Add base gnome extensions

gnome/.local/share/extensions/appindicatorsupport@rgcjonas.gmail.com/pixmapsUtils.js

@@ -0,0 +1,68 @@
+// This file is part of the AppIndicator/KStatusNotifierItem GNOME Shell extension
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+export function argbToRgba(src) {
+    const dest = new Uint8Array(src.length);
+
+    for (let j = 0; j < src.length; j += 4) {
+        const srcAlpha = src[j];
+
+        dest[j] = src[j + 1]; /* red */
+        dest[j + 1] = src[j + 2]; /* green */
+        dest[j + 2] = src[j + 3]; /* blue */
+        dest[j + 3] = srcAlpha; /* alpha */
+    }
+
+    return dest;
+}
+
+export function getBestPixmap(pixmapsVariant, preferredSize) {
+    if (!pixmapsVariant)
+        throw new TypeError('null pixmapsVariant');
+
+    const pixmapsVariantsArray = new Array(pixmapsVariant.n_children());
+    if (!pixmapsVariantsArray.length)
+        throw TypeError('Empty Icon found');
+
+    for (let i = 0; i < pixmapsVariantsArray.length; ++i)
+        pixmapsVariantsArray[i] = pixmapsVariant.get_child_value(i);
+
+    const pixmapsSizedArray = pixmapsVariantsArray.map((pixmapVariant, index) => ({
+        width: pixmapVariant.get_child_value(0).unpack(),
+        height: pixmapVariant.get_child_value(1).unpack(),
+        index,
+    }));
+
+    const sortedIconPixmapArray = pixmapsSizedArray.sort(
+        ({width: widthA, height: heightA}, {width: widthB, height: heightB}) => {
+            const areaA = widthA * heightA;
+            const areaB = widthB * heightB;
+
+            return areaA - areaB;
+        });
+
+    // we prefer any pixmap that is equal or bigger than our requested size
+    const qualifiedIconPixmapArray = sortedIconPixmapArray.filter(({width, height}) =>
+        width >= preferredSize && height >= preferredSize);
+
+    const {width, height, index} = qualifiedIconPixmapArray.length > 0
+        ? qualifiedIconPixmapArray[0] : sortedIconPixmapArray.pop();
+
+    const pixmapVariant = pixmapsVariantsArray[index].get_child_value(2);
+    const rowStride = width * 4; // hopefully this is correct
+
+    return {pixmapVariant, width, height, rowStride};
+}