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.
This commit is contained in:
parent
70151ea238
commit
5c2088c87e
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@ -103,12 +103,4 @@ void draw_bars();
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*/
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void redraw_bars();
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/*
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* Predicts the length of text based on cached data.
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* The string has to be encoded in ucs2 and glyph_len has to be the length
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* of the string (in glyphs).
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*
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*/
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uint32_t predict_text_extents(xcb_char2b_t *text, uint32_t length);
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#endif
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@ -124,8 +124,8 @@ static int workspaces_string_cb(void *params_, const unsigned char *val, unsigne
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params->workspaces_walk->ucs2_name = ucs2_name;
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params->workspaces_walk->name_glyphs = ucs2_len;
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params->workspaces_walk->name_width =
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predict_text_extents(params->workspaces_walk->ucs2_name,
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params->workspaces_walk->name_glyphs);
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predict_text_width((char *)params->workspaces_walk->ucs2_name,
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params->workspaces_walk->name_glyphs, true);
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DLOG("Got Workspace %s, name_width: %d, glyphs: %d\n",
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params->workspaces_walk->name,
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185
i3bar/src/xcb.c
185
i3bar/src/xcb.c
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@ -48,12 +48,12 @@ xcb_connection_t *xcb_connection;
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int screen;
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xcb_screen_t *xcb_screen;
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xcb_window_t xcb_root;
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xcb_font_t xcb_font;
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/* We need to cache some data to speed up text-width-prediction */
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xcb_query_font_reply_t *font_info;
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int font_height;
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xcb_charinfo_t *font_table;
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/* This is needed for integration with libi3 */
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xcb_connection_t *conn;
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/* The font we'll use */
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static i3Font font;
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/* These are only relevant for XKB, which we only need for grabbing modifiers */
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Display *xkb_dpy;
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@ -99,75 +99,6 @@ int _xcb_request_failed(xcb_void_cookie_t cookie, char *err_msg, int line) {
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return 0;
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}
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/*
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* Predicts the length of text based on cached data.
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* The string has to be encoded in ucs2 and glyph_len has to be the length
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* of the string (in glyphs).
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*
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*/
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uint32_t predict_text_extents(xcb_char2b_t *text, uint32_t length) {
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/* If we don't have per-character data, return the maximum width */
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if (font_table == NULL) {
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return (font_info->max_bounds.character_width * length);
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}
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uint32_t width = 0;
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uint32_t i;
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for (i = 0; i < length; i++) {
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xcb_charinfo_t *info;
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int row = text[i].byte1;
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int col = text[i].byte2;
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if (row < font_info->min_byte1 || row > font_info->max_byte1 ||
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col < font_info->min_char_or_byte2 || col > font_info->max_char_or_byte2) {
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continue;
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}
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/* Don't you ask me, how this one works… */
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info = &font_table[((row - font_info->min_byte1) *
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(font_info->max_char_or_byte2 - font_info->min_char_or_byte2 + 1)) +
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(col - font_info->min_char_or_byte2)];
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if (info->character_width != 0 ||
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(info->right_side_bearing |
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info->left_side_bearing |
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info->ascent |
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info->descent) != 0) {
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width += info->character_width;
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}
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}
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return width;
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}
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/*
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* Draws text given in UCS-2-encoding to a given drawable and position
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*
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*/
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void draw_text(xcb_drawable_t drawable, xcb_gcontext_t ctx, int16_t x, int16_t y,
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xcb_char2b_t *text, uint32_t glyph_count) {
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int offset = 0;
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int16_t pos_x = x;
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int16_t font_ascent = font_info->font_ascent;
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while (glyph_count > 0) {
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uint8_t chunk_size = MIN(255, glyph_count);
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uint32_t chunk_width = predict_text_extents(text + offset, chunk_size);
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xcb_image_text_16(xcb_connection,
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chunk_size,
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drawable,
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ctx,
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pos_x, y + font_ascent,
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text + offset);
