iforce2d Chris
Displays distance to start location on OLED screen.
Diff: u8g_font.c
- Revision:
- 0:972874f31c98
diff -r 000000000000 -r 972874f31c98 u8g_font.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/u8g_font.c Wed Mar 07 12:49:14 2018 +0000
@@ -0,0 +1,1502 @@
+/*
+
+ u8g_font.c
+
+ U8G Font High Level Interface
+
+ Universal 8bit Graphics Library
+
+ Copyright (c) 2011, olikraus@gmail.com
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this list
+ of conditions and the following disclaimer.
+
+ * 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.
+
+ 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 HOLDER 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.
+
+
+*/
+
+#include "u8g.h"
+
+/* font api */
+
+/* pointer to the start adress of the glyph, points to progmem area */
+typedef void * u8g_glyph_t;
+
+/* size of the font data structure, there is no struct or class... */
+#define U8G_FONT_DATA_STRUCT_SIZE 17
+
+/*
+ ... instead the fields of the font data structure are accessed directly by offset
+ font information
+ offset
+ 0 font format
+ 1 FONTBOUNDINGBOX width unsigned
+ 2 FONTBOUNDINGBOX height unsigned
+ 3 FONTBOUNDINGBOX x-offset signed
+ 4 FONTBOUNDINGBOX y-offset signed
+ 5 capital A height unsigned
+ 6 start 'A'
+ 8 start 'a'
+ 10 encoding start
+ 11 encoding end
+ 12 descent 'g' negative: below baseline
+ 13 font max ascent
+ 14 font min decent negative: below baseline
+ 15 font xascent
+ 16 font xdecent negative: below baseline
+
+*/
+
+/* use case: What is the width and the height of the minimal box into which string s fints? */
+void u8g_font_GetStrSize(const void *font, const char *s, u8g_uint_t *width, u8g_uint_t *height);
+void u8g_font_GetStrSizeP(const void *font, const char *s, u8g_uint_t *width, u8g_uint_t *height);
+
+/* use case: lower left edge of a minimal box is known, what is the correct x, y position for the string draw procedure */
+void u8g_font_AdjustXYToDraw(const void *font, const char *s, u8g_uint_t *x, u8g_uint_t *y);
+void u8g_font_AdjustXYToDrawP(const void *font, const char *s, u8g_uint_t *x, u8g_uint_t *y);
+
+/* use case: Baseline origin known, return minimal box */
+void u8g_font_GetStrMinBox(u8g_t *u8g, const void *font, const char *s, u8g_uint_t *x, u8g_uint_t *y, u8g_uint_t *width, u8g_uint_t *height);
+
+/* procedures */
+
+/*========================================================================*/
+/* low level byte and word access */
+
+/* removed NOINLINE, because it leads to smaller code, might also be faster */
+//static uint8_t u8g_font_get_byte(const u8g_fntpgm_uint8_t *font, uint8_t offset) U8G_NOINLINE;
+static uint8_t u8g_font_get_byte(const u8g_fntpgm_uint8_t *font, uint8_t offset)
+{
+ font += offset;
+ return u8g_pgm_read( (u8g_pgm_uint8_t *)font );
+}
+
+static uint16_t u8g_font_get_word(const u8g_fntpgm_uint8_t *font, uint8_t offset) U8G_NOINLINE;
+static uint16_t u8g_font_get_word(const u8g_fntpgm_uint8_t *font, uint8_t offset)
+{
+ uint16_t pos;
+ font += offset;
+ pos = u8g_pgm_read( (u8g_pgm_uint8_t *)font );
+ font++;
+ pos <<= 8;
+ pos += u8g_pgm_read( (u8g_pgm_uint8_t *)font);
+ return pos;
+}
+
+/*========================================================================*/
+/* direct access on the font */
+
+static uint8_t u8g_font_GetFormat(const u8g_fntpgm_uint8_t *font) U8G_NOINLINE;
+static uint8_t u8g_font_GetFormat(const u8g_fntpgm_uint8_t *font)
+{
+ return u8g_font_get_byte(font, 0);
+}
+
+static uint8_t u8g_font_GetFontGlyphStructureSize(const u8g_fntpgm_uint8_t *font) U8G_NOINLINE;
+static uint8_t u8g_font_GetFontGlyphStructureSize(const u8g_fntpgm_uint8_t *font)
+{
+ switch(u8g_font_GetFormat(font))
+ {
+ case 0: return 6;
+ case 1: return 3;
+ case 2: return 6;
+ }
+ return 3;
+}
+
+static uint8_t u8g_font_GetBBXWidth(const void *font)
+{
+ return u8g_font_get_byte(font, 1);
+}
+
+static uint8_t u8g_font_GetBBXHeight(const void *font)
+{
+ return u8g_font_get_byte(font, 2);
+}
+
+static int8_t u8g_font_GetBBXOffX(const void *font)
+{
+ return u8g_font_get_byte(font, 3);
+}
+
+static int8_t u8g_font_GetBBXOffY(const void *font)
+{
+ return u8g_font_get_byte(font, 4);
+}
+
+uint8_t u8g_font_GetCapitalAHeight(const void *font)
+{
