author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 27 Aug 2009 07:44:59 +0300 | |
changeset 16 | a359256acfc6 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
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/* |
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Copyright (C) 2007 Krzysztof Kowalczyk <kkowalczyk@gmail.com> |
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Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <wildfox@kde.org> |
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2004, 2005, 2006 Rob Buis <buis@kde.org> |
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2005, 2007 Apple Inc. All Rights reserved. |
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2007 Alp Toker <alp.toker@collabora.co.uk> |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Library General Public |
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License as published by the Free Software Foundation; either |
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version 2 of the License, or (at your option) any later version. |
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|
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Library General Public License for more details. |
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|
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You should have received a copy of the GNU Library General Public License |
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aint with this library; see the file COPYING.LIB. If not, write to |
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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Boston, MA 02110-1301, USA. |
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*/ |
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#include "config.h" |
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#include "Path.h" |
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#include "AffineTransform.h" |
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#include "CairoPath.h" |
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#include "FloatRect.h" |
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#include "NotImplemented.h" |
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#include "PlatformString.h" |
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#include <cairo.h> |
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#include <math.h> |
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#include <stdio.h> |
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namespace WebCore { |
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Path::Path() |
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: m_path(new CairoPath()) |
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{ |
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} |
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Path::~Path() |
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{ |
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delete m_path; |
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} |
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Path::Path(const Path& other) |
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: m_path(new CairoPath()) |
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{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_path_t* p = cairo_copy_path(other.platformPath()->m_cr); |
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cairo_append_path(cr, p); |
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cairo_path_destroy(p); |
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} |
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Path& Path::operator=(const Path& other) |
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{ |
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if (&other == this) |
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return *this; |
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clear(); |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_path_t* p = cairo_copy_path(other.platformPath()->m_cr); |
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cairo_append_path(cr, p); |
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cairo_path_destroy(p); |
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return *this; |
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} |
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void Path::clear() |
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{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_new_path(cr); |
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} |
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bool Path::isEmpty() const |
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{ |
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// FIXME: if/when the patch to get current pt return status is applied |
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// double dx,dy; |
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// return cairo_get_current_point(cr, &dx, &dy); |
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|
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cairo_t* cr = platformPath()->m_cr; |
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cairo_path_t* p = cairo_copy_path(platformPath()->m_cr); |
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bool hasData = p->num_data; |
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cairo_path_destroy(p); |
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return !hasData; |
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} |
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void Path::translate(const FloatSize& p) |
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{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_translate(cr, p.width(), p.height()); |
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} |
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void Path::moveTo(const FloatPoint& p) |
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{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_move_to(cr, p.x(), p.y()); |
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} |
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void Path::addLineTo(const FloatPoint& p) |
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{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_line_to(cr, p.x(), p.y()); |
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} |
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void Path::addRect(const FloatRect& rect) |
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{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_rectangle(cr, rect.x(), rect.y(), rect.width(), rect.height()); |
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} |
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112 |
|
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/* |
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* inspired by libsvg-cairo |
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*/ |
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void Path::addQuadCurveTo(const FloatPoint& controlPoint, const FloatPoint& point) |
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{ |
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cairo_t* cr = platformPath()->m_cr; |
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double x, y; |
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double x1 = controlPoint.x(); |
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double y1 = controlPoint.y(); |
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double x2 = point.x(); |
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double y2 = point.y(); |
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cairo_get_current_point(cr, &x, &y); |
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cairo_curve_to(cr, |
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x + 2.0 / 3.0 * (x1 - x), y + 2.0 / 3.0 * (y1 - y), |
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x2 + 2.0 / 3.0 * (x1 - x2), y2 + 2.0 / 3.0 * (y1 - y2), |
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x2, y2); |
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} |
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130 |
|
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void Path::addBezierCurveTo(const FloatPoint& controlPoint1, const FloatPoint& controlPoint2, const FloatPoint& controlPoint3) |
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132 |
{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_curve_to(cr, controlPoint1.x(), controlPoint1.y(), |
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controlPoint2.x(), controlPoint2.y(), |
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controlPoint3.x(), controlPoint3.y()); |
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} |
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138 |
|
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void Path::addArc(const FloatPoint& p, float r, float sa, float ea, bool clockwise) |
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140 |
{ |
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cairo_t* cr = platformPath()->m_cr; |
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if (clockwise) |
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cairo_arc(cr, p.x(), p.y(), r, sa, ea); |
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144 |
else |
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cairo_arc_negative(cr, p.x(), p.y(), r, sa, ea); |
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146 |
} |
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147 |
|
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void Path::addArcTo(const FloatPoint& p1, const FloatPoint& p2, float radius) |
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149 |
{ |
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// FIXME: cairo_arc_to not yet in cairo see cairo.h |
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// cairo_arc_to(m_cr, p1.x(), p1.y(), p2.x(), p2.y()); |
