Public Member Functions | |
void | add_color_stop_rgb (double offset, double red, double green, double blue) |
Adds an opaque color stop to a gradient pattern. | |
void | add_color_stop_rgba (double offset, double red, double green, double blue, double alpha) |
Adds a translucent color stop to a gradient pattern. | |
std::vector< ColorStop > | get_color_stops () const |
Gradient (cairo_pattern_t *cobject, bool has_reference=false) | |
Create a C++ wrapper for the C instance. | |
virtual | ~Gradient () |
Protected Member Functions | |
Gradient () |
Cairo::Gradient::Gradient | ( | cairo_pattern_t * | cobject, | |
bool | has_reference = false | |||
) | [explicit] |
Create a C++ wrapper for the C instance.
This C++ instance should then be given to a RefPtr.
cobject | The C instance. | |
has_reference | Whether we already have a reference. Otherwise, the constructor will take an extra reference. |
virtual Cairo::Gradient::~Gradient | ( | ) | [virtual] |
Cairo::Gradient::Gradient | ( | ) | [protected] |
void Cairo::Gradient::add_color_stop_rgb | ( | double | offset, | |
double | red, | |||
double | green, | |||
double | blue | |||
) |
Adds an opaque color stop to a gradient pattern.
The offset specifies the location along the gradient's control vector. For example, a linear gradient's control vector is from (x0,y0) to (x1,y1) while a radial gradient's control vector is from any point on the start circle to the corresponding point on the end circle.
The color is specified in the same way as in Context::set_source_rgb().
offset | an offset in the range [0.0 .. 1.0] | |
red | red component of color | |
green | green component of color | |
blue | blue component of color |
void Cairo::Gradient::add_color_stop_rgba | ( | double | offset, | |
double | red, | |||
double | green, | |||
double | blue, | |||
double | alpha | |||
) |
Adds a translucent color stop to a gradient pattern.
The offset specifies the location along the gradient's control vector. For example, a linear gradient's control vector is from (x0,y0) to (x1,y1) while a radial gradient's control vector is from any point on the start circle to the corresponding point on the end circle.
The color is specified in the same way as in Context::set_source_rgba().
offset | an offset in the range [0.0 .. 1.0] | |
red | red component of color | |
green | green component of color | |
blue | blue component of color | |
alpha | alpha component of color |
std::vector<ColorStop> Cairo::Gradient::get_color_stops | ( | ) | const |