void scr_refresh(struct scroller *scr, int focus, enum win_refresh dorefresh)
{
int length; /* Length of current line */
int nlines; /* Number of lines written so far */
int r; /* Current row in scroller */
int c; /* Current column in row */
int width, height; /* Width and height of window */
int highlight_attr;
int hlsearch = cgdbrc_get_int(CGDBRC_HLSEARCH);
int rows_to_display = 0;
/* Steal line highlight attribute for our scroll mode status */
highlight_attr = hl_groups_get_attr(hl_groups_instance,
HLG_SCROLL_MODE_STATUS);
/* Sanity check */
height = swin_getmaxy(scr->win);
width = swin_getmaxx(scr->win);
if (scr->current.c > 0) {
if (scr->current.c % width != 0)
scr->current.c = (scr->current.c / width) * width;
}
r = scr->current.r;
c = scr->current.c;
rows_to_display = number_rows_to_display(scr, height, width);
/**
* Printing the scroller to the gdb window.
*
* The gdb window has a certain dimension (height and width).
* The scroller has a certain number of rows to print.
*
* When starting cgdb, or when the user clears the screen with Ctrl-L,
* the entire scroller buffer is not displayed in the gdb window.
*
* The gdb readline input will be displayed just below the last
* line of output in the scroller.
*
* In order to display the scroller buffer, first determine how many
* lines should be displayed. Then start drawing from the bottom of
* the viewable space and work our way up.
*/
for (nlines = 1; nlines <= height; nlines++) {
/* Empty lines below the scroller prompt should be empty.
* When in scroller mode, there should be no empty lines on the
* bottom. */
if (!scr->in_scroll_mode && nlines <= height - rows_to_display) {
swin_wmove(scr->win, height - nlines, 0);
swin_wclrtoeol(scr->win);
}
/* Print the current line [segment] */
else if (r >= 0) {
struct scroller_line *sline = &scr->lines[r];
hl_printline(scr->win, sline->line, sline->line_len, sline->attrs, 0, height - nlines, c, width);
/* If we're searching right now or we finished search
* and have focus... */
if (hlsearch && scr->last_hlregex && focus) {
struct hl_line_attr *attrs = hl_regex_highlight(
&scr->last_hlregex, sline->line, HLG_SEARCH);
if (sbcount(attrs)) {
hl_printline_highlight(scr->win, sline->line,
sline->line_len, attrs, 0, height - nlines, c, width);
sbfree(attrs);
}
}
if (scr->hlregex && scr->current.r == r) {
struct hl_line_attr *attrs = hl_regex_highlight(
&scr->hlregex, sline->line, HLG_INCSEARCH);
if (sbcount(attrs)) {
hl_printline_highlight(scr->win, sline->line,
sline->line_len, attrs, 0, height - nlines, c, width);
sbfree(attrs);
}
}
/* Update our position */
if (c >= width)
c -= width;
else {
r--;
if (r >= 0) {
length = scr->lines[r].line_len;
if (length > width)
c = ((length - 1) / width) * width;
}
}
/* Empty lines above the first line in the scroller should be empty.
* Since the scroller starts at the top, this should only occur when
* in the scroll mode. */
} else {
swin_wmove(scr->win, height - nlines, 0);
swin_wclrtoeol(scr->win);
}
/* If we're in scroll mode and this is the top line, spew status on right */
if (scr->in_scroll_mode && (nlines == height)) {
char status[ 64 ];
size_t status_len;
snprintf(status, sizeof(status), "[%d/%d]", scr->current.r + 1, sbcount(scr->lines));
status_len = strlen(status);
if ( status_len < width ) {
swin_wattron(scr->win, highlight_attr);
swin_mvwprintw(scr->win, height - nlines, width - status_len, "%s", status);
swin_wattroff(scr->win, highlight_attr);
}
}
}
length = scr->lines[scr->current.r].line_len - scr->current.c;
/* Only show the cursor when
* - the scroller is in focus
* - on the last line
* - when it is within the width of the screen
* - when not in scroller mode
*/
if (focus && scr->current.r == sbcount(scr->lines) - 1 &&
length <= width && !scr->in_scroll_mode) {
swin_curs_set(1);
swin_wmove(scr->win, rows_to_display-1, scr->current.pos % width);
} else {
/* Hide the cursor */
swin_curs_set(0);
}
switch(dorefresh) {
case WIN_NO_REFRESH:
swin_wnoutrefresh(scr->win);
break;
case WIN_REFRESH:
swin_wrefresh(scr->win);
break;
}
}
/**
* Display the source.
