Centralise definition of fonts for DOGM displays

Prework for issue #1448 and #1447

Will merge in when pull request #1457 is in.

Marlin/dogm_lcd_implementation.h

 #endif
 */
 
+#define USE_BIG_EDIT_FONT
+#define FONT_STATUSMENU u8g_font_6x9
+#define FONT_MENU u8g_font_6x10_marlin
+
 // DOGM parameters (size in pixels)
 #define DOG_CHAR_WIDTH         6
 #define DOG_CHAR_HEIGHT        12
-#define DOG_CHAR_WIDTH_LARGE   9
-#define DOG_CHAR_HEIGHT_LARGE  18
+#ifdef USE_BIG_EDIT_FONT
+  #define FONT_MENU_EDIT u8g_font_9x18
+  #define DOG_CHAR_WIDTH_EDIT  9
+  #define DOG_CHAR_HEIGHT_EDIT 18
+  #define LCD_WIDTH_EDIT       14
+#else
+  #define FONT_MENU_EDIT u8g_font_6x10_marlin
+  #define DOG_CHAR_WIDTH_EDIT 6
+  #define DOG_CHAR_HEIGHT_EDIT 12
+  #define LCD_WIDTH_EDIT 22
+#endif
 
 #define START_ROW              0
 
 #define LCD_STR_BEDTEMP     "\xFE"
 #define LCD_STR_THERMOMETER "\xFF"
 
-#define FONT_STATUSMENU u8g_font_6x9
-
 int lcd_contrast;
 
 // LCD selection
 	u8g.firstPage();
 	do {
     u8g.drawBitmapP(offx, offy, START_BMPBYTEWIDTH, START_BMPHEIGHT, start_bmp);
-    u8g.setFont(u8g_font_6x10_marlin);
+    u8g.setFont(FONT_MENU);
     #ifndef STRING_SPLASH_LINE2
       u8g.drawStr(txt1X, u8g.getHeight() - DOG_CHAR_HEIGHT, STRING_SPLASH_LINE1);
     #else
   u8g.setColorIndex(1); // black on white
  
   // Feedrate
-  u8g.setFont(u8g_font_6x10_marlin);
+  u8g.setFont(FONT_MENU);
   u8g.setPrintPos(3,49);
   u8g.print(LCD_STR_FEEDRATE[0]);
   u8g.setFont(FONT_STATUSMENU);
 #define lcd_implementation_drawmenu_setting_edit_callback_bool(row, pstr, pstr2, data, callback) lcd_implementation_drawmenu_setting_edit_generic_P(row, pstr, ' ', (*(data))?PSTR(MSG_ON):PSTR(MSG_OFF))
 
 void lcd_implementation_drawedit(const char* pstr, char* value) {
-  u8g.setPrintPos(0 * DOG_CHAR_WIDTH_LARGE, (u8g.getHeight() - 1 - DOG_CHAR_HEIGHT_LARGE) - (1 * DOG_CHAR_HEIGHT_LARGE) - START_ROW );
-  u8g.setFont(u8g_font_9x18);
+  u8g.setPrintPos(0 * DOG_CHAR_WIDTH_EDIT, (u8g.getHeight() - 1 - DOG_CHAR_HEIGHT_EDIT) - (1 * DOG_CHAR_HEIGHT_EDIT) - START_ROW );
+  u8g.setFont(FONT_MENU_EDIT);
   lcd_printPGM(pstr);
   u8g.print(':');
-  u8g.setPrintPos((14 - strlen(value)) * DOG_CHAR_WIDTH_LARGE, (u8g.getHeight() - 1 - DOG_CHAR_HEIGHT_LARGE) - (1 * DOG_CHAR_HEIGHT_LARGE) - START_ROW );
+  u8g.setPrintPos((14 - strlen(value)) * DOG_CHAR_WIDTH_EDIT, (u8g.getHeight() - 1 - DOG_CHAR_HEIGHT_EDIT) - (1 * DOG_CHAR_HEIGHT_EDIT) - START_ROW );
   u8g.print(value);
 }
 

Marlin/ultralcd.cpp

         u8g.firstPage();
         do
         {
-            u8g.setFont(u8g_font_6x10_marlin);
+            u8g.setFont(FONT_MENU);
             u8g.setPrintPos(125,0);
             if (blink % 2) u8g.setColorIndex(1); else u8g.setColorIndex(0); // Set color for the alive dot
             u8g.drawPixel(127,63); // draw alive dot