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mutter-performance-source/src/meta/boxes.h

130 lines
4.3 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Simple box operations */
/*
* Copyright (C) 2005, 2006 Elijah Newren
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef META_BOXES_H
#define META_BOXES_H
#include <glib-object.h>
#include <meta/common.h>
#define META_TYPE_RECTANGLE (meta_rectangle_get_type ())
/**
* MetaRectangle:
* @x: X coordinate of the top-left corner
* @y: Y coordinate of the top-left corner
* @width: Width of the rectangle
* @height: Height of the rectangle
*/
typedef struct _MetaRectangle MetaRectangle;
struct _MetaRectangle
{
int x;
int y;
int width;
int height;
};
/**
* MetaStrut:
* @rect: #MetaRectangle the #MetaStrut is on
* @side: #MetaSide the #MetaStrut is on
*/
typedef struct _MetaStrut MetaStrut;
struct _MetaStrut
{
MetaRectangle rect;
MetaSide side;
};
/**
* MetaEdgeType:
* @META_EDGE_WINDOW: Whether the edge belongs to a window
* @META_EDGE_MONITOR: Whether the edge belongs to a monitor
* @META_EDGE_SCREEN: Whether the edge belongs to a screen
*/
typedef enum
{
META_EDGE_WINDOW,
META_EDGE_MONITOR,
META_EDGE_SCREEN
} MetaEdgeType;
/**
* MetaEdge:
* @rect: #MetaRectangle with the bounds of the edge
* @side_type: Side
* @edge_type: To what belongs the edge
*/
typedef struct _MetaEdge MetaEdge;
struct _MetaEdge
{
MetaRectangle rect; /* width or height should be 1 */
MetaSide side_type;
MetaEdgeType edge_type;
};
GType meta_rectangle_get_type (void);
MetaRectangle *meta_rectangle_copy (const MetaRectangle *rect);
void meta_rectangle_free (MetaRectangle *rect);
/* Function to make initializing a rect with a single line of code easy */
MetaRectangle meta_rect (int x, int y, int width, int height);
/* Basic comparison functions */
int meta_rectangle_area (const MetaRectangle *rect);
gboolean meta_rectangle_intersect (const MetaRectangle *src1,
const MetaRectangle *src2,
MetaRectangle *dest);
gboolean meta_rectangle_equal (const MetaRectangle *src1,
const MetaRectangle *src2);
/* Find the bounding box of the union of two rectangles */
void meta_rectangle_union (const MetaRectangle *rect1,
const MetaRectangle *rect2,
MetaRectangle *dest);
/* overlap is similar to intersect but doesn't provide location of
* intersection information.
*/
gboolean meta_rectangle_overlap (const MetaRectangle *rect1,
const MetaRectangle *rect2);
/* vert_overlap means ignore the horizontal location and ask if the
* vertical parts overlap. An alternate way to think of it is "Does there
* exist a way to shift either rect horizontally so that the two rects
* overlap?" horiz_overlap is similar.
*/
gboolean meta_rectangle_vert_overlap (const MetaRectangle *rect1,
const MetaRectangle *rect2);
gboolean meta_rectangle_horiz_overlap (const MetaRectangle *rect1,
const MetaRectangle *rect2);
/* could_fit_rect determines whether "outer_rect" is big enough to contain
* inner_rect. contains_rect checks whether it actually contains it.
*/
gboolean meta_rectangle_could_fit_rect (const MetaRectangle *outer_rect,
const MetaRectangle *inner_rect);
gboolean meta_rectangle_contains_rect (const MetaRectangle *outer_rect,
const MetaRectangle *inner_rect);
#endif /* META_BOXES_H */