mirror of
https://github.com/labwc/labwc.git
synced 2025-11-03 09:01:51 -05:00
2e9b5886ce
Which handles: - conversion from other pixel formats to ARGB32 - setting the logical size to the desired display size - downscaling very large images using CAIRO_FILTER_GOOD
86 lines
3 KiB
C
86 lines
3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Based on wlroots/include/types/wlr_buffer.c
|
|
*
|
|
* Copyright (c) 2017, 2018 Drew DeVault
|
|
* Copyright (c) 2018-2021 Simon Ser, Simon Zeni
|
|
|
|
* 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.
|
|
*/
|
|
#ifndef LABWC_BUFFER_H
|
|
#define LABWC_BUFFER_H
|
|
|
|
#include <cairo.h>
|
|
#include <wlr/types/wlr_buffer.h>
|
|
|
|
struct lab_data_buffer {
|
|
struct wlr_buffer base;
|
|
|
|
cairo_surface_t *surface; /* optional */
|
|
cairo_t *cairo; /* optional */
|
|
void *data; /* owned by surface if surface != NULL */
|
|
uint32_t format;
|
|
size_t stride;
|
|
/*
|
|
* The logical size of the surface in layout pixels.
|
|
* The raw pixel data may be larger or smaller.
|
|
*/
|
|
uint32_t logical_width;
|
|
uint32_t logical_height;
|
|
};
|
|
|
|
/*
|
|
* Create a buffer which holds (and takes ownership of) an existing
|
|
* CAIRO_FORMAT_ARGB32 image surface.
|
|
*
|
|
* The logical size is set to the surface size in pixels, ignoring
|
|
* device scale. No cairo context is created.
|
|
*/
|
|
struct lab_data_buffer *buffer_adopt_cairo_surface(cairo_surface_t *surface);
|
|
|
|
/*
|
|
* Create a buffer which holds a new CAIRO_FORMAT_ARGB32 image surface.
|
|
* Additionally create a cairo context for drawing to the surface.
|
|
*/
|
|
struct lab_data_buffer *buffer_create_cairo(uint32_t logical_width,
|
|
uint32_t logical_height, float scale);
|
|
|
|
/*
|
|
* Create a buffer from an image surface, for display as an icon.
|
|
*
|
|
* The surface is either adopted by the buffer (which takes ownership),
|
|
* or copied and then destroyed.
|
|
*
|
|
* This function allows non-ARGB32 source images and converts to
|
|
* CAIRO_FORMAT_ARGB32 if needed.
|
|
*/
|
|
struct lab_data_buffer *buffer_convert_cairo_surface_for_icon(
|
|
cairo_surface_t *surface, uint32_t icon_size, float scale);
|
|
|
|
/*
|
|
* Create a buffer which holds (and takes ownership of) raw pixel data
|
|
* in pre-multiplied ARGB32 format.
|
|
*
|
|
* The logical size is set to the width and height of the pixel data.
|
|
* No cairo surface or context is created.
|
|
*/
|
|
struct lab_data_buffer *buffer_create_from_data(void *pixel_data, uint32_t width,
|
|
uint32_t height, uint32_t stride);
|
|
|
|
#endif /* LABWC_BUFFER_H */
|