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lcd_buf_draw.c
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lcd_buf_draw.c
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/*
* Copyright (c) 2009 Openmoko Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdarg.h>
#include <inttypes.h>
#include <grifo.h>
#include "guilib.h"
#include "ustring.h"
#include "history.h"
#include "search.h"
#include "glyph.h"
#include "wikilib.h"
#include "restricted.h"
#include "wiki_info.h"
#include "bmf.h"
#include "lcd_buf_draw.h"
#include "search.h"
#include "bigram.h"
#include "utf8.h"
#include "highlight.h"
#define MAX_SCROLL_SECONDS 3
#define LIST_SCROLL_SPEED_FRICTION 0.3
#define ARTICLE_SCROLL_SPEED_FRICTION 0.3
#define SCROLL_UNIT_SECOND 0.1
#define LINK_INVERT_ACTIVATION_TIME_THRESHOLD 0.1
#define LIST_LINK_INVERT_ACTIVATION_TIME_THRESHOLD 0.35
#define RESTRICTED_MARK_LINK 0xFFFFFF
#define PREVIOUS_ARTICLE_LINK 0xFFFFFE
#define EXTERNAL_ARTICLE_LINK 0xFFFFFD
#define SHOW_LANGUAGE_LINK 0xFFFFFC
#define HIDE_LANGUAGE_LINK 0xFFFFFB
#define PREVIOUS_ARTICLE_LINKABLE_SIZE 20
#define ARTICLE_LINK_SOMETHING_BEFORE 0x20
#define ARTICLE_LINK_NOTHING_BEFORE 0x10
#define ARTICLE_LINK_SOMETHING_AFTER 0x02
#define ARTICLE_LINK_NOTHING_AFTER 0x01
extern long finger_move_speed;
extern int last_display_mode;
extern int display_mode;
pcffont_bmf_t pcfFonts[FONT_COUNT];
static int lcd_draw_buf_inited = 0;
LCD_DRAW_BUF lcd_draw_buf;
unsigned char * file_buffer;
int restricted_article = 0;
int lcd_draw_buf_pos = 0;
int lcd_draw_cur_y_pos = 0;
int lcd_draw_init_y_pos = 0;
int request_display_next_page = 0;
int request_y_pos = 0;
int cur_render_y_pos = 0;
int article_start_y_pos = 0;
int bShowLanguageLinks = 0;
int bShowPositioner = 0;
ARTICLE_LINK articleLink[MAX_ARTICLE_LINKS];
EXTERNAL_LINK externalLink[MAX_EXTERNAL_LINKS];
unsigned char articleLinkBeforeAfter[MAX_ARTICLE_LINKS];
PARTICLE_RENDER_INFO pArticleRenderInfo;
int nArticleRenderedLines = 0;
int link_to_be_activated = -1;
unsigned long link_to_be_activated_start_time = 0;
int link_to_be_inverted = -1;
unsigned long link_to_be_inverted_start_time = 0;
int link_currently_activated = -1;
int link_currently_inverted = -1;
int article_link_count;
int language_link_count;
int display_first_page = 0;
void display_link_article(long idx_article);
void drawline_in_framebuffer_copy(unsigned char *buffer,int start_x,int start_y,int end_x,int end_y);
void buf_draw_char_external(LCD_DRAW_BUF *lcd_draw_buf_external,ucs4_t u,int start_x,int end_x,int start_y,int end_y);
void repaint_framebuffer(unsigned char *buf, int pos, int b_repaint_invert_link);
void repaint_invert_link(void);
char* FontFile(int idx);
int framebuffer_size();
int framebuffer_width();
int framebuffer_height();
unsigned char *framebuffer_copy;
char msg_out[1024];
long article_scroll_increment;
unsigned long time_scroll_article_last=0;
int stop_render_article = 0;
int b_show_scroll_bar = 0;
long saved_idx_article = 0;
long saved_prev_idx_article = 0;
#define MIN_BAR_LEN 20
void show_scroll_bar(int bShow)
{
int bar_len;
int bar_pos;
int i;
int byte_idx;
char c;
static char frame_bytes[LCD_HEIGHT];
static int b_frame_bytes;
if (lcd_draw_buf.current_y < LCD_HEIGHT)
return;
if (bShow <= 0)
{
if (b_frame_bytes)
{
for (i = 0; i < LCD_HEIGHT; i++)
{
byte_idx = (236 + LCD_BUFFER_WIDTH * i) / 8;
lcd_framebuffer_set_byte(byte_idx, frame_bytes[i]);
}
b_frame_bytes = 0;
}
}
else
{
bar_len = LCD_HEIGHT * LCD_HEIGHT / lcd_draw_buf.current_y;
if (bar_len > LCD_HEIGHT)
bar_len = LCD_HEIGHT;
else if (bar_len < MIN_BAR_LEN)
bar_len = MIN_BAR_LEN;
if (lcd_draw_buf.current_y > LCD_HEIGHT)
bar_pos = (LCD_HEIGHT - bar_len) * lcd_draw_cur_y_pos / (lcd_draw_buf.current_y - LCD_HEIGHT);
else
bar_pos = 0;
if (bar_pos < 0)
