| /*************************************************************************** |
| * __________ __ ___. |
| * 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" |
| |
| #ifdef HAVE_LCD_BITMAP |
| |
| #include "lcd.h" |
| #include "kernel.h" |
| #include "thread.h" |
| #include <string.h> |
| #include <stdlib.h> |
| #include "file.h" |
| #include "debug.h" |
| #include "system.h" |
| #include "font.h" |
| #include "hwcompat.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 SCROLL_SPACING 3 |
| |
| #define SCROLLABLE_LINES 13 |
| |
| struct scrollinfo { |
| char line[MAX_PATH + LCD_WIDTH/2 + SCROLL_SPACING + 2]; |
| int len; /* length of line in chars */ |
| int width; /* length of line in pixels */ |
| int offset; |
| int startx; |
| bool backward; /* scroll presently forward or backward? */ |
| bool bidir; |
| bool invert; /* invert the scrolled text */ |
| long start_tick; |
| }; |
| |
| 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 char scroll_ticks = 12; /* # of ticks between updates*/ |
| static int scroll_delay = HZ/2; /* ticks delay before start */ |
| static char scroll_step = 6; /* pixels per scroll step */ |
| static int bidir_limit = 50; /* percent */ |
| static struct scrollinfo scroll[SCROLLABLE_LINES]; |
| static int xmargin = 0; |
| static int ymargin = 0; |
| static int curfont = FONT_SYSFIXED; |
| #ifndef SIMULATOR |
| static int xoffset; /* needed for flip */ |
| #endif |
| |
| unsigned char lcd_framebuffer[LCD_HEIGHT/8][LCD_WIDTH]; |
| |
| /* All zeros and ones bitmaps for area filling */ |
| static const unsigned char zeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; |
| static const unsigned char ones[8] = { 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff}; |
| |
| int lcd_default_contrast(void) |
| { |
| #ifdef SIMULATOR |
| return 30; |
| #else |
| return (read_hw_mask() & LCD_CONTRAST_BIAS) ? 31 : 49; |
| #endif |
| } |
| |
| #ifdef SIMULATOR |
| |
| void lcd_init(void) |
| { |
| create_thread(scroll_thread, scroll_stack, |
| sizeof(scroll_stack), scroll_name); |
| } |
| |
| #else |
| |
| /* |
| * Initialize LCD |
| */ |
| void lcd_init (void) |
| { |
| /* Initialize PB0-3 as output pins */ |
| PBCR2 &= 0xff00; /* MD = 00 */ |
| PBIOR |= 0x000f; /* IOR = 1 */ |
| |
| /* inits like the original firmware */ |
| lcd_write_command(LCD_SOFTWARE_RESET); |
| lcd_write_command(LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO + 4); |
| lcd_write_command(LCD_SET_1OVER4_BIAS_RATIO + 0); /* force 1/4 bias: 0 */ |
| 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); |
| } |
| |
| |
| /* Performance function that works with an external buffer |
| note that y and height are in 8-pixel units! */ |
| void lcd_blit (const unsigned char* p_data, int x, int y, int width, |
| int height, int stride) |
| { |
| /* Copy display bitmap to hardware */ |
| while (height--) |
| { |
| 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(p_data, width); |
| p_data += stride; |
| } |
| } |
| |
| |
| /* |
| * Update the display. |
| * This must be called after all other LCD functions that change the display. |
| */ |
| void lcd_update (void) __attribute__ ((section (".icode"))); |
| 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) __attribute__ ((section (".icode"))); |
| void lcd_update_rect (int x_start, int y, |
| int width, int height) |
| { |
| int ymax; |
| |
| /* The Y coordinates have to work on even 8 pixel rows */ |
| ymax = (y + height-1)/8; |
| y /= 8; |
| |
| if(x_start + width > LCD_WIDTH) |
| width = LCD_WIDTH - x_start; |
| 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_start+xoffset)>>4) & 0xf)); |
| lcd_write_command (LCD_CNTL_LOWCOL | ((x_start+xoffset) & 0xf)); |
