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+/* _______ __ __ __ ______ __ __ _______ __ __
+ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
+ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
+ * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * 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.
+ */
+
+/*
+ * For comments regarding functions please see the header file.
+ */
+
+#include "guichan/widgets/slider.hpp"
+
+#include "guichan/graphics.hpp"
+#include "guichan/key.hpp"
+#include "guichan/mouseinput.hpp"
+
+namespace gcn
+{
+ Slider::Slider(double scaleEnd)
+ {
+ mDragged = false;
+
+ mScaleStart = 0;
+ mScaleEnd = scaleEnd;
+
+ setFocusable(true);
+ setFrameSize(1);
+ setOrientation(HORIZONTAL);
+ setValue(0);
+ setStepLength(scaleEnd / 10);
+ setMarkerLength(10);
+
+ addMouseListener(this);
+ addKeyListener(this);
+ }
+
+ Slider::Slider(double scaleStart, double scaleEnd)
+ {
+ mDragged = false;
+
+ mScaleStart = scaleStart;
+ mScaleEnd = scaleEnd;
+
+ setFocusable(true);
+ setFrameSize(1);
+ setOrientation(HORIZONTAL);
+ setValue(scaleStart);
+ setStepLength((scaleEnd - scaleStart)/ 10);
+ setMarkerLength(10);
+
+ addMouseListener(this);
+ addKeyListener(this);
+ }
+
+ void Slider::setScale(double scaleStart, double scaleEnd)
+ {
+ mScaleStart = scaleStart;
+ mScaleEnd = scaleEnd;
+ }
+
+ double Slider::getScaleStart() const
+ {
+ return mScaleStart;
+ }
+
+ void Slider::setScaleStart(double scaleStart)
+ {
+ mScaleStart = scaleStart;
+ }
+
+ double Slider::getScaleEnd() const
+ {
+ return mScaleEnd;
+ }
+
+ void Slider::setScaleEnd(double scaleEnd)
+ {
+ mScaleEnd = scaleEnd;
+ }
+
+ void Slider::draw(gcn::Graphics* graphics)
+ {
+ Color shadowColor = getBaseColor() - 0x101010;
+ int alpha = getBaseColor().a;
+ shadowColor.a = alpha;
+
+ graphics->setColor(shadowColor);
+ graphics->fillRectangle(gcn::Rectangle(0,0,getWidth(),getHeight()));
+
+ drawMarker(graphics);
+ }
+
+ void Slider::drawMarker(gcn::Graphics* graphics)
+ {
+ gcn::Color faceColor = getBaseColor();
+ Color highlightColor, shadowColor;
+ int alpha = getBaseColor().a;
+ highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ graphics->setColor(faceColor);
+
+ if (getOrientation() == HORIZONTAL)
+ {
+ int v = getMarkerPosition();
+ graphics->fillRectangle(gcn::Rectangle(v + 1, 1, getMarkerLength() - 2, getHeight() - 2));
+ graphics->setColor(highlightColor);
+ graphics->drawLine(v, 0, v + getMarkerLength() - 1,0);
+ graphics->drawLine(v, 0, v, getHeight() - 1);
+ graphics->setColor(shadowColor);
+ graphics->drawLine(v + getMarkerLength() - 1, 1, v + getMarkerLength() - 1, getHeight() - 1);
+ graphics->drawLine(v + 1, getHeight() - 1, v + getMarkerLength() - 1, getHeight() - 1);
+
+ if (isFocused())
+ {
+ graphics->setColor(getForegroundColor());
+ graphics->drawRectangle(Rectangle(v + 2, 2, getMarkerLength() - 4, getHeight() - 4));
+ }
+ }
+ else
+ {
+ int v = (getHeight() - getMarkerLength()) - getMarkerPosition();
+ graphics->fillRectangle(gcn::Rectangle(1, v + 1, getWidth() - 2, getMarkerLength() - 2));
+ graphics->setColor(highlightColor);
+ graphics->drawLine(0, v, 0, v + getMarkerLength() - 1);
+ graphics->drawLine(0, v, getWidth() - 1, v);
+ graphics->setColor(shadowColor);
+ graphics->drawLine(1, v + getMarkerLength() - 1, getWidth() - 1, v + getMarkerLength() - 1);
+ graphics->drawLine(getWidth() - 1, v + 1, getWidth() - 1, v + getMarkerLength() - 1);
+
+ if (isFocused())
+ {
+ graphics->setColor(getForegroundColor());