bar_pos = 0;
else if (bar_pos + bar_len > LCD_HEIGHT)
bar_pos = LCD_HEIGHT - bar_len;
for (i = 0; i < LCD_HEIGHT; i++)
{
if (bar_pos <= i && i < bar_pos + bar_len)
c = 0x07;
else
c = 0;
byte_idx = (236 + LCD_BUFFER_WIDTH * i) / 8;
frame_bytes[i] = lcd_framebuffer_get_byte(byte_idx);
lcd_framebuffer_set_byte(byte_idx, (frame_bytes[i] & 0xF0) | c);
}
b_frame_bytes = 1;
}
}
void load_all_fonts()
{
int i;
if (!lcd_draw_buf_inited)
init_lcd_draw_buf();
for (i=0; i < FONT_COUNT; i++)
{
if (pcfFonts[i].fd == FONT_FD_NOT_INITED) {
pcfFonts[i].fd = load_bmf(&pcfFonts[i]);
if (pcfFonts[i].fd < 0) {
fatal_error("Missing font file: %s", pcfFonts[i].file);
}
}
}
}
void init_lcd_draw_buf()
{
int i,framebuffersize;
if (!lcd_draw_buf_inited)
{
framebuffersize = framebuffer_size();
framebuffer_copy = (unsigned char*)memory_allocate(framebuffersize, "bufdraw1");
lcd_draw_buf.screen_buf = (unsigned char *)memory_allocate(LCD_BUF_WIDTH_BYTES * LCD_BUF_HEIGHT_PIXELS, "bufdraw2");
if (!framebuffer_copy || !lcd_draw_buf.screen_buf)
fatal_error("lcd_draw_buf allocation error");
for (i=0; i < FONT_COUNT; i++)
{
pcfFonts[i].file = FontFile(i);
if (!pcfFonts[i].file[0])
{
pcfFonts[i].fd = -1;
}
else
{
pcfFonts[i].fd = FONT_FD_NOT_INITED;
if (i == ITALIC_FONT_IDX - 1)
{
pcfFonts[i].bPartialFont = 1;
pcfFonts[i].supplement_font = &pcfFonts[DEFAULT_ALL_FONT_IDX - 1];
}
else if (i == DEFAULT_FONT_IDX - 1)
{
pcfFonts[i].bPartialFont = 1;
pcfFonts[i].supplement_font = &pcfFonts[DEFAULT_ALL_FONT_IDX - 1];
}
else if (i == TITLE_FONT_IDX - 1)
{
pcfFonts[i].bPartialFont = 1;
pcfFonts[i].supplement_font = &pcfFonts[TITLE_ALL_FONT_IDX - 1];
}
else if (i == SUBTITLE_FONT_IDX - 1)
{
pcfFonts[i].bPartialFont = 1;
pcfFonts[i].supplement_font = &pcfFonts[SUBTITLE_ALL_FONT_IDX - 1];
}
else
{
pcfFonts[i].bPartialFont = 0;
}
}
}
pArticleRenderInfo = (PARTICLE_RENDER_INFO)memory_allocate(sizeof(ARTICLE_RENDER_INFO) * MAX_LINES_PER_ARTICLE, "renderinfo");
if (!pArticleRenderInfo)
fatal_error("pArticleRenderInfo allocation error");
lcd_draw_buf_inited = 1;
}
lcd_draw_buf.current_x = 0;
lcd_draw_buf.current_y = 0;
lcd_draw_buf.drawing = 0;
lcd_draw_buf.pPcfFont = NULL;
lcd_draw_buf.line_height = 0;
lcd_draw_buf.y_adjustment = 0;
nArticleRenderedLines = 0;
if (lcd_draw_buf.screen_buf)
memset(lcd_draw_buf.screen_buf, 0, LCD_BUF_WIDTH_BYTES * LCD_BUF_HEIGHT_PIXELS);
}
void draw_string(const unsigned char *s)
{
//ucs4_t u;
const unsigned char **p = &s;
buf_draw_UTF8_str(p);
//while (**p && (u = UTF8_to_UCS4(p)))
//{
// buf_draw_char(u);
//}
}
void draw_article_positioner(int y_pos)
{
static int last_positioner_y = 0;
if (!bShowPositioner)
return;
if (y_pos == 0)
last_positioner_y = article_start_y_pos;
else
{
while (y_pos - last_positioner_y - article_start_y_pos > LCD_HEIGHT / 2)
{
last_positioner_y += LCD_HEIGHT / 2;
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 0, last_positioner_y - 2);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 0, last_positioner_y - 1);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 1, last_positioner_y - 1);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 0, last_positioner_y);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 1, last_positioner_y);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 2, last_positioner_y);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 0, last_positioner_y + 1);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 1, last_positioner_y + 1);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, 0, last_positioner_y + 2);
}
}
}
void init_file_buffer()
{
file_buffer = (unsigned char*)memory_allocate(FILE_BUFFER_SIZE, "bufdraw3");
if (!file_buffer)
fatal_error("file_buffer allocation error");
}
// default font is indexed 0, font id 0 is indexed 1, etc.
char* FontFile(int idx) {
switch(idx)
{
case ITALIC_FONT_IDX - 1:
return FONT_FILE_ITALIC;
break;
case DEFAULT_FONT_IDX - 1:
return FONT_FILE_DEFAULT;
break;
case DEFAULT_ALL_FONT_IDX - 1:
return FONT_FILE_DEFAULT_ALL;
break;
case TITLE_FONT_IDX - 1:
return FONT_FILE_TITLE;
break;
case SUBTITLE_FONT_IDX - 1:
return FONT_FILE_SUBTITLE;
break;
case TITLE_ALL_FONT_IDX - 1:
return FONT_FILE_TITLE_ALL;
break;
case SUBTITLE_ALL_FONT_IDX - 1:
return FONT_FILE_SUBTITLE_ALL;
break;
default:
return "";
break;
}
}
void buf_draw_UTF8_str_in_copy_buffer(unsigned char *framebuffer_copy, const unsigned char **pUTF8,
int start_x,int end_x,int start_y,int end_y,int offset_x,int font_idx)
{
ucs4_t u;
LCD_DRAW_BUF lcd_draw_buf_external;
lcd_draw_buf_external.current_x = start_x+offset_x;
lcd_draw_buf_external.current_y = start_y+2;
lcd_draw_buf_external.pPcfFont = &pcfFonts[font_idx - 1];
lcd_draw_buf_external.screen_buf = framebuffer_copy;
lcd_draw_buf_external.line_height = pcfFonts[font_idx - 1].Fmetrics.linespace + LINE_SPACE_ADDON;
lcd_draw_buf_external.y_adjustment = 0;
while (**pUTF8 > MAX_ESC_CHAR)
{
if ((u = UTF8_to_UCS4(pUTF8)))
{
buf_draw_char_external(&lcd_draw_buf_external,u,start_x,end_x,start_y,end_y);
}
}
}
void buf_draw_UTF8_str(const unsigned char **pUTF8)
{
unsigned char c, c2;
char c3;
long v_line_bottom;
ucs4_t u;
int font_idx;
int nWidth;
int nHeight;
int nBytes;
int nImageY;
int i, j;
int nByteIdx, nBitIdx;
if (NULL == pUTF8 || NULL == *pUTF8) {
return;
}
c = **pUTF8;
if (c <= MAX_ESC_CHAR)
{
(*pUTF8)++;
switch(c)
{
case ESC_0_SPACE_LINE: /* space line */
c2 = **pUTF8;
(*pUTF8)++;
lcd_draw_buf.current_x = 0;
lcd_draw_buf.current_y += lcd_draw_buf.actual_height;
lcd_draw_buf.line_height = c2;
lcd_draw_buf.actual_height = lcd_draw_buf.line_height;
lcd_draw_buf.y_adjustment = 0;
if (lcd_draw_buf.current_y + lcd_draw_buf.line_height >= LCD_BUF_HEIGHT_PIXELS)
lcd_draw_buf.current_y = LCD_BUF_HEIGHT_PIXELS - lcd_draw_buf.line_height - 1;
draw_article_positioner(lcd_draw_buf.current_y);
break;
case ESC_1_NEW_LINE_DEFAULT_FONT: /* new line with default font and line space */
lcd_draw_buf.current_x = 0;
lcd_draw_buf.current_y += lcd_draw_buf.actual_height;
lcd_draw_buf.pPcfFont = &pcfFonts[DEFAULT_FONT_IDX - 1];
lcd_draw_buf.line_height = pcfFonts[DEFAULT_FONT_IDX - 1].Fmetrics.linespace + LINE_SPACE_ADDON;
lcd_draw_buf.actual_height = lcd_draw_buf.line_height;
lcd_draw_buf.y_adjustment = 0;
if (lcd_draw_buf.current_y + lcd_draw_buf.line_height >= LCD_BUF_HEIGHT_PIXELS)
lcd_draw_buf.current_y = LCD_BUF_HEIGHT_PIXELS - lcd_draw_buf.line_height - 1;
draw_article_positioner(lcd_draw_buf.current_y);
break;
case ESC_2_NEW_LINE_SAME_FONT: /* new line with previous font and line space */
lcd_draw_buf.current_x = 0;
lcd_draw_buf.current_y += lcd_draw_buf.actual_height;
lcd_draw_buf.actual_height = lcd_draw_buf.line_height;
lcd_draw_buf.y_adjustment = 0;
if (lcd_draw_buf.current_y + lcd_draw_buf.line_height >= LCD_BUF_HEIGHT_PIXELS)
lcd_draw_buf.current_y = LCD_BUF_HEIGHT_PIXELS - lcd_draw_buf.line_height - 1;
draw_article_positioner(lcd_draw_buf.current_y);
break;
case ESC_3_NEW_LINE_WITH_FONT: /* new line with specified font and line space */
