Struct qt_gui::QPictureFormatPlugin

#[repr(C)]
pub struct QPictureFormatPlugin { /* fields omitted */ }

The QPictureFormatPlugin class provides an abstract base for custom picture format plugins.

C++ class: QPictureFormatPlugin.

C++ documentation:

The QPictureFormatPlugin class provides an abstract base for custom picture format plugins.

The picture format plugin is a simple plugin interface that makes it easy to create custom picture formats that can be used transparently by applications.

Writing an picture format plugin is achieved by subclassing this base class, reimplementing the pure virtual functions loadPicture(), savePicture(), and installIOHandler(), and exporting the class with the Q_PLUGIN_METADATA() macro.

The json file containing the metadata should contain one entry with the list of picture formats supported by the plugin:

{ "Keys": [ "mypictureformat" ] }

Methods

impl QPictureFormatPlugin

pub unsafe fn install_io_handler(
    &mut self,
    format: impl CastInto<Ref<QString>>
) -> bool

Installs a QPictureIO picture I/O handler for the picture format format. Returns true on success.

Calls C++ function: pure virtual bool QPictureFormatPlugin::installIOHandler(const QString& format).

C++ documentation:

Installs a QPictureIO picture I/O handler for the picture format format. Returns true on success.

pub unsafe fn load_picture(
    &mut self,
    format: impl CastInto<Ref<QString>>,
    filename: impl CastInto<Ref<QString>>,
    pic: impl CastInto<MutPtr<QPicture>>
) -> bool

Loads the picture stored in the file called fileName, with the given format, into *picture. Returns true on success; otherwise returns false.

Calls C++ function: virtual bool QPictureFormatPlugin::loadPicture(const QString& format, const QString& filename, QPicture* pic).

C++ documentation:

Loads the picture stored in the file called fileName, with the given format, into *picture. Returns true on success; otherwise returns false.

See also savePicture().

pub unsafe fn meta_object(&self) -> Ptr<QMetaObject>

Calls C++ function: virtual const QMetaObject* QPictureFormatPlugin::metaObject() const.

pub unsafe fn qt_metacall(
    &mut self,
    arg1: Call,
    arg2: c_int,
    arg3: impl CastInto<MutPtr<*mut c_void>>
) -> c_int

Calls C++ function: virtual int QPictureFormatPlugin::qt_metacall(QMetaObject::Call arg1, int arg2, void** arg3).

pub unsafe fn qt_metacast(
    &mut self,
    arg1: impl CastInto<Ptr<c_char>>
) -> MutPtr<c_void>

Calls C++ function: virtual void* QPictureFormatPlugin::qt_metacast(const char* arg1).

pub unsafe fn save_picture(
    &mut self,
    format: impl CastInto<Ref<QString>>,
    filename: impl CastInto<Ref<QString>>,
    pic: impl CastInto<Ref<QPicture>>
) -> bool

Saves the given picture into the file called fileName, using the specified format. Returns true on success; otherwise returns false.

Calls C++ function: virtual bool QPictureFormatPlugin::savePicture(const QString& format, const QString& filename, const QPicture& pic).

C++ documentation:

Saves the given picture into the file called fileName, using the specified format. Returns true on success; otherwise returns false.

See also loadPicture().

pub unsafe fn static_meta_object() -> Ref<QMetaObject>

Returns a reference to the staticMetaObject field.

pub unsafe fn tr(
    s: impl CastInto<Ptr<c_char>>,
    c: impl CastInto<Ptr<c_char>>,
    n: c_int
) -> CppBox<QString>

Calls C++ function: static QString QPictureFormatPlugin::tr(const char* s, const char* c, int n).

pub unsafe fn tr_utf8(
    s: impl CastInto<Ptr<c_char>>,
    c: impl CastInto<Ptr<c_char>>,
    n: c_int
) -> CppBox<QString>

Calls C++ function: static QString QPictureFormatPlugin::trUtf8(const char* s, const char* c, int n).

Trait Implementations

impl CppDeletable for QPictureFormatPlugin

unsafe fn delete(&mut self)

Destroys the picture format plugin.

Calls C++ function: virtual [destructor] void QPictureFormatPlugin::~QPictureFormatPlugin().

C++ documentation:

Destroys the picture format plugin.

You never have to call this explicitly. Qt destroys a plugin automatically when it is no longer used.

impl Deref for QPictureFormatPlugin

type Target = QObject

The resulting type after dereferencing.

fn deref(&self) -> &QObject

Calls C++ function: QObject* static_cast<QObject*>(QPictureFormatPlugin* ptr).

impl DerefMut for QPictureFormatPlugin

fn deref_mut(&mut self) -> &mut QObject

Calls C++ function: QObject* static_cast<QObject*>(QPictureFormatPlugin* ptr).

impl DynamicCast<QPictureFormatPlugin> for QObject

unsafe fn dynamic_cast(ptr: Ptr<QObject>) -> Ptr<QPictureFormatPlugin>

Calls C++ function: QPictureFormatPlugin* dynamic_cast<QPictureFormatPlugin*>(QObject* ptr).

unsafe fn dynamic_cast_mut(ptr: MutPtr<QObject>) -> MutPtr<QPictureFormatPlugin>

Calls C++ function: QPictureFormatPlugin* dynamic_cast<QPictureFormatPlugin*>(QObject* ptr).

impl StaticDowncast<QPictureFormatPlugin> for QObject

unsafe fn static_downcast(ptr: Ptr<QObject>) -> Ptr<QPictureFormatPlugin>

Calls C++ function: QPictureFormatPlugin* static_cast<QPictureFormatPlugin*>(QObject* ptr).

unsafe fn static_downcast_mut(
    ptr: MutPtr<QObject>
) -> MutPtr<QPictureFormatPlugin>

Calls C++ function: QPictureFormatPlugin* static_cast<QPictureFormatPlugin*>(QObject* ptr).

impl StaticUpcast<QObject> for QPictureFormatPlugin

unsafe fn static_upcast(ptr: Ptr<QPictureFormatPlugin>) -> Ptr<QObject>

Calls C++ function: QObject* static_cast<QObject*>(QPictureFormatPlugin* ptr).

unsafe fn static_upcast_mut(
    ptr: MutPtr<QPictureFormatPlugin>
) -> MutPtr<QObject>

Calls C++ function: QObject* static_cast<QObject*>(QPictureFormatPlugin* ptr).