Remove FindSDL2 find-module, use sdl2-config.cmake instead
This requires SDL >= 2.0.4.
Since <https://bugzilla.libsdl.org/show_bug.cgi?id=2464> was fixed in
SDL 2.0.4, SDL behaves as a CMake "config-file package", even if it was
not itself built using CMake: it installs a sdl2-config.cmake file to
${libdir}/cmake/SDL2, which tells CMake where to find SDL's headers and
library, analogous to a pkg-config .pc file.
As a result, we no longer need to copy/paste a "find-module package"
to be able to find a system copy of SDL >= 2.0.4 with find_package(SDL2).
Find-module packages are now discouraged by the CMake developers, in
favour of having upstream projects behave as config-file packages.
This results in a small API change: FindSDL2 used to set SDL2_INCLUDE_DIR
and SDL2_LIBRARY, but the standard behaviour for config-file packages is
to set <name>_INCLUDE_DIRS and <name>_LIBRARIES. Use the CONFIG keyword
to make sure we search in config-file package mode, and will not find a
FindSDL2.cmake in some other directory that implements the old interface.
In addition to deleting redundant code, this avoids some assumptions in
FindSDL2 about the layout of a SDL installation. The current libsdl2-dev
package in Debian breaks those assumptions; this is considered a bug
and will hopefully be fixed soon, but it illustrates how fragile these
assumptions can be. We can be more robust against different installation
layouts by relying on SDL's own CMake integration.
When linking to a copy of CMake in a non-standard location, users can
now set the SDL2_DIR or CMAKE_PREFIX_PATH environment variable to point
to it; previously, these users would have used the SDL2DIR environment
variable. This continues to be unnecessary if using matching system-wide
installations of CMake and SDL2, for example both from Debian.
#ifndef _FileEngine_h
#define _FileEngine_h
#include <private/qabstractfileengine_p.h>
#include <QDateTime>
#include "physfs.h"
class FileEngine : public QAbstractFileEngine
{
public:
FileEngine(const QString& filename);
virtual ~FileEngine();
virtual bool open(QIODevice::OpenMode openMode);
virtual bool close();
virtual bool flush();
virtual qint64 size() const;
virtual qint64 pos() const;
virtual bool setSize(qint64 size);
virtual bool seek(qint64 pos);
virtual bool isSequential() const;
virtual bool remove();
virtual bool mkdir(const QString &dirName, bool createParentDirectories) const;
virtual bool rmdir(const QString &dirName, bool recurseParentDirectories) const;
virtual bool caseSensitive() const;
virtual bool isRelativePath() const;
QAbstractFileEngineIterator *beginEntryList(QDir::Filters filters, const QStringList & filterNames);
virtual QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const;
virtual FileFlags fileFlags(FileFlags type=FileInfoAll) const;
virtual QString fileName(FileName file=DefaultName) const;
virtual QDateTime fileTime(FileTime time) const;
virtual void setFileName(const QString &file);
bool atEnd() const;
virtual qint64 read(char *data, qint64 maxlen);
virtual qint64 readLine(char *data, qint64 maxlen);
virtual qint64 write(const char *data, qint64 len);
bool isOpened() const;
QFile::FileError error() const;
QString errorString() const;
virtual bool supportsExtension(Extension extension) const;
private:
PHYSFS_file *m_handle;
qint64 m_size;
FileFlags m_flags;
QString m_fileName;
QDateTime m_date;
bool m_bufferSet;
bool m_readWrite;
};
class FileEngineHandler : public QAbstractFileEngineHandler
{
public:
FileEngineHandler(char * argv0);
~FileEngineHandler();
QAbstractFileEngine *create(const QString &filename) const;
static void mount(const QString & path);
static void mount(const QString & path, const QString & mountPoint);
static void setWriteDir(const QString & path);
static void mountPacks();
static QString errorStr();
// private:
static const QString scheme;
};
class FileEngineIterator : public QAbstractFileEngineIterator
{
public:
FileEngineIterator(QDir::Filters filters, const QStringList & nameFilters, const QStringList & entries);
bool hasNext() const;
QString next();
QString currentFileName() const;
private:
QStringList m_entries;
int m_index;
};
#endif