如何在QSlider中设置手柄的大小?



我正在尝试向QSlider添加一些样式,我想使用自定义图像作为用户来回拖动的手柄。 虽然我已经弄清楚如何使用样式表在手柄应该在的位置绘制自定义图标,但图像绘制得太小了,我无法弄清楚如何使其变大。

设置宽度和高度似乎没有任何作用。 我尝试使用图像、边框图像和背景图像,但没有一个让我能够设置手柄图像的大小。 有谁知道如何做到这一点?

这是我在QtDesigner中添加到QSlider中的样式表:

QSlider::handle:vertical {
image: url(:/data/icons/mixer-slider-handle.svg);
width:64px;
height:64px;
}

这是 SVG:

<svg
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
width="30"
height="45"
viewBox="0 0 7.9374997 11.90625"
version="1.1"
id="svg8"
>
<defs
id="defs2">
<linearGradient
id="linearGradient844"
inkscape:collect="always">
<stop
id="stop840"
offset="0"
style="stop-color:#cecece;stop-opacity:1;" />
<stop
id="stop842"
offset="1"
style="stop-color:#ffffff;stop-opacity:1" />
</linearGradient>
<linearGradient
inkscape:collect="always"
id="linearGradient824">
<stop
style="stop-color:#cecece;stop-opacity:1;"
offset="0"
id="stop820" />
<stop
style="stop-color:#ffffff;stop-opacity:1"
offset="1"
id="stop822" />
</linearGradient>
<linearGradient
inkscape:collect="always"
xlink:href="#linearGradient824"
id="linearGradient826"
x1="-3.9103179"
y1="297.24557"
x2="-3.8304768"
y2="285.38882"
gradientUnits="userSpaceOnUse"
gradientTransform="matrix(0.8683302,0,0,0.96503255,7.3827223,9.9179025)" />
<linearGradient
inkscape:collect="always"
xlink:href="#linearGradient844"
id="linearGradient838"
gradientUnits="userSpaceOnUse"
gradientTransform="matrix(0.86322913,0,0,0.81935486,7.5301966,52.317886)"
x1="-3.8119318"
y1="285.99686"
x2="-3.7885454"
y2="296.82458" />
</defs>
<g
inkscape:label="Layer 1"
inkscape:groupmode="layer"
id="layer1"
transform="translate(0,-285.09375)">
<rect
style="fill:url(#linearGradient826);fill-opacity:1;stroke:#0e0e0e;stroke-width:0.1373108;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
id="rect818"
width="5.157938"
height="11.397007"
x="1.453124"
y="285.36124"
ry="2.866178" />
<rect
style="opacity:1;fill:url(#linearGradient838);fill-opacity:1;stroke:none;stroke-width:0.12615089;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
id="rect828"
width="4.6027613"
height="8.9100981"
x="1.7161824"
y="286.60291"
ry="2.184411" />
<path
style="fill:none;stroke:#000000;stroke-width:0.24780074px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
d="m 1.8804469,291.0695 4.3266789,0.047"
id="path846"
inkscape:connector-curvature="0" />
</g>
</svg>

看起来答案是设置凹槽和手柄的边距属性,以反映您正在使用的手柄的大小。

这对我有用:

.QSlider::groove:vertical {
border: 1px solid #111;
background-color: #333;
width: 6px;
margin: 24px 12px;
}
.QSlider::handle:vertical {
image: url(:/data/icons/mixer-slider-handle.svg);
margin: -24px -12px;
height: -30px;
}

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