pub struct Clipboard<'a> { /* private fields */ }
Expand description
Notice these docs are heavy WIP and not very relevent yet
The clipboard offers a simple mechanism to copy and paste data between applications.
QClipboard supports the same data types that QDrag does, and uses similar mechanisms. For advanced clipboard usage read Drag and Drop
There is a single QClipboard object in an application, accessible as QGuiApplication::clipboard().
Example:
QClipboard features some convenience functions to access common data types: setText() allows the exchange of Unicode text and setPixmap() and setImage() allows the exchange of QPixmaps and QImages between applications. The setMimeData() function is the ultimate in flexibility: it allows you to add any QMimeData into the clipboard. There are corresponding getters for each of these, e.g. text(), image() and pixmap(). You can clear the clipboard by calling clear().
A typical example of the use of these functions follows:
Notes for X11 Users
- The X11 Window System has the concept of a separate selection and clipboard. When text is selected, it is immediately available as the global mouse selection. The global mouse selection may later be copied to the clipboard. By convention, the middle mouse button is used to paste the global mouse selection.
- X11 also has the concept of ownership; if you change the selection within a window, X11 will only notify the owner and the previous owner of the change, i.e. it will not notify all applications that the selection or clipboard data changed.
- Lastly, the X11 clipboard is event driven, i.e. the clipboard will not function properly if the event loop is not running. Similarly, it is recommended that the contents of the clipboard are stored or retrieved in direct response to user-input events, e.g. mouse button or key presses and releases. You should not store or retrieve the clipboard contents in response to timer or non-user-input events.
- Since there is no standard way to copy and paste files between applications on X11, various MIME types and conventions are currently in use. For instance, Nautilus expects files to be supplied with a
x-special/gnome-copied-files
MIME type with data beginning with the cut/copy action, a newline character, and the URL of the file.
Notes for \macos Users
MacOS supports a separate find buffer that holds the current search string in Find operations. This find clipboard can be accessed by specifying the FindBuffer mode.
Notes for Windows and \macos Users
- Windows and MacOS do not support the global mouse selection; they only supports the global clipboard, i.e. they only add text to the clipboard when an explicit copy or cut is made.
- Windows and MacOS does not have the concept of ownership; the clipboard is a fully global resource so all applications are notified of changes.
Notes for Universal Windows Platform Users
- The Universal Windows Platform only allows to query the clipboard in case the application is active and an application window has focus. Accessing the clipboard data when in background will fail due to access denial.
See also: GuiApplication
Licence
The documentation is an adoption of the original Qt Documentation and provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation.
Implementations
sourceimpl<'a> Clipboard<'a>
impl<'a> Clipboard<'a>
sourcepub fn clear(&self, mode: Mode) -> &Self
pub fn clear(&self, mode: Mode) -> &Self
Clear the clipboard contents.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, this function clears the global clipboard contents. If mode is QClipboard::Selection, this function clears the global mouse selection contents. If mode is QClipboard::FindBuffer, this function clears the search string buffer.
See also: [Clipboard::mode()
]
[supports_selection()
]
sourcepub fn supports_selection(&self) -> bool
pub fn supports_selection(&self) -> bool
Returns true
if the clipboard supports mouse selection; otherwise
returns false.
sourcepub fn supports_find_buffer(&self) -> bool
pub fn supports_find_buffer(&self) -> bool
Returns true
if the clipboard supports a separate search buffer; otherwise
returns false.
sourcepub fn owns_selection(&self) -> bool
pub fn owns_selection(&self) -> bool
Returns true
if this clipboard object owns the mouse selection
data; otherwise returns false.
sourcepub fn owns_clipboard(&self) -> bool
pub fn owns_clipboard(&self) -> bool
Returns true
if this clipboard object owns the clipboard data;
otherwise returns false.
sourcepub fn owns_find_buffer(&self) -> bool
pub fn owns_find_buffer(&self) -> bool
Returns true
if this clipboard object owns the find buffer data;
otherwise returns false.
sourcepub fn text(&self, mode: Mode) -> String
pub fn text(&self, mode: Mode) -> String
Overloads Returns the clipboard text in subtype subtype, or an empty string if the clipboard does not contain any text. If subtype is null, any subtype is acceptable, and subtype is set to the chosen subtype.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is retrieved from the global clipboard. If mode is QClipboard::Selection, the text is retrieved from the global mouse selection.
Common values for subtype are and .
Note that calling this function repeatedly, for instance from a
key event handler, may be slow. In such cases, you should use the
dataChanged()
signal instead.
See also: [set_text()
]
[mime_data()
]
Returns the clipboard text as plain text, or an empty string if the clipboard does not contain any text.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is retrieved from the global clipboard. If mode is QClipboard::Selection, the text is retrieved from the global mouse selection. If mode is QClipboard::FindBuffer, the text is retrieved from the search string buffer.