+ graphics->drawRectangle(Rectangle(2, v + 2, getWidth() - 4, getMarkerLength() - 4));
+ }
+ }
+ }
+
+ void Slider::mousePressed(MouseEvent& mouseEvent)
+ {
+ if (mouseEvent.getButton() == gcn::MouseEvent::LEFT
+ && mouseEvent.getX() >= 0
+ && mouseEvent.getX() <= getWidth()
+ && mouseEvent.getY() >= 0
+ && mouseEvent.getY() <= getHeight())
+ {
+ if (getOrientation() == HORIZONTAL)
+ {
+ setValue(markerPositionToValue(mouseEvent.getX() - getMarkerLength() / 2));
+ }
+ else
+ {
+ setValue(markerPositionToValue(getHeight() - mouseEvent.getY() - getMarkerLength() / 2));
+ }
+
+ distributeActionEvent();
+ }
+ }
+
+ void Slider::mouseDragged(MouseEvent& mouseEvent)
+ {
+ if (getOrientation() == HORIZONTAL)
+ {
+ setValue(markerPositionToValue(mouseEvent.getX() - getMarkerLength() / 2));
+ }
+ else
+ {
+ setValue(markerPositionToValue(getHeight() - mouseEvent.getY() - getMarkerLength() / 2));
+ }
+
+ distributeActionEvent();
+
+ mouseEvent.consume();
+ }
+
+ void Slider::setValue(double value)
+ {
+ if (value > getScaleEnd())
+ {
+ mValue = getScaleEnd();
+ return;
+ }
+
+ if (value < getScaleStart())
+ {
+ mValue = getScaleStart();
+ return;
+ }
+
+ mValue = value;
+ }
+
+ double Slider::getValue() const
+ {
+ return mValue;
+ }
+
+ int Slider::getMarkerLength() const
+ {
+ return mMarkerLength;
+ }
+
+ void Slider::setMarkerLength(int length)
+ {
+ mMarkerLength = length;
+ }
+
+ void Slider::keyPressed(KeyEvent& keyEvent)
+ {
+ Key key = keyEvent.getKey();
+
+ if (getOrientation() == HORIZONTAL)
+ {
+ if (key.getValue() == Key::RIGHT)
+ {
+ setValue(getValue() + getStepLength());
+ distributeActionEvent();
+ keyEvent.consume();
+ }
+ else if (key.getValue() == Key::LEFT)
+ {
+ setValue(getValue() - getStepLength());
+ distributeActionEvent();
+ keyEvent.consume();
+ }
+ }
+ else
+ {
+ if (key.getValue() == Key::UP)
+ {
+ setValue(getValue() + getStepLength());
+ distributeActionEvent();
+ keyEvent.consume();
+ }
+ else if (key.getValue() == Key::DOWN)
+ {
+ setValue(getValue() - getStepLength());
+ distributeActionEvent();
+ keyEvent.consume();
+ }
+ }
+ }
+
+ void Slider::setOrientation(Slider::Orientation orientation)
+ {
+ mOrientation = orientation;
+ }
+
+ Slider::Orientation Slider::getOrientation() const
+ {
+ return mOrientation;
+ }
+
+ double Slider::markerPositionToValue(int v) const
+ {
+ int w;
+ if (getOrientation() == HORIZONTAL)
+ {
+ w = getWidth();
+ }
+ else
+ {
+ w = getHeight();
+ }
+
+ double pos = v / ((double)w - getMarkerLength());
+ return (1.0 - pos) * getScaleStart() + pos * getScaleEnd();
+
+ }
+
+ int Slider::valueToMarkerPosition(double value) const
+ {
+ int v;
+ if (getOrientation() == HORIZONTAL)
+ {
+ v = getWidth();
+ }
+ else
+ {
+ v = getHeight();
+ }
+
+ int w = (int)((v - getMarkerLength())
+ * (value - getScaleStart())
+ / (getScaleEnd() - getScaleStart()));
+
+ if (w < 0)
+ {
+ return 0;
+ }
+
+ if (w > v - getMarkerLength())
+ {
+ return v - getMarkerLength();
+ }
+
+ return w;
+ }
+
+ void Slider::setStepLength(double length)
+ {
+ mStepLength = length;
+ }
+
+ double Slider::getStepLength() const
+ {
+ return mStepLength;
+ }
+
+ int Slider::getMarkerPosition() const
+ {
+ return valueToMarkerPosition(getValue());
+ }
+
+ void Slider::mouseWheelMovedUp(MouseEvent& mouseEvent)
+ {
+ setValue(getValue() + getStepLength());
+ distributeActionEvent();
+
+ mouseEvent.consume();
+ }
+
+ void Slider::mouseWheelMovedDown(MouseEvent& mouseEvent)
+ {
+ setValue(getValue() - getStepLength());
+ distributeActionEvent();
+
+ mouseEvent.consume();
+ }
+}