1 files changed, 411 insertions, 0 deletions
diff --git a/nuttx/graphics/nxfonts/nxfonts_getfont.c b/nuttx/graphics/nxfonts/nxfonts_getfont.c
new file mode 100644
index 000000000..e17d3be31
--- /dev/null
+++ b/nuttx/graphics/nxfonts/nxfonts_getfont.c
@@ -0,0 +1,411 @@
+/****************************************************************************
+ * graphics/nxfonts/nxfonts_getfont.c
+ *
+ *   Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT}
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING}
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stddef.h>
+#include <debug.h>
+
+#include <nuttx/nx/nx.h>
+#include <nuttx/nx/nxfonts.h>
+
+#include "nxfonts_internal.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* SANS */
+
+#ifdef CONFIG_NXFONT_SANS17X22
+extern const struct nx_fontpackage_s g_sans17x22_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS20X26
+extern const struct nx_fontpackage_s g_sans20x26_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS23X27
+extern const struct nx_fontpackage_s g_sans23x27_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS22X29
+extern const struct nx_fontpackage_s g_sans22x29_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS28X37
+extern const struct nx_fontpackage_s g_sans28x37_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS39X48
+extern const struct nx_fontpackage_s g_sans39x48_package;
+#endif
+
+/* SANS-BOLD */
+
+#ifdef CONFIG_NXFONT_SANS17X23B
+extern const struct nx_fontpackage_s g_sans17x23b_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS20X27B
+extern const struct nx_fontpackage_s g_sans20x27b_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS22X29B
+extern const struct nx_fontpackage_s g_sans22x29b_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS28X37B
+extern const struct nx_fontpackage_s g_sans28x37b_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SANS40X49B
+extern const struct nx_fontpackage_s g_sans40x49b_package;
+#endif
+
+/* SERIF */
+
+#ifdef CONFIG_NXFONT_SERIF22X29
+extern const struct nx_fontpackage_s g_serif22x29_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF29X37
+extern const struct nx_fontpackage_s g_serif29x37_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF38X48
+extern const struct nx_fontpackage_s g_serif38x48_package;
+#endif
+
+/* SERIF-BOLD */
+
+#ifdef CONFIG_NXFONT_SERIF22X28B
+extern const struct nx_fontpackage_s g_serif22x28b_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF27X38B
+extern const struct nx_fontpackage_s g_serif27x38b_package;
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF38X49
+extern const struct nx_fontpackage_s g_serif38x49b_package;
+#endif
+
+static FAR const struct nx_fontpackage_s *g_fontpackages[] =
+{
+
+/* SANS */
+
+#ifdef CONFIG_NXFONT_SANS17X22
+  &g_sans17x22_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS20X26
+  &g_sans20x26_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS23X27
+  &g_sans23x27_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS22X29
+  &g_sans22x29_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS28X37
+  &g_sans28x37_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS39X48
+  &g_sans39x48_package,
+#endif
+
+/* SANS-BOLD */
+
+#ifdef CONFIG_NXFONT_SANS17X23B
+  &g_sans17x23b_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS20X27B
+  &g_sans20x27b_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS22X29B
+  &g_sans22x29b_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS28X37B
+  &g_sans28x37b_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SANS40X49B
+  &g_sans40x49b_package,
+#endif
+
+/* SERIF */
+
+#ifdef CONFIG_NXFONT_SERIF22X29
+  &g_serif22x29_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF29X37
+  &g_serif29x37_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF38X48
+  &g_serif38x48_package,
+#endif
+
+/* SERIF-BOLD */
+
+#ifdef CONFIG_NXFONT_SERIF22X28B
+  &g_serif22x28b_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF27X38B
+  &g_serif27x38b_package,
+#endif
+
+#ifdef CONFIG_NXFONT_SERIF38X49B
+  &g_serif38x49b_package,
+#endif
+
+  NULL
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxf_getglyphset
+ *
+ * Description:
+ *   Return information about the font set containtined he selected
+ *   character encoding.