c2 = **pUTF8;
(*pUTF8)++;
lcd_draw_buf.current_x = 0;
lcd_draw_buf.current_y += lcd_draw_buf.actual_height;
font_idx = c2 & 0x07;
if (font_idx > FONT_COUNT)
font_idx = DEFAULT_FONT_IDX;
lcd_draw_buf.pPcfFont = &pcfFonts[font_idx - 1];
lcd_draw_buf.line_height = c2 >> 3;
lcd_draw_buf.actual_height = lcd_draw_buf.line_height;
lcd_draw_buf.y_adjustment = 0;
if (lcd_draw_buf.current_y + lcd_draw_buf.line_height >= LCD_BUF_HEIGHT_PIXELS)
lcd_draw_buf.current_y = LCD_BUF_HEIGHT_PIXELS - lcd_draw_buf.line_height - 1;
draw_article_positioner(lcd_draw_buf.current_y);
break;
case ESC_4_CHANGE_FONT: /* change font */
c2 = **pUTF8;
(*pUTF8)++;
font_idx = c2 & 0x07;
if (font_idx > FONT_COUNT)
font_idx = DEFAULT_FONT_IDX;
lcd_draw_buf.pPcfFont = &pcfFonts[font_idx - 1];
lcd_draw_buf.y_adjustment = ((signed char)c2 >> 3);
if (lcd_draw_buf.current_y + lcd_draw_buf.line_height + lcd_draw_buf.y_adjustment >= LCD_BUF_HEIGHT_PIXELS)
lcd_draw_buf.y_adjustment = LCD_BUF_HEIGHT_PIXELS - lcd_draw_buf.line_height - lcd_draw_buf.current_y - 1;
if (lcd_draw_buf.current_y + lcd_draw_buf.y_adjustment < lcd_draw_buf.line_height - 1)
lcd_draw_buf.y_adjustment = lcd_draw_buf.line_height - lcd_draw_buf.current_y - 1;
break;
case ESC_5_RESET_TO_DEFAULT_FONT: /* reset to the default font */
lcd_draw_buf.pPcfFont = &pcfFonts[DEFAULT_FONT_IDX - 1];
break;
case ESC_6_RESET_TO_DEFAULT_ALIGN: /* reset to the default vertical alignment */
lcd_draw_buf.x_adjustment = 0;
break;
case ESC_7_FORWARD: /* forward */
c2 = **pUTF8;
(*pUTF8)++;
lcd_draw_buf.current_x += c2;
if (lcd_draw_buf.current_x > LCD_BUF_WIDTH_PIXELS - LCD_LEFT_MARGIN - lcd_draw_buf.x_adjustment)
lcd_draw_buf.current_x = LCD_BUF_WIDTH_PIXELS - LCD_LEFT_MARGIN - lcd_draw_buf.x_adjustment;
break;
case ESC_8_BACKWARD: /* backward */
c2 = **pUTF8;
(*pUTF8)++;
if (lcd_draw_buf.current_x < c2)
lcd_draw_buf.current_x = 0;
else
lcd_draw_buf.current_x -= c2;
break;
case ESC_9_Y_ADJUSTMENT: /* vertical alignment adjustment */
c3 = (char)(**pUTF8);
(*pUTF8)++;
lcd_draw_buf.x_adjustment += c3;
//if (lcd_draw_buf.current_y + lcd_draw_buf.line_height + lcd_draw_buf.y_adjustment >= LCD_BUF_HEIGHT_PIXELS)
// lcd_draw_buf.y_adjustment = LCD_BUF_HEIGHT_PIXELS - lcd_draw_buf.line_height - lcd_draw_buf.current_y - 1;
//if (lcd_draw_buf.current_y + lcd_draw_buf.y_adjustment < lcd_draw_buf.line_height - 1)
// lcd_draw_buf.y_adjustment = lcd_draw_buf.line_height - lcd_draw_buf.current_y - 1;
break;
case ESC_10_HORIZONTAL_LINE: /* drawing horizontal line */
c2 = **pUTF8;
(*pUTF8)++;
if ((long)c2 > lcd_draw_buf.current_x)
c2 = (unsigned char)lcd_draw_buf.current_x;
buf_draw_horizontal_line(lcd_draw_buf.current_x - (unsigned long)c2 + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment,
lcd_draw_buf.current_x + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment);
break;
case ESC_11_VERTICAL_LINE: /* drawing vertical line */
c2 = **pUTF8;
(*pUTF8)++;
v_line_bottom = lcd_draw_buf.current_y + lcd_draw_buf.line_height;
v_line_bottom -= lcd_draw_buf.y_adjustment;
if (v_line_bottom < 0)
v_line_bottom = 0;
if ((long)c2 > v_line_bottom)
c2 = (unsigned char)v_line_bottom;
