xtd::drawing::drawing_2d::radial_gradient_brush Class Reference

Inheritance diagram for xtd::drawing::drawing_2d::radial_gradient_brush:

Definition

Encapsulates a xtd::drawing::brush with a radial gradient. This class cannot be inherited.

Namespace

xtd::drawing::drawing_2d

Library

xtd.drawing

Examples

The following code example demonstrates the use of radial_gradient_brush class.

#include <xtd/drawing/drawing_2d/conical_gradient_brush>
#include <xtd/drawing/drawing_2d/hatch_brush>
#include <xtd/drawing/drawing_2d/linear_gradient_brush>
#include <xtd/drawing/drawing_2d/radial_gradient_brush>
#include <xtd/drawing/solid_brush>
#include <xtd/drawing/texture_brush>
#include <xtd/forms/application>
#include <xtd/forms/form>
 
using namespace xtd;
using namespace xtd::drawing;
using namespace xtd::drawing::drawing_2d;
using namespace xtd::forms;
 
namespace fill_rectangle_example {
  class form1 : public form {
  public:
    form1() {
      text("Fill rectangle example");
      client_size({680, 340});
    }
    
  protected:
    void on_paint(paint_event_args& e) override {
      form::on_paint(e);
      
      auto back_color = color::navy;
      auto fore_color = color::white;
      
      e.graphics().fill_rectangle(solid_brush {color::transparent}, rectangle {10, 10, 150, 150});
      e.graphics().draw_rectangle(pen {fore_color, 4}, rectangle {10, 10, 150, 150});
      
      e.graphics().fill_rectangle(solid_brush {back_color}, rectangle {180, 10, 150, 150});
      e.graphics().draw_rectangle(pen {fore_color, 4}, rectangle {180, 10, 150, 150});
      
      e.graphics().fill_rectangle(texture_brush {create_circle_texture(fore_color, back_color)}, rectangle {350, 10, 150, 150});
      e.graphics().draw_rectangle(pen {fore_color, 4}, rectangle {350, 10, 150, 150});
      
      e.graphics().fill_rectangle(hatch_brush {hatch_style::diagonal_brick, color::white, back_color}, rectangle {520, 10, 150, 150});
      e.graphics().draw_rectangle(pen {color::white, 4}, rectangle {520, 10, 150, 150});
      
      e.graphics().fill_rectangle(conical_gradient_brush {point {85, 255}, back_color, fore_color, 0}, rectangle {10, 180, 150, 150});
      e.graphics().draw_rectangle(pen {color::white, 4}, rectangle {10, 180, 150, 150});
      
      e.graphics().fill_rectangle(linear_gradient_brush {rectangle {180, 180, 150, 150}, back_color, fore_color, 315}, rectangle {180, 180, 150, 150});
      e.graphics().draw_rectangle(pen {color::white, 4}, rectangle {180, 180, 150, 150});
      
      e.graphics().fill_rectangle(radial_gradient_brush {point {425, 255}, fore_color, back_color, 73}, rectangle {350, 180, 150, 150});
      e.graphics().draw_rectangle(pen {color::white, 4}, rectangle {350, 180, 150, 150});
    }
    
  private:
    auto create_circle_texture(const color& fore_color, const color& back_color)->image {
      auto texture = bitmap {16, 16};
      auto graphics = texture.create_graphics();
      graphics.fill_ellipse(solid_brush {back_color}, 1, 1, texture.width() - 2, texture.height() - 2);
      graphics.draw_ellipse(pen {fore_color, 2}, 1, 1, texture.width() - 2, texture.height() - 2);
      return texture;
    }
  };
}
 
auto main() -> int {
  application::run(fill_rectangle_example::form1 {});
}

Examples

circular_form.cpp, fill_ellipse.cpp, fill_rectangle.cpp, fill_rounded_rectangle.cpp, form_paint.cpp, and graphics.cpp.

