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Since the Cogl 1.18 branch is actively maintained in parallel with the
master branch; this is a counter part to commit 1b83ef938fc16b which
re-licensed the master branch to use the MIT license.
This re-licensing is a follow up to the proposal that was sent to the
Cogl mailing list:
http://lists.freedesktop.org/archives/cogl/2013-December/001465.html
Note: there was a copyright assignment policy in place for Clutter (and
therefore Cogl which was part of Clutter at the time) until the 11th of
June 2010 and so we only checked the details after that point (commit
0bbf50f905)
For each file, authors were identified via this Git command:
$ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD
We received blanket approvals for re-licensing all Red Hat and Collabora
contributions which reduced how many people needed to be contacted
individually:
- http://lists.freedesktop.org/archives/cogl/2013-December/001470.html
- http://lists.freedesktop.org/archives/cogl/2014-January/001536.html
Individual approval requests were sent to all the other identified authors
who all confirmed the re-license on the Cogl mailinglist:
http://lists.freedesktop.org/archives/cogl/2014-January
As well as updating the copyright header in all sources files, the
COPYING file has been updated to reflect the license change and also
document the other licenses used in Cogl such as the SGI Free Software
License B, version 2.0 and the 3-clause BSD license.
This patch was not simply cherry-picked from master; but the same
methodology was used to check the source files.
249 lines
7.1 KiB
C
249 lines
7.1 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*
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* Authors:
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* Owen Taylor <otaylor@redhat.com>
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_OUTPUT_H
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#define __COGL_OUTPUT_H
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#include <cogl/cogl-types.h>
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COGL_BEGIN_DECLS
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/**
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* SECTION:cogl-output
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* @short_description: information about an output device
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*
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* The #CoglOutput object holds information about an output device
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* such as a monitor or laptop display. It can be queried to find
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* out the position of the output with respect to the screen
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* coordinate system and other information such as the resolution
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* and refresh rate of the device.
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*
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* There can be any number of outputs which may overlap: the
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* same area of the screen may be displayed by multiple output
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* devices.
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*
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* XXX: though it's possible to query the position of the output
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* with respect to screen coordinates, there is currently no way
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* of finding out the position of a #CoglOnscreen in screen
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* coordinates, at least without using windowing-system specific
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* API's, so it's not easy to get the output positions relative
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* to the #CoglOnscreen.
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*/
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typedef struct _CoglOutput CoglOutput;
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#define COGL_OUTPUT(X) ((CoglOutput *)(X))
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/**
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* CoglSubpixelOrder:
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* @COGL_SUBPIXEL_ORDER_UNKNOWN: the layout of subpixel
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* components for the device is unknown.
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* @COGL_SUBPIXEL_ORDER_NONE: the device displays colors
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* without geometrically-separated subpixel components,
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* or the positioning or colors of the components do not
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* match any of the values in the enumeration.
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* @COGL_SUBPIXEL_ORDER_HORIZONTAL_RGB: the device has
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* horizontally arranged components in the order
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* red-green-blue from left to right.
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* @COGL_SUBPIXEL_ORDER_HORIZONTAL_BGR: the device has
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* horizontally arranged components in the order
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* blue-green-red from left to right.
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* @COGL_SUBPIXEL_ORDER_VERTICAL_RGB: the device has
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* vertically arranged components in the order
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* red-green-blue from top to bottom.
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* @COGL_SUBPIXEL_ORDER_VERTICAL_BGR: the device has
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* vertically arranged components in the order
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* blue-green-red from top to bottom.
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*
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* Some output devices (such as LCD panels) display colors
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* by making each pixel consist of smaller "subpixels"
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* that each have a particular color. By using knowledge
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* of the layout of this subpixel components, it is possible
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* to create image content with higher resolution than the
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* pixel grid.
