Initial commit

tools/make_assets.py

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+"""Import the user's Arkham City artwork and build the app icon from it.
+
+    python tools/make_assets.py ["C:/Users/<you>/Downloads/Arkham City"]
+
+tools/build_app.py runs this by itself when app/assets is missing or older than this script (from the default
+folder or --art FOLDER).
+
+Input folder: bac_logo_full.png (logo with transparent background) and wallpaper.jpg.
+Output (app/assets/, git-ignored because it is Warner Bros. artwork):
+  wallpaper.jpg   background of the filter panel
+  app_icon.png    256 px icon: the logo bat in black over a red audio waveform, on a white rounded tile
+  app_icon.ico    Windows icon (16-256 px)
+"""
+import math
+import os
+import shutil
+import struct
+import sys
+
+from PySide6.QtCore import QBuffer, QByteArray, QIODevice, QPointF, QRect, QRectF, Qt
+from PySide6.QtGui import QColor, QGuiApplication, QImage, QLinearGradient, QPainter
+
+ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+OUT = os.path.join(ROOT, "app", "assets")
+DEFAULT_SRC = os.path.join(os.path.expanduser("~"), "Downloads", "Arkham City")
+RED, RED_HI = "#b0242c", "#d8434b"          # the app accent
+
+
+def crop_bat(logo):
+    """The bat is the opaque block above the first fully transparent band (the text sits below it)."""
+    logo = logo.convertToFormat(QImage.Format.Format_ARGB32)
+    w, h = logo.width(), logo.height()
+    opaque = [any(logo.pixelColor(x, y).alpha() > 40 for x in range(0, w, 2)) for y in range(h)]
+    top = opaque.index(True)
+    bottom = top
+    while bottom < h and (opaque[bottom] or any(opaque[bottom:bottom + 12])):
+        bottom += 1
+    cols = [x for x in range(w) if any(logo.pixelColor(x, y).alpha() > 40 for y in range(top, bottom, 2))]
+    return logo.copy(QRect(cols[0], top, cols[-1] - cols[0] + 1, bottom - top))
+
+
+def silhouette(bat, w, color):
+    """The bat's outline filled with one flat colour (drops the stone texture and the lettering)."""
+    h = round(w * bat.height() / bat.width())
+    img = bat.scaled(w, h, Qt.AspectRatioMode.IgnoreAspectRatio, Qt.TransformationMode.SmoothTransformation)
+    p = QPainter(img)
+    p.setCompositionMode(QPainter.CompositionMode.CompositionMode_SourceIn)
+    p.fillRect(img.rect(), QColor(color))
+    p.end()
+    return img
+
+
+def draw_icon(bat, s):
+    """White rounded tile, a red audio waveform (rounded bars) across it, the logo bat in black on top."""
+    img = QImage(s, s, QImage.Format.Format_ARGB32)
+    img.fill(Qt.GlobalColor.transparent)
+    p = QPainter(img)
+    p.setRenderHint(QPainter.RenderHint.Antialiasing)
+    p.setRenderHint(QPainter.RenderHint.SmoothPixmapTransform)
+    small = s <= 24
+    m = s * 0.04
+    bg = QLinearGradient(0, 0, 0, s)
+    bg.setColorAt(0, QColor("#ffffff"))
+    bg.setColorAt(1, QColor("#ececec"))
+    p.setPen(Qt.PenStyle.NoPen)
+    p.setBrush(bg)
+    p.drawRoundedRect(QRectF(m, m, s - 2 * m, s - 2 * m), s * 0.22, s * 0.22)
+    # waveform: symmetric bars, tallest in the middle so they rise above and below the bat
+    cy = s / 2
+    n = 5 if small else 9
+    x0, x1 = s * 0.12, s * 0.88
+    step = (x1 - x0) / n
+    bar = step * 0.68
+    for i in range(n):
+        j = min(i, n - 1 - i)                               # mirror
+        t = (i + 0.5) / n
+        env = math.exp(-((t - 0.5) / 0.34) ** 2)
+        h = s * (0.10 + 0.32 * env * (0.65 + 0.35 * abs(math.sin(j * 2.3 + 0.7))))
+        g = QLinearGradient(0, cy - h, 0, cy + h)
+        g.setColorAt(0, QColor(RED_HI))
+        g.setColorAt(0.5, QColor(RED))
+        g.setColorAt(1, QColor(RED_HI))
+        p.setBrush(g)
+        p.drawRoundedRect(QRectF(x0 + i * step + (step - bar) / 2, cy - h, bar, 2 * h), bar / 2, bar / 2)
+    # the logo bat, flat black
+    sil = silhouette(bat, max(1, round(s * (0.84 if small else 0.78))), "#0d0d0d")
+    p.drawImage(QPointF((s - sil.width()) / 2, cy - sil.height() / 2), sil)
+    p.end()
+    return img
+
+
+def write_ico(images, path):
+    """Multi-size .ico with PNG-compressed entries (Windows Vista+)."""
+    blobs = []
+    for im in images:
+        ba = QByteArray()
+        buf = QBuffer(ba)
+        buf.open(QIODevice.OpenModeFlag.WriteOnly)
+        im.save(buf, "PNG")
+        blobs.append((im.width(), bytes(ba)))
+    out = struct.pack("<HHH", 0, 1, len(blobs))
+    off = 6 + 16 * len(blobs)
+    for w, b in blobs:
+        out += struct.pack("<BBBBHHII", w % 256, w % 256, 0, 0, 1, 32, len(b), off)
+        off += len(b)
+    out += b"".join(b for _, b in blobs)
+    open(path, "wb").write(out)
+
+
+def main(src=None):
+    src = src or (sys.argv[1] if len(sys.argv) > 1 else DEFAULT_SRC)
+    global _APP
+    _APP = QGuiApplication.instance() or QGuiApplication(sys.argv[:1])  # needed for QPainter
+    os.makedirs(OUT, exist_ok=True)
+    logo = QImage(os.path.join(src, "bac_logo_full.png"))
+    if logo.isNull():
+        raise SystemExit("bac_logo_full.png not found in %s" % src)
+    bat = crop_bat(logo)
+    shutil.copy(os.path.join(src, "wallpaper.jpg"), os.path.join(OUT, "wallpaper.jpg"))
+    icon = draw_icon(bat, 256)
+    icon.save(os.path.join(OUT, "app_icon.png"))
+    write_ico([draw_icon(bat, n) for n in (16, 24, 32, 48, 64, 128, 256)], os.path.join(OUT, "app_icon.ico"))
+    print("assets written to", OUT)
+
+
+if __name__ == "__main__":
+    main()