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offset += chunk_size;
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pos_x += chunk_width;
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glyph_count -= chunk_size;
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}
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}
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/*
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* Redraws the statusline to the buffer
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*
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@ -181,16 +112,16 @@ void refresh_statusline() {
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xcb_char2b_t *text = (xcb_char2b_t*) convert_utf8_to_ucs2(statusline, &glyph_count);
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uint32_t old_statusline_width = statusline_width;
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statusline_width = predict_text_extents(text, glyph_count);
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statusline_width = predict_text_width((char*)text, glyph_count, true);
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/* If the statusline is bigger than our screen we need to make sure that
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* the pixmap provides enough space, so re-allocate if the width grew */
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if (statusline_width > xcb_screen->width_in_pixels &&
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statusline_width > old_statusline_width)
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realloc_sl_buffer();
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xcb_rectangle_t rect = { 0, 0, xcb_screen->width_in_pixels, font_height };
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xcb_rectangle_t rect = { 0, 0, xcb_screen->width_in_pixels, font.height };
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xcb_poly_fill_rectangle(xcb_connection, statusline_pm, statusline_clear, 1, &rect);
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draw_text(statusline_pm, statusline_ctx, 0, 0, text, glyph_count);
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draw_text((char*)text, glyph_count, true, statusline_pm, statusline_ctx, 0, 0);
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FREE(text);
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}
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@ -242,9 +173,9 @@ void unhide_bars() {
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values[0] = walk->rect.x;
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if (config.position == POS_TOP)
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values[1] = walk->rect.y;
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else values[1] = walk->rect.y + walk->rect.h - font_height - 6;
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else values[1] = walk->rect.y + walk->rect.h - font.height - 6;
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values[2] = walk->rect.w;
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values[3] = font_height + 6;
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values[3] = font.height + 6;
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values[4] = XCB_STACK_MODE_ABOVE;
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DLOG("Reconfiguring Window for output %s to %d,%d\n", walk->name, values[0], values[1]);
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cookie = xcb_configure_window_checked(xcb_connection,
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@ -378,8 +309,8 @@ static void configure_trayclients() {
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clients++;
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DLOG("Configuring tray window %08x to x=%d\n",
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trayclient->win, output->rect.w - (clients * (font_height + 2)));
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uint32_t x = output->rect.w - (clients * (font_height + 2));
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trayclient->win, output->rect.w - (clients * (font.height + 2)));
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uint32_t x = output->rect.w - (clients * (font.height + 2));
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xcb_configure_window(xcb_connection,
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trayclient->win,
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XCB_CONFIG_WINDOW_X,
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@ -465,7 +396,7 @@ static void handle_client_message(xcb_client_message_event_t* event) {
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xcb_reparent_window(xcb_connection,
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client,
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output->bar,
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output->rect.w - font_height - 2,
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output->rect.w - font.height - 2,
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2);
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/* We reconfigure the window to use a reasonable size. The systray
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* specification explicitly says:
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@ -473,8 +404,8 @@ static void handle_client_message(xcb_client_message_event_t* event) {
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* should do their best to cope with any size effectively
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*/
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mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
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values[0] = font_height;
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values[1] = font_height;
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values[0] = font.height;
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values[1] = font.height;
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xcb_configure_window(xcb_connection,
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client,
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mask,
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@ -649,10 +580,10 @@ static void handle_configure_request(xcb_configure_request_event_t *event) {
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continue;
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xcb_rectangle_t rect;
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rect.x = output->rect.w - (clients * (font_height + 2));
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rect.x = output->rect.w - (clients * (font.height + 2));
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rect.y = 2;
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rect.width = font_height;
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rect.height = font_height;
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rect.width = font.height;
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rect.height = font.height;
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DLOG("This is a tray window. x = %d\n", rect.x);
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fake_configure_notify(xcb_connection, rect, event->window, 0);
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@ -778,6 +709,7 @@ char *init_xcb_early() {
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ELOG("Cannot open display\n");
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exit(EXIT_FAILURE);
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}
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conn = xcb_connection;
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DLOG("Connected to xcb\n");
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/* We have to request the atoms we need */
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@ -869,29 +801,16 @@ char *init_xcb_early() {
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*
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*/
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void init_xcb_late(char *fontname) {
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if (fontname == NULL) {
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/* XXX: font fallback to 'misc' like i3 does it would be good. */
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if (fontname == NULL)
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fontname = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
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}
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/* We load and allocate the font */
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xcb_font = xcb_generate_id(xcb_connection);
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xcb_void_cookie_t open_font_cookie;
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open_font_cookie = xcb_open_font_checked(xcb_connection,
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xcb_font,
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strlen(fontname),
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fontname);
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/* Load the font */
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font = load_font(fontname, true);
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set_font(&font);
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DLOG("Calculated Font-height: %d\n", font.height);
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/* We need to save info about the font, because we need the font's height and
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* information about the width of characters */
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xcb_query_font_cookie_t query_font_cookie;
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query_font_cookie = xcb_query_font(xcb_connection,
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xcb_font);
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xcb_change_gc(xcb_connection,
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statusline_ctx,
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XCB_GC_FONT,
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(uint32_t[]){ xcb_font });
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/* Set the font in the gc */
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xcb_change_gc(xcb_connection, statusline_ctx, XCB_GC_FONT, (uint32_t[]){ font.id });
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xcb_flush(xcb_connection);
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@ -936,25 +855,6 @@ void init_xcb_late(char *fontname) {
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ev_io_start(main_loop, xkb_io);
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XFlush(xkb_dpy);
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}
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/* Now we save the font-infos */
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font_info = xcb_query_font_reply(xcb_connection,
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query_font_cookie,
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NULL);
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if (xcb_request_failed(open_font_cookie, "Could not open font")) {
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exit(EXIT_FAILURE);
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}
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font_height = font_info->font_ascent + font_info->font_descent;
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if (xcb_query_font_char_infos_length(font_info) == 0) {
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font_table = NULL;
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} else {
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font_table = xcb_query_font_char_infos(font_info);
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}
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DLOG("Calculated Font-height: %d\n", font_height);
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}
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/*
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@ -1084,7 +984,6 @@ void clean_xcb() {
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FREE(xcb_chk);
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FREE(xcb_prep);
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FREE(xcb_io);
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FREE(font_info);
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}
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/*
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@ -1137,7 +1036,7 @@ void realloc_sl_buffer() {
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xcb_screen->height_in_pixels);
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uint32_t mask = XCB_GC_FOREGROUND;
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uint32_t vals[3] = { colors.bar_bg, colors.bar_bg, xcb_font };
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uint32_t vals[3] = { colors.bar_bg, colors.bar_bg, font.id };
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xcb_free_gc(xcb_connection, statusline_clear);
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statusline_clear = xcb_generate_id(xcb_connection);
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xcb_void_cookie_t clear_ctx_cookie = xcb_create_gc_checked(xcb_connection,
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@ -1207,8 +1106,8 @@ void reconfig_windows() {
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xcb_screen->root_depth,
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walk->bar,
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xcb_root,
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walk->rect.x, walk->rect.y + walk->rect.h - font_height - 6,
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walk->rect.w, font_height + 6,
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walk->rect.x, walk->rect.y + walk->rect.h - font.height - 6,
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walk->rect.w, font.height + 6,
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1,
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XCB_WINDOW_CLASS_INPUT_OUTPUT,
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xcb_screen->root_visual,
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@ -1282,12 +1181,12 @@ void reconfig_windows() {
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case POS_NONE:
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break;
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case POS_TOP:
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strut_partial.top = font_height + 6;
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strut_partial.top = font.height + 6;
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strut_partial.top_start_x = walk->rect.x;
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strut_partial.top_end_x = walk->rect.x + walk->rect.w;
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break;
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case POS_BOT:
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strut_partial.bottom = font_height + 6;
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strut_partial.bottom = font.height + 6;
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strut_partial.bottom_start_x = walk->rect.x;
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strut_partial.bottom_end_x = walk->rect.x + walk->rect.w;
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break;
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@ -1305,7 +1204,7 @@ void reconfig_windows() {
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* with which we draw to them) */
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walk->bargc = xcb_generate_id(xcb_connection);
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mask = XCB_GC_FONT;
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values[0] = xcb_font;
