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nsxiv/config.def.h
NRK becf1cc858 fix: build failure when _SC_PHYS_PAGES is not defined 
_SC_PHYS_PAGES isn't POSIX and might not be defined. in such case, just
return back `CACHE_SIZE_FALLBACK`.

NOTE: POSIX says the `names` in `sysconf()` are "symbolic constants" not
necessarily macros. So we might end up returning the fallback in some
cases where `_SC_PHYS_PAGES` *was* available, but not defined as a
macro. which is not ideal, but nothing fatal.

in practice, this shouldn't be an issue since most systems seems to
define them to be macros, i've checked Glibc, Musl, OpenBSD, FreeBSD and
Haiku.

also add a (useful) comment on `config.h` describing the effect higher
cache size has.

Closes: https://codeberg.org/nsxiv/nsxiv/issues/354
2022-08-11 03:58:26 +02:00

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#ifdef INCLUDE_WINDOW_CONFIG
/* default window dimensions (overwritten via -g option): */
static const int WIN_WIDTH = 800;
static const int WIN_HEIGHT = 600;
/* colors and font can be overwritten via X resource properties.
* See nsxiv(1), X(7) section Resources and xrdb(1) for more information.
*/
static const char *DEFAULT_WIN_BG = "white";
static const char *DEFAULT_WIN_FG = "black";
static const char *DEFAULT_MARK_COLOR = NULL; /* NULL means it will default to window foreground */
#if HAVE_LIBFONTS
static const char *DEFAULT_BAR_BG = NULL; /* NULL means it will default to window background */
static const char *DEFAULT_BAR_FG = NULL; /* NULL means it will default to window foreground */
static const char *DEFAULT_FONT = "monospace-8";
/* if true, statusbar appears on top of the window */
static const bool TOP_STATUSBAR = false;
#endif /* HAVE_LIBFONTS */
#endif
#ifdef INCLUDE_IMAGE_CONFIG
/* levels (in percent) to use when zooming via '-' and '+':
* (first/last value is used as min/max zoom level)
*/
static const float zoom_levels[] = {
12.5, 25.0, 50.0, 75.0,
100.0, 150.0, 200.0, 400.0, 800.0
};
/* default slideshow delay (in sec, overwritten via -S option): */
static const int SLIDESHOW_DELAY = 5;
/* gamma correction: the user-visible ranges [-GAMMA_RANGE, 0] and
* (0, GAMMA_RANGE] are mapped to the ranges [0, 1], and (1, GAMMA_MAX].
*/
static const double GAMMA_MAX = 10.0;
static const int GAMMA_RANGE = 32;
/* command i_scroll pans image 1/PAN_FRACTION of screen width/height */
static const int PAN_FRACTION = 5;
/* if false, pixelate images at zoom level != 100%,
* toggled with 'a' key binding
*/
static const bool ANTI_ALIAS = true;
/* if true, use a checkerboard background for alpha layer,
* toggled with 'A' key binding
*/
static const bool ALPHA_LAYER = false;
/* percentage of memory to use for imlib2's cache size.
* 3 means use 3% of total memory which is about 245MiB on 8GiB machine.
* 0 or less means disable cache.
* 100 means use all available memory (but not above CACHE_SIZE_LIMIT).
*
* NOTE: higher cache size means better image reloading performance, but also
* higher memory usage.
*/
static const int CACHE_SIZE_MEM_PERCENTAGE = 3; /* use 3% of total memory for cache */
static const int CACHE_SIZE_LIMIT = 256 * 1024 * 1024; /* but not above 256MiB */
static const int CACHE_SIZE_FALLBACK = 32 * 1024 * 1024; /* fallback to 32MiB if we can't determine total memory */
#endif
#ifdef INCLUDE_THUMBS_CONFIG
/* thumbnail sizes in pixels (width == height): */
static const int thumb_sizes[] = { 32, 64, 96, 128, 160 };
/* thumbnail size at startup, index into thumb_sizes[]: */
static const int THUMB_SIZE = 3;
#endif
#ifdef INCLUDE_MAPPINGS_CONFIG
/* these modifiers will be used when processing keybindings */
static const unsigned int USED_MODMASK = ShiftMask | ControlMask | Mod1Mask;
/* abort the keyhandler */
static const KeySym KEYHANDLER_ABORT = XK_Escape;
/* keyboard mappings for image and thumbnail mode: */
static const keymap_t keys[] = {
/* modifiers key function argument */
{ 0, XK_q, g_quit, 0 },
{ 0, XK_Return, g_switch_mode, None },
{ 0, XK_f, g_toggle_fullscreen, None },
{ 0, XK_b, g_toggle_bar, None },