+ return u8g_font_get_byte(font, 5);
+}
+
+uint16_t u8g_font_GetEncoding65Pos(const void *font) U8G_NOINLINE;
+uint16_t u8g_font_GetEncoding65Pos(const void *font)
+{
+ return u8g_font_get_word(font, 6);
+}
+
+uint16_t u8g_font_GetEncoding97Pos(const void *font) U8G_NOINLINE;
+uint16_t u8g_font_GetEncoding97Pos(const void *font)
+{
+ return u8g_font_get_word(font, 8);
+}
+
+uint8_t u8g_font_GetFontStartEncoding(const void *font)
+{
+ return u8g_font_get_byte(font, 10);
+}
+
+uint8_t u8g_font_GetFontEndEncoding(const void *font)
+{
+ return u8g_font_get_byte(font, 11);
+}
+
+int8_t u8g_font_GetLowerGDescent(const void *font)
+{
+ return u8g_font_get_byte(font, 12);
+}
+
+int8_t u8g_font_GetFontAscent(const void *font)
+{
+ return u8g_font_get_byte(font, 13);
+}
+
+int8_t u8g_font_GetFontDescent(const void *font)
+{
+ return u8g_font_get_byte(font, 14);
+}
+
+int8_t u8g_font_GetFontXAscent(const void *font)
+{
+ return u8g_font_get_byte(font, 15);
+}
+
+int8_t u8g_font_GetFontXDescent(const void *font)
+{
+ return u8g_font_get_byte(font, 16);
+}
+
+
+/* return the data start for a font and the glyph pointer */
+static uint8_t *u8g_font_GetGlyphDataStart(const void *font, u8g_glyph_t g)
+{
+ return ((u8g_fntpgm_uint8_t *)g) + u8g_font_GetFontGlyphStructureSize(font);
+}
+
+/* calculate the overall length of the font, only used to create the picture for the google wiki */
+size_t u8g_font_GetSize(const void *font)
+{
+ uint8_t *p = (uint8_t *)(font);
+ uint8_t font_format = u8g_font_GetFormat(font);
+ uint8_t data_structure_size = u8g_font_GetFontGlyphStructureSize(font);
+ uint8_t start, end;
+ uint8_t i;
+ uint8_t mask = 255;
+
+ start = u8g_font_GetFontStartEncoding(font);
+ end = u8g_font_GetFontEndEncoding(font);
+
+ if ( font_format == 1 )
+ mask = 15;
+
+ p += U8G_FONT_DATA_STRUCT_SIZE; /* skip font general information */
+
+ i = start;
+ for(;;)
+ {
+ if ( u8g_pgm_read((u8g_pgm_uint8_t *)(p)) == 255 )
+ {
+ p += 1;
+ }
+ else
+ {
+ p += u8g_pgm_read( ((u8g_pgm_uint8_t *)(p)) + 2 ) & mask;
+ p += data_structure_size;
+ }
+ if ( i == end )
+ break;
+ i++;
+ }
+
+ return p - (uint8_t *)font;
+}
+
+/*========================================================================*/
+/* u8g interface, font access */
+
+uint8_t u8g_GetFontBBXWidth(u8g_t *u8g)
+{
+ return u8g_font_GetBBXWidth(u8g->font);
+}
+
+uint8_t u8g_GetFontBBXHeight(u8g_t *u8g)
+{
+ return u8g_font_GetBBXHeight(u8g->font);
+}
+
+int8_t u8g_GetFontBBXOffX(u8g_t *u8g) U8G_NOINLINE;
+int8_t u8g_GetFontBBXOffX(u8g_t *u8g)
+{
+ return u8g_font_GetBBXOffX(u8g->font);
+}
+
+int8_t u8g_GetFontBBXOffY(u8g_t *u8g) U8G_NOINLINE;
+int8_t u8g_GetFontBBXOffY(u8g_t *u8g)
+{
+ return u8g_font_GetBBXOffY(u8g->font);
+}
+
+uint8_t u8g_GetFontCapitalAHeight(u8g_t *u8g) U8G_NOINLINE;
+uint8_t u8g_GetFontCapitalAHeight(u8g_t *u8g)
+{
+ return u8g_font_GetCapitalAHeight(u8g->font);
+}
+
+/*========================================================================*/
+/* glyph handling */
+
+static void u8g_CopyGlyphDataToCache(u8g_t *u8g, u8g_glyph_t g)
+{
+ uint8_t tmp;
+ switch( u8g_font_GetFormat(u8g->font) )
+ {
+ case 0:
+ case 2:
+ /*
+ format 0
+ glyph information
+ offset
+ 0 BBX width unsigned
+ 1 BBX height unsigned
+ 2 data size unsigned (BBX width + 7)/8 * BBX height
+ 3 DWIDTH signed
+ 4 BBX xoffset signed
+ 5 BBX yoffset signed
+ byte 0 == 255 indicates empty glyph
+ */
+ u8g->glyph_width = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 0 );
+ u8g->glyph_height = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 1 );
+ u8g->glyph_dx = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 3 );
+ u8g->glyph_x = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 4 );
+ u8g->glyph_y = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 5 );
+ break;
+ case 1:
+ default:
+ /*
+format 1
+ 0 BBX xoffset signed --> upper 4 Bit
+ 0 BBX yoffset signed --> lower 4 Bit
+ 1 BBX width unsigned --> upper 4 Bit
+ 1 BBX height unsigned --> lower 4 Bit
+ 2 data size unsigned -(BBX width + 7)/8 * BBX height --> lower 4 Bit
+ 2 DWIDTH signed --> upper 4 Bit
+ byte 0 == 255 indicates empty glyph
+ */
+
+ tmp = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 0 );
+ u8g->glyph_y = tmp & 15;
+ u8g->glyph_y-=2;
+ tmp >>= 4;
