From 7fa39df4277fba4b567a57c79a8933afc96d9339 Mon Sep 17 00:00:00 2001
From: Tomas Salfischberger <tomas@rockbox.org>
Date: Sun, 22 Jan 2006 01:42:05 +0000
Subject: Horizontal scrolling patch by Shachar Liberman

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8412 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/lcd-h100.c | 38 ++++++++++++++++++++++++++++++--------
 1 file changed, 30 insertions(+), 8 deletions(-)

(limited to 'firmware/drivers/lcd-h100.c')

diff --git a/firmware/drivers/lcd-h100.c b/firmware/drivers/lcd-h100.c
index 1199bf04a1..0df1a3c71a 100644
--- a/firmware/drivers/lcd-h100.c
+++ b/firmware/drivers/lcd-h100.c
@@ -1057,7 +1057,9 @@ void lcd_putsxy(int x, int y, const unsigned char *str)
 
 /*** line oriented text output ***/
 
-void lcd_puts_style(int x, int y, const unsigned char *str, int style)
+/* put a string at a given char position at a given style and with a given pixel position */
+void lcd_puts_style_offset(int x, int y, const unsigned char *str, int style,
+                                                                   int offset)
 {
     int xpos,ypos,w,h;
     int lastmode = drawmode;
@@ -1071,7 +1073,7 @@ void lcd_puts_style(int x, int y, const unsigned char *str, int style)
     lcd_getstringsize(str, &w, &h);
     xpos = xmargin + x*w / utf8length((char *)str);
     ypos = ymargin + y*h;
-    lcd_putsxy(xpos, ypos, str);
+    lcd_putsxyofs(xpos, ypos, offset, str);
     drawmode = (DRMODE_SOLID|DRMODE_INVERSEVID);
     lcd_fillrect(xpos + w, ypos, LCD_WIDTH - (xpos + w), h);
     if (style & STYLE_INVERT)
@@ -1081,6 +1083,16 @@ void lcd_puts_style(int x, int y, const unsigned char *str, int style)
     }
     drawmode = lastmode;
 }
+void lcd_puts_style(int x, int y, const unsigned char *str, int style)
+{
+    lcd_puts_style_offset(x, y, str, style, 0);
+}
+
+/* put a string at a given char position at a given offset mark */
+void lcd_puts_offset(int x, int y, const unsigned char *str, int offset)
+{
+     lcd_puts_style_offset(x, y, str, STYLE_DEFAULT, offset);
+}
 
 /* put a string at a given char position */
 void lcd_puts(int x, int y, const unsigned char *str)
@@ -1133,6 +1145,17 @@ void lcd_puts_scroll(int x, int y, const unsigned char *string)
 }
 
 void lcd_puts_scroll_style(int x, int y, const unsigned char *string, int style)
+{
+     lcd_puts_scroll_style_offset(x, y, string, style, 0);
+}
+
+void lcd_puts_scroll_offset(int x, int y, const unsigned char *string, int offset)
+{
+     lcd_puts_scroll_style_offset(x, y, string, STYLE_DEFAULT, offset);
+}          
+   
+void lcd_puts_scroll_style_offset(int x, int y, const unsigned char *string,
+                                         int style, int offset)
 {
     struct scrollinfo* s;
     int w, h;
@@ -1143,10 +1166,10 @@ void lcd_puts_scroll_style(int x, int y, const unsigned char *string, int style)
     s->invert = false;
     if (style & STYLE_INVERT) {
         s->invert = true;
-        lcd_puts_style(x,y,string,STYLE_INVERT);
+        lcd_puts_style_offset(x,y,string,STYLE_INVERT,offset);
     }
     else
-        lcd_puts(x,y,string);
+        lcd_puts_offset(x,y,string,offset);
 
     lcd_getstringsize(string, &w, &h);
 
@@ -1179,7 +1202,7 @@ void lcd_puts_scroll_style(int x, int y, const unsigned char *string, int style)
         strncpy(end, (char *)string, LCD_WIDTH/2);
 
         s->len = utf8length((char *)string);
-        s->offset = 0;
+        s->offset = offset;
         s->startx = x;
         s->backward = false;
         scrolling_lines |= (1<<y);
@@ -1203,7 +1226,7 @@ static void scroll_thread(void)
     while ( 1 ) {
         for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
             /* really scroll? */
-            if ( !(scrolling_lines&(1<<index)) )
+            if ( !(scrolling_lines&(1<<index)))
                 continue;
 
             s = &scroll[index];
@@ -1246,8 +1269,7 @@ static void scroll_thread(void)
             lcd_fillrect(xpos, ypos, LCD_WIDTH - xpos, pf->height);
             drawmode = DRMODE_SOLID;
             lcd_putsxyofs(xpos, ypos, s->offset, (unsigned char *)s->line);
-            if (s->invert)
-            {
+            if (s->invert) {
                 drawmode = DRMODE_COMPLEMENT;
                 lcd_fillrect(xpos, ypos, LCD_WIDTH - xpos, pf->height);
             }
-- 
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