Touchscreen: Show a line separator in lists.

This patch adds a configurable line separator between list items, very
similar to lists in Android. Additionally, below the list item there is a
thicker line. It can be disabled in the settings. Its color can
be configured as well.

Remote and monochrome displays are explicitly unsupported. If there is desire
this can be changed but it doesn't seem useful to me.

Change-Id: I005313b0d8f5ecd15864bf20e66ea4e3390d8b7d

1 files changed, 4 insertions, 1 deletions

diff --git a/apps/gui/line.h b/apps/gui/line.h
index 9a0769de35..c14f04d9a2 100644
--- a/apps/gui/line.h
+++ b/apps/gui/line.h
@@ -74,11 +74,14 @@ struct line_desc {
     enum line_styles style;
     /* whether the line can scroll */
     bool scroll;
+    /* height of the line separator (in pixels). 0 to disable drawing
+     * of the separator */
+    int8_t separator_height;
 };
 
 /* default initializer, can be used for static initialitation also.
  * This initializer will result in single lines without style that don't scroll */
-#define LINE_DESC_DEFINIT { .style = STYLE_DEFAULT, .height = -1, .line = 0, .nlines = 1, .scroll = false }
+#define LINE_DESC_DEFINIT { .style = STYLE_DEFAULT, .height = -1, .separator_height = 0, .line = 0, .nlines = 1, .scroll = false }
 
 /**
  * Print a line at a given pixel postion, using decoration information from