buf_draw_vertical_line(v_line_bottom - (unsigned long)c2, v_line_bottom - 1);
break;
case ESC_12_FULL_HORIZONTAL_LINE: /* drawing horizontal line from left-most pixel to right-most pixel */
lcd_draw_buf.current_x = 0;
lcd_draw_buf.current_y += lcd_draw_buf.actual_height;
lcd_draw_buf.line_height = 1;
lcd_draw_buf.actual_height = lcd_draw_buf.line_height;
lcd_draw_buf.y_adjustment = 0;
buf_draw_horizontal_line(LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment, LCD_BUF_WIDTH_PIXELS);
break;
case ESC_13_FULL_VERTICAL_LINE: /* drawing vertical line from top of the line to the bottom */
lcd_draw_buf.current_x += 1;
buf_draw_vertical_line(lcd_draw_buf.current_y, lcd_draw_buf.current_y + lcd_draw_buf.line_height - 1);
lcd_draw_buf.current_x += 2;
break;
case ESC_14_BITMAP: /* bitmap */
c2 = **pUTF8;
(*pUTF8)++;
nWidth = c2;
c2 = **pUTF8;
(*pUTF8)++;
nHeight = c2;
c2 = **pUTF8;
(*pUTF8)++;
nHeight |= c2 << 8;
if (lcd_draw_buf.current_x == 0)
lcd_draw_buf.current_x = LCD_EXTRA_LEFT_MARGIN_FOR_IMAGE;
else
lcd_draw_buf.current_x++;
if (lcd_draw_buf.line_height < nHeight + 1)
lcd_draw_buf.actual_height = nHeight + 3;
nImageY = lcd_draw_buf.current_y + 3;
if ((lcd_draw_buf.current_x + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment) % 8 == 0)
{
nBytes = (nWidth + 7) / 8;
if (nBytes > LCD_BUF_WIDTH_BYTES - 1)
nBytes = LCD_BUF_WIDTH_BYTES - 1;
nByteIdx = (lcd_draw_buf.current_x + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment) / 8;
for (i = 0; i < nHeight; i++)
{
memcpy(&lcd_draw_buf.screen_buf[nImageY * LCD_BUF_WIDTH_BYTES + nByteIdx], *pUTF8, nBytes);
*pUTF8 += (nWidth + 7) / 8;
nImageY++;
}
}
else
{
for (i = 0; i < nHeight; i++)
{
for(j = 0; j < nWidth; j++)
{
nByteIdx = j / 8;
nBitIdx = 7 - (j % 8);
if ((*pUTF8)[nByteIdx] & (1 << nBitIdx))
{
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf, lcd_draw_buf.current_x +
LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment + j, nImageY);
}
}
*pUTF8 += (nWidth + 7) / 8;
nImageY++;
}
}
lcd_draw_buf.current_x += nWidth;
break;
default:
break;
}
}
while (**pUTF8 > MAX_ESC_CHAR) /* stop at end of string or escape character */
{
const unsigned char *pTemp = *pUTF8; // save the position before UTF8_to_UCS4 changes pUTF8
if ((u = UTF8_to_UCS4(pUTF8)))
{
if ((lcd_draw_buf.current_x <= 0 || nArticleRenderedLines == 0) && nArticleRenderedLines < MAX_LINES_PER_ARTICLE)
{
nArticleRenderedLines++;
pArticleRenderInfo[nArticleRenderedLines - 1].start_y = lcd_draw_buf.current_y;
pArticleRenderInfo[nArticleRenderedLines - 1].end_y = lcd_draw_buf.current_y + lcd_draw_buf.line_height - 1;
pArticleRenderInfo[nArticleRenderedLines - 1].pBuf = pTemp;
pArticleRenderInfo[nArticleRenderedLines - 1].pPcfFont = lcd_draw_buf.pPcfFont;
}
buf_draw_char(u);
if(display_first_page==0 && lcd_draw_buf.current_y > LCD_HEIGHT + article_start_y_pos)
{
display_first_page = 1;
lcd_draw_cur_y_pos = article_start_y_pos;
finger_move_speed = 0;
repaint_framebuffer(lcd_draw_buf.screen_buf, lcd_draw_cur_y_pos, 0);
if (lcd_draw_init_y_pos < article_start_y_pos)
lcd_draw_init_y_pos = article_start_y_pos;
if (lcd_draw_init_y_pos > article_start_y_pos)
{
