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/*
* Copyright (C) 2008 Apple Inc. 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 "GraphicsContext.h"
#include "AffineTransform.h"
#include "NotImplemented.h"
#include "Path.h"
#include <cairo-win32.h>
#include "GraphicsContextPlatformPrivateCairo.h"
using namespace std;
namespace WebCore {
GraphicsContext::GraphicsContext(HDC dc)
: m_common(createGraphicsContextPrivate())
, m_data(new GraphicsContextPlatformPrivate)
{
if (dc) {
cairo_surface_t* surface = cairo_win32_surface_create(dc);
m_data->cr = cairo_create(surface);
m_data->m_hdc = dc;
} else {
setPaintingDisabled(true);
m_data->cr = 0;
m_data->m_hdc = 0;
}
if (m_data->cr) {
// Make sure the context starts in sync with our state.
setPlatformFillColor(fillColor());
setPlatformStrokeColor(strokeColor());
}
}
HDC GraphicsContext::getWindowsContext(const IntRect& dstRect, bool supportAlphaBlend, bool mayCreateBitmap)
{
// FIXME: We aren't really doing anything with the 'mayCreateBitmap' flag. This needs
// to be addressed.
if (dstRect.isEmpty())
return 0;
// This is probably wrong, and definitely out of date. Pulled from old SVN
cairo_surface_t* surface = cairo_get_target(platformContext());
HDC hdc = cairo_win32_surface_get_dc(surface);
SaveDC(hdc);
// FIXME: We need to make sure a clip is really set on the HDC.
// Call SetWorldTransform to honor the current Cairo transform.
SetGraphicsMode(hdc, GM_ADVANCED); // We need this call for themes to honor world transforms.
cairo_matrix_t mat;
cairo_get_matrix(platformContext(), &mat);
XFORM xform;
xform.eM11 = mat.xx;
xform.eM12 = mat.xy;
xform.eM21 = mat.yx;
xform.eM22 = mat.yy;
xform.eDx = mat.x0;
xform.eDy = mat.y0;
::SetWorldTransform(hdc, &xform);
return hdc;
}
bool GraphicsContext::inTransparencyLayer() const { return m_data->m_transparencyCount; }
void GraphicsContext::releaseWindowsContext(HDC hdc, const IntRect& dstRect, bool supportAlphaBlend, bool mayCreateBitmap)
{
// FIXME: We aren't really doing anything with the 'mayCreateBitmap' flag. This needs
// to be addressed.
if (dstRect.isEmpty())
return;
cairo_surface_t* surface = cairo_get_target(platformContext());
HDC hdc2 = cairo_win32_surface_get_dc(surface);
RestoreDC(hdc2, -1);
cairo_surface_mark_dirty(surface);
}
void GraphicsContextPlatformPrivate::concatCTM(const AffineTransform& transform)
{
cairo_surface_t* surface = cairo_get_target(cr);
HDC hdc = cairo_win32_surface_get_dc(surface);
SaveDC(hdc);
const cairo_matrix_t* matrix = reinterpret_cast<const cairo_matrix_t*>(&transform);
XFORM xform;
xform.eM11 = matrix->xx;
xform.eM12 = matrix->xy;
xform.eM21 = matrix->yx;
xform.eM22 = matrix->yy;
xform.eDx = matrix->x0;
xform.eDy = matrix->y0;
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
}
}
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