*
* A line in the source viewer looks like,
* # │ marker text
* where,
* # is the line number to display or ~ if no line number
* │ is the divider between the line number or it is a mark
* marker is shortarrow, longarrow, highlight, block, etc
* text is the source code to display
*
* The syntax highlighting works as follows,
*
* The #
* - If breakpoint is set, use Breakpoint
* - If breakpoint is disabled, use DisabledBreakpoint
* - If selected line, use SelectedLineNr
* - If executing line, use ExecutingLineNr
* - Otherwise, no highlighting group
*
* The │
* - When source window is in focus, the character is bolded, otherwise normal
* - If the user has a mark set, the mark will be displayed instead of any
* other character.
* - Edge case: When the marker is long or short arrow, CGDB prints ├
* instead of │ the ├ is colored based on highlighting group for
* the selected or executing arrow.
*
* The marker
* - The marker is the shortarrow, longarrow, highlight or block
* - The color is based off the corresponding highlighting group
*
* The text
* - The syntax highlighting source code to display
* - Will be colored with SelectedLineHighlight or ExecutingLineHighlight
* if the line is the selected or executing line and the display is set
* to highlight.
*/
int source_display(struct sviewer *sview, int focus, enum win_refresh dorefresh)
{
int i;
int lwidth;
int line;
int count;
enum LineDisplayStyle exe_display_style, sel_display_style;
int sellineno, exelineno;
int enabled_bp, disabled_bp;
int exe_line_display_is_arrow, sel_line_display_is_arrow;
int exe_arrow_attr, sel_arrow_attr;
int exe_block_attr, sel_block_attr;
char fmt[16];
int width, height;
int focus_attr = focus ? SWIN_A_BOLD : 0;
int showmarks = cgdbrc_get_int(CGDBRC_SHOWMARKS);
int hlsearch = cgdbrc_get_int(CGDBRC_HLSEARCH);
int mark_attr;
struct hl_line_attr *sel_highlight_attrs = 0;
struct hl_line_attr *exe_highlight_attrs = 0;
/* Check that a file is loaded */
if (!sview->cur || !sview->cur->file_buf.lines) {
logo_display(sview->win);
if (dorefresh == WIN_REFRESH)
swin_wrefresh(sview->win);
else
swin_wnoutrefresh(sview->win);
return 0;
}
sellineno = hl_groups_get_attr(
hl_groups_instance, HLG_SELECTED_LINE_NUMBER);
exelineno = hl_groups_get_attr(
hl_groups_instance, HLG_EXECUTING_LINE_NUMBER);
enabled_bp = hl_groups_get_attr(
hl_groups_instance, HLG_ENABLED_BREAKPOINT);
disabled_bp = hl_groups_get_attr(
hl_groups_instance, HLG_DISABLED_BREAKPOINT);
exe_display_style = cgdbrc_get_displaystyle(CGDBRC_EXECUTING_LINE_DISPLAY);
exe_arrow_attr = hl_groups_get_attr(
hl_groups_instance, HLG_EXECUTING_LINE_ARROW);
exe_block_attr = hl_groups_get_attr(
hl_groups_instance, HLG_EXECUTING_LINE_BLOCK);
sel_display_style = cgdbrc_get_displaystyle(CGDBRC_SELECTED_LINE_DISPLAY);
sel_arrow_attr = hl_groups_get_attr(
hl_groups_instance, HLG_SELECTED_LINE_ARROW);
sel_block_attr = hl_groups_get_attr(
hl_groups_instance, HLG_SELECTED_LINE_BLOCK);
exe_line_display_is_arrow =
exe_display_style == LINE_DISPLAY_SHORT_ARROW ||
exe_display_style == LINE_DISPLAY_LONG_ARROW;
sel_line_display_is_arrow =
sel_display_style == LINE_DISPLAY_SHORT_ARROW ||
sel_display_style == LINE_DISPLAY_LONG_ARROW;
mark_attr = hl_groups_get_attr(hl_groups_instance, HLG_MARK);
sbpush(sel_highlight_attrs, hl_line_attr(0, HLG_SELECTED_LINE_HIGHLIGHT));
sbpush(exe_highlight_attrs, hl_line_attr(0, HLG_EXECUTING_LINE_HIGHLIGHT));
/* Make sure cursor is visible */
swin_curs_set(!!focus);
/* Initialize variables */
height = swin_getmaxy(sview->win);
width = swin_getmaxx(sview->win);
/* Set starting line number (center source file if it's small enough) */
count = sbcount(sview->cur->file_buf.lines);
if (count < height) {
line = (count - height) / 2;
} else {
line = sview->cur->sel_line - height / 2;
if (line > count - height)
line = count - height;
else if (line < 0)
line = 0;
}
/* Print 'height' lines of the file, starting at 'line' */
lwidth = log10_uint(count) + 1;
snprintf(fmt, sizeof(fmt), "%%%dd", lwidth);
for (i = 0; i < height; i++, line++) {
int column_offset = 0;
/* Is this the current selected line? */
int is_sel_line = (line >= 0 && sview->cur->sel_line == line);
/* Is this the current executing line */
int is_exe_line = (line >= 0 && sview->cur->exe_line == line);
struct source_line *sline = (line < 0 || line >= count)?
NULL:&sview->cur->file_buf.lines[line];
struct hl_line_attr *printline_attrs = (sline)?sline->attrs:0;
swin_wmove(sview->win, i, 0);
/* Print the line number */
if (line < 0 || line >= count) {
for (int j = 1; j < lwidth; j++)
swin_waddch(sview->win, ' ');
swin_waddch(sview->win, '~');
} else {
int line_attr = 0;
int bp_val = sview->cur->lflags[line].breakpt;
if (bp_val == 1) {
line_attr = enabled_bp;
} else if (bp_val == 2) {
line_attr = disabled_bp;
} else if (bp_val == 0 && is_exe_line) {
line_attr = exelineno;
} else if (bp_val == 0 && is_sel_line) {
line_attr = sellineno;
}
swin_wattron(sview->win, line_attr);
swin_wprintw(sview->win, fmt, line + 1);
swin_wattroff(sview->win, line_attr);
}
if (!swin_has_colors()) {
/* TODO:
swin_wprintw(sview->win, "%.*s\n",
sview->cur->file_buf.lines[line].line,
sview->cur->file_buf.lines[line].len);
*/
continue;
}
/* Print the vertical bar or mark */
{
SWIN_CHTYPE vert_bar_char;
int vert_bar_attr;
int mc;
if (showmarks &&
((mc = source_get_mark_char(sview, sview->cur, line)) > 0)) {
vert_bar_char = mc;
vert_bar_attr = mark_attr;
} else if (is_exe_line && exe_line_display_is_arrow) {
vert_bar_attr = exe_arrow_attr;
vert_bar_char = SWIN_SYM_LTEE;
} else if (is_sel_line && sel_line_display_is_arrow) {
vert_bar_attr = sel_arrow_attr;
vert_bar_char = SWIN_SYM_LTEE;
} else {
vert_bar_attr = focus_attr;
vert_bar_char = SWIN_SYM_VLINE;
}
swin_wattron(sview->win, vert_bar_attr);
swin_waddch(sview->win, vert_bar_char);
swin_wattroff(sview->win, vert_bar_attr);
}
/* Print the marker */
if (is_exe_line || is_sel_line) {
enum LineDisplayStyle display_style;
int arrow_attr, block_attr;
struct hl_line_attr *highlight_attr;
if (is_exe_line) {
display_style = exe_display_style;
arrow_attr = exe_arrow_attr;
block_attr = exe_block_attr;
highlight_attr = exe_highlight_attrs;
} else {