display_article_with_pcf(lcd_draw_init_y_pos);
}
}
}
}
}
#define MAX_PIXELS_EACH_SIDE 5
void draw_language_link_arrow()
{
int i, j;
int nPixelsEachSide;
if (bShowLanguageLinks)
nPixelsEachSide = MAX_PIXELS_EACH_SIDE;
else
nPixelsEachSide = 0;
for (i = LCD_TOP_MARGIN; i < LCD_TOP_MARGIN + LANGUAGE_LINK_HEIGHT; i++)
{
if (i == LCD_TOP_MARGIN + 1 || i == LCD_TOP_MARGIN + LANGUAGE_LINK_HEIGHT - 2)
{
for (j = LCD_BUF_WIDTH_PIXELS - LANGUAGE_LINK_WIDTH - LCD_LEFT_MARGIN + 2; j < LCD_BUF_WIDTH_PIXELS - LCD_LEFT_MARGIN - 2; j++)
{
lcd_set_pixel(j, i, LCD_BLACK);
}
}
else if (1 + LCD_TOP_MARGIN < i && i < LCD_TOP_MARGIN + LANGUAGE_LINK_HEIGHT - 2)
{
for (j = LCD_BUF_WIDTH_PIXELS - LANGUAGE_LINK_WIDTH - LCD_LEFT_MARGIN + 1; j < LCD_BUF_WIDTH_PIXELS - LCD_LEFT_MARGIN - 1; j++)
{
lcd_set_pixel(j, i, LCD_BLACK);
}
}
if (8 + LCD_TOP_MARGIN <= i && i <= 8 + LCD_TOP_MARGIN + MAX_PIXELS_EACH_SIDE)
{
if (bShowLanguageLinks)
{
if (nPixelsEachSide >= 0)
{
for (j = -nPixelsEachSide; j <= nPixelsEachSide; j++)
lcd_set_pixel(LCD_BUF_WIDTH_PIXELS - LANGUAGE_LINK_WIDTH - LCD_LEFT_MARGIN + 11 + j, i, LCD_WHITE);
nPixelsEachSide--;
}
}
else
{
if (nPixelsEachSide <= MAX_PIXELS_EACH_SIDE)
{
for (j = -nPixelsEachSide; j <= nPixelsEachSide; j++)
lcd_set_pixel(LCD_BUF_WIDTH_PIXELS - LANGUAGE_LINK_WIDTH - LCD_LEFT_MARGIN + 11 + j, i, LCD_WHITE);
nPixelsEachSide++;
}
}
}
}
}
void repaint_framebuffer(unsigned char *buf, int pos, int b_repaint_invert_link)
{
(void)b_repaint_invert_link; // *** unused argument
int framebuffersize;
framebuffersize = framebuffer_size();
guilib_fb_lock();
//guilib_clear();
memcpy(lcd_get_framebuffer(),buf+(pos < 0 ? 0 : pos)*LCD_BUFFER_WIDTH/8,framebuffersize);
if (display_mode == DISPLAY_MODE_ARTICLE && (language_link_count || restricted_article) && (pos == article_start_y_pos || pos == 0))
{
draw_language_link_arrow();
}
// if (b_repaint_invert_link)
// repaint_invert_link();
if (b_show_scroll_bar)
show_scroll_bar(1);
guilib_fb_unlock();
}
void buf_draw_horizontal_line(unsigned long start_x, unsigned long end_x)
{
unsigned long i;
long h_line_y;
h_line_y = lcd_draw_buf.current_y + lcd_draw_buf.line_height;
h_line_y -= lcd_draw_buf.y_adjustment + 1;
if (end_x > LCD_BUF_WIDTH_PIXELS)
end_x = LCD_BUF_WIDTH_PIXELS;
for(i = start_x;i<end_x;i++)
{
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf,i, h_line_y);
}
}
void buf_draw_vertical_line(unsigned long start_y, unsigned long end_y)
{
unsigned long idx_in_byte;
unsigned char *p;
if (lcd_draw_buf.current_x + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment < LCD_BUF_WIDTH_PIXELS)
{
idx_in_byte = 7 - ((lcd_draw_buf.current_x + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment) & 0x07);
p = lcd_draw_buf.screen_buf + start_y * LCD_BUF_WIDTH_BYTES + ((lcd_draw_buf.current_x + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment)>> 3);
while (start_y <= end_y)
{
*p |= 1 << idx_in_byte;
start_y++;
p += LCD_BUF_WIDTH_BYTES;
}
}
}
char lcd_draw_buf_get_byte(int x, int y)
{
unsigned int byte = (x + LCD_BUFFER_WIDTH * y) / 8;
return lcd_draw_buf.screen_buf[byte];
}
int lcd_draw_buf_get_pixel(int x, int y)
{
unsigned int byte = (x + LCD_BUFFER_WIDTH * y) / 8;