+ u8g->glyph_x = tmp;
+
+ tmp = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 1 );
+ u8g->glyph_height = tmp & 15;
+ tmp >>= 4;
+ u8g->glyph_width = tmp;
+
+ tmp = u8g_pgm_read( ((u8g_pgm_uint8_t *)g) + 2 );
+ tmp >>= 4;
+ u8g->glyph_dx = tmp;
+
+
+ break;
+ }
+}
+
+//void u8g_FillEmptyGlyphCache(u8g_t *u8g) U8G_NOINLINE;
+static void u8g_FillEmptyGlyphCache(u8g_t *u8g)
+{
+ u8g->glyph_dx = 0;
+ u8g->glyph_width = 0;
+ u8g->glyph_height = 0;
+ u8g->glyph_x = 0;
+ u8g->glyph_y = 0;
+}
+
+/*
+ Find (with some speed optimization) and return a pointer to the glyph data structure
+ Also uncompress (format 1) and copy the content of the data structure to the u8g structure
+*/
+u8g_glyph_t u8g_GetGlyph(u8g_t *u8g, uint8_t requested_encoding)
+{
+ uint8_t *p = (uint8_t *)(u8g->font);
+ uint8_t font_format = u8g_font_GetFormat(u8g->font);
+ uint8_t data_structure_size = u8g_font_GetFontGlyphStructureSize(u8g->font);
+ uint8_t start, end;
+ uint16_t pos;
+ uint8_t i;
+ uint8_t mask = 255;
+
+ if ( font_format == 1 )
+ mask = 15;
+
+ start = u8g_font_GetFontStartEncoding(u8g->font);
+ end = u8g_font_GetFontEndEncoding(u8g->font);
+
+ pos = u8g_font_GetEncoding97Pos(u8g->font);
+ if ( requested_encoding >= 97 && pos > 0 )
+ {
+ p+= pos;
+ start = 97;
+ }
+ else
+ {
+ pos = u8g_font_GetEncoding65Pos(u8g->font);
+ if ( requested_encoding >= 65 && pos > 0 )
+ {
+ p+= pos;
+ start = 65;
+ }
+ else
+ p += U8G_FONT_DATA_STRUCT_SIZE; /* skip font general information */
+ }
+
+ if ( requested_encoding > end )
+ {
+ u8g_FillEmptyGlyphCache(u8g);
+ return NULL; /* not found */
+ }
+
+ i = start;
+ if ( i <= end )
+ {
+ for(;;)
+ {
+ if ( u8g_pgm_read((u8g_pgm_uint8_t *)(p)) == 255 )
+ {
+ p += 1;
+ }
+ else
+ {
+ if ( i == requested_encoding )
+ {
+ u8g_CopyGlyphDataToCache(u8g, p);
+ return p;
+ }
+ p += u8g_pgm_read( ((u8g_pgm_uint8_t *)(p)) + 2 ) & mask;
+ p += data_structure_size;
+ }
+ if ( i == end )
+ break;
+ i++;
+ }
+ }
+
+ u8g_FillEmptyGlyphCache(u8g);
+
+ return NULL;
+}
+
+uint8_t u8g_IsGlyph(u8g_t *u8g, uint8_t requested_encoding)
+{
+ if ( u8g_GetGlyph(u8g, requested_encoding) != NULL )
+ return 1;
+ return 0;
+}
+
+int8_t u8g_GetGlyphDeltaX(u8g_t *u8g, uint8_t requested_encoding)
+{
+ if ( u8g_GetGlyph(u8g, requested_encoding) == NULL )
+ return 0; /* should never happen, so return something */
+ return u8g->glyph_dx;
+}
+
+
+/*========================================================================*/
+/* glyph drawing procedures */
+
+#ifdef OBSOLETE
+/*
+ Draw a glyph
+ x,y: left baseline position of the glyph
+*/
+int8_t u8g_DrawGlyphDir(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t encoding)
+{
+ u8g_glyph_t g;
+ uint8_t w, h, i, j;
+ const u8g_pgm_uint8_t *data;
+ uint8_t bytes_per_line;
+ u8g_uint_t ix, iy;
+
+ g = u8g_GetGlyph(u8g, encoding);
+ if ( g == NULL )
+ return 0;
+ w = u8g->glyph_width;
+ h = u8g->glyph_height;
+
+ bytes_per_line = w;
+ bytes_per_line += 7;
+ bytes_per_line /= 8;
+
+ data = u8g_font_GetGlyphDataStart(u8g->font, g);
+
+ switch(dir)
+ {
+ case 0:
+ x += u8g->glyph_x;
+ y -= u8g->glyph_y;
+ y--;
+ //u8g_DrawFrame(u8g, x, y-h+1, w, h);
+ if ( u8g_IsBBXIntersection(u8g, x, y-h+1, w, h) == 0 )
+ return u8g->glyph_dx;
+
+ iy = y;
+ iy -= h;
+ iy++;
+
+ for( j = 0; j < h; j++ )
+ {
+ ix = x;
+ for( i = 0; i < bytes_per_line; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
+ data++;
+ ix+=8;
+ }
+ iy++;
+ }
+ break;
+ case 1:
+ x += u8g->glyph_y;
+ x++;
+ y += u8g->glyph_x;
+ //printf("enc %d, dir %d, x %d, y %d, w %d, h %d\n", encoding, dir, x, y, w, h);
+ //u8g_DrawFrame(u8g, x, y, h, w);
+ if ( u8g_IsBBXIntersection(u8g, x, y, h, w) == 0 )
+ return u8g->glyph_dx;
+
+ ix = x;
+ ix += h;
+ ix--;
+ for( j = 0; j < h; j++ )
+ {
+ iy = y;
+ for( i = 0; i < bytes_per_line; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
+ data++;
+ iy+=8;
+ }
+ ix--;
+ }
+ break;
+ case 2:
+ x -= u8g->glyph_x;
+ y += u8g->glyph_y;
+ y++;
+ if ( u8g_IsBBXIntersection(u8g, x-w-1, y, w, h) == 0 )
+ return u8g->glyph_dx;
+
+ iy = y;
+ iy += h;
+ iy--;
+ for( j = 0; j < h; j++ )
+ {
+ ix = x;
+ for( i = 0; i < bytes_per_line; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
+ data++;
+ ix-=8;
+ }
+ iy--;
+ }
+ break;
