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249 lines
7.3 KiB
249 lines
7.3 KiB
/* coded by Ketmar // Vampire Avalon (psyc://ketmar.no-ip.org/~Ketmar)
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* (c)DWTFYW
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*
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* This program is free software. It comes without any warranty, to
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* the extent permitted by applicable law. You can redistribute it
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* and/or modify it under the terms of the Do What The Fuck You Want
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* To Public License, Version 2, as published by Sam Hocevar. See
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* http://sam.zoy.org/wtfpl/COPYING for more details.
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*/
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#include <QDebug>
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//#include <QtCore>
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#include "xcrxcur.h"
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#include <QApplication>
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#include <QStringList>
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#include <QStyle>
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#include <QTextCodec>
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#include <QTextStream>
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#include <QX11Info>
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#include <X11/Xlib.h>
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#include <X11/Xcursor/Xcursor.h>
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#include <X11/extensions/Xfixes.h>
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/*
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static QImage autoCropImage (const QImage &image) {
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// Compute an autocrop rectangle for the image
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QRect r(image.rect().bottomRight(), image.rect().topLeft());
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const quint32 *pixels = reinterpret_cast<const quint32*>(image.bits());
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for (int y = 0; y < image.height(); y++) {
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for (int x = 0; x < image.width(); x++) {
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if (*(pixels++)) {
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if (x < r.left()) r.setLeft(x);
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if (x > r.right()) r.setRight(x);
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if (y < r.top()) r.setTop(y);
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if (y > r.bottom()) r.setBottom(y);
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}
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}
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}
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// Normalize the rectangle
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return image.copy(r.normalized());
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}
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*/
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inline static quint32 getDW (const void *data) {
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const quint8 *d = (const quint8 *)data;
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d += 3;
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quint32 res = 0;
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for (int f = 4; f > 0; f--, d--) {
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res <<= 8;
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res |= *d;
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}
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return res;
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}
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static quint32 baGetDW (QByteArray &ba, int &pos) {
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const uchar *d = (const uchar *)ba.constData();
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d += pos+3;
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pos += 4;
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quint32 res = 0;
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for (int f = 4; f > 0; f--, d--) {
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res <<= 8;
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res |= *d;
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}
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return res;
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}
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///////////////////////////////////////////////////////////////////////////////
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XCursorImageXCur::XCursorImageXCur (const QString &aName, const void *aImgData) : XCursorImage(aName) {
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parseImgData(aImgData);
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}
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XCursorImageXCur::~XCursorImageXCur () {
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}
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void XCursorImageXCur::parseImgData (const void *aImgData) {
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mIsValid = false;
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delete mImage; // It's fine to delete a null pointer
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mImage = 0;
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const quint32 *data = (const quint32 *)aImgData;
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if (getDW(data) != 36) return; // header size
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if (getDW(data+1) != 0xfffd0002L) return; // magic
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//if (getDW(data+2) != 1) return; // image subtype
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if (getDW(data+3) != 1) return; // version
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mCSize = getDW(data+2);
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data += 4;
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quint32 wdt = getDW(data++); // width
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quint32 hgt = getDW(data++); // height
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if (wdt > 0x7fff) return;
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if (hgt > 0x7fff) return;
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/*
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quint32 xhot = getDW(data++);
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quint32 yhot = getDW(data++);
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assert(xhot <= wdt);
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assert(yhot <= hgt);
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*/
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mXHot = *((const qint32 *)data); data++;
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mYHot = *((const qint32 *)data); data++;
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mDelay = getDW(data++); // milliseconds
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// got to pixels (ARGB)
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QImage img((const uchar *)data, wdt, hgt, QImage::Format_ARGB32_Premultiplied);
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mImage = new QImage(img.copy());
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mIsValid = true;
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}
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///////////////////////////////////////////////////////////////////////////////
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XCursorImagesXCur::XCursorImagesXCur (const QDir &aDir, const QString &aName) : XCursorImages(aName, aDir.path()) {
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parseCursorFile(aDir.path()+"/"+aName);
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}
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XCursorImagesXCur::XCursorImagesXCur (const QString &aFileName) : XCursorImages("", "") {
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QString name(aFileName);
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if (name.isEmpty() || name.endsWith('/')) return;
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int i = name.lastIndexOf('/');
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QString dir;
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if (i < 0) dir = "./"; else dir = name.left(i);
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name = name.mid(i+1);
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setName(name); setPath(dir);
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parseCursorFile(aFileName);
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}
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bool XCursorImagesXCur::parseCursorFile (const QString &fname) {
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//qDebug() << fname;
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qDeleteAll(mList);
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mList.clear();
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QFile fl(fname);
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if (!fl.open(QIODevice::ReadOnly)) return false; // shit!
