--- /dev/null
+/*!
+ * \file
+ * <!--
+ * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 1999 Bernardo Innocenti <bernie@develer.com>
+ * This file is part of DevLib - See README.devlib for information.
+ * -->
+ *
+ * \brief Text graphic routines
+ *
+ * \version $Id$
+ * \author Bernardo Innocenti <bernie@develer.com>
+ * \author Stefano Fedrigo <aleph@develer.com>
+ */
+
+/*#*
+ *#* $Log$
+ *#* Revision 1.1 2005/11/04 18:11:35 bernie
+ *#* Move graphics stuff from mware/ to gfx/.
+ *#*
+ *#* Revision 1.13 2005/11/04 16:20:02 bernie
+ *#* Fix reference to README.devlib in header.
+ *#*
+ *#* Revision 1.12 2005/04/11 19:10:28 bernie
+ *#* Include top-level headers from cfg/ subdir.
+ *#*
+ *#* Revision 1.11 2005/01/20 18:46:31 aleph
+ *#* Fix progmem includes.
+ *#*
+ *#* Revision 1.10 2005/01/08 09:20:12 bernie
+ *#* Really make it work on both architectures.
+ *#*
+ *#* Revision 1.9 2004/12/31 16:44:29 bernie
+ *#* Sanitize for non-Harvard processors.
+ *#*
+ *#* Revision 1.8 2004/11/16 21:16:28 bernie
+ *#* Update to new naming scheme in mware/gfx.c.
+ *#*
+ *#* Revision 1.7 2004/09/20 03:28:28 bernie
+ *#* Fix header.
+ *#*
+ *#* Revision 1.6 2004/09/14 20:57:15 bernie
+ *#* Use debug.h instead of kdebug.h.
+ *#*
+ *#* Revision 1.5 2004/09/06 21:51:26 bernie
+ *#* Extend interface to allow any algorithmic style.
+ *#*
+ *#* Revision 1.2 2004/06/03 11:27:09 bernie
+ *#* Add dual-license information.
+ *#*
+ *#* Revision 1.1 2004/05/23 15:43:16 bernie
+ *#* Import mware modules.
+ *#*
+ *#* Revision 1.17 2004/05/15 16:57:01 aleph
+ *#* Fixes for non-DEBUG build
+ *#*
+ *#* Revision 1.16 2004/04/03 20:42:49 aleph
+ *#* Add text_clear()
+ *#*
+ *#* Revision 1.15 2004/03/24 15:03:45 bernie
+ *#* Use explicit include paths; clean Doxygen comments
+ *#*
+ *#* Revision 1.14 2004/03/19 16:52:28 bernie
+ *#* Move printf() like functions from text.c to text_format.c and add PROGMEM versions.
+ *#*
+ *#* Revision 1.13 2004/03/17 18:23:32 bernie
+ *#* Oops.
+ *#*
+ *#* Revision 1.12 2004/03/17 18:03:22 bernie
+ *#* Make diagnostic message shorter
+ *#*
+ *#* Revision 1.11 2004/03/13 22:52:54 aleph
+ *#* documentation fixes
+ *#*/
+
+#include "gfx.h"
+#include "font.h"
+#include "text.h"
+
+#include <cfg/debug.h>
+
+
+/*!
+ * Flags degli stili algoritmici
+ *
+ * La routine di rendering del testo e' in grado di applicare
+ * delle semplici trasformazioni al font interno per generare
+ * automaticamente degli stili predefiniti (bold, italic,
+ * underline) a partire dal set di caratteri plain.
+ */
+static uint8_t text_styles;
+
+/*! ANSI escape sequences flag: true for ESC state on */
+static bool ansi_mode = false;
+
+
+/*!
+ * Move (imaginary) cursor to column and row specified.
+ * Next text write will start a that row and col.
+ */
+void text_moveto(struct Bitmap *bm, int row, int col)
+{
+ ASSERT(col >= 0);
+ ASSERT(col < bm->width / FONT_WIDTH);
+ ASSERT(row >= 0);
+ ASSERT(row < bm->height / FONT_HEIGHT);
+
+ bm->penX = col * FONT_WIDTH;
+ bm->penY = row * FONT_HEIGHT;
+}
+
+
+/*!
+ * Move (imaginary) cursor to coordinates specified.
+ */
+void text_setcoord(struct Bitmap *bm, int x, int y)
+{
+ bm->penX = x;
+ bm->penY = y;
+}
+
+
+/*!
+ * Render char \a c on Bitmap \a bm
+ */
+static int text_putglyph(char c, struct Bitmap *bm)
+{
+ const uint8_t * PROGMEM glyph; /* font is in progmem */
+ uint8_t glyph_width;
+ uint8_t i;
+ uint8_t *buf;
+
+ /*
+ * Il carattere da stampare viene usato come indice per prelevare
+ * la prima colonna di dots del glyph all'interno del font.
+ */
+ glyph = font + (((unsigned char)c) * FONT_WIDTH);
+ glyph_width = FONT_WIDTH;
+
+ if (text_styles & STYLEF_CONDENSED)
+ --glyph_width;
+
+ if (text_styles & STYLEF_EXPANDED)
+ glyph_width *= 2;
+
+ /* The y coord is rounded at multiples of 8 for simplicity */
+ bm->penY &= ~((coord_t)7);
+
+ /* Check if glyph to write fits in the bitmap */
+ if ((bm->penX < 0) || (bm->penX + glyph_width > bm->width) ||
+ (bm->penY < 0) || (bm->penY + FONT_HEIGHT > bm->height))
+ {
+ DB(kprintf("bad coords x=%d y=%d\n", bm->penX, bm->penY);)
+ return 0;
+ }
+
+ /* Locate position where to write in the raster */
+ buf = bm->raster + bm->penY / 8 * bm->width + bm->penX;
+
+ bm->penX += glyph_width;
+
+ /* If some styles are set */
+ if (text_styles)
+ {
+ uint8_t prev_dots = 0, italic_prev_dots = 0, new_dots;
+ uint8_t dots;
+
+ /* Per ogni colonna di dot del glyph... */
+ for (i = 0; i < glyph_width; ++i)
+ {
+ dots = PGM_READ_CHAR(glyph);
+
+ /* Advance to next column in glyph.
+ * Expand: advances only once every two columns
+ */
+ if (!(text_styles & STYLEF_EXPANDED) || (i & 1))
+ glyph++;
+
+ /* Italic: get lower 4 dots from previous column */
+ if (text_styles & STYLEF_ITALIC)
+ {
+ new_dots = dots;
+ dots = (dots & 0xF0) | italic_prev_dots;
+ italic_prev_dots = new_dots & 0x0F;
+ }
+
+ /* Bold: "or" pixels with the previous column */
+ if (text_styles & STYLEF_BOLD)
+ {
+ new_dots = dots;
+ dots |= prev_dots;
+ prev_dots = new_dots;
+ }
+
+ /* Underlined: turn on base pixel */
+ if (text_styles & STYLEF_UNDERLINE)
+ dots |= 0x80;
+
+ /* Inverted: invert pixels */
+ if (text_styles & STYLEF_INVERT)
+ dots = ~dots;
+
+ /* Output dots */
+ *buf++ = dots;
+ }
+ }
+ else /* No style: fast vanilla copy of glyph to line buffer */
+ while (glyph_width--)
+ *buf++ = PGM_READ_CHAR(glyph++);
+
+ return c;
+}
+
+
+/*!
+ * Render char \c c, with (currently) limited ANSI escapes
+ * emulation support and '\n' for newline.
+ */
+int text_putchar(char c, struct Bitmap *bm)
+{
+ /* Handle ANSI escape sequences */
+ if (ansi_mode)
+ {
+ switch (c)
+ {
+ case ANSI_ESC_CLEARSCREEN:
+ gfx_bitmapClear(bm);
+ bm->penX = 0;
+ bm->penY = 0;
+ text_style(0, STYLEF_MASK);
+ break;
+ DB(default:
+ kprintf("Unknown ANSI esc code: %x\n", c);)
+ }
+ ansi_mode = false;
+ }
+ else if (c == '\033') /* Enter ANSI ESC mode */
+ {
+ ansi_mode = true;
+ }
+ else if (c == '\n') /* Go one line down on a line-feed */
+ {
+ if (bm->penY + FONT_HEIGHT < bm->height)
+ {
+ bm->penY += FONT_HEIGHT;
+ bm->penX = 0;
+ }
+ }
+ else
+ {
+ text_putglyph(c, bm);
+ }
+ return c;
+}
+
+
+/*!
+ * Clear the screen and reset cursor position
+ */
+void text_clear(struct Bitmap *bmp)
+{
+ text_putchar('\x1b', bmp);
+ text_putchar('c', bmp);
+}
+
+
+void text_clearLine(struct Bitmap *bmp, int line)
+{
+ gfx_rectClear(bmp, 0, line * FONT_HEIGHT, bmp->width, (line + 1) * FONT_HEIGHT);
+}
+
+
+/*!
+ * Set/clear algorithmic font style bits.
+ *
+ * \param flags Style flags to set
+ * \param mask Mask of flags to modify
+ * \return Old style flags
+ *
+ * Examples:
+ * Turn on bold, leave other styles alone
+ * \code prt_style(STYLEF_BOLD, STYLEF_BOLD); \endcode
+ *
+ * Turn off bold and turn on italic, leave others as they are
+ * \code prt_style(STYLEF_ITALIC, STYLEF_BOLD | STYLEF_ITALIC); \endcode
+ *
+ * Query current style without chaning it
+ * \code style = prt_style(0, 0); \endcode
+ *
+ * Reset all styles (plain text)
+ * \code prt_style(0, STYLE_MASK); \endcode
+ */
+uint8_t text_style(uint8_t flags, uint8_t mask)
+{
+ uint8_t old = text_styles;
+ text_styles = (text_styles & ~mask) | flags;
+ return old;
+}
projects / bertos.git / blobdiff