Something went wrong. Try again.
A fork of https://github.com/crosspoint-reader/crosspoint-reader
Something went wrong. Try again.
5.3 kB · 137 lines
C++
at master
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138#include "EpubReaderChapterSelectionActivity.h"
#include <GfxRenderer.h>#include <I18n.h>
#include "MappedInputManager.h"#include "components/UITheme.h"#include "fontIds.h"
int EpubReaderChapterSelectionActivity::getTotalItems() const { return epub->getTocItemsCount(); }
int EpubReaderChapterSelectionActivity::getPageItems() const { // Layout constants used in renderScreen constexpr int lineHeight = 30;
const int screenHeight = renderer.getScreenHeight(); const auto orientation = renderer.getOrientation(); // In inverted portrait, the button hints are drawn near the logical top. // Reserve vertical space so list items do not collide with the hints. const bool isPortraitInverted = orientation == GfxRenderer::Orientation::PortraitInverted; const int hintGutterHeight = isPortraitInverted ? 50 : 0; const int startY = 60 + hintGutterHeight; const int availableHeight = screenHeight - startY - lineHeight; // Clamp to at least one item to avoid division by zero and empty paging. return std::max(1, availableHeight / lineHeight);}
void EpubReaderChapterSelectionActivity::onEnter() { Activity::onEnter();
if (!epub) { return; }
selectorIndex = epub->getTocIndexForSpineIndex(currentSpineIndex); if (selectorIndex == -1) { selectorIndex = 0; }
// Trigger first update requestUpdate();}
void EpubReaderChapterSelectionActivity::onExit() { Activity::onExit(); }
void EpubReaderChapterSelectionActivity::loop() { const int pageItems = getPageItems(); const int totalItems = getTotalItems();
if (mappedInput.wasReleased(MappedInputManager::Button::Confirm)) { const auto newSpineIndex = epub->getSpineIndexForTocIndex(selectorIndex); if (newSpineIndex == -1) { ActivityResult result; result.isCancelled = true; setResult(std::move(result)); finish(); } else { setResult(ChapterResult{newSpineIndex}); finish(); } } else if (mappedInput.wasReleased(MappedInputManager::Button::Back)) { ActivityResult result; result.isCancelled = true; setResult(std::move(result)); finish(); }
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 EpubReaderChapterSelectionActivity::render(RenderLock&&) { renderer.clearScreen();
const auto pageWidth = renderer.getScreenWidth(); const auto orientation = renderer.getOrientation(); // Landscape orientation: reserve a horizontal gutter for button hints. const bool isLandscapeCw = orientation == GfxRenderer::Orientation::LandscapeClockwise; const bool isLandscapeCcw = orientation == GfxRenderer::Orientation::LandscapeCounterClockwise; // Inverted portrait: reserve vertical space for hints at the top. const bool isPortraitInverted = orientation == GfxRenderer::Orientation::PortraitInverted; const int hintGutterWidth = (isLandscapeCw || isLandscapeCcw) ? 30 : 0; // Landscape CW places hints on the left edge; CCW keeps them on the right. const int contentX = isLandscapeCw ? hintGutterWidth : 0; const int contentWidth = pageWidth - hintGutterWidth; const int hintGutterHeight = isPortraitInverted ? 50 : 0; const int contentY = hintGutterHeight; const int pageItems = getPageItems(); const int totalItems = getTotalItems();
// Manual centering to honor content gutters. const int titleX = contentX + (contentWidth - renderer.getTextWidth(UI_12_FONT_ID, tr(STR_SELECT_CHAPTER), EpdFontFamily::BOLD)) / 2; renderer.drawText(UI_12_FONT_ID, titleX, 15 + contentY, tr(STR_SELECT_CHAPTER), true, EpdFontFamily::BOLD);
const auto pageStartIndex = selectorIndex / pageItems * pageItems; // Highlight only the content area, not the hint gutters. renderer.fillRect(contentX, 60 + contentY + (selectorIndex % pageItems) * 30 - 2, contentWidth - 1, 30);
for (int i = 0; i < pageItems; i++) { int itemIndex = pageStartIndex + i; if (itemIndex >= totalItems) break; const int displayY = 60 + contentY + i * 30; const bool isSelected = (itemIndex == selectorIndex);
auto item = epub->getTocItem(itemIndex);
// Indent per TOC level while keeping content within the gutter-safe region. const int indentSize = contentX + 20 + (item.level - 1) * 15; const std::string chapterName = renderer.truncatedText(UI_10_FONT_ID, item.title.c_str(), contentWidth - 40 - indentSize);
renderer.drawText(UI_10_FONT_ID, indentSize, displayY, chapterName.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();}