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- Remove individual superseded licensing terms.
- Remove patches, outdated readmes & incomplete patch summaries.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, 85 deletions

diff --git a/gfx/cairo/win32-ExtCreatePen-zero-size.patch b/gfx/cairo/win32-ExtCreatePen-zero-size.patch
deleted file mode 100644
index 3970015f7..000000000
--- a/gfx/cairo/win32-ExtCreatePen-zero-size.patch
+++ /dev/null
@@ -1,85 +0,0 @@
-From: Robert O'Callahan <robert@ocallahan.org>
-Bug 768348. Avoid ExtCreatePen failures by avoiding rounding widths and dash lengths down to zero. r=jrmuizel
-
-diff --git a/gfx/cairo/cairo/src/cairo-win32-printing-surface.c b/gfx/cairo/cairo/src/cairo-win32-printing-surface.c
---- a/gfx/cairo/cairo/src/cairo-win32-printing-surface.c
-+++ b/gfx/cairo/cairo/src/cairo-win32-printing-surface.c
-@@ -1251,22 +1251,24 @@ static cairo_int_status_t
- {
-     cairo_win32_surface_t *surface = abstract_surface;
-     cairo_int_status_t status;
-     HPEN pen;
-     LOGBRUSH brush;
-     COLORREF color;
-     XFORM xform;
-     DWORD pen_style;
-+    DWORD pen_width;
-     DWORD *dash_array;
-     HGDIOBJ obj;
-     unsigned int i;
-     cairo_solid_pattern_t clear;
-     cairo_matrix_t mat;
-     double scale;
-+    double scaled_width;
- 
-     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
-     if (status)
- 	return status;
- 
-     if (op == CAIRO_OPERATOR_CLEAR) {
- 	_cairo_win32_printing_surface_init_clear_color (surface, &clear);
- 	source = (cairo_pattern_t*) &clear;
-@@ -1288,17 +1290,21 @@ static cairo_int_status_t
-     _cairo_matrix_factor_out_scale (&mat, &scale);
- 
-     pen_style = PS_GEOMETRIC;
-     dash_array = NULL;
-     if (style->num_dashes) {
- 	pen_style |= PS_USERSTYLE;
- 	dash_array = calloc (sizeof (DWORD), style->num_dashes);
- 	for (i = 0; i < style->num_dashes; i++) {
--	    dash_array[i] = (DWORD) (scale * style->dash[i]);
-+	    DWORD dashes = (DWORD) (scale * style->dash[i]);
-+	    /* zero dash-lengths cause ExtCreatePen to fail. Make the dashes
-+	     * longer if necessary.
-+	     */
-+	    dash_array[i] = MAX(1, dashes);
- 	}
-     } else {
- 	pen_style |= PS_SOLID;
-     }
- 
-     SetMiterLimit (surface->dc, (FLOAT) (style->miter_limit), NULL);
-     if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
- 	cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;
-@@ -1310,18 +1316,29 @@ static cairo_int_status_t
- 	/* Color not used as the pen will only be used by WidenPath() */
- 	color = RGB (0,0,0);
-     }
-     brush.lbStyle = BS_SOLID;
-     brush.lbColor = color;
-     brush.lbHatch = 0;
-     pen_style |= _cairo_win32_line_cap (style->line_cap);
-     pen_style |= _cairo_win32_line_join (style->line_join);
-+    scaled_width = scale * style->line_width;
-+    if (scaled_width == 0.0)
-+        return status;
-+    pen_width = (DWORD)scaled_width;
-+    if (pen_width == 0) {
-+        /* ExtCreatePen will fail if passed zero width. We have to choose
-+         * between drawing something too wide, or drawing nothing at all.
-+         * Let's draw something.
-+         */
-+        pen_width = 1;
-+    }
-     pen = ExtCreatePen(pen_style,
--		       scale * style->line_width,
-+		       pen_width,
- 		       &brush,
- 		       style->num_dashes,
- 		       dash_array);
-     if (pen == NULL)
- 	return _cairo_win32_print_gdi_error ("_win32_surface_stroke:ExtCreatePen");
-     obj = SelectObject (surface->dc, pen);
-     if (obj == NULL)
- 	return _cairo_win32_print_gdi_error ("_win32_surface_stroke:SelectObject");