support to load SVG images when loading from Image resource

Change-Id: Ieda1c334d8d995c774381c52fa1d9aa11751c5ef

1 files changed, 95 insertions, 0 deletions

diff --git a/vcl/source/bitmap/BitmapTools.cxx b/vcl/source/bitmap/BitmapTools.cxx
new file mode 100644
index 000000000000..c65376ac149e
--- /dev/null
+++ b/vcl/source/bitmap/BitmapTools.cxx
@@ -0,0 +1,95 @@
+/* -*- 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/.
+ *
+ */
+
+#include <vcl/BitmapTools.hxx>
+
+#include <comphelper/processfactory.hxx>
+#include <comphelper/seqstream.hxx>
+#include <vcl/canvastools.hxx>
+
+#include <com/sun/star/graphic/SvgTools.hpp>
+#include <com/sun/star/graphic/Primitive2DTools.hpp>
+
+#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
+
+#include <com/sun/star/rendering/XIntegerReadOnlyBitmap.hpp>
+
+using namespace css;
+
+using drawinglayer::primitive2d::Primitive2DSequence;
+using drawinglayer::primitive2d::Primitive2DReference;
+
+namespace vcl
+{
+
+void BitmapTools::loadFromSvg(SvStream& rStream, const OUString& sPath, BitmapEx& rBitmapEx, double fScalingFactor, const Size& aSize)
+{
+    uno::Reference<uno::XComponentContext> xContext(comphelper::getProcessComponentContext());
+    const uno::Reference<graphic::XSvgParser> xSvgParser = graphic::SvgTools::create(xContext);
+
+    sal_Size nSize = rStream.remainingSize();
+    std::vector<sal_Int8> pBuffer(nSize + 1);
+    rStream.Read(pBuffer.data(), nSize);
+    pBuffer[nSize] = 0;
+
+    uno::Sequence<sal_Int8> aData(pBuffer.data(), nSize + 1);
+    uno::Reference<io::XInputStream> aInputStream(new comphelper::SequenceInputStream(aData));
+
+    Primitive2DSequence aPrimitiveSequence = xSvgParser->getDecomposition(aInputStream, sPath);
+
+    if (aPrimitiveSequence.hasElements())
+    {
+        uno::Sequence<beans::PropertyValue> aViewParameters;
+
+        const sal_Int32 nCount(aPrimitiveSequence.getLength());
+        geometry::RealRectangle2D aRealRect;
+        basegfx::B2DRange aRange;
+        for (sal_Int32 a = 0L; a < nCount; ++a)
+        {
+            const Primitive2DReference xReference(aPrimitiveSequence[a]);
+
+            if (xReference.is())
+            {
+                aRealRect = xReference->getRange(aViewParameters);
+                aRange.expand(basegfx::B2DRange(aRealRect.X1, aRealRect.Y1, aRealRect.X2, aRealRect.Y2));
+            }
+        }
+
+        bool bIsSizeEmpty = (aSize.Width() == 0 && aSize.Height() == 0);
+
+        aRealRect.X1 = 0;
+        aRealRect.Y1 = 0;
+        aRealRect.X2 = bIsSizeEmpty ? (aSize.Width() * 2540 / 90)  : aRange.getMaxX() - aRange.getMinX();
+        aRealRect.Y2 = bIsSizeEmpty ? (aSize.Height() * 2540 / 90) : aRange.getMaxY() - aRange.getMinY();
+
+        double nDPI = 90 * fScalingFactor;
+
+        const css::uno::Reference<css::graphic::XPrimitive2DRenderer> xPrimitive2DRenderer = css::graphic::Primitive2DTools::create(xContext);
+        const css::uno::Reference<css::rendering::XBitmap> xBitmap(
+            xPrimitive2DRenderer->rasterize(aPrimitiveSequence, aViewParameters, nDPI, nDPI, aRealRect, 256*256));
+
+        printf("%f %f %f %f\n", aRealRect.X1, aRealRect.Y1, aRealRect.X2, aRealRect.Y2);
+
+        if (xBitmap.is())
+        {
+            const css::uno::Reference<css::rendering::XIntegerReadOnlyBitmap> xIntBmp(xBitmap, uno::UNO_QUERY_THROW);
+
+            if (xIntBmp.is())
+            {
+                rBitmapEx = vcl::unotools::bitmapExFromXBitmap(xIntBmp);
+                printf("Size: %d %d\n", rBitmapEx.GetSizePixel().Width(), rBitmapEx.GetSizePixel().Height());
+            }
+        }
+    }
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */