build: migrate to qt 5.15

1 files changed, 118 insertions, 145 deletions

diff --git a/src/widgets/scrolltext/scrolltext.cpp b/src/widgets/scrolltext/scrolltext.cpp
index 00696af..b03b761 100644
--- a/src/widgets/scrolltext/scrolltext.cpp
+++ b/src/widgets/scrolltext/scrolltext.cpp
@@ -1,179 +1,152 @@
 #include "scrolltext.h"
-#include <QPainter>
 #include <QHoverEvent>
+#include <QPainter>
 
-ScrollText::ScrollText(QWidget *parent) :
-    QWidget(parent), scrollPos(0)
-{
+ScrollText::ScrollText(QWidget *parent) : QWidget(parent), scrollPos(0) {
 
-    staticText.setTextFormat(Qt::PlainText);
+  staticText.setTextFormat(Qt::PlainText);
 
-    setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
+  setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 
-    setMinimumHeight(fontMetrics().height()+10);
-    setMaximumHeight(this->minimumHeight()+6);
+  setMinimumHeight(fontMetrics().height() + 10);
+  setMaximumHeight(this->minimumHeight() + 6);
 
-    leftMargin = 0; //height() / 3;
+  leftMargin = 0; // height() / 3;
 
-    setSeparator("        ");
+  setSeparator("        ");
 
-    connect(&timer, SIGNAL(timeout()), this, SLOT(timer_timeout()));
-    timer.setInterval(50);
+  connect(&timer, SIGNAL(timeout()), this, SLOT(timer_timeout()));
+  timer.setInterval(50);
 }
 
-QString ScrollText::text() const
-{
-    return _text;
-}
+QString ScrollText::text() const { return _text; }
 
-void ScrollText::setText(QString text)
-{
-    _text = text;
-    updateText();
-    update();
+void ScrollText::setText(QString text) {
+  _text = text;
+  updateText();
+  update();
 }
 
-QString ScrollText::separator() const
-{
-    return _separator;
-}
-
-void ScrollText::setSeparator(QString separator)
-{
-    _separator = separator;
-    updateText();
-    update();
-}
+QString ScrollText::separator() const { return _separator; }
 
-void ScrollText::setLeftMargin(int pixels)
-{
-    leftMargin = pixels;
-    update();
+void ScrollText::setSeparator(QString separator) {
+  _separator = separator;
+  updateText();
+  update();
 }
 
-void ScrollText::pause()
-{
-    if(scrollEnabled){
-        timer.stop();
-    }
+void ScrollText::setLeftMargin(int pixels) {
+  leftMargin = pixels;
+  update();
 }
 
-void ScrollText::resume()
-{
-    if(scrollEnabled){
-        timer.start();
-        scrolledOnce = false;
-    }
+void ScrollText::pause() {
+  if (scrollEnabled) {
+    timer.stop();
+  }
 }
 
-void ScrollText::updateText()
-{
+void ScrollText::resume() {
+  if (scrollEnabled) {
+    timer.start();
     scrolledOnce = false;
-    timer.stop();
-
-    singleTextWidth = fontMetrics().horizontalAdvance(_text);
-//    scrollEnabled = true;
-      scrollEnabled  = (singleTextWidth > width() - leftMargin);
-
-    if(scrollEnabled)
-    {
-        scrollPos = -64;
-        staticText.setText(_text + _separator);
-        timer.start();
-    }
-    else{
-        staticText.setText(_text);
-    }
-    staticText.prepare(QTransform(), font());
-    //wholeTextSize = QSize(fontMetrics().width(staticText.text()), fontMetrics().height());
-    wholeTextSize = QSize(fontMetrics().horizontalAdvance(staticText.text()), fontMetrics().height());
-
+  }
 }
 
-void ScrollText::paintEvent(QPaintEvent*)
-{
-    QPainter p(this);
-
-    if(scrollEnabled)
-    {
-        buffer.fill(qRgba(0, 0, 0, 0));
-        QPainter pb(&buffer);
-        pb.setPen(p.pen());
-        pb.setFont(p.font());
-
-        int x = qMin(-scrollPos, 0) + leftMargin;
-        while(x < width())
-        {
-            pb.drawStaticText(QPointF(x, (height() - wholeTextSize.height()) / 2) + QPoint(2, 2), staticText);
-            x += wholeTextSize.width();
-        }
-
-        //Apply Alpha Channel
-        pb.setCompositionMode(QPainter::CompositionMode_DestinationIn);
-        pb.setClipRect(width() - 15, 0, 15, height());
-        pb.drawImage(0, 0, alphaChannel);
-        pb.setClipRect(0, 0, 15, height());
-        //initial situation: don't apply alpha channel in the left half of the image at all; apply it more and more until scrollPos gets positive
-        if(scrollPos < 0)
-            pb.setOpacity((qreal)(qMax(-8, scrollPos) + 8) / 8.0);
-        pb.drawImage(0, 0, alphaChannel);
-        p.drawImage(0, 0, buffer);
-    }
-    else
-    {
-        p.drawText(QRectF(0, 0, width(), height()), Qt::AlignCenter, text());
-//      p.drawStaticText(QPointF(leftMargin, (height() - wholeTextSize.height()) / 2), staticText);
-    }
+void ScrollText::updateText() {
+  scrolledOnce = false;
+  timer.stop();
+
+  singleTextWidth = fontMetrics().horizontalAdvance(_text);
+  //    scrollEnabled = true;
+  scrollEnabled = (singleTextWidth > width() - leftMargin);
+
+  if (scrollEnabled) {
+    scrollPos = -64;
+    staticText.setText(_text + _separator);
+    timer.start();
+  } else {
+    staticText.setText(_text);
+  }
+  staticText.prepare(QTransform(), font());
+  // wholeTextSize = QSize(fontMetrics().width(staticText.text()),
+  // fontMetrics().height());
+  wholeTextSize = QSize(fontMetrics().horizontalAdvance(staticText.text()),
+                        fontMetrics().height());
 }
 
