/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2002 by Alan Korr * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "config.h" #include "lcd.h" #include "kernel.h" #include "thread.h" #include #include #include "file.h" #include "debug.h" #include "system.h" #include "font.h" #include "hwcompat.h" #include "rbunicode.h" #include "bidi.h" /*** definitions ***/ #define LCD_SET_LOWER_COLUMN_ADDRESS ((char)0x00) #define LCD_SET_HIGHER_COLUMN_ADDRESS ((char)0x10) #define LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO ((char)0x20) #define LCD_SET_POWER_CONTROL_REGISTER ((char)0x28) #define LCD_SET_DISPLAY_START_LINE ((char)0x40) #define LCD_SET_CONTRAST_CONTROL_REGISTER ((char)0x81) #define LCD_SET_SEGMENT_REMAP ((char)0xA0) #define LCD_SET_LCD_BIAS ((char)0xA2) #define LCD_SET_ENTIRE_DISPLAY_OFF ((char)0xA4) #define LCD_SET_ENTIRE_DISPLAY_ON ((char)0xA5) #define LCD_SET_NORMAL_DISPLAY ((char)0xA6) #define LCD_SET_REVERSE_DISPLAY ((char)0xA7) #define LCD_SET_MULTIPLEX_RATIO ((char)0xA8) #define LCD_SET_BIAS_TC_OSC ((char)0xA9) #define LCD_SET_1OVER4_BIAS_RATIO ((char)0xAA) #define LCD_SET_INDICATOR_OFF ((char)0xAC) #define LCD_SET_INDICATOR_ON ((char)0xAD) #define LCD_SET_DISPLAY_OFF ((char)0xAE) #define LCD_SET_DISPLAY_ON ((char)0xAF) #define LCD_SET_PAGE_ADDRESS ((char)0xB0) #define LCD_SET_COM_OUTPUT_SCAN_DIRECTION ((char)0xC0) #define LCD_SET_TOTAL_FRAME_PHASES ((char)0xD2) #define LCD_SET_DISPLAY_OFFSET ((char)0xD3) #define LCD_SET_READ_MODIFY_WRITE_MODE ((char)0xE0) #define LCD_SOFTWARE_RESET ((char)0xE2) #define LCD_NOP ((char)0xE3) #define LCD_SET_END_OF_READ_MODIFY_WRITE_MODE ((char)0xEE) /* LCD command codes */ #define LCD_CNTL_RESET 0xe2 /* Software reset */ #define LCD_CNTL_POWER 0x2f /* Power control */ #define LCD_CNTL_CONTRAST 0x81 /* Contrast */ #define LCD_CNTL_OUTSCAN 0xc8 /* Output scan direction */ #define LCD_CNTL_SEGREMAP 0xa1 /* Segment remap */ #define LCD_CNTL_DISPON 0xaf /* Display on */ #define LCD_CNTL_PAGE 0xb0 /* Page address */ #define LCD_CNTL_HIGHCOL 0x10 /* Upper column address */ #define LCD_CNTL_LOWCOL 0x00 /* Lower column address */ #define SCROLLABLE_LINES 13 /*** globals ***/ unsigned char lcd_framebuffer[LCD_HEIGHT/8][LCD_WIDTH]; static int drawmode = DRMODE_SOLID; static int xmargin = 0; static int ymargin = 0; static int curfont = FONT_SYSFIXED; #ifndef SIMULATOR static int xoffset; /* needed for flip */ #endif /* scrolling */ static volatile int scrolling_lines=0; /* Bitpattern of which lines are scrolling */ static void scroll_thread(void); static char scroll_stack[DEFAULT_STACK_SIZE]; static const char scroll_name[] = "scroll"; static int scroll_ticks = 12; /* # of ticks between updates*/ static int scroll_delay = HZ/2; /* ticks delay before start */ static int scroll_step = 6; /* pixels per scroll step */ static int bidir_limit = 50; /* percent */ static struct scrollinfo scroll[SCROLLABLE_LINES]; static const char scroll_tick_table[16] = { /* Hz values: 1, 1.25, 1.55, 2, 2.5, 3.12, 4, 5, 6.25, 8.33, 10, 12.5, 16.7, 20, 25, 33 */ 100, 80, 64, 50, 40, 32, 25, 20, 16, 12, 10, 8, 6, 5, 4, 3 }; /*** driver routines ***/ /* optimised archos recorder code is in lcd.S */ #if CONFIG_CPU == TCC730 /* Optimization opportunity: In