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+/****************************************************************************
+ * examples/nx/nx_kbdin.c
+ *
+ * Copyright (C) 2008, 2010 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/nx.h>
+#include <nuttx/nxtk.h>
+#include <nuttx/nxfonts.h>
+
+#include "nx_internal.h"
+
+#ifdef CONFIG_NX_KBD
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Select renderer -- Some additional logic would be required to support
+ * pixel depths that are not directly addressable (1,2,4, and 24).
+ */
+
+#if CONFIG_EXAMPLES_NX_BPP == 1
+# define RENDERER nxf_convert_1bpp
+#elif CONFIG_EXAMPLES_NX_BPP == 2
+# define RENDERER nxf_convert_2bpp
+#elif CONFIG_EXAMPLES_NX_BPP == 4
+# define RENDERER nxf_convert_4bpp
+#elif CONFIG_EXAMPLES_NX_BPP == 8
+# define RENDERER nxf_convert_8bpp
+#elif CONFIG_EXAMPLES_NX_BPP == 16
+# define RENDERER nxf_convert_16bpp
+#elif CONFIG_EXAMPLES_NX_BPP == 24
+# define RENDERER nxf_convert_24bpp
+#elif CONFIG_EXAMPLES_NX_BPP == 32
+# define RENDERER nxf_convert_32bpp
+#else
+# error "Unsupported CONFIG_EXAMPLES_NX_BPP"
+#endif
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxeg_fillchar
+ ****************************************************************************/
+
+static void nxeg_fillchar(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
+ FAR const struct nxeg_bitmap_s *bm)
+{
+ FAR void *src = (FAR void *)bm->glyph->bitmap;
+ struct nxgl_rect_s intersection;
+ int ret;
+
+ /* Handle the special case of spaces which have no glyph bitmap */
+
+ if (src)
+ {
+ /* Get the intersection of the redraw region and the characer bitmap */
+
+ nxgl_rectintersect(&intersection, rect, &bm->bounds);
+ if (!nxgl_nullrect(&intersection))
+ {
+#ifndef CONFIG_EXAMPLES_NX_RAWWINDOWS
+ ret = nxtk_bitmapwindow((NXTKWINDOW)hwnd, &intersection, &src,
+ &bm->bounds.pt1,
+ (unsigned int)bm->glyph->stride);
+ if (ret < 0)
+ {
+ message("nxeg_fillchar: nxtk_bitmapwindow failed: %d\n", errno);
+ }
+#else
+ ret = nx_bitmap((NXWINDOW)hwnd, &intersection, &src,
+ &bm->bounds.pt1,
+ (unsigned int)bm->glyph->stride);
+ if (ret < 0)
+ {
+ message("nxeg_fillchar: nx_bitmapwindow failed: %d\n", errno);
+ }
+#endif
+ }
+ }
+}
+
+/****************************************************************************
+ * Name: nxeg_renderglyph
+ ****************************************************************************/
+
+static inline FAR const struct nxeg_glyph_s *
+nxeg_renderglyph(FAR struct nxeg_state_s *st,
+ FAR const struct nx_fontbitmap_s *bm, uint8_t ch)
+{
+ FAR struct nxeg_glyph_s *glyph = NULL;
+ FAR nxgl_mxpixel_t *ptr;
+#if CONFIG_EXAMPLES_NX_BPP < 8
+ nxgl_mxpixel_t pixel;
+#endif
+ int bmsize;
+ int row;
+ int col;
+ int ret;
+
+ /* Make sure that there is room for another glyph */
+
+ message("nxeg_renderglyph: ch=%02x\n", ch);
+ if (st->nglyphs < NXTK_MAXKBDCHARS)
+ {
+ /* Allocate the glyph */
+
+ glyph = &st->glyph[st->nglyphs];
+ glyph->code = ch;
+
+ /* Get the dimensions of the glyph */
+
+ glyph->width = bm->metric.width + bm->metric.xoffset;
+ glyph->height = bm->metric.height + bm->metric.yoffset;
+
+ /* Allocate memory to hold the glyph with its offsets */
+
+ glyph->stride = (glyph->width * CONFIG_EXAMPLES_NX_BPP + 7) / 8;
+ bmsize = glyph->stride * glyph->height;
+ glyph->bitmap = (FAR uint8_t *)malloc(bmsize);
+
+ if (glyph->bitmap)
+ {
+ /* Initialize the glyph memory to the background color */
+
+#if CONFIG_EXAMPLES_NX_BPP < 8
+ pixel = st->color[0];
+# if CONFIG_EXAMPLES_NX_BPP == 1
+ /* Pack 1-bit pixels into a 2-bits */
+
+ pixel &= 0x01;
+ pixel = (pixel) << 1 |pixel;
+# endif
+# if CONFIG_EXAMPLES_NX_BPP < 4
+ /* Pack 2-bit pixels into a nibble */
+
+ pixel &= 0x03;
+ pixel = (pixel) << 2 |pixel;
+# endif
+
+ /* Pack 4-bit nibbles into a byte */
+
+ pixel &= 0x0f;
+ pixel = (pixel) << 4 | pixel;
+
+ ptr = (FAR nxgl_mxpixel_t *)glyph->bitmap;
+ for (row = 0; row < glyph->height; row++)
+ {
+ for (col = 0; col < glyph->stride; col++)
+ {
+ /* Transfer the packed bytes into the buffer */
+
+ *ptr++ = pixel;
+ }
+ }
+
+#elif CONFIG_EXAMPLES_NX_BPP == 24
+# error "Additional logic is needed here for 24bpp support"
+
+#else /* CONFIG_EXAMPLES_NX_BPP = {8,16,32} */
+
+ ptr = (FAR nxgl_mxpixel_t *)glyph->bitmap;
+ for (row = 0; row < glyph->height; row++)
+ {
+ /* Just copy the color value into the glyph memory */
+
+ for (col = 0; col < glyph->width; col++)
+ {
+ *ptr++ = st->color[0];
+ }
+ }
+#endif
+
+ /* Then render the glyph into the allocated memory */
+
+ ret = RENDERER((FAR nxgl_mxpixel_t*)glyph->bitmap,
+ glyph->height, glyph->width, glyph->stride,
+ bm, CONFIG_EXAMPLES_NX_FONTCOLOR);
+ if (ret < 0)
+ {
+ /* Actually, the RENDERER never returns a failure */
+
+ message("nxeg_renderglyph: RENDERER failed\n");
+ free(glyph->bitmap);
+ glyph->bitmap = NULL;
+ glyph = NULL;
+ }
+ else
+ {
+ /* Make it permanent */
+
+ st->nglyphs++;
+ }
+ }
+ }
+
+ return glyph;
+}
+
+/****************************************************************************
+ * Name: nxeg_addspace
+ ****************************************************************************/
+
+static inline FAR const struct nxeg_glyph_s *
+nxeg_addspace(FAR struct nxeg_state_s *st, uint8_t ch)
+{
+ FAR struct nxeg_glyph_s *glyph = NULL;
+
+ /* Make sure that there is room for another glyph */
+
+ if (st->nglyphs < NXTK_MAXKBDCHARS)
+ {
+ /* Allocate the NULL glyph */
+
+ glyph = &st->glyph[st->nglyphs];
+ memset(glyph, 0, sizeof(struct nxeg_glyph_s));
+
+ glyph->code = ' ';
+ glyph->width = st->spwidth;
+
+ st->nglyphs++;
+ }
+ return glyph;
+}
+
+/****************************************************************************
+ * Name: nxeg_findglyph
+ ****************************************************************************/
+
+static FAR const struct nxeg_glyph_s *
+nxeg_findglyph(FAR struct nxeg_state_s *st, uint8_t ch)
+{
+ int i;
+
+ /* First, try to find the glyph in the cache of pre-rendered glyphs */
+
+ for (i = 0; i < st->nglyphs; i++)
+ {
+ if (st->glyph[i].code == ch)
+ {
+ return &st->glyph[i];
+ }
+ }
+ return NULL;
+}
+
+/****************************************************************************
+ * Name: nxeg_getglyph
+ ****************************************************************************/
+
+static FAR const struct nxeg_glyph_s *
+nxeg_getglyph(FAR struct nxeg_state_s *st, uint8_t ch)
+{
+ FAR const struct nxeg_glyph_s *glyph;
+ FAR const struct nx_fontbitmap_s *bm;
+
+ /* First, try to find the glyph in the cache of pre-rendered glyphs */
+
+ glyph = nxeg_findglyph(st, ch);
+ if (!glyph)
+ {
+ /* No, it is not cached... Does the code map to a glyph? */
+
+ bm = nxf_getbitmap(ch);
+ if (!bm)
+ {
+ /* No, there is no glyph for this code. Use space */
