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This commit is contained in:
Andrew Pamment 2021-12-21 16:53:29 +10:00
parent a189d44134
commit 23cfeba63c
4 changed files with 314 additions and 101 deletions
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49
page.c
View File

@ -12,6 +12,9 @@ void init_page(PAGE *p, char *filename, int size)
strcpy(p->filename, filename);
p->numlines = 0;
p->size = size;
p->x = 0;
p->y = 0;
p->saved = 1;
} // init_page
void dest_page(PAGE *p)
@ -77,21 +80,49 @@ void expand_page(PAGE *p)
} // expand_page
// NOTE: This moves the cursor to the end of the displayed text
void print_page(const PAGE *p, int start, int end)
void print_page(WINDOW *win, WINDOW *lnos, const PAGE *p, int start, int end)
{
int i, line;
for(i = start, line = 0; i < p->numlines && i < end; i++, line++)
for(i = start, line = 0; i < p->numlines && i < end; i++)
{
move(line, 0);
clrtoeol();
printw(" %s", p->text[i].line);
int linesinline = strlen(p->text[i].line) / 75;
if (strlen(p->text[i].line) % 75) linesinline++;
if (linesinline > 0) {
for (int j=0;j < linesinline; j++) {
wmove(lnos, line, 0);
wclrtoeol(lnos);
if (j == 0) {
wprintw(lnos, "%5d", i + 1);
}
wmove(win, line++, 0);
wclrtoeol(win);
wprintw(win, "%.*s", strlen(&p->text[i].line[j * 75]) < 75 ? strlen(&p->text[i].line[j * 75]) : 75, &p->text[i].line[j * 75]);
}
} else {
wmove(lnos, line, 0);
wclrtoeol(lnos);
wprintw(lnos, "%5d", i + 1);
wmove(win, line++, 0);
wclrtoeol(win);
}
}
for (int j=line; j < 23; j++) {
wmove(lnos, j, 0);
wclrtoeol(lnos);
}
if(start < end)
{
move(line, 0);
clrtoeol(); // if we deleted a line this may be necessary
move(line-1, 1);
wmove(win, line, 0);
wclrtoeol(win); // if we deleted a line this may be necessary
wmove(win, line-1, 1);
}
refresh();
wrefresh(lnos);
//refresh();
} // print_page

4
page.h
View File

@ -15,6 +15,8 @@ typedef struct
LINE *text; // lines of text
int numlines;
int size; // size of array
int x, y;
int saved;
} PAGE;
void init_page(PAGE *p, char *filename, int size);
@ -22,6 +24,6 @@ void dest_page(PAGE *p);
void insert_line(PAGE *p, int index);
void remove_line(PAGE *p, int index);
void expand_page(PAGE *p);
void print_page(const PAGE *p, int start, int end);
void print_page(WINDOW *win, WINDOW *lnos, const PAGE *p, int start, int end);
#endif

