File 2001-numeral-system-view.patch of Package kcalc

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File 2001-numeral-system-view.patch of Package kcalc (Revision 1318cbb41b2d995f57246929ed4e1b74)

Currently displaying revision 1318cbb41b2d995f57246929ed4e1b74 , Show latest

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9a66d9655f0371aa23f042d3aabc1fbe9c4dc3f6..7281820994addf92882f04210a52c8f00d12e305 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,6 +103,7 @@ target_sources(kcalc PRIVATE
    kcalc_statusbar.cpp
    kcalc_stats.cpp
    kcalc_history.cpp
+   kcalc_numeralsystem_view.cpp
    kcalc_const_menu.h
    kcalc_core.h
    kcalc_core_p.h
@@ -120,6 +121,7 @@ target_sources(kcalc PRIVATE
    kcalc_priority_levels_p.h
    kcalc_display.h
    kcalc_history.h
+   kcalc_numeralsystem_view.h
    kcalc.qrc )
 
 
diff --git a/kcalc.cpp b/kcalc.cpp
index c51c843bcce6ee61acb7aedac42ec69fb30799a0..29b88ca40af84c61afe317840059da81685b8bbb 100644
--- a/kcalc.cpp
+++ b/kcalc.cpp
@@ -78,20 +78,18 @@ KCalculator::KCalculator(QWidget *parent)
 
     toolBar()->hide(); // hide by default
 
-    // create button groups
-    base_choose_group_ = new QButtonGroup(this);
-    base_choose_group_->setExclusive(true);
-    base_choose_group_->addButton(hexRadio, HexMode);
-    base_choose_group_->addButton(decRadio, DecMode);
-    base_choose_group_->addButton(octRadio, OctMode);
-    base_choose_group_->addButton(binRadio, BinMode);
-    connect(base_choose_group_, &QButtonGroup::buttonClicked, this, &KCalculator::slotBaseSelected);
-
-    base_conversion_labels_ = {binDisplay, hexDisplay, decDisplay, octDisplay};
+    numeralSystemComboBox->addItem(i18nc("Hexadecimal numeral system", "Hex"), HexMode);
+    numeralSystemComboBox->addItem(i18nc("Decimal numeral system", "Dec"), DecMode);
+    numeralSystemComboBox->addItem(i18nc("Octal numeral system", "Oct"), OctMode);
+    numeralSystemComboBox->addItem(i18nc("Binary numeral system", "Bin"), BinMode);
+    numeralSystemComboBox->setCurrentIndex(-1);
+    connect(numeralSystemComboBox, &QComboBox::currentIndexChanged, this, &KCalculator::slotBaseSelected);
+    connect(numeralSystemComboBox, &QComboBox::activated, this, [this]() {
+        KCalcSettings::setBaseMode(numeralSystemComboBox->currentData().toInt());
+    });
 
     angle_choose_group_ = new QButtonGroup(this);
-    angle_choose_group_->
-    setExclusive(true);
+    angle_choose_group_->setExclusive(true);
     angle_choose_group_->addButton(degRadio, DegMode);
     angle_choose_group_->addButton(radRadio, RadMode);
     angle_choose_group_->addButton(gradRadio, GradMode);
@@ -131,17 +129,17 @@ KCalculator::KCalculator(QWidget *parent)
 
     switch (calculatorMode) {
     case KCalcSettings::EnumCalculatorMode::science:
-        action_mode_science_->setChecked(true);
+        action_mode_science_->trigger();
         break;
     case KCalcSettings::EnumCalculatorMode::statistics:
-        action_mode_statistic_->setChecked(true);
+        action_mode_statistic_->trigger();
         break;
     case KCalcSettings::EnumCalculatorMode::numeral:
-        action_mode_numeral_->setChecked(true);
+        action_mode_numeral_->trigger();
         break;
     case KCalcSettings::EnumCalculatorMode::simple:
     default:
-        action_mode_simple_->setChecked(true);
+        action_mode_simple_->trigger();
     }
     is_still_in_launch_ = false;
 
