067262dbf0
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3824 a1c6a512-1295-4272-9138-f99709370657
879 lines
22 KiB
C
879 lines
22 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Alan Korr
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#ifdef HAVE_LCD_BITMAP
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#include "lcd.h"
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#include "kernel.h"
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#include "thread.h"
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#include <string.h>
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#include <stdlib.h>
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#include "file.h"
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#include "debug.h"
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#include "system.h"
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#include "font.h"
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#include "hwcompat.h"
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/*** definitions ***/
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#define LCD_SET_LOWER_COLUMN_ADDRESS ((char)0x00)
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#define LCD_SET_HIGHER_COLUMN_ADDRESS ((char)0x10)
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#define LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO ((char)0x20)
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#define LCD_SET_POWER_CONTROL_REGISTER ((char)0x28)
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#define LCD_SET_DISPLAY_START_LINE ((char)0x40)
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#define LCD_SET_CONTRAST_CONTROL_REGISTER ((char)0x81)
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#define LCD_SET_SEGMENT_REMAP ((char)0xA0)
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#define LCD_SET_LCD_BIAS ((char)0xA2)
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#define LCD_SET_ENTIRE_DISPLAY_OFF ((char)0xA4)
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#define LCD_SET_ENTIRE_DISPLAY_ON ((char)0xA5)
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#define LCD_SET_NORMAL_DISPLAY ((char)0xA6)
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#define LCD_SET_REVERSE_DISPLAY ((char)0xA7)
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#define LCD_SET_MULTIPLEX_RATIO ((char)0xA8)
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#define LCD_SET_BIAS_TC_OSC ((char)0xA9)
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#define LCD_SET_1OVER4_BIAS_RATIO ((char)0xAA)
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#define LCD_SET_INDICATOR_OFF ((char)0xAC)
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#define LCD_SET_INDICATOR_ON ((char)0xAD)
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#define LCD_SET_DISPLAY_OFF ((char)0xAE)
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#define LCD_SET_DISPLAY_ON ((char)0xAF)
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#define LCD_SET_PAGE_ADDRESS ((char)0xB0)
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#define LCD_SET_COM_OUTPUT_SCAN_DIRECTION ((char)0xC0)
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#define LCD_SET_TOTAL_FRAME_PHASES ((char)0xD2)
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#define LCD_SET_DISPLAY_OFFSET ((char)0xD3)
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#define LCD_SET_READ_MODIFY_WRITE_MODE ((char)0xE0)
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#define LCD_SOFTWARE_RESET ((char)0xE2)
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#define LCD_NOP ((char)0xE3)
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#define LCD_SET_END_OF_READ_MODIFY_WRITE_MODE ((char)0xEE)
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/* LCD command codes */
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#define LCD_CNTL_RESET 0xe2 /* Software reset */
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#define LCD_CNTL_POWER 0x2f /* Power control */
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#define LCD_CNTL_CONTRAST 0x81 /* Contrast */
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#define LCD_CNTL_OUTSCAN 0xc8 /* Output scan direction */
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#define LCD_CNTL_SEGREMAP 0xa1 /* Segment remap */
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#define LCD_CNTL_DISPON 0xaf /* Display on */
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#define LCD_CNTL_PAGE 0xb0 /* Page address */
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#define LCD_CNTL_HIGHCOL 0x10 /* Upper column address */
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#define LCD_CNTL_LOWCOL 0x00 /* Lower column address */
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#define SCROLL_SPACING 3
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#define SCROLLABLE_LINES 10
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struct scrollinfo {
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char line[MAX_PATH + LCD_WIDTH/2 + SCROLL_SPACING + 2];
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int len; /* length of line in chars */
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int width; /* length of line in pixels */
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int offset;
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int startx;
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int starty;
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bool backward; /* scroll presently forward or backward? */
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bool bidir;
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bool invert; /* invert the scrolled text */
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long start_tick;
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};
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static volatile int scrolling_lines=0; /* Bitpattern of which lines are scrolling */
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static void scroll_thread(void);
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static char scroll_stack[DEFAULT_STACK_SIZE];
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static char scroll_name[] = "scroll";
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static char scroll_speed = 8; /* updates per second */
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static int scroll_delay = HZ/2; /* ticks delay before start */
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static char scroll_step = 6; /* pixels per scroll step */
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static int bidir_limit = 50; /* percent */
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static struct scrollinfo scroll[SCROLLABLE_LINES];
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static int xmargin = 0;
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static int ymargin = 0;
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static int curfont = FONT_SYSFIXED;
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#ifndef SIMULATOR
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static
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#endif
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unsigned char lcd_framebuffer[LCD_WIDTH][LCD_HEIGHT/8];
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/* All zeros and ones bitmaps for area filling */
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static unsigned char zeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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static unsigned char ones[8] = { 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff};
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int lcd_default_contrast(void)
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{
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#ifdef SIMULATOR
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return 30;
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#else
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return (read_hw_mask() & LCD_CONTRAST_BIAS) ? 31 : 49;
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#endif