+ case 3:
+ x -= u8g->glyph_y;
+ x--;
+ y -= u8g->glyph_x;
+
+ if ( u8g_IsBBXIntersection(u8g, x-h-1, y-w-1, h, w) == 0 )
+ return u8g->glyph_dx;
+
+ ix = x;
+ ix -= h;
+ ix++;
+
+ for( j = 0; j < h; j++ )
+ {
+ iy = y;
+ for( i = 0; i < bytes_per_line; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, dir, u8g_pgm_read(data));
+ data++;
+ iy-=8;
+ }
+ ix++;
+ }
+ break;
+ }
+ return u8g->glyph_dx;
+}
+#endif
+
+int8_t u8g_draw_glyph(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ const u8g_pgm_uint8_t *data;
+ uint8_t w, h;
+ uint8_t i, j;
+ u8g_uint_t ix, iy;
+
+ {
+ u8g_glyph_t g = u8g_GetGlyph(u8g, encoding);
+ if ( g == NULL )
+ return 0;
+ data = u8g_font_GetGlyphDataStart(u8g->font, g);
+ }
+
+ w = u8g->glyph_width;
+ h = u8g->glyph_height;
+
+ x += u8g->glyph_x;
+ y -= u8g->glyph_y;
+ y--;
+
+ if ( u8g_IsBBXIntersection(u8g, x, y-h+1, w, h) == 0 )
+ return u8g->glyph_dx;
+
+ /* now, w is reused as bytes per line */
+ w += 7;
+ w /= 8;
+
+ iy = y;
+ iy -= h;
+ iy++;
+
+ for( j = 0; j < h; j++ )
+ {
+ ix = x;
+ for( i = 0; i < w; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, 0, u8g_pgm_read(data));
+ data++;
+ ix+=8;
+ }
+ iy++;
+ }
+ return u8g->glyph_dx;
+}
+
+int8_t u8g_DrawGlyph(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ y += u8g->font_calc_vref(u8g);
+ return u8g_draw_glyph(u8g, x, y, encoding);
+}
+
+int8_t u8g_draw_glyph90(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ const u8g_pgm_uint8_t *data;
+ uint8_t w, h;
+ uint8_t i, j;
+ u8g_uint_t ix, iy;
+
+ {
+ u8g_glyph_t g = u8g_GetGlyph(u8g, encoding);
+ if ( g == NULL )
+ return 0;
+ data = u8g_font_GetGlyphDataStart(u8g->font, g);
+ }
+
+ w = u8g->glyph_width;
+ h = u8g->glyph_height;
+
+ x += u8g->glyph_y;
+ x++;
+ y += u8g->glyph_x;
+
+ if ( u8g_IsBBXIntersection(u8g, x, y, h, w) == 0 )
+ return u8g->glyph_dx;
+
+ /* now, w is reused as bytes per line */
+ w += 7;
+ w /= 8;
+
+ ix = x;
+ ix += h;
+ ix--;
+ for( j = 0; j < h; j++ )
+ {
+ iy = y;
+ for( i = 0; i < w; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, 1, u8g_pgm_read(data));
+ data++;
+ iy+=8;
+ }
+ ix--;
+ }
+ return u8g->glyph_dx;
+}
+
+int8_t u8g_DrawGlyph90(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ x -= u8g->font_calc_vref(u8g);
+ return u8g_draw_glyph90(u8g, x, y, encoding);
+}
+
+
+int8_t u8g_draw_glyph180(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ const u8g_pgm_uint8_t *data;
+ uint8_t w, h;
+ uint8_t i, j;
+ u8g_uint_t ix, iy;
+
+ {
+ u8g_glyph_t g = u8g_GetGlyph(u8g, encoding);
+ if ( g == NULL )
+ return 0;
+ data = u8g_font_GetGlyphDataStart(u8g->font, g);
+ }
+
+ w = u8g->glyph_width;
+ h = u8g->glyph_height;
+
+ x -= u8g->glyph_x;
+ y += u8g->glyph_y;
+ y++;
+
+ if ( u8g_IsBBXIntersection(u8g, x-(w-1), y, w, h) == 0 )
+ return u8g->glyph_dx;
+
+ /* now, w is reused as bytes per line */
+ w += 7;
+ w /= 8;
+
+ iy = y;
+ iy += h;
+ iy--;
+ for( j = 0; j < h; j++ )
+ {
+ ix = x;
+ for( i = 0; i < w; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, 2, u8g_pgm_read(data));
+ data++;
+ ix-=8;
+ }
+ iy--;
+ }
+ return u8g->glyph_dx;
+}
+
+int8_t u8g_DrawGlyph180(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ y -= u8g->font_calc_vref(u8g);
+ return u8g_draw_glyph180(u8g, x, y, encoding);
+}
+
+
+int8_t u8g_draw_glyph270(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ const u8g_pgm_uint8_t *data;
+ uint8_t w, h;
+ uint8_t i, j;
+ u8g_uint_t ix, iy;
+
+ {
+ u8g_glyph_t g = u8g_GetGlyph(u8g, encoding);
+ if ( g == NULL )
+ return 0;
+ data = u8g_font_GetGlyphDataStart(u8g->font, g);
+ }
+
+ w = u8g->glyph_width;
+ h = u8g->glyph_height;
+
+ x -= u8g->glyph_y;
+ x--;
+ y -= u8g->glyph_x;
+
+ if ( u8g_IsBBXIntersection(u8g, x-(h-1), y-(w-1), h, w) == 0 )
+ return u8g->glyph_dx;
+
+
+ /* now, w is reused as bytes per line */
+ w += 7;
+ w /= 8;
+
+ ix = x;
+ ix -= h;
+ ix++;
+
+ for( j = 0; j < h; j++ )
+ {
+ iy = y;
+ for( i = 0; i < w; i++ )
+ {
+ u8g_Draw8Pixel(u8g, ix, iy, 3, u8g_pgm_read(data));
+ data++;
+ iy-=8;
+ }
+ ix++;
+ }
+ return u8g->glyph_dx;
+}
+
+int8_t u8g_DrawGlyph270(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ x += u8g->font_calc_vref(u8g);
+ return u8g_draw_glyph270(u8g, x, y, encoding);
+}
+
+
+
+#ifdef OBSOLETE
+/*
+ Draw a glyph
+ x,y: lower left corner of the font bounding box
+*/
+int8_t u8g_DrawGlyphFontBBX(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t encoding)
+{
+ /* TODO: apply "dir" */
+ x -= u8g_GetFontBBXOffX(u8g);
+ y += u8g_GetFontBBXOffY(u8g);
+ return u8g_DrawGlyphDir(u8g, x, y, dir, encoding);
+}
+#endif
+
+/*========================================================================*/
+/* string drawing procedures */
+
+
+u8g_uint_t u8g_DrawStr(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const char *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ //u8g_uint_t u8g_GetStrWidth(u8g, s);
+ //u8g_font_GetFontAscent(u8g->font)-u8g_font_GetFontDescent(u8g->font);
+
+ y += u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_draw_glyph(u8g, x, y, *s);
+ x += d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStr90(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const char *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ x -= u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_draw_glyph90(u8g, x, y, *s);
+ y += d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStr180(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const char *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ y -= u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_draw_glyph180(u8g, x, y, *s);
+ x -= d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStr270(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const char *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ x += u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_draw_glyph270(u8g, x, y, *s);
+ y -= d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStrDir(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, const char *s)
+{
+ switch(dir)
+ {
+ case 0:
+ return u8g_DrawStr(u8g, x, y, s);
+ case 1:
+ return u8g_DrawStr90(u8g, x, y, s);
+ case 2:
+ return u8g_DrawStr180(u8g, x, y, s);
+ case 3:
+ return u8g_DrawStr270(u8g, x, y, s);
+ }
+ return 0;
+}
+
+u8g_uint_t u8g_DrawStrP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const u8g_pgm_uint8_t *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+ uint8_t c;
+
+ y += u8g->font_calc_vref(u8g);
+
+ for(;;)
+ {
+ c = u8g_pgm_read(s);
+ if ( c == '\0' )
+ break;
+ d = u8g_draw_glyph(u8g, x, y, c);
+ x += d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStr90P(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const u8g_pgm_uint8_t *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ x -= u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_DrawGlyph90(u8g, x, y, u8g_pgm_read(s));
+ y += d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStr180P(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const u8g_pgm_uint8_t *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ y -= u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_DrawGlyph180(u8g, x, y, u8g_pgm_read(s));
+ x -= d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStr270P(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const u8g_pgm_uint8_t *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ x += u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_DrawGlyph270(u8g, x, y, u8g_pgm_read(s));
+ y -= d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+
+u8g_uint_t u8g_DrawStrFontBBX(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, const char *s)
+{
+ x -= u8g_GetFontBBXOffX(u8g);
+ y += u8g_GetFontBBXOffY(u8g);
+ return u8g_DrawStrDir(u8g, x, y, dir, s);
+}
+
+/* still used by picgen.c, dir argument is ignored */
+int8_t u8g_DrawGlyphFontBBX(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t dir, uint8_t encoding)
+{
+ x -= u8g_GetFontBBXOffX(u8g);
+ y += u8g_GetFontBBXOffY(u8g);
+ u8g_draw_glyph(u8g, x, y, encoding);
+ return 0;
+}
+
+
+/*========================================================================*/
+/* set ascent/descent for reference point calculation */
+
+void u8g_UpdateRefHeight(u8g_t *u8g)
+{
+ uint16_t ls;
+ if ( u8g->font == NULL )
+ return;
+ if ( u8g->font_height_mode == U8G_FONT_HEIGHT_MODE_TEXT )
+ {
+ u8g->font_ref_ascent = u8g_font_GetCapitalAHeight(u8g->font);
+ u8g->font_ref_descent = u8g_font_GetLowerGDescent(u8g->font);
+ }
+ else if ( u8g->font_height_mode == U8G_FONT_HEIGHT_MODE_XTEXT )
+ {
+ u8g->font_ref_ascent = u8g_font_GetFontXAscent(u8g->font);
+ u8g->font_ref_descent = u8g_font_GetFontXDescent(u8g->font);
+ }
+ else
+ {
+ u8g->font_ref_ascent = u8g_font_GetFontAscent(u8g->font);
+ u8g->font_ref_descent = u8g_font_GetFontDescent(u8g->font);
+ }
+
+ ls = u8g->font_ref_ascent - u8g->font_ref_descent;
+ if ( u8g->font_line_spacing_factor != 64 )
+ {
+ ls &= 255;
+ ls *= u8g->font_line_spacing_factor;
+ ls >>= 6;
+ }
+ u8g->line_spacing = ls;
+}
+
+void u8g_SetFontRefHeightText(u8g_t *u8g)
+{
+ u8g->font_height_mode = U8G_FONT_HEIGHT_MODE_TEXT;
+ u8g_UpdateRefHeight(u8g);
+}
+
+void u8g_SetFontRefHeightExtendedText(u8g_t *u8g)
+{
+ u8g->font_height_mode = U8G_FONT_HEIGHT_MODE_XTEXT;
+ u8g_UpdateRefHeight(u8g);
+}
+
+
+void u8g_SetFontRefHeightAll(u8g_t *u8g)
+{
+ u8g->font_height_mode = U8G_FONT_HEIGHT_MODE_ALL;
+ u8g_UpdateRefHeight(u8g);
+}
+
+/* factor = 64: linespaceing == ascent and descent */
+void u8g_SetFontLineSpacingFactor(u8g_t *u8g, uint8_t factor)
+{
+ u8g->font_line_spacing_factor = factor;
+ u8g_UpdateRefHeight(u8g);
+}
+
+
+
+/*========================================================================*/
+/* callback procedures to correct the y position */
+
+u8g_uint_t u8g_font_calc_vref_font(u8g_t *u8g)
+{
+ return 0;
+}
+
+void u8g_SetFontPosBaseline(u8g_t *u8g)
+{
+ u8g->font_calc_vref = u8g_font_calc_vref_font;
+}
+
+
+u8g_uint_t u8g_font_calc_vref_bottom(u8g_t *u8g)
+{
+ /* y += (u8g_uint_t)(u8g_int_t)(u8g->font_ref_descent); */
+ return (u8g_uint_t)(u8g_int_t)(u8g->font_ref_descent);
+}
+
+void u8g_SetFontPosBottom(u8g_t *u8g)
+{
+ u8g->font_calc_vref = u8g_font_calc_vref_bottom;
+}
+
+u8g_uint_t u8g_font_calc_vref_top(u8g_t *u8g)
+{
+ u8g_uint_t tmp;
+ /* reference pos is one pixel above the upper edge of the reference glyph */
+
+ /*
+ y += (u8g_uint_t)(u8g_int_t)(u8g->font_ref_ascent);
+ y++;
+ */
+ tmp = (u8g_uint_t)(u8g_int_t)(u8g->font_ref_ascent);
+ tmp++;
+ return tmp;
+}
+
+void u8g_SetFontPosTop(u8g_t *u8g)
+{
+ u8g->font_calc_vref = u8g_font_calc_vref_top;
+}
+
+u8g_uint_t u8g_font_calc_vref_center(u8g_t *u8g)
+{
+ int8_t tmp;
+ tmp = u8g->font_ref_ascent;
+ tmp -= u8g->font_ref_descent;
+ tmp /= 2;
+ tmp += u8g->font_ref_descent;
+ /* y += (u8g_uint_t)(u8g_int_t)(tmp); */
+ return tmp;
+}
+
+void u8g_SetFontPosCenter(u8g_t *u8g)
+{
+ u8g->font_calc_vref = u8g_font_calc_vref_center;
+}
+
+/*========================================================================*/
+/* string pixel width calculation */
+
+char u8g_font_get_char(const void *s)
+{
+ return *(const char *)(s);
+}
+
+char u8g_font_get_charP(const void *s)
+{
+ return u8g_pgm_read(s);
+}
+
+typedef char (*u8g_font_get_char_fn)(const void *s);
+
+
+u8g_uint_t u8g_font_calc_str_pixel_width(u8g_t *u8g, const char *s, u8g_font_get_char_fn get_char )
+{
+ u8g_uint_t w;
+ uint8_t enc;
+
+ /* reset the total minimal width to zero, this will be expanded during calculation */
+ w = 0;
+
+ enc = get_char(s);
+
+ /* check for empty string, width is already 0 */
+ if ( enc == '\0' )
+ {
+ return w;
+ }
+
+ /* get the glyph information of the first char. This must be valid, because we already checked for the empty string */
+ /* if *s is not inside the font, then the cached parameters of the glyph are all zero */
+ u8g_GetGlyph(u8g, enc);
+
+ /* strlen(s) == 1: width = width(s[0]) */
+ /* strlen(s) == 2: width = - offx(s[0]) + deltax(s[0]) + offx(s[1]) + width(s[1]) */
+ /* strlen(s) == 3: width = - offx(s[0]) + deltax(s[0]) + deltax(s[1]) + offx(s[2]) + width(s[2]) */
+
+ /* assume that the string has size 2 or more, than start with negative offset-x */
+ /* for string with size 1, this will be nullified after the loop */
+ w = -u8g->glyph_x;
+ for(;;)
+ {
+
+ /* check and stop if the end of the string is reached */
+ s++;
+ if ( get_char(s) == '\0' )
+ break;
+
+ /* if there are still more characters, add the delta to the next glyph */
+ w += u8g->glyph_dx;
+
+ /* store the encoding in a local variable, used also after the for(;;) loop */
+ enc = get_char(s);
+
+ /* load the next glyph information */
+ u8g_GetGlyph(u8g, enc);
+ }
+
+ /* finally calculate the width of the last char */
