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authorAndrei Karas <akaras@inbox.ru>2014-02-15 18:07:17 +0300
committerAndrei Karas <akaras@inbox.ru>2014-02-15 18:38:03 +0300
commitcde42202d69e178da73c698065deca54b24054fd (patch)
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+/*
+ * The ManaPlus Client
+ * Copyright (C) 2011-2014 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* _______ __ __ __ ______ __ __ _______ __ __
+ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
+ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
+ * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+ *
+ *
+ * Per Larsson a.k.a finalman
+ * Olof Naessén a.k.a jansem/yakslem
+ *
+ * Visit: http://guichan.sourceforge.net
+ *
+ * License: (BSD)
+ * 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.
+ * 3. Neither the name of Guichan 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 GCN_SLIDER_HPP
+#define GCN_SLIDER_HPP
+
+#include "gui/base/keylistener.hpp"
+#include "gui/base/mouselistener.hpp"
+#include "gui/base/widget.hpp"
+
+namespace gcn
+{
+ /**
+ * An implementation of a slider where a user can select different values by
+ * sliding between a start value and an end value of a scale.
+ *
+ * If the selected value is changed an action event will be sent to all
+ * action listeners of the slider.
+ */
+ class Slider :
+ public Widget,
+ public MouseListener,
+ public KeyListener
+ {
+ public:
+ /**
+ * Draw orientations for the slider. A slider can be drawn vertically or
+ * horizontally.
+ */
+ enum Orientation
+ {
+ HORIZONTAL = 0,
+ VERTICAL
+ };
+
+ /**
+ * Constructor. The default start value of the slider scale is zero.
+ *
+ * @param scaleEnd The end value of the slider scale.
+ */
+ explicit Slider(const double scaleEnd = 1.0);
+
+ /**
+ * Constructor.
+ *
+ * @param scaleStart The start value of the slider scale.
+ * @param scaleEnd The end value of the slider scale.
+ */
+ Slider(const double scaleStart, const double scaleEnd);
+
+ A_DELETE_COPY(Slider)
+
+ /**
+ * Destructor.
+ */
+ virtual ~Slider()
+ { }
+
+ /**
+ * Sets the scale of the slider.
+ *
+ * @param scaleStart The start value of the scale.
+ * @param scaleEnd tThe end of value the scale.
+ * @see getScaleStart, getScaleEnd
+ */
+ void setScale(double scaleStart, double scaleEnd);
+
+ /**
+ * Gets the start value of the scale.
+ *
+ * @return The start value of the scale.
+ * @see setScaleStart, setScale
+ */
+ double getScaleStart() const;
+
+ /**
+ * Sets the start value of the scale.
+ *
+ * @param scaleStart The start value of the scale.
+ * @see getScaleStart
+ */
+ void setScaleStart(double scaleStart);
+
+ /**
+ * Gets the end value of the scale.
+ *
+ * @return The end value of the scale.
+ * @see setScaleEnd, setScale
+ */
+ double getScaleEnd() const;
+
+ /**
+ * Sets the end value of the scale.
+ *
+ * @param scaleEnd The end value of the scale.
+ * @see getScaleEnd
+ */
+ void setScaleEnd(double scaleEnd);
+
+ /**
+ * Gets the current selected value.
+ *
+ * @return The current selected value.
+ * @see setValue
+ */
+ double getValue() const;
+
+ /**
+ * Sets the current selected value.
+ *
+ * @param value The current selected value.
+ * @see getValue
+ */
+ void setValue(double value);
+
+ /**
+ * Sets the length of the marker.
+ *
+ * @param length The length for the marker.
+ * @see getMarkerLength
+ */
+ void setMarkerLength(int length);
+
+ /**
+ * Gets the length of the marker.
+ *
+ * @return The length of the marker.
+ * @see setMarkerLength
+ */
+ int getMarkerLength() const;
+
+ /**
+ * Sets the orientation of the slider. A slider can be drawn vertically
+ * or horizontally.
+ *
+ * @param orientation The orientation of the slider.
+ * @see getOrientation
+ */
+ void setOrientation(Orientation orientation);
+
+ /**
+ * Gets the orientation of the slider. A slider can be drawn vertically
+ * or horizontally.
+ *
+ * @return The orientation of the slider.
+ * @see setOrientation
+ */
+ Orientation getOrientation() const;
+
+ /**
+ * Sets the step length. The step length is used when the keys LEFT
+ * and RIGHT are pressed to step in the scale.
+ *
+ * @param length The step length.
+ * @see getStepLength
+ */
+ void setStepLength(double length);
+
+ /**
+ * Gets the step length. The step length is used when the keys LEFT
+ * and RIGHT are pressed to step in the scale.
+ *
+ * @return the step length.
+ * @see setStepLength
+ */
+ double getStepLength() const;
+
+ protected:
+ /**
+ * Converts a marker position to a value in the scale.
+ *
+ * @param position The position to convert.
+ * @return A scale value corresponding to the position.
+ * @see valueToMarkerPosition
+ */
+ virtual double markerPositionToValue(int position) const;
+
+ /**
+ * Converts a value to a marker position.
+ *
+ * @param value The value to convert.
+ * @return A marker position corresponding to the value.
+ * @see markerPositionToValue
+ */
+ virtual int valueToMarkerPosition(double value) const;
+
+ /**
+ * Gets the marker position of the current selected value.
+ *
+ * @return The marker position of the current selected value.
+ */
+ virtual int getMarkerPosition() const;
+
+ /**
+ * True if the slider is dragged, false otherwise.
+ */
+ bool mDragged;
+
+ /**
+ * Holds the current selected value.
+ */
+ double mValue;
+
+ /**
+ * Holds the step length. The step length is used when the keys LEFT
+ * and RIGHT are pressed to step in the scale.
+ */
+ double mStepLength;
+
+ /**
+ * Holds the length of the marker.
+ */
+ int mMarkerLength;
+
+ /**
+ * Holds the start value of the scale.
+ */
+ double mScaleStart;
+
+ /**
+ * Holds the end value of the scale.
+ */
+ double mScaleEnd;
+
+ /**
+ * Holds the orientation of the slider. A slider can be drawn
+ * vertically or horizontally.
+ */
+ Orientation mOrientation;
+ };
+} // namespace gcn
+
+#endif // end GCN_SLIDER_HPP