added skinned cursors (patch by Erik Ölsar)

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@1338 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 99 insertions, 0 deletions

diff --git a/src/ui/cursorimage.cpp b/src/ui/cursorimage.cpp
new file mode 100644
index 000000000..aa51b172d
--- /dev/null
+++ b/src/ui/cursorimage.cpp
@@ -0,0 +1,99 @@
+
+#include <QCursor>
+#include <QString>
+#include <QPixmap>
+#include <QImage>
+#include <QByteArray>
+#include <QFile>
+#include <QBitmap>
+#include <QtDebug>
+#include "cursorimage.h"
+
+QCursor createCursor(QString path)
+{
+	if (path.isEmpty())
+		return QCursor();
+	
+	// read file headers
+	QFile curFile(path);
+	curFile.open(QIODevice::ReadOnly);
+	QDataStream curStream(&curFile);
+	curStream.setByteOrder(QDataStream::LittleEndian);
+	
+	struct {
+		quint16 zero;
+		quint16 type;
+		quint16 icons;
+	} header2;
+	curStream >> header2.zero >> header2.type >> header2.icons;
+
+	struct {
+		quint8 width;
+		quint8 height;
+		quint8 ncolours;
+		quint8 zero;
+		quint16 xhot;
+		quint16 yhot;
+		quint32 bytes;
+		quint32 dibOffset;
+	} directory2;
+	curStream >> directory2.width >> directory2.height >> directory2.ncolours >> directory2.zero >> directory2.xhot >> directory2.yhot >> directory2.bytes >> directory2.dibOffset;
+	
+	curFile.seek(directory2.dibOffset);
+	
+	// prepare a .bmp for delegating decoding to qt
+	struct {
+		unsigned char magic[2];
+		quint32 size;
+		quint32 zero;
+		quint32 rdataOffset;
+	} bmpHeader;
+	int bmpHeaderSize = (2+4+4+4);
+	struct {
+		quint32 hdrSize;
+		quint32 width;
+		quint32 height;
+		quint16 planes;
+		quint16 bpp;
+		quint32 compression;
+		quint32 dataSize;
+		quint32 unused1;
+		quint32 unused2;
+		quint32 unused3;
+		quint32 unused4;
+	} dibHeader;
+	int dibHeaderSize = (4+4+4+2+2+4+4+4+4+4+4);
+	
+	bmpHeader.magic[0] = 'B'; bmpHeader.magic[1] = 'M';
+	bmpHeader.zero = 0;
+	bmpHeader.size = bmpHeaderSize + directory2.bytes;
+	bmpHeader.rdataOffset = bmpHeaderSize + dibHeaderSize + directory2.ncolours * 4;
+	
+	curStream >> dibHeader.hdrSize >> dibHeader.width >> dibHeader.height >> dibHeader.planes >> dibHeader.bpp >> dibHeader.compression >> dibHeader.dataSize >> dibHeader.unused1 >> dibHeader.unused2 >> dibHeader.unused3 >> dibHeader.unused4;
+	dibHeader.height >>= 1;
+	
+	// the bmp bytes are in 'bmpData'
+	QByteArray bmpData;
+	QDataStream bmpStream(&bmpData, QIODevice::WriteOnly);
+	bmpStream.setByteOrder(QDataStream::LittleEndian);
+	bmpStream.writeRawData((char*) bmpHeader.magic, 2);
+	bmpStream << bmpHeader.size << bmpHeader.zero << bmpHeader.rdataOffset;
+	bmpStream << dibHeader.hdrSize << dibHeader.width << dibHeader.height << dibHeader.planes << dibHeader.bpp << dibHeader.compression << dibHeader.dataSize << dibHeader.unused1 << dibHeader.unused2 << dibHeader.unused3 << dibHeader.unused4;
+	bmpData.append(curFile.read(directory2.bytes - dibHeaderSize));
+	
+	// decode the image into 'pix'
+	int width = directory2.width;
+	int height = directory2.height;
+	QImage image;
+	image.loadFromData(bmpData);
+	//qDebug() << image.rect() << path;
+	QPixmap pix = QPixmap::fromImage(image);
+	
+	// now we need the mask (transparency)
+	QByteArray maskData = bmpData.right((width * height) / 8);
+	QImage maskImage = QBitmap::fromData(QSize(width, height), (const uchar*) maskData.constData(), QImage::Format_Mono).toImage().mirrored(FALSE, TRUE);
+	maskImage.invertPixels();
+	pix.setMask(QBitmap::fromImage(maskImage));
+	
+	return QCursor(pix, directory2.xhot, directory2.yhot);
+}