Issue #1274 - Part 1: Adopt the cairo version as our own.

- Move header licensing from tri-license to MPL 2.0. MPL-compatible
  other licensing has been retained where originally present.
- Remove individual superseded licensing terms.
- Remove patches, outdated readmes & incomplete patch summaries.
- Remove incomplete cairo release notes (only went up to 1.6.4 anyway).
- Rewrite COPYING to indicate the current state of the library in tree.

1 files changed, 0 insertions, 375 deletions

diff --git a/gfx/cairo/win32-gdi-font-cache.patch b/gfx/cairo/win32-gdi-font-cache.patch
deleted file mode 100644
index e082a2e4d..000000000
--- a/gfx/cairo/win32-gdi-font-cache.patch
+++ /dev/null
@@ -1,375 +0,0 @@
-# HG changeset patch
-# User Andrea Canciani <ranma42@gmail.com>, Adrian Johnson <ajohnson@redneon.com>
-# Date 1354838294 -46800
-# Node ID 390df735b9d5c5ba07a4d3fe9ca2ebc9e7626a78
-# Parent e30a5b6a5a003b85fc1ca8b76719a56ef59d976e
-Bug 717178. Part 2: Import changesets eb29a25d, 6e3e3291 and 101fab7c from upstream.
-======
-
-From 101fab7cd8a90f7cf3d8113c792b3f8c2a9afb7d Mon Sep 17 00:00:00 2001
-From: Andrea Canciani <ranma42@gmail.com>
-Date: Wed, 15 Jun 2011 09:37:36 +0000
-Subject: win32-font: Improve static data reset function
-
-The hashtable is guaranteed to only contain font faces which are
-currently referenced, hence there is no need to remove any font face
-when it is reset (just like for toy-font).
-
-This makes the function simpler and fixes the assertion
-
-Assertion failed: predicate != NULL, file cairo-hash.c, line 373
-
-hit by multiple tests (the first one being "clear").
-
-See https://bugs.freedesktop.org/show_bug.cgi?id=38049
-
-======
-
-From eb29a25dd6dddc511388bf883c9b95843ecdb823 Mon Sep 17 00:00:00 2001
-From: Adrian Johnson <ajohnson@redneon.com>
-Date: Tue, 16 Nov 2010 13:18:39 +0000
-Subject: win32: Use a font_face hash table to provide unique font faces
-
-Similar to the freetype and toy font backends, use a hash table
-to map logfont,hfont to font faces.
-
-This fixes the multiple embedding of the same font in PDF.
-
-https://bugs.freedesktop.org/show_bug.cgi?id=24849
-
-======
-
-From 6e3e329170ab4b96bc0d587c8071e869e228e758 Mon Sep 17 00:00:00 2001
-From: Adrian Johnson <ajohnson@redneon.com>
-Date: Thu, 18 Nov 2010 12:37:45 +0000
-Subject: win32: fix font_face hashing
-
-some bugs were discovered while testing with firefox
-
-======
-
-diff --git a/gfx/cairo/cairo/src/cairo-debug.c b/gfx/cairo/cairo/src/cairo-debug.c
---- a/gfx/cairo/cairo/src/cairo-debug.c
-+++ b/gfx/cairo/cairo/src/cairo-debug.c
-@@ -64,16 +64,20 @@ cairo_debug_reset_static_data (void)
-     _cairo_scaled_font_map_destroy ();
- 
-     _cairo_toy_font_face_reset_static_data ();
- 
- #if CAIRO_HAS_FT_FONT
-     _cairo_ft_font_reset_static_data ();
- #endif
- 
-+#if CAIRO_HAS_WIN32_FONT
-+    _cairo_win32_font_reset_static_data ();
-+#endif
-+
-     _cairo_intern_string_reset_static_data ();
- 
-     _cairo_scaled_font_reset_static_data ();
- 
-     _cairo_pattern_reset_static_data ();
- 
-     _cairo_clip_reset_static_data ();
- 
-diff --git a/gfx/cairo/cairo/src/cairo-mutex-list-private.h b/gfx/cairo/cairo/src/cairo-mutex-list-private.h
---- a/gfx/cairo/cairo/src/cairo-mutex-list-private.h
-+++ b/gfx/cairo/cairo/src/cairo-mutex-list-private.h
-@@ -46,16 +46,20 @@ CAIRO_MUTEX_DECLARE (_cairo_intern_strin
- CAIRO_MUTEX_DECLARE (_cairo_scaled_font_map_mutex)
- CAIRO_MUTEX_DECLARE (_cairo_scaled_glyph_page_cache_mutex)
- CAIRO_MUTEX_DECLARE (_cairo_scaled_font_error_mutex)
- 
- #if CAIRO_HAS_FT_FONT
- CAIRO_MUTEX_DECLARE (_cairo_ft_unscaled_font_map_mutex)