See also: [set_text()
]
[mime_data()
]
sourcepub fn set_text(&self, arg0: &str, mode: Mode) -> &Self
pub fn set_text(&self, arg0: &str, mode: Mode) -> &Self
Overloads Returns the clipboard text in subtype subtype, or an empty string if the clipboard does not contain any text. If subtype is null, any subtype is acceptable, and subtype is set to the chosen subtype.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is retrieved from the global clipboard. If mode is QClipboard::Selection, the text is retrieved from the global mouse selection.
Common values for subtype are and .
Note that calling this function repeatedly, for instance from a
key event handler, may be slow. In such cases, you should use the
dataChanged()
signal instead.
See also: [set_text()
]
[mime_data()
]
Returns the clipboard text as plain text, or an empty string if the clipboard does not contain any text.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is retrieved from the global clipboard. If mode is QClipboard::Selection, the text is retrieved from the global mouse selection. If mode is QClipboard::FindBuffer, the text is retrieved from the search string buffer.
See also: [set_text()
]
[mime_data()
]
Copies text into the clipboard as plain text.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is stored in the global clipboard. If mode is QClipboard::Selection, the text is stored in the global mouse selection. If mode is QClipboard::FindBuffer, the text is stored in the search string buffer.
See also: [text()
]
[set_mime_data()
]
sourcepub fn mime_data(&self, mode: Mode) -> Option<MimeData<'_>>
pub fn mime_data(&self, mode: Mode) -> Option<MimeData<'_>>
Returns a pointer to a QMimeData representation of the current clipboard data (can be NULL if the given mode is not supported by the platform).
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the data is retrieved from the global clipboard. If mode is QClipboard::Selection, the data is retrieved from the global mouse selection. If mode is QClipboard::FindBuffer, the data is retrieved from the search string buffer.
The text(), image(), and pixmap() functions are simpler wrappers for retrieving text, image, and pixmap data.
Note: The pointer returned might become invalidated when the contents of the clipboard changes; either by calling one of the setter functions or externally by the system clipboard changing.
See also: [set_mime_data()
]
sourcepub fn set_mime_data<M: MimeDataTrait<'a>>(&self, data: &M, mode: Mode) -> &Self
pub fn set_mime_data<M: MimeDataTrait<'a>>(&self, data: &M, mode: Mode) -> &Self
Sets the clipboard data to src. Ownership of the data is transferred to the clipboard. If you want to remove the data either call clear() or call setMimeData() again with new data.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the data is stored in the global clipboard. If mode is QClipboard::Selection, the data is stored in the global mouse selection. If mode is QClipboard::FindBuffer, the data is stored in the search string buffer.
The setText(), setImage() and setPixmap() functions are simpler wrappers for setting text, image and pixmap data respectively.
See also: [mime_data()
]
sourcepub fn image(&self, mode: Mode) -> Image<'_>
pub fn image(&self, mode: Mode) -> Image<'_>
Returns the clipboard image, or returns a null image if the clipboard does not contain an image or if it contains an image in an unsupported image format.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the image is retrieved from the global clipboard. If mode is QClipboard::Selection, the image is retrieved from the global mouse selection.
See also: [set_image()
]
[pixmap()
]
[mime_data()
]
Image::is_null
sourcepub fn pixmap(&self, mode: Mode) -> Pixmap<'_>
pub fn pixmap(&self, mode: Mode) -> Pixmap<'_>
Returns the clipboard pixmap, or null if the clipboard does not contain a pixmap. Note that this can lose information. For example, if the image is 24-bit and the display is 8-bit, the result is converted to 8 bits, and if the image has an alpha channel, the result just has a mask.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the pixmap is retrieved from the global clipboard. If mode is QClipboard::Selection, the pixmap is retrieved from the global mouse selection.
See also: [set_pixmap()
]
[image()
]
[mime_data()
]
Pixmap::convert_from_image
sourcepub fn set_image<I: ImageTrait<'a>>(&self, arg0: &I, mode: Mode) -> &Self
pub fn set_image<I: ImageTrait<'a>>(&self, arg0: &I, mode: Mode) -> &Self
Copies the image into the clipboard.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the image is stored in the global clipboard. If mode is QClipboard::Selection, the data is stored in the global mouse selection.
This is shorthand for:
See also: [image()
]
[set_pixmap()
]
[set_mime_data()
]
sourcepub fn set_pixmap<P: PixmapTrait<'a>>(&self, arg0: &P, mode: Mode) -> &Self
pub fn set_pixmap<P: PixmapTrait<'a>>(&self, arg0: &P, mode: Mode) -> &Self
Copies pixmap into the clipboard. Note that this is slower than setImage() because it needs to convert the QPixmap to a QImage first.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the pixmap is stored in the global clipboard. If mode is QClipboard::Selection, the pixmap is stored in the global mouse selection.
See also: [pixmap()
]
[set_image()
]
[set_mime_data()
]