CAN-Example: Add a dedicated send frame group box

By moving the send frame logic to a separate panel, the MainWindow
gets easier to understand as it only connects signals to slots.

The new SendFramesBox also does more sanity check on the parameters
(options that exclude each other are checked) and forbids invalid input
by using QValidators. The payload input is also prettified with spaces.
This was first done by InputMasks but this had strange side effects
so now the input validator is used for this task also.

Change-Id: Ib95605ce4bc23b52d1cf5d082b1533b2a59f7749
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

1 files changed, 100 insertions, 0 deletions

diff --git a/examples/serialbus/can/sendframebox.h b/examples/serialbus/can/sendframebox.h
new file mode 100644
index 0000000..bea4f7d
--- /dev/null
+++ b/examples/serialbus/can/sendframebox.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 Andre Hartmann <aha_1980@gmx.de>
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the QtSerialBus module.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SENDFRAMEBOX_H
+#define SENDFRAMEBOX_H
+
+#include <QCanBusFrame>
+#include <QGroupBox>
+#include <QRegularExpression>
+#include <QValidator>
+
+namespace Ui {
+class SendFrameBox;
+}
+
+class HexIntegerValidator : public QValidator
+{
+    Q_OBJECT
+public:
+    explicit HexIntegerValidator(QObject *parent = nullptr);
+
+    QValidator::State validate(QString &input, int &) const;
+
+    void setMaximum(uint maximum);
+
+private:
+    uint m_maximum = 0;
+};
+
+class HexStringValidator : public QValidator
+{
+    Q_OBJECT
+
+public:
+    explicit HexStringValidator(QObject *parent = nullptr);
+
+    QValidator::State validate(QString &input, int &pos) const;
+
+    void setMaxLength(int maxLength);
+
+private:
+    int m_maxLength = 0;
+};
+
+class SendFrameBox : public QGroupBox
+{
+    Q_OBJECT
+
+public:
+    explicit SendFrameBox(QWidget *parent = nullptr);
+    ~SendFrameBox();
+
+signals:
+    void sendFrame(const QCanBusFrame &frame);
+
+private:
+    Ui::SendFrameBox *m_ui = nullptr;
+
+    HexIntegerValidator *m_hexIntegerValidator = nullptr;
+    HexStringValidator *m_hexStringValidator = nullptr;
+};
+
+#endif // SENDFRAMEBOX_H