Files
libreoffice/sd/source/ui/slidesorter/view/SlsFontProvider.cxx
2011-11-27 13:20:56 -06:00

134 lines
3.8 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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*
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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#include "view/SlsFontProvider.hxx"
#include "controller/SlideSorterController.hxx"
#include <sfx2/app.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
using namespace ::sd::slidesorter;
namespace sd { namespace slidesorter { namespace view {
FontProvider* FontProvider::mpInstance = NULL;
FontProvider& FontProvider::Instance (void)
{
if (mpInstance == NULL)
{
::osl::GetGlobalMutex aMutexFunctor;
::osl::MutexGuard aGuard (aMutexFunctor());
if (mpInstance == NULL)
{
// Create an instance of the class and register it at the
// SdGlobalResourceContainer so that it is eventually released.
FontProvider* pInstance = new FontProvider();
SdGlobalResourceContainer::Instance().AddResource (
::std::auto_ptr<SdGlobalResource>(pInstance));
OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
mpInstance = pInstance;
}
}
else
{
OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
}
// We throw an exception when for some strange reason no instance of
// this class exists.
if (mpInstance == NULL)
throw ::com::sun::star::uno::RuntimeException(::rtl::OUString(
RTL_CONSTASCII_USTRINGPARAM("com.sun.star.document.IndexedPropertyValues")),
NULL);
return *mpInstance;
}
FontProvider::FontProvider (void)
: maFont(),
maMapMode()
{
}
FontProvider::~FontProvider (void)
{
}
void FontProvider::Invalidate (void)
{
maFont.reset();
}
FontProvider::SharedFontPointer FontProvider::GetFont (const OutputDevice& rDevice)
{
// Reset the font when the map mode has changed since its creation.
if (maMapMode != rDevice.GetMapMode())
maFont.reset();
if (maFont.get() == NULL)
{
// Initialize the font from the application style settings.
maFont.reset(new Font (Application::GetSettings().GetStyleSettings().GetAppFont()));
maFont->SetTransparent(sal_True);
maFont->SetWeight(WEIGHT_NORMAL);
// Transform the point size to pixel size.
MapMode aFontMapMode (MAP_POINT);
Size aFontSize (rDevice.LogicToPixel(maFont->GetSize(), aFontMapMode));
// Transform the font size to the logical coordinates of the device.
maFont->SetSize (rDevice.PixelToLogic(aFontSize));
// Remember the map mode of the given device to detect different
// devices or modified zoom scales on future calls.
maMapMode = rDevice.GetMapMode();
}
return maFont;
}
} } } // end of namespace ::sd::slidesorter::view
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */