mirror of
https://github.com/Nexoniarz/YAPF.git
synced 2026-11-03 13:04:26 +00:00
d7f494a0c9
- yapf_encode() / yapf_free_buffer(): encode to memory; yapf_save uses it - yapf.c also compiles as C++ - `yapf compare`: size and decode speed of the original format vs YAPF, with a lossless check - bindings with tested examples: C++ (header-only), C# (P/Invoke), Rust (crate, builds the C code), Go (cgo), Java (FFM API, Java 22+), Zig (@cImport), LuaJIT (FFI), TypeScript types for the JS port; Python now encodes in memory - docs/LANGUAGES.md and examples/ with measured results - KDE Dolphin thumbnail plugin (KF6, CMake) - README: honest status for Photoshop / VS Code / Figma (not run in the apps yet) and macOS (cross-compiled only), platform table Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
// YAPF thumbnails for KDE Dolphin and other KIO file dialogs.
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// Copyright 2026 Nexoniarz — Apache License 2.0.
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#include <KIO/ThumbnailCreator>
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#include <KPluginFactory>
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#include <QImage>
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extern "C" {
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#include "yapf.h"
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}
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class YapfThumbnailCreator : public KIO::ThumbnailCreator
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{
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Q_OBJECT
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public:
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YapfThumbnailCreator(QObject *parent, const QVariantList &args)
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: KIO::ThumbnailCreator(parent, args)
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{
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}
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KIO::ThumbnailResult create(const KIO::ThumbnailRequest &request) override
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{
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const QByteArray path = request.url().toLocalFile().toLocal8Bit();
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yapf_image_t *img = yapf_load(path.constData());
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if (!img) {
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return KIO::ThumbnailResult::fail();
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}
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// Start from the smallest stored mip level that still covers the
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// requested size; Qt scales the rest.
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const QSize want = request.targetSize();
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int m = 0;
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while (m + 1 < img->mip_levels &&
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int(img->width >> (m + 1)) >= want.width() &&
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int(img->height >> (m + 1)) >= want.height()) {
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++m;
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}
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const int w = qMax(1, int(img->width >> m));
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const int h = qMax(1, int(img->height >> m));
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const uchar *px = img->mips[m];
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QImage image;
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switch (img->channels) {
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case 1:
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image = QImage(px, w, h, w, QImage::Format_Grayscale8).copy();
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break;
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case 2: { // gray + alpha → RGBA
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image = QImage(w, h, QImage::Format_RGBA8888);
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for (int y = 0; y < h; ++y) {
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const uchar *s = px + size_t(y) * w * 2;
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uchar *d = image.scanLine(y);
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for (int x = 0; x < w; ++x, s += 2, d += 4) {
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d[0] = d[1] = d[2] = s[0];
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d[3] = s[1];
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}
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}
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break;
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}
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case 3:
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image = QImage(px, w, h, w * 3, QImage::Format_RGB888).copy();
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break;
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default:
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image = QImage(px, w, h, w * 4,
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(img->flags & YAPF_FLAG_PREMULT_ALPHA) ? QImage::Format_RGBA8888_Premultiplied
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: QImage::Format_RGBA8888).copy();
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break;
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}
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yapf_free(img);
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if (image.width() > want.width() || image.height() > want.height()) {
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image = image.scaled(want, Qt::KeepAspectRatio, Qt::SmoothTransformation);
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}
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return KIO::ThumbnailResult::pass(image);
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}
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};
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K_PLUGIN_CLASS_WITH_JSON(YapfThumbnailCreator, "yapfthumbnail.json")
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#include "yapfthumbnail.moc"
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