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viewer.rock can now remembers the last 46 viewed files and their positions, bookmarks are in a seperate .dat now, so old bookmarks will be lost

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10992 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jonathan Gordon 2006-09-18 15:31:51 +00:00
parent fa9dee01bc
commit 09a990c4cf
1 changed files with 75 additions and 70 deletions
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145
apps/plugins/viewer.c
View file

@ -24,6 +24,7 @@
PLUGIN_HEADER
#define SETTINGS_FILE "/.rockbox/viewers/viewer.dat" /* binary file, so dont use .cfg */
#define BOOKMARKS_FILE "/.rockbox/viewers/viewer_bookmarks.dat"
#define WRAP_TRIM 44 /* Max number of spaces to trim (arbitrary) */
#define MAX_COLUMNS 64 /* Max displayable string len (over-estimate) */
@ -37,7 +38,7 @@ PLUGIN_HEADER
#define BOTTOM_SECTOR (buffer + 2*(SMALL_BLOCK_SIZE))
#define SCROLLBAR_WIDTH 6
#define MAX_BOOKMARKED_FILES 10/*((signed)BUFFER_SIZE/(signed)sizeof(struct bookmarked_file_info))*/
#define MAX_BOOKMARKED_FILES (((signed)BUFFER_SIZE/(signed)sizeof(struct bookmarked_file_info))-1)
/* Out-Of-Bounds test for any pointer to data in the buffer */
#define BUFFER_OOB(p) ((p) < buffer || (p) >= buffer_end)
@ -168,11 +169,18 @@ PLUGIN_HEADER
#endif
/* stuff for the bookmarking */
struct bookmarked_file_info {
long file_position;
int top_ptr_pos;
char filename[MAX_PATH];
};
struct bookmark_file_data {
signed int bookmarked_files_count;
struct bookmarked_file_info bookmarks[];
};
struct preferences {
enum {
WRAP=0,
@ -227,9 +235,7 @@ struct preferences {
} scroll_mode;
int autoscroll_speed;
/* stuff for the bookmarking */
signed int bookmarked_files_count;
struct bookmarked_file_info bookmarks[MAX_BOOKMARKED_FILES];
} prefs;
static unsigned char buffer[BUFFER_SIZE + 1];
@ -1004,26 +1010,11 @@ static void viewer_reset_settings(void)
prefs.scrollbar_mode = SB_OFF;
#endif
prefs.autoscroll_speed = 1;
prefs.bookmarked_files_count = 0;
}
static int get_bookmarked_position(char* filename)
{
int i;
if (prefs.bookmarked_files_count > MAX_BOOKMARKED_FILES)
prefs.bookmarked_files_count = MAX_BOOKMARKED_FILES;
for (i=0; i < prefs.bookmarked_files_count; i++)
{
if (!rb->strcmp(filename, prefs.bookmarks[i].filename))
return i;
}
return -1;
}
static void viewer_load_settings(void) /* same name as global, but not the same file.. */
{
int settings_fd;
int bookmarked_pos;
settings_fd=rb->open(SETTINGS_FILE, O_RDONLY);
if (settings_fd < 0)
@ -1039,21 +1030,61 @@ static void viewer_load_settings(void) /* same name as global, but not the same
rb->read(settings_fd, &prefs, sizeof(struct preferences));
rb->close(settings_fd);
settings_fd = rb->open(BOOKMARKS_FILE, O_RDONLY);
if (settings_fd >= 0)
{
struct bookmark_file_data *data = (struct bookmark_file_data*)buffer; /* grab the text buffer */
struct bookmark_file_data dummy;
int i;
data->bookmarked_files_count = 0;
rb->read(settings_fd, &data->bookmarked_files_count, sizeof(signed int)); /* figure out how many items to read */
if (data->bookmarked_files_count > MAX_BOOKMARKED_FILES)
data->bookmarked_files_count = MAX_BOOKMARKED_FILES; /* dump the older files */
rb->read(settings_fd, data->bookmarks,
sizeof(struct bookmarked_file_info) * data->bookmarked_files_count);
rb->close(settings_fd);
for (i=0; i < data->bookmarked_files_count; i++)
{
if (!rb->strcmp(file_name, data->bookmarks[i].filename))
break;
}
if (i < data->bookmarked_files_count)
{
/* it is in the list, write everything back in the correct order, and reload the file correctly */
settings_fd = rb->creat(BOOKMARKS_FILE, O_WRONLY);
if (settings_fd >=0 )
{
if (data->bookmarked_files_count > MAX_BOOKMARKED_FILES)
data->bookmarked_files_count = MAX_BOOKMARKED_FILES; /* dump the older files */
rb->write (settings_fd, &data->bookmarked_files_count, sizeof(signed int));
