Display a simple grid with histogram.

diff --git a/src/image-overlay.c b/src/image-overlay.c
index a7ac914..1aad88e 100644 (file)
--- a/src/image-overlay.c
+++ b/src/image-overlay.c
@@ -79,6 +79,7 @@ static OSDIcon osd_icons[] = {
 #define IMAGE_OSD_DEFAULT_DURATION 30
 
 #define HISTOGRAM_HEIGHT 140
+#define HISTOGRAM_WIDTH  256
 
 static void image_osd_timer_schedule(OverlayStateData *osd);
 
@@ -448,7 +449,7 @@ static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
        if (with_hist)
                {
                histogram_read(osd->histogram, imgpixbuf);
-               if (width < 266) width = 266;
+               if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
                height += HISTOGRAM_HEIGHT + 5;
                }
 
@@ -466,8 +467,27 @@ static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
                pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 
                if (with_hist)
-                       histogram_draw(osd->histogram, pixbuf, 5, height - HISTOGRAM_HEIGHT - 5 , width - 10, HISTOGRAM_HEIGHT);
+                       {
+                       gint x = 5;
+                       gint y = height - HISTOGRAM_HEIGHT - 5;
+                       gint w = width - 10;
+                       gint xoffset = 0;
+                       gint subdiv = 5;
+                       gint c = 160;
+                       gint alpha = 250;
+                       gint i;
+
+                       for (i = 0; i < subdiv; i++)
+                               {
+                               gint d = (i > 0 ? 0 : 1);
+                               gint div_width = d + w / subdiv;
 
+                               pixbuf_set_rect(pixbuf, x + xoffset, y, div_width, HISTOGRAM_HEIGHT, c, c, c, alpha, d, 1, 1, 1);
+                               xoffset += div_width;
+                               }
+                                               
+                       histogram_draw(osd->histogram, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
+                       }
                pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
        }