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