Add option to set image background to white or black

4 files changed, 33 insertions, 13 deletions

diff --git a/feh.1 b/feh.1
index 5b92112..ef0cccf 100644
--- a/feh.1
+++ b/feh.1
@@ -280,6 +280,10 @@ when images are scaled.
 .B -N, --no-menus
 Don't load or show any menus.
 .TP 5
+.B -B, --image-bg STYLE
+Use STYLE as background for transparent image parts and the like.
+Accepted values: white, black, default.
+.TP 5
 .B -1, --next-button B
 Use button B to advance to the next image in slideshow
 mode (defaults to 1, usually the left button).
diff --git a/src/options.c b/src/options.c
index 3dd3981..c41645f 100644
--- a/src/options.c
+++ b/src/options.c
@@ -55,6 +55,7 @@ init_parse_options(int argc, char **argv)
    opt.thumb_h = 60;
    opt.menu_font = estrdup(DEFAULT_MENU_FONT);
    opt.font = estrdup(DEFAULT_FONT);
+   opt.image_bg = estrdup("default");
    opt.menu_bg = estrdup(PREFIX "/share/feh/images/menubg_default.png");
    opt.menu_style = estrdup(PREFIX "/share/feh/fonts/menu.style");
    opt.menu_border = 4;
@@ -316,7 +317,7 @@ static void
 feh_parse_option_array(int argc, char **argv)
 {
    static char stropts[] =
-      "a:A:b:BcC:dD:e:E:f:Fg:GhH:iIj:klL:mM:nNo:O:pqQrR:sS:tT:uUvVwW:xXy:zZ1:2:4:56:78:90:.@:^:~:):|:_:+:";
+      "a:A:b:B:cC:dD:e:E:f:Fg:GhH:iIj:klL:mM:nNo:O:pqQrR:sS:tT:uUvVwW:xXy:zZ1:2:4:56:78:90:.@:^:~:):|:_:+:";
    static struct option lopts[] = {
       /* actions */
       {"help", 0, 0, 'h'},                  /* okay */
@@ -378,6 +379,7 @@ feh_parse_option_array(int argc, char **argv)
       {"bg", 1, 0, 'b'},
       {"fontpath", 1, 0, 'C'},
       {"menu-bg", 1, 0, ')'},
+      {"image-bg", 1, 0, 'B'},
       {"next-button", 1, 0, '1'},
       {"zoom-button", 1, 0, '2'},
       {"menu-button", 1, 0, '4'},
@@ -606,6 +608,10 @@ feh_parse_option_array(int argc, char **argv)
            free(opt.menu_bg);
            opt.menu_bg = estrdup(optarg);
            break;
+        case 'B':
+           free(opt.image_bg);
+           opt.image_bg = estrdup(optarg);
+           break;
         case 'D':
            opt.slideshow_delay = atof(optarg);
            break;
@@ -1002,6 +1008,8 @@ show_usage(void)
 "     --menu-border INT     Specify number of pixels that define the menu\n"
 "                           background's border. Borders are not stretched\n"
 "                           when images are scaled.\n"
+" -B, --image-bg STYLE      Set background for transparent images and the like.\n"
+"                           Accepted values: white, black, default\n"
 " -N, --no-menus            Don't load or show any menus.\n"
 " -1, --next-button B       Use button B to advance to the next image in any\n"
 "                           mode (defaults to 1, usually the left button).\n"
diff --git a/src/options.h b/src/options.h
index 0101885..0c60c9b 100644
--- a/src/options.h
+++ b/src/options.h
@@ -85,6 +85,7 @@ struct __fehoptions
    char *menu_font;
    char *customlist;
    char *menu_bg;
+   char *image_bg;
    char *rcfile;
    char *menu_style;
    char *caption_path;
diff --git a/src/winwidget.c b/src/winwidget.c
index fe98e85..c494123 100644
--- a/src/winwidget.c
+++ b/src/winwidget.c
@@ -627,20 +627,27 @@ feh_create_checks(void)
       eprintf
         ("Unable to create a teeny weeny imlib image. I detect problems");
 
-    for (y = 0; y < 16; y += 8) {
-      onoff = (y / 8) & 0x1;
-      for (x = 0; x < 16; x += 8) {
-        if (onoff)
-          gib_imlib_image_fill_rectangle(checks, x, y, 8, 8, 144, 144, 144,
-                                         255);
-        else
-          gib_imlib_image_fill_rectangle(checks, x, y, 8, 8, 100, 100, 100,
-                                         255);
-        onoff++;
-        if (onoff == 2)
-          onoff = 0;
+    if (strncmp(opt.image_bg, "white", 5) == 0)
+      gib_imlib_image_fill_rectangle(checks, 0, 0, 16, 16, 255, 255, 255, 255);
+    else if (strncmp(opt.image_bg, "black", 5) == 0)
+      gib_imlib_image_fill_rectangle(checks, 0, 0, 16, 16, 0, 0, 0, 255);
+    else {
+      for (y = 0; y < 16; y += 8) {
+        onoff = (y / 8) & 0x1;
+        for (x = 0; x < 16; x += 8) {
+          if (onoff)
+            gib_imlib_image_fill_rectangle(checks, x, y, 8, 8, 144, 144, 144,
+                                           255);
+          else
+            gib_imlib_image_fill_rectangle(checks, x, y, 8, 8, 100, 100, 100,
+                                           255);
+          onoff++;
+          if (onoff == 2)
+            onoff = 0;
+        }
       }
     }
+
     checks_pmap = XCreatePixmap(disp, root, 16, 16, depth);
     gib_imlib_render_image_on_drawable(checks_pmap, checks, 0, 0, 1, 0, 0);
     gib_imlib_free_image_and_decache(checks);