aboutsummaryrefslogtreecommitdiff
path: root/nsxiv.h
blob: 4350864eb7163167a6053836b652e95350e91020 (plain) (blame)
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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
/* Copyright 2011-2020 Bert Muennich
 * Copyright 2021-2022 nsxiv contributors
 *
 * This file is a part of nsxiv.
 *
 * nsxiv is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * nsxiv 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with nsxiv.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NSXIV_H
#define NSXIV_H

#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <Imlib2.h>
#include <X11/Xlib.h>

/*
 * Annotation for functions called in cleanup().
 * These functions are not allowed to call error(!0, ...) or exit().
 */
#define CLEANUP

#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define ABS(a) ((a) > 0 ? (a) : -(a))

#define ARRLEN(a) (sizeof(a) / sizeof((a)[0]))

#define STREQ(s1,s2) (strcmp((s1), (s2)) == 0)

#define TV_DIFF(t1,t2) (((t1)->tv_sec  - (t2)->tv_sec ) * 1000 + \
                        ((t1)->tv_usec - (t2)->tv_usec) / 1000)

#define TV_SET_MSEC(tv,t) {             \
  (tv)->tv_sec  = (t) / 1000;           \
  (tv)->tv_usec = (t) % 1000 * 1000;    \
}

#define TV_ADD_MSEC(tv,t) {             \
  (tv)->tv_sec  += (t) / 1000;          \
  (tv)->tv_usec += (t) % 1000 * 1000;   \
}

typedef enum {
	MODE_ALL,
	MODE_IMAGE,
	MODE_THUMB
} appmode_t;

typedef enum {
	DIR_LEFT  = 1,
	DIR_RIGHT = 2,
	DIR_UP    = 4,
	DIR_DOWN  = 8
} direction_t;

typedef enum {
	DEGREE_90  = 1,
	DEGREE_180 = 2,
	DEGREE_270 = 3
} degree_t;

typedef enum {
	FLIP_HORIZONTAL = 1,
	FLIP_VERTICAL   = 2
} flipdir_t;

typedef enum {
	SCALE_DOWN,
	SCALE_FIT,
	SCALE_FILL,
	SCALE_WIDTH,
	SCALE_HEIGHT,
	SCALE_ZOOM
} scalemode_t;

typedef enum {
	DRAG_RELATIVE,
	DRAG_ABSOLUTE
} dragmode_t;

typedef enum {
	CURSOR_ARROW,
	CURSOR_DRAG_ABSOLUTE,
	CURSOR_DRAG_RELATIVE,
	CURSOR_WATCH,
	CURSOR_LEFT,
	CURSOR_RIGHT,
	CURSOR_NONE,

	CURSOR_COUNT
} cursor_t;

typedef enum {
	FF_WARN    = 1,
	FF_MARK    = 2,
	FF_TN_INIT = 4
} fileflags_t;

typedef struct {
	const char *name; /* as given by user */
	const char *path; /* always absolute */
	fileflags_t flags;
} fileinfo_t;

/* timeouts in milliseconds: */
enum {
	TO_REDRAW_RESIZE = 75,
	TO_REDRAW_THUMBS = 200,
	TO_CURSOR_HIDE   = 1200,
	TO_DOUBLE_CLICK  = 300
};

typedef void (*timeout_f)(void);

typedef struct arl arl_t;
typedef struct img img_t;
typedef struct opt opt_t;
typedef struct tns tns_t;
typedef struct win win_t;


/* autoreload.c */

struct arl {
	int fd;
	int wd_dir;
	int wd_file;
	char *filename;
};

void arl_init(arl_t*);
void arl_cleanup(arl_t*);
void arl_setup(arl_t*, const char* /* result of realpath(3) */);
bool arl_handle(arl_t*);


/* commands.c */

typedef int arg_t;
typedef bool (*cmd_f)(arg_t);

typedef struct {
	cmd_f func;
	appmode_t mode;
} cmd_t;

typedef struct {
	unsigned int mask;
	KeySym ksym_or_button;
	cmd_t cmd;
	arg_t arg;
} keymap_t;

typedef keymap_t button_t;


/* image.c */

typedef struct {
	Imlib_Image im;
	unsigned int delay;
} img_frame_t;

typedef struct {
	img_frame_t *frames;
	int cap;
	int cnt;
	int sel;
	bool animate;
	unsigned int framedelay;
	int length;
} multi_img_t;

struct img {
	Imlib_Image im;
	int w;
	int h;

	win_t *win;
	float x;
	float y;

	Imlib_Color_Modifier cmod;
	int gamma;

	scalemode_t scalemode;
	float zoom;

	bool checkpan;
	bool dirty;
	bool aa;
	bool alpha;

	struct {
		bool on;
		int delay;
	} ss;

	multi_img_t multi;
};

void img_init(img_t*, win_t*);
bool img_load(img_t*, const fileinfo_t*);
CLEANUP void img_close(img_t*, bool);
void img_render(img_t*);
bool img_fit_win(img_t*, scalemode_t);
bool img_zoom(img_t*, int);
bool img_zoom_to(img_t*, float);
bool img_pos(img_t*, float, float);
bool img_pan(img_t*, direction_t, int);
bool img_pan_center(img_t*);
bool img_pan_edge(img_t*, direction_t);
void img_rotate(img_t*, degree_t);
void img_flip(img_t*, flipdir_t);
void img_toggle_antialias(img_t*);
bool img_change_gamma(img_t*, int);
bool img_frame_navigate(img_t*, int);
bool img_frame_animate(img_t*);