@@ -178,22 +176,22 @@ void KCalculator::setupMainActions()
     action_mode_simple_ = actionCollection()->add<KToggleAction>(QStringLiteral("mode_simple"));
     action_mode_simple_->setActionGroup(modeGroup);
     action_mode_simple_->setText(i18n("Simple Mode"));
-    connect(action_mode_simple_, &KToggleAction::toggled, this, &KCalculator::slotSetSimpleMode);
+    connect(action_mode_simple_, &KToggleAction::triggered, this, &KCalculator::slotSetSimpleMode);
 
     action_mode_science_ = actionCollection()->add<KToggleAction>(QStringLiteral("mode_science"));
     action_mode_science_->setActionGroup(modeGroup);
     action_mode_science_->setText(i18n("Science Mode"));
-    connect(action_mode_science_, &KToggleAction::toggled, this, &KCalculator::slotSetScienceMode);
+    connect(action_mode_science_, &KToggleAction::triggered, this, &KCalculator::slotSetScienceMode);
 
     action_mode_statistic_ = actionCollection()->add<KToggleAction>(QStringLiteral("mode_statistics"));
     action_mode_statistic_->setActionGroup(modeGroup);
     action_mode_statistic_->setText(i18n("Statistic Mode"));
-    connect(action_mode_statistic_, &KToggleAction::toggled, this, &KCalculator::slotSetStatisticMode);
+    connect(action_mode_statistic_, &KToggleAction::triggered, this, &KCalculator::slotSetStatisticMode);
 
     action_mode_numeral_ = actionCollection()->add<KToggleAction>(QStringLiteral("mode_numeral"));
     action_mode_numeral_->setActionGroup(modeGroup);
     action_mode_numeral_->setText(i18n("Numeral System Mode"));
-    connect(action_mode_numeral_, &KToggleAction::toggled, this, &KCalculator::slotSetNumeralMode);
+    connect(action_mode_numeral_, &KToggleAction::triggered, this, &KCalculator::slotSetNumeralMode);
 
     // settings menu
     action_history_show_ = actionCollection()->add<KToggleAction>(QStringLiteral("show_history"));
@@ -747,70 +745,67 @@ void KCalculator::slotConstantToDisplay(const science_constant &const_chosen)
 // Name: slotBaseSelected
 // Desc: changes the selected numeric base
 //------------------------------------------------------------------------------
-void KCalculator::slotBaseSelected(QAbstractButton *button)
+void KCalculator::slotBaseSelected()
 {
-    if (button) {
-        const int base = base_choose_group_->id(button);
-        int current_base;
-
-        // set display & statusbar (if item exist in statusbar)
-        statusBar()->setBase(base);
-        switch (base) {
-        case BinMode:
-            current_base = calc_display->setBase(NumBase(2));
-            base_label->setText(QStringLiteral("Bin"));
-            base_mode_ = 2;
-            break;
-        case OctMode:
-            current_base = calc_display->setBase(NumBase(8));
-            base_label->setText(QStringLiteral("Oct"));
-            base_mode_ = 8;
-            break;
-        case DecMode:
-            current_base = calc_display->setBase(NumBase(10));
-            base_label->setText(QStringLiteral("Dec"));
-            base_mode_ = 10;
-            break;
-        case HexMode:
-            current_base = calc_display->setBase(NumBase(16));
-            base_label->setText(QStringLiteral("Hex"));
-            base_mode_ = 16;
-            break;
-        default:
-            base_label->setText(QStringLiteral("Error"));
-            return;
-        }
+    const int base = numeralSystemComboBox->currentData().toInt();
+    int current_base;
 
-        // Enable the buttons available in this base
-        for (int i = 0; i < current_base; ++i) {
-            (num_button_group_->buttons().at(i))->setEnabled(true);
-        }
+    // set display & statusbar (if item exist in statusbar)
+    statusBar()->setBase(base);
+    switch (base) {
+    case BinMode:
+        current_base = calc_display->setBase(NumBase(2));
+        base_label->setText(QStringLiteral("Bin"));
+        base_mode_ = 2;
+        break;
+    case OctMode:
+        current_base = calc_display->setBase(NumBase(8));
+        base_label->setText(QStringLiteral("Oct"));
+        base_mode_ = 8;
+        break;
+    case DecMode:
+        current_base = calc_display->setBase(NumBase(10));
+        base_label->setText(QStringLiteral("Dec"));
+        base_mode_ = 10;
+        break;
+    case HexMode:
+        current_base = calc_display->setBase(NumBase(16));
+        base_label->setText(QStringLiteral("Hex"));
+        base_mode_ = 16;
+        break;
+    default:
+        base_label->setText(QStringLiteral("Error"));
+        return;
+    }
 
-        // Disable the buttons not available in this base
-        for (int i = current_base; i < 16; ++i) {
-            (num_button_group_->buttons().at(i))->setEnabled(false);
-        }
+    // Enable the buttons available in this base
+    for (int i = 0; i < current_base; ++i) {
+        (num_button_group_->buttons().at(i))->setEnabled(true);
+    }
 
-        // Only enable the decimal point in decimal
-        pbPeriod->setEnabled(current_base == NB_DECIMAL);
+    // Disable the buttons not available in this base
+    for (int i = current_base; i < 16; ++i) {
+        (num_button_group_->buttons().at(i))->setEnabled(false);
+    }
 
-        // Only enable the x*10^y button in decimal
-        pbEE->setEnabled(current_base == NB_DECIMAL);
+    // Only enable the decimal point in decimal
+    pbPeriod->setEnabled(current_base == NB_DECIMAL);
 
-        // Disable buttons that make only sense with floating point numbers
-        if (current_base != NB_DECIMAL) {
-            for (QAbstractButton *btn : std::as_const(scientific_buttons_)) {
-                btn->setEnabled(false);
-            }
-        } else {
-            for (QAbstractButton *btn : std::as_const(scientific_buttons_)) {
-                btn->setEnabled(true);
-            }
-        }
+    // Only enable the x*10^y button in decimal
+    pbEE->setEnabled(current_base == NB_DECIMAL);
 
-        KCalcSettings::setBaseMode(base);
-        Q_EMIT slotInputChanged();
+    // Disable buttons that make only sense with floating point numbers
+    if (current_base != NB_DECIMAL) {
+        for (QAbstractButton *btn : std::as_const(scientific_buttons_)) {
+            btn->setEnabled(false);
+        }
+    } else {
+        for (QAbstractButton *btn : std::as_const(scientific_buttons_)) {
+            btn->setEnabled(true);
+        }
     }
+
+    slotInputChanged();
 }
 
 //------------------------------------------------------------------------------
@@ -844,7 +839,7 @@ void KCalculator::keyPressEvent(QKeyEvent *e)
     // Workaround for bug #283521
     // Unfortunately adding multiple shortcuts (A, Shift+A) to pushbuttons
     // does not work properly, so we handle the A-F keypresses with shift in Hex mode here
-    if (hexRadio->isChecked() && e->modifiers() & Qt::ShiftModifier) {
+    if (numeralSystemComboBox->currentData() == HexMode && e->modifiers() & Qt::ShiftModifier) {
         switch (e->key()) {
         case Qt::Key_A:
             pbA->animateClick();
@@ -1423,6 +1418,9 @@ void KCalculator::slotInputChanged()
         switch (calculation_result_code_) {
         case CalcEngine::ResultCode::MISIING_RIGHT_UNARY_ARG:
         case CalcEngine::ResultCode::MISIING_RIGHT_BINARY_ARG:
+            if (calc_display->text().isEmpty()) {
+                numeralSystemView->clearNumber();
+            }
             break;
         case CalcEngine::ResultCode::MATH_ERROR:
             updateDisplay(UPDATE_CLEAR);
@@ -1434,6 +1432,7 @@ void KCalculator::slotInputChanged()
         return;
     } else if (m_parsingResult == KCalcParser::ParsingResult::SUCCESS_SINGLE_KNUMBER) {
         updateDisplay(UPDATE_CLEAR);
+        numeralSystemView->setNumber(core.getResult().toUint64(), base_mode_);
         return;
     } else {
         this->commit_Result_(false);
@@ -2013,12 +2012,7 @@ void KCalculator::slotSetNumeralMode()
 //------------------------------------------------------------------------------
 void KCalculator::slotBaseModeAmountChanged(const KNumber &number)
 {
-    quint64 n = number.toUint64();
-
-    decDisplay->setText(QString::number(n, 10));
-    binDisplay->setText(QString::number(n, 2));
-    octDisplay->setText(QString::number(n, 8));
-    hexDisplay->setText(QString::number(n, 16).toUpper());
+    numeralSystemView->setNumber(number.toUint64(), base_mode_);
 }
 
 //------------------------------------------------------------------------------
@@ -2109,14 +2103,9 @@ void KCalculator::showLogicButtons(bool toggled)
         setBase();
         statusBar()->setBaseIndicatorVisible(true);
 
-        const auto buttons = base_choose_group_->buttons();
-        for (QAbstractButton *btn : buttons) {
-            btn->show();
-        }
+        numeralSystemComboBox->show();
+        numeralSystemView->show();
 
-        for (QLabel *lbl : base_conversion_labels_) {
-            lbl->show();
-        }
         connect(calc_display, &KCalcDisplay::changedAmount, this, &KCalculator::slotBaseModeAmountChanged);
 
         for (int i = 10; i < 16; ++i) {
@@ -2131,17 +2120,11 @@ void KCalculator::showLogicButtons(bool toggled)
             btn->hide();
         }
 
-        // Hide Hex-Buttons, but first switch back to decimal
-        decRadio->animateClick();
+        numeralSystemComboBox->hide();
+        numeralSystemView->hide();
 
-        const auto buttons = base_choose_group_->buttons();
-        for (QAbstractButton *btn : buttons) {
-            btn->hide();
-        }
+        numeralSystemComboBox->setCurrentIndex(numeralSystemComboBox->findData(DecMode));
 
-        for (QLabel *lbl : base_conversion_labels_) {
-            lbl->hide();
-        }
         connect(calc_display, &KCalcDisplay::changedAmount, this, &KCalculator::slotBaseModeAmountChanged);
 
         statusBar()->setBaseIndicatorVisible(false);
@@ -2303,6 +2286,7 @@ void KCalculator::updateDisplay(UpdateFlags flags)
         calc_display->setText(i18n("Input error"));
     } else if (flags & UPDATE_CLEAR) {
         calc_display->sendEvent(KCalcDisplay::EventReset);
+        numeralSystemView->clearNumber();
     } else {
         calc_display->update();
     }
@@ -2720,9 +2704,7 @@ void KCalculator::setAngle()
 //------------------------------------------------------------------------------
 void KCalculator::setBase()
 {
-    if (QAbstractButton *const btn = base_choose_group_->button(KCalcSettings::baseMode())) {
-        btn->animateClick();
-    }
+    numeralSystemComboBox->setCurrentIndex(numeralSystemComboBox->findData(KCalcSettings::baseMode()));
 }
 
 //------------------------------------------------------------------------------
diff --git a/kcalc.h b/kcalc.h
index 81962b42d647950a9dab8f3da2fd9a2aaeda98fa..e2600d40f4cc84454b3880555f147ca6c52038ce 100644
--- a/kcalc.h
+++ b/kcalc.h
@@ -175,7 +175,7 @@ protected Q_SLOTS:
     void slotConstantsShow(bool toggled);
     void slotBitsetshow(bool toggled);
     void slotAngleSelected(QAbstractButton *button, bool checked);
-    void slotBaseSelected(QAbstractButton *button);
+    void slotBaseSelected();
     void slotNumberclicked(QAbstractButton *button);
     void slotEEclicked();
     void slotShifttoggled(bool myboolean);
@@ -271,7 +271,6 @@ private:
     Constants *constants_ = nullptr; // this is the dialog for configuring const buttons
 
     QButtonGroup *angle_choose_group_ = nullptr;
-    QButtonGroup *base_choose_group_ = nullptr;
     // num_button_group_: 0-9 = digits, 0xA-0xF = hex-keys
     QButtonGroup *num_button_group_ = nullptr;
 
@@ -280,8 +279,6 @@ private:
     QList<QAbstractButton *> stat_buttons_;
     QList<QAbstractButton *> const_buttons_;
 
-    std::array<QLabel *, 4> base_conversion_labels_;
-
     KToggleAction *action_history_show_ = nullptr;
     KToggleAction *action_bitset_show_ = nullptr;
     KToggleAction *action_constants_show_ = nullptr;
diff --git a/kcalc.ui b/kcalc.ui
index 192b153b99da60419e1a3bf0b1669180e221f531..d57bb7d1079abe617c75007fca7a2f5ccd139301 100644
--- a/kcalc.ui
+++ b/kcalc.ui
@@ -427,165 +427,22 @@
         </widget>
        </item>
        <item>
-        <layout class="QVBoxLayout" name="verticalLayout" stretch="0,0">
-         <property name="leftMargin">
-          <number>0</number>
-         </property>
-         <property name="rightMargin">
-          <number>60</number>
-         </property>
-         <item>
-          <widget class="QRadioButton" name="hexRadio">
-           <property name="toolTip">
-            <string>Switch base to hexadecimal.</string>
-           </property>
-           <property name="text">
-            <string>He&amp;x</string>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="KSqueezedTextLabel" name="hexDisplay">
-           <property name="minimumSize">
-            <size>
-             <width>65</width>
-             <height>0</height>
-            </size>
-           </property>
-           <property name="maximumSize">
-            <size>
-             <width>65</width>
-             <height>16777215</height>
-            </size>
-           </property>
-           <property name="text">
-            <string>KS…el</string>
-           </property>
-          </widget>
-         </item>
-        </layout>
-       </item>
-       <item>
-        <layout class="QVBoxLayout" name="verticalLayout_2">
-         <property name="rightMargin">
-          <number>60</number>
-         </property>
-         <item>
-          <widget class="QRadioButton" name="decRadio">
-           <property name="toolTip">
-            <string>Switch base to decimal.</string>
-           </property>
-           <property name="text">
-            <string>&amp;Dec</string>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="KSqueezedTextLabel" name="decDisplay">
-           <property name="minimumSize">
-            <size>
-             <width>65</width>
-             <height>0</height>
-            </size>
-           </property>
-           <property name="maximumSize">
-            <size>
-             <width>65</width>
-             <height>16777215</height>
-            </size>
-           </property>
-           <property name="text">
-            <string>KS…el</string>
-           </property>
-          </widget>
-         </item>
-        </layout>
-       </item>
-       <item>
-        <layout class="QVBoxLayout" name="verticalLayout_3">
-         <property name="rightMargin">
-          <number>60</number>
-         </property>
-         <item>
-          <widget class="QRadioButton" name="octRadio">
-           <property name="toolTip">
-            <string>Switch base to octal.</string>
-           </property>
-           <property name="text">
-            <string>Oc&amp;t</string>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="KSqueezedTextLabel" name="octDisplay">
-           <property name="minimumSize">
-            <size>
-             <width>65</width>
-             <height>0</height>
-            </size>
-           </property>
-           <property name="maximumSize">
-            <size>
-             <width>65</width>
-             <height>16777215</height>
-            </size>
-           </property>
-           <property name="text">