349
text.c
View File

@ -8,20 +8,108 @@
* -Loading
**/
int winx, winy;
int y_offset = 0; // TODO: move to local scope
int tab_offset = 0;
extern void convert_xpm(char **xpm, unsigned char **buffer);
extern unsigned char *QUINN_Icon;
// #define DEBUG
#define EDITOR_SIZE (WIN_SIZE - 2)
WINDOW *menu;
WINDOW *editor;
WINDOW *linenos;
short curs_color(int fg)
{
switch (7 & fg) { /* RGB */
case 0: /* 000 */
return (COLOR_BLACK);
case 1: /* 001 */
return (COLOR_BLUE);
case 2: /* 010 */
return (COLOR_GREEN);
case 3: /* 011 */
return (COLOR_CYAN);
case 4: /* 100 */
return (COLOR_RED);
case 5: /* 101 */
return (COLOR_MAGENTA);
case 6: /* 110 */
return (COLOR_YELLOW);
case 7: /* 111 */
return (COLOR_WHITE);
}
}
void init_colorpairs(void)
{
int fg, bg;
int colorpair;
for (bg = 0; bg <= 7; bg++) {
for (fg = 0; fg <= 7; fg++) {
colorpair = colornum(fg, bg);
init_pair(colorpair, curs_color(fg), curs_color(bg));
}
}
}
int colornum(int fg, int bg)
{
int B, bbb, ffff;
B = 1 << 7;
bbb = (7 & bg) << 4;
ffff = 7 & fg;
return (B | bbb | ffff);
}
void setcolor(int fg, int bg)
{
/* set the color pair (colornum) and bold/bright (A_BOLD) */
attron(COLOR_PAIR(colornum(fg, bg)));
if (is_bold(fg)) {
attron(A_BOLD);
}
}
void unsetcolor(int fg, int bg)
{
/* unset the color pair (colornum) and
bold/bright (A_BOLD) */
attroff(COLOR_PAIR(colornum(fg, bg)));
if (is_bold(fg)) {
attroff(A_BOLD);
}
}
int is_bold(int fg)
{
/* return the intensity bit */
int i;
i = 1 << 3;
return (i & fg);
}
void print_loc(int x, int y)
{
#ifdef DEBUG
int oldx, oldy;
getyx(stdscr, oldy, oldx);
mvprintw(0, COLS - 20, "x: %d y: %d o: %d", x, y, y_offset);
wmove(menu, 0, COLS - 20);
wprintw(menu, "X: %d Y: %d ", x, y + y_offset + 1);
wclrtoeol(menu);
move(oldy, oldx);
#endif
}
int main(int argc, char *argv[])
@ -53,91 +141,111 @@ int main(int argc, char *argv[])
noecho();
keypad(stdscr, 1);
start_color();
init_colorpairs();
winx = 0;
winy = 0;
menu = subwin(stdscr, 2, 80, 23, 0);
wbkgd(menu, COLOR_PAIR(colornum(COLOR_BLACK, COLOR_CYAN)));
editor = subwin(stdscr, 23, 75, 0, 5);
wbkgd(editor, COLOR_PAIR(colornum(COLOR_WHITE, COLOR_BLUE)));
linenos = subwin(stdscr, 23, 5, 0, 0);
wbkgd(linenos, COLOR_PAIR(colornum(COLOR_BLUE, COLOR_WHITE)));
int beg = 0;
int end = WIN_SIZE;
int y, x; // position on screen
int end = EDITOR_SIZE;
int i;
update_status(&page, "");
update_status(page.filename, "");
print_page(&page, beg, end);
getyx(stdscr, y, x);
print_page(editor, linenos, &page, beg, end);
wmove(editor, winy, winx);
while(1)
{
print_loc(x, y);
beg = 0 + y_offset;
end = WIN_SIZE + y_offset;
int ch = getch();
update_status(page.filename, ""); // default text
end = EDITOR_SIZE + y_offset;
int ch = wgetch(editor);
update_status(&page, ""); // default text
switch(ch)
{
case KEY_F(4):
if(prompt_yesno("Are you sure you want to quit?"))
goto endnc;
print_page(&page, beg, end);
print_page(editor, linenos, &page, beg, end);
break;
case KEY_F(5):
save_file(&page);
update_status(page.filename, "Saved!");
update_status(&page, "Saved!");
break;
case KEY_F(6):
prompt_string("Save As:", page.filename, NAME_LIMIT);
save_file(&page);
print_page(&page, beg, end);
update_status(page.filename, "Saved!");
print_page(editor, linenos, &page, beg, end);
update_status(&page, "Saved!");
break;
case KEY_UP:
move_up(&page, &x, &y);
move_up(&page);
break;
case KEY_DOWN:
move_down(&page, &x, &y);
move_down(&page);
break;
case KEY_LEFT:
move_left(&x, &y);
move_left(&page);
break;
case KEY_RIGHT:
move_right(&page, &x, &y);
move_right(&page);
break;
case KEY_END:
move_to_eol(&page);
case KEY_DC:
case 127: // backspace key...
case KEY_BACKSPACE:
case '\b':
if(strlen(page.text[y + y_offset].line) == 0)
if(strlen(page.text[page.y].line) == 0)
{ // can only delete blank lines for now
remove_line(&page, y + y_offset);
move_up(&page, &x, &y);
remove_line(&page, page.y);
move_up(&page);
}
else if( x > 1 )
else if( page.x > 0 )
{
remove_char(&page.text[y + y_offset], x - 2); // delete
move_left(&x, &y); // char behind cursor
remove_char(&page.text[page.y], page.x - 1); // delete
move_left(&page); // char behind cursor
}
print_page(&page, beg, end);
move(y, x);
print_page(editor, linenos, &page, beg, end);
wmove(editor, winy, winx);
page.saved = 0;
break;
case '\t':
for(i = 0; i < TAB_WIDTH; i++)
{
insert_char(&page.text[y + y_offset], ' ', x - 1);
print_page(&page, beg, end);
move_right(&page, &x, &y);
insert_char(&page.text[page.y], ' ', page.x);
print_page(editor, linenos, &page, beg, end);
move_right(&page);
}
page.saved = 0;
break;
case '\n': // newline
insert_line(&page, y + y_offset + 1);
print_page(&page, beg, end);
move_down(&page, &x, &y);
insert_line(&page, page.y + 1);
print_page(editor, linenos, &page, beg, end);
move_down(&page);
break;
default: // all other chars
if( isprint(ch) )
{
insert_char(&page.text[y + y_offset], ch, x - 1);
print_page(&page, beg, end);
move_right(&page, &x, &y);
insert_char(&page.text[page.y], ch, page.x);
print_page(editor, linenos, &page, beg, end);
move_right(&page);
page.saved = 0;
}
}
print_loc(page.x, page.y);
wrefresh(menu);
wrefresh(editor);
}
endnc:
/* end curses */
@ -147,76 +255,147 @@ endnc:
} // main
// prints a message at the bottom of the window
void update_status(char *filename, char *info)
void update_status(PAGE *p, char *info)
{
int oldy, oldx; getyx(stdscr, oldy, oldx);
char status[81];
char title[61];
snprintf(title, 60, "Text: %s", filename);
snprintf(title, 60, "Text: %s%c", p->filename, p->saved == 1 ? ' ' : '*');
PDC_set_title(title);
snprintf(status, 80, "F4: Quit F5: Save F6: Save As File: %-25.25s %s", filename, info);
attron(A_REVERSE);
move(LINES - 1, 0);
clrtoeol();
printw(status);
attroff(A_REVERSE);
move(oldy, oldx);
wmove(menu, 0, 0);
wprintw(menu, "%s", info);
wmove(menu, 1, 0);
wprintw(menu, "F4: Quit F5: Save F6: Save As ");
wrefresh(menu);
} // update_status
/* movement */
void move_left(int *x, int *y)
void move_to_eol(PAGE *p)
{
if(*x - 1 > 0) move(*y, --(*x));
while (p->x <= strlen(p->text[p->y].line)) {
move_right(p);
}
}
void move_right(PAGE *p, int *x, int *y)
void move_left(PAGE *p)
{
if(*x <= strlen(p->text[*y + y_offset].line))
{
if(p->text[*y + y_offset].line[*x + tab_offset] == '\t') {
move(*y, ++(*x));
if(p->x - 1 > 0) {
p->x--;
winx--;
winy = 0;
if (p->x > 75) {
winx = p->x % 75;
winy = p->x / 75;
} else {
move(*y, ++(*x));
