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add simple text viewer to pluginlib and use this for dict to show description.

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now dict can scroll the description. it might not show full description if it is too long or memory is not enough.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26687 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Teruaki Kawashima 2010-06-08 11:07:36 +00:00
parent 755fef66b3
commit 0c7eb41da8
4 changed files with 308 additions and 195 deletions
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214
apps/plugins/dict.c
View file

@ -20,11 +20,11 @@
****************************************************************************/
#include "plugin.h"
#include "lib/simple_viewer.h"
PLUGIN_HEADER
/* screen info */
static int display_columns, display_lines;
#define MIN_DESC_BUF_SIZE 0x400 /* arbitrary minimum size for description */
/* Some lenghts */
#define WORDLEN 32 /* has to be the same in rdf2binary.c */
@ -44,50 +44,6 @@ struct stWord
long offset;
} STRUCT_PACKED;
/* A funtion to get width and height etc (from viewer.c) */
void init_screen(void)
{
#ifdef HAVE_LCD_BITMAP
int w,h;
rb->lcd_getstringsize("o", &w, &h);
display_lines = LCD_HEIGHT / h;
display_columns = LCD_WIDTH / w;
#else
display_lines = 2;
display_columns = 11;
#endif
}
/* global vars for pl_malloc() */
void *bufptr;
size_t bufleft;
/* simple function to "allocate" memory in pluginbuffer. */
void *pl_malloc(size_t size)
{
void *ptr;
ptr = bufptr;
if (bufleft < size)
{
return NULL;
}
else
{
bufptr += size;
bufleft -= size;
return ptr;
}
}
/* init function for pl_malloc() */
void pl_malloc_init(void)
{
bufptr = rb->plugin_get_buffer(&bufleft);
}
/* for endian problems */
#ifdef ROCKBOX_BIG_ENDIAN
#define reverse(x) x
@ -102,59 +58,6 @@ long reverse (long N) {
}
#endif
/* Button definitions */
#if CONFIG_KEYPAD == PLAYER_PAD
#define LP_QUIT BUTTON_STOP
#elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
(CONFIG_KEYPAD == IPOD_3G_PAD) || \
(CONFIG_KEYPAD == IPOD_1G2G_PAD)
#define LP_QUIT BUTTON_MENU
#elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
#define LP_QUIT BUTTON_PLAY
#elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == GIGABEAT_PAD
#define LP_QUIT BUTTON_POWER
#elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
(CONFIG_KEYPAD == SANSA_C200_PAD) || \
(CONFIG_KEYPAD == SANSA_CLIP_PAD) || \
(CONFIG_KEYPAD == SANSA_M200_PAD)
#define LP_QUIT BUTTON_POWER
#elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
#define LP_QUIT (BUTTON_HOME|BUTTON_REPEAT)
#elif CONFIG_KEYPAD == IRIVER_H10_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == MROBE500_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == MROBE100_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == GIGABEAT_S_PAD
#define LP_QUIT BUTTON_BACK
#elif CONFIG_KEYPAD == IAUDIO_M3_PAD
#define LP_QUIT BUTTON_RC_REC
#elif CONFIG_KEYPAD == COWON_D2_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == IAUDIO67_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == CREATIVEZVM_PAD
#define LP_QUIT BUTTON_BACK
#elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == ONDAVX747_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == ONDAVX777_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
#define LP_QUIT BUTTON_LEFT
#elif CONFIG_KEYPAD == PBELL_VIBE500_PAD
#define LP_QUIT BUTTON_CANCEL
#elif CONFIG_KEYPAD == MPIO_HD200_PAD
#define LP_QUIT (BUTTON_REC|BUTTON_PLAY)
#else
#define LP_QUIT BUTTON_OFF
#endif
/* data files */
#define DICT_INDEX PLUGIN_APPS_DIR "/dict.index"
@ -165,42 +68,32 @@ enum plugin_status plugin_start(const void* parameter)
