Qt Gui Update: rtknavi_qt

- scale solution text with window size
- make graph rendering use anti-aliasing
- i18n work
- combine some redundant code
- fix some label texts

app/qtapp/appcmn_qt/labelstretcher.cpp

@@ -0,0 +1,121 @@
+#include "labelstretcher.h"
+
+// https://github.com/KubaO/stackoverflown/tree/master/questions/label-text-size-vert-40861305
+// adapted by Jens Reimann to support vertical streching of widgets
+#include <QWidget>
+#include <QEvent>
+#include <QLayout>
+
+LabelStretcher::LabelStretcher(QObject *parent) : QObject(parent) {
+    apply(qobject_cast<QWidget*>(parent));
+}
+
+void LabelStretcher::apply(QWidget *widget) {
+    if (!widget) return;
+    setManaged(widget);
+    setMinimumSize(widget);
+    widget->installEventFilter(this);
+}
+
+void LabelStretcher::setManaged(QWidget *w, bool managed) {
+    w->setProperty(kStretcherManaged, managed);
+}
+
+bool LabelStretcher::eventFilter(QObject * obj, QEvent * ev) {
+    auto widget = qobject_cast<QWidget*>(obj);
+
+    if (widget && ev->type() == QEvent::Resize)
+        resized(widget);
+
+    return false;
+}
+
+void LabelStretcher::onLayout(QLayout *layout, const std::function<void(QWidget*)> &onWidget) {
+    if (!layout) return;
+
+    auto N = layout->count();
+    for (int i = 0; i < N; ++i) {
+        auto item = layout->itemAt(i);
+        onWidget(item->widget());
+        onLayout(item->layout(), onWidget);
+    }
+}
+
+void LabelStretcher::setFont(QLayout *layout, const QFont &font) {
+    onLayout(layout, [&](QWidget *widget){ setFont(widget, font); });
+}
+
+void LabelStretcher::setFont(QWidget *widget, const QFont &font) {
+    if (!widget || !widget->property(kStretcherManaged).toBool())
+        return;
+
+    float scale = 1;
+    if (widget->sizePolicy().verticalStretch() != 0) {
+        scale = (double)widget->sizePolicy().verticalStretch()/10.;
+    }
+
+    QFont f(font);
+    f.setPointSizeF(font.pointSizeF()*scale*0.5);
+
+    widget->setFont(f);
+    setFont(widget->layout(), font);
+}
+
+void LabelStretcher::setMinimumSize(QWidget *widget) {
+    if (widget->layout())
+        return;
+    widget->setMinimumSize(widget->minimumSizeHint());
+}
+
+int LabelStretcher::dSize(const QSizeF & inner, const QSizeF & outer) {
+    auto dy = inner.height() - outer.height();
+    auto dx = inner.width() - outer.width();
+    return std::max(dx, dy);
+}
+
+qreal LabelStretcher::f(qreal fontSize, QWidget *widget) {
+    auto font = widget->font();
+    font.setPointSizeF(fontSize);
+    setFont(widget, font);
+    auto d = dSize(widget->sizeHint(), widget->size());
+    qDebug() << "f:" << fontSize << "d" << d;
+    return d;
+}
+
+qreal LabelStretcher::df(qreal fontSize, qreal dStep, QWidget *widget) {
+    fontSize = std::max(dStep + 1.0, fontSize);
+    return (f(fontSize + dStep, widget) - f(fontSize - dStep, widget)) / dStep;
+}
+
+void LabelStretcher::resized(QWidget *widget) {
+    qDebug() << "pre: " << widget->minimumSizeHint() << widget->sizeHint() << widget->size();
+    if (!widget->property(kMinimumsAcquired).toBool()) {
+        onLayout(widget->layout(), [=](QWidget *widget){ setMinimumSize(widget); });
+        widget->setProperty(kMinimumsAcquired, true);
+    }
+
+    // Newton's method
+    auto font = widget->font();
+    auto fontSize = font.pointSizeF();
+    qreal dStep = 1.0;
+    int i;
+    for (i = 0; i < 10; ++i) {
+        auto prevFontSize = fontSize;
+        auto d = df(fontSize, dStep, widget);
+        if (d == 0) {
+            dStep *= 2.0;
+            continue;
+        }
+        fontSize -= f(fontSize, widget)/d;
+        fontSize = std::max(dStep + 1.0, fontSize);
+        auto change = fabs(prevFontSize - fontSize)/fontSize;
+        qDebug() << "d:" << d << " delta" << change;
+        if (change < 0.01) break; // we're within 1% of target
+    }
+    font.setPointSizeF(fontSize);  // use a font smaller than max
+    setFont(widget, font);
+    qDebug() << "post:" << i << widget->minimumSizeHint() << widget->sizeHint() << widget->size();
+}
+
+constexpr const char LabelStretcher::kMinimumsAcquired[];
+constexpr const char LabelStretcher::kStretcherManaged[];

