1、设置内容组件
void PropertyPanel::init() { messageWhenEmpty = TRANS("(nothing selected)"); addAndMakeVisible (viewport); viewport.setViewedComponent (propertyHolderComponent = new PropertyHolderComponent()); viewport.setFocusContainer (true); }
2、设置大小
void PropertyPanel::resized() { viewport.setBounds (getLocalBounds()); updatePropHolderLayout(); }
3、布局内容。
void PropertyPanel::updatePropHolderLayout() const { const int maxWidth = viewport.getMaximumVisibleWidth(); propertyHolderComponent->updateLayout (maxWidth); const int newMaxWidth = viewport.getMaximumVisibleWidth(); if (maxWidth != newMaxWidth) { // need to do this twice because of scrollbars changing the size, etc. propertyHolderComponent->updateLayout (newMaxWidth); } }
具体原理还是没如何弄明白,应当是监听了子控件的大小变化。
时间: 2024-10-16 20:34:06