/* write this item, then all up to it, then all after it */
rb->write (settings_fd, &data->bookmarks[i], sizeof(struct bookmarked_file_info));
rb->write (settings_fd, data->bookmarks, sizeof(struct bookmarked_file_info)*i);
rb->write (settings_fd, &data->bookmarks[i+1],
sizeof(struct bookmarked_file_info)*(data->bookmarked_files_count-i-1));
rb->close(settings_fd);
}
file_pos = data->bookmarks[i].file_position;
screen_top_ptr = buffer + data->bookmarks[i].top_ptr_pos;
}
else /* not in list, write the list to the file */
{
settings_fd = rb->creat(BOOKMARKS_FILE, O_WRONLY);
if (settings_fd >=0 )
{
if (++(data->bookmarked_files_count) > MAX_BOOKMARKED_FILES)
data->bookmarked_files_count = MAX_BOOKMARKED_FILES; /* dump the older files */
rb->write (settings_fd, &data->bookmarked_files_count, sizeof(signed int));
rb->PREFIX(lseek)(settings_fd,sizeof(struct bookmarked_file_info),SEEK_CUR);
// rb->memset(&dummy,0,sizeof(struct bookmarked_file_info)); /* the actual info will be written on exit */
//rb->write (settings_fd, &dummy, sizeof(struct bookmarked_file_info));
rb->write (settings_fd, data->bookmarks, sizeof(struct bookmarked_file_info)*(data->bookmarked_files_count-1));
rb->close(settings_fd);
}
}
} /* BOOKMARKS_FILE opened ok */
init_need_scrollbar();
bookmarked_pos = get_bookmarked_position(file_name);
if (bookmarked_pos < 0)
{
file_pos = 0;
screen_top_ptr = buffer;
}
else
{
file_pos = prefs.bookmarks[bookmarked_pos].file_position;
screen_top_ptr = buffer + prefs.bookmarks[bookmarked_pos].top_ptr_pos;
}
buffer_end = BUFFER_END(); /* Update whenever file_pos changes */
if (BUFFER_OOB(screen_top_ptr)) {
@ -1062,52 +1093,26 @@ static void viewer_load_settings(void) /* same name as global, but not the same
fill_buffer(file_pos, buffer, BUFFER_SIZE);
}
void viewer_rearrange_bookmarks(void)
{
int this_item = -1;
struct bookmarked_file_info *buf = (struct bookmarked_file_info*)buffer; /* grab the text buffer */
/* copy the bookmakred file list to the text buffer,
put this file at the top, then dump the filenames back and write to the fd */
rb->memcpy(buf,&prefs.bookmarks, sizeof(struct bookmarked_file_info)*MAX_BOOKMARKED_FILES);
this_item = get_bookmarked_position(file_name);
/* regardless of its position in the list, put it on top */
rb->strcpy(prefs.bookmarks[0].filename, file_name);
prefs.bookmarks[0].file_position = file_pos;
prefs.bookmarks[0].top_ptr_pos = screen_top_ptr - buffer;
if (this_item < 0)
{
/* not in the list yet, so put it first then dump the list back */
if (prefs.bookmarked_files_count == MAX_BOOKMARKED_FILES)
{
/* bookmark list is full! dump the lru file*/
rb->memcpy(&prefs.bookmarks[1],buf, sizeof(struct bookmarked_file_info)*(MAX_BOOKMARKED_FILES-1));
}
else
{
rb->memcpy(&prefs.bookmarks[1],buf, sizeof(struct bookmarked_file_info)*(prefs.bookmarked_files_count));
prefs.bookmarked_files_count++;
}
}
else
{
/* dump up to this item, skip 1 then dummp the rest */
rb->memcpy(&prefs.bookmarks[1],buf, sizeof(struct bookmarked_file_info)*(this_item));
rb->memcpy(&prefs.bookmarks[this_item+1],&buf[this_item+1],
sizeof(struct bookmarked_file_info)*(MAX_BOOKMARKED_FILES-this_item-1));
}
}
static void viewer_save_settings(void)/* same name as global, but not the same file.. */
{
int settings_fd;
settings_fd = rb->creat(SETTINGS_FILE, O_WRONLY); /* create the settings file */
viewer_rearrange_bookmarks();
rb->write (settings_fd, &prefs, sizeof(struct preferences));
rb->close(settings_fd);
settings_fd = rb->open(BOOKMARKS_FILE, O_WRONLY|O_CREAT);
if (settings_fd >= 0 )
{
struct bookmarked_file_info b = {0,0,""};
b.file_position = file_pos;
b.top_ptr_pos = screen_top_ptr - buffer;
rb->strcpy(b.filename,file_name);
rb->PREFIX(lseek)(settings_fd,sizeof(signed int),SEEK_SET);
rb->write (settings_fd, &b, sizeof(struct bookmarked_file_info));
rb->close(settings_fd);
}
}
static void viewer_exit(void *parameter)