113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
#include "EpubReaderFootnotesActivity.h"
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#include <GfxRenderer.h>
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#include <I18n.h>
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#include <algorithm>
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#include "MappedInputManager.h"
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#include "components/UITheme.h"
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#include "fontIds.h"
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void EpubReaderFootnotesActivity::onEnter() {
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Activity::onEnter();
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selectedIndex = 0;
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requestUpdate();
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}
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void EpubReaderFootnotesActivity::onExit() { Activity::onExit(); }
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void EpubReaderFootnotesActivity::loop() {
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ButtonEventManager::ButtonEvent ev;
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while (buttonEvents.consumeEvent(ev)) {
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if (ev.button == MappedInputManager::Button::Back && ev.type == ButtonEventManager::PressType::Short) {
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ActivityResult result;
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result.isCancelled = true;
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setResult(std::move(result));
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finish();
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return;
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}
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if (ev.button == MappedInputManager::Button::Confirm && ev.type == ButtonEventManager::PressType::Short) {
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if (selectedIndex >= 0 && selectedIndex < static_cast<int>(footnotes.size())) {
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setResult(FootnoteResult{footnotes[selectedIndex].href});
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finish();
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}
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return;
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}
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if ((ev.button == MappedInputManager::Button::PageBack || ev.button == MappedInputManager::Button::Left) &&
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ev.type == ButtonEventManager::PressType::Short) {
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advanceSelection(-1);
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return;
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}
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if ((ev.button == MappedInputManager::Button::PageForward || ev.button == MappedInputManager::Button::Right) &&
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ev.type == ButtonEventManager::PressType::Short) {
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advanceSelection(1);
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return;
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}
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}
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buttonNavigator.onNextRelease([this] { advanceSelection(1); });
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buttonNavigator.onPreviousRelease([this] { advanceSelection(-1); });
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buttonNavigator.onNextContinuous([this] { advanceSelection(1); });
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buttonNavigator.onPreviousContinuous([this] { advanceSelection(-1); });
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}
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void EpubReaderFootnotesActivity::advanceSelection(int delta) {
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if (footnotes.empty()) {
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return;
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}
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const int n = static_cast<int>(footnotes.size());
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selectedIndex = ((selectedIndex + delta) % n + n) % n;
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requestUpdate();
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}
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void EpubReaderFootnotesActivity::render(RenderLock&&) {
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renderer.clearScreen();
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renderer.drawCenteredText(UI_12_FONT_ID, 15, tr(STR_FOOTNOTES), true, EpdFontFamily::BOLD);
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if (footnotes.empty()) {
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renderer.drawCenteredText(UI_10_FONT_ID, 90, tr(STR_NO_FOOTNOTES));
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const auto labels = mappedInput.mapLabels(tr(STR_BACK), "", "", "");
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GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
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renderer.displayBuffer();
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return;
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}
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constexpr int startY = 50;
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constexpr int lineHeight = 36;
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const Rect contentRect = UITheme::getContentRect(renderer, true, false);
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constexpr int marginLeft = 20;
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const int visibleCount = std::max(1, (contentRect.height - startY) / lineHeight);
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if (selectedIndex < scrollOffset) scrollOffset = selectedIndex;
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if (selectedIndex >= scrollOffset + visibleCount) scrollOffset = selectedIndex - visibleCount + 1;
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for (int i = scrollOffset; i < static_cast<int>(footnotes.size()) && i < scrollOffset + visibleCount; i++) {
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const int y = contentRect.y + startY + (i - scrollOffset) * lineHeight;
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const bool isSelected = (i == selectedIndex);
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if (isSelected) {
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renderer.fillRect(contentRect.x, y, contentRect.width, lineHeight, true);
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}
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// Show footnote number and abbreviated href
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std::string label = footnotes[i].number;
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if (label.empty()) {
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label = tr(STR_LINK);
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}
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renderer.drawText(UI_10_FONT_ID, contentRect.x + marginLeft, y + 4, label.c_str(), !isSelected);
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}
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const auto labels = mappedInput.mapLabels(tr(STR_BACK), tr(STR_SELECT), "", "");
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GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
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renderer.displayBuffer();
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}
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