+ *
+ * Input Parameters:
+ *   ch: character code
+ *   package: The selected font package
+ *
+ ****************************************************************************/
+
+static inline FAR const struct nx_fontset_s *
+  nxf_getglyphset(uint16_t ch, FAR const struct nx_fontpackage_s *package)
+{
+  FAR const struct nx_fontset_s *fontset;
+
+  /* Select the 7- or 8-bit font set */
+
+  if (ch < 128)
+    {
+      /* Select the 7-bit font set */
+
+      fontset = &package->font7;
+    }
+  else if (ch < 256)
+    {
+#if CONFIG_NXFONTS_CHARBITS >= 8
+      /* Select the 8-bit font set */
+
+      fontset = &package->font8;
+#else
+      gdbg("8-bit font support disabled: %d\n", ch);
+      return NULL;
+#endif
+    }
+  else
+    {
+      /* Someday, perhaps 16-bit fonts will go here */
+
+      gdbg("16-bit font not currently supported\n");
+      return NULL;
+    }
+
+  /* Then verify that the character actually resides in the font */
+
+  if (ch >= fontset->first && ch < fontset->first +fontset->nchars)
+    {
+      return fontset;
+    }
+
+  gdbg("No bitmap for code %02x\n", ch);
+  return NULL;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxf_getfonthandle
+ *
+ * Description:
+ *   Given a numeric font ID, return a handle that may be subsequently be
+ *   used to access the font data sets.
+ *
+ * Input Parameters:
+ *   fontid:  Identifies the font set to get
+ *
+ ****************************************************************************/
+
+NXHANDLE nxf_getfonthandle(enum nx_fontid_e fontid)
+{
+  FAR const struct nx_fontpackage_s **pkglist;
+  FAR const struct nx_fontpackage_s  *package;
+  FAR const struct nx_fontpackage_s  *defpkg = NULL;
+
+  /* Handle the default font package */
+
+  if (fontid == FONTID_DEFAULT)
+   {
+     fontid = NXFONT_DEFAULT;
+   }
+
+  /* Then search for the font package with this ID */
+
+  for (pkglist = g_fontpackages; *pkglist; pkglist++)
+    {
+      /* Is this the package with the matching font ID? */
+
+      package = *pkglist;
+      if (package->id == fontid)
+        {
+          /* Yes.. return a pointer to the package as the handle */
+
+          return (NXHANDLE)package;
+        }
+ 
+      /* No.. is it the default font? */
+
+      else if (package->id == NXFONT_DEFAULT)
+        {
+          /* Yes.. save the pointer to the default font.  We will return the
+           * default font if the requested font cannot be found.
+           */
+
+          defpkg = package;
+        }
+    }
+
+  /* Return a pointer to the default font as the handle. */
+
+  return (NXHANDLE)defpkg;
+}
+
+/****************************************************************************
+ * Name: nxf_getfontset
+ *
+ * Description:
+ *   Return information about the current font set
+ *
+ * Input Parameters:
+ *   handle:  A font handle previously returned by nxf_getfonthandle
+ *
+ ****************************************************************************/
+
+FAR const struct nx_font_s *nxf_getfontset(NXHANDLE handle)
+{
+  FAR const struct nx_fontpackage_s *package =
+    (FAR const struct nx_fontpackage_s *)handle;
+
+  /* Find the font package associated with this font ID */
+
+  if (package)
+    {
+      /* Found... return the font set metrics for this font package */
+
+      return &package->metrics;
+    }
+
+  return NULL;
+}
+
+/****************************************************************************
+ * Name: nxf_getbitmap
+ *
+ * Description:
+ *   Return font bitmap information for the selected character encoding.
+ *
+ * Input Parameters:
+ *   handle:  A font handle previously returned by nxf_getfonthandle
+ *   ch:      Character code whose bitmap is requested
+ *
+ * Returned Value:
+ *   An instance of struct nx_fontbitmap_s describing the glyph.
+ *
+ ****************************************************************************/
+
+FAR const struct nx_fontbitmap_s *nxf_getbitmap(NXHANDLE handle, uint16_t ch)
+{
+  FAR const struct nx_fontpackage_s *package =
+    (FAR const struct nx_fontpackage_s *)handle;
+  FAR const struct nx_fontset_s     *fontset;
+  FAR const struct nx_fontbitmap_s  *bm  = NULL;
+
+  /* Verify that the handle is a font package */
+
+  if (package)
+    {
+      /* Now get the fontset from the package */
+
+      fontset = nxf_getglyphset(ch, package);
+      if (fontset)
+        {
+          /* Then get the bitmap from the font set */
+
+          bm = &fontset->bitmap[ch - fontset->first];
+        }
+    }
+
+  return bm;
+}