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Diffstat (limited to 'pango/serializer.c')
-rw-r--r--pango/serializer.c383
1 files changed, 382 insertions, 1 deletions
diff --git a/pango/serializer.c b/pango/serializer.c
index fdaba728..855fafea 100644
--- a/pango/serializer.c
+++ b/pango/serializer.c
@@ -25,7 +25,9 @@
#include <pango/pango-layout-private.h>
#include <pango/pango-context-private.h>
#include <pango/pango-enum-types.h>
+#include <pango/pango-font-private.h>
+#include <hb-ot.h>
#include <json-glib/json-glib.h>
/* {{{ Error handling */
@@ -257,7 +259,7 @@ add_context (JsonBuilder *builder,
json_builder_set_member_name (builder, "gravity-hint");
add_enum_value (builder, PANGO_TYPE_GRAVITY_HINT, context->gravity_hint, FALSE);
- json_builder_set_member_name (builder, "direction");
+ json_builder_set_member_name (builder, "base-dir");
add_enum_value (builder, PANGO_TYPE_DIRECTION, context->base_dir, FALSE);
json_builder_set_member_name (builder, "round-glyph-positions");
@@ -280,6 +282,379 @@ add_context (JsonBuilder *builder,
json_builder_end_object (builder);
}
+static void
+add_log_attrs (JsonBuilder *builder,
+ PangoLayout *layout)
+{
+ const PangoLogAttr *log_attrs;
+ int n_attrs;
+
+ json_builder_set_member_name (builder, "log-attrs");
+ json_builder_begin_array (builder);
+
+ log_attrs = pango_layout_get_log_attrs_readonly (layout, &n_attrs);
+ for (int i = 0; i < n_attrs; i++)
+ {
+ json_builder_begin_object (builder);
+ if (log_attrs[i].is_line_break)
+ {
+ json_builder_set_member_name (builder, "line-break");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_mandatory_break)
+ {
+ json_builder_set_member_name (builder, "mandatory-break");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_char_break)
+ {
+ json_builder_set_member_name (builder, "char-break");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_white)
+ {
+ json_builder_set_member_name (builder, "white");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_cursor_position)
+ {
+ json_builder_set_member_name (builder, "cursor-position");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_word_start)
+ {
+ json_builder_set_member_name (builder, "word-start");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_word_end)
+ {
+ json_builder_set_member_name (builder, "word-end");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_sentence_boundary)
+ {
+ json_builder_set_member_name (builder, "sentence-boundary");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_sentence_start)
+ {
+ json_builder_set_member_name (builder, "sentence-start");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_sentence_end)
+ {
+ json_builder_set_member_name (builder, "sentence-end");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].backspace_deletes_character)
+ {
+ json_builder_set_member_name (builder, "backspace-deletes-character");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_expandable_space)
+ {
+ json_builder_set_member_name (builder, "expandable-space");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].is_word_boundary)
+ {
+ json_builder_set_member_name (builder, "word-boundary");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].break_inserts_hyphen)
+ {
+ json_builder_set_member_name (builder, "break-inserts-hyphen");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ if (log_attrs[i].break_removes_preceding)
+ {
+ json_builder_set_member_name (builder, "break-removes_preceding");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+ json_builder_end_object (builder);
+ }
+
+ json_builder_end_array (builder);
+}
+
+static void
+add_font (JsonBuilder *builder,
+ PangoFont *font)
+{
+ PangoFontDescription *desc;
+ char *str;
+ hb_font_t *hb_font;
+ hb_face_t *face;
+ hb_blob_t *blob;
+ const char *data;
+ guint length;
+ const int *coords;
+ hb_feature_t features[32];
+ PangoMatrix matrix;
+
+ json_builder_begin_object (builder);
+
+ json_builder_set_member_name (builder, "description");
+
+ desc = pango_font_describe (font);
+ str = pango_font_description_to_string (desc);
+ json_builder_add_string_value (builder, str);
