diff options
Diffstat (limited to 'pango/pangocairo-font.c')
| -rw-r--r-- | pango/pangocairo-font.c | 161 |
1 files changed, 153 insertions, 8 deletions
diff --git a/pango/pangocairo-font.c b/pango/pangocairo-font.c index 598065c0..e265e540 100644 --- a/pango/pangocairo-font.c +++ b/pango/pangocairo-font.c @@ -28,6 +28,17 @@ #include "pangocairo-private.h" #include "pango-font-private.h" #include "pango-impl-utils.h" +#include "pango-hbfont-private.h" +#include "pango-hbface-private.h" +#include "pangocairo-fc.h" + +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wundef" +#include <cairo-ft.h> +#pragma GCC diagnostic pop + +#include <hb-ft.h> +#include <freetype/ftmm.h> #define PANGO_CAIRO_FONT_PRIVATE(font) \ ((PangoCairoFontPrivate *) \ @@ -60,6 +71,61 @@ _pango_cairo_font_private_scaled_font_data_destroy (PangoCairoFontPrivateScaledF } } +static FT_Library ft_library; + +static cairo_font_face_t * +create_font_face_for_hb_font (PangoHbFont *font) +{ + hb_blob_t *blob; + const char *blob_data; + unsigned int blob_length; + FT_Face ft_face; + hb_font_t *hb_font; + unsigned int num_coords; + const int *coords; + cairo_font_face_t *cairo_face; + static const cairo_user_data_key_t key; + FT_Error error; + + if (g_once_init_enter (&ft_library)) + { + FT_Library library; + FT_Init_FreeType (&library); + g_once_init_leave (&ft_library, library); + } + + blob = hb_face_reference_blob (hb_font_get_face (pango_font_get_hb_font (PANGO_FONT (font)))); + blob_data = hb_blob_get_data (blob, &blob_length); + hb_blob_destroy (blob); + + if ((error = FT_New_Memory_Face (ft_library, + (const FT_Byte *) blob_data, + blob_length, + hb_face_get_index (font->face->face), + &ft_face)) != 0) + g_error ("FT_New_Memory_Face failed: %d %s", error, FT_Error_String (error)); + + hb_font = pango_font_get_hb_font (PANGO_FONT (font)); + coords = hb_font_get_var_coords_normalized (hb_font, &num_coords); + if (num_coords > 0) + { + FT_Fixed *ft_coords = (FT_Fixed *) g_alloca (num_coords * sizeof (FT_Fixed)); + + for (unsigned int i = 0; i < num_coords; i++) + ft_coords[i] = coords[i] << 2; + + FT_Set_Var_Blend_Coordinates (ft_face, num_coords, ft_coords); + } + + cairo_face = cairo_ft_font_face_create_for_ft_face (ft_face, FT_LOAD_NO_HINTING | FT_LOAD_COLOR); + if (font->face->embolden) + cairo_ft_font_face_set_synthesize (cairo_face, CAIRO_FT_SYNTHESIZE_BOLD); + cairo_font_face_set_user_data (cairo_face, &key, + ft_face, (cairo_destroy_func_t) FT_Done_Face); + + return cairo_face; +} + cairo_scaled_font_t * _pango_cairo_font_private_get_scaled_font (PangoCairoFontPrivate *cf_priv) { @@ -76,7 +142,11 @@ _pango_cairo_font_private_get_scaled_font (PangoCairoFontPrivate *cf_priv) return NULL; } - font_face = (* PANGO_CAIRO_FONT_GET_IFACE (cf_priv->cfont)->create_font_face) (cf_priv->cfont); + if (PANGO_IS_CAIRO_FONT (cf_priv->cfont)) + font_face = (* PANGO_CAIRO_FONT_GET_IFACE (cf_priv->cfont)->create_font_face) (cf_priv->cfont); + else + font_face = create_font_face_for_hb_font (PANGO_HB_FONT (cf_priv->cfont)); + if (G_UNLIKELY (font_face == NULL)) goto done; @@ -161,6 +231,19 @@ pango_cairo_font_get_scaled_font (PangoCairoFont *cfont) return _pango_cairo_font_private_get_scaled_font (cf_priv); } +cairo_scaled_font_t * +_pango_font_get_scaled_font (PangoFont *font) +{ + PangoCairoFontPrivate *cf_priv; + + cf_priv = _pango_font_get_cairo_font_private (font); + + if (G_UNLIKELY (!cf_priv)) + return NULL; + + return _pango_cairo_font_private_get_scaled_font (cf_priv); +} + /** * _pango_cairo_font_install: * @font: a `PangoCairoFont` @@ -175,7 +258,9 @@ gboolean _pango_cairo_font_install (PangoFont *font, cairo_t *cr) { - cairo_scaled_font_t *scaled_font = pango_cairo_font_get_scaled_font ((PangoCairoFont *)font); + cairo_scaled_font_t *scaled_font; + + scaled_font = _pango_font_get_scaled_font (font); if (G_UNLIKELY (scaled_font == NULL || cairo_scaled_font_status (scaled_font) != CAIRO_STATUS_SUCCESS)) return FALSE; @@ -506,8 +591,7 @@ _pango_cairo_font_private_get_hex_box_info (PangoCairoFontPrivate *cf_priv) pango_font_description_free (desc); cairo_font_options_destroy (font_options); - - scaled_mini_font = pango_cairo_font_get_scaled_font ((PangoCairoFont *) mini_font); + scaled_mini_font = _pango_font_get_scaled_font (mini_font); if (G_UNLIKELY (scaled_mini_font == NULL || cairo_scaled_font_status (scaled_mini_font) != CAIRO_STATUS_SUCCESS)) return NULL; @@ -532,7 +616,7 @@ _pango_cairo_font_private_get_hex_box_info (PangoCairoFontPrivate *cf_priv) pad = MIN (pad, mini_size); hbi = g_slice_new (PangoCairoFontHexBoxInfo); - hbi->font = (PangoCairoFont *) mini_font; + hbi->font = mini_font; hbi->rows = rows; hbi->digit_width = width; @@ -585,10 +669,71 @@ _pango_cairo_font_hex_box_info_destroy (PangoCairoFontHexBoxInfo *hbi) } } +static void +free_cairo_font_private (gpointer data) +{ + PangoCairoFontPrivate *cf_priv = data; + _pango_cairo_font_private_finalize (cf_priv); + g_free (data); +} + +PangoCairoFontPrivate * +_pango_font_get_cairo_font_private (PangoFont *font) +{ + PangoCairoFontPrivate *cf_priv; + + if (PANGO_IS_CAIRO_FONT (font)) + return PANGO_CAIRO_FONT_PRIVATE (font); + + cf_priv = g_object_get_data (G_OBJECT (font), "pango-hb-font-cairo_private"); + if (!cf_priv) + { + PangoHbFont *hbfont = PANGO_HB_FONT (font); + cairo_font_options_t *font_options; + cairo_matrix_t font_matrix; + int size; + + if (hbfont->face->matrix) + cairo_matrix_init (&font_matrix, + hbfont->face->matrix->xx, + - hbfont->face->matrix->yx, + - hbfont->face->matrix->xy, + hbfont->face->matrix->yy, + 0., 0.); + else + cairo_matrix_init (&font_matrix, 1., 0., 0., 1., 0., 0.); + + size = hbfont->size * hbfont->dpi / 72.; + + cairo_matrix_scale (&font_matrix, + hbfont->face->x_scale * size / (double)PANGO_SCALE, + hbfont->face->y_scale * size / (double)PANGO_SCALE); + + 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); + + cf_priv = g_new0 (PangoCairoFontPrivate, 1); + _pango_cairo_font_private_initialize (cf_priv, + (PangoCairoFont *)font, + hbfont->gravity, + font_options, + &hbfont->matrix, + &font_matrix); + + cairo_font_options_destroy (font_options); + + g_object_set_data_full (G_OBJECT (font), "pango-hb-font-cairo_private", + cf_priv, free_cairo_font_private); + } + + return cf_priv; +} + PangoCairoFontHexBoxInfo * -_pango_cairo_font_get_hex_box_info (PangoCairoFont *cfont) +_pango_cairo_font_get_hex_box_info (PangoFont *font) { - PangoCairoFontPrivate *cf_priv = PANGO_CAIRO_FONT_PRIVATE (cfont); + PangoCairoFontPrivate *cf_priv = _pango_font_get_cairo_font_private (font); return _pango_cairo_font_private_get_hex_box_info (cf_priv); } @@ -604,7 +749,7 @@ _pango_cairo_font_private_initialize (PangoCairoFontPrivate *cf_priv, cairo_matrix_t gravity_matrix; cf_priv->cfont = cfont; - cf_priv->gravity = gravity; + cf_priv->gravity = gravity != PANGO_GRAVITY_AUTO ? gravity : PANGO_GRAVITY_SOUTH; cf_priv->data = _pango_cairo_font_private_scaled_font_data_create (); |