+ /* here is another exception, if the last char is a black, use the dx value instead */
+ if ( enc != ' ' )
+ {
+ /* if g was not updated in the for loop (strlen() == 1), then the initial offset x gets removed */
+ w += u8g->glyph_width;
+ w += u8g->glyph_x;
+ }
+ else
+ {
+ w += u8g->glyph_dx;
+ }
+
+
+ return w;
+}
+
+u8g_uint_t u8g_GetStrPixelWidth(u8g_t *u8g, const char *s)
+{
+ return u8g_font_calc_str_pixel_width(u8g, s, u8g_font_get_char);
+}
+
+u8g_uint_t u8g_GetStrPixelWidthP(u8g_t *u8g, const u8g_pgm_uint8_t *s)
+{
+ return u8g_font_calc_str_pixel_width(u8g, (const char *)s, u8g_font_get_charP);
+}
+
+int8_t u8g_GetStrX(u8g_t *u8g, const char *s)
+{
+ u8g_GetGlyph(u8g, *s);
+ return u8g->glyph_x;
+}
+
+int8_t u8g_GetStrXP(u8g_t *u8g, const u8g_pgm_uint8_t *s)
+{
+ u8g_GetGlyph(u8g, u8g_pgm_read(s));
+ return u8g->glyph_x;
+}
+
+/*========================================================================*/
+/* string width calculation */
+
+u8g_uint_t u8g_GetStrWidth(u8g_t *u8g, const char *s)
+{
+ u8g_uint_t w;
+ uint8_t encoding;
+
+ /* reset the total width to zero, this will be expanded during calculation */
+ w = 0;
+
+ for(;;)
+ {
+ encoding = *s;
+ if ( encoding == 0 )
+ break;
+
+ /* load glyph information */
+ u8g_GetGlyph(u8g, encoding);
+ w += u8g->glyph_dx;
+
+ /* goto next char */
+ s++;
+ }
+
+ return w;
+}
+
+
+u8g_uint_t u8g_GetStrWidthP(u8g_t *u8g, const u8g_pgm_uint8_t *s)
+{
+ u8g_uint_t w;
+ uint8_t encoding;
+
+ /* reset the total width to zero, this will be expanded during calculation */
+ w = 0;
+
+ for(;;)
+ {
+ encoding = u8g_pgm_read(s);
+ if ( encoding == 0 )
+ break;
+
+ /* load glyph information */
+ u8g_GetGlyph(u8g, encoding);
+ w += u8g->glyph_dx;
+
+ /* goto next char */
+ s++;
+ }
+
+ return w;
+}
+
+
+/*========================================================================*/
+/* calculation of font/glyph/string characteristics */
+
+
+/*
+ Description:
+ Calculate parameter for the minimal bounding box on a given string
+ Output
+ buf->y_min extend of the lower left edge if the string below (y_min<0) or above (y_min>0) baseline (descent)
+ buf->y_max extend of the upper left edge if the string below (y_min<0) or above (y_min>0) baseline (ascent)
+ buf->w the width of the string
+*/
+struct u8g_str_size_struct
+{
+ int8_t y_min; /* descent */
+ int8_t y_max; /* ascent */
+ int8_t x, y; /* the reference point of the font (negated!) */
+ u8g_uint_t w; /* width of the overall string */
+};
+typedef struct u8g_str_size_struct u8g_str_size_t;
+
+static void u8g_font_calc_str_min_box(u8g_t *u8g, const char *s, u8g_str_size_t *buf)
+{
+ /* u8g_glyph_t g; */
+ int8_t tmp;
+
+ /* reset the total minimal width to zero, this will be expanded during calculation */
+ buf->w = 0;
+
+ /* check for empty string, width is already 0, but also reset y_min and y_max to 0 */
+ if ( *s == '\0' )
+ {
+ buf->y_min = 0;
+ buf->y_max = 0;
+ buf->x = 0;
+ buf->y = 0;
+ return;
+ }
+
+ /* reset y_min to the largest possible value. Later we search for the smallest value */
+ /* y_min contains the position [pixel] of the lower left edge of the glyph above (y_min>0) or below (y_min<0) baseline */
+ buf->y_min = 127;
+ /* reset y_max to the smallest possible value. Later we search for the highest value */
+ /* y_max contains the position [pixel] of the upper left edge of the glyph above (y_max>0) or below (y_max<0) baseline */
+ buf->y_max = -128;
+
+ /* get the glyph information of the first char. This must be valid, because we already checked for the empty string */
+ u8g_GetGlyph(u8g, *s);
+
+ /* strlen(s) == 1: width = width(s[0]) */
+ /* strlen(s) == 2: width = - offx(s[0]) + deltax(s[0]) + offx(s[1]) + width(s[1]) */
+ /* strlen(s) == 3: width = - offx(s[0]) + deltax(s[0]) + deltax(s[1]) + offx(s[2]) + width(s[2]) */
+
+ /* assume that the string has size 2 or more, than start with negative offset-x */
+ /* for string with size 1, this will be nullified after the loop */
+ // buf->w = - u8g_font_GetGlyphBBXOffX(u8g->font, g);
+ buf->w = - u8g->glyph_x;
+
+ /* Also copy the position of the first glyph. This is the reference point of the string (negated) */
+ buf->x = u8g->glyph_x;
+ buf->y = u8g->glyph_y;
+
+ for(;;)
+ {
+
+ /* calculated y position of the upper left corner (y_max) and lower left corner (y_min) of the string */
