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/*
* Copyright (C) 2008 Kevin Ollivier <kevino@theolliviers.com> All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Gradient.h"
#include "CSSParser.h"
#include "GraphicsContext.h"
#include "NotImplemented.h"
#include <algorithm>
#include <wx/dc.h>
#include <wx/dcgraph.h>
#include <wx/graphics.h>
using namespace std;
namespace WebCore {
void Gradient::platformDestroy()
{
delete m_gradient;
}
PlatformGradient Gradient::platformGradient()
{
if (m_gradient)
return m_gradient;
#if wxCHECK_VERSION(2, 9, 1)
sortStopsIfNecessary();
wxGraphicsRenderer* renderer = 0;
#if wxUSE_CAIRO
renderer = wxGraphicsRenderer::GetCairoRenderer();
#else
renderer = wxGraphicsRenderer::GetDefaultRenderer();
#endif
if (renderer) {
wxGraphicsGradientStops stops;
Vector<ColorStop>::iterator stopIterator = m_stops.begin();
int numStops = 0;
stops.SetStartColour(wxColour(255*stopIterator->red, 255*stopIterator->green, 255*stopIterator->blue, 255*stopIterator->alpha));
while (stopIterator != m_stops.end()) {
double position = stopIterator->stop;
if (m_radial && m_r0)
position = min((m_r0 / m_r1+position*(1.0f-m_r0 / m_r1)), 1.0);
stops.Add(wxGraphicsGradientStop(wxColour(255*stopIterator->red, 255*stopIterator->green, 255*stopIterator->blue, 255*stopIterator->alpha), position));
stopIterator++;
numStops++;
}
stopIterator--;
stops.SetEndColour(wxColour(255*stopIterator->red, 255*stopIterator->green, 255*stopIterator->blue, 255*stopIterator->alpha));
wxGraphicsBrush gradient;
if (numStops >= 2) {
if (m_radial)
gradient = renderer->CreateRadialGradientBrush(m_p1.x(), m_p1.y(), m_p0.x(), m_p0.y(), m_r1, stops);
else
gradient = renderer->CreateLinearGradientBrush(m_p0.x(), m_p0.y(), m_p1.x(), m_p1.y(), stops);
}
m_gradient = new wxGraphicsBrush(gradient);
}
#endif
return m_gradient;
}
void Gradient::fill(GraphicsContext* c, const FloatRect& r)
{
#if wxCHECK_VERSION(2, 9, 1)
wxGCDC* context = dynamic_cast<wxGCDC*>(c->platformContext());
if (!context)
return;
wxGraphicsContext* gradientContext = context->GetGraphicsContext();
gradientContext->SetPen(*wxTRANSPARENT_PEN);
gradientContext->SetBrush(*platformGradient());
gradientContext->DrawRectangle(r.x(), r.y(), r.width(), r.height());
#endif
}
} //namespace
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