Diff: GraphicsDisplay.h

Revision:

101:e0aad446094a

Parent:

100:0b084475d5a9

Child:

104:8d1d3832a215

diff -r 0b084475d5a9 -r e0aad446094a GraphicsDisplay.h
--- a/GraphicsDisplay.h	Sat Dec 19 15:55:09 2015 +0000
+++ b/GraphicsDisplay.h	Sun Jan 17 22:16:37 2016 +0000
@@ -192,21 +192,37 @@
     
     virtual RetCode_t blit(int x, int y, int w, int h, const int * color);    
     
+    /// This method returns the width in pixels of the chosen character
+    /// from the previously selected external font.
+    ///
+    /// @param[in] c is the character of interest.
+    /// @param[inout] width is a pointer to where the width will be stored.
+    ///     This parameter is NULL tested and will only be written if not null
+    ///     which is convenient if you only want the height.
+    /// @param[inout] height is a pointer to where the height will be stored.
+    ///     This parameter is NULL tested and will only be written if not null
+    ///     which is convenient if you only want the width.
+    /// @returns a pointer to the raw character data or NULL if not found.
+    ///
+    virtual const uint8_t * getCharMetrics(const unsigned char c, uint8_t * width, uint8_t * height);
+    
     /// This method transfers one character from the external font data
     /// to the screen.
     ///
+    /// The font being used has already been set with the SelectUserFont
+    /// API.
+    ///
     /// @note the font data is in a special format as generate by
     ///         the mikroe font creator.
     ///         See http://www.mikroe.com/glcd-font-creator/
     ///
     /// @param[in] x is the horizontal pixel coordinate
     /// @param[in] y is the vertical pixel coordinate
-    /// @param[in] fontTable is the base of the table which has the metrics
     /// @param[in] c is the character to render
     /// @returns how far the cursor should advance to the right in pixels.
     /// @returns zero if the character could not be rendered.
     ///
-    virtual int fontblit(int x, int y, const unsigned char * fontTable, const unsigned char c);
+    virtual int fontblit(int x, int y, const unsigned char c);
     
     /// This method returns the color value from a palette.
     ///