- Qt 5.5
- Qt Widgets
- Mouse Button Tester
- buttontester.cpp Example File
- Qt 5.5.1 Reference Documentation

# buttontester.cpp Example File

widgets/mousebuttons/buttontester.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Copyright (C) 2012 Rick Stockton <rickstockton@reno-computerhelp.com>
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** 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."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    #include "buttontester.h"

    #include <QDebug>

    void ButtonTester::mousePressEvent(QMouseEvent *e)
    {
        int j = ButtonTester::buttonByNumber (e->button());
        QString result = "Mouse Press: raw button=" + QString::number(j)
                    + "  Qt=" + enumNameFromValue(e->button());
        QString buttonsString = ButtonTester::enumNamesFromMouseButtons(e->buttons());
        result += "\n heldbuttons " + buttonsString;
        qDebug() << result;
        this->setText(result);
        this->repaint();
    }

    void ButtonTester::mouseReleaseEvent(QMouseEvent *e)
    {
        int j = ButtonTester::buttonByNumber (e->button());
        QString result = "Mouse Release: raw button=" + QString::number(j)
                    + "  Qt=" + enumNameFromValue(e->button());
        QString buttonsString = ButtonTester::enumNamesFromMouseButtons(e->buttons());
        result += "\n heldbuttons " + buttonsString;
        qDebug() << result;
        this->setText(result);
        this->repaint();

    }

    void ButtonTester::mouseDoubleClickEvent(QMouseEvent *e)
    {
        int j = ButtonTester::buttonByNumber (e->button());
        QString result = "Mouse DoubleClick: raw button=" + QString::number(j)
                    + "  Qt=" + enumNameFromValue(e->button());
        QString buttonsString = ButtonTester::enumNamesFromMouseButtons(e->buttons());
        result += "\n heldbuttons" + buttonsString;
        qDebug() << result;
        this->setText(result);
    }

    #ifndef QT_NO_WHEELEVENT
    void ButtonTester::wheelEvent (QWheelEvent *e)
    {
        QString result;
        if (e->delta() > 0) {

            if (e->orientation() == Qt::Vertical) {
                result = "Mouse Wheel Event: UP";
            } else {
                result = "Mouse Wheel Event: LEFT";
            }
        } else if (e->delta() < 0) {
            if (e->orientation() == Qt::Vertical) {
                result = "Mouse Wheel Event: DOWN";
            } else {
                result = "Mouse Wheel Event: RIGHT";
            }
        }
        qDebug() << result;
        this->setText(result);
    }
    #endif

    int ButtonTester::buttonByNumber(const Qt::MouseButton button)
    {
        if (button == Qt::NoButton)      return 0;
        if (button == Qt::LeftButton)    return 1;
        if (button == Qt::RightButton)   return 2;
        if (button == Qt::MiddleButton)  return 3;

    /* Please note that Qt Button #4 corresponds to button #8 on all
     * platforms which EMULATE wheel events by creating button events
     * (Button #4 = Scroll Up; Button #5 = Scroll Down; Button #6 = Scroll
     * Left; and Button #7 = Scroll Right.) This includes X11, with both
     * Xlib and XCB.  So, the "raw button" for "Qt::BackButton" is
     * usually described as "Button #8".

     * If your platform supports "smooth scrolling", then, for the cases of
     * Qt::BackButton and higher, this program will show "raw button" with a
     * value which is too large. Subtract 4 to get the correct button ID for
     * your platform.
     */

        if (button == Qt::BackButton)    return 8;
        if (button == Qt::ForwardButton) return 9;
        if (button == Qt::TaskButton)    return 10;
        if (button == Qt::ExtraButton4)  return 11;
        if (button == Qt::ExtraButton5)  return 12;
        if (button == Qt::ExtraButton6)  return 13;
        if (button == Qt::ExtraButton7)  return 14;
        if (button == Qt::ExtraButton8)  return 15;
        if (button == Qt::ExtraButton9)  return 16;
        if (button == Qt::ExtraButton10) return 17;
        if (button == Qt::ExtraButton11) return 18;
        if (button == Qt::ExtraButton12) return 19;
        if (button == Qt::ExtraButton13) return 20;
        if (button == Qt::ExtraButton14) return 21;
        if (button == Qt::ExtraButton15) return 22;
        if (button == Qt::ExtraButton16) return 23;
        if (button == Qt::ExtraButton17) return 24;
        if (button == Qt::ExtraButton18) return 25;
        if (button == Qt::ExtraButton19) return 26;
        if (button == Qt::ExtraButton20) return 27;
        if (button == Qt::ExtraButton21) return 28;
        if (button == Qt::ExtraButton22) return 29;
        if (button == Qt::ExtraButton23) return 30;
        if (button == Qt::ExtraButton24) return 31;
        qDebug("QMouseShortcutEntry::addShortcut contained Invalid Qt::MouseButton value");
        return 0;
    }