{ ControlMask, XK_x, g_prefix_external, None },
{ 0, XK_g, g_first, None },
{ 0, XK_G, g_n_or_last, None },
{ 0, XK_r, g_reload_image, None },
{ 0, XK_D, g_remove_image, None },
{ ControlMask, XK_h, g_scroll_screen, DIR_LEFT },
{ ControlMask, XK_Left, g_scroll_screen, DIR_LEFT },
{ ControlMask, XK_j, g_scroll_screen, DIR_DOWN },
{ ControlMask, XK_Down, g_scroll_screen, DIR_DOWN },
{ ControlMask, XK_k, g_scroll_screen, DIR_UP },
{ ControlMask, XK_Up, g_scroll_screen, DIR_UP },
{ ControlMask, XK_l, g_scroll_screen, DIR_RIGHT },
{ ControlMask, XK_Right, g_scroll_screen, DIR_RIGHT },
{ 0, XK_plus, g_zoom, +1 },
{ 0, XK_KP_Add, g_zoom, +1 },
{ 0, XK_minus, g_zoom, -1 },
{ 0, XK_KP_Subtract, g_zoom, -1 },
{ 0, XK_m, g_toggle_image_mark, None },
{ 0, XK_M, g_mark_range, None },
{ ControlMask, XK_m, g_reverse_marks, None },
{ ControlMask, XK_u, g_unmark_all, None },
{ 0, XK_N, g_navigate_marked, +1 },
{ 0, XK_P, g_navigate_marked, -1 },
{ 0, XK_braceleft, g_change_gamma, -1 },
{ 0, XK_braceright, g_change_gamma, +1 },
{ ControlMask, XK_g, g_change_gamma, 0 },
{ 0, XK_h, t_move_sel, DIR_LEFT },
{ 0, XK_Left, t_move_sel, DIR_LEFT },
{ 0, XK_j, t_move_sel, DIR_DOWN },
{ 0, XK_Down, t_move_sel, DIR_DOWN },
{ 0, XK_k, t_move_sel, DIR_UP },
{ 0, XK_Up, t_move_sel, DIR_UP },
{ 0, XK_l, t_move_sel, DIR_RIGHT },
{ 0, XK_Right, t_move_sel, DIR_RIGHT },
{ 0, XK_R, t_reload_all, None },
{ 0, XK_n, i_navigate, +1 },
{ 0, XK_n, i_scroll_to_edge, DIR_LEFT | DIR_UP },
{ 0, XK_space, i_navigate, +1 },
{ 0, XK_p, i_navigate, -1 },
{ 0, XK_p, i_scroll_to_edge, DIR_LEFT | DIR_UP },
{ 0, XK_BackSpace, i_navigate, -1 },
{ 0, XK_bracketright, i_navigate, +10 },
{ 0, XK_bracketleft, i_navigate, -10 },
{ ControlMask, XK_6, i_alternate, None },
{ ControlMask, XK_n, i_navigate_frame, +1 },
{ ControlMask, XK_p, i_navigate_frame, -1 },
{ ControlMask, XK_space, i_toggle_animation, None },
{ ControlMask, XK_a, i_toggle_animation, None },
{ 0, XK_h, i_scroll, DIR_LEFT },
{ 0, XK_Left, i_scroll, DIR_LEFT },
{ 0, XK_j, i_scroll, DIR_DOWN },
{ 0, XK_Down, i_scroll, DIR_DOWN },
{ 0, XK_k, i_scroll, DIR_UP },
{ 0, XK_Up, i_scroll, DIR_UP },
{ 0, XK_l, i_scroll, DIR_RIGHT },
{ 0, XK_Right, i_scroll, DIR_RIGHT },
{ 0, XK_H, i_scroll_to_edge, DIR_LEFT },
{ 0, XK_J, i_scroll_to_edge, DIR_DOWN },
{ 0, XK_K, i_scroll_to_edge, DIR_UP },
{ 0, XK_L, i_scroll_to_edge, DIR_RIGHT },
{ 0, XK_z, i_scroll_to_center, None },
{ 0, XK_equal, i_set_zoom, 100 },
{ 0, XK_w, i_fit_to_win, SCALE_DOWN },
{ 0, XK_W, i_fit_to_win, SCALE_FIT },
{ 0, XK_F, i_fit_to_win, SCALE_FILL },
{ 0, XK_e, i_fit_to_win, SCALE_WIDTH },
{ 0, XK_E, i_fit_to_win, SCALE_HEIGHT },
{ 0, XK_less, i_rotate, DEGREE_270 },
{ 0, XK_greater, i_rotate, DEGREE_90 },
{ 0, XK_question, i_rotate, DEGREE_180 },
{ 0, XK_bar, i_flip, FLIP_HORIZONTAL },
{ 0, XK_underscore, i_flip, FLIP_VERTICAL },
{ 0, XK_a, i_toggle_antialias, None },
{ 0, XK_A, i_toggle_alpha, None },
{ 0, XK_s, i_slideshow, None },
};
/* mouse button mappings for image mode: */
static const button_t buttons_img[] = {
/* modifiers button function argument */
{ 0, 1, i_cursor_navigate, None },
{ ControlMask, 1, i_drag, DRAG_RELATIVE },
{ 0, 2, i_drag, DRAG_ABSOLUTE },
{ 0, 3, g_switch_mode, None },
{ 0, 4, g_zoom, +1 },
{ 0, 5, g_zoom, -1 },
};
/* mouse button mappings for thumbnail mode: */
static const button_t buttons_tns[] = {
/* modifiers button function argument */
{ 0, 1, t_select, None },
{ 0, 3, t_drag_mark_image, None },
{ 0, 4, t_scroll, DIR_UP },
{ 0, 5, t_scroll, DIR_DOWN },
{ ControlMask, 4, g_scroll_screen, DIR_UP },
{ ControlMask, 5, g_scroll_screen, DIR_DOWN },
};
/* true means NAV_WIDTH is relative (33%), false means absolute (33 pixels) */
static const bool NAV_IS_REL = true;
/* width of navigation area, 0 disables cursor navigation, */
static const unsigned int NAV_WIDTH = 33;
/* mouse cursor on left, middle and right part of the window */
static const cursor_t imgcursor[3] = {
CURSOR_LEFT, CURSOR_ARROW, CURSOR_RIGHT
};
#endif
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