mirror of
https://github.com/MarekZegare4/MeshCore-Solo.git
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95795a663c
On a 250px-tall portrait e-ink panel the menu previously showed only 3-4 items and required scrolling. render() now computes the maximum items that fit from display.height() and uses that instead of the hardcoded caller hint whenever the screen is taller. handleInput() uses the same _cap value so scroll tracking stays in sync. OLED (64px): fits 4 items — unchanged behaviour. Portrait e-ink (250px): fits up to 22 items (capped at PM_MAX_ITEMS=16), no scroll needed for typical context menus (4-6 items). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
#pragma once
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#include <helpers/ui/DisplayDriver.h>
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#include <Arduino.h>
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// Generic scrollable popup menu overlay.
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// Caller owns item string lifetimes — addItem() stores const char* pointers.
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// Navigation wraps around: up from first item goes to last, and vice versa.
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struct PopupMenu {
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static const int PM_MAX_ITEMS = 16;
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static const int PM_BX = 12;
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static const int PM_BY = 10;
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static const int PM_BW = 104;
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static const int PM_ITEM_H = 10;
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const char* _items[PM_MAX_ITEMS];
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int _count;
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int _sel;
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int _scroll;
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int _visible; // caller hint (min visible items)
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int _cap; // actual visible cap, updated each render()
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bool active;
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const char* _title;
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enum Result { NONE, SELECTED, CANCELLED };
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PopupMenu() : _count(0), _sel(0), _scroll(0), _visible(3), _cap(3), active(false), _title(nullptr) {}
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void begin(const char* title, int visible = 3) {
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_count = 0; _sel = 0; _scroll = 0;
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_visible = visible; _cap = visible; active = true; _title = title;
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}
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void addItem(const char* item) {
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if (_count < PM_MAX_ITEMS) _items[_count++] = item;
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}
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int render(DisplayDriver& display) {
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// On tall displays (portrait e-ink) show as many items as fit;
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// on small displays fall back to the caller-specified _visible cap.
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int max_by_height = (display.height() - PM_BY - 12) / PM_ITEM_H;
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if (max_by_height < 1) max_by_height = 1;
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_cap = (max_by_height > _visible) ? max_by_height : _visible;
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int vis = (_count < _cap) ? _count : _cap;
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int bh = 12 + vis * PM_ITEM_H;
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display.setColor(DisplayDriver::DARK);
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display.fillRect(PM_BX, PM_BY, PM_BW, bh);
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display.setColor(DisplayDriver::LIGHT);
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display.drawRect(PM_BX, PM_BY, PM_BW, bh);
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display.setCursor(PM_BX + 4, PM_BY + 1);
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display.print(_title);
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display.fillRect(PM_BX, PM_BY + 10, PM_BW, 1);
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if (_scroll > 0)
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{ display.setCursor(PM_BX + PM_BW - 7, PM_BY + 1); display.print("^"); }
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if (_scroll + vis < _count)
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{ display.setCursor(PM_BX + PM_BW - 7, PM_BY + 2 + vis * PM_ITEM_H); display.print("v"); }
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for (int i = 0; i < vis && (_scroll + i) < _count; i++) {
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int idx = _scroll + i;
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int py = PM_BY + 12 + i * PM_ITEM_H;
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if (idx == _sel) {
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display.setColor(DisplayDriver::LIGHT);
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display.fillRect(PM_BX + 1, py - 1, PM_BW - 2, PM_ITEM_H);
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display.setColor(DisplayDriver::DARK);
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} else {
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display.setColor(DisplayDriver::LIGHT);
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}
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display.setCursor(PM_BX + 4, py);
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display.print(_items[idx]);
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}
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display.setColor(DisplayDriver::LIGHT);
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return 50;
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}
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Result handleInput(char c) {
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if (_count == 0) { active = false; return CANCELLED; }
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if (c == KEY_UP) {
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_sel = (_sel > 0) ? _sel - 1 : _count - 1;
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if (_sel < _scroll) _scroll = _sel;
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else if (_sel == _count - 1 && _count > _cap) _scroll = _count - _cap;
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return NONE;
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}
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if (c == KEY_DOWN) {
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_sel = (_sel < _count - 1) ? _sel + 1 : 0;
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if (_sel >= _scroll + _cap) _scroll = _sel - _cap + 1;
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else if (_sel == 0) _scroll = 0;
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return NONE;
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}
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if (c == KEY_ENTER) { active = false; return SELECTED; }
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if (c == KEY_CANCEL || c == KEY_CONTEXT_MENU) { active = false; return CANCELLED; }
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return NONE;
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}
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int selectedIndex() const { return _sel; }
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};
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