[pango/pango2: 79/168] Make font metrics copy/free
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [pango/pango2: 79/168] Make font metrics copy/free
- Date: Mon, 20 Jun 2022 16:28:42 +0000 (UTC)
commit b165dbef61e1508b91f26565219c3e9d5c8dc524
Author: Matthias Clasen <mclasen redhat com>
Date: Sat Jun 11 17:53:10 2022 -0400
Make font metrics copy/free
Having this struct ref/unref was a bit of an odd
fit, and we were not taking advantage of it anywhere.
pango/pango-context.c | 35 ++++++++++++++---------------------
pango/pango-font-metrics.c | 35 ++++++++++-------------------------
pango/pango-font-metrics.h | 6 +++---
pango/pango-font.c | 2 +-
pango/pango-fontset.c | 22 ++++++----------------
pango/pango-line-breaker.c | 2 +-
pango/pango-line.c | 2 +-
pango/pango-renderer.c | 2 +-
pango/pango-run.c | 2 +-
tests/test-font.c | 4 ++--
utils/pango-list.c | 2 +-
11 files changed, 41 insertions(+), 73 deletions(-)
---
diff --git a/pango/pango-context.c b/pango/pango-context.c
index 90d48aef..34b19469 100644
--- a/pango/pango-context.c
+++ b/pango/pango-context.c
@@ -126,7 +126,7 @@ pango_context_finalize (GObject *object)
pango_matrix_free (context->matrix);
if (context->metrics)
- pango_font_metrics_unref (context->metrics);
+ pango_font_metrics_free (context->metrics);
G_OBJECT_CLASS (pango_context_parent_class)->finalize (object);
}
@@ -554,31 +554,21 @@ get_first_metrics_foreach (PangoFontset *fontset,
PangoFont *font,
gpointer data)
{
- PangoFontMetrics *fontset_metrics = data;
+ PangoFontMetrics **fontset_metrics = data;
PangoLanguage *language = pango_fontset_get_language (fontset);
- PangoFontMetrics *font_metrics = pango_font_get_metrics (font, language);
- guint save_ref_count;
- /* Initialize the fontset metrics to metrics of the first font in the
- * fontset; saving the refcount and restoring it is a bit of hack but avoids
- * having to update this code for each metrics addition.
- */
- save_ref_count = fontset_metrics->ref_count;
- *fontset_metrics = *font_metrics;
- fontset_metrics->ref_count = save_ref_count;
+ *fontset_metrics = pango_font_get_metrics (font, language);
- pango_font_metrics_unref (font_metrics);
-
- return TRUE; /* Stops iteration */
+ return TRUE; /* Stops iteration */
}
static PangoFontMetrics *
get_base_metrics (PangoFontset *fontset)
{
- PangoFontMetrics *metrics = pango_font_metrics_new ();
+ PangoFontMetrics *metrics = NULL;
/* Initialize the metrics from the first font in the fontset */
- pango_fontset_foreach (fontset, get_first_metrics_foreach, metrics);
+ pango_fontset_foreach (fontset, get_first_metrics_foreach, &metrics);
return metrics;
}
@@ -615,7 +605,7 @@ update_metrics_from_items (PangoFontMetrics *metrics,
metrics->ascent = MAX (metrics->ascent, raw_metrics->ascent);
metrics->descent = MAX (metrics->descent, raw_metrics->descent);
metrics->height = MAX (metrics->height, raw_metrics->height);
- pango_font_metrics_unref (raw_metrics);
+ pango_font_metrics_free (raw_metrics);
}
pango_shape (text + item->offset, item->length,
@@ -658,7 +648,7 @@ update_metrics_from_items (PangoFontMetrics *metrics,
* for the individual families.
*
* Return value: a `PangoFontMetrics` object. The caller must call
- * [method@Pango.FontMetrics.unref] when finished using the object.
+ * [method Pango FontMetrics free] when finished using the object.
