Add TOC support

Co-authored-by: Copilot <copilot@github.com>
2026-04-23 21:27:14 +02:00
parent a90290a596
commit 01a9d7cb36
7 changed files with 502 additions and 21 deletions
@@ -0,0 +1,110 @@
+#include "MdReaderTocSelectionActivity.h"
+
+#include <algorithm>
+
+#include <GfxRenderer.h>
+#include <I18n.h>
+
+#include "components/UITheme.h"
+#include "fontIds.h"
+
+int MdReaderTocSelectionActivity::getTotalItems() const { return static_cast<int>(headings.size()); }
+
+int MdReaderTocSelectionActivity::getPageItems() const {
+  constexpr int lineHeight = 30;
+  const Rect contentRect = UITheme::getContentRect(renderer, true, false);
+  const int startY = 60 + contentRect.y;
+  const int availableHeight = contentRect.y + contentRect.height - startY - lineHeight;
+  return std::max(1, availableHeight / lineHeight);
+}
+
+void MdReaderTocSelectionActivity::onEnter() {
+  Activity::onEnter();
+
+  if (selectorIndex < 0 || selectorIndex >= getTotalItems()) {
+    selectorIndex = 0;
+  }
+
+  requestUpdate();
+}
+
+void MdReaderTocSelectionActivity::onExit() { Activity::onExit(); }
+
+void MdReaderTocSelectionActivity::loop() {
+  const int pageItems = getPageItems();
+  const int totalItems = getTotalItems();
+
+  if (mappedInput.wasReleased(MappedInputManager::Button::Confirm)) {
+    if (selectorIndex >= 0 && selectorIndex < totalItems) {
+      setResult(PageResult{static_cast<uint32_t>(headings[selectorIndex].pageIndex)});
+    } else {
+      ActivityResult result;
+      result.isCancelled = true;
+      setResult(std::move(result));
+    }
+    finish();
+    return;
+  }
+
+  if (mappedInput.wasReleased(MappedInputManager::Button::Back)) {
+    ActivityResult result;
+    result.isCancelled = true;
+    setResult(std::move(result));
+    finish();
+    return;
+  }
+
+  buttonNavigator.onNextRelease([this, totalItems] {
+    selectorIndex = ButtonNavigator::nextIndex(selectorIndex, totalItems);
+    requestUpdate();
+  });
+
+  buttonNavigator.onPreviousRelease([this, totalItems] {
+    selectorIndex = ButtonNavigator::previousIndex(selectorIndex, totalItems);
+    requestUpdate();
+  });
+
+  buttonNavigator.onNextContinuous([this, totalItems, pageItems] {
+    selectorIndex = ButtonNavigator::nextPageIndex(selectorIndex, totalItems, pageItems);
+    requestUpdate();
+  });
+
+  buttonNavigator.onPreviousContinuous([this, totalItems, pageItems] {
+    selectorIndex = ButtonNavigator::previousPageIndex(selectorIndex, totalItems, pageItems);
+    requestUpdate();
+  });
+}
+
+void MdReaderTocSelectionActivity::render(RenderLock&&) {
+  renderer.clearScreen();
+
+  const Rect contentRect = UITheme::getContentRect(renderer, true, false);
+  const int pageItems = getPageItems();
+  const int totalItems = getTotalItems();
+
+  const int titleX =
+      contentRect.x +
+      (contentRect.width - renderer.getTextWidth(UI_12_FONT_ID, tr(STR_SELECT_CHAPTER), EpdFontFamily::BOLD)) / 2;
+  renderer.drawText(UI_12_FONT_ID, titleX, 15 + contentRect.y, tr(STR_SELECT_CHAPTER), true, EpdFontFamily::BOLD);
+
+  const int pageStartIndex = selectorIndex / pageItems * pageItems;
+  renderer.fillRect(contentRect.x, 60 + contentRect.y + (selectorIndex % pageItems) * 30 - 2, contentRect.width - 1,
+                    30);
+
+  for (int i = 0; i < pageItems; i++) {
+    int itemIndex = pageStartIndex + i;
+    if (itemIndex >= totalItems) break;
+    const int displayY = 60 + contentRect.y + i * 30;
+    const bool isSelected = (itemIndex == selectorIndex);
+
+    const auto& heading = headings[itemIndex];
+    const int indentSize = contentRect.x + 20 + (heading.level - 1) * 10;
+    const std::string title = renderer.truncatedText(UI_10_FONT_ID, heading.title.c_str(), contentRect.width - 40 - indentSize);
+    renderer.drawText(UI_10_FONT_ID, indentSize, displayY, title.c_str(), !isSelected);
+  }
+
+  const auto labels = mappedInput.mapLabels(tr(STR_BACK), tr(STR_SELECT), tr(STR_DIR_UP), tr(STR_DIR_DOWN));
+  GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
+
+  renderer.displayBuffer();
+}