diff options
| -rw-r--r-- | config.def.h | 11 | ||||
| -rw-r--r-- | image.c | 13 |
2 files changed, 18 insertions, 6 deletions
diff --git a/config.def.h b/config.def.h index 99dd8ba..0db7a9b 100644 --- a/config.def.h +++ b/config.def.h @@ -32,10 +32,13 @@ static const suffixmode_t TITLE_SUFFIXMODE = SUFFIX_BASENAME; #endif #ifdef _IMAGE_CONFIG -/* zoom level of 1.0 means 100% */ -static const float ZOOM_MIN = 0.01; -static const float ZOOM_MAX = 20.0; -static const float ZOOM_STEP = 1.2599210498948732; /* 2^(1/3) */ +/* 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; @@ -43,6 +43,9 @@ enum { DEF_GIF_DELAY = 75 }; enum { DEF_WEBP_DELAY = 75 }; #endif +static const float ZOOM_MIN = zoom_levels[0] / 100; +static const float ZOOM_MAX = zoom_levels[ARRLEN(zoom_levels)-1] / 100; + void img_init(img_t *img, win_t *win) { imlib_context_set_display(win->env.dpy); @@ -699,8 +702,14 @@ bool img_zoom_to(img_t *img, float z) bool img_zoom(img_t *img, int d) { - const float z = img->zoom * (d > 0 ? ZOOM_STEP : 1/ZOOM_STEP); - return img_zoom_to(img, z); + int i = d > 0 ? 0 : ARRLEN(zoom_levels)-1; + while (i >= 0 && i < ARRLEN(zoom_levels) && (d > 0 ? + zoom_levels[i]/100 <= img->zoom : zoom_levels[i]/100 >= img->zoom)) + { + i += d; + } + i = MIN(MAX(i, 0), ARRLEN(zoom_levels)-1); + return img_zoom_to(img, zoom_levels[i]/100); } bool img_pos(img_t *img, float x, float y) |