Graphics: Add drawHLine and drawVLine functions

openrtx/include/interfaces/graphics.h

@@ -172,6 +172,23 @@ void gfx_setPixel(point_t pos, color_t color);
  */
 void gfx_drawLine(point_t start, point_t end, color_t color);
 
+
+/**
+ * Draw a horizontal line with specified vertical position and width.
+ * @param y: vertical position, in pixel coordinates.
+ * @param height: line height, in pixel coordinates.
+ * @param color: line color, in color_t format.
+ */
+void gfx_drawHLine(uint16_t y, uint16_t height, color_t color);
+
+/**
+ * Draw a vertical line with specified horizontal position and width.
+ * @param x: horizontal position, in pixel coordinates.
+ * @param width: line width, in pixel coordinates.
+ * @param color: line color, in color_t format.
+ */
+void gfx_drawVLine(uint16_t x, uint16_t width, color_t color);
+
 /**
  * Draw a rectangle of specified width, height and color.
  * @param width: rectangle width, in pixels, borders included.

openrtx/src/graphics/graphics_bw.c

@@ -157,6 +157,18 @@ void gfx_drawRect(point_t start, uint16_t width, uint16_t height, color_t color,
     }
 }
 
+void gfx_drawHLine(uint16_t y, uint16_t height, color_t color)
+{
+    point_t start = {0, y}; 
+    gfx_drawRect(start, SCREEN_WIDTH, height, color, 1); 
+}
+
+void gfx_drawVLine(uint16_t x, uint16_t width, color_t color)
+{
+    point_t start = {x, 0}; 
+    gfx_drawRect(start, width, SCREEN_HEIGHT, color, 1); 
+}
+
 /**
  * Compute the pixel size of the first text line
  * @param f: font used as the source of glyphs

openrtx/src/graphics/graphics_rgb565.c

@@ -146,6 +146,18 @@ void gfx_drawRect(point_t start, uint16_t width, uint16_t height, color_t color,
     }
 }
 
+void gfx_drawHLine(uint16_t y, uint16_t height, color_t color)
+{
+    point_t start = {0, y};
+    gfx_drawRect(start, SCREEN_WIDTH, height, color, 1);
+}
+
+void gfx_drawVLine(uint16_t x, uint16_t width, color_t color)
+{
+    point_t start = {x, 0};
+    gfx_drawRect(start, width, SCREEN_HEIGHT, color, 1);
+}
+
 /**
  * Compute the pixel size of the first text line
  * @param f: font used as the source of glyphs