Remove the dead drawShadePanel in qwasmcompositor

The method is not used anywhere. Remove it to save tens of LOCs.

Change-Id: Id853d12d238aa30eb197ab3fed7ccc24a2213e31
Pick-to: 6.4
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>

src/plugins/platforms/wasm/qwasmcompositor.cpp

@@ -672,78 +672,6 @@ void QWasmCompositor::drawTitlebarWindow(QWasmTitleBarOptions tb, QPainter *pain
     }
 }
 
-void QWasmCompositor::drawShadePanel(QWasmTitleBarOptions options, QPainter *painter)
-{
-    int lineWidth = 1;
-    QPalette palette = options.palette;
-    const QBrush *fill = &options.palette.brush(QPalette::Button);
-
-    int x = options.rect.x();
-    int y = options.rect.y();
-    int w = options.rect.width();
-    int h = options.rect.height();
-
-    const qreal devicePixelRatio = painter->device()->devicePixelRatio();
-    if (!qFuzzyCompare(devicePixelRatio, qreal(1))) {
-        const qreal inverseScale = qreal(1) / devicePixelRatio;
-        painter->scale(inverseScale, inverseScale);
-
-        x = qRound(devicePixelRatio * x);
-        y = qRound(devicePixelRatio * y);
-        w = qRound(devicePixelRatio * w);
-        h = qRound(devicePixelRatio * h);
-        lineWidth = qRound(devicePixelRatio * lineWidth);
-    }
-
-    QColor shade = palette.dark().color();
-    QColor light = palette.light().color();
-
-    if (fill) {
-        if (fill->color() == shade)
-            shade = palette.shadow().color();
-        if (fill->color() == light)
-            light = palette.midlight().color();
-    }
-    QPen oldPen = painter->pen();
-    QList<QLineF> lines;
-    lines.reserve(2*lineWidth);
-
-    painter->setPen(light);
-    int x1, y1, x2, y2;
-    int i;
-    x1 = x;
-    y1 = y2 = y;
-    x2 = x + w - 2;
-    for (i = 0; i < lineWidth; i++)                // top shadow
-        lines << QLineF(x1, y1++, x2--, y2++);
-
-    x2 = x1;
-    y1 = y + h - 2;
-    for (i = 0; i < lineWidth; i++)               // left shado
-        lines << QLineF(x1++, y1, x2++, y2--);
-
-    painter->drawLines(lines);
-    lines.clear();
-    painter->setPen(shade);
-    x1 = x;
-    y1 = y2 = y+h-1;
-    x2 = x+w-1;
-    for (i=0; i<lineWidth; i++) {                // bottom shadow
-        lines << QLineF(x1++, y1--, x2, y2--);
-    }
-    x1 = x2;
-    y1 = y;
-    y2 = y + h - lineWidth - 1;
-    for (i = 0; i < lineWidth; i++)                // right shadow
-        lines << QLineF(x1--, y1++, x2--, y2);
-
-    painter->drawLines(lines);
-    if (fill)                                // fill with fill color
-        painter->fillRect(x+lineWidth, y+lineWidth, w-lineWidth*2, h-lineWidth*2, *fill);
-    painter->setPen(oldPen);                        // restore pen
-
-}
-
 void QWasmCompositor::drawWindow(QOpenGLTextureBlitter *blitter, QWasmScreen *screen,
                                  const QWasmWindow *window)
 {

src/plugins/platforms/wasm/qwasmcompositor.h

@@ -189,7 +189,6 @@ private:
 
     void drawFrameWindow(QWasmFrameOptions options, QPainter *painter);
     void drawTitlebarWindow(QWasmTitleBarOptions options, QPainter *painter);
-    void drawShadePanel(QWasmTitleBarOptions options, QPainter *painter);
     void drawItemPixmap(QPainter *painter, const QRect &rect,
                                     int alignment, const QPixmap &pixmap) const;