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91 lines
3.4 KiB
91 lines
3.4 KiB
11 years ago
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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#ifndef JUCE_RELATIVEPOINT_H_INCLUDED
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#define JUCE_RELATIVEPOINT_H_INCLUDED
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//==============================================================================
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/**
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An X-Y position stored as a pair of RelativeCoordinate values.
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@see RelativeCoordinate, RelativeRectangle
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*/
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class JUCE_API RelativePoint
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{
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public:
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/** Creates a point at the origin. */
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RelativePoint();
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/** Creates an absolute point, relative to the origin. */
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RelativePoint (Point<float> absolutePoint);
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/** Creates an absolute point, relative to the origin. */
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RelativePoint (float absoluteX, float absoluteY);
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/** Creates an absolute point from two coordinates. */
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RelativePoint (const RelativeCoordinate& x, const RelativeCoordinate& y);
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/** Creates a point from a stringified representation.
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The string must contain a pair of coordinates, separated by space or a comma. The syntax for the coordinate
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strings is explained in the RelativeCoordinate class.
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@see toString
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*/
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RelativePoint (const String& stringVersion);
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bool operator== (const RelativePoint& other) const noexcept;
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bool operator!= (const RelativePoint& other) const noexcept;
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/** Calculates the absolute position of this point.
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You'll need to provide a suitable Expression::Scope for looking up any coordinates that may
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be needed to calculate the result.
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*/
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Point<float> resolve (const Expression::Scope* evaluationContext) const;
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/** Changes the values of this point's coordinates to make it resolve to the specified position.
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Calling this will leave any anchor points unchanged, but will set any absolute
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or relative positions to whatever values are necessary to make the resultant position
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match the position that is provided.
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*/
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void moveToAbsolute (Point<float> newPos, const Expression::Scope* evaluationContext);
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/** Returns a string which represents this point.
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This returns a comma-separated pair of coordinates. For details of the string syntax used by the
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coordinates, see the RelativeCoordinate constructor notes.
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The string that is returned can be passed to the RelativePoint constructor to recreate the point.
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*/
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String toString() const;
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/** Returns true if this point depends on any other coordinates for its position. */
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bool isDynamic() const;
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// The actual X and Y coords...
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RelativeCoordinate x, y;
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};
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#endif // JUCE_RELATIVEPOINT_H_INCLUDED
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