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}
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#ifdef SIMULATOR
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void lcd_init(void)
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{
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create_thread(scroll_thread, scroll_stack,
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sizeof(scroll_stack), scroll_name);
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}
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#else
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/*
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* Initialize LCD
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*/
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void lcd_init (void)
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{
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/* Initialize PB0-3 as output pins */
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PBCR2 &= 0xff00; /* MD = 00 */
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PBIOR |= 0x000f; /* IOR = 1 */
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/* inits like the original firmware */
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lcd_write(true, LCD_SOFTWARE_RESET);
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lcd_write(true, LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO + 4);
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lcd_write(true, LCD_SET_1OVER4_BIAS_RATIO + 0); /* force 1/4 bias: 0 */
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lcd_write(true, LCD_SET_POWER_CONTROL_REGISTER + 7); /* power control register: op-amp=1, regulator=1, booster=1 */
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lcd_write(true, LCD_SET_DISPLAY_ON);
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lcd_write(true, LCD_SET_NORMAL_DISPLAY);
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lcd_write(true, LCD_SET_SEGMENT_REMAP + 1); /* mirror horizontal: 1 */
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lcd_write(true, LCD_SET_COM_OUTPUT_SCAN_DIRECTION + 8); /* mirror vertical: 1 */
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lcd_write(true, LCD_SET_DISPLAY_START_LINE + 0);
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lcd_set_contrast(lcd_default_contrast());
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lcd_write(true, LCD_SET_PAGE_ADDRESS);
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lcd_write(true, LCD_SET_LOWER_COLUMN_ADDRESS + 0);
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lcd_write(true, LCD_SET_HIGHER_COLUMN_ADDRESS + 0);
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lcd_clear_display();
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lcd_update();
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create_thread(scroll_thread, scroll_stack,
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sizeof(scroll_stack), scroll_name);
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}
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/*
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* Update the display.
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* This must be called after all other LCD functions that change the display.
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*/
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void lcd_update (void) __attribute__ ((section (".icode")));
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void lcd_update (void)
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{
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int x, y;
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/* Copy display bitmap to hardware */
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for (y = 0; y < LCD_HEIGHT/8; y++)
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{
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lcd_write (true, LCD_CNTL_PAGE | (y & 0xf));
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lcd_write (true, LCD_CNTL_HIGHCOL);
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lcd_write (true, LCD_CNTL_LOWCOL);
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for (x = 0; x < LCD_WIDTH; x++)
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lcd_write (false, lcd_framebuffer[x][y]);
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}
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}
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/*
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* Update a fraction of the display.
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*/
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void lcd_update_rect (int, int, int, int) __attribute__ ((section (".icode")));
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void lcd_update_rect (int x_start, int y,
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int width, int height)
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{
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int ymax;
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int xmax;
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int x;
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/* The Y coordinates have to work on even 8 pixel rows */
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ymax = (y + height)/8;
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y /= 8;
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xmax = x_start + width;
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if(xmax > LCD_WIDTH)
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xmax = LCD_WIDTH;
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if(ymax >= LCD_HEIGHT/8)
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ymax = LCD_HEIGHT/8-1;
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/* Copy specified rectange bitmap to hardware */
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for (; y <= ymax; y++)
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{
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lcd_write (true, LCD_CNTL_PAGE | (y & 0xf));
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lcd_write (true, LCD_CNTL_HIGHCOL | ((x_start>>4) & 0xf));
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lcd_write (true, LCD_CNTL_LOWCOL | (x_start & 0xf));
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for (x = x_start; x < xmax; x++)
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lcd_write (false, lcd_framebuffer[x][y]);
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}
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}
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void lcd_set_contrast(int val)
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{
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lcd_write(true, LCD_CNTL_CONTRAST);
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lcd_write(true, val);
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}
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void lcd_set_invert_display(bool yesno)
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{
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if (yesno)
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lcd_write(true, LCD_SET_REVERSE_DISPLAY);
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else
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lcd_write(true, LCD_SET_NORMAL_DISPLAY);
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}
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/**
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* Rolls up the lcd display by the specified amount of lines.
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* Lines that are rolled out over the top of the screen are
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* rolled in from the bottom again. This is a hardware
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* remapping only and all operations on the lcd are affected.
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* ->
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* @param int lines - The number of lines that are rolled.
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* The value must be 0 <= pixels < LCD_HEIGHT.
