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feat(ui): chat bubbles, right-aligned compose button, keyboard cursor editing

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- MessagesScreen: shrink message boxes to fit content and anchor them
  right (outgoing) / left (incoming), like typical messengers; move
  the [+ send] compose button to the right edge to match; fix its
  frame margins (no descenders in the label made the symmetric padding
  look uneven) and reclaim the freed 2px for the message list.
- KeyboardWidget: add Hold-Enter cursor-positioning mode (LEFT/RIGHT
  move, UP/DOWN jump to start/end, Enter/Cancel exit) with a visual
  "CURSOR MODE" indicator, so edits and inserts can target any point
  in the typed text instead of always the end.
This commit is contained in:
Jakub
2026-07-17 14:40:59 +02:00
parent af0cd2116e
commit e439dd0fbe
2 changed files with 224 additions and 61 deletions
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140
examples/companion_radio/ui-new/KeyboardWidget.h
View File

@@ -297,6 +297,20 @@ static int kbUtf8LastCharBytes(const char* buf, int len) {
return n;
}
// Byte width of the codepoint STARTING at buf[pos] (pos in [0,len)) — the
// forward counterpart to kbUtf8LastCharBytes, for moving the edit cursor
// right by one whole codepoint instead of one byte.
static int kbUtf8CharBytesAt(const char* buf, int pos, int len) {
if (pos >= len) return 0;
uint8_t c = (uint8_t)buf[pos];
int n = 1;
if ((c & 0xE0) == 0xC0) n = 2;
else if ((c & 0xF0) == 0xE0) n = 3;
else if ((c & 0xF8) == 0xF0) n = 4;
if (pos + n > len) n = len - pos; // truncated/corrupt sequence: don't overrun
return n;
}
static const int KB_PH_MAX = 20; // max placeholders in list (PopupMenu::PM_MAX_ITEMS=24 is the hard ceiling)
static const int KB_PH_LEN = 30; // max placeholder string length incl. null -- sized for the longest
// CLI-command candidate (AdminScreen), not just the short {x} tokens
@@ -316,6 +330,8 @@ struct KeyboardWidget {
char buf[KB_MAX_LEN + 1];
int len;
int max_len;
int cursor_pos; // insertion point into buf, in bytes; defaults to len (append)
bool cursor_mode; // true while Hold-Enter has parked the grid to reposition cursor_pos
int row, col;
int page; // see totalPages()/pageIsAltAlphabet()/pageIsSymbols() below
bool caps;
@@ -434,6 +450,8 @@ struct KeyboardWidget {
strncpy(buf, initial, max_len);
buf[max_len] = '\0';
len = strlen(buf);
cursor_pos = len;
cursor_mode = false;
row = col = 0;
page = 0;
caps = false;
@@ -486,21 +504,30 @@ struct KeyboardWidget {
const int spec_y = chars_y + rows * cell_h;
const int spec_w = display.width() / KB_SPECIAL;
// multi-line text preview: cursor always on last preview line
// Multi-line text preview: the view follows cursor_pos (normally == len,
// i.e. the end — so this is identical to the old "always the last line"
// behaviour until cursor mode moves cursor_pos elsewhere, at which point
// the preview scrolls to keep the repositioned cursor in view).
int cpl = display.width() / cw; // chars per preview line
if (cpl < 1) cpl = 1;
if (cpl > KB_PREVIEW_CAP) cpl = KB_PREVIEW_CAP; // never overrun linebuf below
int cursor_line = len / cpl;
int cursor_line = cursor_pos / cpl;
int first_line = (cursor_line >= prev_lines) ? (cursor_line - prev_lines + 1) : 0;
int start = first_line * cpl;
for (int pl = 0; pl < prev_lines; pl++) {
int ps = start + pl * cpl;
int pe = ps + cpl;
bool cursor_here = (ps <= len && (len < pe || pl == prev_lines - 1));
bool cursor_here = (ps <= cursor_pos && (cursor_pos < pe || pl == prev_lines - 1));
char linebuf[KB_PREVIEW_CAP + 2]; // cpl chars + cursor '_' + NUL
if (cursor_here) {
int nc = len - ps; if (nc < 0) nc = 0; if (nc > cpl - 1) nc = cpl - 1;
snprintf(linebuf, sizeof(linebuf), "%.*s_", nc, buf + ps);
// Cursor drawn as an inserted '_' between whatever text precedes and
// follows it on this line -- reduces to the old "text + trailing _"
// when cursor_pos == len (after_n is always 0 in that case).
