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Diffstat (limited to 'src/guichan/widgets/slider.hpp')
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diff --git a/src/guichan/widgets/slider.hpp b/src/guichan/widgets/slider.hpp new file mode 100644 index 000000000..eddf02c50 --- /dev/null +++ b/src/guichan/widgets/slider.hpp @@ -0,0 +1,300 @@ +/* _______ __ __ __ ______ __ __ _______ __ __ + * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ + * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / + * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / + * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / + * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / + * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ + * + * 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 "guichan/keylistener.hpp" +#include "guichan/mouselistener.hpp" +#include "guichan/platform.hpp" +#include "guichan/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 GCN_CORE_DECLSPEC 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. + */ + Slider(double scaleEnd = 1.0); + + /** + * Constructor. + * + * @param scaleStart The start value of the slider scale. + * @param scaleEnd The end value of the slider scale. + */ + Slider(double scaleStart, double scaleEnd); + + /** + * 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; + + + // Inherited from Widget + + virtual void draw(Graphics* graphics); + + + // Inherited from MouseListener. + + virtual void mousePressed(MouseEvent& mouseEvent); + + virtual void mouseDragged(MouseEvent& mouseEvent); + + virtual void mouseWheelMovedUp(MouseEvent& mouseEvent); + + virtual void mouseWheelMovedDown(MouseEvent& mouseEvent); + + + // Inherited from KeyListener + + virtual void keyPressed(KeyEvent& keyEvent); + + protected: + /** + * Draws the marker. + * + * @param graphics A graphics object to draw with. + */ + virtual void drawMarker(gcn::Graphics* graphics); + + /** + * 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; + }; +} + +#endif // end GCN_SLIDER_HPP |