PorterDuff#
Added in version 4.22.
- class PorterDuff#
GSK_PORTER_DUFF_SOURCE: GSK_PORTER_DUFF_DEST: GSK_PORTER_DUFF_SOURCE_OVER_DEST: GSK_PORTER_DUFF_DEST_OVER_SOURCE: GSK_PORTER_DUFF_SOURCE_IN_DEST: GSK_PORTER_DUFF_DEST_IN_SOURCE: GSK_PORTER_DUFF_SOURCE_OUT_DEST: GSK_PORTER_DUFF_DEST_OUT_SOURCE: GSK_PORTER_DUFF_SOURCE_ATOP_DEST: GSK_PORTER_DUFF_DEST_ATOP_SOURCE: GSK_PORTER_DUFF_XOR: GSK_PORTER_DUFF_CLEAR: The 12 compositing modes defined by the seminal paper by Thomas Porter and Tom Duff.
They are used in SVG, PDF and in Cairo with cairo_operator_t.