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https://github.com/MarekZegare4/MeshCore-Solo.git
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db3f287c78
Raw UTF-8 message body was passed directly to display.print(), rendering Polish and other accented chars as garbage on the Adafruit font. Transliterating before wrapLines also fixes byte-count wrapping for multi-byte UTF-8 characters. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
#pragma once
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#include <helpers/ui/DisplayDriver.h>
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#include <Arduino.h>
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static const int FS_CHARS_MAX = 32; // max buffer per line (larger than any font needs)
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static const int FS_START_Y = 12; // header height (fixed, not font-dependent)
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struct FullscreenMsgView {
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int scroll;
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bool active;
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FullscreenMsgView() : scroll(0), active(false) {}
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enum Result { NONE, PREV, NEXT, CLOSE };
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void begin() { scroll = 0; active = true; }
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static int wrapLines(const char* text, int chars, char out[][FS_CHARS_MAX], int max_lines) {
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int count = 0;
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const char* p = text;
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while (*p && count < max_lines) {
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int len = strlen(p);
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if (len <= chars) {
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strncpy(out[count++], p, FS_CHARS_MAX - 1);
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out[count - 1][len < FS_CHARS_MAX ? len : FS_CHARS_MAX - 1] = '\0';
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break;
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}
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int brk = chars;
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for (int i = chars - 1; i > 0; i--) {
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if (p[i] == ' ') { brk = i; break; }
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}
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int copy = brk < FS_CHARS_MAX - 1 ? brk : FS_CHARS_MAX - 1;
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strncpy(out[count], p, copy);
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out[count++][copy] = '\0';
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p += brk + (p[brk] == ' ' ? 1 : 0);
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}
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return count;
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}
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int render(DisplayDriver& display, const char* sender, const char* text,
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bool has_prev, bool has_next) {
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display.setTextSize(1);
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const int lineH = display.getLineHeight();
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const int chars = (display.width() - 6) / display.getCharWidth();
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const int visible = (display.height() - FS_START_Y - lineH) / lineH;
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display.setColor(DisplayDriver::LIGHT);
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display.fillRect(0, 0, display.width(), 10);
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display.setColor(DisplayDriver::DARK);
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display.drawTextEllipsized(2, 1, display.width() - 4, sender);
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display.setColor(DisplayDriver::LIGHT);
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char trans_text[512];
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display.translateUTF8ToBlocks(trans_text, text, sizeof(trans_text));
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char lines[12][FS_CHARS_MAX];
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int lcount = wrapLines(trans_text, chars, lines, 12);
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int max_scroll = lcount > visible ? lcount - visible : 0;
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if (scroll > max_scroll) scroll = max_scroll;
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for (int i = 0; i < visible && (scroll + i) < lcount; i++) {
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display.setCursor(0, FS_START_Y + i * lineH);
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display.print(lines[scroll + i]);
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}
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if (scroll > 0) {
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display.setCursor(display.width() - 6, FS_START_Y);
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display.print("^");
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}
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if (scroll < max_scroll) {
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display.setCursor(display.width() - 6, FS_START_Y + (visible - 1) * lineH);
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display.print("v");
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}
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const int nav_y = display.height() - lineH;
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if (has_next) {
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display.setCursor(0, nav_y);
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display.print("<");
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}
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if (has_prev) {
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display.setCursor(display.width() - 6, nav_y);
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display.print(">");
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}
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return 300;
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}
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Result handleInput(char c) {
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if (c == KEY_UP) { if (scroll > 0) scroll--; return NONE; }
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if (c == KEY_DOWN) { scroll++; return NONE; }
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if (c == KEY_LEFT) return NEXT;
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if (c == KEY_RIGHT) return PREV;
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if (c == KEY_ENTER || c == KEY_CANCEL) return CLOSE;
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return NONE;
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}
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};
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