- #endif
- 
-+#if CAIRO_HAS_WIN32_FONT
-+CAIRO_MUTEX_DECLARE (_cairo_win32_font_face_mutex)
-+#endif
-+
- #if CAIRO_HAS_XLIB_SURFACE
- CAIRO_MUTEX_DECLARE (_cairo_xlib_display_mutex)
- #endif
- 
- #if CAIRO_HAS_XCB_SURFACE
- CAIRO_MUTEX_DECLARE (_cairo_xcb_connections_mutex)
- #endif
- 
-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
-@@ -42,16 +42,18 @@
- # define _WIN32_WINNT 0x0500
- #endif
- 
- #include "cairoint.h"
- 
- #include "cairo-win32-private.h"
- #include "cairo-error-private.h"
- 
-+#include <wchar.h>
-+
- #ifndef SPI_GETFONTSMOOTHINGTYPE
- #define SPI_GETFONTSMOOTHINGTYPE 0x200a
- #endif
- #ifndef FE_FONTSMOOTHINGCLEARTYPE
- #define FE_FONTSMOOTHINGCLEARTYPE 2
- #endif
- #ifndef CLEARTYPE_QUALITY
- #define CLEARTYPE_QUALITY 5
-@@ -1887,19 +1889,17 @@ struct _cairo_win32_font_face {
-     cairo_font_face_t base;
-     LOGFONTW logfont;
-     HFONT hfont;
- };
- 
- /* implement the platform-specific interface */
- 
- static void
--_cairo_win32_font_face_destroy (void *abstract_face)
--{
--}
-+_cairo_win32_font_face_destroy (void *abstract_face);
- 
- static cairo_bool_t
- _is_scale (const cairo_matrix_t *matrix, double scale)
- {
-     return matrix->xx == scale && matrix->yy == scale &&
-            matrix->xy == 0. && matrix->yx == 0. &&
-            matrix->x0 == 0. && matrix->y0 == 0.;
- }
-@@ -1932,16 +1932,128 @@ static cairo_status_t
- 
- const cairo_font_face_backend_t _cairo_win32_font_face_backend = {
-     CAIRO_FONT_TYPE_WIN32,
-     _cairo_win32_font_face_create_for_toy,
-     _cairo_win32_font_face_destroy,
-     _cairo_win32_font_face_scaled_font_create
- };
- 
-+/* We maintain a hash table from LOGFONT,HFONT => #cairo_font_face_t.
-+ * 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.
-+ */
-+
-+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);
-+
-+static void
-+_cairo_win32_font_face_hash_table_destroy (void)
-+{
-+    cairo_hash_table_t *hash_table;
-+
-+    /* We manually acquire the lock rather than calling
-+     * _cairo_win32_font_face_hash_table_lock simply to avoid creating
-+     * the table only to destroy it again. */
-+    CAIRO_MUTEX_LOCK (_cairo_win32_font_face_mutex);
-+    hash_table = cairo_win32_font_face_hash_table;
-+    cairo_win32_font_face_hash_table = NULL;
-+    CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
-+
-+    if (hash_table != NULL)
-+	_cairo_hash_table_destroy (hash_table);
-+}
-+
-+static cairo_hash_table_t *
-+_cairo_win32_font_face_hash_table_lock (void)
-+{
-+    CAIRO_MUTEX_LOCK (_cairo_win32_font_face_mutex);
-+
-+    if (unlikely (cairo_win32_font_face_hash_table == NULL))
-+    {
-+	cairo_win32_font_face_hash_table =
-+	_cairo_hash_table_create (_cairo_win32_font_face_keys_equal);
-+
-+	if (unlikely (cairo_win32_font_face_hash_table == NULL)) {
-+	    CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
-+	    _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
-+	    return NULL;
-+	}
-+    }
-+
-+    return cairo_win32_font_face_hash_table;
-+}
-+
-+static void
-+_cairo_win32_font_face_hash_table_unlock (void)
-+{
-+    CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
-+}
-+
-+static void
-+_cairo_win32_font_face_init_key (cairo_win32_font_face_t *key,
-+				 LOGFONTW                *logfont,
-+				 HFONT                    font)
-+{
-+    unsigned long hash = _CAIRO_HASH_INIT_VALUE;
-+
-+    key->logfont = *logfont;
-+    key->hfont = font;
-+
-+    hash = _cairo_hash_bytes (0, logfont->lfFaceName, 2*wcslen(logfont->lfFaceName));
-+    hash = _cairo_hash_bytes (hash, &logfont->lfWeight, sizeof(logfont->lfWeight));
