Diff: font.h

Revision:

0:62d7cfac67ca

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/font.h	Wed Jul 23 10:40:35 2014 +0000
@@ -0,0 +1,89 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+
+#ifndef __GUI_FONT_H__
+#define __GUI_FONT_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*----------------------------------------------------------------------
+ * Type declarations
+ *----------------------------------------------------------------------*/
+
+typedef struct glyph_t {
+    int8_t       bearingX;  /* The horizontal distance from the
+                             * current pen position to the glyph's
+                             * left bbox edge. */
+    int8_t       bearingY;  /* The vertical distance from the
+                             * baseline to the top of the glyph's
+                             * bbox. */
+    unsigned int width       : 6; /* The glyph's horizontal extent. */
+    unsigned int height      : 6; /* The glyph's vertical extent. */
+    unsigned int advance     : 6; /* The horizontal distance the
+                                   * pen position must be
+                                   * incremented (for
+                                   * left-to-right writing) or
+                                   * decremented (for
+                                   * right-to-left writing) by
+                                   * after each glyph is rendered
+                                   * when processing text. */
+    unsigned int bitmapIndex : 14; /* byte-index of the start of
+                                    * the glyph's bitmap as
+                                    * contained in the font-face
+                                    * bitmaps array */
+} __attribute__((__packed__)) glyph_t;
+
+typedef struct font_face_t {
+    const char    *familyName;
+    unsigned int   pointSize;
+    const glyph_t *glyphs;
+    const uint8_t *bitmaps;
+} font_face_t;
+
+
+#define FONT_LOWEST_SUPPORTED_CHAR_ENCODING  ' '
+#define FONT_HIGHEST_SUPPORTED_CHAR_ENCODING '~'
+
+
+typedef enum font_color_t {
+    BLACK = 0,
+    WHITE = 1
+} font_color_t;
+
+
+/*----------------------------------------------------------------------
+ * External globals
+ *----------------------------------------------------------------------*/
+
+extern const font_face_t fonts[];
+
+
+/*----------------------------------------------------------------------
+ * Exported functions.
+ *----------------------------------------------------------------------*/
+
+extern const font_face_t *lookupFontFace(const char   *familyName,
+                                         unsigned int  pointSize);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* __GUI_FONT_H__ */