*/
PangoFontMetrics *
pango_context_get_metrics (PangoContext *context,
@@ -682,7 +672,7 @@ pango_context_get_metrics (PangoContext *context,
if (desc == context->font_desc &&
language == context->language &&
context->metrics != NULL)
- return pango_font_metrics_ref (context->metrics);
+ return pango_font_metrics_copy (context->metrics);
current_fonts = pango_font_map_load_fontset (context->font_map, context, desc, language);
metrics = get_base_metrics (current_fonts);
@@ -703,7 +693,10 @@ pango_context_get_metrics (PangoContext *context,
if (desc == context->font_desc &&
language == context->language)
- context->metrics = pango_font_metrics_ref (metrics);
+ {
+ pango_font_metrics_free (context->metrics);
+ context->metrics = pango_font_metrics_copy (metrics);
+ }
return metrics;
}
@@ -715,7 +708,7 @@ context_changed (PangoContext *context)
if (context->serial == 0)
context->serial++;
- g_clear_pointer (&context->metrics, pango_font_metrics_unref);
+ g_clear_pointer (&context->metrics, pango_font_metrics_free);
}
/**
diff --git a/pango/pango-font-metrics.c b/pango/pango-font-metrics.c
index f5c22129..21a7c735 100644
--- a/pango/pango-font-metrics.c
+++ b/pango/pango-font-metrics.c
@@ -25,8 +25,8 @@
G_DEFINE_BOXED_TYPE (PangoFontMetrics, pango_font_metrics,
- pango_font_metrics_ref,
- pango_font_metrics_unref);
+ pango_font_metrics_copy,
+ pango_font_metrics_free);
/**
* pango_font_metrics_new:
@@ -37,54 +37,39 @@ G_DEFINE_BOXED_TYPE (PangoFontMetrics, pango_font_metrics,
* no public way to set the fields of the structure.
*
* Return value: a newly-created `PangoFontMetrics` structure
- * with a reference count of 1.
*/
PangoFontMetrics *
pango_font_metrics_new (void)
{
PangoFontMetrics *metrics = g_slice_new0 (PangoFontMetrics);
- metrics->ref_count = 1;
return metrics;
}
/**
- * pango_font_metrics_ref:
+ * pango_font_metrics_copy:
* @metrics: (nullable): a `PangoFontMetrics` structure, may be %NULL
*
- * Increase the reference count of a font metrics structure by one.
+ * Create a copy of @metrics.
*
* Return value: (nullable): @metrics
*/
PangoFontMetrics *
-pango_font_metrics_ref (PangoFontMetrics *metrics)
+pango_font_metrics_copy (PangoFontMetrics *metrics)
{
- if (metrics == NULL)
- return NULL;
-
- g_atomic_int_inc ((int *) &metrics->ref_count);
-
- return metrics;
+ return g_slice_dup (PangoFontMetrics, metrics);
}
/**
- * pango_font_metrics_unref:
+ * pango_font_metrics_free:
* @metrics: (nullable): a `PangoFontMetrics` structure, may be %NULL
*
- * Decrease the reference count of a font metrics structure by one.
- *
- * If the result is zero, frees the structure and any associated memory.
+ * Free the @metrics.