-+    hash = _cairo_hash_bytes (hash, &logfont->lfItalic, sizeof(logfont->lfItalic));
-+
-+    key->base.hash_entry.hash = hash;
-+}
-+
-+static int
-+_cairo_win32_font_face_keys_equal (const void *key_a,
-+				   const void *key_b)
-+{
-+    const cairo_win32_font_face_t *face_a = key_a;
-+    const cairo_win32_font_face_t *face_b = key_b;
-+
-+    if (face_a->logfont.lfWeight         == face_b->logfont.lfWeight &&
-+	face_a->logfont.lfItalic         == face_b->logfont.lfItalic &&
-+	face_a->logfont.lfUnderline      == face_b->logfont.lfUnderline &&
-+	face_a->logfont.lfStrikeOut      == face_b->logfont.lfStrikeOut &&
-+	face_a->logfont.lfCharSet        == face_b->logfont.lfCharSet &&
-+	face_a->logfont.lfOutPrecision   == face_b->logfont.lfOutPrecision &&
-+	face_a->logfont.lfClipPrecision  == face_b->logfont.lfClipPrecision &&
-+	face_a->logfont.lfPitchAndFamily == face_b->logfont.lfPitchAndFamily &&
-+	(wcscmp (face_a->logfont.lfFaceName, face_b->logfont.lfFaceName) == 0))
-+	return TRUE;
-+    else
-+	return FALSE;
-+}
-+
-+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;
-+    }
-+    _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.
-  * @font: An #HFONT that can be used when the font matrix is a scale by
-  *   -lfHeight and the CTM is identity.
-@@ -1954,30 +2066,61 @@ const cairo_font_face_backend_t _cairo_w
-  * and can be used with functions such as cairo_win32_scaled_font_select_font().
-  *
-  * Return value: a newly created #cairo_font_face_t. Free with
-  *  cairo_font_face_destroy() when you are done using it.
-  **/
- cairo_font_face_t *
- cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font)
- {
--    cairo_win32_font_face_t *font_face;
-+    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;
-+    }
-+
-+    _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;
-+    }
-+
-+    /* 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);
--        return (cairo_font_face_t *)&_cairo_font_face_nil;
-+	goto FAIL;
-     }
- 
--    font_face->logfont = *logfont;
--    font_face->hfont = font;
--
-+    _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);
-+    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 ();
-+
-     return &font_face->base;
-+
-+FAIL:
-+    _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
-  *   fields of this structure are ignored.
-  *
-@@ -2176,8 +2319,14 @@ cairo_win32_scaled_font_get_device_to_lo
-     cairo_win32_scaled_font_t *win_font = (cairo_win32_scaled_font_t *)scaled_font;
-     if (! _cairo_scaled_font_is_win32 (scaled_font)) {
- 	_cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
- 	cairo_matrix_init_identity (device_to_logical);
- 	return;
-     }
-     *device_to_logical = win_font->device_to_logical;
- }
-+
-+void
-+_cairo_win32_font_reset_static_data (void)
-+{
-+    _cairo_win32_font_face_hash_table_destroy ();
-+}
-diff --git a/gfx/cairo/cairo/src/cairoint.h b/gfx/cairo/cairo/src/cairoint.h
---- a/gfx/cairo/cairo/src/cairoint.h
-+++ b/gfx/cairo/cairo/src/cairoint.h
-@@ -403,16 +403,19 @@ cairo_private void
- _cairo_reset_static_data (void);
- 
- cairo_private void
- _cairo_toy_font_face_reset_static_data (void);
- 
- cairo_private void
- _cairo_ft_font_reset_static_data (void);
- 
-+cairo_private void
-+_cairo_win32_font_reset_static_data (void);
-+
- /* the font backend interface */
- 
- struct _cairo_unscaled_font_backend {
-     void (*destroy)     	    (void		             *unscaled_font);
- };
- 
- /* #cairo_toy_font_face_t - simple family/slant/weight font faces used for
-  * the built-in font API