{
char searchword[WORDLEN]; /* word to search for */
char *description; /* pointer to description buffer */
char *output; /* pointer to output buffer */
char *ptr, *space;
struct stWord word; /* the struct to read into */
int fIndex, fData; /* files */
int filesize, high, low, probe;
int lines, len, outputted, next;
char *buffer;
size_t buffer_size;
/* plugin stuff */
(void)parameter;
/* get screen info */
init_screen();
/* get pl_malloc() buffer ready. */
pl_malloc_init();
/* init description buffer (size is because we don't have scrolling)*/
description = (char *)pl_malloc(display_columns * display_lines);
if (description == NULL)
/* allocate buffer. */
buffer = rb->plugin_get_buffer(&buffer_size);
if (buffer == NULL || buffer_size < MIN_DESC_BUF_SIZE)
{
DEBUGF("Err: failed to allocate description buffer.");
DEBUGF("Err: Failed to allocate buffer.\n");
rb->splash(HZ*2, "Failed to allocate buffer.");
return PLUGIN_ERROR;
}
/* init output buffer */
output = (char *)pl_malloc(display_columns);
if (output == NULL)
{
DEBUGF("Err: failed to allocate output buffer.");
return PLUGIN_ERROR;
}
description = buffer;
/* "clear" input buffer */
searchword[0] = '\0';
rb->kbd_input(searchword, sizeof(searchword)); /* get the word to search */
/* get the word to search */
if (rb->kbd_input(searchword, sizeof(searchword)) < 0)
return PLUGIN_OK; /* input cancelled */
fIndex = rb->open(DICT_INDEX, O_RDONLY); /* index file */
if (fIndex < 0)
@ -241,13 +134,13 @@ enum plugin_status plugin_start(const void* parameter)
/* read in the word */
rb->lseek(fIndex, sizeof(struct stWord) * low, SEEK_SET);
rb->read(fIndex, &word, sizeof(struct stWord));
rb->close(fIndex);
/* Check if we found something */
if (low == -1 || rb->strcasecmp(searchword, word.word) != 0)
{
DEBUGF("Not found.\n");
rb->splash(HZ*2, "Not found.");
rb->close(fIndex);
return PLUGIN_OK;
}
@ -259,7 +152,6 @@ enum plugin_status plugin_start(const void* parameter)
{
DEBUGF("Err: Failed to open description file.\n");
rb->splash(HZ*2, "Failed to open descriptions.");
rb->close(fIndex);
return PLUGIN_ERROR;
}
@ -267,83 +159,15 @@ enum plugin_status plugin_start(const void* parameter)
rb->lseek(fData, (off_t)reverse(word.offset), SEEK_SET);
/* Read in the description */
rb->read_line(fData, description, display_columns * display_lines);
rb->read_line(fData, description, buffer_size);
/* And print it to debug. */
DEBUGF("Description: %s\n", description);
/* get pointer to first char */
ptr = description;
lines = 0;
outputted = 0;
len = rb->strlen(description);
/* clear screen */
rb->lcd_clear_display();
/* for large screens display the searched word. */
if(display_lines > 4)
{
rb->lcd_puts(0, lines, searchword);
lines++;
}
/* TODO: Scroll, or just stop when there are to much lines. */
while (1)
{
/* copy one lcd line */
rb->strlcpy(output, ptr, display_columns + 1);
/* typecast to kill a warning... */
if((int)rb->strlen(ptr) < display_columns)
{
rb->lcd_puts(0, lines, output);
lines++;
break;
}
/* get the last spacechar */
space = rb->strrchr(output, ' ');
if (space != NULL)
{
*space = '\0';
next = (space - (char*)output) + 1;
}
else
{
next = display_columns;
}
/* put the line on screen */
rb->lcd_puts(0, lines, output);
/* get output count */
outputted += rb->strlen(output);
if (outputted < len)
{
/* set pointer to the next part */
ptr += next;
lines++;
}
else
{
break;
}
}
rb->lcd_update();
/* wait for keypress */
while(rb->button_get(true) != LP_QUIT)
{
/* do nothing */
/* maybe define some keys for navigation here someday. */
}
rb->close(fIndex);
rb->close(fData);
/* display description. */
view_text(searchword, description);
return PLUGIN_OK;
}