Public Constructors
	radial_gradient_brush ()
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with default values.
	radial_gradient_brush (const xtd::drawing::point &center, const xtd::drawing::color &color1, const xtd::drawing::color &color2)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.
	radial_gradient_brush (const xtd::drawing::point_f &center, const xtd::drawing::color &color1, const xtd::drawing::color &color2)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.
	radial_gradient_brush (const xtd::drawing::point &center, const xtd::drawing::color &color1, const xtd::drawing::color &color2, float radius)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point ,colors and radius.
	radial_gradient_brush (const xtd::drawing::point_f &center, const xtd::drawing::color &color1, const xtd::drawing::color &color2, float radius)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point, colors and radiuus.
	radial_gradient_brush (const xtd::drawing::point &center, const std::vector< xtd::drawing::color > &radial_colors)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.
	radial_gradient_brush (const xtd::drawing::point_f &center, const std::vector< xtd::drawing::color > &radial_colors)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.
	radial_gradient_brush (const xtd::drawing::point &center, const std::vector< xtd::drawing::color > &radial_colors, float radius)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center poin, colors and radius.
	radial_gradient_brush (const xtd::drawing::point_f &center, const std::vector< xtd::drawing::color > &radial_colors, float radius)
	Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point, colors and radius.

Public Properties
xtd::drawing::point_f	center_point () const noexcept
	Gets the center point of the radial gradient.
radial_gradient_brush &	center_point (const xtd::drawing::point_f &value) noexcept
	Gets the center point of the radial gradient.
radial_gradient_brush &	center_point (const xtd::drawing::point &value) noexcept
	Sets the center point of the radial gradient.
xtd::drawing::point_f	focal_point () const noexcept
	Gets the focal point of the radial gradient.
radial_gradient_brush &	focal_point (const xtd::drawing::point_f &value) noexcept
	Sets the focal point of the radial gradient.
radial_gradient_brush &	focal_point (const xtd::drawing::point &value) noexcept
	Sets the focal point of the radial gradient.
const xtd::drawing::drawing_2d::gradient_stop_collection &	radial_colors () const noexcept
	Gets the starting and ending colors of the gradient.
xtd::drawing::drawing_2d::radial_gradient_brush &	radial_colors (const xtd::drawing::drawing_2d::gradient_stop_collection &radial_colors)
	sets the starting and ending colors of the gradient.
float	radius () const noexcept
	Gets the angle of the gradient.
radial_gradient_brush &	radius (float value) noexcept
	Sets the radius of the gradient.

Public Methods
bool	equals (const radial_gradient_brush &value) const noexcept override
bool	equals (const brush &value) const noexcept override
virtual bool	equals (const object &obj) const noexcept
	Determines whether the specified object is equal to the current object.
template<typename object_a_t , typename object_b_t >
static bool	equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are considered equal.

Additional Inherited Members
Public Member Functions inherited from xtd::drawing::brush
intptr	handle () const noexcept
	Gets the handle of the brush.
bool	equals (const brush &value) const noexcept override
xtd::string	to_string () const noexcept override
	Converts this brush object to a human-readable string.
Public Member Functions inherited from xtd::object
	object ()=default
	Create a new instance of the ultimate base class object.
virtual size_t	get_hash_code () const noexcept
	Serves as a hash function for a particular type.
virtual type_object	get_type () const noexcept
	Gets the type of the current instance.
template<typename object_t >
xtd::uptr< object_t >	memberwise_clone () const
	Creates a shallow copy of the current object.
Public Member Functions inherited from xtd::iequatable< brush >
virtual bool	equals (const brush &) const noexcept=0
	Indicates whether the current object is equal to another object of the same type.
Public Member Functions inherited from xtd::iequatable< radial_gradient_brush >
virtual bool	equals (const radial_gradient_brush &) const noexcept=0
	Indicates whether the current object is equal to another object of the same type.
Static Public Member Functions inherited from xtd::drawing::brush
template<typename object_a_t , typename object_b_t >
static bool	equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are considered equal.
Static Public Member Functions inherited from xtd::object
template<typename object_a_t , typename object_b_t >
static bool	equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are considered equal.
template<typename object_a_t , typename object_b_t >
static bool	reference_equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are the same instance.
Protected Member Functions inherited from xtd::drawing::brush
	brush ()
	Initialize a new instance of brush class.
void	set_native_brush (intptr brush)
	In a derived class, sets a reference to a GDI+ brush object.

