support for 'aligned pingpong' by Martin Zuther

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1083 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

diff --git a/widget_text.c b/widget_text.c
index f5699dcc1ef87984efcfd6a59e6d7bdd917d8257..c793f82ae93eff41265f6c98d661156712c13b35 100644 (file)
--- a/widget_text.c
+++ b/widget_text.c
@@ -98,12 +98,28 @@ void widget_text_scroll(void *Self)
        if (T->scroll >= width + len)
            T->scroll = 0;
        break;
-    case ALIGN_PINGPONG:
+    case ALIGN_PINGPONG_LEFT:
+    case ALIGN_PINGPONG_CENTER:
+    case ALIGN_PINGPONG_RIGHT:
 #define PINGPONGWAIT 2
 
-       /* scrolling is not necessary - center the string */
+       /* scrolling is not necessary - align the string */
        if (len <= width) {
-           pad = (width - len) / 2;
+           switch (T->align) {
+           case ALIGN_PINGPONG_LEFT:
+               pad = 0;
+               break;
+           case ALIGN_PINGPONG_RIGHT:
+               pad = width - len;
+               if (pad < 0)
+                   pad = 0;
+               break;
+           default:
+               pad = (width - len) / 2;
+               if (pad < 0)
+                   pad = 0;
+               break;
+           }
        } else {
            if (T->direction == 1)
                T->scroll++;    /* scroll right */
@@ -258,14 +274,15 @@ void widget_text_update(void *Self)
        T->scroll = 0;
 
        /* Init pingpong scroller. start scrolling left (wrong way) to get a delay */
-       if (T->align == ALIGN_PINGPONG) {
+       if (T->align == ALIGN_PINGPONG_LEFT || T->align == ALIGN_PINGPONG_CENTER || T->align == ALIGN_PINGPONG_RIGHT) {
            T->direction = 0;
            T->delay = PINGPONGWAIT;
        }
        /* if there's a marquee scroller active, it has its own */
        /* update callback timer, so we do nothing here; otherwise */
        /* we simply call this scroll callback directly */
-       if (T->align != ALIGN_MARQUEE || T->align != ALIGN_AUTOMATIC || T->align != ALIGN_PINGPONG) {
+       if (T->align != ALIGN_MARQUEE || T->align != ALIGN_AUTOMATIC || T->align != ALIGN_PINGPONG_LEFT
+           || T->align != ALIGN_PINGPONG_CENTER || T->align != ALIGN_PINGPONG_RIGHT) {
            widget_text_scroll(Self);
        }
     }
@@ -312,7 +329,7 @@ int widget_text_init(WIDGET * Self)
 
     /* field alignment: Left (default), Center, Right or Marquee */
     c = cfg_get(section, "align", "L");
-    switch (toupper(*c)) {
+    switch (toupper(c[0])) {
     case 'L':
        Text->align = ALIGN_LEFT;
        break;
@@ -329,7 +346,20 @@ int widget_text_init(WIDGET * Self)
        Text->align = ALIGN_AUTOMATIC;
        break;
     case 'P':
-       Text->align = ALIGN_PINGPONG;
+       switch (toupper(c[1])) {
+       case 'C':
+           Text->align = ALIGN_PINGPONG_CENTER;
+           break;
+       case 'L':
+           Text->align = ALIGN_PINGPONG_LEFT;
+           break;
+       case 'R':
+           Text->align = ALIGN_PINGPONG_RIGHT;
+           break;
+       default:
+           Text->align = ALIGN_PINGPONG_CENTER;
+           error("widget %s has unknown alignment '%s', using 'Centered Pingpong'", section, c);
+       }
        break;
     default:
        error("widget %s has unknown alignment '%s', using 'Left'", section, c);
@@ -344,7 +374,8 @@ int widget_text_init(WIDGET * Self)
        Text->update = 10;
 
     /* marquee scroller speed: interval (msec), default 500msec */
-    if (Text->align == ALIGN_MARQUEE || Text->align == ALIGN_AUTOMATIC || Text->align == ALIGN_PINGPONG) {
+    if (Text->align == ALIGN_MARQUEE || Text->align == ALIGN_AUTOMATIC || Text->align == ALIGN_PINGPONG_LEFT
+       || Text->align == ALIGN_PINGPONG_CENTER || Text->align == ALIGN_PINGPONG_RIGHT) {
        cfg_number(section, "speed", 500, 10, -1, &(Text->speed));
     }
     //update on this event
@@ -370,7 +401,8 @@ int widget_text_init(WIDGET * Self)
     timer_add(widget_text_update, Self, Text->update, Text->update == 0);
 
     /* a marquee scroller has its own timer and callback */
-    if (Text->align == ALIGN_MARQUEE || Text->align == ALIGN_AUTOMATIC || Text->align == ALIGN_PINGPONG) {
+    if (Text->align == ALIGN_MARQUEE || Text->align == ALIGN_AUTOMATIC || Text->align == ALIGN_PINGPONG_LEFT
+       || Text->align == ALIGN_PINGPONG_CENTER || Text->align == ALIGN_PINGPONG_RIGHT) {
        timer_add(widget_text_scroll, Self, Text->speed, 0);
     }
 

diff --git a/widget_text.h b/widget_text.h
index 2ca6f30e8464a3c3ec6bf6cfd5e3d8165331a108..085ea498f6b1b967ce933699337f73d4d5745b77 100644 (file)
--- a/widget_text.h
+++ b/widget_text.h
@@ -30,7 +30,9 @@
 
 #include "property.h"
 
-typedef enum { ALIGN_LEFT, ALIGN_CENTER, ALIGN_RIGHT, ALIGN_MARQUEE, ALIGN_AUTOMATIC, ALIGN_PINGPONG } TEXT_ALIGN;
+typedef enum { ALIGN_LEFT, ALIGN_CENTER, ALIGN_RIGHT, ALIGN_MARQUEE, ALIGN_AUTOMATIC, ALIGN_PINGPONG_LEFT,
+    ALIGN_PINGPONG_CENTER, ALIGN_PINGPONG_RIGHT
+} TEXT_ALIGN;
 
 typedef struct WIDGET_TEXT {
     PROPERTY prefix;           /* label on the left side */