/* options.c */

struct opt {
	/* file list: */
	char **filenames;
	bool from_stdin;
	bool to_stdout;
	bool using_null;
	bool recursive;
	int filecnt;
	int startnum;

	/* image: */
	scalemode_t scalemode;
	float zoom;
	bool animate;
	int gamma;
	int slideshow;
	int framerate;

	/* window: */
	bool fullscreen;
	bool hide_bar;
	Window embed; /* unsigned long */
	char *geometry;
	char *res_name;

	/* misc flags: */
	bool quiet;
	bool thumb_mode;
	bool clean_cache;
	bool private_mode;
};

extern const opt_t *options;

void print_usage(void);
void parse_options(int, char**);


/* thumbs.c */

typedef struct {
	Imlib_Image im;
	int w;
	int h;
	int x;
	int y;
} thumb_t;

struct tns {
	fileinfo_t *files;
	thumb_t *thumbs;
	const int *cnt;
	int *sel;
	int initnext;
	int loadnext;
	int first, end;
	int r_first, r_end;

	win_t *win;
	int x;
	int y;
	int cols;
	int rows;
	int zl;
	int bw;
	int dim;

	bool dirty;
};

void tns_clean_cache(void);
void tns_init(tns_t*, fileinfo_t*, const int*, int*, win_t*);
CLEANUP void tns_free(tns_t*);
bool tns_load(tns_t*, int, bool, bool);
void tns_unload(tns_t*, int);
void tns_render(tns_t*);
void tns_mark(tns_t*, int, bool);
void tns_highlight(tns_t*, int, bool);
bool tns_move_selection(tns_t*, direction_t, int);
bool tns_scroll(tns_t*, direction_t, bool);
bool tns_zoom(tns_t*, int);
int tns_translate(tns_t*, int, int);


/* util.c */

#include <dirent.h>

typedef struct {
	DIR *dir;
	char *name;
	int d;
	bool recursive;

	char **stack;
	int stcap;
	int stlen;
} r_dir_t;

typedef struct {
	int readfd;
	int writefd;
	pid_t pid;
} spawn_t;

enum {
	X_READ  = (1 << 0),
	X_WRITE = (1 << 1)
};

extern const char *progname;

void* emalloc(size_t);
void* ecalloc(size_t, size_t);
void* erealloc(void*, size_t);
char* estrdup(const char*);
void error(int, int, const char*, ...);
int r_opendir(r_dir_t*, const char*, bool);
int r_closedir(r_dir_t*);
char* r_readdir(r_dir_t*, bool);
int r_mkdir(char*);
void construct_argv(char**, unsigned int, ...);
spawn_t spawn(const char*, char *const [], unsigned int);


/* window.c */

#include <X11/Xutil.h>
#if HAVE_LIBFONTS
#include <X11/Xft/Xft.h>
#endif

enum {
	BAR_L_LEN = 512,
	BAR_R_LEN = 64
};

enum {
	ATOM_WM_DELETE_WINDOW,
	ATOM__NET_WM_NAME,
	ATOM__NET_WM_ICON_NAME,
	ATOM__NET_WM_ICON,
	ATOM__NET_WM_STATE,
	ATOM__NET_WM_PID,
	ATOM__NET_WM_STATE_FULLSCREEN,
	ATOM_UTF8_STRING,
	ATOM_WM_NAME,
	ATOM_WM_ICON_NAME,
	ATOM_COUNT
};

typedef struct {
	Display *dpy;
	int scr;
	int scrw, scrh;
	Visual *vis;
	Colormap cmap;
	int depth;
} win_env_t;

typedef struct {
	size_t size;
	char *p;
	char *buf;
} win_bar_t;

struct win {
	Window xwin;
	win_env_t env;

	XColor win_bg;
	XColor win_fg;
	XColor mrk_fg;
#if HAVE_LIBFONTS
	XftColor bar_bg;
	XftColor bar_fg;
#endif

	int x;
	int y;
	unsigned int w;
	unsigned int h; /* = win height - bar height */
	unsigned int bw;

	struct {
		int w;
		int h;
		Pixmap pm;
	} buf;

	struct {
		unsigned int h;
		bool top;
		win_bar_t l;
		win_bar_t r;
	} bar;
};

extern Atom atoms[ATOM_COUNT];

void win_init(win_t*);
void win_open(win_t*);
CLEANUP void win_close(win_t*);
bool win_configure(win_t*, XConfigureEvent*);
void win_toggle_fullscreen(win_t*);
void win_toggle_bar(win_t*);
void win_clear(win_t*);
void win_draw(win_t*);
void win_draw_rect(win_t*, int, int, int, int, bool, int, unsigned long);
void win_set_title(win_t*, bool);
void win_set_cursor(win_t*, cursor_t);
void win_cursor_pos(win_t*, int*, int*);

#endif /* NSXIV_H */