display_style = sel_display_style;
arrow_attr = sel_arrow_attr;
block_attr = sel_block_attr;
highlight_attr = sel_highlight_attrs;
}
switch (display_style) {
case LINE_DISPLAY_SHORT_ARROW:
swin_wattron(sview->win, arrow_attr);
swin_waddch(sview->win, '>');
swin_wattroff(sview->win, arrow_attr);
break;
case LINE_DISPLAY_LONG_ARROW:
swin_wattron(sview->win, arrow_attr);
column_offset = get_line_leading_ws_count(
sline->line, sline->len);
column_offset -= (sview->cur->sel_col + 1);
if (column_offset < 0)
column_offset = 0;
/* Now actually draw the arrow */
for (int j = 0; j < column_offset; j++)
swin_waddch(sview->win, SWIN_SYM_HLINE);
swin_waddch(sview->win, '>');
swin_wattroff(sview->win, arrow_attr);
break;
case LINE_DISPLAY_HIGHLIGHT:
swin_waddch(sview->win, ' ');
printline_attrs = highlight_attr;
break;
case LINE_DISPLAY_BLOCK:
column_offset = get_line_leading_ws_count(
sline->line, sline->len);
column_offset -= (sview->cur->sel_col + 1);
if (column_offset < 0)
column_offset = 0;
/* Now actually draw the space to the block */
for (int j = 0; j < column_offset; j++)
swin_waddch(sview->win, ' ');
/* Draw the block */
swin_wattron(sview->win, block_attr);
swin_waddch(sview->win, ' ');
swin_wattroff(sview->win, block_attr);
break;
}
} else {
swin_waddch(sview->win, ' ');
}
/* Print the text */
if (line < 0 || line >= count) {
for (int j = 2 + lwidth; j < width; j++)
swin_waddch(sview->win, ' ');
} else {
int x, y;
y = swin_getcury(sview->win);
x = swin_getcurx(sview->win);
hl_printline(sview->win, sline->line, sline->len,
printline_attrs, -1, -1, sview->cur->sel_col + column_offset,
width - lwidth - 2);
if (hlsearch && sview->last_hlregex) {
struct hl_line_attr *attrs = hl_regex_highlight(
&sview->last_hlregex, sline->line, HLG_SEARCH);
if (sbcount(attrs)) {
hl_printline_highlight(sview->win, sline->line, sline->len,
attrs, x, y, sview->cur->sel_col + column_offset,
width - lwidth - 2);
sbfree(attrs);
}
}
if (is_sel_line && sview->hlregex) {
struct hl_line_attr *attrs = hl_regex_highlight(
&sview->hlregex, sline->line, HLG_INCSEARCH);
if (sbcount(attrs)) {
hl_printline_highlight(sview->win, sline->line, sline->len,
attrs, x, y, sview->cur->sel_col + column_offset,
width - lwidth - 2);
sbfree(attrs);
}
}
}
}
switch(dorefresh) {
case WIN_NO_REFRESH:
swin_wnoutrefresh(sview->win);
break;
case WIN_REFRESH:
swin_wrefresh(sview->win);
break;
}
sbfree(sel_highlight_attrs);
sbfree(exe_highlight_attrs);
return 0;
}
int filedlg_display(struct filedlg *fd)
{
char fmt[16];
int width, height;
int lwidth;
int file;
int i;
int statusbar;
int arrow_attr;
int count = sbcount(fd->buf->files);
int hlsearch = cgdbrc_get_int(CGDBRC_HLSEARCH);
static const char label[] = "Select a file or press q to cancel.";
int inc_search_attr = hl_groups_get_attr(hl_groups_instance, HLG_INCSEARCH);
int search_attr = hl_groups_get_attr(hl_groups_instance, HLG_SEARCH);
swin_curs_set(0);
statusbar = hl_groups_get_attr(hl_groups_instance, HLG_STATUS_BAR);
arrow_attr = hl_groups_get_attr(hl_groups_instance, HLG_SELECTED_LINE_ARROW);
/* Check that a file is loaded */
