-/*
- * 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;
- }
-}
-
-/*
- * Converts a colorstring to a colorpixel as expected from xcb_change_gc.
- * s is assumed to be in the format "rrggbb"
- *
- */
-uint32_t get_colorpixel(const char *s) {
- char strings[3][3] = { { s[0], s[1], '\0'} ,
- { s[2], s[3], '\0'} ,
- { s[4], s[5], '\0'} };
- uint8_t r = strtol(strings[0], NULL, 16);
- uint8_t g = strtol(strings[1], NULL, 16);
- uint8_t b = strtol(strings[2], NULL, 16);
- return (r << 16 | g << 8 | b);
-}
-