int before_n = cursor_pos - ps; if (before_n < 0) before_n = 0; if (before_n > cpl) before_n = cpl;
int line_text_end = (len < pe) ? len : pe;
int after_n = line_text_end - cursor_pos; if (after_n < 0) after_n = 0;
if (before_n + after_n > cpl) after_n = cpl - before_n;
snprintf(linebuf, sizeof(linebuf), "%.*s_%.*s", before_n, buf + ps, after_n, buf + ps + before_n);
} else if (len > ps) {
int nc = (len < pe) ? (len - ps) : cpl;
snprintf(linebuf, sizeof(linebuf), "%.*s", nc, buf + ps);
@@ -514,6 +541,22 @@ struct KeyboardWidget {
}
display.fillRect(0, sep_y, display.width(), display.sepH());
// Cursor-positioning mode: LEFT/RIGHT/UP/DOWN now drive the text cursor
// instead of the grid (see handleInput), so the grid would otherwise just
// sit there frozen with no sign anything's different. Replace it with an
// explicit hint instead.
if (cursor_mode) {
const int hh = lh + 2;
display.setColor(DisplayDriver::LIGHT);
display.fillRect(0, chars_y, display.width(), hh);
display.setColor(DisplayDriver::DARK);
display.drawTextCentered(display.width() / 2, chars_y + 1, "CURSOR MODE");
display.setColor(DisplayDriver::LIGHT);
display.drawTextCentered(display.width() / 2, chars_y + hh + 2, "L/R move");
display.drawTextCentered(display.width() / 2, chars_y + hh + 2 + lh, "U/D start/end");
return 50;
}
// character grid
if (isT9()) {
for (int r = 0; r < rows; r++) {
@@ -607,31 +650,51 @@ struct KeyboardWidget {
const char* ph = _ph_buf[idx];
int ph_len = strlen(ph);
// Contextual (refresh-hook) fields complete the in-progress word --
// the text since the last space -- instead of appending after it, so
// picking a match doesn't duplicate what's already been typed.
int base_len = len;
// the text since the last space, up to the cursor -- instead of
// appending after it, so picking a match doesn't duplicate what's
// already been typed. Anything after the cursor (if it's not at the
// end) shifts along with the insertion, same as a normal keystroke.
int base_len = cursor_pos;
if (_ph_refresh) {
while (base_len > 0 && buf[base_len - 1] != ' ') base_len--;
}
if (base_len + ph_len <= max_len) {
int tail_len = len - cursor_pos;
if (base_len + ph_len + tail_len <= max_len) {
memmove(buf + base_len + ph_len, buf + cursor_pos, tail_len);
memcpy(buf + base_len, ph, ph_len);
len = base_len + ph_len;
len = base_len + ph_len + tail_len;
cursor_pos = base_len + ph_len;
buf[len] = '\0';
}
}
return NONE;
}
// Cursor-positioning sub-mode (see the Hold-Enter block below): the grid
// selection is parked while LEFT/RIGHT walk cursor_pos one codepoint at a
// time and UP/DOWN jump to the very start/end -- Home/End, in effect.
// Enter/Cancel just leave the mode; the actual edit (insert/backspace)
// happens back in normal typing, now targeting the repositioned cursor.
if (cursor_mode) {
if (c == KEY_LEFT) { if (cursor_pos > 0) cursor_pos -= kbUtf8LastCharBytes(buf, cursor_pos); return NONE; }
if (c == KEY_RIGHT) { if (cursor_pos < len) cursor_pos += kbUtf8CharBytesAt(buf, cursor_pos, len); return NONE; }
if (c == KEY_UP) { cursor_pos = 0; return NONE; }
if (c == KEY_DOWN) { cursor_pos = len; return NONE; }
if (c == KEY_ENTER || c == KEY_CANCEL) { cursor_mode = false; return NONE; }
return NONE;
}
if (c == KEY_CANCEL) return CANCELLED;
const int rows = gridRows();
const int cols = gridCols();
// Hold-Enter is normally "cancel", but over the two keys where a long-press
// has its own well-known meaning on a phone keyboard, it does that instead:
// Shift -> toggle a persistent caps-lock (a plain tap is one-shot -- see the
// commit sites below); Backspace -> clear the whole field in one action
// instead of holding it down. Every other cell keeps hold-to-cancel.
// Hold-Enter is normally "cancel", but three places give it a more useful
// meaning instead: Shift -> toggle a persistent caps-lock (a plain tap is
// one-shot -- see the commit sites below); Backspace -> clear the whole
// field in one action instead of holding it down; anywhere on the letter/
// symbol grid -> enter cursor-positioning mode (see above). Every other
// special-row cell keeps hold-to-cancel.
if (c == KEY_CONTEXT_MENU) {
if (row == rows && col == 0) { // Shift
caps_lock = !caps_lock;
@@ -640,6 +703,12 @@ struct KeyboardWidget {
}
if (row == rows && col == 2) { // Backspace
len = 0; buf[0] = '\0';
cursor_pos = 0;
t9_cell = -1;
return NONE;
}
if (row < rows) { // any letter/symbol cell
cursor_mode = true;
t9_cell = -1;
return NONE;
}
@@ -691,18 +760,23 @@ struct KeyboardWidget {
bool cycling = (t9_cell == cell) && (millis() - t9_last_ms < KB_T9_TIMEOUT_MS);
if (cycling) {
t9_cycle = (t9_cycle + 1) % total;
if (len > 0) {
if (cursor_pos > 0) {
char one[5];
if (t9_cycle < glen) kbUtf8CharAt(group, t9_cycle, one);
else { one[0] = (char)('1' + cell); one[1] = '\0'; }
char shown[5];
kbApplyCapsUtf8(one, caps, shown, sizeof(shown));
int old_n = kbUtf8LastCharBytes(buf, len);
int new_len = len - old_n;
// Replace the codepoint just before the cursor (what the previous
// tap inserted), preserving anything after the cursor too.
int old_n = kbUtf8LastCharBytes(buf, cursor_pos);
int new_pos = cursor_pos - old_n;
int tail_len = len - cursor_pos;
int n = (int)strlen(shown);
if (new_len + n <= max_len) {
memcpy(buf + new_len, shown, n);
len = new_len + n;
if (new_pos + n + tail_len <= max_len) {
memmove(buf + new_pos + n, buf + cursor_pos, tail_len);
memcpy(buf + new_pos, shown, n);
len = new_pos + n + tail_len;
cursor_pos = new_pos + n;
buf[len] = '\0';
}
}
@@ -710,9 +784,12 @@ struct KeyboardWidget {
char one[5]; kbUtf8CharAt(group, 0, one);
char shown[5]; kbApplyCapsUtf8(one, caps, shown, sizeof(shown));
int n = (int)strlen(shown);
int tail_len = len - cursor_pos;
if (len + n <= max_len) {
memcpy(buf + len, shown, n);
memmove(buf + cursor_pos + n, buf + cursor_pos, tail_len);
memcpy(buf + cursor_pos, shown, n);
len += n;
cursor_pos += n;
buf[len] = '\0';
t9_cell = cell;
t9_cycle = 0;
@@ -724,9 +801,12 @@ struct KeyboardWidget {
char shown[3];
kbApplyCapsUtf8(cellStr(row, col), caps, shown, sizeof(shown));
int n = (int)strlen(shown);
int tail_len = len - cursor_pos;
if (len + n <= max_len) {
memcpy(buf + len, shown, n);
memmove(buf + cursor_pos + n, buf + cursor_pos, tail_len);
memcpy(buf + cursor_pos, shown, n);
len += n;
cursor_pos += n;
buf[len] = '\0';
if (caps && !caps_lock) caps = false; // one-shot: revert after the letter it capitalised
}
@@ -737,10 +817,20 @@ struct KeyboardWidget {
// on this key, see handleInput's top), a tap cancels the lock instead.
case 0: if (caps_lock) { caps = false; caps_lock = false; } else { caps = !caps; } break;
case 1:
if (len < max_len) { buf[len++] = ' '; buf[len] = '\0'; }
if (len < max_len) {
memmove(buf + cursor_pos + 1, buf + cursor_pos, len - cursor_pos);
buf[cursor_pos] = ' ';
len++; cursor_pos++;
buf[len] = '\0';
}
break;
case 2:
if (len > 0) { len -= kbUtf8LastCharBytes(buf, len); buf[len] = '\0'; }
if (cursor_pos > 0) {
int n = kbUtf8LastCharBytes(buf, cursor_pos);
memmove(buf + cursor_pos - n, buf + cursor_pos, len - cursor_pos);
len -= n; cursor_pos -= n;
buf[len] = '\0';
}
break;
case 3:
if (_ph_refresh) _ph_refresh(*this, _ph_refresh_ctx); // contextual repopulate, if wired up

145
examples/companion_radio/ui-new/MessagesScreen.h
View File

@@ -332,27 +332,65 @@ class MessagesScreen : public UIScreen {
// Selection frame for one history message box, shared by the DM/room and
// channel history lists. Selected = solid fill; unselected = outline with a
// filled header strip. Leaves the ink DARK (for the sender row drawn next).
static void drawHistRowFrame(DisplayDriver& d, int y, int bh, int reserve, int lh, bool sel) {
// Spans exactly [box_x, box_x+box_w) — the caller sizes/positions the bubble
// (see computeBubbleBox below), this just draws whatever box it's given.
static void drawHistRowFrame(DisplayDriver& d, int box_x, int box_w, int y, int bh, int lh, bool sel) {
d.setColor(DisplayDriver::LIGHT);
if (sel) {
d.fillRect(0, y, d.width() - reserve, bh);
d.fillRect(box_x, y, box_w, bh);
} else {
d.drawRect(0, y, d.width() - reserve, bh);
d.fillRect(1, y + 1, d.width() - 2 - reserve, lh);
d.drawRect(box_x, y, box_w, bh);
d.fillRect(box_x + 1, y + 1, box_w - 2, lh);
}
d.setColor(DisplayDriver::DARK);
}
// Bottom-left "[+ send]" compose button, shared by both history lists:
// bordered when idle, inverted (filled) when selected. Always reset to LIGHT
// first so it stays visible regardless of the ink the message loop left.
// Width of an ack/delivery glyph (see drawAckGlyph) — needed up front to size
// an outgoing bubble before it's drawn.
static int ackGlyphWidth(DisplayDriver& d, AckState s, int sends) {
const int sc = miniIconScale(d);
switch (s) {
case ACK_PENDING: return sends * 3 * sc; // dot+gap pitch (icons.h), slightly generous
case ACK_OK: return ICON_CHECK.w * sc;
case ACK_FAIL: return ICON_CROSS.w * sc;
default: return 0;
}
}
// A chat bubble's horizontal extent: shrunk to fit its own content (the
// sender+ack+age header line vs the wrapped/measured body, whichever is
// wider), capped at the full available width, and anchored to the right for
// outgoing ("Me") messages or the left for incoming ones — so which side a
// bubble sits on shows who sent it, the same convention as a typical
// messenger. Everything else in the row (sender, age, ack glyph, body) is
// then drawn relative to this box's own x instead of the screen edge.
struct BubbleBox { int x, w; };
static BubbleBox computeBubbleBox(int full_avail, bool outgoing, int header_w, int body_w) {
int w = header_w > body_w ? header_w : body_w;
if (w > full_avail) w = full_avail;
if (w < 1) w = 1;
return { outgoing ? (full_avail - w) : 0, w };
}
// Bottom-right "[+ send]" compose button, shared by both history lists:
// bordered when idle, inverted (filled) when selected. Right-aligned to
// match the outgoing ("Me") bubbles anchored on that side, so composing
// sits under your own messages rather than the other side's. Box is exactly
// lh tall (no added border padding) — the text has no descenders ("[+
// send]"), so padding sized against the font's full ascent+descent cell
// read as a lopsided 1px-top/3px-bottom gap instead of an even border;
// tight framing avoids that and gives the history list back the 2px. Always
// reset to LIGHT first so it stays visible regardless of the ink the
// message loop left.
static void drawComposeButton(DisplayDriver& d, int cby, int lh, bool sel) {
const char* ctxt = "[+ send]";
int ctw = d.getTextWidth(ctxt);
int bw = ctw + 4;
int bx = d.width() - bw;
d.setColor(DisplayDriver::LIGHT);
if (sel) { d.fillRect(0, cby - 1, ctw + 4, lh + 2); d.setColor(DisplayDriver::DARK); }
else d.drawRect(0, cby - 1, ctw + 4, lh + 2);
d.setCursor(2, cby);
if (sel) { d.fillRect(bx, cby, bw, lh); d.setColor(DisplayDriver::DARK); }
else d.drawRect(bx, cby, bw, lh);
d.setCursor(bx + 2, cby);
d.print(ctxt);
d.setColor(DisplayDriver::LIGHT);
}
@@ -885,7 +923,6 @@ public:
int lh = display.getLineHeight();
int item_h = display.lineStep();
int start_y = display.listStart();
int cw = display.getCharWidth();
if (_phase == MODE_SELECT) {
display.drawCenteredHeader("MESSAGE", true, _ctx_menu.active);
@@ -998,7 +1035,7 @@ public:
}
int hist_start_y = display.headerH();
int cby = display.height() - lh - 2;
int cby = display.height() - lh; // compose button is now exactly lh tall, no added border padding
char title[24];
snprintf(title, sizeof(title), "%.23s", filtered_name);
@@ -1068,20 +1105,37 @@ public:
char age[6]; geo::fmtAgeShort(age, sizeof(age), now_ts, e.timestamp);
int age_w = age[0] ? display.getTextWidth(age) + 3 : 0;
drawHistRowFrame(display, y, bh, reserve, lh, sel);
display.drawTextEllipsized(3, y + 1, display.width() - cw - 2 - age_w - reserve, sender);
if (e.outgoing) { // delivery marker after "Me"
int gx = 3 + display.getTextWidth(sender) + 3;
drawAckGlyph(display, gx, y + 1, _history.dmEffectiveStatus(e), e.attempt + 1);
}
if (age[0]) { display.setCursor(display.width() - age_w - reserve, y + 1); display.print(age); }
if (!sel) display.setColor(DisplayDriver::LIGHT);
// Size the bubble to its own content before drawing anything (see
// computeBubbleBox): the header (sender+ack+age) vs the body, measured
// once here and reused below instead of re-wrapping.
int full_avail = display.width() - reserve;
int ack_w = e.outgoing ? (3 + ackGlyphWidth(display, _history.dmEffectiveStatus(e), e.attempt + 1)) : 0;
int header_w = 3 + display.getTextWidth(sender) + ack_w + age_w + 3;
int body_w, nl = 0;
if (portrait_expand) {
display.translateUTF8ToBlocks(s_wrap_trans, body, sizeof(s_wrap_trans));
int nl = FullscreenMsgView::wrapLines(display, s_wrap_trans, display.width() - 6 - reserve, s_wrap_lines, 8);
for (int li = 0; li < nl; li++) { display.setCursor(3, y + (li + 1) * lh + 1); display.print(s_wrap_lines[li]); }
nl = FullscreenMsgView::wrapLines(display, s_wrap_trans, full_avail - 6, s_wrap_lines, 8);
body_w = 0;
for (int li = 0; li < nl; li++) { int w = display.getTextWidth(s_wrap_lines[li]); if (w > body_w) body_w = w; }
body_w += 6;
} else {
display.drawTextEllipsized(3, y + lh + 1, display.width() - cw - 2, body);
int raw_w = display.getTextWidth(body);
body_w = (raw_w > full_avail - 6 ? full_avail - 6 : raw_w) + 6;
}
BubbleBox box = computeBubbleBox(full_avail, e.outgoing, header_w, body_w);
drawHistRowFrame(display, box.x, box.w, y, bh, lh, sel);
display.drawTextEllipsized(box.x + 3, y + 1, box.w - 6 - age_w, sender);
if (e.outgoing) { // delivery marker after "Me"
int gx = box.x + 3 + display.getTextWidth(sender) + 3;
drawAckGlyph(display, gx, y + 1, _history.dmEffectiveStatus(e), e.attempt + 1);
}
if (age[0]) { display.setCursor(box.x + box.w - age_w, y + 1); display.print(age); }
if (!sel) display.setColor(DisplayDriver::LIGHT);
if (portrait_expand) {
for (int li = 0; li < nl; li++) { display.setCursor(box.x + 3, y + (li + 1) * lh + 1); display.print(s_wrap_lines[li]); }
} else {
display.drawTextEllipsized(box.x + 3, y + lh + 1, box.w - 6, body);
}
}
@@ -1139,7 +1193,7 @@ public:
}
int hist_start_y = display.headerH();
int cby = display.height() - lh - 2;
int cby = display.height() - lh; // compose button is now exactly lh tall, no added border padding
ChannelDetails ch;
the_mesh.getChannel(_sel_channel_idx, ch);
@@ -1220,24 +1274,43 @@ public:
char age[6]; geo::fmtAgeShort(age, sizeof(age), now_ts, _history.chAtPos(ring_pos).timestamp);
int age_w = age[0] ? display.getTextWidth(age) + 3 : 0;
const char* body = skipReplyPrefix(msg_part);
drawHistRowFrame(display, y, bh, reserve, lh, sel);
display.drawTextEllipsized(3, y + 1, display.width() - cw - 2 - age_w - reserve, sender);
// Channels have no recipient ACK — only show ✓ once a repeater echo
// confirms the send was relayed into the mesh; otherwise no marker
// (absence is normal, not a failure).