+ /* relative to the base line */
+
+ tmp = u8g->glyph_y;
+ if ( buf->y_min > tmp )
+ buf->y_min = tmp;
+
+ tmp +=u8g->glyph_height;
+ if ( buf->y_max < tmp )
+ buf->y_max = tmp;
+
+ /* check and stop if the end of the string is reached */
+ s++;
+ if ( *s == '\0' )
+ break;
+
+ /* if there are still more characters, add the delta to the next glyph */
+ buf->w += u8g->glyph_dx;
+
+ /* load the next glyph information */
+ u8g_GetGlyph(u8g, *s);
+ }
+
+ /* finally calculate the width of the last char */
+ /* if g was not updated in the for loop (strlen() == 1), then the initial offset x gets removed */
+ buf->w += u8g->glyph_width;
+ // buf->w += u8g_font_GetGlyphBBXOffX(u8g->font, g);
+
+ buf->w += u8g->glyph_x;
+}
+
+/* calculate minimal box */
+void u8g_font_box_min(u8g_t *u8g, const char *s, u8g_str_size_t *buf)
+{
+ u8g_font_calc_str_min_box(u8g, s, buf);
+}
+
+/* calculate gA box, but do not calculate the overall width */
+void u8g_font_box_left_gA(u8g_t *u8g, const char *s, u8g_str_size_t *buf)
+{
+
+}
+
+/* calculate gA box, including overall width */
+void u8g_font_box_all_gA(u8g_t *u8g, const char *s, u8g_str_size_t *buf)
+{
+
+}
+
+
+static void u8g_font_get_str_box_fill_args(u8g_t *u8g, const char *s, u8g_str_size_t *buf, u8g_uint_t *x, u8g_uint_t *y, u8g_uint_t *width, u8g_uint_t *height)
+{
+ /*
+ u8g_glyph_t g;
+ g =
+ */
+ u8g_GetGlyph(u8g, *s);
+ *x += u8g->glyph_x;
+ *width = buf->w;
+ *y -= buf->y_max;
+ /* +1 because y_max is a height, this compensates the next step */
+ //*y += 1;
+ /* because the reference point is one below the string, this compensates the previous step */
+ //*y -= 1;
+ *height = buf->y_max;
+ *height -= buf->y_min;
+}
+
+
+void u8g_GetStrMinBox(u8g_t *u8g, const char *s, u8g_uint_t *x, u8g_uint_t *y, u8g_uint_t *width, u8g_uint_t *height)
+{
+ u8g_str_size_t buf;
+
+ if ( *s == '\0' )
+ {
+ *width= 0;
+ *height = 0;
+ return;
+ }
+
+ u8g_font_calc_str_min_box(u8g, s, &buf);
+ u8g_font_get_str_box_fill_args(u8g, s, &buf, x, y, width, height);
+}
+
+
+void u8g_GetStrAMinBox(u8g_t *u8g, const char *s, u8g_uint_t *x, u8g_uint_t *y, u8g_uint_t *width, u8g_uint_t *height)
+{
+ u8g_str_size_t buf;
+ uint8_t cap_a;
+
+ if ( *s == '\0' )
+ {
+ *width= 0;
+ *height = 0;
+ return;
+ }
+
+ cap_a = u8g_font_GetCapitalAHeight(u8g->font);
+ u8g_font_calc_str_min_box(u8g, s, &buf);
+ if ( buf.y_max < cap_a )
+ buf.y_max = cap_a;
+ u8g_font_get_str_box_fill_args(u8g, s, &buf, x, y, width, height);
+}
+
+void u8g_SetFont(u8g_t *u8g, const u8g_fntpgm_uint8_t *font)
+{
+ if ( u8g->font != font )
+ {
+ u8g->font = font;
+ u8g_UpdateRefHeight(u8g);
+ u8g_SetFontPosBaseline(u8g);
+ }
+}
+
+/*========================================================================*/
+/* anti aliasing fonts */
+
+int8_t u8g_draw_aa_glyph(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ const u8g_pgm_uint8_t *data;
+ uint8_t w, h;
+ uint8_t i, j;
+ u8g_uint_t ix, iy;
+
+ {
+ u8g_glyph_t g = u8g_GetGlyph(u8g, encoding);
+ if ( g == NULL )
+ return 0;
+ data = u8g_font_GetGlyphDataStart(u8g->font, g);
+ }
+
+ w = u8g->glyph_width;
+ h = u8g->glyph_height;
+
+ x += u8g->glyph_x;
+ y -= u8g->glyph_y;
+ y--;
+
+ if ( u8g_IsBBXIntersection(u8g, x, y-h+1, w, h) == 0 )
+ return u8g->glyph_dx;
+
+ /* now, w is reused as bytes per line */
+ w += 3;
+ w /= 4;
+
+ iy = y;
+ iy -= h;
+ iy++;
+
+ for( j = 0; j < h; j++ )
+ {
+ ix = x;
+ for( i = 0; i < w; i++ )
+ {
+ u8g_Draw4TPixel(u8g, ix, iy, 0, u8g_pgm_read(data));
+ data++;
+ ix+=4;
+ }
+ iy++;
+ }
+ return u8g->glyph_dx;
+}
+
+int8_t u8g_DrawAAGlyph(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, uint8_t encoding)
+{
+ y += u8g->font_calc_vref(u8g);
+ return u8g_draw_aa_glyph(u8g, x, y, encoding);
+}
+
+u8g_uint_t u8g_DrawAAStr(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, const char *s)
+{
+ u8g_uint_t t = 0;
+ int8_t d;
+
+ if ( u8g_font_GetFormat(u8g->font) != 2 )
+ return 0;
+ //u8g_uint_t u8g_GetStrWidth(u8g, s);
+ //u8g_font_GetFontAscent(u8g->font)-u8g_font_GetFontDescent(u8g->font);
+
+ y += u8g->font_calc_vref(u8g);
+
+ while( *s != '\0' )
+ {
+ d = u8g_draw_aa_glyph(u8g, x, y, *s);
+ x += d;
+ t += d;
+ s++;
+ }
+ return t;
+}
+