Add more screen stuff

libs/core/screen.cpp

@@ -5,12 +5,19 @@
 * Drawing modes
 */
 enum class Draw {
-    Normal = DRAW_OPT_NORMAL, // set pixels to black, no fill
+    Normal = 0, // set pixels to black, no fill
     Clear = DRAW_OPT_CLEAR_PIXELS,
     Xor = DRAW_OPT_LOGICAL_XOR,
     Fill = DRAW_OPT_FILL_SHAPE,
 };
 
+enum class ScreenFont {
+    Normal = FONTTYPE_NORMAL,
+    Small = FONTTYPE_SMALL,
+    Large = FONTTYPE_LARGE,
+    Tiny = FONTTYPE_TINY,
+};
+
 #define XX(v) ((uint32_t)(v)&0xffff)
 #define YY(v) ((uint32_t)(v) >> 16)
 
@@ -32,8 +39,27 @@ void _drawEllipse(uint32_t p0, uint32_t p1, Draw mode) {
 }
 
 /** Draw text. */
-//%
+//% mode.defl=0
 void drawText(int x, int y, String text, Draw mode) {
     LcdText((int)mode & (int)Draw::Clear ? 0 : 1, x, y, text->data);
 }
+
+/** Clear screen and reset font to normal. */
+//%
+void clear() {
+    LcdClearDisplay();
+}
+
+/** Scroll screen vertically. */
+//%
+void scroll(int v) {
+    LcdScroll(v);
+}
+
+/** Set font for drawText() */
+//%
+void setFont(ScreenFont font) {
+    LcdSelectFont((uint8_t)font);
+}
+
 }