cairo_extend_t is used to describe how pattern color/alpha will be
determined for areas "outside" the pattern's natural area, (for
example, outside the surface bounds or outside the gradient
geometry).
Mesh patterns are not affected by the extend mode.
The default extend mode is CAIRO_EXTEND_NONE for surface patterns
and CAIRO_EXTEND_PAD for gradient patterns.
New entries may be added in future versions.
CAIRO_EXTEND_NONE
pixels outside of the source pattern
are fully transparent (Since 1.0)
CAIRO_EXTEND_REPEAT
the pattern is tiled by repeating (Since 1.0)
CAIRO_EXTEND_REFLECT
the pattern is tiled by reflecting
at the edges (Since 1.0; but only implemented for surface patterns since 1.6)
CAIRO_EXTEND_PAD
pixels outside of the pattern copy
the closest pixel from the source (Since 1.2; but only
implemented for surface patterns since 1.6)
Since 1.0
cairo_extend_t is used to describe how pattern color/alpha will be determined for areas "outside" the pattern's natural area, (for example, outside the surface bounds or outside the gradient geometry). Mesh patterns are not affected by the extend mode. The default extend mode is CAIRO_EXTEND_NONE for surface patterns and CAIRO_EXTEND_PAD for gradient patterns. New entries may be added in future versions. CAIRO_EXTEND_NONE pixels outside of the source pattern are fully transparent (Since 1.0) CAIRO_EXTEND_REPEAT the pattern is tiled by repeating (Since 1.0) CAIRO_EXTEND_REFLECT the pattern is tiled by reflecting at the edges (Since 1.0; but only implemented for surface patterns since 1.6) CAIRO_EXTEND_PAD pixels outside of the pattern copy the closest pixel from the source (Since 1.2; but only implemented for surface patterns since 1.6) Since 1.0