1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
//
// Definition of class Fl_Wayland_Graphics_Driver.
//
// Copyright 2021-2023 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
/**
\file Fl_Wayland_Graphics_Driver.H
\brief Definition of Wayland graphics driver.
*/
#ifndef FL_WAYLAND_GRAPHICS_DRIVER_H
#define FL_WAYLAND_GRAPHICS_DRIVER_H
#include "../Cairo/Fl_Cairo_Graphics_Driver.H"
#include <stdint.h> // for uint32_t
#include <wayland-client.h> // for wl_list
class Fl_Wayland_Graphics_Driver : public Fl_Cairo_Graphics_Driver {
public:
struct draw_buffer {
unsigned char *buffer;
cairo_t *cairo_;
size_t data_size; // of wl_buffer and buffer
int stride;
int width;
};
struct wld_buffer {
struct draw_buffer draw_buffer;
struct wl_list link; // links all buffers from the same wl_shm_pool
struct wl_buffer *wl_buffer;
void *data;
struct wl_shm_pool *shm_pool;
bool draw_buffer_needs_commit;
bool in_use; // true while being committed
bool released; // true after buffer_release() was called
};
struct wld_shm_pool_data { // one record attached to each wl_shm_pool object
char *pool_memory; // start of mmap'ed memory encapsulated by the wl_shm_pool
size_t pool_size; // size of encapsulated memory
struct wl_list buffers; // to list of fl_wld_buffer's from this pool
};
static const uint32_t wld_format;
static struct wl_shm_pool *current_pool;
static FL_EXPORT const struct wl_callback_listener *p_surface_frame_listener;
void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen osrc,
int srcx, int srcy) FL_OVERRIDE;
void cache_size(Fl_Image *img, int &width, int &height) FL_OVERRIDE;
static struct wld_buffer *create_wld_buffer(int width, int height, bool with_shm = true);
static void create_shm_buffer(wld_buffer *buffer);
static void buffer_release(struct wld_window *window);
static void buffer_commit(struct wld_window *window, cairo_region_t *r = NULL);
static void cairo_init(struct draw_buffer *buffer, int width, int height, int stride,
cairo_format_t format);
// used by class Fl_Wayland_Gl_Window_Driver
static FL_EXPORT struct draw_buffer *offscreen_buffer(Fl_Offscreen);
static const cairo_user_data_key_t key;
static Fl_Image_Surface *custom_offscreen(int w, int h, struct wld_buffer **buffer);
};
#endif // FL_WAYLAND_GRAPHICS_DRIVER_H
|