+
+ glyph = nxeg_findglyph(st, ' ');
+ if (!glyph)
+ {
+ /* There isn't fake glyph for ' ' yet... create one */
+
+ glyph = nxeg_addspace(st, ' ');
+ }
+ }
+ else
+ {
+ glyph = nxeg_renderglyph(st, bm, ch);
+ }
+ }
+ return glyph;
+}
+
+/****************************************************************************
+ * Name: nxeg_addchar
+ ****************************************************************************/
+
+static FAR const struct nxeg_bitmap_s *
+nxeg_addchar(FAR struct nxeg_state_s *st, uint8_t ch)
+{
+ FAR struct nxeg_bitmap_s *bm = NULL;
+ FAR struct nxeg_bitmap_s *bmleft;
+ nxgl_coord_t leftx;
+
+ /* Is there space for another character on the display? */
+
+ if (st->nchars < NXTK_MAXKBDCHARS)
+ {
+ /* Yes, setup the bitmap */
+
+ bm = &st->bm[st->nchars];
+
+ /* Find the matching glyph */
+
+ bm->glyph = nxeg_getglyph(st, ch);
+ if (!bm->glyph)
+ {
+ return NULL;
+ }
+
+ /* Set up the bounds for the bitmap */
+
+ if (st->nchars <= 0)
+ {
+ /* The first character is one space from the left */
+
+ leftx = st->spwidth;
+ }
+ else
+ {
+ /* Otherwise, it is to the left of the preceding char */
+
+ bmleft = &st->bm[st->nchars-1];
+ leftx = bmleft->bounds.pt2.x + 1;
+ }
+
+ bm->bounds.pt1.x = leftx;
+ bm->bounds.pt1.y = 2;
+ bm->bounds.pt2.x = leftx + bm->glyph->width - 1;
+ bm->bounds.pt2.y = 2 + bm->glyph->height - 1;
+
+ st->nchars++;
+ }
+ return bm;
+}
+
+/****************************************************************************
+ * Name: nxeg_addchars
+ ****************************************************************************/
+
+static inline void nxeg_addchars(NXWINDOW hwnd, FAR struct nxeg_state_s *st,
+ uint8_t nch, FAR const uint8_t *ch)
+{
+ FAR const struct nxeg_bitmap_s *bm;
+
+ while (nch--)
+ {
+ bm = nxeg_addchar(st, *ch++);
+ if (bm)
+ {
+ nxeg_fillchar(hwnd, &bm->bounds, bm);
+ }
+ }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxeg_kbdin
+ ****************************************************************************/
+
+void nxeg_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch,
+ FAR void *arg)
+{
+ FAR struct nxeg_state_s *st = (FAR struct nxeg_state_s *)arg;
+ message("nxeg_kbdin%d: hwnd=%p nch=%d\n", st->wnum, hwnd, nch);
+ nxeg_addchars(hwnd, st, nch, ch);
+}
+
+/****************************************************************************
+ * Name: nxeg_tbkbdin
+ ****************************************************************************/
+
+#ifndef CONFIG_EXAMPLES_NX_RAWWINDOWS
+void nxeg_tbkbdin(NXWINDOW hwnd, uint8_t nch, const uint8_t *ch, FAR void *arg)
+{
+ FAR struct nxeg_state_s *st = (FAR struct nxeg_state_s *)arg;
+ message("nxeg_tbkbdin: ERROR -- toolbar should not received keyboard input\n");
+ message("nxeg_tbkbdin%d: hwnd=%p nch=%d\n", st->wnum, hwnd, nch);
+}
+#endif
+
+/****************************************************************************
+ * Name: nxeg_tbkbdin
+ ****************************************************************************/
+
+void nxeg_filltext(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
+ FAR struct nxeg_state_s *st)
+{
+ int i;
+
+ /* Fill each character on the display (Only the characters within rect
+ * will actually be redrawn).
+ */
+
+ for (i = 0; i < st->nchars; i++)
+ {
+ nxeg_fillchar(hwnd, rect, &st->bm[i]);
+ }
+}
+
+#endif /* CONFIG_NX_KBD */
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