-            <string>KS…el</string>
-           </property>
-          </widget>
-         </item>
-        </layout>
-       </item>
-       <item>
-        <layout class="QVBoxLayout" name="verticalLayout_4">
-         <property name="rightMargin">
-          <number>20</number>
+        <widget class="QComboBox" name="numeralSystemComboBox">
+         <property name="toolTip">
+          <string>Switch base</string>
          </property>
-         <item>
-          <widget class="QRadioButton" name="binRadio">
-           <property name="toolTip">
-            <string>Switch base to binary.</string>
-           </property>
-           <property name="text">
-            <string>&amp;Bin</string>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="KSqueezedTextLabel" name="binDisplay">
-           <property name="minimumSize">
-            <size>
-             <width>65</width>
-             <height>0</height>
-            </size>
-           </property>
-           <property name="maximumSize">
-            <size>
-             <width>65</width>
-             <height>16777215</height>
-            </size>
-           </property>
-           <property name="text">
-            <string>KS…el</string>
-           </property>
-          </widget>
-         </item>
-        </layout>
+        </widget>
        </item>
        <item>
         <spacer name="horizontalSpacer">
          <property name="orientation">
           <enum>Qt::Horizontal</enum>
          </property>
-         <property name="sizeHint" stdset="0">
-          <size>
-           <width>40</width>
-           <height>20</height>
-          </size>
-         </property>
         </spacer>
        </item>
+       <item>
+        <widget class="KCalcNumeralSystemView" name="numeralSystemView"/>
+       </item>
       </layout>
      </item>
      <item>
@@ -1831,6 +1688,11 @@
    <header>kcalc_display_frame.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>KCalcNumeralSystemView</class>
+   <extends>QWidget</extends>
+   <header>kcalc_numeralsystem_view.h</header>
+  </customwidget>
  </customwidgets>
  <tabstops>
   <tabstop>pb0</tabstop>
diff --git a/kcalc_numeralsystem_view.cpp b/kcalc_numeralsystem_view.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..24d029fd34cdc905e329743dfb30d239e844d2ca
--- /dev/null
+++ b/kcalc_numeralsystem_view.cpp
@@ -0,0 +1,143 @@
+/*
+ *    SPDX-FileCopyrightText: 2024 Eugene Popov <popov895@ukr.net>
+ *    SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "kcalc_numeralsystem_view.h"
+
+#include <QApplication>
+#include <QBoxLayout>
+#include <QClipboard>
+#include <QEvent>
+#include <QLabel>
+
+#include <KLocalizedString>
+#include <KSqueezedTextLabel>
+
+// KCalcNumeralSystemLabel
+
+KCalcNumeralSystemLabel::KCalcNumeralSystemLabel(QWidget *parent)
+    : QWidget(parent)
+{
+    setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
+
+    m_textLabel = new KSqueezedTextLabel;
+    m_textLabel->setContextMenuPolicy(Qt::NoContextMenu);
+
+    m_numeralSystemLabel = new QLabel;
+
+    QHBoxLayout *layout = new QHBoxLayout;
+    layout->setContentsMargins(QMargins());
+    layout->setSpacing(0);
+    layout->addWidget(m_textLabel);
+    layout->addWidget(m_numeralSystemLabel, 0, Qt::AlignBottom);
+    setLayout(layout);
+
+    setContextMenuPolicy(Qt::ActionsContextMenu);
+
+    addAction(QIcon::fromTheme(QStringLiteral("edit-copy")), i18nc("@action:inmenu", "&Copy"), this, [this]() {
+        QApplication::clipboard()->setText(m_textLabel->fullText());
+    });
+
+    updateAlignment();
+}
+
+void KCalcNumeralSystemLabel::setNumber(quint64 number, int base)
+{
+    m_textLabel->setText(QString::number(number, base).toUpper());
+    m_textLabel->setAccessibleName(m_textLabel->fullText());
+
+    m_numeralSystemLabel->setText(QStringLiteral("<small><b>%1</b></small>").arg(base));
+}
+