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values[0] = font.id;
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xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(xcb_connection,
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walk->bargc,
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walk->bar,
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@ -1343,9 +1242,9 @@ void reconfig_windows() {
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XCB_CONFIG_WINDOW_HEIGHT |
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XCB_CONFIG_WINDOW_STACK_MODE;
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values[0] = walk->rect.x;
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values[1] = walk->rect.y + walk->rect.h - font_height - 6;
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values[1] = walk->rect.y + walk->rect.h - font.height - 6;
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values[2] = walk->rect.w;
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values[3] = font_height + 6;
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values[3] = font.height + 6;
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values[4] = XCB_STACK_MODE_ABOVE;
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DLOG("Destroying buffer for output %s", walk->name);
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@ -1401,7 +1300,7 @@ void draw_bars() {
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outputs_walk->bargc,
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XCB_GC_FOREGROUND,
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&color);
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xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font_height + 6 };
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xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font.height + 6 };
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xcb_poly_fill_rectangle(xcb_connection,
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outputs_walk->buffer,
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outputs_walk->bargc,
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@ -1422,7 +1321,7 @@ void draw_bars() {
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/* We assume the tray icons are quadratic (we use the font
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* *height* as *width* of the icons) because we configured them
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* like this. */
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traypx += font_height + 2;
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traypx += font.height + 2;
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}
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/* Add 2px of padding if there are any tray icons */
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if (traypx > 0)
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@ -1433,7 +1332,7 @@ void draw_bars() {
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outputs_walk->bargc,
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MAX(0, (int16_t)(statusline_width - outputs_walk->rect.w + 4)), 0,
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MAX(0, (int16_t)(outputs_walk->rect.w - statusline_width - traypx - 4)), 3,
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MIN(outputs_walk->rect.w - traypx - 4, statusline_width), font_height);
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MIN(outputs_walk->rect.w - traypx - 4, statusline_width), font.height);
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}
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if (config.disable_ws) {
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@ -1467,7 +1366,7 @@ void draw_bars() {
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outputs_walk->bargc,
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mask,
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vals);
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xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font_height + 4 };
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xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font.height + 4 };
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xcb_poly_fill_rectangle(xcb_connection,
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outputs_walk->buffer,
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outputs_walk->bargc,
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@ -1477,12 +1376,8 @@ void draw_bars() {
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outputs_walk->bargc,
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XCB_GC_FOREGROUND,
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&fg_color);
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xcb_image_text_16(xcb_connection,
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ws_walk->name_glyphs,
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outputs_walk->buffer,
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outputs_walk->bargc,
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i + 5, font_info->font_ascent + 2,
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ws_walk->ucs2_name);
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draw_text((char*)ws_walk->ucs2_name, ws_walk->name_glyphs, true,
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outputs_walk->buffer, outputs_walk->bargc, i + 5, 2);
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i += 10 + ws_walk->name_width;
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}
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@ -27,10 +27,17 @@ typedef struct Font i3Font;
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*
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*/
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struct Font {
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/** The height of the font, built from font_ascent + font_descent */
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int height;
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/** The xcb-id for the font */
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xcb_font_t id;
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/** Font information gathered from the server */
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xcb_query_font_reply_t *info;
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/** Font table for this font (may be NULL) */
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xcb_charinfo_t *table;
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/** The height of the font, built from font_ascent + font_descent */
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int height;
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};
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/* Since this file also gets included by utilities which don’t use the i3 log
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@ -195,4 +202,27 @@ char *convert_ucs2_to_utf8(xcb_char2b_t *text, size_t num_glyphs);
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*/
|
||||
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
|
||||
|
|
|
@ -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
|
||||
*
|
||||
|
|
|
@ -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 <assert.h>
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include <err.h>
|
||||
|
||||
#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;
|
||||
}
|
|
@ -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 <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include <err.h>
|
||||
|
||||
#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;
|
||||
}
|
|
@ -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;
|
||||
|
|
|
@ -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
|
||||
|
|
|
@ -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 */
|
||||
|
|
26
src/xcb.c
26
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
|
||||
*
|
||||
|
|
Loading…
Reference in New Issue