Constructor & Destructor Documentation

radial_gradient_brush() [1/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush

(

)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with default values.

Remarks

Center and focal points are set to {0, 0} and colors are set with two transparent colors.

radial_gradient_brush() [2/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point &	center,
		const xtd::drawing::color &	color1,
		const xtd::drawing::color &	color2
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.

radial_gradient_brush() [3/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point_f &	center,
		const xtd::drawing::color &	color1,
		const xtd::drawing::color &	color2
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.

radial_gradient_brush() [4/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point &	center,
		const xtd::drawing::color &	color1,
		const xtd::drawing::color &	color2,
		float	radius
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point ,colors and radius.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.
radius	A float hat represents the radius of the radial gradient.

radial_gradient_brush() [5/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point_f &	center,
		const xtd::drawing::color &	color1,
		const xtd::drawing::color &	color2,
		float	radius
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point, colors and radiuus.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.
radius	A float hat represents the radius of the radial gradient.

radial_gradient_brush() [6/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point &	center,
		const std::vector< xtd::drawing::color > &	radial_colors
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.

radial_gradient_brush() [7/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point_f &	center,
		const std::vector< xtd::drawing::color > &	radial_colors
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point and colors.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.

radial_gradient_brush() [8/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point &	center,
		const std::vector< xtd::drawing::color > &	radial_colors,
		float	radius
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center poin, colors and radius.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.
radius	A float hat represents the radius of the radial gradient.

radial_gradient_brush() [9/9]

xtd::drawing::drawing_2d::radial_gradient_brush::radial_gradient_brush	(	const xtd::drawing::point_f &	center,
		const std::vector< xtd::drawing::color > &	radial_colors,
		float	radius
	)

Initializes a new instance of the xtd::drawing::drawing_2d::radial_gradient_brush class with the specified center point, colors and radius.

Parameters

center	A xtd::drawing::point structure that represents the center point of the radial gradient.
color1	A xtd::drawing::color structure that represents the starting color of the radial gradient.
color2	A xtd::drawing::color structure that represents the ending color of the radial gradient.
radius	A float hat represents the radius of the radial gradient.

Member Function Documentation

center_point() [1/3]

xtd::drawing::point_f xtd::drawing::drawing_2d::radial_gradient_brush::center_point ( ) const

noexcept

Gets the center point of the radial gradient.

Returns

A xtd::drawing::point_f structure that specifies the center point of the radial gradient.

center_point() [2/3]

radial_gradient_brush & xtd::drawing::drawing_2d::radial_gradient_brush::center_point ( const xtd::drawing::point_f &  value )

noexcept

Gets the center point of the radial gradient.

Parameters

value

A xtd::drawing::point_f structure that specifies the center point of the radial gradient.

Returns

This current instance.

center_point() [3/3]

radial_gradient_brush & xtd::drawing::drawing_2d::radial_gradient_brush::center_point ( const xtd::drawing::point &  value )

noexcept

Sets the center point of the radial gradient.

Parameters

value

A xtd::drawing::point_f structure that specifies the center point of the radial gradient.

Returns

This current instance.

focal_point() [1/3]

xtd::drawing::point_f xtd::drawing::drawing_2d::radial_gradient_brush::focal_point ( ) const

noexcept

Gets the focal point of the radial gradient.

