58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/*
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nanogui/stackedwidget.cpp -- Widget used to stack widgets on top
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of each other. Only the active widget is visible.
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The stacked widget was contributed by Stefan Ivanov.
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NanoGUI was developed by Wenzel Jakob <wenzel.jakob@epfl.ch>.
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The widget drawing code is based on the NanoVG demo application
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by Mikko Mononen.
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All rights reserved. Use of this source code is governed by a
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BSD-style license that can be found in the LICENSE.txt file.
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*/
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#include <nanogui/stackedwidget.h>
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NAMESPACE_BEGIN(nanogui)
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StackedWidget::StackedWidget(nanogui::Widget *parent)
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: Widget(parent) { }
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void StackedWidget::setSelectedIndex(int index) {
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assert(index < childCount());
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if (mSelectedIndex >= 0)
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mChildren[mSelectedIndex]->setVisible(false);
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mSelectedIndex = index;
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mChildren[mSelectedIndex]->setVisible(true);
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}
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int StackedWidget::selectedIndex() const {
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return mSelectedIndex;
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}
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void StackedWidget::performLayout(NVGcontext *ctx) {
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for (auto child : mChildren) {
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child->setPosition(Vector2i::Zero());
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child->setSize(mSize);
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child->performLayout(ctx);
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}
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}
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Vector2i StackedWidget::preferredSize(NVGcontext *ctx) const {
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Vector2i size = Vector2i::Zero();
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for (auto child : mChildren)
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size = size.cwiseMax(child->preferredSize(ctx));
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return size;
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}
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void StackedWidget::addChild(int index, Widget *widget) {
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if (mSelectedIndex >= 0)
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mChildren[mSelectedIndex]->setVisible(false);
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Widget::addChild(index, widget);
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widget->setVisible(true);
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setSelectedIndex(index);
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}
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NAMESPACE_END(nanogui)
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