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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-01-19 17:11:55 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-01-22 23:01:51 +0000 |
| commit | ae25f1c360b79f0b7b1bb73e9ebc47eb794d8007 (patch) | |
| tree | 1e8275333922a32bf5f22bdf42a3a44751085adb /src/cairo-misc.c | |
| parent | 9cd9137843f8f1c3d32bedb6510259ab3638a2c5 (diff) | |
| download | cairo-ae25f1c360b79f0b7b1bb73e9ebc47eb794d8007.tar.gz | |
Alter definition of cairo_composite_rectangles_t
This is a more useful definition that is able to individually track the
rectangles that compose the composite operation. This will be used by
the specialist compositors as a means to perform the common extents
determination for an operation.
Diffstat (limited to 'src/cairo-misc.c')
| -rw-r--r-- | src/cairo-misc.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/cairo-misc.c b/src/cairo-misc.c index 5f9cba5f1..cd1032a49 100644 --- a/src/cairo-misc.c +++ b/src/cairo-misc.c @@ -421,6 +421,47 @@ _cairo_operator_bounded_by_source (cairo_operator_t op) return FALSE; } +uint32_t +_cairo_operator_bounded_by_either (cairo_operator_t op) +{ + switch (op) { + default: + ASSERT_NOT_REACHED; + case CAIRO_OPERATOR_OVER: + case CAIRO_OPERATOR_ATOP: + case CAIRO_OPERATOR_DEST: + case CAIRO_OPERATOR_DEST_OVER: + case CAIRO_OPERATOR_DEST_OUT: + case CAIRO_OPERATOR_XOR: + case CAIRO_OPERATOR_ADD: + case CAIRO_OPERATOR_SATURATE: + case CAIRO_OPERATOR_MULTIPLY: + case CAIRO_OPERATOR_SCREEN: + case CAIRO_OPERATOR_OVERLAY: + case CAIRO_OPERATOR_DARKEN: + case CAIRO_OPERATOR_LIGHTEN: + case CAIRO_OPERATOR_COLOR_DODGE: + case CAIRO_OPERATOR_COLOR_BURN: + case CAIRO_OPERATOR_HARD_LIGHT: + case CAIRO_OPERATOR_SOFT_LIGHT: + case CAIRO_OPERATOR_DIFFERENCE: + case CAIRO_OPERATOR_EXCLUSION: + case CAIRO_OPERATOR_HSL_HUE: + case CAIRO_OPERATOR_HSL_SATURATION: + case CAIRO_OPERATOR_HSL_COLOR: + case CAIRO_OPERATOR_HSL_LUMINOSITY: + return CAIRO_OPERATOR_BOUND_BY_MASK | CAIRO_OPERATOR_BOUND_BY_SOURCE; + case CAIRO_OPERATOR_CLEAR: + case CAIRO_OPERATOR_SOURCE: + return CAIRO_OPERATOR_BOUND_BY_MASK; + case CAIRO_OPERATOR_OUT: + case CAIRO_OPERATOR_IN: + case CAIRO_OPERATOR_DEST_IN: + case CAIRO_OPERATOR_DEST_ATOP: + return 0; + } + +} /* This function is identical to the C99 function lround(), except that it * performs arithmetic rounding (floor(d + .5) instead of away-from-zero rounding) and |