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- Remove individual superseded licensing terms.
- Remove patches, outdated readmes & incomplete patch summaries.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, 44 deletions

diff --git a/gfx/cairo/dwrite-glyph-extents.patch b/gfx/cairo/dwrite-glyph-extents.patch
deleted file mode 100644
index d3625e198..000000000
--- a/gfx/cairo/dwrite-glyph-extents.patch
+++ /dev/null
@@ -1,44 +0,0 @@
-diff --git a/gfx/cairo/cairo/src/cairo-dwrite-font.cpp b/gfx/cairo/cairo/src/cairo-dwrite-font.cpp
---- a/gfx/cairo/cairo/src/cairo-dwrite-font.cpp
-+++ b/gfx/cairo/cairo/src/cairo-dwrite-font.cpp
-@@ -582,22 +582,37 @@ _cairo_dwrite_scaled_font_init_glyph_met
-     DWRITE_FONT_METRICS fontMetrics;
-     font_face->dwriteface->GetMetrics(&fontMetrics);
-     HRESULT hr = font_face->dwriteface->GetDesignGlyphMetrics(&charIndex, 1, &metrics);
-     if (FAILED(hr)) {
- 	return CAIRO_INT_STATUS_UNSUPPORTED;
-     }
- 
-     // TODO: Treat swap_xy.
--    extents.width = (FLOAT)(metrics.advanceWidth - metrics.leftSideBearing - metrics.rightSideBearing) / fontMetrics.designUnitsPerEm;
--    extents.height = (FLOAT)(metrics.advanceHeight - metrics.topSideBearing - metrics.bottomSideBearing) / fontMetrics.designUnitsPerEm;
-+    extents.width = (FLOAT)(metrics.advanceWidth - metrics.leftSideBearing - metrics.rightSideBearing) /
-+        fontMetrics.designUnitsPerEm;
-+    extents.height = (FLOAT)(metrics.advanceHeight - metrics.topSideBearing - metrics.bottomSideBearing) /
-+        fontMetrics.designUnitsPerEm;
-     extents.x_advance = (FLOAT)metrics.advanceWidth / fontMetrics.designUnitsPerEm;
-     extents.x_bearing = (FLOAT)metrics.leftSideBearing / fontMetrics.designUnitsPerEm;
-     extents.y_advance = 0.0;
--    extents.y_bearing = (FLOAT)(metrics.topSideBearing - metrics.verticalOriginY) / fontMetrics.designUnitsPerEm;
-+    extents.y_bearing = (FLOAT)(metrics.topSideBearing - metrics.verticalOriginY) /
-+        fontMetrics.designUnitsPerEm;
-+
-+    // We pad the extents here because GetDesignGlyphMetrics returns "ideal" metrics
-+    // for the glyph outline, without accounting for hinting/gridfitting/antialiasing,
-+    // and therefore it does not always cover all pixels that will actually be touched.
-+    if (scaled_font->base.options.antialias != CAIRO_ANTIALIAS_NONE &&
-+        extents.width > 0 && extents.height > 0) {
-+        extents.width += scaled_font->mat_inverse.xx * 2;
-+        extents.x_bearing -= scaled_font->mat_inverse.xx;
-+        extents.height += scaled_font->mat_inverse.yy * 2;
-+        extents.y_bearing -= scaled_font->mat_inverse.yy;
-+    }
-+
-     _cairo_scaled_glyph_set_metrics (scaled_glyph,
- 				     &scaled_font->base,
- 				     &extents);
-     return CAIRO_INT_STATUS_SUCCESS;
- }
- 
- /**
-  * Stack-based helper implementing IDWriteGeometrySink.