Refresh pieces bar colors once color scheme is changed

PR #21183.
Closes #21155.

src/gui/properties/downloadedpiecesbar.cpp

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -46,9 +47,9 @@ namespace
 }
 
 DownloadedPiecesBar::DownloadedPiecesBar(QWidget *parent)
-    : base {parent}
+    : base(parent)
-    , m_dlPieceColor {dlPieceColor(pieceColor())}
 {
+    updateColorsImpl();
 }
 
 QList<float> DownloadedPiecesBar::bitfieldToFloatVector(const QBitArray &vecin, int reqSize)
@@ -128,25 +129,24 @@ QList<float> DownloadedPiecesBar::bitfieldToFloatVector(const QBitArray &vecin,
     return result;
 }
 
-bool DownloadedPiecesBar::updateImage(QImage &image)
+QImage DownloadedPiecesBar::renderImage()
 {
     //  qDebug() << "updateImage";
-    QImage image2(width() - 2 * borderWidth, 1, QImage::Format_RGB888);
+    QImage image {width() - 2 * borderWidth, 1, QImage::Format_RGB888};
-    if (image2.isNull())
+    if (image.isNull())
     {
-        qDebug() << "QImage image2() allocation failed, width():" << width();
+        qDebug() << "QImage allocation failed, width():" << width();
-        return false;
+        return image;
     }
 
     if (m_pieces.isEmpty())
     {
-        image2.fill(backgroundColor());
+        image.fill(backgroundColor());
-        image = image2;
+        return image;
-        return true;
     }
 
-    QList<float> scaledPieces = bitfieldToFloatVector(m_pieces, image2.width());
+    QList<float> scaledPieces = bitfieldToFloatVector(m_pieces, image.width());
-    QList<float> scaledPiecesDl = bitfieldToFloatVector(m_downloadedPieces, image2.width());
+    QList<float> scaledPiecesDl = bitfieldToFloatVector(m_downloadedPieces, image.width());
 
     // filling image
     for (int x = 0; x < scaledPieces.size(); ++x)
@@ -161,15 +161,15 @@ bool DownloadedPiecesBar::updateImage(QImage &image)
             QRgb mixedColor = mixTwoColors(pieceColor().rgb(), m_dlPieceColor.rgb(), ratio);
             mixedColor = mixTwoColors(backgroundColor().rgb(), mixedColor, fillRatio);
 
-            image2.setPixel(x, 0, mixedColor);
+            image.setPixel(x, 0, mixedColor);
         }
         else
         {
-            image2.setPixel(x, 0, pieceColors()[piecesToValue * 255]);
+            image.setPixel(x, 0, pieceColors()[piecesToValue * 255]);
         }
     }
-    image = image2;
+
-    return true;
+    return image;
 }
 
 void DownloadedPiecesBar::setProgress(const QBitArray &pieces, const QBitArray &downloadedPieces)
@@ -177,7 +177,7 @@ void DownloadedPiecesBar::setProgress(const QBitArray &pieces, const QBitArray &
     m_pieces = pieces;
     m_downloadedPieces = downloadedPieces;
 
-    requestImageUpdate();
+    redraw();
 }
 
 void DownloadedPiecesBar::clear()
@@ -198,3 +198,14 @@ QString DownloadedPiecesBar::simpleToolTipText() const
            + u"</table>";
 
 }
+
+void DownloadedPiecesBar::updateColors()
+{
+    PiecesBar::updateColors();
+    updateColorsImpl();
+}
+
+void DownloadedPiecesBar::updateColorsImpl()
+{
+    m_dlPieceColor = dlPieceColor(pieceColor());
+}

src/gui/properties/downloadedpiecesbar.h

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -52,11 +53,13 @@ public:
 private:
     // scale bitfield vector to float vector
     QList<float> bitfieldToFloatVector(const QBitArray &vecin, int reqSize);
-    bool updateImage(QImage &image) override;
+    QImage renderImage() override;
     QString simpleToolTipText() const override;
+    void updateColors() override;
+    void updateColorsImpl();
 
     // incomplete piece color
-    const QColor m_dlPieceColor;
+    QColor m_dlPieceColor;
     // last used bitfields, uses to better resize redraw
     // TODO: make a diff pieces to new pieces and update only changed pixels, speedup when update > 20x faster
     QBitArray m_pieces;

src/gui/properties/pieceavailabilitybar.cpp

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -126,39 +127,38 @@ QList<float> PieceAvailabilityBar::intToFloatVector(const QList<int> &vecin, int
     return result;
 }
 
-bool PieceAvailabilityBar::updateImage(QImage &image)
+QImage PieceAvailabilityBar::renderImage()
 {
-    QImage image2(width() - 2 * borderWidth, 1, QImage::Format_RGB888);
+    QImage image {width() - 2 * borderWidth, 1, QImage::Format_RGB888};
-    if (image2.isNull())
+    if (image.isNull())
     {
-        qDebug() << "QImage image2() allocation failed, width():" << width();
+        qDebug() << "QImage allocation failed, width():" << width();
-        return false;
+        return image;
     }
 
     if (m_pieces.empty())
     {
-        image2.fill(backgroundColor());
+        image.fill(backgroundColor());
-        image = image2;
+        return image;
-        return true;
     }
 
-    QList<float> scaledPieces = intToFloatVector(m_pieces, image2.width());
+    QList<float> scaledPieces = intToFloatVector(m_pieces, image.width());
 
