Resolves: tdf#133180 use full width of canvas for preview render

Change-Id: I1fa3f0fd8505712155c72c25b67da1ab6d4753e4
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/94660
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/sfx2/source/dialog/templdlg.cxx b/sfx2/source/dialog/templdlg.cxx
index 2e81c71..cd54f92 100644
--- a/sfx2/source/dialog/templdlg.cxx
+++ b/sfx2/source/dialog/templdlg.cxx
@@ -276,6 +276,7 @@ IMPL_LINK(SfxCommonTemplateDialog_Impl, CustomRenderHdl, weld::TreeView::render_
{
    vcl::RenderContext& rRenderContext = std::get<0>(aPayload);
    const ::tools::Rectangle& rRect = std::get<1>(aPayload);
    ::tools::Rectangle aRect(rRect.TopLeft(), Size(rRenderContext.GetOutputSize().Width() - rRect.Left(), rRect.GetHeight()));
    bool bSelected = std::get<2>(aPayload);
    const OUString& rId = std::get<3>(aPayload);

@@ -299,16 +300,16 @@ IMPL_LINK(SfxCommonTemplateDialog_Impl, CustomRenderHdl, weld::TreeView::render_
        if (pStyleSheet)
        {
            rRenderContext.Push(PushFlags::ALL);
            sal_Int32 nSize = rRect.GetHeight();
            sal_Int32 nSize = aRect.GetHeight();
            std::unique_ptr<sfx2::StylePreviewRenderer> pStylePreviewRenderer(
                pStyleManager->CreateStylePreviewRenderer(rRenderContext, pStyleSheet, nSize));
            bSuccess = pStylePreviewRenderer->recalculate() && pStylePreviewRenderer->render(rRect);
            bSuccess = pStylePreviewRenderer->recalculate() && pStylePreviewRenderer->render(aRect);
            rRenderContext.Pop();
        }
    }

    if (!bSuccess)
        rRenderContext.DrawText(rRect, rId, DrawTextFlags::Left | DrawTextFlags::VCenter);
        rRenderContext.DrawText(aRect, rId, DrawTextFlags::Left | DrawTextFlags::VCenter);

    rRenderContext.Pop();
}