espterm
/
espterm-firmware
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

implemented scrolling region and origin mode

Browse Source
pull/111/merge
Ondřej Hruška 7 years ago
parent 2c7c496862
commit dd68c112b0
3 changed files with 106 additions and 36 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 2
      user/apars_csi.c
  2. 7
      user/cgi_sockets.c
  3. 125
      user/screen.c

2
user/apars_csi.c
Unescape View File

@ -276,7 +276,7 @@ apars_handle_csi(char leadchar, const int *params, int count, char keychar)
case 'r':
if (leadchar == NUL && (count == 2 || count == 0)) {
screen_set_scrolling_region(n1, n2);
screen_set_scrolling_region(n1-1, n2-1);
}
else if (leadchar == '?') {
// Restore private attributes (CSI ? Pm h/l)

7
user/cgi_sockets.c
Unescape View File

@ -6,6 +6,7 @@
#include "uart_driver.h"
#include "screen.h"
#include "uart_buffer.h"
#include "ansi_parser.h"
#define SOCK_BUF_LEN 1024
static char sock_buff[SOCK_BUF_LEN];
@ -128,6 +129,10 @@ void ICACHE_FLASH_ATTR updateSockRx(Websock *ws, char *data, int len, int flags)
if (strstarts(data, "STR:")) {
// pass string verbatim
UART_SendAsync(data+4, -1);
// debug loopback
// for(int i=4;i<strlen(data); i++) {
// ansi_parser(data[i]);
// }
}
else if (strstarts(data, "BTN:")) {
// send button as low ASCII value 1-9
@ -167,7 +172,7 @@ void ICACHE_FLASH_ATTR updateSockRx(Websock *ws, char *data, int len, int flags)
// Send as 1-based to user
sprintf(buf, "\033[%d;%dM", y+1, x+1);
UART_WriteString(UART0, buf, UART_TIMEOUT_US);
UART_SendAsync(buf, -1);
}
else {
ws_warn("Bad command.");