app/qtapp/appcmn_qt/labelstretcher.h

@@ -0,0 +1,31 @@
+#ifndef LABELSTRETCHER_H
+#define LABELSTRETCHER_H
+
+#include <QObject>
+
+class QLayout;
+
+class LabelStretcher : public QObject {
+    Q_OBJECT
+    static constexpr const char kMinimumsAcquired[] = "ls_minimumsAcquired";
+    static constexpr const char kStretcherManaged[] = "ls_stretcherManaged";
+public:
+    LabelStretcher(QObject *parent = 0);
+    void apply(QWidget *widget);
+    void setManaged(QWidget *w, bool managed = true);
+    void resized(QWidget *widget);
+
+protected:
+    bool eventFilter(QObject * obj, QEvent * ev) override;
+
+private:
+    void onLayout(QLayout *layout, const std::function<void(QWidget*)> &onWidget);
+    void setFont(QLayout *layout, const QFont &font);
+    void setFont(QWidget *widget, const QFont &font);
+    void setMinimumSize(QWidget *widget);
+    static int dSize(const QSizeF & inner, const QSizeF & outer);
+    qreal f(qreal fontSize, QWidget *widget);
+    qreal df(qreal fontSize, qreal dStep, QWidget *widget);
+};
+
+#endif // LABELSTRETCHER_H

app/qtapp/rtknavi_qt/instrdlg.cpp

@@ -557,7 +557,7 @@ void InputStrDialog::showFtpOptionsDialog(int index, int opt)
 //---------------------------------------------------------------------------
 void InputStrDialog::updateEnable()
 {
-    // (cBStream->currentIndex() == 4) -> Ffile stream
+    // (cBStream->currentIndex() == 4) -> File stream
     int enaFile = (ui->cBStreamC1->isChecked() && (ui->cBStream1->currentIndex() == 4)) ||
                   (ui->cBStreamC2->isChecked() && (ui->cBStream2->currentIndex() == 4)) ||
                   (ui->cBStreamC3->isChecked() && (ui->cBStream3->currentIndex() == 4));

app/qtapp/rtknavi_qt/markdlg.cpp

@@ -16,7 +16,7 @@ MarkDialog::MarkDialog(QWidget *parent)
     ui->setupUi(this);
 
     nMark = 1;
-    ui->lblMarker->setText(QString("%r=%1").arg(nMark, 3, 10, QLatin1Char('0')));
+    ui->lblMarker->setText(QStringLiteral("%r=%1").arg(nMark, 3, 10, QLatin1Char('0')));
 
     connect(ui->btnKeyDlg, &QPushButton::clicked, this, &MarkDialog::showKeyDialog);
     connect(ui->buttonBox, &QDialogButtonBox::accepted, this, &MarkDialog::accept);
@@ -34,7 +34,7 @@ void MarkDialog::accept()
 {
     if (ui->cBMarkerNameC->isChecked()) {
         nMark++;
-        ui->lblMarker->setText(QString("%r=%1").arg(nMark, 3, 10, QLatin1Char('0')));
+        ui->lblMarker->setText(QStringLiteral("%r=%1").arg(nMark, 3, 10, QLatin1Char('0')));
     }
 
     QDialog::accept();