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#include <gtk/gtk.h>
GtkGradient;
GtkGradient * gtk_gradient_new_linear (gdouble x0,
gdouble y0,
gdouble x1,
gdouble y1);
GtkGradient * gtk_gradient_new_radial (gdouble x0,
gdouble y0,
gdouble radius0,
gdouble x1,
gdouble y1,
gdouble radius1);
void gtk_gradient_add_color_stop (GtkGradient *gradient,
gdouble offset,
GtkSymbolicColor *color);
GtkGradient * gtk_gradient_ref (GtkGradient *gradient);
void gtk_gradient_unref (GtkGradient *gradient);
gboolean gtk_gradient_resolve (GtkGradient *gradient,
GtkStyleProperties *props,
cairo_pattern_t **resolved_gradient);
cairo_pattern_t * gtk_gradient_resolve_for_context (GtkGradient *gradient,
GtkStyleContext *context);
char * gtk_gradient_to_string (GtkGradient *gradient);
GtkGradient is a boxed type that represents a gradient.
It is the result of parsing a
gradient expression.
To obtain the gradient represented by a GtkGradient, it has to
be resolved with gtk_gradient_resolve(), which replaces all
symbolic color references by the colors they refer to (in a given
context) and constructs a cairo_pattern_t value.
It is not normally necessary to deal directly with GtkGradients, since they are mostly used behind the scenes by GtkStyleContext and GtkCssProvider.
GtkGradient is deprecated. It was used internally by GTK's CSS engine to represent gradients. As its handling is not conforming to modern web standards, it is not used anymore. If you want to use gradients in your own code, please use Cairo directly.
GtkGradient * gtk_gradient_new_linear (gdouble x0,gdouble y0,gdouble x1,gdouble y1);
gtk_gradient_new_linear has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
Creates a new linear gradient along the line defined by (x0, y0) and (x1, y1). Before using the gradient
a number of stop colors must be added through gtk_gradient_add_color_stop().
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X coordinate of the starting point |
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Y coordinate of the starting point |
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X coordinate of the end point |
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Y coordinate of the end point |
Returns : |
A newly created GtkGradient |
Since 3.0
GtkGradient * gtk_gradient_new_radial (gdouble x0,gdouble y0,gdouble radius0,gdouble x1,gdouble y1,gdouble radius1);
gtk_gradient_new_radial has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
Creates a new radial gradient along the two circles defined by (x0, y0, radius0) and
(x1, y1, radius1). Before using the gradient a number of stop colors must be added
through gtk_gradient_add_color_stop().
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X coordinate of the start circle |
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Y coordinate of the start circle |
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radius of the start circle |
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X coordinate of the end circle |
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Y coordinate of the end circle |
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radius of the end circle |
Returns : |
A newly created GtkGradient |
Since 3.0
void gtk_gradient_add_color_stop (GtkGradient *gradient,gdouble offset,GtkSymbolicColor *color);
gtk_gradient_add_color_stop has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
Adds a stop color to gradient.
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a GtkGradient |
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offset for the color stop |
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color to use |
Since 3.0
GtkGradient * gtk_gradient_ref (GtkGradient *gradient);
gtk_gradient_ref has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
Increases the reference count of gradient.
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a GtkGradient |
Returns : |
The same gradient
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Since 3.0
void gtk_gradient_unref (GtkGradient *gradient);
gtk_gradient_unref has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
Decreases the reference count of gradient, freeing its memory
if the reference count reaches 0.
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a GtkGradient |
Since 3.0
gboolean gtk_gradient_resolve (GtkGradient *gradient,GtkStyleProperties *props,cairo_pattern_t **resolved_gradient);
gtk_gradient_resolve has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
If gradient is resolvable, resolved_gradient will be filled in
with the resolved gradient as a cairo_pattern_t, and TRUE will
be returned. Generally, if gradient can't be resolved, it is
due to it being defined on top of a named color that doesn't
exist in props.
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a GtkGradient |
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GtkStyleProperties to use when resolving named colors |
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return location for the resolved pattern. [out] |
Returns : |
TRUE if the gradient has been resolved |
Since 3.0
cairo_pattern_t * gtk_gradient_resolve_for_context (GtkGradient *gradient,GtkStyleContext *context);
char * gtk_gradient_to_string (GtkGradient *gradient);
gtk_gradient_to_string has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
Creates a string representation for gradient that is suitable
for using in GTK CSS files.
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the gradient to print |
Returns : |
A string representation for gradient
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