-void ScrollText::resizeEvent(QResizeEvent*)
-{
-    //When the widget is resized, we need to update the alpha channel.
-
-    alphaChannel = QImage(size(), QImage::Format_ARGB32_Premultiplied);
-    buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
-
-    //Create Alpha Channel:
-    if(width() > 64)
-    {
-        //create first scanline
-        QRgb* scanline1 = (QRgb*)alphaChannel.scanLine(0);
-        for(int x = 1; x < 16; ++x)
-            scanline1[x - 1] = scanline1[width() - x] = qRgba(0, 0, 0, x << 4);
-        for(int x = 15; x < width() - 15; ++x)
-            scanline1[x] = qRgb(0, 0, 0);
-        //copy scanline to the other ones
-        for(int y = 1; y < height(); ++y)
-            memcpy(alphaChannel.scanLine(y), (uchar*)scanline1, width() * 4);
+void ScrollText::paintEvent(QPaintEvent *) {
+  QPainter p(this);
+
+  if (scrollEnabled) {
+    buffer.fill(qRgba(0, 0, 0, 0));
+    QPainter pb(&buffer);
+    pb.setPen(p.pen());
+    pb.setFont(p.font());
+
+    int x = qMin(-scrollPos, 0) + leftMargin;
+    while (x < width()) {
+      pb.drawStaticText(QPointF(x, (height() - wholeTextSize.height()) / 2) +
+                            QPoint(2, 2),
+                        staticText);
+      x += wholeTextSize.width();
     }
-    else
-        alphaChannel.fill(qRgb(0, 0, 0));
-
 
-    //Update scrolling state
-    bool newScrollEnabled = (singleTextWidth > width() - leftMargin);
-    if(newScrollEnabled != scrollEnabled)
-        updateText();
+    // Apply Alpha Channel
+    pb.setCompositionMode(QPainter::CompositionMode_DestinationIn);
+    pb.setClipRect(width() - 15, 0, 15, height());
+    pb.drawImage(0, 0, alphaChannel);
+    pb.setClipRect(0, 0, 15, height());
+    // initial situation: don't apply alpha channel in the left half of the
+    // image at all; apply it more and more until scrollPos gets positive
+    if (scrollPos < 0)
+      pb.setOpacity((qreal)(qMax(-8, scrollPos) + 8) / 8.0);
+    pb.drawImage(0, 0, alphaChannel);
+    p.drawImage(0, 0, buffer);
+  } else {
+    p.drawText(QRectF(0, 0, width(), height()), Qt::AlignCenter, text());
+    //      p.drawStaticText(QPointF(leftMargin, (height() -
+    //      wholeTextSize.height()) / 2), staticText);
+  }
 }
 
-void ScrollText::timer_timeout()
-{
-    scrollPos = (scrollPos + 2)
-                % wholeTextSize.width();
-    pauseAfterOneRotation(scrollPos);
-    update();
+void ScrollText::resizeEvent(QResizeEvent *) {
+  // When the widget is resized, we need to update the alpha channel.
+
+  alphaChannel = QImage(size(), QImage::Format_ARGB32_Premultiplied);
+  buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
+
+  // Create Alpha Channel:
+  if (width() > 64) {
+    // create first scanline
+    QRgb *scanline1 = (QRgb *)alphaChannel.scanLine(0);
+    for (int x = 1; x < 16; ++x)
+      scanline1[x - 1] = scanline1[width() - x] = qRgba(0, 0, 0, x << 4);
+    for (int x = 15; x < width() - 15; ++x)
+      scanline1[x] = qRgb(0, 0, 0);
+    // copy scanline to the other ones
+    for (int y = 1; y < height(); ++y)
+      memcpy(alphaChannel.scanLine(y), (uchar *)scanline1, width() * 4);
+  } else
+    alphaChannel.fill(qRgb(0, 0, 0));
+
+  // Update scrolling state
+  bool newScrollEnabled = (singleTextWidth > width() - leftMargin);
+  if (newScrollEnabled != scrollEnabled)
+    updateText();
 }
 
-void ScrollText::pauseAfterOneRotation(int scrollPos)
-{
-    if(scrolledOnce == false && scrollPos+2==wholeTextSize.width()){
-        scrolledOnce = true;
-    }
-    if(scrolledOnce){
-        pause();
-    }
+void ScrollText::timer_timeout() {
+  scrollPos = (scrollPos + 2) % wholeTextSize.width();
+  pauseAfterOneRotation(scrollPos);
+  update();
 }
 
-
-
-
+void ScrollText::pauseAfterOneRotation(int scrollPos) {
+  if (scrolledOnce == false && scrollPos + 2 == wholeTextSize.width()) {
+    scrolledOnce = true;
+  }
+  if (scrolledOnce) {
+    pause();
+  }
+}