1
apps/plugins/lib/SOURCES
View file

@ -9,6 +9,7 @@ fixedpoint.c
playback_control.c
rgb_hsv.c
buflib.c
simple_viewer.c
display_text.c
strncpy.c

260
apps/plugins/lib/simple_viewer.c Normal file
View file

@ -0,0 +1,260 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2010 Teruaki Kawashima
*
* 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "plugin.h"
#include "pluginlib_actions.h"
#include "simple_viewer.h"
#include <ctype.h>
struct view_info {
#ifdef HAVE_LCD_BITMAP
struct font* pf;
#endif
const char *title;
const char *text; /* displayed text */
int display_lines; /* number of lines can be displayed */
int line_count; /* number of lines */
int line; /* current fisrt line */
int start; /* possition of first line in text */
};
static const char* get_next_line(const char *text, struct view_info *info)
{
(void) info;
const char *ptr = text;
const char *space = NULL;
int total, n, w;
total = 0;
while(*ptr)
{
#ifdef HAVE_LCD_CHARCELLS
n = rb->utf8seek(ptr, 1);
w = 1;
#else
unsigned short ch;
n = ((long)rb->utf8decode(ptr, &ch) - (long)ptr);
w = rb->font_get_width(info->pf, ch);
#endif
if (isspace(*ptr))
space = ptr+n;
if (*ptr == '\n')
{
ptr += n;
break;
}
if (total + w > LCD_WIDTH)
break;
ptr += n;
total += w;
}
return *ptr && space? space: ptr;
}
static void calc_line_count(struct view_info *info)
{
const char *ptr = info->text;
int i = 0;
while (*ptr)
{
ptr = get_next_line(ptr, info);
i++;
}
info->line_count = i;
}
static void calc_first_line(struct view_info *info, int line)
{
const char *ptr = info->text;
int i = 0;
if (line > info->line_count - info->display_lines)
line = info->line_count - info->display_lines;
if (line < 0)
line = 0;
DEBUGF("%d -> %d\n", info->line, line);
if (info->line <= line)
{
ptr += info->start;
i = info->line;
}
while (*ptr && i < line)
{
ptr = get_next_line(ptr, info);
i++;
}
info->start = ptr - info->text;
info->line = i;
DEBUGF("%d: %d\n", info->line, info->start);
}
static int init_view(struct view_info *info,
const char *title, const char *text)
{
#ifdef HAVE_LCD_BITMAP
info->pf = rb->font_get(FONT_UI);
info->display_lines = LCD_HEIGHT / info->pf->height;
#else
info->display_lines = LCD_HEIGHT;
#endif
info->title = title;
info->text = text;
info->line_count = 0;
info->line = 0;
info->start = 0;
/* no title for small screens. */
if (info->display_lines < 4)
{
info->title = NULL;
}
else
{
info->display_lines--;
}
calc_line_count(info);
return 0;
}
static void draw_text(struct view_info *info)
{
#ifdef HAVE_LCD_BITMAP
#define OUTPUT_SIZE LCD_WIDTH+1
#else
#define OUTPUT_SIZE LCD_WIDTH*3+1
#endif
static char output[OUTPUT_SIZE];
const char *text, *ptr;
int i, max_show, lines = 0;
/* clear screen */
rb->lcd_clear_display();
/* display title. */
if(info->title)
{
rb->lcd_puts(0, lines, info->title);
lines++;
}
max_show = MIN(info->line_count - info->line, info->display_lines);
DEBUGF("draw_text: %d-%d/%d\n",
info->line, info->line + max_show, info->line_count);
text = info->text + info->start;
for (i = 0; i < max_show; i++, lines++)
{
ptr = get_next_line(text, info);
DEBUGF("%d>%d-%d, ", i, text-info->text, ptr-text);
rb->strlcpy(output, text, ptr-text+1);
rb->lcd_puts(0, lines, output);
text = ptr;
}
DEBUGF("\n");
rb->lcd_update();
}
static void scroll_up(struct view_info *info)
{
if (info->line <= 0)
return;
calc_first_line(info, info->line-1);
draw_text(info);
return;
}
static void scroll_down(struct view_info *info)
{
if (info->line + info->display_lines >= info->line_count)
return;
calc_first_line(info, info->line+1);
draw_text(info);
}
static void scroll_to_top(struct view_info *info)
{
if (info->line <= 0)
return;
calc_first_line(info, 0);
draw_text(info);
}
static void scroll_to_bottom(struct view_info *info)
{
if (info->line + info->display_lines >= info->line_count)
return;
calc_first_line(info, info->line_count - info->display_lines);
draw_text(info);
}
int view_text(const char *title, const char *text)
{
struct view_info info;
const struct button_mapping *view_contexts[] = {
pla_main_ctx,
};
int button;
init_view(&info, title, text);
draw_text(&info);
/* wait for keypress */
while(1)
{
button = pluginlib_getaction(TIMEOUT_BLOCK, view_contexts,
ARRAYLEN(view_contexts));
switch (button)
{
case PLA_UP:
case PLA_UP_REPEAT:
scroll_up(&info);
break;
case PLA_DOWN:
case PLA_DOWN_REPEAT:
scroll_down(&info);
break;
case PLA_LEFT_REPEAT:
scroll_to_top(&info);
break;
case PLA_RIGHT_REPEAT:
scroll_to_bottom(&info);
break;
case PLA_EXIT:
case PLA_CANCEL:
return PLUGIN_OK;
default:
if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
break;
}
}
return PLUGIN_OK;
}

28
apps/plugins/lib/simple_viewer.h Normal file
View file

@ -0,0 +1,28 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2010 Teruaki Kawashima
*
* 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __PLUGINLIB_VIEWER_H__
#define __PLUGINLIB_VIEWER_H__
#include "plugin.h"
int view_text(const char *title, const char *text);
#endif /* __PLUGINLIB_VIEWER_H__ */