| |
| lcd_write_data (&lcd_framebuffer[y][x_start], width); |
| } |
| } |
| |
| 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 |
| { |
| 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); |
| xoffset = 0; |
| } |
| } |
| |
| /** |
| * Rolls up the lcd display by the specified amount of lines. |
| * Lines that are rolled out over the top of the screen are |
| * rolled in from the bottom again. This is a hardware |
| * remapping only and all operations on the lcd are affected. |
| * -> |
| * @param int lines - The number of lines that are rolled. |
| * The value must be 0 <= pixels < LCD_HEIGHT. |
| */ |
| void lcd_roll(int lines) |
| { |
| lcd_write_command(LCD_SET_DISPLAY_START_LINE | (lines & (LCD_HEIGHT-1))); |
| } |
| |
| #endif /* SIMULATOR */ |
| |
| void lcd_clear_display (void) |
| { |
| memset (lcd_framebuffer, 0, sizeof lcd_framebuffer); |
| scrolling_lines = 0; |
| } |
| |
| 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) |
| { |
| struct font* pf = font_get(curfont); |
| int ch; |
| int width = 0; |
| |
| while((ch = *str++)) { |
| /* check input range*/ |
| if (ch < pf->firstchar || ch >= pf->firstchar+pf->size) |
| ch = pf->defaultchar; |
| ch -= pf->firstchar; |
| |
| /* get proportional width and glyph bits*/ |
| width += pf->width? pf->width[ch]: pf->maxwidth; |
| } |
| if ( w ) |
| *w = width; |
| if ( h ) |
| *h = pf->height; |
| return width; |
| } |
| |
| /* put a string at a given char position */ |
| void lcd_puts(int x, int y, const unsigned char *str) |
| { |
| lcd_puts_style(x, y, str, STYLE_DEFAULT); |
| } |
| |
| void lcd_puts_style(int x, int y, const unsigned char *str, int style) |
| { |
| int xpos,ypos,w,h; |
| |
| #if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS) |
| /* We make the simulator truncate the string if it reaches the right edge, |
| as otherwise it'll wrap. The real target doesn't wrap. */ |
| |
| char buffer[12]; |
| if(strlen(str)+x > 11 ) { |
| strncpy(buffer, str, sizeof buffer); |
| buffer[11-x]=0; |
| str = buffer; |
| } |
| xmargin = 0; |
| ymargin = 8; |
| #endif |
| |
| /* 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 / strlen(str); |
| ypos = ymargin + y*h; |
| lcd_putsxy(xpos, ypos, str); |
| lcd_clearrect(xpos + w, ypos, LCD_WIDTH - (xpos + w), h); |
| if (style & STYLE_INVERT) |
| lcd_invertrect(xpos, ypos, LCD_WIDTH - xpos, h); |
| |
| #if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS) |
| lcd_update(); |
| #endif |
| } |
| |
| /* 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) |
| { |
| int ch; |
| struct font* pf = font_get(curfont); |
| |
| while ((ch = *str++) != '\0' && x < LCD_WIDTH) |
| { |
| int gwidth, width; |
| |
| /* check input range */ |
| if (ch < pf->firstchar || ch >= pf->firstchar+pf->size) |
| ch = pf->defaultchar; |
| ch -= pf->firstchar; |
| |
| /* no partial-height drawing for now... */ |
| if (y + pf->height > LCD_HEIGHT) |
| break; |
| |
| /* get proportional width and glyph bits */ |
| gwidth = pf->width ? pf->width[ch] : pf->maxwidth; |
| width = MIN (gwidth, LCD_WIDTH - x); |
| |
| if (ofs != 0) |
| { |
| if (ofs > width) |
| { |
| ofs -= width; |
| continue; |
| } |
| width -= ofs; |
| } |
| |
| if (width > 0) |
| { |
| unsigned int i; |
| const unsigned char* bits = pf->bits + |
| (pf->offset ? pf->offset[ch] |
| : ((pf->height + 7) / 8 * pf->maxwidth * ch)); |
| |
| if (ofs != 0) |
| { |
| for (i = 0; i < pf->height; i += 8) |
| { |
| lcd_bitmap (bits + ofs, x, y + i, width, |
| MIN(8, pf->height - i), true); |
| bits += gwidth; |
| } |
| } |
| else |
| lcd_bitmap ((unsigned char*) bits, x, y, gwidth, |
| pf->height, true); |
| x += width; |
| } |
