mutter/cogl/cogl-path/cogl-path-functions.h
Jonas Ådahl 27b6d1892f cogl/path: Remove API using deprecated Cogl API
The implicit stacks are going away, so remove API that depend on it.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/935
2019-12-03 19:02:14 +00:00

487 lines
14 KiB
C

/*
* Cogl
*
* A Low Level GPU Graphics and Utilities API
*
* Copyright (C) 2008,2009,2013 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_PATH_FUNCTIONS_H__
#define __COGL_PATH_FUNCTIONS_H__
#include <cogl/cogl-types.h>
#ifdef COGL_COMPILATION
#include "cogl-context.h"
#else
#include <cogl/cogl.h>
#endif
#include <glib-object.h>
G_BEGIN_DECLS
/**
* cogl_path_get_gtype:
*
* Returns: a #GType that can be used with the GLib type system.
*/
GType cogl_path_get_gtype (void);
#define cogl_path_new cogl2_path_new
/**
* cogl_path_new:
*
* Creates a new, empty path object. The default fill rule is
* %COGL_PATH_FILL_RULE_EVEN_ODD.
*
* Return value: A pointer to a newly allocated #CoglPath, which can
* be freed using cogl_object_unref().
*
* Since: 2.0
*/
CoglPath *
cogl_path_new (void);
/**
* cogl_path_copy:
* @path: A #CoglPath object
*
* Returns a new copy of the path in @path. The new path has a
* reference count of 1 so you should unref it with
* cogl_object_unref() if you no longer need it.
*
* Internally the path will share the data until one of the paths is
* modified so copying paths should be relatively cheap.
*
* Return value: (transfer full): a copy of the path in @path.
*
* Since: 2.0
*/
CoglPath *
cogl_path_copy (CoglPath *path);
/**
* cogl_is_path:
* @object: A #CoglObject
*
* Gets whether the given object references an existing path object.
*
* Return value: %TRUE if the object references a #CoglPath,
* %FALSE otherwise.
*
* Since: 2.0
*/
gboolean
cogl_is_path (void *object);
#define cogl_path_move_to cogl2_path_move_to
/**
* cogl_path_move_to:
* @x: X coordinate of the pen location to move to.
* @y: Y coordinate of the pen location to move to.
*
* Moves the pen to the given location. If there is an existing path
* this will start a new disjoint subpath.
*
* Since: 2.0
*/
void
cogl_path_move_to (CoglPath *path,
float x,
float y);
#define cogl_path_rel_move_to cogl2_path_rel_move_to
/**
* cogl_path_rel_move_to:
* @x: X offset from the current pen location to move the pen to.
* @y: Y offset from the current pen location to move the pen to.
*
* Moves the pen to the given offset relative to the current pen
* location. If there is an existing path this will start a new
* disjoint subpath.
*
* Since: 2.0
*/
void
cogl_path_rel_move_to (CoglPath *path,
float x,
float y);
#define cogl_path_line_to cogl2_path_line_to
/**
* cogl_path_line_to:
* @x: X coordinate of the end line vertex
* @y: Y coordinate of the end line vertex
*
* Adds a straight line segment to the current path that ends at the
* given coordinates.
*
* Since: 2.0
*/
void
cogl_path_line_to (CoglPath *path,
float x,
float y);
#define cogl_path_rel_line_to cogl2_path_rel_line_to
/**
* cogl_path_rel_line_to:
* @x: X offset from the current pen location of the end line vertex
* @y: Y offset from the current pen location of the end line vertex
*
* Adds a straight line segment to the current path that ends at the
* given coordinates relative to the current pen location.
*
* Since: 2.0
*/
void
cogl_path_rel_line_to (CoglPath *path,
float x,
float y);
#define cogl_path_arc cogl2_path_arc
/**
* cogl_path_arc:
* @center_x: X coordinate of the elliptical arc center
* @center_y: Y coordinate of the elliptical arc center
* @radius_x: X radius of the elliptical arc
* @radius_y: Y radius of the elliptical arc
* @angle_1: Angle in degrees at which the arc begin
* @angle_2: Angle in degrees at which the arc ends
*
* Adds an elliptical arc segment to the current path. A straight line
* segment will link the current pen location with the first vertex
* of the arc. If you perform a move_to to the arcs start just before
* drawing it you create a free standing arc.
*
* The angles are measured in degrees where 0° is in the direction of
* the positive X axis and 90° is in the direction of the positive Y
* axis. The angle of the arc begins at @angle_1 and heads towards
* @angle_2 (so if @angle_2 is less than @angle_1 it will decrease,
* otherwise it will increase).
