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-rw-r--r--WebCore/platform/graphics/cairo/PathCairo.cpp342
1 files changed, 0 insertions, 342 deletions
diff --git a/WebCore/platform/graphics/cairo/PathCairo.cpp b/WebCore/platform/graphics/cairo/PathCairo.cpp
deleted file mode 100644
index 03f1d10..0000000
--- a/WebCore/platform/graphics/cairo/PathCairo.cpp
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@@ -1,342 +0,0 @@
-/*
- Copyright (C) 2007 Krzysztof Kowalczyk <kkowalczyk@gmail.com>
- Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <wildfox@kde.org>
- 2004, 2005, 2006 Rob Buis <buis@kde.org>
- 2005, 2007 Apple Inc. All Rights reserved.
- 2007 Alp Toker <alp@atoker.com>
- 2008 Dirk Schulze <krit@webkit.org>
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public License
- aint with this library; see the file COPYING.LIB. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
-*/
-
-#include "config.h"
-#include "Path.h"
-
-#include "AffineTransform.h"
-#include "CairoPath.h"
-#include "FloatRect.h"
-#include "GraphicsContext.h"
-#include "OwnPtrCairo.h"
-#include "PlatformString.h"
-#include "StrokeStyleApplier.h"
-#include <cairo.h>
-#include <math.h>
-#include <wtf/MathExtras.h>
-
-namespace WebCore {
-
-Path::Path()
- : m_path(new CairoPath())
-{
-}
-
-Path::~Path()
-{
- delete m_path;
-}
-
-Path::Path(const Path& other)
- : m_path(new CairoPath())
-{
- cairo_t* cr = platformPath()->context();
- OwnPtr<cairo_path_t> p(cairo_copy_path(other.platformPath()->context()));
- cairo_append_path(cr, p.get());
-}
-
-Path& Path::operator=(const Path& other)
-{
- if (&other == this)
- return *this;
-
- clear();
- cairo_t* cr = platformPath()->context();
- OwnPtr<cairo_path_t> p(cairo_copy_path(other.platformPath()->context()));
- cairo_append_path(cr, p.get());
- return *this;
-}
-
-void Path::clear()
-{
- cairo_t* cr = platformPath()->context();
- cairo_new_path(cr);
-}
-
-bool Path::isEmpty() const
-{
- return !cairo_has_current_point(platformPath()->context());
-}
-
-bool Path::hasCurrentPoint() const
-{
- return !isEmpty();
-}
-
-FloatPoint Path::currentPoint() const
-{
- // FIXME: Is this the correct way?
- double x;
- double y;
- cairo_get_current_point(platformPath()->context(), &x, &y);
- return FloatPoint(x, y);
-}
-
-void Path::translate(const FloatSize& p)
-{
- cairo_t* cr = platformPath()->context();
- cairo_translate(cr, -p.width(), -p.height());
-}
-
-void Path::moveTo(const FloatPoint& p)
-{
- cairo_t* cr = platformPath()->context();
- cairo_move_to(cr, p.x(), p.y());
-}
-
-void Path::addLineTo(const FloatPoint& p)
-{
- cairo_t* cr = platformPath()->context();
- cairo_line_to(cr, p.x(), p.y());
-}
-
-void Path::addRect(const FloatRect& rect)
-{
- cairo_t* cr = platformPath()->context();
- cairo_rectangle(cr, rect.x(), rect.y(), rect.width(), rect.height());
-}
-
-/*
- * inspired by libsvg-cairo
- */
-void Path::addQuadCurveTo(const FloatPoint& controlPoint, const FloatPoint& point)
-{
- cairo_t* cr = platformPath()->context();
- double x, y;
- double x1 = controlPoint.x();
- double y1 = controlPoint.y();
- double x2 = point.x();
- double y2 = point.y();
- cairo_get_current_point(cr, &x, &y);
- cairo_curve_to(cr,
- x + 2.0 / 3.0 * (x1 - x), y + 2.0 / 3.0 * (y1 - y),
- x2 + 2.0 / 3.0 * (x1 - x2), y2 + 2.0 / 3.0 * (y1 - y2),
- x2, y2);
-}
-
