app: take the rendering direction into account when adjusting the x-offset

Move the layout to the right edge of the bounding box if LTR and RIGHT
*or* RTL and LEFT.

app/text/gimptext-vectors.c

@@ -82,7 +82,7 @@ gimp_text_vectors_new (GimpImage *image,
       cr = cairo_create (surface);
 
       layout = gimp_text_layout_new (text, image);
-      gimp_text_layout_render (layout, cr, TRUE);
+      gimp_text_layout_render (layout, cr, text->base_dir, TRUE);
       g_object_unref (layout);
 
       gimp_text_render_vectors (cr, &context);

app/text/gimptextlayer.c

@@ -632,7 +632,7 @@ gimp_text_layer_render_layout (GimpTextLayer  *layer,
 
   cr = cairo_create (surface);
 
-  gimp_text_layout_render (layout, cr, FALSE);
+  gimp_text_layout_render (layout, cr, layer->text->base_dir, FALSE);
 
   mask = tile_manager_new ( width, height, 1);
   pixel_region_init (&maskPR, mask, 0, 0, width, height, TRUE);

app/text/gimptextlayout-render.c

@@ -33,9 +33,10 @@
 
 
 void
-gimp_text_layout_render (GimpTextLayout *layout,
-                         cairo_t        *cr,
-                         gboolean        path)
+gimp_text_layout_render (GimpTextLayout    *layout,
+                         cairo_t           *cr,
+                         GimpTextDirection  base_dir,
+                         gboolean           path)
 {
   PangoLayout    *pango_layout;
   cairo_matrix_t  trafo;
@@ -48,29 +49,27 @@ gimp_text_layout_render (GimpTextLayout *layout,
 
   pango_layout = gimp_text_layout_get_pango_layout (layout);
 
-  /* If the width of the layout is > 0, then the text-box is FIXED
-   * and the layout position should be offset if the alignment
-   * is centered or right-aligned*/
+  /* If the width of the layout is > 0, then the text-box is FIXED and
+   * the layout position should be offset if the alignment is centered
+   * or right-aligned, also adjust for RTL text direction.
+   */
   if (pango_layout_get_width (pango_layout) > 0)
     {
-      gint width;
+      PangoAlignment align = pango_layout_get_alignment (pango_layout);
+      gint           width;
 
       pango_layout_get_pixel_size (pango_layout, &width, NULL);
 
-      switch (pango_layout_get_alignment (pango_layout))
+      if ((base_dir == GIMP_TEXT_DIRECTION_LTR && align == PANGO_ALIGN_RIGHT) ||
+          (base_dir == GIMP_TEXT_DIRECTION_RTL && align == PANGO_ALIGN_LEFT))
         {
-        case PANGO_ALIGN_LEFT:
-          break;
-
-        case PANGO_ALIGN_RIGHT:
           x += PANGO_PIXELS (pango_layout_get_width (pango_layout)) - width;
-          break;
-
-        case PANGO_ALIGN_CENTER:
+        }
+      else if (align == PANGO_ALIGN_CENTER)
+        {
           x += (PANGO_PIXELS (pango_layout_get_width (pango_layout))
                 - width) / 2;
-          break;
-        }
+       }
     }
 
   cairo_translate (cr, x, y);

app/text/gimptextlayout-render.h

@@ -22,9 +22,10 @@
 #define __GIMP_TEXT_LAYOUT_RENDER_H__
 
 
-void  gimp_text_layout_render (GimpTextLayout *layout,
-                               cairo_t        *cr,
-                               gboolean        path);
+void  gimp_text_layout_render (GimpTextLayout    *layout,
+                               cairo_t           *cr,
+                               GimpTextDirection  base_dir,
+                               gboolean           path);
 
 
 #endif /* __GIMP_TEXT_LAYOUT_RENDER_H__ */