misc-*"; + font_cookie = xcb_open_font_checked(conn, font.id, strlen(pattern), pattern); + info_cookie = xcb_query_font(conn, font.id); + + if ((error = xcb_request_check(conn, font_cookie)) != NULL) + errx(EXIT_FAILURE, "Could open neither requested font nor fallbacks " + "(fixed or -misc-*): X11 error %d", error->error_code); + } + } + + /* Get information (height/name) for this font */ + if (!(font.info = xcb_query_font_reply(conn, info_cookie, NULL))) + errx(EXIT_FAILURE, "Could not load font \"%s\"", pattern); + + /* Get the font table, if possible */ + font.table = xcb_query_font_char_infos(font.info); + + /* Calculate the font height */ + font.height = font.info->font_ascent + font.info->font_descent; + + return font; +} + +/* + * Defines the font to be used for the forthcoming draw_text and + * predict_text_width calls. + * + */ +void set_font(i3Font *font) { + savedFont = font; +} + +/* + * Draws text onto the specified X drawable (normally a pixmap) at the + * specified coordinates (from the top left corner of the leftmost, uppermost + * glyph) and using the provided gc. Text can be specified as UCS-2 or UTF-8. + * + */ +void draw_text(char *text, size_t text_len, bool is_ucs2, + xcb_drawable_t drawable, xcb_gcontext_t gc, int x, int y) { + assert(savedFont != NULL); + assert(text_len != 0); + + /* X11 coordinates for fonts start at the baseline */ + int pos_y = y + savedFont->info->font_ascent; + + /* As an optimization, check if we can bypass conversion */ + if (!is_ucs2 && text_len <= 255) { + xcb_image_text_8(conn, text_len, drawable, gc, x, pos_y, text); + return; + } + + /* Convert the text into UCS-2 so we can do basic pointer math */ + char *input; + if (is_ucs2) { + input = text; + } + else { + int real_strlen; + input = (char*)convert_utf8_to_ucs2(text, &real_strlen); + text_len = real_strlen; + } + + /* The X11 protocol limits text drawing to 255 chars, so we may need + * multiple calls */ + int pos_x = x; + int offset = 0; + for (;;) { + /* Calculate the size of this chunk */ + int chunk_size = text_len > 255 ? 255 : text_len; + xcb_char2b_t *chunk = (xcb_char2b_t*)input + offset; + + /* Draw it */ + xcb_image_text_16(conn, chunk_size, drawable, gc, pos_x, pos_y, chunk); + + /* Advance the offset and length of the text to draw */ + offset += chunk_size; + text_len -= chunk_size; + + /* Check if we're done */ + if (text_len == 0) + break; + + /* Advance pos_x based on the predicted text width */ + pos_x += predict_text_width((char*)chunk, chunk_size, true); + } + + /* If we had to convert, free the converted string */ + if (!is_ucs2) + free(input); +} + +static int xcb_query_text_width(xcb_char2b_t *text, size_t text_len) { + /* Make the user know we're using the slow path */ + static bool first = true; + if (first) { + fprintf(stderr, "Using slow code path for text extents\n"); + first = false; + } + + /* Query the text width */ + xcb_generic_error_t *error; + xcb_query_text_extents_cookie_t cookie = xcb_query_text_extents(conn, + savedFont->id, text_len, (xcb_char2b_t*)text); + xcb_query_text_extents_reply_t *reply = xcb_query_text_extents_reply(conn, + cookie, &error); + if (reply == NULL) { + /* We return a safe estimate because a rendering error is better than + * a crash. Plus, the user will see the error in his log. */ + fprintf(stderr, "Could not get text extents (X error code %d)\n", + error->error_code); + return savedFont->info->max_bounds.character_width * text_len; + } + + int width = reply->overall_width; + free(reply); + return width; +} + +/* + * Predict the text width in pixels for the given text. Text can be specified + * as UCS-2 or UTF-8. + * + */ +int predict_text_width(char *text, size_t text_len, bool is_ucs2) { + /* Convert the text into UTF-16 so we can do basic pointer math */ + xcb_char2b_t *input; + if (is_ucs2) { + input = (xcb_char2b_t *)text; + } + else { + int real_strlen; + input = convert_utf8_to_ucs2(text, &real_strlen); + text_len = real_strlen; + } + + int width; + if (savedFont->table == NULL) { + /* If we don't have a font table, fall back to querying the server */ + width = xcb_query_text_width(input, text_len); + } + else { + /* Save some pointers for convenience */ + xcb_query_font_reply_t *font_info = savedFont->info; + xcb_charinfo_t *font_table = savedFont->table; + + /* Calculate the width using the font table */ + width = 0; + for (size_t i = 0; i < text_len; i++) { + xcb_charinfo_t *info; + int row = input[i].byte1; + int col = input[i].byte2; + + 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) { + continue; + } + + /* Don't you ask me, how this one works… (Merovius) */ + info = &font_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 (info->character_width != 0 || + (info->right_side_bearing | + info->left_side_bearing | + info->ascent | + info->descent) != 0) { + width += info->character_width; + } + } + } + + /* If we had to convert, free the converted string */ + if (!is_ucs2) + free(input); + + return width; +} diff --git a/libi3/load_font.c b/libi3/load_font.c deleted file mode 100644 index acb52c00..00000000 --- a/libi3/load_font.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - * vim:ts=4:sw=4:expandtab - * - * i3 - an improved dynamic tiling window manager - * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE) - * - */ -#include -#include -#include -#include -#include - -#include "libi3.h" - -extern xcb_connection_t *conn; - -/* - * Loads a font for usage, also getting its height. If fallback is true, - * the fonts 'fixed' or '-misc-*' will be loaded instead of exiting. - * - */ -i3Font load_font(const char *pattern, bool fallback) { - i3Font font; - xcb_void_cookie_t font_cookie; - xcb_list_fonts_with_info_cookie_t info_cookie; - xcb_list_fonts_with_info_reply_t *info_reply; - xcb_generic_error_t *error; - - /* Send all our requests first */ - font.id = xcb_generate_id(conn); - font_cookie = xcb_open_font_checked(conn, font.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. */ - error = xcb_request_check(conn, font_cookie); - - /* If we fail to open font, fall back to 'fixed' */ - if (fallback && error != NULL) { - ELOG("Could not open font %s (X error %d). Trying fallback to 'fixed'.\n", - pattern, error->error_code); - pattern = "fixed"; - font_cookie = xcb_open_font_checked(conn, font.id, strlen(pattern), pattern); - info_cookie = xcb_list_fonts_with_info(conn, 1, strlen(pattern), pattern); - - /* Check if we managed to open 'fixed' */ - error = xcb_request_check(conn, font_cookie); - - /* Fall back to '-misc-*' if opening 'fixed' fails. */ - if (error != NULL) { - ELOG("Could not open fallback font 'fixed', trying with '-misc-*'.\n"); - pattern = "-misc-*"; - font_cookie = xcb_open_font_checked(conn, font.id, strlen(pattern), pattern); - info_cookie = xcb_list_fonts_with_info(conn, 1, strlen(pattern), pattern); - - if ((error = xcb_request_check(conn, font_cookie)) != NULL) - errx(EXIT_FAILURE, "Could open neither requested font nor fallbacks " - "(fixed or -misc-*): X11 error %d", error->error_code); - } - } - - /* Get information (height/name) for this font */ - if (!(info_reply = xcb_list_fonts_with_info_reply(conn, info_cookie, NULL))) - errx(EXIT_FAILURE, "Could not load font \"%s\"", pattern); - - font.height = info_reply->font_ascent + info_reply->font_descent; - - free(info_reply); - - return font; -} diff --git a/src/cfgparse.y b/src/cfgparse.y index 79da317d..0d2c6977 100644 --- a/src/cfgparse.y +++ b/src/cfgparse.y @@ -1546,6 +1546,7 @@ font: TOKFONT STR { config.font = load_font($2, true); + set_font(&config.font); printf("font %s\n", $2); FREE(font_pattern); font_pattern = $2; diff --git a/src/config.c b/src/config.c index 8efb491e..2d7fb3bf 100644 --- a/src/config.c +++ b/src/config.c @@ -371,6 +371,7 @@ void load_configuration(xcb_connection_t *conn, const char *override_configpath, if (config.font.id == 0) { ELOG("You did not specify required configuration option \"font\"\n"); config.font = load_font("fixed", true); + set_font(&config.font); } #if 0 diff --git a/src/sighandler.c b/src/sighandler.c index ef8a514b..c7c9ce7f 100644 --- a/src/sighandler.c +++ b/src/sighandler.c @@ -152,7 +152,7 @@ void handle_signal(int sig, siginfo_t *info, void *data) { /* calculate width for longest text */ int text_len = strlen(crash_text[crash_text_longest]); xcb_char2b_t *longest_text = convert_utf8_to_ucs2(crash_text[crash_text_longest], &text_len); - int font_width = predict_text_width(longest_text, text_len); + int font_width = predict_text_width((char *)longest_text, text_len, true); int width = font_width + 20; /* Open a popup window on each virtual screen */ diff --git a/src/xcb.c b/src/xcb.c index 739bf9e7..48906a26 100644 --- a/src/xcb.c +++ b/src/xcb.c @@ -130,32 +130,6 @@ void xcb_raise_window(xcb_connection_t *conn, xcb_window_t window) { 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(const xcb_char2b_t *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, 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 *