forked from qt-creator/qt-creator
acf1ecb47f
This adds support for inheritance to the existing experimental
implementation in tests/manual/layoutbuilder/experimental
and gets rid of the tight coupling and qobject_casts in the
setter implementations. Plan is to use this (minus "bindings"
via *::Id / id()) for utils/layoutbuilder.{h,cpp} later.
The "binding" support via id() is still experimental, and in
its current version not really useful. A possible idea would
be to re-use the Tasking::Storage idea, but it's not quite
clear how to expose that "long distance" (i.e. across multiple,
unrelated top-level builders). However, this is not used in
in current uses of the "old" layoutbuilder, so this is not
blocking anything.
Some notes:
The *Interface hierarchy is not strictly needed, it could directly
act on things in the QObject hierarchy but would then need #includes
of all "buildable" classes, which can be avoided in the current
implementation. Besides, the indirection allows us to tweak and/or
add functionailty to the Qt classes in the indirecting code, that
does not necessarily have to match 1:1 to the underlyings Qt classes.
The std::function based callbacks are quite fat and not functionally
needed and could be dropped by "inlining" the relevant bits from
typical std::function implementations. However, these invariably seem
to end up calling functions through pointers to (ABI-compatible, but)
different types, which is for /user/ code formally undefined behavior
according to C++11 §5.2.10/6. To avoid a discussion whether doing
the same ourselves is tolerable or not, this uses std::function
and pays the price of the overhead.
Change-Id: I6d40c1bd48cf065fcf211eaff8d9a2298bca20eb
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>
80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
// Copyright (C) 2024 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include "lb.h"
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#include <QApplication>
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#include <QWidget>
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#include <QLabel>
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#include <QGroupBox>
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#include <QTextEdit>
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using namespace Layouting;
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int main(int argc, char *argv[])
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{
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QApplication app(argc, argv);
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TextEdit::Id textId;
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QWidget *w = nullptr;
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QGroupBox *g = nullptr;
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QLabel *l = nullptr;
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Group {
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bindTo(&w), // Works, as GroupInterface derives from WidgetInterface
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// bindTo(&l), // Does (intentionally) not work, GroupInterface does not derive from LabelInterface
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bindTo(&g),
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size(300, 200),
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title("HHHHHHH"),
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Form {
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"Hallo",
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Group {
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title("Title"),
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Column {
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Label {
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text("World")
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},
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TextEdit {
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id(&textId),
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text("Och noe")
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}
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}
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},
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br,
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"Col",
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Column {
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Row { "1", "2", "3" },
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Row { "3", "4", "6" }
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},
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br,
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"Grid",
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Grid {
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Span { 2, QString("1111111") }, "3", br,
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"3", "4", "6", br,
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"4", empty, "6", br,
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hr, "4", "6"
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},
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br,
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Column {
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Label {
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text("Hi"),
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size(30, 20)
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},
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Row {
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SpinBox {
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onTextChanged([&](const QString &text) { textId->setText(text); })
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},
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st,
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PushButton {
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text("Quit"),
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onClicked(QApplication::quit)
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}
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}
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}
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}
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}.show();
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return app.exec();
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}
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