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*/
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void lcd_roll(int lines)
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{
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lcd_write(true, LCD_SET_DISPLAY_START_LINE | (lines & (LCD_HEIGHT-1)));
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}
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#endif /* SIMULATOR */
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void lcd_clear_display (void)
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{
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memset (lcd_framebuffer, 0, sizeof lcd_framebuffer);
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scrolling_lines = 0;
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}
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void lcd_setmargins(int x, int y)
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{
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xmargin = x;
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ymargin = y;
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}
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int lcd_getxmargin(void)
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{
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return xmargin;
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}
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int lcd_getymargin(void)
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{
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return ymargin;
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}
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void lcd_setfont(int newfont)
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{
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curfont = newfont;
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}
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int lcd_getstringsize(unsigned char *str, int *w, int *h)
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{
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struct font* pf = font_get(curfont);
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int ch;
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int width = 0;
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while((ch = *str++)) {
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/* check input range*/
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if (ch < pf->firstchar || ch >= pf->firstchar+pf->size)
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ch = pf->defaultchar;
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ch -= pf->firstchar;
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/* get proportional width and glyph bits*/
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width += pf->width? pf->width[ch]: pf->maxwidth;
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}
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if ( w )
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*w = width;
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if ( h )
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*h = pf->height;
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return width;
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}
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/* put a string at a given char position */
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void lcd_puts(int x, int y, unsigned char *str)
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{
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lcd_puts_style(x, y, str, STYLE_DEFAULT);
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}
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void lcd_puts_style(int x, int y, unsigned char *str, int style)
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{
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int xpos,ypos,w,h;
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#if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS)
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/* We make the simulator truncate the string if it reaches the right edge,
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as otherwise it'll wrap. The real target doesn't wrap. */
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char buffer[12];
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if(strlen(str)+x > 11 ) {
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strncpy(buffer, str, sizeof buffer);
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buffer[11-x]=0;
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str = buffer;
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}
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xmargin = 0;
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ymargin = 8;
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#endif
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if(!str || !str[0])
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return;
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lcd_getstringsize(str, &w, &h);
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xpos = xmargin + x*w / strlen(str);
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ypos = ymargin + y*h;
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lcd_putsxy(xpos, ypos, str);
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lcd_clearrect(xpos + w, ypos, LCD_WIDTH - (xpos + w), h);
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if (style & STYLE_INVERT)
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lcd_invertrect(xpos, ypos, LCD_WIDTH - xpos, h);
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#if defined(SIMULATOR) && defined(HAVE_LCD_CHARCELLS)
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lcd_update();
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#endif
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}
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/* put a string at a given pixel position, skipping first ofs pixel columns */
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static void lcd_putsxyofs(int x, int y, int ofs, unsigned char *str)
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{
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int ch;
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struct font* pf = font_get(curfont);
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while ((ch = *str++) != '\0' && x < LCD_WIDTH)
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{
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int width;
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/* check input range */
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if (ch < pf->firstchar || ch >= pf->firstchar+pf->size)
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ch = pf->defaultchar;
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ch -= pf->firstchar;
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/* no partial-height drawing for now... */
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if (y + pf->height > LCD_HEIGHT)
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break;
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/* get proportional width and glyph bits */
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width = pf->width ? pf->width[ch] : pf->maxwidth;
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width = MIN (width, LCD_WIDTH - x);
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if (ofs != 0)
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{
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if (ofs > width)
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{
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ofs -= width;
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continue;
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}
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width -= ofs;
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}
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if (width > 0)
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{
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int rows = (pf->height + 7) / 8;
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bitmap_t* bits = pf->bits +
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(pf->offset ? pf->offset[ch] : (pf->height * ch));
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lcd_bitmap (((unsigned char*) bits) + ofs*rows, x, y,
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width, pf->height, true);
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x += width;
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}
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ofs = 0;
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}
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}
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/* put a string at a given pixel position */
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void lcd_putsxy(int x, int y, unsigned char *str)
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{
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lcd_putsxyofs(x, y, 0, str);
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}
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/*
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* All bitmaps have this format:
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* Bits within a byte are arranged veritcally, LSB at top.
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* Bytes are stored in column-major format, with byte 0 at top left,
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* byte 1 is 2nd from top, etc. Bytes following left-most column
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* starts 2nd left column, etc.
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*
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* Note: The HW takes bitmap bytes in row-major order.
