helperwrongspellrenderer.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include "helperwrongspellrenderer.hxx"
#include <drawinglayer/primitive2d/wrongspellprimitive2d.hxx>
#include <tools/gen.hxx>
#include <vcl/outdev.hxx>
#include <basegfx/color/bcolormodifier.hxx>
#include <vcl/outdev/ScopedStates.hxx>
 
using namespace css;
 
namespace drawinglayer
{
namespace
{
constexpr sal_uInt32 constMinimumFontHeight = 5; // #define WRONG_SHOW_MIN 5
}
 
bool renderWrongSpellPrimitive2D(const primitive2d::WrongSpellPrimitive2D& rWrongSpellCandidate,
                                 OutputDevice& rOutputDevice,
                                 const basegfx::B2DHomMatrix& rObjectToViewTransformation,
                                 const basegfx::BColorModifierStack& rBColorModifierStack)
{
    const basegfx::B2DHomMatrix aLocalTransform(rObjectToViewTransformation
                                                * rWrongSpellCandidate.getTransformation());
    const basegfx::B2DVector aFontVectorPixel(aLocalTransform * basegfx::B2DVector(0.0, 1.0));
    const sal_uInt32 nFontPixelHeight(basegfx::fround(aFontVectorPixel.getLength()));
 
    if (nFontPixelHeight <= constMinimumFontHeight)
        return true;
 
    const basegfx::B2DPoint aStart(aLocalTransform
                                   * basegfx::B2DPoint(rWrongSpellCandidate.getStart(), 0.0));
    const basegfx::B2DPoint aStop(aLocalTransform
                                  * basegfx::B2DPoint(rWrongSpellCandidate.getStop(), 0.0));
    const Point aVclStart(basegfx::fround(aStart.getX()), basegfx::fround(aStart.getY()));
    const Point aVclStop(basegfx::fround(aStop.getX()), basegfx::fround(aStop.getY()));
 
    // #i101075# draw it. Do not forget to use the evtl. offsetted origin of the target device,
    // e.g. when used with mask/transparence buffer device
    const Point aOrigin(rOutputDevice.GetMapMode().GetOrigin());
 
    const basegfx::BColor aProcessedColor(
        rBColorModifierStack.getModifiedColor(rWrongSpellCandidate.getColor()));
    const bool bMapModeEnabledState(rOutputDevice.IsMapModeEnabled());
 
    vcl::ScopedAntialiasing a(rOutputDevice, true);
    rOutputDevice.EnableMapMode(false);
    rOutputDevice.SetLineColor(Color(aProcessedColor));
    rOutputDevice.SetFillColor();
    rOutputDevice.DrawWaveLine(aOrigin + aVclStart, aOrigin + aVclStop);
    rOutputDevice.EnableMapMode(bMapModeEnabledState);
 
    // cannot really go wrong
    return true;
}
} // end of namespace drawinglayer
 
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