-void Path::addBezierCurveTo(const FloatPoint& controlPoint1, const FloatPoint& controlPoint2, const FloatPoint& controlPoint3)
-{
- cairo_t* cr = platformPath()->context();
- cairo_curve_to(cr, controlPoint1.x(), controlPoint1.y(),
- controlPoint2.x(), controlPoint2.y(),
- controlPoint3.x(), controlPoint3.y());
-}
-
-void Path::addArc(const FloatPoint& p, float r, float sa, float ea, bool anticlockwise)
-{
- // http://bugs.webkit.org/show_bug.cgi?id=16449
- // cairo_arc() functions hang or crash when passed inf as radius or start/end angle
- if (!isfinite(r) || !isfinite(sa) || !isfinite(ea))
- return;
-
- cairo_t* cr = platformPath()->context();
- if (anticlockwise)
- cairo_arc_negative(cr, p.x(), p.y(), r, sa, ea);
- else
- cairo_arc(cr, p.x(), p.y(), r, sa, ea);
-}
-
-void Path::addArcTo(const FloatPoint& p1, const FloatPoint& p2, float radius)
-{
- if (isEmpty())
- return;
-
- cairo_t* cr = platformPath()->context();
-
- double x0, y0;
- cairo_get_current_point(cr, &x0, &y0);
- FloatPoint p0(x0, y0);
- if ((p1.x() == p0.x() && p1.y() == p0.y()) || (p1.x() == p2.x() && p1.y() == p2.y()) || radius == 0.f) {
- cairo_line_to(cr, p1.x(), p1.y());
- return;
- }
-
- FloatPoint p1p0((p0.x() - p1.x()),(p0.y() - p1.y()));
- FloatPoint p1p2((p2.x() - p1.x()),(p2.y() - p1.y()));
- float p1p0_length = sqrtf(p1p0.x() * p1p0.x() + p1p0.y() * p1p0.y());
- float p1p2_length = sqrtf(p1p2.x() * p1p2.x() + p1p2.y() * p1p2.y());
-
- double cos_phi = (p1p0.x() * p1p2.x() + p1p0.y() * p1p2.y()) / (p1p0_length * p1p2_length);
- // all points on a line logic
- if (cos_phi == -1) {
- cairo_line_to(cr, p1.x(), p1.y());
- return;
- }
- if (cos_phi == 1) {
- // add infinite far away point
- unsigned int max_length = 65535;
- double factor_max = max_length / p1p0_length;
- FloatPoint ep((p0.x() + factor_max * p1p0.x()), (p0.y() + factor_max * p1p0.y()));
- cairo_line_to(cr, ep.x(), ep.y());
- return;
- }
-
- float tangent = radius / tan(acos(cos_phi) / 2);
- float factor_p1p0 = tangent / p1p0_length;
- FloatPoint t_p1p0((p1.x() + factor_p1p0 * p1p0.x()), (p1.y() + factor_p1p0 * p1p0.y()));
-
- FloatPoint orth_p1p0(p1p0.y(), -p1p0.x());
- float orth_p1p0_length = sqrt(orth_p1p0.x() * orth_p1p0.x() + orth_p1p0.y() * orth_p1p0.y());
- float factor_ra = radius / orth_p1p0_length;
-
- // angle between orth_p1p0 and p1p2 to get the right vector orthographic to p1p0
- double cos_alpha = (orth_p1p0.x() * p1p2.x() + orth_p1p0.y() * p1p2.y()) / (orth_p1p0_length * p1p2_length);
- if (cos_alpha < 0.f)
- orth_p1p0 = FloatPoint(-orth_p1p0.x(), -orth_p1p0.y());
-
- FloatPoint p((t_p1p0.x() + factor_ra * orth_p1p0.x()), (t_p1p0.y() + factor_ra * orth_p1p0.y()));
-
- // calculate angles for addArc
- orth_p1p0 = FloatPoint(-orth_p1p0.x(), -orth_p1p0.y());
- float sa = acos(orth_p1p0.x() / orth_p1p0_length);
- if (orth_p1p0.y() < 0.f)
- sa = 2 * piDouble - sa;
-
- // anticlockwise logic
- bool anticlockwise = false;
-
- float factor_p1p2 = tangent / p1p2_length;
- FloatPoint t_p1p2((p1.x() + factor_p1p2 * p1p2.x()), (p1.y() + factor_p1p2 * p1p2.y()));
- FloatPoint orth_p1p2((t_p1p2.x() - p.x()),(t_p1p2.y() - p.y()));
- float orth_p1p2_length = sqrtf(orth_p1p2.x() * orth_p1p2.x() + orth_p1p2.y() * orth_p1p2.y());
- float ea = acos(orth_p1p2.x() / orth_p1p2_length);
- if (orth_p1p2.y() < 0)
- ea = 2 * piDouble - ea;
