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* view.c (view_display_hex): Completely rewritten. Now the code

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distinguishes several phases (state selection, color selection,
	printing) and does not mix them wildly, as the previous code
	did.
This commit is contained in:
Roland Illig 2005-08-18 03:33:33 +00:00
parent ba8ba542f0
commit b7cba56d21
2 changed files with 80 additions and 90 deletions
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4
src/ChangeLog
View File

@ -10,6 +10,10 @@
of the hex editor out of this function. Whoever wrote that
should be blamed for it, but the code has been there since the
beginning.
* view.c (view_display_hex): Completely rewritten. Now the code
distinguishes several phases (state selection, color selection,
printing) and does not mix them wildly, as the previous code
did.
2005-08-16 Roland Illig <roland.illig@gmx.de>

166
src/view.c
View File

@ -1596,10 +1596,10 @@ view_display_clean (WView *view)
#define view_gotoyx(v,r,c) widget_move (v,r,c)
typedef enum {
MARK_NORMAL = 0,
MARK_SELECTED = 1,
MARK_CURSOR = 2,
MARK_CHANGED = 3
MARK_NORMAL,
MARK_SELECTED,
MARK_CURSOR,
MARK_CHANGED
} mark_t;
static inline int
@ -1677,7 +1677,6 @@ view_display_hex (WView *view)
curr = curr->next;
}
attrset (NORMAL_COLOR);
for (row = 0; get_byte (view, from) != -1 && row < height; row++) {
/* Print the hex offset */
attrset (MARKED_COLOR);
@ -1687,112 +1686,99 @@ view_display_hex (WView *view)
attrset (NORMAL_COLOR);
col = hex_start;
/* Each hex number is two digits */
hex_buff[2] = '\0';
for (bytes = 0;
bytes < view->bytes_per_line
&& (c = get_byte (view, from)) != -1;
bytes++, from++) {
/* Display and mark changed bytes */
if (curr && from == curr->offset) {
for (bytes = 0; bytes < view->bytes_per_line; bytes++, from++) {
if ((c = get_byte (view, from)) == -1)
break;
/* Save the cursor position for view_place_cursor() */
if (from == view->hex_cursor && !view->hexview_in_text) {
view->cursor_row = row;
view->cursor_col = col;
}
/* Determine the state of the current byte */
/* The current cursor position */
if (from == view->hex_cursor) {
boldflag = MARK_CURSOR;
/* Changed bytes from the hex editor */
} else if (curr && from == curr->offset) {
c = curr->value;
curr = curr->next;
boldflag = MARK_CHANGED;
attrset (VIEW_UNDERLINED_COLOR);
}
if (view->found_len && from >= view->search_start
&& from < view->search_start + view->found_len) {
/* Marked bytes from the search functions */
} else if (view->search_start <= from
&& from < view->search_start + view->found_len) {
boldflag = MARK_SELECTED;
attrset (MARKED_COLOR);
}
/* Display the navigation cursor */
if (from == view->hex_cursor) {
if (!view->hexview_in_text) {
view->cursor_row = row;
view->cursor_col = col;
}
boldflag = MARK_CURSOR;
attrset (view->hexview_in_text
? MARKED_SELECTED_COLOR
: VIEW_UNDERLINED_COLOR);
} else {
boldflag = MARK_NORMAL;
}
/* Print a hex number (sprintf is too slow) */
hex_buff[0] = hex_char[(c >> 4)];
hex_buff[1] = hex_char[c & 15];
/* Select the color for the hex number */
attrset (
boldflag == MARK_NORMAL ? NORMAL_COLOR :
boldflag == MARK_SELECTED ? MARKED_COLOR :
boldflag == MARK_CHANGED ? VIEW_UNDERLINED_COLOR :
/* boldflag == MARK_CURSOR */
view->hexview_in_text ? MARKED_SELECTED_COLOR :
VIEW_UNDERLINED_COLOR);
/* Print the hex number */
view_gotoyx (view, top + row, left + col);
view_add_string (view, hex_buff);
col += 3;
/* Turn off the cursor or changed byte highlighting here */
if (boldflag == MARK_CURSOR || boldflag == MARK_CHANGED)
attrset (NORMAL_COLOR);
if ((bytes & 3) == 3 && bytes + 1 < view->bytes_per_line) {
/* Turn off the search highlighting */
if (boldflag == MARK_SELECTED
&& from == view->search_start + view->found_len - 1)
attrset (NORMAL_COLOR);
view_add_character (view, hex_char[c / 16]);
view_add_character (view, hex_char[c % 16]);
col += 2;
/* Hex numbers are printed in the groups of four */
/* Groups are separated by a vline */
view_gotoyx (view, top + row, left + col - 1);
/* Print the separator */
attrset (NORMAL_COLOR);
if (bytes != view->bytes_per_line - 1) {
view_add_character (view, ' ');
view_gotoyx (view, top + row, left + col);
if (view->data_area.width < 80)
col += 1;
/* After every four bytes, print a group separator */
if (bytes % 4 == 3) {
if (view->data_area.width >= 80) {
view_add_one_vline ();
col += 1;
}
view_add_character (view, ' ');
col += 1;
else {
view_add_one_vline ();
col += 2;
}
}
if (boldflag != MARK_NORMAL
&& from == view->search_start + view->found_len - 1)
attrset (MARKED_COLOR);
}
if (boldflag != MARK_NORMAL
&& from < view->search_start + view->found_len - 1
&& bytes != view->bytes_per_line - 1) {
view_gotoyx (view, top + row, left + col);
view_add_character (view, ' ');
}
/* Select the color for the character; this differs from the
* hex color when boldflag == MARK_CURSOR */
attrset (
boldflag == MARK_NORMAL ? NORMAL_COLOR :
boldflag == MARK_SELECTED ? MARKED_COLOR :
boldflag == MARK_CHANGED ? VIEW_UNDERLINED_COLOR :
/* boldflag == MARK_CURSOR */
view->hexview_in_text ? VIEW_UNDERLINED_COLOR :
MARKED_SELECTED_COLOR);
c = convert_to_display_c (c);
if (!is_printable (c))
c = '.';
/* Print corresponding character on the text side */
view_gotoyx (view, top + row, left + text_start + bytes);
c = convert_to_display_c (c);
if (!is_printable (c))
c = '.';
switch (boldflag) {
case MARK_NORMAL:
break;
case MARK_SELECTED:
attrset (MARKED_COLOR);
break;
case MARK_CURSOR:
if (view->hexview_in_text) {
/* Our side is active */
view->cursor_col = text_start + bytes;
view->cursor_row = row;
attrset (VIEW_UNDERLINED_COLOR);
} else {
/* Other side is active */
attrset (MARKED_SELECTED_COLOR);
}
break;
case MARK_CHANGED:
attrset (VIEW_UNDERLINED_COLOR);
break;
}
view_add_character (view, c);
if (boldflag != MARK_NORMAL) {
boldflag = MARK_NORMAL;
attrset (NORMAL_COLOR);
/* Save the cursor position for view_place_cursor() */
if (from == view->hex_cursor && view->hexview_in_text) {
view->cursor_row = row;
view->cursor_col = text_start + bytes;
}
}
}
/* Be polite to the other functions */
attrset (NORMAL_COLOR);
view_place_cursor (view);
view->dpy_complete = (get_byte (view, from) == -1);
}