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| -rw-r--r-- | Libraries/LibGfx/FloatRect.cpp | 135 | ||||
| -rw-r--r-- | Libraries/LibGfx/Makefile | 1 |
2 files changed, 136 insertions, 0 deletions
diff --git a/Libraries/LibGfx/FloatRect.cpp b/Libraries/LibGfx/FloatRect.cpp new file mode 100644 index 0000000000..6565b3a6c1 --- /dev/null +++ b/Libraries/LibGfx/FloatRect.cpp @@ -0,0 +1,135 @@ +/* + * Copyright (c) 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/StdLibExtras.h> +#include <AK/String.h> +#include <AK/Vector.h> +#include <LibGfx/FloatRect.h> +#include <LibIPC/Decoder.h> + +namespace Gfx { + +void FloatRect::intersect(const FloatRect& other) +{ + int l = max(left(), other.left()); + int r = min(right(), other.right()); + int t = max(top(), other.top()); + int b = min(bottom(), other.bottom()); + + if (l > r || t > b) { + m_location = {}; + m_size = {}; + return; + } + + m_location.set_x(l); + m_location.set_y(t); + m_size.set_width((r - l) + 1); + m_size.set_height((b - t) + 1); +} + +FloatRect FloatRect::united(const FloatRect& other) const +{ + if (is_null()) + return other; + if (other.is_null()) + return *this; + FloatRect rect; + rect.set_left(min(left(), other.left())); + rect.set_top(min(top(), other.top())); + rect.set_right(max(right(), other.right())); + rect.set_bottom(max(bottom(), other.bottom())); + return rect; +} + +Vector<FloatRect, 4> FloatRect::shatter(const FloatRect& hammer) const +{ + Vector<FloatRect, 4> pieces; + if (!intersects(hammer)) { + pieces.unchecked_append(*this); + return pieces; + } + FloatRect top_shard { + x(), + y(), + width(), + hammer.y() - y() + }; + FloatRect bottom_shard { + x(), + hammer.y() + hammer.height(), + width(), + (y() + height()) - (hammer.y() + hammer.height()) + }; + FloatRect left_shard { + x(), + max(hammer.y(), y()), + hammer.x() - x(), + min((hammer.y() + hammer.height()), (y() + height())) - max(hammer.y(), y()) + }; + FloatRect right_shard { + hammer.x() + hammer.width(), + max(hammer.y(), y()), + right() - hammer.right(), + min((hammer.y() + hammer.height()), (y() + height())) - max(hammer.y(), y()) + }; + if (intersects(top_shard)) + pieces.unchecked_append(top_shard); + if (intersects(bottom_shard)) + pieces.unchecked_append(bottom_shard); + if (intersects(left_shard)) + pieces.unchecked_append(left_shard); + if (intersects(right_shard)) + pieces.unchecked_append(right_shard); + + return pieces; +} + +void FloatRect::align_within(const FloatRect& other, TextAlignment alignment) +{ + switch (alignment) { + case TextAlignment::Center: + center_within(other); + return; + case TextAlignment::TopLeft: + set_location(other.location()); + return; + case TextAlignment::TopRight: + set_x(other.x() + other.width() - width()); + set_y(other.y()); + return; + case TextAlignment::CenterLeft: + set_x(other.x()); + center_vertically_within(other); + return; + case TextAlignment::CenterRight: + set_x(other.x() + other.width() - width()); + center_vertically_within(other); + return; + } +} + +} diff --git a/Libraries/LibGfx/Makefile b/Libraries/LibGfx/Makefile index 201338c401..8f8833d811 100644 --- a/Libraries/LibGfx/Makefile +++ b/Libraries/LibGfx/Makefile @@ -6,6 +6,7 @@ OBJS = \ DisjointRectSet.o \ Emoji.o \ Font.o \ + FloatRect.o \ GIFLoader.o \ ImageDecoder.o \ PNGLoader.o \ |