combine with desktop project

Signed-off-by: Peter Siegmund <developer@mars3142.org>

components/justus/src/common/PSMenu.cpp

@@ -0,0 +1,161 @@
+#include "common/PSMenu.h"
+
+#include "u8g2.h"
+#include "common/ScrollBar.h"
+#include "PushButton.h"
+
+PSMenu::PSMenu(menu_options_t* options)
+    : Widget(options->u8g2)
+    , m_options(options) {
+    m_options->onButtonClicked = [this](const uint8_t button) { onButtonClicked(button); };
+}
+
+PSMenu::~PSMenu() {
+    m_options->onButtonClicked = nullptr;
+}
+
+void PSMenu::render() {
+    if(m_selected_item < 0) {
+        onPressedDown();
+    }
+
+    u8g2_SetDrawColor(u8g2, 0);
+    u8g2_DrawBox(u8g2, 0, 0, u8g2->width, u8g2->height);
+
+    u8g2_SetDrawColor(u8g2, 1);
+
+    drawScrollBar();
+    drawSelectionBox();
+
+    int x = 8; // sure?
+    auto widget = m_items.at(m_selected_item);
+    renderWidget(
+        widget.getType(), u8g2_font_helvB08_tr, x, u8g2->height / 2 + 3, widget.getText().c_str());
+
+    if(m_selected_item > 0) {
+        auto item = m_items.at(m_selected_item - 1);
+        renderWidget(item.getType(), u8g2_font_haxrcorp4089_tr, x, 14, item.getText().c_str());
+    }
+    if(m_selected_item < m_items.size() - 1) {
+        auto item = m_items.at(m_selected_item + 1);
+        renderWidget(
+            item.getType(),
+            u8g2_font_haxrcorp4089_tr,
+            x,
+            u8g2->height - 10,
+            item.getText().c_str());
+    }
+}
+
+void PSMenu::renderWidget(
+    const uint8_t type,
+    const uint8_t* font,
+    const int x,
+    const int y,
+    const char* text) const {
+    switch(type) {
+    case 0: // text
+        u8g2_SetFont(u8g2, font);
+        u8g2_DrawStr(u8g2, x, y, text);
+        break;
+
+    default:
+        break;
+    }
+}
+
+void PSMenu::onButtonClicked(uint8_t button) {
+    switch(button) {
+    case BUTTON_UP:
+        onPressedUp();
+        break;
+
+    case BUTTON_DOWN:
+        onPressedDown();
+        break;
+
+    case BUTTON_LEFT:
+        onPressedLeft();
+        break;
+
+    case BUTTON_RIGHT:
+        onPressedRight();
+        break;
+
+    case BUTTON_SELECT:
+        onPressedSelect();
+        break;
+
+    case BUTTON_BACK:
+        onPressedBack();
+        break;
+
+    default:
+        break;
+    }
+}
+
+void PSMenu::onPressedDown() {
+    if(m_selected_item == m_items.size() - 1) {
+        m_selected_item = 0;
+    } else {
+        m_selected_item++;
+    }
+}
+
+void PSMenu::onPressedUp() {
+    if(m_selected_item == 0) {
+        m_selected_item = m_items.size() - 1;
+    } else {
+        m_selected_item--;
+    }
+}
+
+void PSMenu::onPressedLeft() {
+    //
+}
+
+void PSMenu::onPressedRight() {
+    ///
+}
+
+void PSMenu::onPressedSelect() const {
+    m_items.at(m_selected_item).callback(m_selected_item);
+}
+
+void PSMenu::onPressedBack() const {
+    if(m_options && m_options->popScreen) {
+        m_options->popScreen();
+    }
+}
+
+void PSMenu::addText(const std::string& text, const MenuCallback& callback) {
+    m_items.emplace_back(0, text, callback);
+}
+
+void PSMenu::addSwitch(const std::string& text, std::string& value, const MenuCallback& callback) {
+    m_items.emplace_back(1, text, value, callback);
+}
+
+void PSMenu::addNumber(const std::string& text, std::string& value, const MenuCallback& callback) {
+    m_items.emplace_back(2, text, value, callback);
+}
+
+void PSMenu::drawScrollBar() const {
+    ScrollBar scrollBar(m_options, u8g2->width - 3, 3, 1, u8g2->height - 6);
+    scrollBar.refresh(m_selected_item, m_items.size());
+    scrollBar.render();
+}
+
+void PSMenu::drawSelectionBox() const {
+    const auto displayHeight = u8g2->height;
+    const auto displayWidth = u8g2->width;
+    constexpr auto rightPadding = 8;
+    const auto boxHeight = displayHeight / 3;
+    const auto y = boxHeight * 2 - 2;
+    const auto x = displayWidth - rightPadding;
+
+    u8g2_DrawRFrame(u8g2, 2, boxHeight, displayWidth - rightPadding, boxHeight, 3);
+    u8g2_DrawLine(u8g2, 4, y, displayWidth - rightPadding, y);
+    u8g2_DrawLine(u8g2, x, y - boxHeight + 3, x, y - 1);
+}