unsigned int bit = (x + LCD_BUFFER_WIDTH * y) % 8;
if (lcd_draw_buf.screen_buf[byte] & (1 << (7 - bit)))
return 1;
else
return 0;
}
void buf_draw_char(ucs4_t u)
{
bmf_bm_t *bitmap = NULL;
charmetric_bmf Cmetrics;
int bytes_to_process;
int x_base;
int y_base;
int x_offset;
int y_offset;
int x_bit_idx;
int i; // bitmap byte index
int j; // bitmap bit index
unsigned char *p; // pointer to lcd draw buffer
if(pres_bmfbm(u, lcd_draw_buf.pPcfFont, &bitmap, &Cmetrics)<0)
{
return;
}
if(u==32)
{
lcd_draw_buf.current_x += Cmetrics.widthDevice;
return;
}
if (bitmap == NULL)
return;
bytes_to_process = Cmetrics.widthBytes * Cmetrics.height;
x_base = lcd_draw_buf.current_x + Cmetrics.LSBearing + LCD_LEFT_MARGIN + lcd_draw_buf.x_adjustment;
if (x_base < LCD_BUF_WIDTH_PIXELS)
{ // only draw the chracter if there is space left before the right margin of the LCD screen
y_base = lcd_draw_buf.current_y + lcd_draw_buf.y_adjustment;
x_offset = 0;
y_offset = lcd_draw_buf.line_height - (lcd_draw_buf.pPcfFont->Fmetrics.descent + Cmetrics.ascent);
x_bit_idx = x_base & 0x07;
//p = lcd_draw_buf.screen_buf + (y_base + y_offset) * LCD_BUF_WIDTH_BYTES + (x_base >> 3);
for (i = 0; i < bytes_to_process; i++)
{
j = 7;
while (j >= 0)
{
if (x_offset >= Cmetrics.widthBits)
{
x_offset = 0;
y_offset++;
p = lcd_draw_buf.screen_buf + (y_base + y_offset) * LCD_BUF_WIDTH_BYTES + x_base;
}
if (x_offset < Cmetrics.width)
{
if ((bitmap[i] & (1 << j)) && x_base + x_offset < LCD_BUF_WIDTH_PIXELS)
{
//*p |= 1 << ((x_base + x_offset) & 0x07);
guilib_buffer_set_pixel(lcd_draw_buf.screen_buf,x_base + x_offset, y_base+y_offset);
}
}
x_offset++;
x_bit_idx++;
if (!(x_bit_idx & 0x07))
{
x_bit_idx = 0;
p++;
}
j--;
}
}
}
lcd_draw_buf.current_x += Cmetrics.widthDevice;
}
int get_external_str_pixel_width(const unsigned char *pIn, int font_idx)
{
bmf_bm_t *bitmap = NULL;
charmetric_bmf Cmetrics;
int width = 0;
ucs4_t u;
const unsigned char **pUTF8 = &pIn;
while (**pUTF8 > MAX_ESC_CHAR)
{
if ((u = UTF8_to_UCS4(pUTF8)))
{
pres_bmfbm(u, &pcfFonts[font_idx - 1], &bitmap, &Cmetrics);
if (bitmap != NULL)
width += Cmetrics.widthDevice;
}
}
return width;
}
void get_external_str_pixel_rectangle(const unsigned char *pIn, int font_idx,
int *start_x, int *start_y, int *end_x, int *end_y)
{
bmf_bm_t *bitmap = NULL;
charmetric_bmf Cmetrics;
ucs4_t u;
const unsigned char **pUTF8 = &pIn;
int width = 0;
int bytes_to_process;
int x_base;
int x_offset;
int y_offset;
int x_bit_idx;
int i; // bitmap byte index
int j; // bitmap bit index
*start_x = -999;
*end_x = -999;
*start_y = -999;
*end_y = -999;
while (**pUTF8 > MAX_ESC_CHAR)
{
if ((u = UTF8_to_UCS4(pUTF8)))
{
pres_bmfbm(u, &pcfFonts[font_idx - 1], &bitmap, &Cmetrics);
if (bitmap != NULL)
{
bytes_to_process = Cmetrics.widthBytes * Cmetrics.height;
x_base = width + Cmetrics.LSBearing;
x_offset = 0;
y_offset = pcfFonts[font_idx - 1].Fmetrics.linespace - (pcfFonts[font_idx - 1].Fmetrics.descent + Cmetrics.ascent);
x_bit_idx = x_base & 0x07;
for (i = 0; i < bytes_to_process; i++)
{
j = 7;
while (j >= 0)
{
if (x_offset >= Cmetrics.widthBits)
{
x_offset = 0;
y_offset++;
}
if (x_offset < Cmetrics.width)
{
if (bitmap[i] & (1 << j))
{
