|  | 
|  | LinearGradient (cairo_pattern_t*cobject, bool has_reference=false) | 
|  | Create a C++ wrapper for the C instance.  More... 
 | 
|  | 
| void | get_linear_points (double& x0, double& y0, double& x1, double& y1) const | 
|  | 
| virtual | ~LinearGradient () | 
|  | 
|  | Gradient (cairo_pattern_t*cobject, bool has_reference=false) | 
|  | Create a C++ wrapper for the C instance.  More... 
 | 
|  | 
| virtual | ~Gradient () | 
|  | 
| void | add_color_stop_rgb (double offset, double red, double green, double blue) | 
|  | Adds an opaque color stop to a gradient pattern.  More... 
 | 
|  | 
| void | add_color_stop_rgba (double offset, double red, double green, double blue, double alpha) | 
|  | Adds a translucent color stop to a gradient pattern.  More... 
 | 
|  | 
| std::vector< ColorStop > | get_color_stops () const | 
|  | Gets the color stops and offsets for this Gradient.  More... 
 | 
|  | 
|  | Pattern (cairo_pattern_t*cobject, bool has_reference=false) | 
|  | Create a C++ wrapper for the C instance.  More... 
 | 
|  | 
|  | Pattern (const Pattern&)=delete | 
|  | 
| Pattern& | operator= (const Pattern&)=delete | 
|  | 
| virtual | ~Pattern () | 
|  | 
| void | set_matrix (const Matrix& matrix) | 
|  | Sets the pattern's transformation matrix to .  More... 
 | 
|  | 
| void | get_matrix (Matrix& matrix) const | 
|  | Returns the pattern's transformation matrix.  More... 
 | 
|  | 
| Matrix | get_matrix () const | 
|  | Returns the pattern's transformation matrix.  More... 
 | 
|  | 
| void | set_matrix (const cairo_matrix_t& matrix) | 
|  | 
| void | get_matrix (cairo_matrix_t& matrix) const | 
|  | 
| PatternType | get_type () const | 
|  | Returns the type of the pattern.  More... 
 | 
|  | 
| void | set_extend (Extend extend) | 
|  | Sets the mode to be used for drawing outside the area of a pattern.  More... 
 | 
|  | 
| Extend | get_extend () const | 
|  | Gets the current extend mode See Cairo::Extend for details on the semantics of each extend strategy.  More... 
 | 
|  | 
| cobject* | cobj () | 
|  | 
| const cobject* | cobj () const | 
|  | 
| void | reference () const | 
|  | 
| void | unreference () const | 
|  | 
  
  | 
        
          | static RefPtr<LinearGradient> Cairo::LinearGradient::create | ( | double | x0, |  
          |  |  | double | y0, |  
          |  |  | double | x1, |  
          |  |  | double | y1 |  
          |  | ) |  |  |  | static | 
 
Create a new linear gradient Cairo::Pattern along the line defined by (x0, y0) and (x1, y1). 
Before using the gradient pattern, a number of color stops should be defined using Cairo::Gradient::add_color_stop_rgb() or Cairo::Gradient::add_color_stop_rgba().
Note: The coordinates here are in pattern space. For a new pattern, pattern space is identical to user space, but the relationship between the spaces can be changed with Cairo::Pattern::set_matrix().
- Parameters
- 
  
    | x0 | x coordinate of the start point |  | y0 | y coordinate of the start point |  | x1 | x coordinate of the end point |  | y1 | y coordinate of the end point |