- if ((sa > ea) && ((sa - ea) < piDouble))
- anticlockwise = true;
- if ((sa < ea) && ((ea - sa) > piDouble))
- anticlockwise = true;
-
- cairo_line_to(cr, t_p1p0.x(), t_p1p0.y());
-
- addArc(p, radius, sa, ea, anticlockwise);
-}
-
-void Path::addEllipse(const FloatRect& rect)
-{
- cairo_t* cr = platformPath()->context();
- cairo_save(cr);
- float yRadius = .5 * rect.height();
- float xRadius = .5 * rect.width();
- cairo_translate(cr, rect.x() + xRadius, rect.y() + yRadius);
- cairo_scale(cr, xRadius, yRadius);
- cairo_arc(cr, 0., 0., 1., 0., 2 * piDouble);
- cairo_restore(cr);
-}
-
-void Path::closeSubpath()
-{
- cairo_t* cr = platformPath()->context();
- cairo_close_path(cr);
-}
-
-FloatRect Path::boundingRect() const
-{
- cairo_t* cr = platformPath()->context();
- double x0, x1, y0, y1;
- cairo_path_extents(cr, &x0, &y0, &x1, &y1);
- return FloatRect(x0, y0, x1 - x0, y1 - y0);
-}
-
-FloatRect Path::strokeBoundingRect(StrokeStyleApplier* applier)
-{
- cairo_t* cr = platformPath()->context();
- if (applier) {
- GraphicsContext gc(cr);
- applier->strokeStyle(&gc);
- }
-
- double x0, x1, y0, y1;
- cairo_stroke_extents(cr, &x0, &y0, &x1, &y1);
- return FloatRect(x0, y0, x1 - x0, y1 - y0);
-}
-
-bool Path::contains(const FloatPoint& point, WindRule rule) const
-{
- if (!isfinite(point.x()) || !isfinite(point.y()))
- return false;
- cairo_t* cr = platformPath()->context();
- cairo_fill_rule_t cur = cairo_get_fill_rule(cr);
- cairo_set_fill_rule(cr, rule == RULE_EVENODD ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
- bool contains = cairo_in_fill(cr, point.x(), point.y());
- cairo_set_fill_rule(cr, cur);
- return contains;
-}
-
-bool Path::strokeContains(StrokeStyleApplier* applier, const FloatPoint& point) const
-{
- ASSERT(applier);
- cairo_t* cr = platformPath()->context();
- GraphicsContext gc(cr);
- applier->strokeStyle(&gc);
-
- return cairo_in_stroke(cr, point.x(), point.y());
-}
-
-void Path::apply(void* info, PathApplierFunction function) const
-{
- cairo_t* cr = platformPath()->context();
- OwnPtr<cairo_path_t> path(cairo_copy_path(cr));
- cairo_path_data_t* data;
- PathElement pelement;
- FloatPoint points[3];
- pelement.points = points;
-
- for (int i = 0; i < path->num_data; i += path->data[i].header.length) {
- data = &path->data[i];
- switch (data->header.type) {
- case CAIRO_PATH_MOVE_TO:
- pelement.type = PathElementMoveToPoint;
- pelement.points[0] = FloatPoint(data[1].point.x,data[1].point.y);
- function(info, &pelement);
- break;
- case CAIRO_PATH_LINE_TO:
- pelement.type = PathElementAddLineToPoint;
- pelement.points[0] = FloatPoint(data[1].point.x,data[1].point.y);
- function(info, &pelement);
- break;
- case CAIRO_PATH_CURVE_TO:
- pelement.type = PathElementAddCurveToPoint;
- pelement.points[0] = FloatPoint(data[1].point.x,data[1].point.y);
- pelement.points[1] = FloatPoint(data[2].point.x,data[2].point.y);
- pelement.points[2] = FloatPoint(data[3].point.x,data[3].point.y);
- function(info, &pelement);
- break;
- case CAIRO_PATH_CLOSE_PATH:
- pelement.type = PathElementCloseSubpath;
- function(info, &pelement);
- break;
- }
- }
-}
-
-void Path::transform(const AffineTransform& trans)
-{
- cairo_t* cr = platformPath()->context();
- cairo_matrix_t c_matrix = cairo_matrix_t(trans);
- cairo_matrix_invert(&c_matrix);
- cairo_transform(cr, &c_matrix);
-}
-
-} // namespace WebCore