+ g_free (str);
+ pango_font_description_free (desc);
+
+ hb_font = pango_font_get_hb_font (font);
+ face = hb_font_get_face (hb_font);
+ blob = hb_face_reference_blob (face);
+
+ data = hb_blob_get_data (blob, &length);
+ str = g_compute_checksum_for_data (G_CHECKSUM_SHA256, (const guchar *)data, length);
+
+ json_builder_set_member_name (builder, "checksum");
+ json_builder_add_string_value (builder, str);
+
+ g_free (str);
+ hb_blob_destroy (blob);
+
+ coords = hb_font_get_var_coords_normalized (hb_font, &length);
+ if (length > 0)
+ {
+ guint count;
+ hb_ot_var_axis_info_t *axes;
+
+ count = hb_ot_var_get_axis_count (face);
+ g_assert (count == length);
+
+ axes = g_alloca (count * sizeof (hb_ot_var_axis_info_t));
+ hb_ot_var_get_axis_infos (face, 0, &count, axes);
+
+ json_builder_set_member_name (builder, "variations");
+ json_builder_begin_object (builder);
+
+ for (int i = 0; i < length; i++)
+ {
+ char buf[5] = { 0, };
+
+ hb_tag_to_string (axes[i].tag, buf);
+ json_builder_set_member_name (builder, buf);
+ json_builder_add_int_value (builder, coords[i]);
+ }
+
+ json_builder_end_object (builder);
+ }
+
+ length = 0;
+ pango_font_get_features (font, features, G_N_ELEMENTS (features), &length);
+ if (length > 0)
+ {
+ json_builder_set_member_name (builder, "features");
+ json_builder_begin_object (builder);
+
+ for (int i = 0; i < length; i++)
+ {
+ char buf[5] = { 0, };
+
+ hb_tag_to_string (features[i].tag, buf);
+ json_builder_set_member_name (builder, buf);
+ json_builder_add_int_value (builder, features[i].value);
+ }
+
+ json_builder_end_object (builder);
+ }
+
+ pango_font_get_matrix (font, &matrix);
+ if (memcmp (&matrix, &(PangoMatrix)PANGO_MATRIX_INIT, sizeof (PangoMatrix)) != 0)
+ {
+ json_builder_set_member_name (builder, "matrix");
+ json_builder_begin_array (builder);
+ json_builder_add_double_value (builder, matrix.xx);
+ json_builder_add_double_value (builder, matrix.xy);
+ json_builder_add_double_value (builder, matrix.yx);
+ json_builder_add_double_value (builder, matrix.yy);
+ json_builder_add_double_value (builder, matrix.x0);
+ json_builder_add_double_value (builder, matrix.y0);
+ json_builder_end_array (builder);
+ }
+
+ json_builder_end_object (builder);
+}
+
+#define ANALYSIS_FLAGS (PANGO_ANALYSIS_FLAG_CENTERED_BASELINE | \
+ PANGO_ANALYSIS_FLAG_IS_ELLIPSIS | \
+ PANGO_ANALYSIS_FLAG_NEED_HYPHEN)
+
+static void
+add_run (JsonBuilder *builder,
+ PangoLayout *layout,
+ PangoLayoutRun *run)
+{
+ json_builder_begin_object (builder);
+ char *str;
+
+ json_builder_set_member_name (builder, "offset");
+ json_builder_add_int_value (builder, run->item->offset);
+
+ json_builder_set_member_name (builder, "length");
+ json_builder_add_int_value (builder, run->item->length);
+
+ str = g_strndup (layout->text + run->item->offset, run->item->length);
+ json_builder_set_member_name (builder, "text");
+ json_builder_add_string_value (builder, str);
+ g_free (str);
+
+ json_builder_set_member_name (builder, "bidi-level");
+ json_builder_add_int_value (builder, run->item->analysis.level);
+
+ json_builder_set_member_name (builder, "gravity");
+ add_enum_value (builder, PANGO_TYPE_GRAVITY, run->item->analysis.gravity, FALSE);
+
+ json_builder_set_member_name (builder, "language");
+ json_builder_add_string_value (builder, pango_language_to_string (run->item->analysis.language));
+
+ json_builder_set_member_name (builder, "script");
+ add_enum_value (builder, PANGO_TYPE_SCRIPT, run->item->analysis.script, FALSE);
+
+ json_builder_set_member_name (builder, "font");
+ add_font (builder, run->item->analysis.font);
+
+ json_builder_set_member_name (builder, "flags");
+ json_builder_add_int_value (builder, run->item->analysis.flags & ANALYSIS_FLAGS);
+
+ if (run->item->analysis.extra_attrs)
+ {
+ GSList *l;
+
+ json_builder_set_member_name (builder, "extra-attributes");
+
+ json_builder_begin_array (builder);
+ for (l = run->item->analysis.extra_attrs; l; l = l->next)
+ {
+ PangoAttribute *attr = l->data;
+ add_attribute (builder, attr);
+ }
+ json_builder_end_array (builder);
+ }
+
+ json_builder_set_member_name (builder, "y-offset");