     // filling image
     for (int x = 0; x < scaledPieces.size(); ++x)
     {
         float piecesToValue = scaledPieces.at(x);
-        image2.setPixel(x, 0, pieceColors()[piecesToValue * 255]);
+        image.setPixel(x, 0, pieceColors()[piecesToValue * 255]);
     }
-    image = image2;
+
-    return true;
+    return image;
 }
 
 void PieceAvailabilityBar::setAvailability(const QList<int> &avail)
 {
     m_pieces = avail;
 
-    requestImageUpdate();
+    redraw();
 }
 
 void PieceAvailabilityBar::clear()

src/gui/properties/pieceavailabilitybar.h

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -46,7 +47,7 @@ public:
     void clear() override;
 
 private:
-    bool updateImage(QImage &image) override;
+    QImage renderImage() override;
     QString simpleToolTipText() const override;
 
     // last used int vector, uses to better resize redraw

src/gui/properties/piecesbar.cpp

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2016  Eugene Shalygin
  * Copyright (C) 2006  Christophe Dumez
  *
@@ -41,6 +42,7 @@
 #include "base/indexrange.h"
 #include "base/path.h"
 #include "base/utils/misc.h"
+#include "gui/uithememanager.h"
 
 namespace
 {
@@ -114,10 +116,16 @@ namespace
 }
 
 PiecesBar::PiecesBar(QWidget *parent)
-    : QWidget {parent}
+    : QWidget(parent)
 {
-    updatePieceColors();
     setMouseTracking(true);
+
+    updateColorsImpl();
+    connect(UIThemeManager::instance(), &UIThemeManager::themeChanged, this, [this]
+    {
+        updateColors();
+        redraw();
+    });
 }
 
 void PiecesBar::setTorrent(const BitTorrent::Torrent *torrent)
@@ -154,7 +162,7 @@ void PiecesBar::leaveEvent(QEvent *e)
 {
     m_hovered = false;
     m_highlightedRegion = {};
-    requestImageUpdate();
+    redraw();
     base::leaveEvent(e);
 }
 
@@ -178,7 +186,10 @@ void PiecesBar::paintEvent(QPaintEvent *)
     else
     {
         if (m_image.width() != imageRect.width())
-            updateImage(m_image);
+        {
+            if (const QImage image = renderImage(); !image.isNull())
+                m_image = image;
+        }
         painter.drawImage(imageRect, m_image);
     }
 
@@ -196,30 +207,33 @@ void PiecesBar::paintEvent(QPaintEvent *)
     painter.drawPath(border);
 }
 
-void PiecesBar::requestImageUpdate()
+void PiecesBar::redraw()
 {
-    if (updateImage(m_image))
+    if (const QImage image = renderImage(); !image.isNull())
+    {
+        m_image = image;
         update();
+    }
 }
 
 QColor PiecesBar::backgroundColor() const
 {
-    return palette().color(QPalette::Base);
+    return palette().color(QPalette::Active, QPalette::Base);
 }
 
 QColor PiecesBar::borderColor() const
 {
-    return palette().color(QPalette::Dark);
+    return palette().color(QPalette::Active, QPalette::Dark);
 }
 
 QColor PiecesBar::pieceColor() const
 {
-    return palette().color(QPalette::Highlight);
+    return palette().color(QPalette::Active, QPalette::Highlight);
 }
 
 QColor PiecesBar::colorBoxBorderColor() const
 {
-    return palette().color(QPalette::ToolTipText);
+    return palette().color(QPalette::Active, QPalette::ToolTipText);
 }
 
 const QList<QRgb> &PiecesBar::pieceColors() const
@@ -325,12 +339,17 @@ void PiecesBar::highlightFile(int imagePos)
     }
 }
 
-void PiecesBar::updatePieceColors()
+void PiecesBar::updateColors()
+{
+    updateColorsImpl();
+}
+
+void PiecesBar::updateColorsImpl()
 {
     m_pieceColors = QList<QRgb>(256);
     for (int i = 0; i < 256; ++i)
     {
-        float ratio = (i / 255.0);
+        const float ratio = (i / 255.0);
         m_pieceColors[i] = mixTwoColors(backgroundColor().rgb(), pieceColor().rgb(), ratio);
     }
 }

src/gui/properties/piecesbar.h

@@ -1,5 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2016  Eugene Shalygin
  * Copyright (C) 2006  Christophe Dumez
  *
@@ -54,17 +55,15 @@ public:
 
     virtual void clear();
 
-    // QObject interface
-    bool event(QEvent *e) override;
-
 protected:
-    // QWidget interface
+    bool event(QEvent *e) override;
     void enterEvent(QEnterEvent *e) override;
     void leaveEvent(QEvent *e) override;
     void mouseMoveEvent(QMouseEvent *e) override;
-
     void paintEvent(QPaintEvent *e) override;
-    void requestImageUpdate();
+
+    virtual void updateColors();
+    void redraw();
 
     QColor backgroundColor() const;
     QColor borderColor() const;
@@ -82,11 +81,9 @@ private:
     void highlightFile(int imagePos);
 
     virtual QString simpleToolTipText() const = 0;
+    virtual QImage renderImage() = 0;
 
-    // draw new image to replace the actual image
+    void updateColorsImpl();
-    // returns true if image was successfully updated
-    virtual bool updateImage(QImage &image) = 0;
-    void updatePieceColors();
 
     const BitTorrent::Torrent *m_torrent = nullptr;
     QImage m_image;