if (fd == NULL || fd->buf == NULL || fd->buf->files == NULL) {
swin_wrefresh(fd->win);
return 0;
}
/* Initialize variables */
height = swin_getmaxy(fd->win);
width = swin_getmaxx(fd->win);
/* The status bar and display line
* Fake the display function to think the height is 2 lines less */
height -= 2;
/* Set starting line number (center source file if it's small enough) */
if (count < height)
file = (count - height) / 2;
else {
file = fd->buf->sel_line - height / 2;
if (file > count - height)
file = count - height;
else if (file < 0)
file = 0;
}
/* Print 'height' lines of the file, starting at 'file' */
lwidth = log10_uint(count) + 1;
snprintf(fmt, sizeof(fmt), "%%%dd", lwidth);
print_in_middle(fd->win, 0, width, label);
swin_wmove(fd->win, 0, 0);
for (i = 1; i < height + 1; i++, file++) {
swin_wmove(fd->win, i, 0);
/* Outside of filename, just finish drawing the vertical file */
if (file < 0 || file >= count) {
int j;
for (j = 1; j < lwidth; j++)
swin_waddch(fd->win, ' ');
swin_waddch(fd->win, '~');
swin_wattron(fd->win, SWIN_A_BOLD);
swin_waddch(fd->win, SWIN_SYM_VLINE);
swin_wattroff(fd->win, SWIN_A_BOLD);
for (j = 2 + lwidth; j < width; j++)
swin_waddch(fd->win, ' ');
continue;
}
int x, y;
char *filename = fd->buf->files[file];
/* Mark the current file with an arrow */
if (file == fd->buf->sel_line) {
swin_wattron(fd->win, SWIN_A_BOLD);
swin_wprintw(fd->win, fmt, file + 1);
swin_wattroff(fd->win, SWIN_A_BOLD);
swin_wattron(fd->win, arrow_attr);
swin_waddch(fd->win, '-');
swin_waddch(fd->win, '>');
swin_wattroff(fd->win, arrow_attr);
}
else {
/* Ordinary file */
swin_wprintw(fd->win, fmt, file + 1);
swin_wattron(fd->win, SWIN_A_BOLD);
swin_waddch(fd->win, SWIN_SYM_VLINE);
swin_wattroff(fd->win, SWIN_A_BOLD);
swin_waddch(fd->win, ' ');
}
y = swin_getcury(fd->win);
x = swin_getcurx(fd->win);
hl_printline(fd->win, filename, strlen(filename),
NULL, -1, -1, fd->buf->sel_col, width - lwidth - 2);
if (hlsearch && fd->last_hlregex) {
struct hl_line_attr *attrs = hl_regex_highlight(
&fd->last_hlregex, filename, search_attr);
if (sbcount(attrs)) {
hl_printline_highlight(fd->win, filename, strlen(filename),
attrs, x, y, fd->buf->sel_col, width - lwidth - 2);
sbfree(attrs);
}
}
if (regex_search && file == fd->buf->sel_line) {
struct hl_line_attr *attrs = hl_regex_highlight(
&fd->hlregex, filename, inc_search_attr);
if (sbcount(attrs)) {
hl_printline_highlight(fd->win, filename, strlen(filename),
attrs, x, y, fd->buf->sel_col, width - lwidth - 2);
sbfree(attrs);
}
}
}
/* Add the 2 lines back in so the status bar can be drawn */
height += 2;
/* Update status bar */
swin_wmove(fd->win, height, 0);
/* Print white background */
swin_wattron(fd->win, statusbar);
for (i = 0; i < width; i++)
swin_mvwprintw(fd->win, height - 1, i, " ");
if (regex_search && regex_direction)
swin_mvwprintw(fd->win, height - 1, 0, "Search:%s", regex_line);
else if (regex_search)
swin_mvwprintw(fd->win, height - 1, 0, "RSearch:%s", regex_line);
swin_wattroff(fd->win, statusbar);
swin_wmove(fd->win, height - (file - fd->buf->sel_line) - 1, lwidth + 2);
swin_wrefresh(fd->win);
return 0;
}