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-rw-r--r--utils/viewer-pangocairo.c80
1 files changed, 69 insertions, 11 deletions
diff --git a/utils/viewer-pangocairo.c b/utils/viewer-pangocairo.c
index 4b27c7e5..1bc9f025 100644
--- a/utils/viewer-pangocairo.c
+++ b/utils/viewer-pangocairo.c
@@ -149,16 +149,17 @@ pangocairo_view_destroy_surface (gpointer instance,
}
enum {
- ANNOTATE_GRAVITY_ROOF = 1,
- ANNOTATE_BLOCK_PROGRESSION = 2,
- ANNOTATE_BASELINES = 4,
- ANNOTATE_LAYOUT_EXTENTS = 8,
- ANNOTATE_LINE_EXTENTS = 16,
- ANNOTATE_RUN_EXTENTS = 32,
- ANNOTATE_CLUSTER_EXTENTS = 64,
- ANNOTATE_CHAR_EXTENTS = 128,
- ANNOTATE_CARET_POSITIONS = 256,
- ANNOTATE_LAST = 512,
+ ANNOTATE_GRAVITY_ROOF = 1,
+ ANNOTATE_BLOCK_PROGRESSION = 2,
+ ANNOTATE_BASELINES = 4,
+ ANNOTATE_LAYOUT_EXTENTS = 8,
+ ANNOTATE_LINE_EXTENTS = 16,
+ ANNOTATE_RUN_EXTENTS = 32,
+ ANNOTATE_CLUSTER_EXTENTS = 64,
+ ANNOTATE_CHAR_EXTENTS = 128,
+ ANNOTATE_GLYPH_EXTENTS = 256,
+ ANNOTATE_CARET_POSITIONS = 512,
+ ANNOTATE_LAST = 1024,
};
static void
@@ -407,6 +408,62 @@ render_callback (PangoLayout *layout,
cairo_restore (cr);
}
+ if (annotate & ANNOTATE_GLYPH_EXTENTS)
+ {
+ /* draw the glyph_extents in blue */
+ cairo_save (cr);
+ cairo_set_source_rgba (cr, 0.0, 0.0, 1.0, 0.5);
+
+ iter = pango_layout_get_iter (layout);
+ do
+ {
+ PangoLayoutRun *run;
+ PangoRectangle rect;
+ int x_pos, y_pos;
+
+ run = pango_layout_iter_get_run (iter);
+ if (!run)
+ continue;
+
+ pango_layout_iter_get_run_extents (iter, NULL, &rect);
+
+ x_pos = rect.x;
+ y_pos = rect.y + pango_layout_iter_get_baseline (iter);
+
+ for (int i = 0; i < run->glyphs->num_glyphs; i++)
+ {
+ PangoRectangle extents;
+
+ pango_font_get_glyph_extents (run->item->analysis.font,
+ run->glyphs->glyphs[i].glyph,
+ &extents, NULL);
+
+ rect.x = x_pos + run->glyphs->glyphs[i].geometry.x_offset + extents.x;
+ rect.y = y_pos + run->glyphs->glyphs[i].geometry.y_offset + extents.y;
+ rect.width = extents.width;
+ rect.height = extents.height;
+
+ cairo_rectangle (cr,
+ (double)rect.x / PANGO_SCALE - lw / 2,
+ (double)rect.y / PANGO_SCALE - lw / 2,
+ (double)rect.width / PANGO_SCALE + lw,
+ (double)rect.height / PANGO_SCALE + lw);
+ cairo_stroke (cr);
+
+ cairo_arc (cr,
+ (double) (x_pos + run->glyphs->glyphs[i].geometry.x_offset) / PANGO_SCALE,
+ (double) (y_pos + run->glyphs->glyphs[i].geometry.y_offset) / PANGO_SCALE,
+ 3.0, 0, 2*G_PI);
+ cairo_fill (cr);
+
+ x_pos += run->glyphs->glyphs[i].geometry.width;
+ }
+ }
+ while (pango_layout_iter_next_run (iter));
+ pango_layout_iter_free (iter);
+ cairo_restore (cr);
+ }
+
if (annotate & ANNOTATE_CARET_POSITIONS)
{
const PangoLogAttr *attrs;
@@ -634,7 +691,8 @@ pangocairo_view_get_option_group (const PangoViewer *klass G_GNUC_UNUSED)
"\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\n"
- "\t\t\t\t\t\t\t 256 - caret positions",
+ "\t\t\t\t\t\t\t 256 - glyph extents\n"
+ "\t\t\t\t\t\t\t 512 - caret positions",
"FLAGS"},
{NULL}
};