+void KCalcNumeralSystemLabel::changeEvent(QEvent *event)
+{
+    QWidget::changeEvent(event);
+
+    if (event->type() == QEvent::LayoutDirectionChange) {
+        updateAlignment();
+    }
+}
+
+void KCalcNumeralSystemLabel::updateAlignment()
+{
+    m_textLabel->setAlignment(layoutDirection() == Qt::RightToLeft ? Qt::AlignLeft : Qt::AlignRight);
+}
+
+// KCalcNumeralSystemView
+
+KCalcNumeralSystemView::KCalcNumeralSystemView(QWidget *parent)
+    : QWidget(parent)
+{
+    setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
+
+    m_label1 = new KCalcNumeralSystemLabel;
+    m_label2 = new KCalcNumeralSystemLabel;
+    m_label3 = new KCalcNumeralSystemLabel;
+
+    QHBoxLayout *layout = new QHBoxLayout;
+    layout->setSpacing(12);
+    layout->addWidget(m_label1, 1);
+    layout->addWidget(m_label2, 1);
+    layout->addWidget(m_label3, 1);
+    setLayout(layout);
+
+    updateLabels();
+}
+
+void KCalcNumeralSystemView::setNumber(quint64 number, int base)
+{
+    if (m_number == number && m_base == base) {
+        return;
+    }
+
+    m_number = number;
+    m_base = base;
+
+    updateLabels();
+}
+
+void KCalcNumeralSystemView::clearNumber()
+{
+    if (!m_number) {
+        return;
+    }
+
+    m_number.reset();
+
+    updateLabels();
+}
+
+void KCalcNumeralSystemView::updateLabels()
+{
+    const bool isValidNumber = m_number.has_value();
+    if (isValidNumber) {
+        const quint64 number = m_number.value();
+        switch (m_base) {
+        case 16:
+            m_label1->setNumber(number, 10);
+            m_label2->setNumber(number, 8);
+            m_label3->setNumber(number, 2);
+            break;
+        case 8:
+            m_label1->setNumber(number, 16);
+            m_label2->setNumber(number, 10);
+            m_label3->setNumber(number, 2);
+            break;
+        case 2:
+            m_label1->setNumber(number, 16);
+            m_label2->setNumber(number, 10);
+            m_label3->setNumber(number, 8);
+            break;
+        default: // 10
+            m_label1->setNumber(number, 16);
+            m_label2->setNumber(number, 8);
+            m_label3->setNumber(number, 2);
+            break;
+        }
+    }
+
+    for (KCalcNumeralSystemLabel *label : { m_label1, m_label2, m_label3 }) {
+        label->setVisible(isValidNumber);
+    }
+}
diff --git a/kcalc_numeralsystem_view.h b/kcalc_numeralsystem_view.h
new file mode 100644
index 0000000000000000000000000000000000000000..60b2832c5d1be3803c2cd025bac4f3e8c02ceff6
--- /dev/null
+++ b/kcalc_numeralsystem_view.h
@@ -0,0 +1,57 @@
+/*
+ *    SPDX-FileCopyrightText: 2024 Eugene Popov <popov895@ukr.net>
+ *    SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef KCALCNUMERALSYSTEMVIEW_H
+#define KCALCNUMERALSYSTEMVIEW_H
+
+#include <QWidget>
+
+class QLabel;
+
+class KSqueezedTextLabel;
+
+// KCalcNumeralSystemLabel
+class KCalcNumeralSystemLabel : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit KCalcNumeralSystemLabel(QWidget *parent = nullptr);
+
+    void setNumber(quint64 number, int base);
+
+protected:
+    void changeEvent(QEvent *event) override;
+
+private:
+    void updateAlignment();
+
+    KSqueezedTextLabel *m_textLabel;
+    QLabel *m_numeralSystemLabel;
+};
+
+// KCalcNumeralSystemView
+class KCalcNumeralSystemView : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit KCalcNumeralSystemView(QWidget *parent = nullptr);
+
+    void setNumber(quint64 number, int base);
+    void clearNumber();
+
+private:
+    void updateLabels();
+
+    KCalcNumeralSystemLabel *m_label1 = nullptr;
+    KCalcNumeralSystemLabel *m_label2 = nullptr;
+    KCalcNumeralSystemLabel *m_label3 = nullptr;
+
+    std::optional<quint64> m_number;
+    int m_base = 10;
+};
+
+#endif // KCALCNUMERALSYSTEMVIEW_H

Places

File 2001-numeral-system-view.patch of Package kcalc (Revision 1318cbb41b2d995f57246929ed4e1b74)

Places