1 files changed, 153 insertions, 0 deletions
diff --git a/vcl/headless/svpvd.cxx b/vcl/headless/svpvd.cxx
new file mode 100644
index 000000000..162bd78ec
--- /dev/null
+++ b/vcl/headless/svpvd.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef IOS
+
+#include <headless/svpbmp.hxx>
+#include <headless/svpinst.hxx>
+#include <headless/svpvd.hxx>
+#include <headless/svpgdi.hxx>
+
+#include <basegfx/vector/b2ivector.hxx>
+#include <comphelper/lok.hxx>
+
+#include <cairo.h>
+
+using namespace basegfx;
+
+SvpSalVirtualDevice::SvpSalVirtualDevice(cairo_surface_t* pRefSurface, cairo_surface_t* pPreExistingTarget)
+    : m_pRefSurface(pRefSurface)
+    , m_pSurface(pPreExistingTarget)
+    , m_bOwnsSurface(!pPreExistingTarget)
+{
+    cairo_surface_reference(m_pRefSurface);
+}
+
+SvpSalVirtualDevice::~SvpSalVirtualDevice()
+{
+    if (m_bOwnsSurface)
+        cairo_surface_destroy(m_pSurface);
+    cairo_surface_destroy(m_pRefSurface);
+}
+
+SvpSalGraphics* SvpSalVirtualDevice::AddGraphics(SvpSalGraphics* pGraphics)
+{
+    pGraphics->setSurface(m_pSurface, m_aFrameSize);
+    m_aGraphics.push_back(pGraphics);
+    return pGraphics;
+}
+
+SalGraphics* SvpSalVirtualDevice::AcquireGraphics()
+{
+    return AddGraphics(new SvpSalGraphics());
+}
+
+void SvpSalVirtualDevice::ReleaseGraphics( SalGraphics* pGraphics )
+{
+    m_aGraphics.erase(std::remove(m_aGraphics.begin(), m_aGraphics.end(), dynamic_cast<SvpSalGraphics*>(pGraphics)), m_aGraphics.end());
+    delete pGraphics;
+}
+
+bool SvpSalVirtualDevice::SetSize( tools::Long nNewDX, tools::Long nNewDY )
+{
+    return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr);
+}
+
+void SvpSalVirtualDevice::CreateSurface(tools::Long nNewDX, tools::Long nNewDY, sal_uInt8 *const pBuffer)
+{
+    if (m_pSurface)
+    {
+        cairo_surface_destroy(m_pSurface);
+    }
+
+    if (pBuffer)
+    {
+        // The buffer should only be set by VirtualDevice::SetOutputSizePixelScaleOffsetAndLOKBuffer()
+        // when used to draw a tile for LOK. It cannot be used for something else, because otherwise
+        // this would need a way to detect whether this is a tiled paint that needs LOK handling
+        // or whether it's that something else that just might happen to be called with LOK active.
+        assert(comphelper::LibreOfficeKit::isActive());
+        // Force scaling of the painting
+        double fScale = comphelper::LibreOfficeKit::getDPIScale();
+
+        m_pSurface = cairo_image_surface_create_for_data(pBuffer, CAIRO_FORMAT_ARGB32,
+                            nNewDX, nNewDY, cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, nNewDX));
+        dl_cairo_surface_set_device_scale(m_pSurface, fScale, fScale);
+    }
+    else if(nNewDX <= 32 && nNewDY <= 32)
+    {
+        double fXScale, fYScale;
+        dl_cairo_surface_get_device_scale(m_pRefSurface, &fXScale, &fYScale);
+        nNewDX *= fXScale;
+        nNewDY *= fYScale;
+
+        // Force image-based surface if small. Small VirtualDevice instances are often used for small
+        // temporary bitmaps that will eventually have GetBitmap() called on them, which would cause
+        // X Server roundtrip with Xlib-based surface, which may be way more costly than doing the drawing
+        // in software (which should be fairly cheap for small surfaces anyway).
+        m_pSurface = cairo_surface_create_similar_image(m_pRefSurface, CAIRO_FORMAT_ARGB32, nNewDX, nNewDY);
+        dl_cairo_surface_set_device_scale(m_pSurface, fXScale, fYScale);
+    }
+    else
+    {
+        m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_COLOR_ALPHA, nNewDX, nNewDY);
+        // Device scale is inherited in this case.
+    }
+
+    SAL_WARN_IF(cairo_surface_status(m_pSurface) != CAIRO_STATUS_SUCCESS, "vcl", "surface of size " << nNewDX << " by " << nNewDY << " creation failed with status of: " << cairo_status_to_string(cairo_surface_status(m_pSurface)));
+}
+
+bool SvpSalVirtualDevice::SetSizeUsingBuffer( tools::Long nNewDX, tools::Long nNewDY,
+        sal_uInt8 *const pBuffer)
+{
+    if (nNewDX == 0)
+        nNewDX = 1;
+    if (nNewDY == 0)
+        nNewDY = 1;
+
+    if (!m_pSurface || m_aFrameSize.getX() != nNewDX ||
+                       m_aFrameSize.getY() != nNewDY)
+    {
+        m_aFrameSize = basegfx::B2IVector(nNewDX, nNewDY);
+
+        if (m_bOwnsSurface)
+            CreateSurface(nNewDX, nNewDY, pBuffer);
+
+        assert(m_pSurface);
+
+        // update device in existing graphics
+        for (auto const& graphic : m_aGraphics)
+            graphic->setSurface(m_pSurface, m_aFrameSize);
+    }
+    return true;
+}
+
+tools::Long SvpSalVirtualDevice::GetWidth() const
+{
+    return m_pSurface ? m_aFrameSize.getX() : 0;
+}
+
+tools::Long SvpSalVirtualDevice::GetHeight() const
+{
+    return m_pSurface ? m_aFrameSize.getY() : 0;
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */