181 lines
4.0 KiB
C++
181 lines
4.0 KiB
C++
#include "menudisplay.h"
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// local includes
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#include "tftinstance.h"
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namespace espgui {
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void MenuDisplay::start()
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{
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m_selectedIndex = 0;
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m_scrollOffset = 0;
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m_rotateOffset = 0;
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m_pressed = false;
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}
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void MenuDisplay::initScreen()
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{
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tft.fillScreen(TFT_BLACK);
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m_titleLabel.start();
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tft.fillRect(0, 34, tft.width(), 3, TFT_WHITE);
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for (auto &label : m_labels)
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label.start();
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runForEveryMenuItem([](MenuItem &item){
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item.start();
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});
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m_icons.fill(nullptr);
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m_highlightedIndex = -1;
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}
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void MenuDisplay::update()
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{
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if (!m_pressed)
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{
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const auto offset = m_rotateOffset;
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m_rotateOffset = 0;
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const auto itemCount = menuItemCount();
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if (itemCount)
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{
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if (m_selectedIndex == -1)
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m_selectedIndex = 0;
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m_selectedIndex = m_selectedIndex + offset;
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if (m_selectedIndex < 0)
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m_selectedIndex += itemCount;
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if (m_selectedIndex >= itemCount)
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m_selectedIndex -= itemCount;
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if (m_selectedIndex < m_scrollOffset)
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m_scrollOffset = m_selectedIndex;
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if (m_selectedIndex >= m_scrollOffset + m_labels.size())
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m_scrollOffset = m_selectedIndex - m_labels.size() + 1;
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}
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else
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{
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m_selectedIndex = -1;
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m_scrollOffset = 0;
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}
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runForEveryMenuItem([&](MenuItem &item){
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item.update();
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});
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}
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else
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{
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m_pressed = false;
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if (m_selectedIndex >= 0)
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getMenuItem(m_selectedIndex).triggered();
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}
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}
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void MenuDisplay::redraw()
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{
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tft.setTextFont(4);
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tft.setTextColor(TFT_YELLOW, TFT_BLACK);
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m_titleLabel.redraw(text());
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int i{0};
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auto labelsIter = std::begin(m_labels);
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auto iconsIter = std::begin(m_icons);
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int newHighlightedIndex{-1};
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const auto drawItemRect = [](const auto &label, const auto color){
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tft.drawRect(5,
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label.y()-1,
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240 - 10,
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lineHeight+2,
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color);
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};
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runForEveryMenuItem([&](MenuItem &item){
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const auto index = i++;
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if (index < m_scrollOffset)
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return;
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if (labelsIter == std::end(m_labels))
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return;
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const auto relativeIndex = index - m_scrollOffset;
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const auto selected = index == m_selectedIndex;
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if (selected)
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newHighlightedIndex = relativeIndex;
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else if (relativeIndex == m_highlightedIndex)
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drawItemRect(*labelsIter, TFT_BLACK);
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tft.setTextFont(item.font());
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tft.setTextColor(item.color(), TFT_BLACK);
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labelsIter->redraw(item.text());
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if (item.icon() != *iconsIter)
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{
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tft.fillRect(5, labelsIter->y()+1, 24, 24, TFT_BLACK);
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auto icon = item.icon();
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if (icon)
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{
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tft.setSwapBytes(true);
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tft.pushImage(6, labelsIter->y()+1, icon->WIDTH, icon->HEIGHT, icon->buffer);
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tft.setSwapBytes(false);
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}
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*iconsIter = icon;
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}
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if (selected && (relativeIndex != m_highlightedIndex))
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{
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drawItemRect(*labelsIter, TFT_WHITE);
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}
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labelsIter++;
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iconsIter++;
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});
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for (; labelsIter != std::end(m_labels); labelsIter++, iconsIter++)
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{
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const auto relativeIndex = std::distance(std::begin(m_labels), labelsIter);
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if (relativeIndex == m_highlightedIndex)
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drawItemRect(*labelsIter, TFT_BLACK);
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labelsIter->clear();
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if (*iconsIter)
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{
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tft.fillRect(5, labelsIter->y()+1, 24, 24, TFT_BLACK);
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*iconsIter = nullptr;
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}
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}
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m_highlightedIndex = newHighlightedIndex;
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}
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void MenuDisplay::stop()
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{
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runForEveryMenuItem([](MenuItem &item){
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item.stop();
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});
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}
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void MenuDisplay::rotate(int offset)
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{
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m_rotateOffset += offset;
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}
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void MenuDisplay::confirm()
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{
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m_pressed = true;
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}
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} // namespace espgui
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