*
* Since: 2.0
*/
void
cogl_path_arc (CoglPath *path,
float center_x,
float center_y,
float radius_x,
float radius_y,
float angle_1,
float angle_2);
#define cogl_path_curve_to cogl2_path_curve_to
/**
* cogl_path_curve_to:
* @x_1: X coordinate of the second bezier control point
* @y_1: Y coordinate of the second bezier control point
* @x_2: X coordinate of the third bezier control point
* @y_2: Y coordinate of the third bezier control point
* @x_3: X coordinate of the fourth bezier control point
* @y_3: Y coordinate of the fourth bezier control point
*
* Adds a cubic bezier curve segment to the current path with the given
* second, third and fourth control points and using current pen location
* as the first control point.
*
* Since: 2.0
*/
void
cogl_path_curve_to (CoglPath *path,
float x_1,
float y_1,
float x_2,
float y_2,
float x_3,
float y_3);
#define cogl_path_rel_curve_to cogl2_path_rel_curve_to
/**
* cogl_path_rel_curve_to:
* @x_1: X coordinate of the second bezier control point
* @y_1: Y coordinate of the second bezier control point
* @x_2: X coordinate of the third bezier control point
* @y_2: Y coordinate of the third bezier control point
* @x_3: X coordinate of the fourth bezier control point
* @y_3: Y coordinate of the fourth bezier control point
*
* Adds a cubic bezier curve segment to the current path with the given
* second, third and fourth control points and using current pen location
* as the first control point. The given coordinates are relative to the
* current pen location.
*
* Since: 2.0
*/
void
cogl_path_rel_curve_to (CoglPath *path,
float x_1,
float y_1,
float x_2,
float y_2,
float x_3,
float y_3);
#define cogl_path_close cogl2_path_close
/**
* cogl_path_close:
*
* Closes the path being constructed by adding a straight line segment
* to it that ends at the first vertex of the path.
*
* Since: 2.0
*/
void
cogl_path_close (CoglPath *path);
#define cogl_path_line cogl2_path_line
/**
* cogl_path_line:
* @x_1: X coordinate of the start line vertex
* @y_1: Y coordinate of the start line vertex
* @x_2: X coordinate of the end line vertex
* @y_2: Y coordinate of the end line vertex
*
* Constructs a straight line shape starting and ending at the given
* coordinates. If there is an existing path this will start a new
* disjoint sub-path.
*
* Since: 2.0
*/
void
cogl_path_line (CoglPath *path,
float x_1,
float y_1,
float x_2,
float y_2);
#define cogl_path_polyline cogl2_path_polyline
/**
* cogl_path_polyline:
* @coords: (in) (array) (transfer none): A pointer to the first element of an
* array of fixed-point values that specify the vertex coordinates.
* @num_points: The total number of vertices.
*
* Constructs a series of straight line segments, starting from the
* first given vertex coordinate. If there is an existing path this
* will start a new disjoint sub-path. Each subsequent segment starts
* where the previous one ended and ends at the next given vertex
* coordinate.
*
* The coords array must contain 2 * num_points values. The first value
* represents the X coordinate of the first vertex, the second value
* represents the Y coordinate of the first vertex, continuing in the same
* fashion for the rest of the vertices. (num_points - 1) segments will
* be constructed.
*
* Since: 2.0
*/
void
cogl_path_polyline (CoglPath *path,
const float *coords,
int num_points);
#define cogl_path_polygon cogl2_path_polygon
/**
* cogl_path_polygon:
* @coords: (in) (array) (transfer none): A pointer to the first element of
* an array of fixed-point values that specify the vertex coordinates.
* @num_points: The total number of vertices.
*
* Constructs a polygonal shape of the given number of vertices. If
* there is an existing path this will start a new disjoint sub-path.
*
* The coords array must contain 2 * num_points values. The first value
* represents the X coordinate of the first vertex, the second value
* represents the Y coordinate of the first vertex, continuing in the same
* fashion for the rest of the vertices.
*
* Since: 2.0
*/
void
cogl_path_polygon (CoglPath *path,
const float *coords,
int num_points);
#define cogl_path_rectangle cogl2_path_rectangle
/**
* cogl_path_rectangle:
* @x_1: X coordinate of the top-left corner.
* @y_1: Y coordinate of the top-left corner.
* @x_2: X coordinate of the bottom-right corner.
