Method ResizeWebView

SampleApps/WebView2APISample/ViewComponent.cpp:574–616

[ResizeWebView] Update the bounds of the WebView window to fit available space.

//! [ResizeWebView]
// Update the bounds of the WebView window to fit available space.
void ViewComponent::ResizeWebView()
{
    SIZE webViewSize = {
            LONG((m_webViewBounds.right - m_webViewBounds.left) * m_webViewRatio * m_webViewScale),
            LONG((m_webViewBounds.bottom - m_webViewBounds.top) * m_webViewRatio * m_webViewScale) };

    RECT desiredBounds = m_webViewBounds;
    desiredBounds.bottom = LONG(
        webViewSize.cy + m_webViewBounds.top);
    desiredBounds.right = LONG(
        webViewSize.cx + m_webViewBounds.left);

    m_controller->put_Bounds(desiredBounds);
    if (m_compositionController)
    {
        POINT webViewOffset = {m_webViewBounds.left, m_webViewBounds.top};

        if (m_dcompDevice)
        {
            CHECK_FAILURE(m_dcompRootVisual->SetOffsetX(float(webViewOffset.x)));
            CHECK_FAILURE(m_dcompRootVisual->SetOffsetY(float(webViewOffset.y)));
            CHECK_FAILURE(m_dcompRootVisual->SetClip(
                {0, 0, float(webViewSize.cx), float(webViewSize.cy)}));
            CHECK_FAILURE(m_dcompDevice->Commit());
        }
        else if (m_wincompCompositor)
        {
            if (m_wincompRootVisual != nullptr)
            {
                numerics::float2 size = {static_cast<float>(webViewSize.cx),
                                         static_cast<float>(webViewSize.cy)};
                m_wincompRootVisual.Size(size);

                numerics::float3 offset = {static_cast<float>(webViewOffset.x),
                                           static_cast<float>(webViewOffset.y), 0.0f};
                m_wincompRootVisual.Offset(offset);

                winrtComp::IInsetClip insetClip = m_wincompCompositor.CreateInsetClip();
                m_wincompRootVisual.Clip(insetClip.as<winrtComp::CompositionClip>());
            }
        }
    }
}
//! [ResizeWebView]

// Show the current bounds of the WebView.