| 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); |
| } |
| |
| /* |
| * 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 bitmap at (x, y), size (nx, ny) |
| * if 'clear' is true, clear destination area first |
| */ |
| void lcd_bitmap (const unsigned char *src, int x, int y, int nx, int ny, |
| bool clear) __attribute__ ((section (".icode"))); |
| void lcd_bitmap (const unsigned char *src, int x, int y, int nx, int ny, |
| bool clear) |
| { |
| const unsigned char *src_col; |
| unsigned char *dst, *dst_col; |
| unsigned int data, mask1, mask2, mask3, mask4; |
| int stride, shift; |
| |
| if (((unsigned) x >= LCD_WIDTH) || ((unsigned) y >= LCD_HEIGHT)) |
| return; |
| |
| stride = nx; /* otherwise right-clipping will destroy the image */ |
| |
| if (((unsigned) (x + nx)) >= LCD_WIDTH) |
| nx = LCD_WIDTH - x; |
| if (((unsigned) (y + ny)) >= LCD_HEIGHT) |
| ny = LCD_HEIGHT - y; |
| |
| dst = &lcd_framebuffer[y >> 3][x]; |
| shift = y & 7; |
| |
| if (!shift && clear) /* shortcut for byte aligned match with clear */ |
| { |
| while (ny >= 8) /* all full rows */ |
| { |
| memcpy(dst, src, nx); |
| src += stride; |
| dst += LCD_WIDTH; |
| ny -= 8; |
| } |
| if (ny == 0) /* nothing left to do? */ |
| return; |
| /* last partial row to do by default routine */ |
| } |
| |
| ny += shift; |
| |
| /* Calculate bit masks */ |
| mask4 = ~(0xfe << ((ny-1) & 7)); /* data mask for last partial row */ |
| if (clear) |
| { |
| mask1 = ~(0xff << shift); /* clearing of first partial row */ |
| mask2 = 0; /* clearing of intermediate (full) rows */ |
| mask3 = ~mask4; /* clearing of last partial row */ |
| if (ny <= 8) |
| mask3 |= mask1; |
| } |
| else |
| mask1 = mask2 = mask3 = 0xff; |
| |
| /* Loop for each column */ |
| for (x = 0; x < nx; x++) |
| { |
| src_col = src++; |
| dst_col = dst++; |
| data = 0; |
| y = 0; |
| |
| if (ny > 8) |
| { |
| /* First partial row */ |
| data = *src_col << shift; |
| *dst_col = (*dst_col & mask1) | data; |
| src_col += stride; |
| dst_col += LCD_WIDTH; |
| data >>= 8; |
| |
| /* Intermediate rows */ |
| for (y = 8; y < ny-8; y += 8) |
| { |
| data |= *src_col << shift; |
| *dst_col = (*dst_col & mask2) | data; |
| src_col += stride; |
| dst_col += LCD_WIDTH; |
| data >>= 8; |
| } |
| } |
| |
| /* Last partial row */ |
| if (y + shift < ny) |
| data |= *src_col << shift; |
| *dst_col = (*dst_col & mask3) | (data & mask4); |
| } |
| } |
| |
| /* |
| * Draw a rectangle with upper left corner at (x, y) |
| * and size (nx, ny) |
| */ |
| void lcd_drawrect (int x, int y, int nx, int ny) |
| { |
| int i; |
| |
| if (x > LCD_WIDTH) |
| return; |
| if (y > LCD_HEIGHT) |
| return; |
| |
| if (x + nx > LCD_WIDTH) |
| nx = LCD_WIDTH - x; |
| if (y + ny > LCD_HEIGHT) |
| ny = LCD_HEIGHT - y; |
| |
| /* vertical lines */ |
| for (i = 0; i < ny; i++) { |
| DRAW_PIXEL(x, (y + i)); |
| DRAW_PIXEL((x + nx - 1), (y + i)); |
| } |
| |
| /* horizontal lines */ |
| for (i = 0; i < nx; i++) { |
| DRAW_PIXEL((x + i),y); |
| DRAW_PIXEL((x + i),(y + ny - 1)); |
| } |
| } |
| |
| /* |
| * Clear a rectangular area at (x, y), size (nx, ny) |
| */ |
| void lcd_clearrect (int x, int y, int nx, int ny) |
| { |
| int i; |
| for (i = 0; i < nx; i++) |
| lcd_bitmap (zeros, x+i, y, 1, ny, true); |
| } |
| |
| /* |
| * Fill a rectangular area at (x, y), size (nx, ny) |
| */ |
| void lcd_fillrect (int x, int y, int nx, int ny) |
| { |
| int i; |
| for (i = 0; i < nx; i++) |
| lcd_bitmap (ones, x+i, y, 1, ny, true); |
| } |
| |
| /* Invert a rectangular area at (x, y), size (nx, ny) */ |
| void lcd_invertrect (int x, int y, int nx, int ny) |
| { |
| int i, j; |
| |
| if (x > LCD_WIDTH) |
| return; |
| if (y > LCD_HEIGHT) |
| return; |
