Add m-esr52 at 52.6.0

1 files changed, 145 insertions, 0 deletions

diff --git a/gfx/cairo/win32-gdi-font-cache-no-HFONT.patch b/gfx/cairo/win32-gdi-font-cache-no-HFONT.patch
new file mode 100644
index 000000000..fe93095ae
--- /dev/null
+++ b/gfx/cairo/win32-gdi-font-cache-no-HFONT.patch
@@ -0,0 +1,145 @@
+# HG changeset patch
+# User Robert O'Callahan <robert@ocallahan.org>
+# Date 1357107533 -46800
+# Node ID ed54dfdd2facb11a4d4158138b460a31de45e9f7
+# Parent ab6457cc16ec14ea07386dcfc57cad6b8a9ac55d
+Bug 717178. Part 3 alternative: don't put Win32 cairo_font_face_ts into the font-face cache if they were created with an explicit HFONT. r=jrmuizel
+
+diff --git a/gfx/cairo/cairo/src/cairo-win32-font.c b/gfx/cairo/cairo/src/cairo-win32-font.c
+--- a/gfx/cairo/cairo/src/cairo-win32-font.c
++++ b/gfx/cairo/cairo/src/cairo-win32-font.c
+@@ -1941,16 +1942,21 @@ const cairo_font_face_backend_t _cairo_w
+  * The primary purpose of this mapping is to provide unique
+  * #cairo_font_face_t values so that our cache and mapping from
+  * #cairo_font_face_t => #cairo_scaled_font_t works. Once the
+  * corresponding #cairo_font_face_t objects fall out of downstream
+  * caches, we don't need them in this hash table anymore.
+  *
+  * Modifications to this hash table are protected by
+  * _cairo_win32_font_face_mutex.
++ *
++ * Only #cairo_font_face_t values with null 'hfont' (no
++ * HFONT preallocated by caller) are stored in this table. We rely
++ * on callers to manage the lifetime of the HFONT, and they can't
++ * do that if we share #cairo_font_face_t values with other callers.
+  */
+ 
+ static cairo_hash_table_t *cairo_win32_font_face_hash_table = NULL;
+ 
+ static int
+ _cairo_win32_font_face_keys_equal (const void *key_a,
+ 				   const void *key_b);
+ 
+@@ -2036,22 +2042,24 @@ static int
+ }
+ 
+ static void
+ _cairo_win32_font_face_destroy (void *abstract_face)
+ {
+     cairo_hash_table_t *hash_table;
+     cairo_win32_font_face_t *font_face = abstract_face;
+ 
+-    hash_table = _cairo_win32_font_face_hash_table_lock ();
+-    if (unlikely (hash_table == NULL)) {
+-        return;
++    if (!font_face->hfont) {
++        hash_table = _cairo_win32_font_face_hash_table_lock ();
++        if (unlikely (hash_table == NULL)) {
++            return;
++        }
++        _cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
++        _cairo_win32_font_face_hash_table_unlock ();
+     }
+-    _cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
+-    _cairo_win32_font_face_hash_table_unlock ();
+ }
+ 
+ /**
+  * cairo_win32_font_face_create_for_logfontw_hfont:
+  * @logfont: A #LOGFONTW structure specifying the font to use.
+  *   If @font is %NULL then the lfHeight, lfWidth, lfOrientation and lfEscapement
+  *   fields of this structure are ignored. Otherwise lfWidth, lfOrientation and
+  *   lfEscapement must be zero.
+@@ -2070,55 +2078,63 @@ static void
+  **/
+ cairo_font_face_t *
+ cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font)
+ {
+     cairo_win32_font_face_t *font_face, key;
+     cairo_hash_table_t *hash_table;
+     cairo_status_t status;
+ 
+-    hash_table = _cairo_win32_font_face_hash_table_lock ();
+-    if (unlikely (hash_table == NULL)) {
+-        _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+-	return (cairo_font_face_t *)&_cairo_font_face_nil;
+-    }
++    if (!font) {
++        hash_table = _cairo_win32_font_face_hash_table_lock ();
++        if (unlikely (hash_table == NULL)) {
++            _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
++	    return (cairo_font_face_t *)&_cairo_font_face_nil;
++        }
+ 
+-    _cairo_win32_font_face_init_key (&key, logfont, font);
++        _cairo_win32_font_face_init_key (&key, logfont, font);
+ 
+-    /* Return existing unscaled font if it exists in the hash table. */
+-    font_face = _cairo_hash_table_lookup (hash_table,
+-					 &key.base.hash_entry);
+-    if (font_face != NULL) {
+-	cairo_font_face_reference (&font_face->base);
+-	goto DONE;
++        /* Return existing unscaled font if it exists in the hash table. */
++        font_face = _cairo_hash_table_lookup (hash_table,
++                                              &key.base.hash_entry);
++        if (font_face != NULL) {
++	    cairo_font_face_reference (&font_face->base);
++	    goto DONE;
++        }
+     }
+ 
+     /* Otherwise create it and insert into hash table. */
+     font_face = malloc (sizeof (cairo_win32_font_face_t));
+     if (!font_face) {
+         _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
+ 	goto FAIL;
+     }
+ 
+     _cairo_win32_font_face_init_key (font_face, logfont, font);
+     _cairo_font_face_init (&font_face->base, &_cairo_win32_font_face_backend);
++    assert (font_face->base.hash_entry.hash == key.base.hash_entry.hash);
+ 
+-    assert (font_face->base.hash_entry.hash == key.base.hash_entry.hash);
+-    status = _cairo_hash_table_insert (hash_table,
+-				       &font_face->base.hash_entry);
+-    if (unlikely (status))
+-	goto FAIL;
++    if (!font) {
++        status = _cairo_hash_table_insert (hash_table,
++                                           &font_face->base.hash_entry);
++        if (unlikely (status))
++	    goto FAIL;
++    }
+ 
+ DONE:
+-    _cairo_win32_font_face_hash_table_unlock ();
++    if (!font) {
++        _cairo_win32_font_face_hash_table_unlock ();
++    }
+ 
+     return &font_face->base;
+ 
+ FAIL:
+-    _cairo_win32_font_face_hash_table_unlock ();
++    if (!font) {
++        _cairo_win32_font_face_hash_table_unlock ();
++    }
+ 
+     return (cairo_font_face_t *)&_cairo_font_face_nil;
+ }
+ 
+ /**
+  * cairo_win32_font_face_create_for_logfontw:
+  * @logfont: A #LOGFONTW structure specifying the font to use.
+  *   The lfHeight, lfWidth, lfOrientation and lfEscapement