winx = p->x;
}
for (int j = y_offset; j < p->y; j++) {
if (strlen(p->text[j].line) > 75) {
int linesinline = strlen(p->text[j].line) / 75;
if (strlen(p->text[j].line) % 75) linesinline++;
winy += linesinline;
} else {
winy++;
}
}
wmove(editor, winy, winx);
} else if (p->x - 1 == 0){
p->x = 0;
winx = 0;
}
}
void move_up(PAGE *p, int *x, int *y)
void move_right(PAGE *p)
{
if( *y > 0 )
if(p->x <= strlen(p->text[p->y].line))
{
--(*y);
p->x++;
winy = 0;
if (p->x > 75) {
winx = p->x % 75;
winy = p->x / 75;
} else {
winx++;
}
for (int j = y_offset; j < p->y; j++) {
if (strlen(p->text[j].line) > 75) {
int linesinline = strlen(p->text[j].line) / 75;
if (strlen(p->text[j].line) % 75) linesinline++;
winy += linesinline;
} else {
winy++;
}
}
wmove(editor, winy, winx);
}
}
void move_up(PAGE *p)
{
int linesinline = 1;
if (p->y > 0) {
if (strlen(p->text[p->y - 1].line) / 75 >= 1) {
linesinline = strlen(p->text[p->y - 1].line) / 75;
if (strlen(p->text[p->y - 1].line) % 75) linesinline++;
}
if( p->y - y_offset >= linesinline)
{
p->y--;
winy -= linesinline;
}
else if (y_offset > 0)
{
p->y--;
--(y_offset);
print_page(p, 0 + y_offset, WIN_SIZE + y_offset);
print_page(editor, linenos, p, 0 + y_offset, EDITOR_SIZE + y_offset);
} else {
p->y--;
winy -= linesinline;
}
if( *x > strlen(p->text[*y + y_offset].line) + 1 ) // cursor adjusts
*x = strlen(p->text[*y + y_offset].line) + 1; // to smaller lines
move(*y, *x);
}
void move_down(PAGE *p, int *x, int *y)
{
if( *y < WIN_SIZE - 1 && *y < p->numlines - 1 )
{
++(*y);
}
else if ( *y + y_offset < p->numlines - 1 )
{
++(y_offset);
print_page(p, 0 + y_offset, WIN_SIZE + y_offset);
if( p->x > strlen(p->text[p->y].line) ) { // cursor adjusts
p->x = strlen(p->text[p->y].line); // to smaller lines
winx = p->x;
}
if( *x > strlen(p->text[*y + y_offset].line) + 1 )
*x = strlen(p->text[*y + y_offset].line) + 1;
move(*y, *x);
wmove(editor, winy, winx);
}
}
void move_down(PAGE *p)
{
int linesinline = 1;
if (strlen(p->text[p->y].line) / 75 >= 1) {
linesinline = strlen(p->text[p->y].line) / 75;
if (strlen(p->text[p->y].line) % 75) linesinline++;
}
if( p->y - y_offset < EDITOR_SIZE - 1 && p->y -y_offset < p->numlines - 1 )
{
p->y++;
winy += linesinline;
}
else if ( p->y < p->numlines - 1 )
{
p->y++;
++(y_offset);
print_page(editor, linenos, p, 0 + y_offset, EDITOR_SIZE + y_offset);
}
if( p->x > strlen(p->text[p->y].line)) {
p->x = strlen(p->text[p->y].line);
winx = p->x;
}
wmove(editor, winy, winx);
}
/* movement */
@ -296,7 +475,7 @@ void save_file(PAGE *p)
}
fclose(fp);
p->saved = 1;
} // save_file
int file_exists(char *filename)

11
text.h
View File

@ -10,17 +10,18 @@
#include "page.h"
#include "prompt.h"
void update_status(char *filename, char *info);
void update_status(PAGE *p, char *info);
int count_lines(FILE *fp);
void load_file(PAGE *p, char* filename);
void save_file(PAGE *p);
int file_exists(char *filename);
void move_left(int *x, int *y);
void move_right(PAGE *p, int *x, int *y);
void move_up(PAGE *p, int *x, int *y);
void move_down(PAGE *p, int *x, int *y);
void move_to_eol(PAGE *p);
void move_left(PAGE *p);
void move_right(PAGE *p);
void move_up(PAGE *p);
void move_down(PAGE *p);
#endif