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*
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* Since: 1.14
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* Stability: unstable
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*/
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typedef enum {
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COGL_SUBPIXEL_ORDER_UNKNOWN,
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COGL_SUBPIXEL_ORDER_NONE,
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COGL_SUBPIXEL_ORDER_HORIZONTAL_RGB,
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COGL_SUBPIXEL_ORDER_HORIZONTAL_BGR,
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COGL_SUBPIXEL_ORDER_VERTICAL_RGB,
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COGL_SUBPIXEL_ORDER_VERTICAL_BGR
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} CoglSubpixelOrder;
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/**
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* cogl_is_output:
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* @object: A #CoglObject pointer
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*
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* Gets whether the given object references a #CoglOutput.
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*
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* Return value: %TRUE if the object references a #CoglOutput
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* and %FALSE otherwise.
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* Since: 1.14
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* Stability: unstable
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*/
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CoglBool
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cogl_is_output (void *object);
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/**
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* cogl_output_get_x:
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* @output: a #CoglOutput
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*
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* Gets the X position of the output with respect to the coordinate
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* system of the screen.
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*
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* Return value: the X position of the output as a pixel offset
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* from the left side of the screen coordinate space
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* Since: 1.14
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* Stability: unstable
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*/
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int
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cogl_output_get_x (CoglOutput *output);
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/**
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* cogl_output_get_y:
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* @output: a #CoglOutput
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*
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* Gets the Y position of the output with respect to the coordinate
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* system of the screen.
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*
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* Return value: the Y position of the output as a pixel offset
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* from the top side of the screen coordinate space
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* Since: 1.14
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* Stability: unstable
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*/
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int
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cogl_output_get_y (CoglOutput *output);
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/**
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* cogl_output_get_width:
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* @output: a #CoglOutput
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*
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* Gets the width of the output in pixels.
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*
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* Return value: the width of the output in pixels
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* Since: 1.14
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* Stability: unstable
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*/
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int
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cogl_output_get_width (CoglOutput *output);
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/**
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* cogl_output_get_height:
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* @output: a #CoglOutput
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*
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* Gets the height of the output in pixels.
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*
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* Return value: the height of the output in pixels
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* Since: 1.14
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* Stability: unstable
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*/
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int
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cogl_output_get_height (CoglOutput *output);
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/**
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* cogl_output_get_mm_width:
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* @output: a #CoglOutput
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*
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* Gets the physical width of the output. In some cases (such as
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* as a projector), the value returned here might correspond to
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* nominal resolution rather than the actual physical size of the
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* output device.
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*
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* Return value: the height of the output in millimeters. A value
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* of 0 indicates the width is unknown
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* Since: 1.14
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* Stability: unstable
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*/
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int
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cogl_output_get_mm_width (CoglOutput *output);
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/**
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* cogl_output_get_mm_height:
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* @output: a #CoglOutput
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*
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* Gets the physical height of the output. In some cases (such as
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* as a projector), the value returned here might correspond to
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* nominal resolution rather than the actual physical size of the
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* output device.
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*
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* Return value: the height of the output in millimeters. A value
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* of 0 indicates that the height is unknown
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* Since: 1.14
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* Stability: unstable
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*/
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int
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cogl_output_get_mm_height (CoglOutput *output);
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/**
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* cogl_output_get_subpixel_order:
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* @output: a #CoglOutput
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*
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* For an output device where each pixel is made up of smaller components
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* with different colors, returns the layout of the subpixel
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* components.
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*
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* Return value: the order of subpixel components for the output device
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* Since: 1.14
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* Stability: unstable
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*/
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CoglSubpixelOrder
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cogl_output_get_subpixel_order (CoglOutput *output);
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/**
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* cogl_output_get_refresh_rate:
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* @output: a #CoglOutput
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*
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* Gets the number of times per second that the output device refreshes
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* the display contents.
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*
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* Return value: the refresh rate of the output device. A value of zero
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* indicates that the refresh rate is unknown.
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* Since: 1.14
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* Stability: unstable
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*/
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float
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cogl_output_get_refresh_rate (CoglOutput *output);
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COGL_END_DECLS
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#endif /* __COGL_OUTPUT_H */
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