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notImplemented(); |
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153 |
} |
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154 |
|
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void Path::addEllipse(const FloatRect& rect) |
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156 |
{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_save(cr); |
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159 |
float yRadius = .5 * rect.height(); |
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float xRadius = .5 * rect.width(); |
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161 |
cairo_translate(cr, rect.x() + xRadius, rect.y() + yRadius); |
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162 |
cairo_scale(cr, xRadius, yRadius); |
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163 |
cairo_arc(cr, 0., 0., 1., 0., 2 * M_PI); |
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164 |
cairo_restore(cr); |
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|
165 |
} |
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|
166 |
|
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167 |
void Path::closeSubpath() |
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168 |
{ |
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cairo_t* cr = platformPath()->m_cr; |
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cairo_close_path(cr); |
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|
171 |
} |
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|
172 |
|
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FloatRect Path::boundingRect() const |
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174 |
{ |
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cairo_t* cr = platformPath()->m_cr; |
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176 |
double x0, x1, y0, y1; |
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177 |
cairo_fill_extents(cr, &x0, &y0, &x1, &y1); |
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178 |
return FloatRect(x0, y0, x1 - x0, y1 - y0); |
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|
179 |
} |
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|
180 |
|
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bool Path::contains(const FloatPoint& point, WindRule rule) const |
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182 |
{ |
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183 |
cairo_t* cr = platformPath()->m_cr; |
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184 |
cairo_fill_rule_t cur = cairo_get_fill_rule(cr); |
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185 |
cairo_set_fill_rule(cr, rule == RULE_EVENODD ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING); |
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186 |
bool contains = cairo_in_fill(cr, point.x(), point.y()); |
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187 |
cairo_set_fill_rule(cr, cur); |
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188 |
return contains; |
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|
189 |
} |
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|
190 |
|
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191 |
void Path::apply(void* info, PathApplierFunction function) const |
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192 |
{ |
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193 |
cairo_t* cr = platformPath()->m_cr; |
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194 |
cairo_path_t* path = cairo_copy_path(cr); |
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195 |
cairo_path_data_t* data; |
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196 |
PathElement pelement; |
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197 |
FloatPoint points[3]; |
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198 |
pelement.points = points; |
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|
199 |
|
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200 |
for (int i = 0; i < path->num_data; i += path->data[i].header.length) { |
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|
201 |
data = &path->data[i]; |
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|
202 |
switch (data->header.type) { |
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|
203 |
case CAIRO_PATH_MOVE_TO: |
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|
204 |
pelement.type = PathElementMoveToPoint; |
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|
205 |
pelement.points[0] = FloatPoint(data[1].point.x,data[1].point.y); |
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|
206 |
function(info, &pelement); |
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|
207 |
break; |
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208 |
case CAIRO_PATH_LINE_TO: |
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209 |
pelement.type = PathElementAddLineToPoint; |
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210 |
pelement.points[0] = FloatPoint(data[1].point.x,data[1].point.y); |
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211 |
function(info, &pelement); |
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212 |
break; |
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213 |
case CAIRO_PATH_CURVE_TO: |
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pelement.type = PathElementAddCurveToPoint; |
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pelement.points[0] = FloatPoint(data[1].point.x,data[1].point.y); |
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pelement.points[1] = FloatPoint(data[2].point.x,data[2].point.y); |
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pelement.points[2] = FloatPoint(data[3].point.x,data[3].point.y); |
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function(info, &pelement); |
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break; |
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case CAIRO_PATH_CLOSE_PATH: |
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pelement.type = PathElementCloseSubpath; |
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function(info, &pelement); |
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break; |
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} |
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} |
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cairo_path_destroy(path); |
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} |
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|
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void Path::transform(const AffineTransform& trans) |
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{ |
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cairo_t* m_cr = platformPath()->m_cr; |
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cairo_matrix_t c_matrix = cairo_matrix_t(trans); |
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cairo_transform(m_cr, &c_matrix); |
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} |
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|
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String Path::debugString() const |
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{ |
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String string = ""; |
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cairo_path_t* path = cairo_copy_path(platformPath()->m_cr); |
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cairo_path_data_t* data; |
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|
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if (!path->num_data ) |
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string = "EMPTY"; |
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|
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for (int i = 0; i < path->num_data; i += path->data[i].header.length) { |
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data = &path->data[i]; |
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switch (data->header.type) { |
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case CAIRO_PATH_MOVE_TO: |
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string += String::format("M %.2f,%.2f", |
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data[1].point.x, data[1].point.y); |
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break; |
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case CAIRO_PATH_LINE_TO: |
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string += String::format("L %.2f,%.2f", |
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data[1].point.x, data[1].point.y); |
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255 |
break; |
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case CAIRO_PATH_CURVE_TO: |
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string += String::format("C %.2f,%.2f,%.2f,%.2f,%.2f,%.2f", |
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data[1].point.x, data[1].point.y, |
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data[2].point.x, data[2].point.y, |
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data[3].point.x, data[3].point.y); |
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261 |
break; |
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case CAIRO_PATH_CLOSE_PATH: |
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string += "X"; |
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264 |
break; |
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265 |
} |
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266 |
} |
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cairo_path_destroy(path); |
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return string; |
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|
269 |
} |
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Revision: 200911
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|
270 |
|
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Revision: 200911
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|
271 |
} // namespace WebCore |