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Diffstat (limited to 'src/guichan/widgets/slider.cpp')
| -rw-r--r-- | src/guichan/widgets/slider.cpp | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/src/guichan/widgets/slider.cpp b/src/guichan/widgets/slider.cpp new file mode 100644 index 000000000..a32209124 --- /dev/null +++ b/src/guichan/widgets/slider.cpp @@ -0,0 +1,369 @@ +/* _______ __ __ __ ______ __ __ _______ __ __ + * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ + * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / + * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / + * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / + * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / + * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ + * + * 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(); + } +} |