Add widget kit, input layer with Compose Key, Launcher and demo apps

Steps 5 and 6 of M0. - lib/ui (host-tested): ListModel, LineEditor (UTF-8, byte-limited), wrapText, ToastQueue, DialogModel - lib/input (host-tested): KeyMapper turns keyboard state into logical keys (Fn arrows, ` Back, Fn+` Home) and composes accents with opt - src/ui: off-screen 16-bit frame pushed in one transfer (fixes the flicker), Status Bar, list, text, line editor, dialog, Toast widgets, Notifier (Toast + beep + LED), vendored public-domain Latin-1 fonts - Apps: minimal Launcher, Widget demo, Diagnostics (SD erase now behind a confirmation dialog) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
2026-10-02 10:35:48 +02:00
parent 36ebd23417
commit 879cb0d0b6
39 changed files with 2119 additions and 92 deletions
@@ -0,0 +1,60 @@
+#include "text_wrap.h"
+
+#include "utf8.h"
+
+namespace roro {
+
+namespace {
+
+void wrapParagraph(const std::string& para, int maxWidth, const MeasureText& measure,
+                   std::vector<std::string>& out) {
+    std::string line;
+    size_t pos = 0;
+    while (pos < para.size()) {
+        size_t space = para.find(' ', pos);
+        std::string word = para.substr(pos, space == std::string::npos ? std::string::npos : space - pos);
+        pos = space == std::string::npos ? para.size() : space + 1;
+
+        std::string candidate = line.empty() ? word : line + " " + word;
+        if (measure(candidate) <= maxWidth) {
+            line = candidate;
+            continue;
+        }
+        if (!line.empty()) {
+            out.push_back(line);
+            line.clear();
+        }
+        // The word alone may still be too wide: cut it character by character.
+        while (measure(word) > maxWidth) {
+            size_t cut = 0;
+            while (true) {
+                size_t nextCut = utf8::next(word, cut);
+                if (measure(word.substr(0, nextCut)) > maxWidth) break;
+                cut = nextCut;
+            }
+            if (cut == 0) cut = utf8::next(word, 0);  // a single character wider than the line
+            out.push_back(word.substr(0, cut));
+            word = word.substr(cut);
+        }
+        line = word;
+    }
+    out.push_back(line);
+}
+
+}  // namespace
+
+std::vector<std::string> wrapText(const std::string& text, int maxWidth, const MeasureText& measure) {
+    std::vector<std::string> lines;
+    if (text.empty()) return lines;
+    size_t start = 0;
+    while (true) {
+        size_t nl = text.find('\n', start);
+        wrapParagraph(text.substr(start, nl == std::string::npos ? std::string::npos : nl - start), maxWidth,
+                      measure, lines);
+        if (nl == std::string::npos) break;
+        start = nl + 1;
+    }
+    return lines;
+}
+
+}  // namespace roro