mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
60c2e41079
This will be used to implement painting of 2D paths. This first patch adds support for line_to(), move_to() and close(). It will try to have the same semantics as the HTML <canvas> element. To stroke a Path, simply pass it to Painter::stroke_path().
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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 <AK/StringBuilder.h>
|
|
#include <LibGfx/Path.h>
|
|
|
|
namespace Gfx {
|
|
|
|
void Path::close()
|
|
{
|
|
if (m_segments.size() <= 1)
|
|
return;
|
|
|
|
auto& last_point = m_segments.last().point;
|
|
|
|
for (ssize_t i = m_segments.size() - 1; i >= 0; --i) {
|
|
auto& segment = m_segments[i];
|
|
if (segment.type == Segment::Type::MoveTo) {
|
|
if (last_point == segment.point)
|
|
return;
|
|
m_segments.append({ Segment::Type::LineTo, segment.point });
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
String Path::to_string() const
|
|
{
|
|
StringBuilder builder;
|
|
builder.append("Path { ");
|
|
for (auto& segment : m_segments) {
|
|
switch (segment.type) {
|
|
case Segment::Type::MoveTo:
|
|
builder.append("MoveTo");
|
|
break;
|
|
case Segment::Type::LineTo:
|
|
builder.append("LineTo");
|
|
break;
|
|
case Segment::Type::Invalid:
|
|
builder.append("Invalid");
|
|
break;
|
|
}
|
|
builder.append('(');
|
|
builder.append(segment.point.to_string());
|
|
builder.append(')');
|
|
|
|
builder.append(' ');
|
|
}
|
|
builder.append("}");
|
|
return builder.to_string();
|
|
}
|
|
|
|
}
|