*/
void
-pango_font_metrics_unref (PangoFontMetrics *metrics)
+pango_font_metrics_free (PangoFontMetrics *metrics)
{
- if (metrics == NULL)
- return;
-
- g_return_if_fail (metrics->ref_count > 0 );
-
- if (g_atomic_int_dec_and_test ((int *) &metrics->ref_count))
- g_slice_free (PangoFontMetrics, metrics);
+ g_slice_free (PangoFontMetrics, metrics);
}
/**
diff --git a/pango/pango-font-metrics.h b/pango/pango-font-metrics.h
index d046f2d1..ff919e02 100644
--- a/pango/pango-font-metrics.h
+++ b/pango/pango-font-metrics.h
@@ -51,9 +51,9 @@ typedef struct _PangoFontMetrics PangoFontMetrics;
PANGO_AVAILABLE_IN_ALL
GType pango_font_metrics_get_type (void) G_GNUC_CONST;
PANGO_AVAILABLE_IN_ALL
-PangoFontMetrics *pango_font_metrics_ref (PangoFontMetrics *metrics);
+PangoFontMetrics *pango_font_metrics_copy (PangoFontMetrics *metrics);
PANGO_AVAILABLE_IN_ALL
-void pango_font_metrics_unref (PangoFontMetrics *metrics);
+void pango_font_metrics_free (PangoFontMetrics *metrics);
PANGO_AVAILABLE_IN_ALL
int pango_font_metrics_get_ascent (PangoFontMetrics *metrics) G_GNUC_PURE;
PANGO_AVAILABLE_IN_ALL
@@ -73,6 +73,6 @@ int pango_font_metrics_get_strikethrough_position (PangoFontMetri
PANGO_AVAILABLE_IN_ALL
int pango_font_metrics_get_strikethrough_thickness (PangoFontMetrics *metrics) G_GNUC_PURE;
-G_DEFINE_AUTOPTR_CLEANUP_FUNC(PangoFontMetrics, pango_font_metrics_unref)
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(PangoFontMetrics, pango_font_metrics_free)
G_END_DECLS
diff --git a/pango/pango-font.c b/pango/pango-font.c
index 95f8a3ae..24d6add4 100644
--- a/pango/pango-font.c
+++ b/pango/pango-font.c
@@ -294,7 +294,7 @@ pango_font_get_glyph_extents (PangoFont *font,
* output variables and returns.
*
* Return value: a `PangoFontMetrics` object. The caller must call
- * [method@Pango.FontMetrics.unref] when finished using the object.
+ * [method Pango FontMetrics free] when finished using the object.
*/
PangoFontMetrics *
pango_font_get_metrics (PangoFont *font,
diff --git a/pango/pango-fontset.c b/pango/pango-fontset.c
index fd5af91d..d528ad8d 100644
--- a/pango/pango-fontset.c
+++ b/pango/pango-fontset.c
@@ -135,22 +135,12 @@ get_first_metrics_foreach (PangoFontset *fontset,
PangoFont *font,
gpointer data)
{
- PangoFontMetrics *fontset_metrics = data;
+ PangoFontMetrics **fontset_metrics = data;
PangoLanguage *language = pango_fontset_get_language (fontset);
- PangoFontMetrics *font_metrics = pango_font_get_metrics (font, language);
- guint save_ref_count;
- /* Initialize the fontset metrics to metrics of the first font in the
- * fontset; saving the refcount and restoring it is a bit of hack but avoids
- * having to update this code for each metrics addition.
