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scaled-scene-buffer: restructure source files
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- Rename `scaled_scene_buffer` to `scaled_buffer`. This makes it clear
  that `scaled_{font,img,icon}_buffers` are implementations of it.
- Move the files from `src/common` to `src/scaled-buffer` as
  `scaled_icon_buffer` heavily depends on `server` and `view` etc.
This commit is contained in:
tokyo4j 2025-09-02 17:47:01 +09:00 • committed by Johan Malm
parent 02be24bf59
commit 074b27fd47
22 changed files with 128 additions and 125 deletions
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72
include/scaled-buffer/scaled-img-buffer.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef LABWC_SCALED_IMG_BUFFER_H
#define LABWC_SCALED_IMG_BUFFER_H
#include <stdbool.h>
struct wlr_scene_tree;
struct wlr_scene_node;
struct wlr_scene_buffer;
struct lab_img;
struct scaled_img_buffer {
struct scaled_buffer *scaled_buffer;
struct wlr_scene_buffer *scene_buffer;
struct lab_img *img;
int width;
int height;
};
/*
* | |
* .------------------. .------------.
* scaled_img_buffer | new_output_scale | | set_buffer |
* architecture ´------------------` ´------------`
* | ^
* .--------------------------------|----------------|-------------.
* | v | |
* | .-------------------. .-------------------------. |
* | | scaled_img_buffer |----| wlr_buffer LRU cache(2) |<----, |
* | ´-------------------` ´-------------------------` | |
* | | | | |
* | | .--------------------------. | |
* | | | wlr_buffer LRU cache of | | |
* .-------. | | | other scaled_img_buffers | | |
* | theme | | | | with lab_img_equal() | | |
* ´-------` | | ´--------------------------` | |
* | | | / | | |
* | | | not found found | |
* .---------. | .---------. .----------. .------------. | |
* | lab_img |-img_copy-->| lab_img |-----| render() |--->| wlr_buffer |-----` |
* ´---------` | ´---------` ´----------` ´------------` |
* \ | / |
* \ ´----------/----------------------------------------------------`
* \ /
* .----------------. lab_img provides:
* | lab_img_data | - render function
* | refcount=2 | - list of modification functions
* | `-----------------. to apply on top of lib_img_data
* | | when rendering
* | provides (depending on backend): | - lab_img_equal() comparing the
* | - librsvg handle | lab_img_data reference and
* | - cairo surface | modification function pointers
* ´----------------------------------` of two given lab_img instances
*
*/
/*
* Create an auto scaling image buffer, providing a wlr_scene_buffer node for
* display. It gets destroyed automatically when the backing scaled_buffer
* is being destroyed which in turn happens automatically when the backing
* wlr_scene_buffer (or one of its parents) is being destroyed.
*
* This function clones the lab_img passed as the image source, so callers are
* free to destroy it.
*/
struct scaled_img_buffer *scaled_img_buffer_create(struct wlr_scene_tree *parent,
struct lab_img *img, int width, int height);
/* Obtain scaled_img_buffer from wlr_scene_node */
struct scaled_img_buffer *scaled_img_buffer_from_node(struct wlr_scene_node *node);
#endif /* LABWC_SCALED_IMG_BUFFER_H */