| |
| if (x + nx > LCD_WIDTH) |
| nx = LCD_WIDTH - x; |
| if (y + ny > LCD_HEIGHT) |
| ny = LCD_HEIGHT - y; |
| |
| for (i = 0; i < nx; i++) |
| for (j = 0; j < ny; j++) |
| INVERT_PIXEL((x + i), (y + j)); |
| } |
| |
| /* 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_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; |
| |
| deltax = abs(x2 - x1); |
| deltay = abs(y2 - y1); |
| |
| if(deltax >= deltay) |
| { |
| numpixels = deltax; |
| d = 2 * deltay - deltax; |
| dinc1 = deltay * 2; |
| dinc2 = (deltay - deltax) * 2; |
| xinc1 = 1; |
| xinc2 = 1; |
| yinc1 = 0; |
| yinc2 = 1; |
| } |
| else |
| { |
| numpixels = deltay; |
| d = 2 * deltax - deltay; |
| dinc1 = deltax * 2; |
| dinc2 = (deltax - deltay) * 2; |
| xinc1 = 0; |
| xinc2 = 1; |
| yinc1 = 1; |
| yinc2 = 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++) |
| { |
| DRAW_PIXEL(x,y); |
| |
| if(d < 0) |
| { |
| d += dinc1; |
| x += xinc1; |
| y += yinc1; |
| } |
| else |
| { |
| d += dinc2; |
| x += xinc2; |
| y += yinc2; |
| } |
| } |
| } |
| |
| void lcd_clearline( 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; |
| |
| deltax = abs(x2 - x1); |
| deltay = abs(y2 - y1); |
| |
| if(deltax >= deltay) |
| { |
| numpixels = deltax; |
| d = 2 * deltay - deltax; |
| dinc1 = deltay * 2; |
| dinc2 = (deltay - deltax) * 2; |
| xinc1 = 1; |
| xinc2 = 1; |
| yinc1 = 0; |
| yinc2 = 1; |
| } |
| else |
| { |
| numpixels = deltay; |
| d = 2 * deltax - deltay; |
| dinc1 = deltax * 2; |
| dinc2 = (deltax - deltay) * 2; |
| xinc1 = 0; |
| xinc2 = 1; |
| yinc1 = 1; |
| yinc2 = 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++) |
| { |
| CLEAR_PIXEL(x,y); |
| |
| if(d < 0) |
| { |
| d += dinc1; |
| x += xinc1; |
| y += yinc1; |
| } |
| else |
| { |
| d += dinc2; |
| x += xinc2; |
| y += yinc2; |
| } |
| } |
| } |
| |
| /* |
| * Set a single pixel |
| */ |
| void lcd_drawpixel(int x, int y) |
| { |
| DRAW_PIXEL(x,y); |
| } |
| |
| /* |
| * Clear a single pixel |
| */ |
| void lcd_clearpixel(int x, int y) |
| { |
| CLEAR_PIXEL(x,y); |
| } |
| |
| /* |
| * Invert a single pixel |
| */ |
| void lcd_invertpixel(int x, int y) |
| { |
| INVERT_PIXEL(x,y); |
| } |
| |
| 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) |
| { |
| 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(x,y,string,STYLE_INVERT); |
| } |
| else |
| lcd_puts(x,y,string); |
| |
| 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 = strlen(string); |
| s->offset = 0; |
| s->startx = x; |
| s->backward = false; |
| scrolling_lines |= (1<<y); |
| } |
| else |
| /* force a bit switch-off since it doesn't scroll */ |
| scrolling_lines &= ~(1<<y); |
| } |
| |
| void lcd_stop_scroll(void) |
| { |
| scrolling_lines=0; |
| } |
| |
| 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 |
| }; |
| |
| 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; |
| } |
| static void scroll_thread(void) |
| { |
| struct font* pf; |
| struct scrollinfo* s; |
| int index; |
| int xpos, ypos; |
| |
| /* initialize scroll struct array */ |
| scrolling_lines = 0; |
| |
| while ( 1 ) { |
| for ( index = 0; index < SCROLLABLE_LINES; index++ ) { |
| /* really scroll? */ |
| if ( !(scrolling_lines&(1<<index)) ) |
| continue; |
| |
| s = &scroll[index]; |
| |
| /* check pause */ |
| if (TIME_BEFORE(current_tick, s->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; |
| } |
| |
| lcd_clearrect(xpos, ypos, LCD_WIDTH - xpos, pf->height); |
| lcd_putsxyofs(xpos, ypos, s->offset, s->line); |
| if (s->invert) |
| lcd_invertrect(xpos, ypos, LCD_WIDTH - xpos, pf->height); |
| lcd_update_rect(xpos, ypos, LCD_WIDTH - xpos, pf->height); |
| } |
| |
| sleep(scroll_ticks); |
| } |
| } |
| |
| #endif |