sdrprimitivetools.cxx

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#include <sdr/primitive2d/sdrprimitivetools.hxx>
#include <vcl/lazydelete.hxx>
#include <vcl/BitmapTools.hxx>
#include <mutex>
 
 
// helper methods
 
namespace drawinglayer::primitive2d
{
        BitmapEx createDefaultCross_3x3(const basegfx::BColor& rBColor)
        {
            static vcl::DeleteOnDeinit< BitmapEx > aRetVal(vcl::DeleteOnDeinitFlag::Empty);
            static basegfx::BColor aBColor;
            static std::mutex aMutex;
 
            std::scoped_lock aGuard(aMutex);
 
            if(!aRetVal.get() || rBColor != aBColor)
            {
                // copy values
                aBColor = rBColor;
 
                // create bitmap
                Color c(aBColor);
                sal_uInt8 r = c.GetRed();
                sal_uInt8 g = c.GetGreen();
                sal_uInt8 b = c.GetBlue();
                sal_uInt8 a = 255;
                const sal_uInt8 cross[] = {
                   0, 0, 0, a,   r, g, b, 0,   0, 0, 0, a,
                   r, g, b, 0,   r, g, b, 0,   r, g, b, 0,
                   0, 0, 0, a,   r, g, b, 0,   0, 0, 0, a
                };
                BitmapEx aBitmap = vcl::bitmap::CreateFromData(cross, 3, 3, 12, /*nBitsPerPixel*/32);
 
                // create and exchange at aRetVal
                aRetVal.set(aBitmap);
            }
 
            return aRetVal.get() ? *aRetVal.get() : BitmapEx();
        }
} // end of namespace
 
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