* @y_2: Y coordinate of the bottom-right corner.
*
* Constructs a rectangular shape at the given coordinates. If there
* is an existing path this will start a new disjoint sub-path.
*
* Since: 2.0
*/
void
cogl_path_rectangle (CoglPath *path,
float x_1,
float y_1,
float x_2,
float y_2);
#define cogl_path_ellipse cogl2_path_ellipse
/**
* cogl_path_ellipse:
* @center_x: X coordinate of the ellipse center
* @center_y: Y coordinate of the ellipse center
* @radius_x: X radius of the ellipse
* @radius_y: Y radius of the ellipse
*
* Constructs an ellipse shape. If there is an existing path this will
* start a new disjoint sub-path.
*
* Since: 2.0
*/
void
cogl_path_ellipse (CoglPath *path,
float center_x,
float center_y,
float radius_x,
float radius_y);
#define cogl_path_round_rectangle cogl2_path_round_rectangle
/**
* cogl_path_round_rectangle:
* @x_1: X coordinate of the top-left corner.
* @y_1: Y coordinate of the top-left corner.
* @x_2: X coordinate of the bottom-right corner.
* @y_2: Y coordinate of the bottom-right corner.
* @radius: Radius of the corner arcs.
* @arc_step: Angle increment resolution for subdivision of
* the corner arcs.
*
* Constructs a rectangular shape with rounded corners. If there is an
* existing path this will start a new disjoint sub-path.
*
* Since: 2.0
*/
void
cogl_path_round_rectangle (CoglPath *path,
float x_1,
float y_1,
float x_2,
float y_2,
float radius,
float arc_step);
#define cogl_path_set_fill_rule cogl2_path_set_fill_rule
/**
* cogl_path_set_fill_rule:
* @fill_rule: The new fill rule.
*
* Sets the fill rule of the current path to @fill_rule. This will
* affect how the path is filled when cogl_path_fill() is later
* called. Note that the fill rule state is attached to the path so
* calling cogl_get_path() will preserve the fill rule and calling
* cogl_path_new() will reset the fill rule back to the default.
*
* Since: 2.0
*/
void
cogl_path_set_fill_rule (CoglPath *path, CoglPathFillRule fill_rule);
#define cogl_path_get_fill_rule cogl2_path_get_fill_rule
/**
* cogl_path_get_fill_rule:
*
* Retrieves the fill rule set using cogl_path_set_fill_rule().
*
* Return value: the fill rule that is used for the current path.
*
* Since: 2.0
*/
CoglPathFillRule
cogl_path_get_fill_rule (CoglPath *path);
/**
* cogl_framebuffer_fill_path:
* @framebuffer: A #CoglFramebuffer
* @pipeline: A #CoglPipeline to render with
* @path: The #CoglPath to fill
*
* Fills the interior of the path using the fragment operations
* defined by the pipeline.
*
* The interior of the shape is determined using the fill rule of the
* path. See %CoglPathFillRule for details.
*
* <note>The result of referencing sliced textures in your current
* pipeline when filling a path are undefined. You should pass
* the %COGL_TEXTURE_NO_SLICING flag when loading any texture you will
* use while filling a path.</note>
*
* Stability: unstable
*/
void
cogl_framebuffer_fill_path (CoglFramebuffer *framebuffer,
CoglPipeline *pipeline,
CoglPath *path);
/**
* cogl_framebuffer_stroke_path:
* @framebuffer: A #CoglFramebuffer
* @pipeline: A #CoglPipeline to render with
* @path: The #CoglPath to stroke
*
* Strokes the edge of the path using the fragment operations defined
* by the pipeline. The stroke line will have a width of 1 pixel
* regardless of the current transformation matrix.
*
* Stability: unstable
*/
void
cogl_framebuffer_stroke_path (CoglFramebuffer *framebuffer,
CoglPipeline *pipeline,
CoglPath *path);
/**
* cogl_framebuffer_push_path_clip:
* @framebuffer: A #CoglFramebuffer pointer
* @path: The path to clip with.
*
* Sets a new clipping area using the silhouette of the specified,
* filled @path. The clipping area is intersected with the previous
* clipping area. To restore the previous clipping area, call
* cogl_framebuffer_pop_clip().
*
* Since: 1.0
* Stability: unstable
*/
void
cogl_framebuffer_push_path_clip (CoglFramebuffer *framebuffer,
CoglPath *path);
G_END_DECLS
#endif /* __COGL_PATH_FUNCTIONS_H__ */