the following I do exactly as in the archos firmware. There is probably a better way (ie. do only one mask operation) */ void lcd_write_command(int cmd) { P2 &= 0xF7; P2 &= 0xDF; P2 &= 0xFB; P0 = cmd; P2 |= 0x04; P2 |= 0x08; P2 |= 0x20; } void lcd_write_data( const unsigned char* data, int count ) { int i; for (i=0; i < count; i++) { P2 |= 0x08; P2 &= 0xDF; P2 &= 0xFB; P0 = data[i]; P2 |= 0x04; P2 |= 0x08; P2 |= 0x20; } } #elif CONFIG_CPU == PNX0101 void lcd_write_command(int cmd) { while ((LCDSTAT & 3) != 3); LCDCMD = cmd; } void lcd_write_data( const unsigned char* data, int count ) { int i; for (i=0; i < count; i++) { while ((LCDSTAT & 3) != 3); LCDDATA = data[i]; } } #endif /*** hardware configuration ***/ #ifndef SIMULATOR int lcd_default_contrast(void) { #if CONFIG_LCD == LCD_GMINI100 return 31; #elif CONFIG_LCD == LCD_IFP7XX return 45; #else return (read_hw_mask() & LCD_CONTRAST_BIAS) ? 31 : 49; #endif } void lcd_set_contrast(int val) { lcd_write_command(LCD_CNTL_CONTRAST); lcd_write_command(val); } void lcd_set_invert_display(bool yesno) { if (yesno) lcd_write_command(LCD_SET_REVERSE_DISPLAY); else lcd_write_command(LCD_SET_NORMAL_DISPLAY); } /* turn the display upside down (call lcd_update() afterwards) */ void lcd_set_flip(bool yesno) { #ifdef HAVE_DISPLAY_FLIPPED if (!yesno) #else if (yesno) #endif #if CONFIG_LCD == LCD_GMINI100 { lcd_write_command(LCD_SET_SEGMENT_REMAP | 0x01); lcd_write_command(LCD_SET_COM_OUTPUT_SCAN_DIRECTION | 0x08); xoffset = 132 - LCD_WIDTH; } else { lcd_write_command(LCD_SET_SEGMENT_REMAP); lcd_write_command(LCD_SET_COM_OUTPUT_SCAN_DIRECTION | 0x08); xoffset = 0; } #else { lcd_write_command(LCD_SET_SEGMENT_REMAP); lcd_write_command(LCD_SET_COM_OUTPUT_SCAN_DIRECTION); xoffset = 132 - LCD_WIDTH; /* 132 colums minus the 112 we have */ } else { lcd_write_command(LCD_SET_SEGMENT_REMAP | 0x01); lcd_write_command(LCD_SET_COM_OUTPUT_SCAN_DIRECTION | 0x08); #if CONFIG_LCD == LCD_IFP7XX xoffset = 4; #else xoffset = 0; #endif } #endif } #endif /* !SIMULATOR */ /* LCD init */ #ifdef SIMULATOR void lcd_init(void) { create_thread(scroll_thread, scroll_stack, sizeof(scroll_stack), scroll_name); } #else void lcd_init(void) { #if CONFIG_CPU == TCC730 /* Initialise P0 & some P2 output pins: P0 -> all pins normal cmos output P2 -> pins 1 to 5 normal cmos output. */ P0CON = 0xff; P2CONL |= 0x5a; P2CONL &= 0x5b; P2CONH |= 1; #elif CONFIG_CPU == PNX0101 LCDREG10 = 0xf; LCDREG04 = 0x4084; #else /* Initialize PB0-3 as output pins */ PBCR2 &= 0xff00; /* MD = 00 */ PBIOR |= 0x000f; /* IOR = 1 */ #endif /* inits like the original firmware */ lcd_write_command(LCD_SOFTWARE_RESET); lcd_write_command(LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO + 4); #if CONFIG_LCD == LCD_IFP7XX lcd_write_command(LCD_SET_LCD_BIAS); #else lcd_write_command(LCD_SET_1OVER4_BIAS_RATIO + 0); /* force 1/4 bias: 0 */ #endif lcd_write_command(LCD_SET_POWER_CONTROL_REGISTER + 7); /* power control register: op-amp=1, regulator=1, booster=1 */ lcd_write_command(LCD_SET_DISPLAY_ON); lcd_write_command(LCD_SET_NORMAL_DISPLAY); lcd_set_flip(false); lcd_write_command(LCD_SET_DISPLAY_START_LINE + 0); lcd_set_contrast(lcd_default_contrast()); lcd_write_command(LCD_SET_PAGE_ADDRESS); lcd_write_command(LCD_SET_LOWER_COLUMN_ADDRESS + 0); lcd_write_command(LCD_SET_HIGHER_COLUMN_ADDRESS + 0); lcd_clear_display(); lcd_update(); create_thread(scroll_thread, scroll_stack, sizeof(scroll_stack), scroll_name); } /*** Update functions ***/ /* Performance function that works with an external buffer note that by and bheight are in 8-pixel units! */ void lcd_blit(const unsigned char* data, int x, int by, int width, int bheight, int stride) { /* Copy display bitmap to hardware */ while (bheight--) { lcd_write_command (LCD_CNTL_PAGE | (by++ & 0xf)); lcd_write_command (LCD_CNTL_HIGHCOL | (((x+xoffset)>>4) & 0xf)); lcd_write_command (LCD_CNTL_LOWCOL | ((x+xoffset) & 0xf)); lcd_write_data(data, width); data += stride; } } /* Update the display. This must be called after all other LCD functions that change the display. */ void lcd_update(void) ICODE_ATTR; void lcd_update(void) { int y; /* Copy display bitmap to hardware */ for (y = 0; y < LCD_HEIGHT/8; y++) { lcd_write_command (LCD_CNTL_PAGE | (y & 0xf)); lcd_write_command (LCD_CNTL_HIGHCOL | ((xoffset >> 4) & 0xf)); lcd_write_command (LCD_CNTL_LOWCOL | (xoffset & 0xf)); lcd_write_data (lcd_framebuffer[y], LCD_WIDTH); } } /* Update a fraction of the display. */ void lcd_update_rect(int, int, int, int) ICODE_ATTR; void lcd_update_rect(int x, int y, int width, int height) { int ymax; /* The Y coordinates have to work on even 8 pixel rows */ ymax = (y + height-1) >> 3; y >>= 3; if(x + width > LCD_WIDTH) width = LCD_WIDTH - x; if (width <= 0) return; /* nothing left to do, 0 is harmful to lcd_write_data() */ if(ymax >= LCD_HEIGHT/8) ymax = LCD_HEIGHT/8-1; /* Copy specified rectange bitmap to hardware */ for (; y <= ymax; y++) { lcd_write_command (LCD_CNTL_PAGE | (y & 0xf)); lcd_write_command (LCD_CNTL_HIGHCOL | (((x+xoffset) >> 4) & 0xf)); lcd_write_command (LCD_CNTL_LOWCOL | ((x+xoffset) & 0xf)); lcd_write_data (&lcd_framebuffer[y][x], width); } } #endif /* !SIMULATOR */ /*** parameter handling ***/ void lcd_set_drawmode(int mode) { drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID); } int lcd_get_drawmode(void) { return drawmode; } void lcd_setmargins(int x, int y) { xmargin = x; ymargin = y; } int lcd_getxmargin(void) { return xmargin; } int lcd_getymargin(void) { return ymargin; } void lcd_setfont(int newfont) { curfont = newfont; } int lcd_getstringsize(const unsigned char *str, int *w, int *h) { return font_getstringsize(str, w, h, curfont); } /*** low-level drawing functions ***/ static void setpixel(int x, int y) { lcd_framebuffer[y>>3][x] |= 1 << (y & 7); } static void clearpixel(int x, int y) { lcd_framebuffer[y>>3][x] &= ~(1 << (y & 7)); } static void flippixel(int x, int y) { lcd_framebuffer[y>>3][x] ^= 1 << (y & 7); } static void nopixel(int x, int y) { (void)x; (void)y; } lcd_pixelfunc_type* const lcd_pixelfuncs[8] = { flippixel, nopixel, setpixel, setpixel, nopixel, clearpixel, nopixel, clearpixel }; static void flipblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void flipblock(unsigned char *address, unsigned mask, unsigned bits) { *address ^= bits & mask; } static void bgblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void bgblock(unsigned char *address, unsigned mask, unsigned bits) { *address &= bits | ~mask; } static void fgblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void fgblock(unsigned char *address, unsigned mask, unsigned bits) { *address |= bits & mask; } static void solidblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void solidblock(unsigned char *address, unsigned mask, unsigned bits) { unsigned data = *(char*)address; bits ^= data; *address = data ^ (bits & mask); } static void flipinvblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void flipinvblock(unsigned char *address, unsigned mask, unsigned bits) { *address ^= ~bits & mask; } static void bginvblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void bginvblock(unsigned char *address, unsigned mask, unsigned bits) { *address &= ~(bits & mask); } static void fginvblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void fginvblock(unsigned char *address, unsigned mask, unsigned bits) { *address |= ~bits & mask; } static void solidinvblock(unsigned char *address, unsigned mask, unsigned bits) ICODE_ATTR; static void solidinvblock(unsigned char *address, unsigned mask, unsigned bits) { unsigned data = *(char *)address; bits = ~bits ^ data; *address = data ^ (bits & mask); } lcd_blockfunc_type* const lcd_blockfuncs[8] = { flipblock, bgblock, fgblock, solidblock, flipinvblock, bginvblock, fginvblock, solidinvblock }; /*** drawing functions ***/ /* Clear the whole display */ void lcd_clear_display(void) { unsigned bits = (drawmode & DRMODE_INVERSEVID) ? 0xFFu : 0; memset(lcd_framebuffer, bits, sizeof lcd_framebuffer); scrolling_lines = 0; } /* Set a single pixel */ void lcd_drawpixel(int x, int y) { if (((unsigned)x < LCD_WIDTH) && ((unsigned)y < LCD_HEIGHT)) lcd_pixelfuncs[drawmode](x, y); } /* Draw a line */ void lcd_drawline(int x1, int y1, int x2, int y2) { int numpixels; int i; int deltax, deltay; int d, dinc1, dinc2; int x, xinc1, xinc2; int y, yinc1, yinc2; lcd_pixelfunc_type *pfunc = lcd_pixelfuncs[drawmode]; deltax = abs(x2 - x1); deltay = abs(y2 - y1); xinc2 = 1; yinc2 = 1; if (deltax >= deltay) { numpixels = deltax; d = 2 * deltay - deltax; dinc1 = deltay * 2; dinc2 = (deltay - deltax) * 2; xinc1 = 1; yinc1 = 0; } else { numpixels = deltay; d = 2 * deltax - deltay; dinc1 = deltax * 2; dinc2 = (deltax - deltay) * 2; xinc1 = 0; yinc1 = 1; } numpixels++; /* include endpoints */ if (x1 > x2) { xinc1 = -xinc1; xinc2 = -xinc2; } if (y1 > y2) { yinc1 = -yinc1; yinc2 = -yinc2; } x = x1; y = y1; for (i = 0; i < numpixels; i++) { if (((unsigned)x < LCD_WIDTH) && ((unsigned)y < LCD_HEIGHT)) pfunc(x, y); if (d < 0) { d += dinc1; x += xinc1; y += yinc1; } else { d += dinc2; x += xinc2; y += yinc2; } } } /* Draw a horizontal line (optimised) */ void lcd_hline(int x1, int x2, int y) { int x; unsigned char *dst, *dst_end; unsigned mask; lcd_blockfunc_type *bfunc; /* direction flip */ if (x2 < x1) { x = x1; x1 = x2; x2 = x; } /* nothing to draw? */ if (((unsigned)y >= LCD_HEIGHT) || (x1 >= LCD_WIDTH) || (x2 < 0)) return; /* clipping */ if (x1 < 0) x1 = 0; if (x2 >= LCD_WIDTH) x2 = LCD_WIDTH-1; bfunc = lcd_blockfuncs[drawmode]; dst = &lcd_framebuffer[y>>3][x1]; mask = 1 << (y & 7); dst_end = dst + x2 - x1; do bfunc(dst++, mask, 0xFFu); while (dst <= dst_end); } /* Draw a vertical line (optimised) */ void lcd_vline(int x, int y1, int y2) { int ny; unsigned char *dst; unsigned mask, mask_bottom; lcd_blockfunc_type *bfunc; /* direction flip */ if (y2 < y1) { ny = y1; y1 = y2; y2 = ny; } /* nothing to draw? */ if (((unsigned)x >= LCD_WIDTH) || (y1 >= LCD_HEIGHT) || (y2 < 0)) return; /* clipping */ if (y1 < 0) y1 = 0; if (y2 >= LCD_HEIGHT) y2 = LCD_HEIGHT-1; bfunc = lcd_blockfuncs[drawmode]; dst = &lcd_framebuffer[y1>>3][x]; ny = y2 - (y1 & ~7); mask = 0xFFu << (y1 & 7); mask_bottom = 0xFFu >> (~ny & 7); for (; ny >= 8; ny -= 8) { bfunc(dst, mask, 0xFFu); dst += LCD_WIDTH; mask = 0xFFu; } mask &= mask_bottom; bfunc(dst, mask, 0xFFu); } /* Draw a rectangular box */ void lcd_drawrect(int x, int y, int width, int height) { if ((width <= 0) || (height <= 0)) return; int x2 = x + width - 1; int y2 = y + height - 1; lcd_vline(x, y, y2); lcd_vline(x2, y, y2); lcd_hline(x, x2, y); lcd_hline(x, x2, y2); } /* Fill a rectangular area */ void lcd_fillrect(int x, int y, int width, int height) { int ny; unsigned char *dst, *dst_end; unsigned mask, mask_bottom; unsigned bits = 0; lcd_blockfunc_type *bfunc; bool fillopt = false; /* nothing to draw? */ if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT) || (x + width <= 0) || (y + height <= 0)) return; /* clipping */ if (x < 0) { width += x; x = 0; } if (y < 0) { height += y; y = 0; } if (x + width > LCD_WIDTH) width = LCD_WIDTH - x; if (y + height > LCD_HEIGHT) height = LCD_HEIGHT - y; if (drawmode & DRMODE_INVERSEVID) { if (drawmode & DRMODE_BG) { fillopt = true; } } else { if (drawmode & DRMODE_FG) { fillopt = true; bits = 0xFFu; } } bfunc = lcd_blockfuncs[drawmode]; dst = &lcd_framebuffer[y>>3][x]; ny = height - 1 + (y & 7); mask = 0xFFu << (y & 7); mask_bottom = 0xFFu >> (~ny & 7); for (; ny >= 8; ny -= 8) { if (fillopt && (mask == 0xFFu)) memset(dst, bits, width); else { unsigned char *dst_row = dst; dst_end = dst_row + width; do bfunc(dst_row++, mask, 0xFFu); while (dst_row < dst_end); } dst += LCD_WIDTH; mask = 0xFFu; } mask &= mask_bottom; if (fillopt && (mask == 0xFFu)) memset(dst, bits, width); else { dst_end = dst + width; do bfunc(dst++, mask, 0xFFu); while (dst < dst_end); } } /* About Rockbox' internal bitmap format: * * A bitmap contains one bit for every pixel that defines if that pixel is * black (1) or white (0). Bits within a byte are arranged vertically, LSB * at top. * The bytes are stored in row-major order, with byte 0 being top left, * byte 1 2nd from left etc. The first row of bytes defines pixel rows * 0..7, the second row defines pixel row 8..15 etc. * * This is the same as the internal lcd hw format. */ /* Draw a partial bitmap */ void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y, int stride, int x, int y, int width, int height) ICODE_ATTR; void lcd_bitmap_part(const unsigned char *src, int src_x, int src_y, int stride, int x, int y, int width, int height) { int shift, ny; unsigned char *dst, *dst_end; unsigned mask, mask_bottom; lcd_blockfunc_type *bfunc; /* nothing to draw? */ if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT) || (x + width <= 0) || (y + height <= 0)) return; /* clipping */ if (x < 0) { width += x; src_x -= x; x = 0; } if (y < 0) { height += y; src_y -= y; y = 0; } if (x + width > LCD_WIDTH) width = LCD_WIDTH - x; if (y + height > LCD_HEIGHT) height = LCD_HEIGHT - y; src += stride * (src_y >> 3) + src_x; /* move starting point */ src_y &= 7; y -= src_y; dst = &lcd_framebuffer[y>>3][x]; shift = y & 7; ny = height - 1 + shift + src_y; bfunc = lcd_blockfuncs[drawmode]; mask = 0xFFu << (shift + src_y); mask_bottom = 0xFFu >> (~ny & 7); if (shift == 0) { bool copyopt = (drawmode == DRMODE_SOLID); for (; ny >= 8; ny -= 8) { if (copyopt && (mask == 0xFFu)) memcpy(dst, src, width); else { const unsigned char *src_row = src; unsigned char *dst_row = dst; dst_end = dst_row + width; do bfunc(dst_row++, mask, *src_row++); while (dst_row < dst_end); } src += stride; dst += LCD_WIDTH; mask = 0xFFu; } mask &= mask_bottom; if (copyopt && (mask == 0xFFu)) memcpy(dst, src, width); else { dst_end = dst + width; do bfunc(dst++, mask, *src++); while (dst < dst_end); } } else { dst_end = dst + width; do { const unsigned char *src_col = src++; unsigned char *dst_col = dst++; unsigned mask_col = mask; unsigned data = 0; for (y = ny; y >= 8; y -= 8) { data |= *src_col << shift; if (mask_col & 0xFFu) { bfunc(dst_col, mask_col, data); mask_col = 0xFFu; } else mask_col >>= 8; src_col += stride; dst_col += LCD_WIDTH; data >>= 8; } data |= *src_col << shift; bfunc(dst_col, mask_col & mask_bottom, data); } while (dst < dst_end); } } /* Draw a full bitmap */ void lcd_bitmap(const unsigned char *src, int x, int y, int width, int height) { lcd_bitmap_part(src, 0, 0, width, x, y, width, height); } /* put a string at a given pixel position, skipping first ofs pixel columns */ static void lcd_putsxyofs(int x, int y, int ofs, const unsigned char *str) { unsigned short ch; unsigned short *ucs; struct font* pf = font_get(curfont); ucs = bidi_l2v(str, 1); while ((ch = *ucs++) != 0 && x < LCD_WIDTH) { int width; const unsigned char *bits; /* get proportional width and glyph bits */ width = font_get_width(pf,ch); if (ofs > width) { ofs -= width; continue; } bits = font_get_bits(pf, ch); lcd_mono_bitmap_part(bits, ofs, 0, width, x, y, width - ofs, pf->height); x += width - ofs; ofs = 0; } } /* put a string at a given pixel position */ void lcd_putsxy(int x, int y, const unsigned char *str) { lcd_putsxyofs(x, y, 0, str); } /*** Line oriented text output ***/ /* put a string at a given char position */ void lcd_puts(int x, int y, const unsigned char *str) { lcd_puts_style_offset(x, y, str, STYLE_DEFAULT, 0); } void lcd_puts_style(int x, int y, const unsigned char *str, int style) { lcd_puts_style_offset(x, y, str, style, 0); } void lcd_puts_offset(int x, int y, const unsigned char *str, int offset) { lcd_puts_style_offset(x, y, str, STYLE_DEFAULT, offset); } /* put a string at a given char position, style, and pixel position, * skipping first offset pixel columns */ void lcd_puts_style_offset(int x, int y, const unsigned char *str, int style, int offset) { int xpos,ypos,w,h,xrect; int lastmode = drawmode; /* make sure scrolling is turned off on the line we are updating */ scrolling_lines &= ~(1 << y); if(!str || !str[0]) return; lcd_getstringsize(str, &w, &h); xpos = xmargin + x*w / utf8length(str); ypos = ymargin + y*h; drawmode = (style & STYLE_INVERT) ? (DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID; lcd_putsxyofs(xpos, ypos, offset, str); drawmode ^= DRMODE_INVERSEVID; xrect = xpos + MAX(w - offset, 0); lcd_fillrect(xrect, ypos, LCD_WIDTH - xrect, h); drawmode = lastmode; } /*** scrolling ***/ /* Reverse the invert setting of the scrolling line (if any) at given char position. Setting will go into affect next time line scrolls. */ void lcd_invertscroll(int x, int y) { struct scrollinfo* s; (void)x; s = &scroll[y]; s->invert = !s->invert; } void lcd_stop_scroll(void) { scrolling_lines=0; } void lcd_scroll_speed(int speed) { scroll_ticks = scroll_tick_table[speed]; } void lcd_scroll_step(int step) { scroll_step = step; } void lcd_scroll_delay(int ms) { scroll_delay = ms / (HZ / 10); } void lcd_bidir_scroll(int percent) { bidir_limit = percent; } void lcd_puts_scroll(int x, int y, const unsigned char *string) { lcd_puts_scroll_style(x, y, string, STYLE_DEFAULT); } void lcd_puts_scroll_style(int x, int y, const unsigned char *string, int style) { lcd_puts_scroll_style_offset(x, y, string, style, 0); } void lcd_puts_scroll_offset(int x, int y, const unsigned char *string, int offset) { lcd_puts_scroll_style_offset(x, y, string, STYLE_DEFAULT, offset); } void lcd_puts_scroll_style_offset(int x, int y, const unsigned char *string, int style, int offset) { struct scrollinfo* s; int w, h; s = &scroll[y]; s->start_tick = current_tick + scroll_delay; s->invert = false; if (style & STYLE_INVERT) { s->invert = true; lcd_puts_style_offset(x,y,string,STYLE_INVERT,offset); } else lcd_puts_offset(x,y,string,offset); lcd_getstringsize(string, &w, &h); if (LCD_WIDTH - x * 8 - xmargin < w) { /* prepare scroll line */ char *end; memset(s->line, 0, sizeof s->line); strcpy(s->line, string); /* get width */ s->width = lcd_getstringsize(s->line, &w, &h); /* scroll bidirectional or forward only depending on the string width */ if ( bidir_limit ) { s->bidir = s->width < (LCD_WIDTH - xmargin) * (100 + bidir_limit) / 100; } else s->bidir = false; if (!s->bidir) { /* add spaces if scrolling in the round */ strcat(s->line, " "); /* get new width incl. spaces */ s->width = lcd_getstringsize(s->line, &w, &h); } end = strchr(s->line, '\0'); strncpy(end, string, LCD_WIDTH/2); s->len = utf8length(string); s->offset = offset; s->startx = x; s->backward = false; scrolling_lines |= (1<start_tick)) continue; if (s->backward) s->offset -= scroll_step; else s->offset += scroll_step; pf = font_get(curfont); xpos = xmargin + s->startx * s->width / s->len; ypos = ymargin + index * pf->height; if (s->bidir) { /* scroll bidirectional */ if (s->offset <= 0) { /* at beginning of line */ s->offset = 0; s->backward = false; s->start_tick = current_tick + scroll_delay * 2; } if (s->offset >= s->width - (LCD_WIDTH - xpos)) { /* at end of line */ s->offset = s->width - (LCD_WIDTH - xpos); s->backward = true; s->start_tick = current_tick + scroll_delay * 2; } } else { /* scroll forward the whole time */ if (s->offset >= s->width) s->offset %= s->width; } lastmode = drawmode; drawmode = s->invert ? (DRMODE_SOLID|DRMODE_INVERSEVID) : DRMODE_SOLID; lcd_putsxyofs(xpos, ypos, s->offset, s->line); drawmode = lastmode; lcd_update_rect(xpos, ypos, LCD_WIDTH - xpos, pf->height); } sleep(scroll_ticks); } }