80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
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#pragma once
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#include <Epub/Page.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/semphr.h>
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#include <freertos/task.h>
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#include <functional>
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#include <memory>
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#include <string>
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#include <vector>
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#include "../Activity.h"
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/**
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* EpubWordSelectionActivity allows selecting a word from the current EPUB page.
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* Displays the page with a cursor that can navigate between words.
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*/
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class EpubWordSelectionActivity final : public Activity {
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// Word info for selection
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struct WordInfo {
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std::string text; // Named 'text' to avoid Arduino's 'word' macro
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int16_t x;
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int16_t y;
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int16_t width;
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int16_t height;
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EpdFontFamily::Style style;
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};
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TaskHandle_t displayTaskHandle = nullptr;
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SemaphoreHandle_t renderingMutex = nullptr;
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bool updateRequired = false;
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const std::unique_ptr<Page> page;
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const int fontId;
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const int xOffset;
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const int yOffset;
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const std::function<void(const std::string&)> onWordSelected;
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const std::function<void()> onCancel;
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// Word navigation state
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std::vector<WordInfo> allWords;
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int selectedWordIndex = 0;
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int currentLineIndex = 0;
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static void taskTrampoline(void* param);
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[[noreturn]] void displayTaskLoop();
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void render() const;
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void buildWordList();
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int findWordIndexForLine(int lineIndex) const;
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int findLineForWordIndex(int wordIndex) const;
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public:
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/**
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* Constructor
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* @param renderer Graphics renderer
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* @param mappedInput Input manager
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* @param page The current page to select words from (ownership transferred)
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* @param fontId Font ID used for rendering
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* @param xOffset X offset for rendering
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* @param yOffset Y offset for rendering
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* @param onWordSelected Callback when a word is selected
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* @param onCancel Callback when selection is cancelled
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*/
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explicit EpubWordSelectionActivity(GfxRenderer& renderer, MappedInputManager& mappedInput, std::unique_ptr<Page> page,
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int fontId, int xOffset, int yOffset,
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const std::function<void(const std::string&)>& onWordSelected,
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const std::function<void()>& onCancel)
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: Activity("EpubWordSelection", renderer, mappedInput),
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page(std::move(page)),
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fontId(fontId),
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xOffset(xOffset),
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yOffset(yOffset),
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onWordSelected(onWordSelected),
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onCancel(onCancel) {}
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void onEnter() override;
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void onExit() override;
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void loop() override;
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};
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