Initial commit

src/icons/icons.h

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+#pragma once
+#include <M5Stack.h>
+#include "theme.h"
+
+// Design note: instead of storing large RGB565 bitmap arrays (which would
+// bloat flash usage for a first version), icons are drawn procedurally with
+// M5Stack's canvas primitives (circles, arcs, lines). This keeps the binary
+// small while still giving a colorful, modern look. If you later want true
+// pixel-art bitmaps, replace the bodies of these functions with
+// M5.Lcd.drawBitmap(...) calls against RGB565 arrays generated from PNGs.
+
+namespace Icons {
+
+// Draws a sun icon centered at (cx, cy) with given radius
+inline void drawSun(int cx, int cy, int r) {
+    M5.Lcd.fillCircle(cx, cy, r, Theme::ACCENT_SUN);
+    for (int i = 0; i < 8; i++) {
+        float angle = i * (PI / 4.0);
+        int x1 = cx + cos(angle) * (r + 4);
+        int y1 = cy + sin(angle) * (r + 4);
+        int x2 = cx + cos(angle) * (r + 10);
+        int y2 = cy + sin(angle) * (r + 10);
+        M5.Lcd.drawLine(x1, y1, x2, y2, Theme::ACCENT_SUN);
+    }
+}
+
+// Draws a moon icon (crescent) centered at (cx, cy)
+inline void drawMoon(int cx, int cy, int r) {
+    M5.Lcd.fillCircle(cx, cy, r, Theme::TEXT_DIM);
+    M5.Lcd.fillCircle(cx + r / 2, cy - r / 3, r, Theme::BG);
+}
+
+// Draws a cloud icon centered at (cx, cy)
+inline void drawCloud(int cx, int cy, int scale) {
+    M5.Lcd.fillCircle(cx - scale, cy, scale, Theme::TEXT_DIM);
+    M5.Lcd.fillCircle(cx + scale, cy, scale, Theme::TEXT_DIM);
+    M5.Lcd.fillCircle(cx, cy - scale / 2, scale + 2, Theme::TEXT_DIM);
+    M5.Lcd.fillRect(cx - scale, cy, scale * 2, scale, Theme::TEXT_DIM);
+}
+
+// Draws rain drops below a given y position
+inline void drawRainDrops(int cx, int cy, int count = 3) {
+    for (int i = 0; i < count; i++) {
+        int x = cx - (count - 1) * 5 + i * 10;
+        M5.Lcd.drawLine(x, cy, x - 3, cy + 8, Theme::ACCENT_RAIN);
+    }
+}
+
+// Combined weather icon based on the API "symbol" field.
+// symbol examples: "mo____" (clear/moon), "mb____" (cloudy/moon),
+// "wb____" (cloudy/day). First char roughly encodes day(w)/night(m),
+// second char encodes condition (o=clear, b=cloudy, r=rain, etc).
+inline void drawWeatherIcon(const String &symbol, int cx, int cy, int r = 20) {
+    bool isNight = symbol.length() > 0 && symbol.charAt(0) == 'm';
+    char condition = symbol.length() > 1 ? symbol.charAt(1) : 'o';
+
+    switch (condition) {
+        case 'o': // clear
+            if (isNight) drawMoon(cx, cy, r);
+            else drawSun(cx, cy, r);
+            break;
+        case 'b': // cloudy
+            drawCloud(cx, cy, r * 2 / 3);
+            break;
+        case 'r': // rain
+            drawCloud(cx, cy - 5, r * 2 / 3);
+            drawRainDrops(cx, cy + r / 2, 3);
+            break;
+        default:
+            drawCloud(cx, cy, r * 2 / 3);
+            break;
+    }
+}
+
+// Small rain-warning banner icon (drop with exclamation-ish accent)
+inline void drawRainWarning(int cx, int cy) {
+    M5.Lcd.fillTriangle(cx, cy - 8, cx - 6, cy + 6, cx + 6, cy + 6, Theme::ACCENT_RAIN);
+    M5.Lcd.fillCircle(cx, cy + 2, 2, Theme::BG);
+}
+
+// Simple "U" badge for U-Bahn
+inline void drawUBahnBadge(int x, int y, int w, int h) {
+    M5.Lcd.fillRoundRect(x, y, w, h, 4, Theme::ACCENT_UBAHN);
+    M5.Lcd.setTextColor(Theme::TEXT, Theme::ACCENT_UBAHN);
+    M5.Lcd.setCursor(x + w / 2 - 4, y + h / 2 - 4);
+    M5.Lcd.print("U");
+}
+
+// Simple "S" badge for S-Bahn
+inline void drawSBahnBadge(int x, int y, int w, int h) {
+    M5.Lcd.fillRoundRect(x, y, w, h, 4, Theme::ACCENT_SBAHN);
+    M5.Lcd.setTextColor(Theme::TEXT, Theme::ACCENT_SBAHN);
+    M5.Lcd.setCursor(x + w / 2 - 4, y + h / 2 - 4);
+    M5.Lcd.print("S");
+}
+
+// Calendar icon: simple rectangle with a top bar and a page-marker dot
+inline void drawCalendarIcon(int cx, int cy, int size) {
+    int x = cx - size / 2;
+    int y = cy - size / 2;
+    M5.Lcd.drawRoundRect(x, y, size, size, 3, Theme::ACCENT_CALENDAR);
+    M5.Lcd.fillRect(x, y, size, size / 4, Theme::ACCENT_CALENDAR);
+    M5.Lcd.fillCircle(cx, cy + size / 6, 2, Theme::TEXT);
+}
+
+// Retry / error icon: circular arrow suggestion using arcs (approximated
+// with a broken circle) plus an exclamation mark for simplicity.
+inline void drawRetryIcon(int cx, int cy, int r) {
+    M5.Lcd.drawCircle(cx, cy, r, Theme::ACCENT_ERROR);
+    M5.Lcd.setTextColor(Theme::ACCENT_ERROR, Theme::BG);
+    M5.Lcd.setCursor(cx - 3, cy - 8);
+    M5.Lcd.print("!");
+}
+
+} // namespace Icons