125
user/screen.c
Unescape View File

@ -48,13 +48,21 @@ static struct {
bool numpad_alt_mode; //!< Application Mode - affects how user input of control keys is sent
bool cursors_alt_mode; //!< Application mode for cursor keys
bool newline_mode;
bool newline_mode; // LNM - CR automatically sends LF
bool reverse;
// Vertical margin bounds (inclusive start/end of scrolling region)
int vm0;
int vm1;
char charset0;
char charset1;
} scr;
#define R0 scr.vm0
#define R1 scr.vm1
#define RH (scr.vm1 - scr.vm0 + 1)
typedef struct {
int x; //!< X coordinate
int y; //!< Y coordinate
@ -69,8 +77,10 @@ typedef struct {
// Other attribs
int charsetN;
bool wraparound; //!< Wrapping when EOL
bool origin_mode; // DECOM - absolute positioning is relative to vertical margins
bool selective_erase; // TODO implement
// Not saved/restored
// Not saved/restored FIXME those should not be saved, but are (a bug?)
bool insert_mode; //!< Insert mode (move rest of the line to the right)
bool visible; //!< Visible (not attribute, DEC special)
} CursorTypeDef;
@ -105,6 +115,8 @@ static volatile int notifyLock = 0;
if (cursor.hanging && cursor.x != W-1) cursor.hanging = false; \
} while(false)
#define cursor_inside_region() (cursor.y >= R0 && cursor.y <= R1)
//region --- Settings ---
/**
@ -198,6 +210,8 @@ cursor_reset(void)
cursor.hanging = false;
cursor.visible = true;
cursor.insert_mode = false;
cursor.selective_erase = false;
cursor.origin_mode = false;
cursor.charsetN = 0;
cursor.wraparound = true;
@ -235,6 +249,9 @@ screen_reset(void)
scr.charset0 = 'B';
scr.charset1 = '0';
scr.vm0 = 0;
scr.vm1 = H-1;
// size is left unchanged
screen_clear(CLEAR_ALL);
@ -385,7 +402,7 @@ screen_tab_reverse(int count)
/**
* Clear range, inclusive
*/
static inline void
static void ICACHE_FLASH_ATTR
clear_range(unsigned int from, unsigned int to)
{
if (to >= W*H) to = W*H-1;
@ -412,6 +429,7 @@ clear_range(unsigned int from, unsigned int to)
void ICACHE_FLASH_ATTR
screen_clear(ClearMode mode)
{
// Those ignore margins and DECOM
NOTIFY_LOCK();
switch (mode) {
case CLEAR_ALL:
@ -467,14 +485,15 @@ screen_clear_in_line(unsigned int count)
void screen_insert_lines(unsigned int lines)
{
if (!cursor_inside_region()) return; // can't insert if not inside region
NOTIFY_LOCK();
// shift the following lines
int targetStart = cursor.y + lines;
if (targetStart >= H) {
targetStart = H;
if (targetStart > R1) {
targetStart = R1-1;
} else {
// do the moving
for (int i = H-1; i >= targetStart; i--) {
for (int i = R1; i >= targetStart; i--) {
memcpy(screen+i*W, screen+(i-lines)*W, sizeof(Cell)*W);
}
}
@ -490,7 +509,9 @@ void screen_insert_lines(unsigned int lines)
void screen_delete_lines(unsigned int lines)
{
if (!cursor_inside_region()) return; // can't delete if not inside region
NOTIFY_LOCK();
// shift lines up
int targetEnd = H - 1 - lines;
if (targetEnd <= cursor.y) {
@ -503,7 +524,7 @@ void screen_delete_lines(unsigned int lines)
}
// clear the rest
clear_range(targetEnd*W, W*H-1);
clear_range(targetEnd*W, W*R1);
NOTIFY_DONE();
}
@ -551,6 +572,8 @@ void ICACHE_FLASH_ATTR
screen_fill_with_E(void)
{
NOTIFY_LOCK();
screen_reset(); // based on observation from xterm
Cell sample;
sample.c[0] = 'E';
sample.c[1] = 0;
@ -608,8 +631,8 @@ void ICACHE_FLASH_ATTR
screen_scroll_up(unsigned int lines)
{
NOTIFY_LOCK();
if (lines >= H - 1) {
screen_clear(CLEAR_ALL);
if (lines >= RH) {
clear_range(R0*W, (R1+1)*H-1);
goto done;
}
@ -619,11 +642,11 @@ screen_scroll_up(unsigned int lines)
}
int y;
for (y = 0; y < H - lines; y++) {
for (y = R0; y <= R1 - lines; y++) {
memcpy(screen + y * W, screen + (y + lines) * W, W * sizeof(Cell));