if (strcmp(sender, "Me") == 0 && _history.chAtPos(ring_pos).relay_status == ACK_OK) {
int gx = 3 + display.getTextWidth(sender) + 3;
// Size the bubble to its own content before drawing anything (see
// computeBubbleBox): the header (sender+ack+age) vs the body, measured
// once here and reused below instead of re-wrapping. Channels have no
// recipient ACK — only show ✓ once a repeater echo confirms the send
// was relayed into the mesh; otherwise no marker (absence is normal).
bool outgoing = strcmp(sender, "Me") == 0;
bool show_ack = outgoing && _history.chAtPos(ring_pos).relay_status == ACK_OK;
int full_avail = display.width() - reserve;
int ack_w = show_ack ? (3 + ackGlyphWidth(display, ACK_OK, 1)) : 0;
int header_w = 3 + display.getTextWidth(sender) + ack_w + age_w + 3;
int body_w, nl = 0;
if (portrait_expand) {
display.translateUTF8ToBlocks(s_wrap_trans, body, sizeof(s_wrap_trans));
nl = FullscreenMsgView::wrapLines(display, s_wrap_trans, full_avail - 6, s_wrap_lines, 8);
body_w = 0;
for (int li = 0; li < nl; li++) { int w = display.getTextWidth(s_wrap_lines[li]); if (w > body_w) body_w = w; }
body_w += 6;
} else {
int raw_w = display.getTextWidth(body);
body_w = (raw_w > full_avail - 6 ? full_avail - 6 : raw_w) + 6;
}
BubbleBox box = computeBubbleBox(full_avail, outgoing, header_w, body_w);
drawHistRowFrame(display, box.x, box.w, y, bh, lh, sel);
display.drawTextEllipsized(box.x + 3, y + 1, box.w - 6 - age_w, sender);
if (show_ack) {
int gx = box.x + 3 + display.getTextWidth(sender) + 3;
drawAckGlyph(display, gx, y + 1, ACK_OK);
}
if (age[0]) { display.setCursor(display.width() - age_w - reserve, y + 1); display.print(age); }
if (age[0]) { display.setCursor(box.x + box.w - age_w, y + 1); display.print(age); }
if (!sel) display.setColor(DisplayDriver::LIGHT);
if (portrait_expand) {
display.translateUTF8ToBlocks(s_wrap_trans, skipReplyPrefix(msg_part), sizeof(s_wrap_trans));
int nl = FullscreenMsgView::wrapLines(display, s_wrap_trans, display.width() - 6 - reserve, s_wrap_lines, 8);
for (int li = 0; li < nl; li++) { display.setCursor(3, y + (li + 1) * lh + 1); display.print(s_wrap_lines[li]); }
for (int li = 0; li < nl; li++) { display.setCursor(box.x + 3, y + (li + 1) * lh + 1); display.print(s_wrap_lines[li]); }
} else {
display.drawTextEllipsized(3, y + lh + 1, display.width() - cw - 2, skipReplyPrefix(msg_part));
display.drawTextEllipsized(box.x + 3, y + lh + 1, box.w - 6, body);
}
}