App Android: tambah ikon launcher (hijau zamrud, grafik putih, badge Rp)

scripts/gen_icon.py

@@ -0,0 +1,86 @@
+#!/usr/bin/env python3
+"""Generate app icon for Saat Invest (1024x1024, anti-aliased 4x supersample).
+Desain: bg hijau zamrud gradient, garis grafik naik putih tebal, titik akhir,
+badge 'Rp' kecil. Simpan ke flutter/assets/icon/app_icon.png."""
+import math
+from PIL import Image, ImageDraw, ImageFont
+
+SS = 4          # supersample factor
+SIZE = 1024
+W = H = SIZE * SS
+
+# --- background gradient (emerald) ---
+top = (0x16, 0x8a, 0x63)   # lebih terang
+bot = (0x07, 0x53, 0x3a)   # lebih gelap
+img = Image.new('RGB', (W, H))
+px = img.load()
+for y in range(H):
+    t = y / (H - 1)
+    r = int(top[0] + (bot[0] - top[0]) * t)
+    g = int(top[1] + (bot[1] - top[1]) * t)
+    b = int(top[2] + (bot[2] - top[2]) * t)
+    for x in range(W):
+        px[x, y] = (r, g, b)
+
+d = ImageDraw.Draw(img)
+WHITE = (255, 255, 255, 255)
+SOFT = (255, 255, 255, 128)
+
+def pt(x, y):
+    """convert normalized (0..1) to supersampled px coords."""
+    return (x * W, y * H)
+
+# --- line chart (naik) ---
+# area chart di tengah (safe zone); baseline 0.78 -> puncak 0.34
+line_pts = [
+    (0.18, 0.72),
+    (0.36, 0.58),
+    (0.52, 0.62),
+    (0.68, 0.46),
+    (0.82, 0.34),
+]
+pts_px = [pt(x, y) for x, y in line_pts]
+
+# stroke tebal dengan join bulat
+lw = int(0.078 * W)
+d.line(pts_px, fill=WHITE, width=lw, joint='curve')
+
+# titik pada tiap vertex (bulatan kecil)
+r = int(0.042 * W)
+for (x, y) in pts_px:
+    d.ellipse([x - r, y - r, x + r, y + r], fill=WHITE)
+
+# area di bawah garis (fill lembut)
+base_y = 0.80 * H
+poly = [(pts_px[0][0], base_y)] + list(pts_px) + [(pts_px[-1][0], base_y)]
+overlay = Image.new('RGBA', (W, H), (0, 0, 0, 0))
+od = ImageDraw.Draw(overlay)
+od.polygon(poly, fill=(255, 255, 255, 45))
+img = Image.alpha_composite(img.convert('RGBA'), overlay)
+d = ImageDraw.Draw(img)
+
+# --- badge 'Rp' ---
+# posisikan di kiri-atas dari ujung grafik, tetap dalam safe zone
+font_path = '/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf'
+fsize = int(0.105 * W)
+f = ImageFont.truetype(font_path, fsize)
+text = 'Rp'
+bbox = d.textbbox((0, 0), text, font=f)
+tw = bbox[2] - bbox[0]
+th = bbox[3] - bbox[1]
+# badge bulat: di atas segmen terakhir, kiri dari titik ujung
+bcx = pts_px[-2][0] * 0.92 + pts_px[-1][0] * 0.08 - 0.10 * W
+bcy = pts_px[-2][1] * 0.5 + pts_px[-1][1] * 0.5 - 0.20 * H
+br = int(0.105 * W)
+d.ellipse([bcx - br, bcy - br, bcx + br, bcy + br], fill=(255, 255, 255, 240))
+# teks Rp hijau tua di badge
+d.text((bcx - tw / 2 - bbox[0], bcy - th / 2 - bbox[1]), text,
+       font=f, fill=(0x07, 0x53, 0x3a, 255))
+
+# --- downscale to 1024 (Lanczos) ---
+out = img.resize((SIZE, SIZE), Image.Resampling.LANCZOS).convert('RGB')
+
+import os
+os.makedirs('flutter/assets/icon', exist_ok=True)
+out.save('flutter/assets/icon/app_icon.png')
+print('saved flutter/assets/icon/app_icon.png', out.size)