- */
- save_ref_count = fontset_metrics->ref_count;
- *fontset_metrics = *font_metrics;
- fontset_metrics->ref_count = save_ref_count;
+ *fontset_metrics = pango_font_get_metrics (font, language);
- pango_font_metrics_unref (font_metrics);
-
- return TRUE; /* Stops iteration */
+ return TRUE; /* Stops iteration */
}
static PangoFontMetrics *
@@ -168,11 +158,11 @@ pango_fontset_real_get_metrics (PangoFontset *fontset)
sample_str = pango_language_get_sample_string (language);
count = 0;
- metrics = pango_font_metrics_new ();
+ metrics = NULL;
fonts_seen = g_hash_table_new_full (NULL, NULL, g_object_unref, NULL);
/* Initialize the metrics from the first font in the fontset */
- pango_fontset_foreach (fontset, get_first_metrics_foreach, metrics);
+ pango_fontset_foreach (fontset, get_first_metrics_foreach, &metrics);
p = sample_str;
while (*p)
@@ -201,7 +191,7 @@ pango_fontset_real_get_metrics (PangoFontset *fontset)
metrics->approximate_digit_width += raw_metrics->approximate_digit_width;
}
count++;
- pango_font_metrics_unref (raw_metrics);
+ pango_font_metrics_free (raw_metrics);
}
else
g_object_unref (font);
diff --git a/pango/pango-line-breaker.c b/pango/pango-line-breaker.c
index b9db0125..ccec0ffe 100644
--- a/pango/pango-line-breaker.c
+++ b/pango/pango-line-breaker.c
@@ -1324,7 +1324,7 @@ process_item (PangoLineBreaker *self,
*/
metrics = pango_font_get_metrics (item->analysis.font, item->analysis.language);
safe_distance = pango_font_metrics_get_approximate_char_width (metrics) * 3;
- pango_font_metrics_unref (metrics);
+ pango_font_metrics_free (metrics);
if (processing_new_item)
{
diff --git a/pango/pango-line.c b/pango/pango-line.c
index f9382ea5..775a25ba 100644
--- a/pango/pango-line.c
+++ b/pango/pango-line.c
@@ -511,7 +511,7 @@ pango_line_get_empty_extents (PangoLine *line,
logical_rect->height += (leading - leading / 2);
}
- pango_font_metrics_unref (metrics);
+ pango_font_metrics_free (metrics);
}
g_object_unref (font);
diff --git a/pango/pango-renderer.c b/pango/pango-renderer.c
index f3318b96..4ef9b873 100644
--- a/pango/pango-renderer.c
+++ b/pango/pango-renderer.c
@@ -679,7 +679,7 @@ pango_renderer_draw_runs (PangoRenderer *renderer,
x + x_off, y - y_off,
ink, logical, glyphs->num_glyphs);
- pango_font_metrics_unref (metrics);
+ pango_font_metrics_free (metrics);
}
if (renderer->underline == PANGO_LINE_STYLE_NONE &&
diff --git a/pango/pango-run.c b/pango/pango-run.c
index 5f04be8a..17cb237e 100644
--- a/pango/pango-run.c
+++ b/pango/pango-run.c
@@ -200,5 +200,5 @@ pango_run_get_extents (PangoRun *run,
}
if (metrics)
- pango_font_metrics_unref (metrics);
+ pango_font_metrics_free (metrics);
}
diff --git a/tests/test-font.c b/tests/test-font.c
index 72809f57..956c9580 100644
--- a/tests/test-font.c
+++ b/tests/test-font.c
@@ -185,7 +185,7 @@ test_metrics (void)
g_test_message ("\tstrikethrough thickness: %d",
pango_font_metrics_get_strikethrough_thickness (metrics));
- pango_font_metrics_unref (metrics);
+ pango_font_metrics_free (metrics);
g_free (str);
pango_font_description_free (desc);
}
@@ -497,7 +497,7 @@ test_font_metrics (void)
g_assert_cmpint (pango_font_metrics_get_approximate_char_width (metrics), ==, PANGO_SCALE *
PANGO_UNKNOWN_GLYPH_WIDTH);
g_assert_cmpint (pango_font_metrics_get_approximate_digit_width (metrics), ==, PANGO_SCALE *
PANGO_UNKNOWN_GLYPH_WIDTH);
- pango_font_metrics_unref (metrics);
+ pango_font_metrics_free (metrics);
}
static void
diff --git a/utils/pango-list.c b/utils/pango-list.c
index e32cdfc5..9d69a82c 100644
--- a/utils/pango-list.c
+++ b/utils/pango-list.c
@@ -204,7 +204,7 @@ main (int argc,
pango_font_metrics_get_underline_thickness (metrics),
pango_font_metrics_get_strikethrough_position (metrics),
pango_font_metrics_get_strikethrough_thickness (metrics));
- pango_font_metrics_unref (metrics);
+ pango_font_metrics_free (metrics);
}
if (opt_variations)
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