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*
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* Memory copy of display bitmap
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*/
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/*
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* Draw a bitmap at (x, y), size (nx, ny)
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* if 'clear' is true, clear destination area first
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*/
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void lcd_bitmap (unsigned char *src, int x, int y, int nx, int ny,
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bool clear) __attribute__ ((section (".icode")));
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void lcd_bitmap (unsigned char *src, int x, int y, int nx, int ny,
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bool clear)
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{
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unsigned char *dst;
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unsigned char *dst2;
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unsigned int data, mask, mask2, mask3, mask4;
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int shift;
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if (((unsigned)x >= LCD_WIDTH) || ((unsigned)y >= LCD_HEIGHT))
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return;
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if (((unsigned)(x + nx)) >= LCD_WIDTH)
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nx = LCD_WIDTH - x;
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if (((unsigned)(y + ny)) >= LCD_HEIGHT)
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ny = LCD_HEIGHT - y;
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shift = y & 7;
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dst2 = &lcd_framebuffer[x][y/8];
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ny += shift;
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/* Calculate bit masks */
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mask4 = ~(0xfe << ((ny-1) & 7));
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if (clear)
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{
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mask = ~(0xff << shift);
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mask2 = 0;
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mask3 = ~mask4;
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if (ny <= 8)
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mask3 |= mask;
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}
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else
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mask = mask2 = mask3 = 0xff;
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/* Loop for each column */
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for (x = 0; x < nx; x++)
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{
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dst = dst2;
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dst2 += LCD_HEIGHT/8;
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data = 0;
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y = 0;
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if (ny > 8)
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{
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/* First partial row */
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data = *src++ << shift;
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*dst = (*dst & mask) | data;
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data >>= 8;
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dst++;
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/* Intermediate rows */
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for (y = 8; y < ny-8; y += 8)
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{
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data |= *src++ << shift;
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*dst = (*dst & mask2) | data;
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data >>= 8;
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dst++;
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}
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}
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/* Last partial row */
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if (y + shift < ny)
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data |= *src++ << shift;
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*dst = (*dst & mask3) | (data & mask4);
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}
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}
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/*
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* Draw a rectangle with upper left corner at (x, y)
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* and size (nx, ny)
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*/
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void lcd_drawrect (int x, int y, int nx, int ny)
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{
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int i;
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if (x > LCD_WIDTH)
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return;
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if (y > LCD_HEIGHT)
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return;
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if (x + nx > LCD_WIDTH)
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nx = LCD_WIDTH - x;
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if (y + ny > LCD_HEIGHT)
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ny = LCD_HEIGHT - y;
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/* vertical lines */
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for (i = 0; i < ny; i++) {
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DRAW_PIXEL(x, (y + i));
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DRAW_PIXEL((x + nx - 1), (y + i));
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}
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/* horizontal lines */
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for (i = 0; i < nx; i++) {
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DRAW_PIXEL((x + i),y);
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DRAW_PIXEL((x + i),(y + ny - 1));
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}
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}
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/*
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* 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));
|
|
}
|
|
|
|
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, unsigned char *string)
|
|
{
|
|
lcd_puts_scroll_style(x, y, string, STYLE_DEFAULT);
|
|
}
|
|
|
|
void lcd_puts_scroll_style(int x, int y, unsigned char *string, int style)
|
|
{
|
|
struct scrollinfo* s;
|
|
int w, h;
|
|
int index;
|
|
int free_index=0;
|
|
|
|
DEBUGF("puts_scroll_style: %s\n", string);
|
|
|
|
for (index = 0; index < SCROLLABLE_LINES; index++) {
|
|
s = &scroll[index];
|
|
|
|
if (scrolling_lines&(1<<index)) {
|
|
if (s->starty == y) {
|
|
/* we prefer to re-use an existing index with the
|
|
same y-position */
|
|
free_index=index;
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
/* remember the last unused one */
|
|
free_index=index;
|
|
}
|
|
}
|
|
index=free_index;
|
|
s = &scroll[index]; /* get the proper 's' */
|
|
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->starty = y;
|
|
s->backward = false;
|
|
scrolling_lines |= (1<<index);
|
|
}
|
|
else
|
|
/* force a bit switch-off since it doesn't scroll */
|
|
scrolling_lines &= ~(1<<index);
|
|
}
|
|
|
|
void lcd_stop_scroll(void)
|
|
{
|
|
scrolling_lines=0;
|
|
}
|
|
|
|
void lcd_scroll_speed(int speed)
|
|
{
|
|
scroll_speed = 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 scrollinfo* s;
|
|
int index;
|
|
int w, h;
|
|
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;
|
|
|
|
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 - xmargin)) {
|
|
/* at end of line */
|
|
s->offset = s->width - (LCD_WIDTH - xmargin);
|
|
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_getstringsize(s->line, &w, &h);
|
|
xpos = xmargin + s->startx * w / s->len;
|
|
ypos = ymargin + s->starty * h;
|
|
|
|
lcd_clearrect(xpos, ypos, LCD_WIDTH - xmargin, h);
|
|
lcd_putsxyofs(xpos, ypos, s->offset, s->line);
|
|
if (s->invert)
|
|
lcd_invertrect(xpos, ypos, LCD_WIDTH - xmargin, h);
|
|
lcd_update_rect(xpos, ypos, LCD_WIDTH - xmargin, h);
|
|
}
|
|
|
|
sleep(HZ/scroll_speed);
|
|
}
|
|
}
|
|
|
|
#endif
|