Move geometry classes from core/platform/graphics to platform/geometry

Source/core/platform/graphics/LayoutRect.h

-/*
- * Copyright (c) 2012, Google 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * 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.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * 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
- * OWNER 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.
- */
-
-#ifndef LayoutRect_h
-#define LayoutRect_h
-
-#include "core/platform/graphics/IntRect.h"
-#include "core/platform/graphics/LayoutBoxExtent.h"
-#include "core/platform/graphics/LayoutPoint.h"
-#include "wtf/Vector.h"
-
-namespace WebCore {
-
-class FloatRect;
-
-class LayoutRect {
-public:
-    LayoutRect() { }
-    LayoutRect(const LayoutPoint& location, const LayoutSize& size)
-        : m_location(location), m_size(size) { }
-    LayoutRect(LayoutUnit x, LayoutUnit y, LayoutUnit width, LayoutUnit height)
-        : m_location(LayoutPoint(x, y)), m_size(LayoutSize(width, height)) { }
-    LayoutRect(const FloatPoint& location, const FloatSize& size)
-        : m_location(location), m_size(size) { }
-    LayoutRect(const IntRect& rect) : m_location(rect.location()), m_size(rect.size()) { }
-
-    explicit LayoutRect(const FloatRect&); // don't do this implicitly since it's lossy
-
-    LayoutPoint location() const { return m_location; }
-    LayoutSize size() const { return m_size; }
-
-    IntPoint pixelSnappedLocation() const { return roundedIntPoint(m_location); }
-    IntSize pixelSnappedSize() const { return IntSize(snapSizeToPixel(m_size.width(), m_location.x()), snapSizeToPixel(m_size.height(), m_location.y())); }
-
-    void setLocation(const LayoutPoint& location) { m_location = location; }
-    void setSize(const LayoutSize& size) { m_size = size; }
-
-    LayoutUnit x() const { return m_location.x(); }
-    LayoutUnit y() const { return m_location.y(); }
-    LayoutUnit maxX() const { return x() + width(); }
-    LayoutUnit maxY() const { return y() + height(); }
-    LayoutUnit width() const { return m_size.width(); }
-    LayoutUnit height() const { return m_size.height(); }
-
-    int pixelSnappedX() const { return x().round(); }
-    int pixelSnappedY() const { return y().round(); }
-    int pixelSnappedWidth() const { return snapSizeToPixel(width(), x()); }
-    int pixelSnappedHeight() const { return snapSizeToPixel(height(), y()); }
-    int pixelSnappedMaxX() const { return (m_location.x() + m_size.width()).round(); }
-    int pixelSnappedMaxY() const { return (m_location.y() + m_size.height()).round(); }
-
-    void setX(LayoutUnit x) { m_location.setX(x); }
-    void setY(LayoutUnit y) { m_location.setY(y); }
-    void setWidth(LayoutUnit width) { m_size.setWidth(width); }
-    void setHeight(LayoutUnit height) { m_size.setHeight(height); }
-
-    bool isEmpty() const { return m_size.isEmpty(); }
-
-    // NOTE: The result is rounded to integer values, and thus may be not the exact
-    // center point.
-    LayoutPoint center() const { return LayoutPoint(x() + width() / 2, y() + height() / 2); }
-
-    void move(const LayoutSize& size) { m_location += size; }
-    void moveBy(const LayoutPoint& offset) { m_location.move(offset.x(), offset.y()); }
-    void move(LayoutUnit dx, LayoutUnit dy) { m_location.move(dx, dy); }
-
-    void expand(const LayoutSize& size) { m_size += size; }
-    void expand(const LayoutBoxExtent& box)
-    {
-        m_location.move(-box.left(), -box.top());
-        m_size.expand(box.left() + box.right(), box.top() + box.bottom());
-    }
-    void expand(LayoutUnit dw, LayoutUnit dh) { m_size.expand(dw, dh); }
-    void contract(const LayoutSize& size) { m_size -= size; }
-    void contract(const LayoutBoxExtent& box)
-    {
-        m_location.move(box.left(), box.top());
-        m_size.shrink(box.left() + box.right(), box.top() + box.bottom());
-    }
-    void contract(LayoutUnit dw, LayoutUnit dh) { m_size.expand(-dw, -dh); }
-
-    void shiftXEdgeTo(LayoutUnit edge)
-    {
-        LayoutUnit delta = edge - x();
-        setX(edge);
-        setWidth(std::max<LayoutUnit>(0, width() - delta));
-    }
-    void shiftMaxXEdgeTo(LayoutUnit edge)
-    {
-        LayoutUnit delta = edge - maxX();
-        setWidth(std::max<LayoutUnit>(0, width() + delta));
-    }
-    void shiftYEdgeTo(LayoutUnit edge)
-    {
-        LayoutUnit delta = edge - y();
-        setY(edge);
-        setHeight(std::max<LayoutUnit>(0, height() - delta));
-    }
-    void shiftMaxYEdgeTo(LayoutUnit edge)
-    {
-        LayoutUnit delta = edge - maxY();
-        setHeight(std::max<LayoutUnit>(0, height() + delta));
-    }
-
-    LayoutPoint minXMinYCorner() const { return m_location; } // typically topLeft
-    LayoutPoint maxXMinYCorner() const { return LayoutPoint(m_location.x() + m_size.width(), m_location.y()); } // typically topRight
-    LayoutPoint minXMaxYCorner() const { return LayoutPoint(m_location.x(), m_location.y() + m_size.height()); } // typically bottomLeft
-    LayoutPoint maxXMaxYCorner() const { return LayoutPoint(m_location.x() + m_size.width(), m_location.y() + m_size.height()); } // typically bottomRight
-
-    bool intersects(const LayoutRect&) const;
-    bool contains(const LayoutRect&) const;
-
-    // This checks to see if the rect contains x,y in the traditional sense.
