diff options
| -rw-r--r-- | utils/viewer-pangocairo.c | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/utils/viewer-pangocairo.c b/utils/viewer-pangocairo.c index 77201666..1c0494de 100644 --- a/utils/viewer-pangocairo.c +++ b/utils/viewer-pangocairo.c @@ -157,7 +157,8 @@ enum { ANNOTATE_RUN_EXTENTS = 32, ANNOTATE_CLUSTER_EXTENTS = 64, ANNOTATE_CHAR_EXTENTS = 128, - ANNOTATE_LAST = 256, + ANNOTATE_CARET_POSITIONS = 256, + ANNOTATE_LAST = 512, }; static void @@ -405,6 +406,53 @@ render_callback (PangoLayout *layout, pango_layout_iter_free (iter); cairo_restore (cr); } + + if (annotate & ANNOTATE_CARET_POSITIONS) + { + /* draw the caret positions in purple */ + cairo_save (cr); + cairo_set_source_rgba (cr, 1.0, 0.0, 1.0, 0.5); + + iter = pango_layout_get_iter (layout); + do + { + PangoRectangle rect; + PangoLayoutRun *run; + const char *text, *start, *end, *p; + + pango_layout_iter_get_run_extents (iter, NULL, &rect); + run = pango_layout_iter_get_run_readonly (iter); + + if (!run) + continue; + + text = pango_layout_get_text (layout); + start =text + run->item->offset; + end = start + run->item->length; + for (p = start; p < end; p = g_utf8_next_char (p)) + { + int x, y; + + pango_glyph_string_index_to_x (run->glyphs, + text + run->item->offset, + run->item->length, + &run->item->analysis, + p - start, + FALSE, + &x); + x += rect.x; + y = pango_layout_iter_get_baseline (iter); + + cairo_arc (cr, x / PANGO_SCALE, y / PANGO_SCALE, 3.0, 0, 2*G_PI); + cairo_close_path (cr); + cairo_fill (cr); + } + } + while (pango_layout_iter_next_run (iter)); + pango_layout_iter_free (iter); + + cairo_restore (cr); + } } cairo_move_to (cr, 0, 0); @@ -559,7 +607,9 @@ pangocairo_view_get_option_group (const PangoViewer *klass G_GNUC_UNUSED) "\t\t\t\t\t\t\t 16 - line extents\n" "\t\t\t\t\t\t\t 32 - run extents\n" "\t\t\t\t\t\t\t 64 - cluster extents\n" - "\t\t\t\t\t\t\t 128 - char extents", "FLAGS"}, + "\t\t\t\t\t\t\t 128 - char extents\n" + "\t\t\t\t\t\t\t 256 - caret positions", + "FLAGS"}, {NULL} }; GOptionGroup *group; |