/*#*
*#* $Log$
+ *#* Revision 1.8 2006/03/22 09:50:37 bernie
+ *#* Use the same format for fonts and rasters.
+ *#*
+ *#* Revision 1.7 2006/03/20 17:51:55 bernie
+ *#* Cleanups.
+ *#*
+ *#* Revision 1.6 2006/03/13 02:05:54 bernie
+ *#* Mark slow paths as UNLIKELY.
+ *#*
+ *#* Revision 1.5 2006/03/07 22:18:04 bernie
+ *#* Correctly compute text width for prop fonts; Make styles a per-bitmap attribute.
+ *#*
*#* Revision 1.4 2006/02/15 09:10:15 bernie
*#* Implement prop fonts; Fix algo styles.
*#*
#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;
unsigned char index = (unsigned char)c;
/* Check for out of range char and replace with '?' or first char in font. */
- if (index < bm->font->first || index > bm->font->last)
+ if (UNLIKELY(!FONT_HAS_GLYPH(bm->font, index)))
{
kprintf("Illegal char '%c' (0x%02x)\n", index, index);
- if ('?' >= bm->font->first && '?' <= bm->font->last)
+ if (FONT_HAS_GLYPH(bm->font, '?'))
index = '?';
else
index = bm->font->first;
glyph_height = bm->font->height;
// FIXME: for vertical fonts only
- glyph_height_bytes = (glyph_height + 7) / 8;
+ glyph_height_bytes = ROUND_UP2(glyph_height, 8);
if (bm->font->offset)
{
glyph = bm->font->glyph + index * glyph_height_bytes * glyph_width;
}
- if (text_styles & STYLEF_CONDENSED)
- --glyph_width;
-
- if (text_styles & STYLEF_EXPANDED)
- glyph_width *= 2;
-
/* Slow path for styled glyphs */
- if (text_styles)
+ if (UNLIKELY(bm->styles))
{
+ uint8_t styles = bm->styles;
uint8_t prev_dots = 0, italic_prev_dots = 0;
uint8_t dots;
uint8_t row, col;
+ /* This style alone could be handled by the fast path too */
+ if (bm->styles & STYLEF_CONDENSED)
+ --glyph_width;
+
+ if (bm->styles & STYLEF_EXPANDED)
+ glyph_width *= 2;
+
/* Check if glyph fits in the bitmap. */
if ((bm->penX < 0) || (bm->penX + glyph_width > bm->width)
|| (bm->penY < 0) || (bm->penY + glyph_height > bm->height))
uint8_t i;
/* Expanded style: advances only once every two columns. */
- if (text_styles & STYLEF_EXPANDED)
+ if (styles & STYLEF_EXPANDED)
src_col /= 2;
/* Fetch a column of dots from glyph. */
- dots = PGM_READ_CHAR(glyph + src_col * glyph_height_bytes + row);
+ dots = PGM_READ_CHAR(RAST_ADDR(glyph, src_col, row * 8, glyph_width));
/* Italic: get lower 4 dots from previous column */
- if (text_styles & STYLEF_ITALIC)
+ if (styles & STYLEF_ITALIC)
{
uint8_t new_dots = dots;
dots = (dots & 0xF0) | italic_prev_dots;
}
/* Bold: "or" pixels with the previous column */
- if (text_styles & STYLEF_BOLD)
+ if (styles & STYLEF_BOLD)
{
uint8_t new_dots = dots;
dots |= prev_dots;
}
/* Underlined: turn on base pixel */
- if (text_styles & STYLEF_UNDERLINE)
- dots |= 0x80;
+ if ((styles & STYLEF_UNDERLINE)
+ && (row == glyph_height_bytes - 1))
+ dots |= (1 << (glyph_height - row * 8 - 1));
/* Inverted: invert pixels */
- if (text_styles & STYLEF_INVERT)
+ if (styles & STYLEF_INVERT)
dots = ~dots;
/* Output dots */
else
{
/* No style: fast vanilla copy of glyph to bitmap */
- gfx_blitRaster(bm, bm->penX, bm->penY, glyph, glyph_width, glyph_height, glyph_height_bytes);
+ gfx_blitRaster(bm, bm->penX, bm->penY, glyph, glyph_width, glyph_height, glyph_width);
}
/* Update current pen position */
int text_putchar(char c, struct Bitmap *bm)
{
/* Handle ANSI escape sequences */
- if (ansi_mode)
+ if (UNLIKELY(ansi_mode))
{
switch (c)
{
gfx_bitmapClear(bm);
bm->penX = 0;
bm->penY = 0;
- text_style(0, STYLEF_MASK);
+ text_style(bm, 0, STYLEF_MASK);
break;
DB(default:
kprintf("Unknown ANSI esc code: %x\n", c);)
}
-/*!
+/**
* Set/clear algorithmic font style bits.
*
+ * \param bm Pointer to Bitmap to affect.
* \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
+ * \code text_style(bm, 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
+ * \code text_style(bm, STYLEF_ITALIC, STYLEF_BOLD | STYLEF_ITALIC); \endcode
*
* Query current style without chaning it
- * \code style = prt_style(0, 0); \endcode
+ * \code style = text_style(bm, 0, 0); \endcode
*
* Reset all styles (plain text)
- * \code prt_style(0, STYLE_MASK); \endcode
+ * \code text_style(bm, 0, STYLE_MASK); \endcode
*/
-uint8_t text_style(uint8_t flags, uint8_t mask)
+uint8_t text_style(struct Bitmap *bm, uint8_t flags, uint8_t mask)
{
- uint8_t old = text_styles;
- text_styles = (text_styles & ~mask) | flags;
+ uint8_t old = bm->styles;
+ bm->styles = (bm->styles & ~mask) | flags;
return old;
}
projects / bertos.git / blobdiff