-    // Equivalent to checking if the rect contains a 1x1 rect below and to the right of (px,py).
-    bool contains(LayoutUnit px, LayoutUnit py) const
-        { return px >= x() && px < maxX() && py >= y() && py < maxY(); }
-    bool contains(const LayoutPoint& point) const { return contains(point.x(), point.y()); }
-
-    void intersect(const LayoutRect&);
-    void unite(const LayoutRect&);
-    void uniteIfNonZero(const LayoutRect&);
-
-    void inflateX(LayoutUnit dx)
-    {
-        m_location.setX(m_location.x() - dx);
-        m_size.setWidth(m_size.width() + dx + dx);
-    }
-    void inflateY(LayoutUnit dy)
-    {
-        m_location.setY(m_location.y() - dy);
-        m_size.setHeight(m_size.height() + dy + dy);
-    }
-    void inflate(LayoutUnit d) { inflateX(d); inflateY(d); }
-    void scale(float s);
-    void scale(float xAxisScale, float yAxisScale);
-
-    LayoutRect transposedRect() const { return LayoutRect(m_location.transposedPoint(), m_size.transposedSize()); }
-
-    static LayoutRect infiniteRect()
-    {
-        // Return a rect that is slightly smaller than the true max rect to allow pixelSnapping to round up to the nearest IntRect without overflowing.
-        return LayoutRect(LayoutUnit::nearlyMin() / 2, LayoutUnit::nearlyMin() / 2, LayoutUnit::nearlyMax(), LayoutUnit::nearlyMax());
-    }
-
-private:
-    LayoutPoint m_location;
-    LayoutSize m_size;
-};
-
-inline LayoutRect intersection(const LayoutRect& a, const LayoutRect& b)
-{
-    LayoutRect c = a;
-    c.intersect(b);
-    return c;
-}
-
-inline LayoutRect unionRect(const LayoutRect& a, const LayoutRect& b)
-{
-    LayoutRect c = a;
-    c.unite(b);
-    return c;
-}
-
-LayoutRect unionRect(const Vector<LayoutRect>&);
-
-inline bool operator==(const LayoutRect& a, const LayoutRect& b)
-{
-    return a.location() == b.location() && a.size() == b.size();
-}
-
-inline bool operator!=(const LayoutRect& a, const LayoutRect& b)
-{
-    return a.location() != b.location() || a.size() != b.size();
-}
-
-inline IntRect pixelSnappedIntRect(const LayoutRect& rect)
-{
-    return IntRect(roundedIntPoint(rect.location()), IntSize(snapSizeToPixel(rect.width(), rect.x()),
-                                                             snapSizeToPixel(rect.height(), rect.y())));
-}
-
-IntRect enclosingIntRect(const LayoutRect&);
-LayoutRect enclosingLayoutRect(const FloatRect&);
-
-
-inline IntRect pixelSnappedIntRect(LayoutUnit left, LayoutUnit top, LayoutUnit width, LayoutUnit height)
-{
-    return IntRect(left.round(), top.round(), snapSizeToPixel(width, left), snapSizeToPixel(height, top));
-}
-
-inline IntRect pixelSnappedIntRectFromEdges(LayoutUnit left, LayoutUnit top, LayoutUnit right, LayoutUnit bottom)
-{
-    return IntRect(left.round(), top.round(), snapSizeToPixel(right - left, left), snapSizeToPixel(bottom - top, top));
-}
-
-inline IntRect pixelSnappedIntRect(LayoutPoint location, LayoutSize size)
-{
-    return IntRect(roundedIntPoint(location), pixelSnappedIntSize(size, location));
-}
-
-} // namespace WebCore
-
-#endif // LayoutRect_h