if (*start_x == -999 || *start_x > x_base + x_offset)
*start_x = x_base + x_offset;
if (*start_y == -999 || *start_y > y_offset)
*start_y = y_offset;
if (*end_x < x_base + x_offset)
*end_x = x_base + x_offset;
if (*end_y < y_offset)
*end_y = y_offset;
}
}
x_offset++;
x_bit_idx++;
if (!(x_bit_idx & 0x07))
{
x_bit_idx = 0;
}
j--;
}
}
width += Cmetrics.widthDevice;
}
}
}
}
void buf_draw_char_external(LCD_DRAW_BUF *lcd_draw_buf_external,ucs4_t u,int start_x,int end_x,int start_y,int end_y)
{
(void)start_y; // *** unused argument
(void)end_y; // *** unused argument
bmf_bm_t *bitmap = NULL;
charmetric_bmf Cmetrics;
int bytes_to_process;
int x_base;
int y_base;
int x_offset;
int y_offset;
int x_bit_idx;
int i; // bitmap byte index
int j; // bitmap bit index
unsigned char *p; // pointer to lcd draw buffer
if(pres_bmfbm(u, lcd_draw_buf_external->pPcfFont, &bitmap, &Cmetrics)<0)
return;
if(u==32)
{
lcd_draw_buf_external->current_x += Cmetrics.widthDevice;
return;
}
if (bitmap == NULL)
return;
bytes_to_process = Cmetrics.widthBytes * Cmetrics.height;
x_base = lcd_draw_buf_external->current_x + Cmetrics.LSBearing;
if((lcd_draw_buf_external->current_x + Cmetrics.widthDevice) > end_x)
{
lcd_draw_buf_external->current_x = start_x;
x_base = Cmetrics.LSBearing;
lcd_draw_buf_external->current_y+=lcd_draw_buf_external->line_height;
}
y_base = lcd_draw_buf_external->current_y + lcd_draw_buf_external->y_adjustment;
x_offset = 0;
y_offset = lcd_draw_buf_external->line_height - (lcd_draw_buf_external->pPcfFont->Fmetrics.descent + Cmetrics.ascent);
x_bit_idx = x_base & 0x07;
for (i = 0; i < bytes_to_process; i++)
{
j = 7;
while (j >= 0)
{
if (x_offset >= Cmetrics.widthBits)
{
x_offset = 0;
y_offset++;
}
if (x_offset < Cmetrics.width)
{
if (bitmap[i] & (1 << j))
{
guilib_buffer_set_pixel(lcd_draw_buf_external->screen_buf,x_base + x_offset, y_base+y_offset);
}
}
x_offset++;
x_bit_idx++;
if (!(x_bit_idx & 0x07))
{
x_bit_idx = 0;
p++;
}
j--;
}
}
lcd_draw_buf_external->current_x += Cmetrics.widthDevice;
}
int get_UTF8_char_width(int idxFont, const unsigned char **pContent, long *lenContent, int *nCharBytes)
{
ucs4_t u;
const unsigned char *pBase;
charmetric_bmf Cmetrics;
bmf_bm_t *bitmap = NULL;
pBase = *pContent;
u = UTF8_to_UCS4(pContent);
*nCharBytes = *pContent - pBase;
*lenContent -= *nCharBytes;
pres_bmfbm(u, &pcfFonts[idxFont - 1], &bitmap, &Cmetrics);
if (bitmap == NULL && u != 32)
return 0;
else
return Cmetrics.widthDevice;
}
bool is_word_break(ucs4_t u)
{
unsigned char c = u & 0x000000FF;
return ((0x1100 <= u && u <= 0x11FF) || // Hangul
(0x2200 <= u && u <= 0x2BFF) || // symbols
(0x2E00 <= u) || // symbols or CJK
(u < 0x100 && strchr(" ~!@#$%^&*()-_+=[]\{}|;;':\",./", c)));
}
int extract_str_fitting_width(const unsigned char **pIn, unsigned char *pOut, int max_width, int font_idx)
{
bmf_bm_t *bitmap = NULL;
charmetric_bmf Cmetrics;
int width = 0;
int widthFitted = 0;
ucs4_t u;
const unsigned char *pOrigIn;
int nBytesFittingWidth = 0;
int nLastBytes, nLastWidth;
pOrigIn = *pIn;
pOut[0] = '\0';
while (**pIn > MAX_ESC_CHAR && width <= max_width)
{
nLastBytes = *pIn - pOrigIn;
nLastWidth = width;
if ((u = UTF8_to_UCS4(pIn)))