    QString ButtonTester::enumNameFromValue(const Qt::MouseButton button)
    {
        if (button == Qt::NoButton)      return "NoButton";
        if (button == Qt::LeftButton)    return "LeftButton";
        if (button == Qt::RightButton)   return "RightButton";
        if (button == Qt::MiddleButton)  return "MiddleButton";
        if (button == Qt::BackButton)    return "BackButton";
        if (button == Qt::ForwardButton) return "ForwardButton";
        if (button == Qt::TaskButton)    return "TaskButton";
        if (button == Qt::ExtraButton4)  return "ExtraButton4";
        if (button == Qt::ExtraButton5)  return "ExtraButton5";
        if (button == Qt::ExtraButton6)  return "ExtraButton6";
        if (button == Qt::ExtraButton7)  return "ExtraButton7";
        if (button == Qt::ExtraButton8)  return "ExtraButton8";
        if (button == Qt::ExtraButton9)  return "ExtraButton9";
        if (button == Qt::ExtraButton10) return "ExtraButton10";
        if (button == Qt::ExtraButton11) return "ExtraButton11";
        if (button == Qt::ExtraButton12) return "ExtraButton12";
        if (button == Qt::ExtraButton13) return "ExtraButton13";
        if (button == Qt::ExtraButton14) return "ExtraButton14";
        if (button == Qt::ExtraButton15) return "ExtraButton15";
        if (button == Qt::ExtraButton16) return "ExtraButton16";
        if (button == Qt::ExtraButton17) return "ExtraButton17";
        if (button == Qt::ExtraButton18) return "ExtraButton18";
        if (button == Qt::ExtraButton19) return "ExtraButton19";
        if (button == Qt::ExtraButton20) return "ExtraButton20";
        if (button == Qt::ExtraButton21) return "ExtraButton21";
        if (button == Qt::ExtraButton22) return "ExtraButton22";
        if (button == Qt::ExtraButton23) return "ExtraButton23";
        if (button == Qt::ExtraButton24) return "ExtraButton24";
        qDebug("QMouseShortcutEntry::addShortcut contained Invalid Qt::MouseButton value");
        return "NoButton";
    }

    QString ButtonTester::enumNamesFromMouseButtons(const Qt::MouseButtons buttons)
    {
        QString returnText = "";
        if (buttons == Qt::NoButton)      return "NoButton";
        if (buttons & Qt::LeftButton)    returnText += "LeftButton ";
        if (buttons & Qt::RightButton)   returnText +=  "RightButton ";
        if (buttons & Qt::MiddleButton)  returnText +=  "MiddleButton ";
        if (buttons & Qt::BackButton)    returnText +=  "BackButton ";
        if (buttons & Qt::ForwardButton) returnText +=  "ForwardButton ";
        if (buttons & Qt::TaskButton)    returnText +=  "TaskButton ";
        if (buttons & Qt::ExtraButton4)  returnText +=  "ExtraButton4 ";
        if (buttons & Qt::ExtraButton5)  returnText +=  "ExtraButton5 ";
        if (buttons & Qt::ExtraButton6)  returnText +=  "ExtraButton6 ";
        if (buttons & Qt::ExtraButton7)  returnText +=  "ExtraButton7 ";
        if (buttons & Qt::ExtraButton8)  returnText +=  "ExtraButton8 ";
        if (buttons & Qt::ExtraButton9)  returnText +=  "ExtraButton9 ";
        if (buttons & Qt::ExtraButton10) returnText +=  "ExtraButton10 ";
        if (buttons & Qt::ExtraButton11) returnText +=  "ExtraButton11 ";
        if (buttons & Qt::ExtraButton12) returnText +=  "ExtraButton12 ";
        if (buttons & Qt::ExtraButton13) returnText +=  "ExtraButton13 ";
        if (buttons & Qt::ExtraButton14) returnText +=  "ExtraButton14 ";
        if (buttons & Qt::ExtraButton15) returnText +=  "ExtraButton15 ";
        if (buttons & Qt::ExtraButton16) returnText +=  "ExtraButton16 ";
        if (buttons & Qt::ExtraButton17) returnText +=  "ExtraButton17 ";
        if (buttons & Qt::ExtraButton18) returnText +=  "ExtraButton18 ";
        if (buttons & Qt::ExtraButton19) returnText +=  "ExtraButton19 ";
        if (buttons & Qt::ExtraButton20) returnText +=  "ExtraButton20 ";
        if (buttons & Qt::ExtraButton21) returnText +=  "ExtraButton21 ";
        if (buttons & Qt::ExtraButton22) returnText +=  "ExtraButton22 ";
        if (buttons & Qt::ExtraButton23) returnText +=  "ExtraButton23 ";
        if (buttons & Qt::ExtraButton24) returnText +=  "ExtraButton24 ";
        return returnText;
    }