[pango/simple-fontmap: 23/26] Add gravity

[Matthias Clasen <matthiasc src gnome org>]

commit 6a2e8099787bae816504debc4a7292f2696adf3d
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Sep 2 00:03:43 2021 -0400

    Add gravity
    
    Rotate glyphs of PangoHbFont according to gravity.

 pango/pango-hbfont-private.h | 1 +
 pango/pango-hbfont.c         | 4 +++-
 pango/pango-hbfont.h         | 3 ++-
 pango/pango-simplefontmap.c  | 3 ++-
 pango/pangocairo-fcfont.c    | 8 +++++++-
 5 files changed, 15 insertions(+), 4 deletions(-)
---
diff --git a/pango/pango-hbfont-private.h b/pango/pango-hbfont-private.h
index 96bc1efc..82f4849a 100644
--- a/pango/pango-hbfont-private.h
+++ b/pango/pango-hbfont-private.h
@@ -10,4 +10,5 @@ struct _PangoHbFont
 
   PangoHbFace *face;
   PangoFontDescription *description;
+  PangoGravity gravity;
 };
diff --git a/pango/pango-hbfont.c b/pango/pango-hbfont.c
index 8193a29b..8c92911c 100644
--- a/pango/pango-hbfont.c
+++ b/pango/pango-hbfont.c
@@ -305,7 +305,8 @@ pango_hb_font_class_init (PangoHbFontClass *class)
 
 PangoHbFont *
 pango_hb_font_new (PangoHbFace                *face,
-                   const PangoFontDescription *description)
+                   const PangoFontDescription *description,
+                   PangoGravity                gravity)
 {
   PangoHbFont *font;
 
@@ -313,6 +314,7 @@ pango_hb_font_new (PangoHbFace                *face,
 
   font->face = g_object_ref (face);
   font->description = pango_font_description_copy (description);
+  font->gravity = gravity;
 
   return font;
 }
diff --git a/pango/pango-hbfont.h b/pango/pango-hbfont.h
index 67a5cd5f..a159897b 100644
--- a/pango/pango-hbfont.h
+++ b/pango/pango-hbfont.h
@@ -34,6 +34,7 @@ G_DECLARE_FINAL_TYPE (PangoHbFont, pango_hb_font, PANGO, HB_FONT, PangoFont)
 
 PANGO_AVAILABLE_IN_1_50
 PangoHbFont *pango_hb_font_new (PangoHbFace                *face,
-                                const PangoFontDescription *description);
+                                const PangoFontDescription *description,
+                                PangoGravity                gravity);
 
 G_END_DECLS
diff --git a/pango/pango-simplefontmap.c b/pango/pango-simplefontmap.c
index 3b452df0..a3297908 100644
--- a/pango/pango-simplefontmap.c
+++ b/pango/pango-simplefontmap.c
@@ -26,6 +26,7 @@
 #include "pango-simplefontmap.h"
 #include "pango-hbface-private.h"
 #include "pango-hbfont-private.h"
+#include "pango-context.h"
 
 struct _PangoSimpleFontMap
 {
@@ -213,7 +214,7 @@ pango_simple_font_map_load_font (PangoFontMap               *map,
   if (face == NULL)
     face = g_ptr_array_index (self->faces, 0);
 
-  return PANGO_FONT (pango_hb_font_new (face, desc));
+  return PANGO_FONT (pango_hb_font_new (face, desc, pango_context_get_gravity (context)));
 }
 
 static PangoFontset *
diff --git a/pango/pangocairo-fcfont.c b/pango/pangocairo-fcfont.c
index b5ef0fee..7de5e2ab 100644
--- a/pango/pangocairo-fcfont.c
+++ b/pango/pangocairo-fcfont.c
@@ -307,15 +307,21 @@ create_scaled_font (PangoHbFont *font)
 
   cairo_face = cairo_ft_font_face_create_for_ft_face (ft_face, FT_LOAD_NO_HINTING | FT_LOAD_COLOR);
 
-  cairo_matrix_t ctm, font_matrix;
+  cairo_matrix_t ctm, font_matrix, gravity_matrix;
   cairo_font_options_t *font_options;
 
   size = pango_font_description_get_size (font->description);
 
+  cairo_matrix_init_rotate (&gravity_matrix,
+                            pango_gravity_to_rotation (font->gravity));
+
   cairo_matrix_init_identity (&ctm);
   cairo_matrix_init_scale (&font_matrix,
                            size * (96. / 72.) / PANGO_SCALE,
                            size * (96. / 72) / PANGO_SCALE);
+  cairo_matrix_multiply (&font_matrix,
+                         &font_matrix,
+                         &gravity_matrix);
   font_options = cairo_font_options_create ();
   cairo_font_options_set_hint_style (font_options, CAIRO_HINT_STYLE_NONE);
   cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF);