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230 lines
5.6 KiB
HTML
230 lines
5.6 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<title>Function List</title>
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<meta charset="utf-8">
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</head>
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<body>
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<h2><pre>LQML</pre></h2>
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<pre>
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<b>children (item/name)</b>
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Like QML function 'children'.
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<b>define-qt-wrappers (qt-library &rest what)</b>
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Defines Lisp methods for all Qt methods/signals/slots of given library,
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previously loaded with QLOAD-C++.
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(define-qt-wrappers *c++*) ; generate wrappers
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(define-qt-wrappers *c++* :methods) ; Qt methods only (no slots/signals)
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(my-qt-function *c++* x y) ; call from Lisp
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<b>find-quick-item (object-name)</b>
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Finds the first QQuickItem matching OBJECT-NAME. Locally set *ROOT-ITEM* if
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you want to find items inside a specific item, like in a QML Repeater. See
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also note in sources.
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<b>pixel-ratio ()</b>
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Returns the effective device pixel ratio.
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<b>q! (method-name item/name &rest arguments)</b>
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For calling methods of QML items.
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(q! |requestPaint| *canvas*)
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<b>q< (property-name item/name)</b>
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Convenience macro for QML-GET. Use symbol instead of string name.
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(q< |text| *label*)
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(q< |font.pixelSize| *label*)
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<b>q> (property-name item/name value)</b>
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Convenience macro for QML-SET. Use symbol instead of string name.
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(q> |text| *label* "greetings!")
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<b>q>* (property-name item/name value)</b>
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Convenience macro for QML-SET-ALL. Use symbol instead of string name. Sets
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given property of all items sharing the same 'objectName'.
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<b>qapropos (name &optional qt-object/name)</b>
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Searches properties, methods, signals, slots for NAME in QObject
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(e.g. QQuickItem) passed as second argument. QQuickItems can also be passed
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by their 'objectName'.
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(qapropos nil *canvas*)
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(qapropos "color")
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<b>qapropos* (name &optional qt-object/name)</b>
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Similar to QAPROPOS, returning the results as nested list.
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<b>qchildren (item/name)</b>
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Like QML function children().
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<b>qescape (string)</b>
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Calls QString::toHtmlEscaped().
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<b>qexec (&optional milliseconds)</b>
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Calls QCoreApplication::exec(). Optionally pass the time in milliseconds
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after which QEventLoop::exit() will be called. See also QSLEEP.
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<b>qexit ()</b>
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Calls QEventLoop::exit(), in order to exit event processing after a call
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QEXEC with a timeout. Returns T if the event loop has effectively been
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exited.
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<b>qfind-child (qt-object name)</b>
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Calls QObject::findChild<QObject*>().
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<b>qfrom-utf8 (byte-array)</b>
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Returns the BYTE-ARRAY (vector of octets) converted using
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QString::fromUtf8().
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<b>qget (qt-object name)</b>
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Gets a Qt property. Enumerator values are returned as integer values.
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Returns T as second return value for successful calls.
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(qget *quick-view* |width|)
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<b>qjs (method-name item/name &rest arguments)</b>
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Fast and convenient way to call JS functions defined in QML. You may pass
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up to 10 arguments of the following types:
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T, NIL, INTEGER, FLOAT, STRING, VECTOR of octets, and (nested) lists of
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mentioned arguments.
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N.B: Does not work with JS default arguments.
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(qjs |drawLine| *canvas* x1 y1 x2 y2))
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<b>qlater (function)</b>
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Calls FUNCTION as soon as the Qt event loop is idle.
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<b>qload-c++ (library-name &optional unload)</b>
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Loads a custom Qt/C++ plugin (see 'cpp-lib' in sources). The LIBRARY-NAME
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has to be passed as path to the plugin, without file ending. This offers
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a simple way to extend your application with your own Qt/C++ functions.
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The plugin will be reloaded (if supported by the OS) every time you call
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this function. If the UNLOAD argument is not NIL, the plugin will be
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unloaded (if supported by the OS).
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N.B: This works only for Qt functions with the following signature:
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"QVariant foo(QVariant, ...)" ; max 10 QVariant arguments
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Since a QVariant can also be of type QVariantList, this is a perfect fit
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for (nested) Lisp lists.
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(defparameter *c++* (qload-c++ "my-lib"))
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(qapropos nil *c++*) ; documentation
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(define-qt-wrappers *c++*) ; Lisp wrapper functions
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<b>qlog (arg1 &rest args)</b>
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For log messages on android.
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(qlog 12)
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(qlog "width" 10 "height" 20)
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(qlog "x ~A y ~A" x y)
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<b>qobject-name (qt-object)</b>
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Returns the QObject::objectName() of passed QT-OBJECT.
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<b>qprocess-events ()</b>
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Calls QCoreApplication::processEvents().
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<b>qquit (&optional (exit-status 0) (kill-all-threads t))</b>
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<b>qq</b>
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Terminates LQML. Use this function instead of ECL (ext:quit) to quit
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gracefully. Negative values for EXIT-STATUS will call C abort() instead of
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normal program exit.
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<b>qset (qt-object name1 value1 &optional name2 value2...)</b>
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Sets a Qt property. Enumerators have to be passed as integer values.
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Returns T as second return value for successful calls.
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(qset *quick-view* |x| 100 |y| 100)
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<b>qsingle-shot (milliseconds function)</b>
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A single shot timer similar to QTimer::singleShot().
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(qsingle-shot 1000 'one-second-later)
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<b>qsleep (seconds)</b>
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Similar to SLEEP, but continuing to process Qt events.
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<b>qversion ()</b>
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Returns the LQML version number as 'year.month.counter'. The second
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return value is the Qt version as returned by QLibraryInfo::version().
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<b>reload ()</b>
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Reloads all QML files, clearing the cache.
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<b>root-item ()</b>
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Returns the root item of the QQuickView.
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<b>tr (source &optional context plural-number)</b>
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Macro expanding to QTRANSLATE, which calls QCoreApplication::translate().
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Both SOURCE and CONTEXT can be Lisp forms evaluating to constant strings
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(at compile time). The CONTEXT argument defaults to the Lisp file name.
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For the PLURAL-NUMBER, see Qt Assistant.
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</pre>
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</body>
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</html>
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