}
clear_range(y * W, W * H - 1);
clear_range(R0 * W+y * W, (R1+1)*W-1);
done:
NOTIFY_DONE();
@ -636,8 +659,8 @@ void ICACHE_FLASH_ATTR
screen_scroll_down(unsigned int lines)
{
NOTIFY_LOCK();
if (lines >= H - 1) {
screen_clear(CLEAR_ALL);
if (lines >= RH) {
clear_range(R0*W, (R1+1)*H-1);
goto done;
}
@ -647,11 +670,11 @@ screen_scroll_down(unsigned int lines)
}
int y;
for (y = H-1; y >= lines; y--) {
for (y = R1; y >= R0+lines; y--) {
memcpy(screen + y * W, screen + (y - lines) * W, W * sizeof(Cell));
}
clear_range(0, lines * W-1);
clear_range(R0*W, R0*W+ lines * W-1);
done:
NOTIFY_DONE();
}
@ -660,14 +683,18 @@ screen_scroll_down(unsigned int lines)
void ICACHE_FLASH_ATTR
screen_set_scrolling_region(int from, int to)
{
// TODO implement (also add to scr)
if (from == 0 && to == 0) {
// whole screen
} else if (from > 1 && from < H-1 && to > from) {
// set range
scr.vm0 = 0;
scr.vm1 = H-1;
} else if (from >= 0 && from < H-1 && to > from) {
scr.vm0 = from;
scr.vm1 = to;
} else {
// Bad range, do nothing
}
// Always move cursor home (may be translated due to DECOM)
screen_cursor_set(0, 0);
}
//endregion
@ -681,8 +708,18 @@ void ICACHE_FLASH_ATTR
screen_cursor_set(int y, int x)
{
NOTIFY_LOCK();
if (cursor.origin_mode) {
y += R0;
if (y > R1) y = R1;
if (y < R0) y = R0;
}
else {
if (y > H-1) y = H-1;
if (y < 0) y = 0;
}
if (x >= W) x = W - 1;
if (y >= H) y = H - 1;
if (x < 0) x = 0;
cursor.x = x;
cursor.y = y;
clear_invalid_hanging();
@ -719,7 +756,14 @@ void ICACHE_FLASH_ATTR
screen_cursor_set_y(int y)
{
NOTIFY_LOCK();
if (y >= H) y = H - 1;
if (cursor.origin_mode) {
y += R0;
if (y > R1) y = R1;
if (y < R0) y = R0;
} else {
if (y > H-1) y = H-1;
if (y < 0) y = 0;
}
cursor.y = y;
NOTIFY_DONE();
}
@ -740,21 +784,41 @@ screen_cursor_move(int dy, int dx, bool scroll)
cursor.hanging = false;
}
bool was_inside = cursor_inside_region();
cursor.x += dx;
cursor.y += dy;
if (cursor.x >= (int)W) cursor.x = W - 1;
if (cursor.x < (int)0) cursor.x = 0;
if (cursor.y < R0) {
if (was_inside) {
move = -(cursor.y - R0);
cursor.y = R0;
if (scroll) screen_scroll_down((unsigned int) move);
}
else {
// outside the region, just validate that we're not going offscreen
// scrolling is not possible in this case
if (cursor.y < 0) {
move = -cursor.y;
cursor.y = 0;
if (scroll) screen_scroll_down((unsigned int)move);
}
}
}
if (cursor.y > R1) {
if (was_inside) {
move = cursor.y - R1;
cursor.y = R1;
if (scroll) screen_scroll_up((unsigned int) move);
}
else {
// outside the region, just validate that we're not going offscreen
// scrolling is not possible in this case
if (cursor.y >= H) {
move = cursor.y - (H - 1);
cursor.y = H-1;
if (scroll) screen_scroll_up((unsigned int)move);
}
}
}
NOTIFY_DONE();
@ -850,7 +914,7 @@ screen_set_sgr_inverse(bool ena)
}
/**
* Check if coords are in range
* Check if coords are in range - used for verifying mouse clicks
*
* @param y
* @param x
@ -915,7 +979,8 @@ screen_set_newline_mode(bool nlm)
void ICACHE_FLASH_ATTR
screen_set_origin_mode(bool region_origin)
{
// TODO implement (also add to scr)
cursor.origin_mode = region_origin;
screen_cursor_set(0, 0);
}
void ICACHE_FLASH_ATTR
@ -989,10 +1054,10 @@ screen_putchar(const char *ch)
cursor.x = 0;
cursor.y++;
// Y wrap
if (cursor.y > H - 1) {
if (cursor.y > R1) {
// Scroll up, so we have space for writing
screen_scroll_up(1);
cursor.y = H - 1;
cursor.y = R1;
}
cursor.hanging = false;
@ -1039,7 +1104,7 @@ screen_putchar(const char *ch)
*/
static const u16 codepage_0[] =
{// Unicode ASCII SYM
0x25c6, // 96 ` ◆
0x2666, // 96 ` ♦
0x2592, // 97 a ▒
0x2409, // 98 b HT
0x240c, // 99 c FF

Write Preview
Loading…
Cancel
Save