cc15e42e2c
As a header, it would otherwise make all TUs that include it (with PCH: all) incompatible with QT_NO_FOREACH. Without deeper analysis (which economy of time forbids in this case, given this is just a manual test that's probably run 10 times per year), and seeing as this is in an event handler, I opted to play it safe and iterate over a copy (which is exactly what Q_FOREACH does). Added a comment to indicate it may not be needed. Pick-to: 6.6 6.5 Task-number: QTBUG-115839 Change-Id: I7db75321dd34888f6dd7a64cccb7462ff35935fa Reviewed-by: Ahmad Samir <a.samirh78@gmail.com> Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
// Copyright (C) 2017 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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#ifndef ITEMWINDOW_H
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#define ITEMWINDOW_H
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#include <QtGui/QKeySequence>
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#include <QtGui/QRasterWindow>
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QT_USE_NAMESPACE
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// ItemWindow: Primitive UI item classes for use with a ItemWindow based
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// on QRasterWindow without widgets allowing a simple UI without widgets.
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// Basic item to be used in a ItemWindow
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class Item : public QObject {
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Q_OBJECT
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public:
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explicit Item(QObject *parent = nullptr) : QObject(parent) {}
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virtual void paint(QPainter &painter) = 0;
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virtual void mouseEvent(QMouseEvent *) {}
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virtual void keyEvent(QKeyEvent *) {}
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};
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// Positionable text item
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class TextItem : public Item {
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Q_OBJECT
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public:
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explicit TextItem(const QString &text, const QRect &rect, const QColor &col,
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QObject *parent = nullptr)
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: Item(parent), m_text(text), m_rect(rect), m_col(col) {}
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void paint(QPainter &painter) override;
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QRect rect() const { return m_rect; }
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private:
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const QString m_text;
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const QRect m_rect;
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const QColor m_col;
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};
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// "button" item
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class ButtonItem : public TextItem {
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Q_OBJECT
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public:
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explicit ButtonItem(const QString &text, const QRect &rect, const QColor &col,
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QObject *parent = nullptr)
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: TextItem(text, rect, col, parent), m_shortcut(0) {}
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void mouseEvent(QMouseEvent *mouseEvent) override;
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void keyEvent(QKeyEvent *keyEvent) override;
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int shortcut() const { return m_shortcut; }
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void setShortcut(int shortcut) { m_shortcut = shortcut; }
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signals:
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void clicked();
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private:
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int m_shortcut;
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};
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#define PROPAGATE_EVENT(windowHandler, eventClass, itemHandler) \
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void windowHandler(eventClass *e) override \
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{ \
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const auto copy = m_items; /* needed? */ \
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for (Item *i : copy) \
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i->itemHandler(e); \
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}
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class ItemWindow : public QRasterWindow {
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Q_OBJECT
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public:
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explicit ItemWindow(QWindow *parent = nullptr) : QRasterWindow(parent), m_background(Qt::white) {}
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void addItem(Item *item) { m_items.append(item); }
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QColor background() const { return m_background; }
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void setBackground(const QColor &background) { m_background = background; }
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protected:
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void paintEvent(QPaintEvent *) override;
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PROPAGATE_EVENT(mousePressEvent, QMouseEvent, mouseEvent)
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PROPAGATE_EVENT(mouseReleaseEvent, QMouseEvent, mouseEvent)
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PROPAGATE_EVENT(mouseDoubleClickEvent, QMouseEvent, mouseEvent)
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PROPAGATE_EVENT(mouseMoveEvent, QMouseEvent, mouseEvent)
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PROPAGATE_EVENT(keyPressEvent, QKeyEvent, keyEvent)
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PROPAGATE_EVENT(keyReleaseEvent, QKeyEvent, keyEvent)
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private:
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QList<Item *> m_items;
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QColor m_background;
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};
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#endif // ITEMWINDOW_H
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