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QByteArray ba(fl.readAll());
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fl.close();
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if (ba.size() < 4*4) return false; // shit!
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if (ba[0] != 'X' || ba[1] != 'c' || ba[2] != 'u' || ba[3] != 'r') return false; // shit!
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//FIXME: add more checks!
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int pos = 4;
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quint32 hdrSize = baGetDW(ba, pos);
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if (hdrSize < 16) return false; // invalid header size
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quint32 version = baGetDW(ba, pos);
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if (version != 65536) return false; // invalid version
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quint32 ntoc = baGetDW(ba, pos);
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if (!ntoc) return true; // nothing to parse
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if (ntoc >= 65536) return false; // idiot or what?
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quint32 tocEndOfs = hdrSize+(ntoc*(3*4));
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if (tocEndOfs > (quint32)ba.size()) return false; // out of data
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pos = hdrSize;
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// parse TOC
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int cnt = -1;
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bool wasTitle = false, wasAuthor = false, wasLic = false;
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bool wasMail = false, wasSite = false, wasDescr = false, wasIM = false;
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while (ntoc-- > 0) {
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cnt++;
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quint32 type = baGetDW(ba, pos);
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pos += 4; // skip the shit
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quint32 dataOfs = baGetDW(ba, pos);
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if (type == 0xfffd0001) {
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// text
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if (dataOfs < tocEndOfs || dataOfs > (quint32)ba.size()-20) continue; // invalid text
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// parse text
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int ipos = dataOfs;
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if (baGetDW(ba, ipos) != 20) continue; // invalid header size
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if (baGetDW(ba, ipos) != 0xfffd0001) continue; // invalid type
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quint32 subT = baGetDW(ba, ipos);
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if (baGetDW(ba, ipos) != 1) continue; // invalid version
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quint32 len = baGetDW(ba, ipos);
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// check for data presence
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if (ipos+len > (quint32)ba.size()) continue; // out of data
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QByteArray stBA(ba.mid(ipos, len));
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QString s(QString::fromUtf8(stBA));
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switch (subT) {
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case 1: // copyright (author)
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if (!wasAuthor) {
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wasAuthor = true;
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mAuthor = s;
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}
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break;
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case 2: // license
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if (!wasLic) {
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wasLic = true;
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mLicense = s;
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}
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break;
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case 3: // other (description)
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if (!wasDescr) {
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wasDescr = true;
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mDescr = s;
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}
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break;
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// my extensions
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case 4: // title
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if (!wasTitle) {
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wasTitle = true;
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mTitle = s;
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}
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break;
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case 5: // e-mail
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if (!wasMail) {
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wasMail = true;
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mEMail = s;
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}
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break;
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case 6: // site
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if (!wasSite) {
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wasSite = true;
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mSite = s;
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}
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break;
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case 7: // IM
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if (!wasIM) {
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wasIM = true;
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mIM = s;
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}
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break;
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}
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continue;
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}
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if (type != 0xfffd0002) continue; // not an image, skip this one
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// image
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// check
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if (dataOfs < tocEndOfs || dataOfs > (quint32)ba.size()-36) continue; // invalid image
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// parse image
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int ipos = dataOfs;
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if (baGetDW(ba, ipos) != 36) continue; // invalid image (header size)
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if (baGetDW(ba, ipos) != 0xfffd0002) continue; // invalid type
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ipos += 4; // skip the shit
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if (baGetDW(ba, ipos) != 1) continue; // invalid image (version)
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quint32 wdt = baGetDW(ba, ipos);
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quint32 hgt = baGetDW(ba, ipos);
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if (wdt > 0x7fff || hgt > 0x7fff) continue; // invalid sizes
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// check for data presence
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if ((ipos+3*4)+(wdt*hgt*4) > (quint32)ba.size()) continue; // out of data
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// load image
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const uchar *dta = (const uchar *)ba.constData();
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dta += dataOfs;
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XCursorImage *img = new XCursorImageXCur(mName+"_"+QString::number(cnt), dta);
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if (img->isValid()) mList << img; else delete img;
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}
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return true;
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}
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