Returns

A xtd::drawing::point_f structure that specifies the focal point of the radial gradient.

focal_point() [2/3]

radial_gradient_brush & xtd::drawing::drawing_2d::radial_gradient_brush::focal_point ( const xtd::drawing::point_f &  value )

noexcept

Sets the focal point of the radial gradient.

Parameters

value

A xtd::drawing::point_f structure that specifies the focal point of the radial gradient.

Returns

This current instance.

focal_point() [3/3]

radial_gradient_brush & xtd::drawing::drawing_2d::radial_gradient_brush::focal_point ( const xtd::drawing::point &  value )

noexcept

Sets the focal point of the radial gradient.

Parameters

value

A xtd::drawing::point_f structure that specifies the focal point of the radial gradient.

Returns

This current instance.

radial_colors() [1/2]

const xtd::drawing::drawing_2d::gradient_stop_collection & xtd::drawing::drawing_2d::radial_gradient_brush::radial_colors ( ) const

noexcept

Gets the starting and ending colors of the gradient.

Returns

An array of two xtd::drawing::color structures that represents the starting and ending colors of the gradient.

radial_colors() [2/2]

xtd::drawing::drawing_2d::radial_gradient_brush & xtd::drawing::drawing_2d::radial_gradient_brush::radial_colors

(

const xtd::drawing::drawing_2d::gradient_stop_collection &

radial_colors

)

sets the starting and ending colors of the gradient.

Parameters

radial_colors

An array of two xtd::drawing::color structures that represents the starting and ending colors of the gradient.

Returns

Current radial_gradient_brush instance.

radius() [1/2]

float xtd::drawing::drawing_2d::radial_gradient_brush::radius ( ) const

noexcept

Gets the angle of the gradient.

Returns

A float that specifies the angle of the linear gradient.

radius() [2/2]

radial_gradient_brush & xtd::drawing::drawing_2d::radial_gradient_brush::radius ( float  value )

noexcept

Sets the radius of the gradient.

Parameters

value

A float that specifies the radius of the radial gradient.

Returns

Current linear_gradient_brush instance.

equals() [1/2]

virtual bool xtd::object::equals ( const object &  obj ) const

virtualnoexcept

Determines whether the specified object is equal to the current object.

Parameters

obj	The object to compare with the current object.

Returns

true if the specified object is equal to the current object. otherwise, false.

Examples

The following code example compares the current instance with another object.

#include <xtd/console>
 
using namespace xtd;
 
auto main() -> int {
  auto object1 = new_ptr<object>();
  auto object2 = new_ptr<object>();
  
  auto object3 = object2;
  console::write_line(object1->equals(*object3));
  console::write_line(*object1 == *object3);
  object3 = object1;
  console::write_line(object1->equals(*object3));
  console::write_line(*object1 == *object3);
}
 
// This code produces the following output :
//
// false
// false
// true
// true

Reimplemented from xtd::drawing::brush.

equals() [2/2]

template<typename object_a_t , typename object_b_t >

static bool xtd::object::equals ( const object_a_t &  object_a, const object_b_t &  object_b  )

inlinestaticnoexcept

Determines whether the specified object instances are considered equal.

Parameters

object_a	The first object to compare.
object_b	The second object to compare.

Returns

true if object_a is the same instance as object_b or if both are null references or if object_a(object_b) returns true. otherwise, false.

Examples

The following code example compares different objects.

#include <xtd/console>
 
using namespace xtd;
 
auto main() -> int {
  string s1 = "Tom";
  string s2 = "Carol";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "Tom";
  s2 = "Tom";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "";
  s2 = "Tom";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "Carol";
  s2 = "";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "";
  s2 = "";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
}
 
// This code produces the following output :
//
// object::equals("Tom", "Carol") => false
// object::equals("Tom", "Tom") => true
// object::equals("", "Tom") => false
// object::equals("Carol", "") => false
// object::equals("", "") => true

---

The documentation for this class was generated from the following file:

• xtd.drawing/include/xtd/drawing/drawing_2d/radial_gradient_brush.h