+ json_builder_add_int_value (builder, run->y_offset);
+
+ json_builder_set_member_name (builder, "start-x-offset");
+ json_builder_add_int_value (builder, run->start_x_offset);
+
+ json_builder_set_member_name (builder, "end-x-offset");
+ json_builder_add_int_value (builder, run->end_x_offset);
+
+ json_builder_set_member_name (builder, "glyphs");
+ json_builder_begin_array (builder);
+ for (int i = 0; i < run->glyphs->num_glyphs; i++)
+ {
+ json_builder_begin_object (builder);
+
+ json_builder_set_member_name (builder, "glyph");
+ json_builder_add_int_value (builder, run->glyphs->glyphs[i].glyph);
+
+ json_builder_set_member_name (builder, "width");
+ json_builder_add_int_value (builder, run->glyphs->glyphs[i].geometry.width);
+
+ if (run->glyphs->glyphs[i].geometry.x_offset != 0)
+ {
+ json_builder_set_member_name (builder, "x-offset");
+ json_builder_add_int_value (builder, run->glyphs->glyphs[i].geometry.x_offset);
+ }
+
+ if (run->glyphs->glyphs[i].geometry.y_offset != 0)
+ {
+ json_builder_set_member_name (builder, "y-offset");
+ json_builder_add_int_value (builder, run->glyphs->glyphs[i].geometry.y_offset);
+ }
+
+ if (run->glyphs->glyphs[i].attr.is_cluster_start)
+ {
+ json_builder_set_member_name (builder, "is-cluster-start");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+
+ if (run->glyphs->glyphs[i].attr.is_color)
+ {
+ json_builder_set_member_name (builder, "is-color");
+ json_builder_add_boolean_value (builder, TRUE);
+ }
+
+ json_builder_set_member_name (builder, "log-cluster");
+ json_builder_add_int_value (builder, run->glyphs->log_clusters[i]);
+
+ json_builder_end_object (builder);
+ }
+
+ json_builder_end_array (builder);
+
+ json_builder_end_object (builder);
+}
+
+#undef ANALYSIS_FLAGS
+
+static void
+add_line (JsonBuilder *builder,
+ PangoLayoutLine *line)
+{
+ json_builder_begin_object (builder);
+
+ json_builder_set_member_name (builder, "start-index");
+ json_builder_add_int_value (builder, line->start_index);
+
+ json_builder_set_member_name (builder, "length");
+ json_builder_add_int_value (builder, line->length);
+
+ json_builder_set_member_name (builder, "paragraph-start");
+ json_builder_add_boolean_value (builder, line->is_paragraph_start);
+
+ json_builder_set_member_name (builder, "direction");
+ add_enum_value (builder, PANGO_TYPE_DIRECTION, line->resolved_dir, FALSE);
+
+ json_builder_set_member_name (builder, "runs");
+ json_builder_begin_array (builder);
+ for (GSList *l = line->runs; l; l = l->next)
+ {
+ PangoLayoutRun *run = l->data;
+ add_run (builder, line->layout, run);
+ }
+ json_builder_end_array (builder);
+
+ json_builder_end_object (builder);
+}
+
+static void
+add_output (JsonBuilder *builder,
+ PangoLayout *layout)
+{
+ int width, height;
+
+ json_builder_begin_object (builder);
+
+ json_builder_set_member_name (builder, "is-wrapped");
+ json_builder_add_boolean_value (builder, pango_layout_is_wrapped (layout));
+
+ json_builder_set_member_name (builder, "is-ellipsized");
+ json_builder_add_boolean_value (builder, pango_layout_is_ellipsized (layout));
+
+ pango_layout_get_size (layout, &width, &height);
+ json_builder_set_member_name (builder, "width");
+ json_builder_add_int_value (builder, width);
+ json_builder_set_member_name (builder, "height");
+ json_builder_add_int_value (builder, height);
+
+ add_log_attrs (builder, layout);
+ json_builder_set_member_name (builder, "lines");
+ json_builder_begin_array (builder);
+ for (GSList *l = layout->lines; l; l = l->next)
+ {
+ PangoLayoutLine *line = l->data;
+ add_line (builder, line);
+ }
+ json_builder_end_array (builder);
+
+ json_builder_end_object (builder);
+}
+
static JsonNode *
layout_to_json (PangoLayout *layout,
PangoLayoutSerializeFlags flags)
@@ -384,6 +759,12 @@ layout_to_json (PangoLayout *layout,
json_builder_add_double_value (builder, layout->line_spacing);
}
+ if (flags & PANGO_LAYOUT_SERIALIZE_OUTPUT)
+ {
+ json_builder_set_member_name (builder, "output");
+ add_output (builder, layout);
+ }
+
json_builder_end_object (builder);
root = json_builder_get_root (builder);
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