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code cleanup in ultralcd.

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This commit is contained in:
Bernhard Kubicek
2011-11-20 11:55:33 +01:00
parent d8e7e2f72e
commit cd2268f10a
2 changed files with 112 additions and 263 deletions
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49
Marlin/ultralcd.h
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@ -72,6 +72,55 @@
int8_t lastlineoffset;
bool linechanging;
private:
inline void updateActiveLines(const uint8_t &maxlines,volatile int &encoderpos)
{
if(linechanging) return; // an item is changint its value, do not switch lines hence
lastlineoffset=lineoffset;
int curencoderpos=encoderpos;
force_lcd_update=false;
if( (abs(curencoderpos-lastencoderpos)<lcdslow) )
{
lcd.setCursor(0,activeline);lcd.print((activeline+lineoffset)?' ':' ');
if(curencoderpos<0)
{
lineoffset--;
if(lineoffset<0) lineoffset=0;
curencoderpos=lcdslow-1;
force_lcd_update=true;
}
if(curencoderpos>(LCD_HEIGHT-1+1)*lcdslow)
{
lineoffset++;
curencoderpos=(LCD_HEIGHT-1)*lcdslow;
if(lineoffset>(maxlines+1-LCD_HEIGHT))
lineoffset=maxlines+1-LCD_HEIGHT;
if(curencoderpos>maxlines*lcdslow)
curencoderpos=maxlines*lcdslow;
force_lcd_update=true;
}
lastencoderpos=encoderpos=curencoderpos;
activeline=curencoderpos/lcdslow;
if(activeline<0) activeline=0;
if(activeline>LCD_HEIGHT-1) activeline=LCD_HEIGHT-1;
if(activeline>maxlines)
{
activeline=maxlines;
curencoderpos=maxlines*lcdslow;
}
lcd.setCursor(0,activeline);lcd.print((activeline+lineoffset)?'>':'\003');
}
}
inline void clearIfNecessary()
{
if(lastlineoffset!=lineoffset ||force_lcd_update)
{
force_lcd_update=true;
lcd.clear();
}
}
};
//conversion routines, could need some overworking