gtk/gdk/gdktoplevelsize.c
2020-08-21 15:29:34 +02:00

142 lines
4.6 KiB
C

/* GDK - The GIMP Drawing Kit
* Copyright (C) 2020 Red Hat
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include "gdktoplevelsizeprivate.h"
/**
* SECTION:gdktoplevelsize
* @Title: GdkToplevelSize
* @Short_description: Information for computing toplevel size
*
* The GdkToplevelSIze struct contains information that may be useful
* for users of GdkToplevel to compute a surface size. It also carries
* information back with the computational result.
*/
G_DEFINE_POINTER_TYPE (GdkToplevelSize, gdk_toplevel_size)
#define UNCONFIGURED_WIDTH 400
#define UNCONFIGURED_HEIGHT 300
void
gdk_toplevel_size_init (GdkToplevelSize *size,
int bounds_width,
int bounds_height)
{
*size = (GdkToplevelSize) { 0 };
size->bounds_width = bounds_width;
size->bounds_height = bounds_height;
size->width = UNCONFIGURED_WIDTH;
size->height = UNCONFIGURED_HEIGHT;
}
/**
* gdk_toplevel_size_get_bounds:
* @size: a #GdkToplevelSize
* @bounds_width: (out): return location for width
* @bounds_height: (out): return location for height
*
* Retrieves the bounds the toplevel is placed within.
*
* The bounds represent the largest size a toplevel may have while still being
* able to fit within some type of boundary. Depending on the backend, this may
* be equivalent to the dimensions of the work area or the monitor on which the
* window is being presented on, or something else that limits the way a
* toplevel can be presented.
*/
void
gdk_toplevel_size_get_bounds (GdkToplevelSize *size,
int *bounds_width,
int *bounds_height)
{
g_return_if_fail (bounds_width);
g_return_if_fail (bounds_height);
*bounds_width = size->bounds_width;
*bounds_height = size->bounds_height;
}
/**
* gdk_toplevel_size_set_size:
* @size: a #GdkToplevelSize
* @width: the width
* @height: the height
*
* Sets the size the toplevel prefers to be resized to. The size should be
* within the bounds (see gdk_toplevel_size_get_bounds()). The set size should
* be considered as a hint, and should not be assumed to be respected by the
* windowing system, or backend.
*/
void
gdk_toplevel_size_set_size (GdkToplevelSize *size,
int width,
int height)
{
size->width = width;
size->height = height;
}
/**
* gdk_toplevel_size_set_min_size:
* @size: a #GdkToplevelSize
* @min_width: the minimum width
* @min_height: the minimum height
*
* The minimum size corresponds to the limitations the toplevel can be shrunk
* to, without resulting in incorrect painting. A user of a #GdkToplevel should
* calculate these given both the existing size, and the bounds retrieved from
* the #GdkToplevelSize object.
*
* The minimum size should be within the bounds (see
* gdk_toplevel_size_get_bounds()).
*/
void
gdk_toplevel_size_set_min_size (GdkToplevelSize *size,
int min_width,
int min_height)
{
size->min_width = min_width;
size->min_height = min_height;
}
void
gdk_toplevel_size_validate (GdkToplevelSize *size)
{
if (size->min_width > size->bounds_width ||
size->min_height > size->bounds_height)
g_warning ("GdkToplevelSize: min_size (%d, %d) exceeds bounds (%d, %d)",
size->min_width, size->min_height,
size->bounds_width, size->bounds_height);
if (size->width > size->bounds_width ||
size->height > size->bounds_height)
g_warning ("GdkToplevelSize: size (%d, %d) exceeds bounds (%d, %d)",
size->width, size->height,
size->bounds_width, size->bounds_height);
if (size->min_width > size->width ||
size->min_height > size->height)
g_warning ("GdkToplevelSize: min_size (%d, %d) exceeds size (%d, %d)",
size->min_width, size->min_height,
size->width, size->height);
}