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- Remove individual superseded licensing terms.
- Remove patches, outdated readmes & incomplete patch summaries.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, 71 deletions

diff --git a/gfx/cairo/quartz-optimize-OVER.patch b/gfx/cairo/quartz-optimize-OVER.patch
deleted file mode 100644
index 2c587459b..000000000
--- a/gfx/cairo/quartz-optimize-OVER.patch
+++ /dev/null
@@ -1,71 +0,0 @@
-From: Robert O'Callahan <robert@ocallahan.org>
-Bug 579885. Part 4: Paint opaque surfaces using kPrivateCGCompositeCopy when possible. r=jrmuizel,a=blocking
-
-diff --git a/gfx/cairo/cairo/src/cairo-quartz-surface.c b/gfx/cairo/cairo/src/cairo-quartz-surface.c
---- a/gfx/cairo/cairo/src/cairo-quartz-surface.c
-+++ b/gfx/cairo/cairo/src/cairo-quartz-surface.c
-@@ -122,16 +122,17 @@ static void (*CGContextClipToMaskPtr) (C
- static void (*CGContextDrawTiledImagePtr) (CGContextRef, CGRect, CGImageRef) = NULL;
- static unsigned int (*CGContextGetTypePtr) (CGContextRef) = NULL;
- static void (*CGContextSetShouldAntialiasFontsPtr) (CGContextRef, bool) = NULL;
- static bool (*CGContextGetShouldAntialiasFontsPtr) (CGContextRef) = NULL;
- static bool (*CGContextGetShouldSmoothFontsPtr) (CGContextRef) = NULL;
- static void (*CGContextSetAllowsFontSmoothingPtr) (CGContextRef, bool) = NULL;
- static bool (*CGContextGetAllowsFontSmoothingPtr) (CGContextRef) = NULL;
- static void (*CGContextReplacePathWithClipPathPtr) (CGContextRef) = NULL;
-+static CGFloat (*CGContextGetAlphaPtr) (CGContextRef) = NULL;
- 
- static SInt32 _cairo_quartz_osx_version = 0x0;
- 
- static cairo_bool_t _cairo_quartz_symbol_lookup_done = FALSE;
- 
- /*
-  * Utility functions
-  */
-@@ -157,16 +158,17 @@ static void quartz_ensure_symbols(void)
-     CGContextDrawTiledImagePtr = dlsym(RTLD_DEFAULT, "CGContextDrawTiledImage");
-     CGContextGetTypePtr = dlsym(RTLD_DEFAULT, "CGContextGetType");
-     CGContextSetShouldAntialiasFontsPtr = dlsym(RTLD_DEFAULT, "CGContextSetShouldAntialiasFonts");
-     CGContextGetShouldAntialiasFontsPtr = dlsym(RTLD_DEFAULT, "CGContextGetShouldAntialiasFonts");
-     CGContextGetShouldSmoothFontsPtr = dlsym(RTLD_DEFAULT, "CGContextGetShouldSmoothFonts");
-     CGContextReplacePathWithClipPathPtr = dlsym(RTLD_DEFAULT, "CGContextReplacePathWithClipPath");
-     CGContextGetAllowsFontSmoothingPtr = dlsym(RTLD_DEFAULT, "CGContextGetAllowsFontSmoothing");
-     CGContextSetAllowsFontSmoothingPtr = dlsym(RTLD_DEFAULT, "CGContextSetAllowsFontSmoothing");
-+    CGContextGetAlphaPtr = dlsym(RTLD_DEFAULT, "CGContextGetAlpha");
- 
-     if (Gestalt(gestaltSystemVersion, &_cairo_quartz_osx_version) != noErr) {
- 	// assume 10.4
- 	_cairo_quartz_osx_version = 0x1040;
-     }
- 
-     _cairo_quartz_symbol_lookup_done = TRUE;
- }
-@@ -1698,16 +1700,28 @@ _cairo_quartz_setup_state (cairo_quartz_
- 
-     if (source->type == CAIRO_PATTERN_TYPE_RADIAL) {
- 	const cairo_radial_pattern_t *rpat = (const cairo_radial_pattern_t *)source;
- 	_cairo_quartz_setup_radial_source (surface, rpat, extents, &state);
- 	return state;
-     }
- 
-     if (source->type == CAIRO_PATTERN_TYPE_SURFACE) {
-+        if (op == CAIRO_OPERATOR_OVER && _cairo_pattern_is_opaque (source) &&
-+            CGContextGetAlphaPtr &&
-+            CGContextGetAlphaPtr (surface->cgContext) == 1.0) {
-+            // Quartz won't touch pixels outside the bounds of the
-+            // source surface, so we can just go ahead and use Copy here
-+            // to accelerate things.
-+            // Quartz won't necessarily be able to do this optimization internally;
-+            // for CGLayer surfaces, we can know all the pixels are opaque
-+            // (because it's CONTENT_COLOR), but Quartz won't know.
-+            CGContextSetCompositeOperation (context, kPrivateCGCompositeCopy);
-+        }
-+
- 	const cairo_surface_pattern_t *spat = (const cairo_surface_pattern_t *) source;
-         _cairo_quartz_setup_surface_source (surface, spat, extents, &state);
-         return state;
-     }
- 
-     state.action = DO_UNSUPPORTED;
-     return state;
- }