From 968664755dc84273ceb97996c8dc363ecf7aef82 Mon Sep 17 00:00:00 2001 From: jules Date: Mon, 6 Oct 2008 17:34:21 +0000 Subject: [PATCH] --- .../gui/components/controls/juce_Slider.cpp | 2760 +++++++++-------- 1 file changed, 1392 insertions(+), 1368 deletions(-) diff --git a/src/juce_appframework/gui/components/controls/juce_Slider.cpp b/src/juce_appframework/gui/components/controls/juce_Slider.cpp index 4bdffa7faa..def3b94af0 100644 --- a/src/juce_appframework/gui/components/controls/juce_Slider.cpp +++ b/src/juce_appframework/gui/components/controls/juce_Slider.cpp @@ -1,1368 +1,1392 @@ -/* - ============================================================================== - - This file is part of the JUCE library - "Jules' Utility Class Extensions" - Copyright 2004-7 by Raw Material Software ltd. - - ------------------------------------------------------------------------------ - - JUCE can be redistributed and/or modified under the terms of the - GNU General Public License, as published by the Free Software Foundation; - either version 2 of the License, or (at your option) any later version. - - JUCE 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 JUCE; if not, visit www.gnu.org/licenses or write to the - Free Software Foundation, Inc., 59 Temple Place, Suite 330, - Boston, MA 02111-1307 USA - - ------------------------------------------------------------------------------ - - If you'd like to release a closed-source product which uses JUCE, commercial - licenses are also available: visit www.rawmaterialsoftware.com/juce for - more information. - - ============================================================================== -*/ - -#include "../../../../juce_core/basics/juce_StandardHeader.h" - -BEGIN_JUCE_NAMESPACE - -#include "juce_Slider.h" -#include "../lookandfeel/juce_LookAndFeel.h" -#include "../menus/juce_PopupMenu.h" -#include "../juce_Desktop.h" -#include "../special/juce_BubbleComponent.h" -#include "../../../../juce_core/text/juce_LocalisedStrings.h" - - -//============================================================================== -class SliderPopupDisplayComponent : public BubbleComponent -{ -public: - //============================================================================== - SliderPopupDisplayComponent (Slider* const owner_) - : owner (owner_), - font (15.0f, Font::bold) - { - setAlwaysOnTop (true); - } - - ~SliderPopupDisplayComponent() - { - } - - void paintContent (Graphics& g, int w, int h) - { - g.setFont (font); - g.setColour (Colours::black); - - g.drawFittedText (text, 0, 0, w, h, Justification::centred, 1); - } - - void getContentSize (int& w, int& h) - { - w = font.getStringWidth (text) + 18; - h = (int) (font.getHeight() * 1.6f); - } - - void updatePosition (const String& newText) - { - if (text != newText) - { - text = newText; - repaint(); - } - - BubbleComponent::setPosition (owner); - } - - //============================================================================== - juce_UseDebuggingNewOperator - -private: - Slider* owner; - Font font; - String text; - - SliderPopupDisplayComponent (const SliderPopupDisplayComponent&); - const SliderPopupDisplayComponent& operator= (const SliderPopupDisplayComponent&); -}; - -//============================================================================== -Slider::Slider (const String& name) - : Component (name), - listeners (2), - currentValue (0.0), - valueMin (0.0), - valueMax (0.0), - minimum (0), - maximum (10), - interval (0), - skewFactor (1.0), - velocityModeSensitivity (1.0), - velocityModeOffset (0.0), - velocityModeThreshold (1), - rotaryStart (float_Pi * 1.2f), - rotaryEnd (float_Pi * 2.8f), - numDecimalPlaces (7), - sliderRegionStart (0), - sliderRegionSize (1), - sliderBeingDragged (-1), - pixelsForFullDragExtent (250), - style (LinearHorizontal), - textBoxPos (TextBoxLeft), - textBoxWidth (80), - textBoxHeight (20), - incDecButtonMode (incDecButtonsNotDraggable), - editableText (true), - doubleClickToValue (false), - isVelocityBased (false), - userKeyOverridesVelocity (true), - rotaryStop (true), - incDecButtonsSideBySide (false), - sendChangeOnlyOnRelease (false), - popupDisplayEnabled (false), - menuEnabled (false), - menuShown (false), - scrollWheelEnabled (true), - snapsToMousePos (true), - valueBox (0), - incButton (0), - decButton (0), - popupDisplay (0), - parentForPopupDisplay (0) -{ - setWantsKeyboardFocus (false); - setRepaintsOnMouseActivity (true); - - lookAndFeelChanged(); - updateText(); -} - -Slider::~Slider() -{ - deleteAndZero (popupDisplay); - deleteAllChildren(); -} - - -//============================================================================== -void Slider::handleAsyncUpdate() -{ - cancelPendingUpdate(); - - for (int i = listeners.size(); --i >= 0;) - { - ((SliderListener*) listeners.getUnchecked (i))->sliderValueChanged (this); - i = jmin (i, listeners.size()); - } -} - -void Slider::sendDragStart() -{ - startedDragging(); - - for (int i = listeners.size(); --i >= 0;) - { - ((SliderListener*) listeners.getUnchecked (i))->sliderDragStarted (this); - i = jmin (i, listeners.size()); - } -} - -void Slider::sendDragEnd() -{ - stoppedDragging(); - - sliderBeingDragged = -1; - - for (int i = listeners.size(); --i >= 0;) - { - ((SliderListener*) listeners.getUnchecked (i))->sliderDragEnded (this); - i = jmin (i, listeners.size()); - } -} - -void Slider::addListener (SliderListener* const listener) throw() -{ - jassert (listener != 0); - if (listener != 0) - listeners.add (listener); -} - -void Slider::removeListener (SliderListener* const listener) throw() -{ - listeners.removeValue (listener); -} - -//============================================================================== -void Slider::setSliderStyle (const SliderStyle newStyle) -{ - if (style != newStyle) - { - style = newStyle; - repaint(); - lookAndFeelChanged(); - } -} - -void Slider::setRotaryParameters (const float startAngleRadians, - const float endAngleRadians, - const bool stopAtEnd) -{ - // make sure the values are sensible.. - jassert (rotaryStart >= 0 && rotaryEnd >= 0); - jassert (rotaryStart < float_Pi * 4.0f && rotaryEnd < float_Pi * 4.0f); - jassert (rotaryStart < rotaryEnd); - - rotaryStart = startAngleRadians; - rotaryEnd = endAngleRadians; - rotaryStop = stopAtEnd; -} - -void Slider::setVelocityBasedMode (const bool velBased) throw() -{ - isVelocityBased = velBased; -} - -void Slider::setVelocityModeParameters (const double sensitivity, - const int threshold, - const double offset, - const bool userCanPressKeyToSwapMode) throw() -{ - jassert (threshold >= 0); - jassert (sensitivity > 0); - jassert (offset >= 0); - - velocityModeSensitivity = sensitivity; - velocityModeOffset = offset; - velocityModeThreshold = threshold; - userKeyOverridesVelocity = userCanPressKeyToSwapMode; -} - -void Slider::setSkewFactor (const double factor) throw() -{ - skewFactor = factor; -} - -void Slider::setSkewFactorFromMidPoint (const double sliderValueToShowAtMidPoint) throw() -{ - if (maximum > minimum) - skewFactor = log (0.5) / log ((sliderValueToShowAtMidPoint - minimum) - / (maximum - minimum)); -} - -void Slider::setMouseDragSensitivity (const int distanceForFullScaleDrag) -{ - jassert (distanceForFullScaleDrag > 0); - - pixelsForFullDragExtent = distanceForFullScaleDrag; -} - -void Slider::setIncDecButtonsMode (const IncDecButtonMode mode) -{ - if (incDecButtonMode != mode) - { - incDecButtonMode = mode; - lookAndFeelChanged(); - } -} - -void Slider::setTextBoxStyle (const TextEntryBoxPosition newPosition, - const bool isReadOnly, - const int textEntryBoxWidth, - const int textEntryBoxHeight) -{ - textBoxPos = newPosition; - editableText = ! isReadOnly; - textBoxWidth = textEntryBoxWidth; - textBoxHeight = textEntryBoxHeight; - - repaint(); - lookAndFeelChanged(); -} - -void Slider::setTextBoxIsEditable (const bool shouldBeEditable) throw() -{ - editableText = shouldBeEditable; - - if (valueBox != 0) - valueBox->setEditable (shouldBeEditable && isEnabled()); -} - -void Slider::showTextBox() -{ - jassert (editableText); // this should probably be avoided in read-only sliders. - - if (valueBox != 0) - valueBox->showEditor(); -} - -void Slider::hideTextBox (const bool discardCurrentEditorContents) -{ - if (valueBox != 0) - { - valueBox->hideEditor (discardCurrentEditorContents); - - if (discardCurrentEditorContents) - updateText(); - } -} - -void Slider::setChangeNotificationOnlyOnRelease (const bool onlyNotifyOnRelease) throw() -{ - sendChangeOnlyOnRelease = onlyNotifyOnRelease; -} - -void Slider::setSliderSnapsToMousePosition (const bool shouldSnapToMouse) throw() -{ - snapsToMousePos = shouldSnapToMouse; -} - -void Slider::setPopupDisplayEnabled (const bool enabled, - Component* const parentComponentToUse) throw() -{ - popupDisplayEnabled = enabled; - parentForPopupDisplay = parentComponentToUse; -} - -//============================================================================== -void Slider::colourChanged() -{ - lookAndFeelChanged(); -} - -void Slider::lookAndFeelChanged() -{ - const String previousTextBoxContent (valueBox != 0 ? valueBox->getText() - : getTextFromValue (currentValue)); - - deleteAllChildren(); - valueBox = 0; - - LookAndFeel& lf = getLookAndFeel(); - - if (textBoxPos != NoTextBox) - { - addAndMakeVisible (valueBox = getLookAndFeel().createSliderTextBox (*this)); - - valueBox->setWantsKeyboardFocus (false); - valueBox->setText (previousTextBoxContent, false); - - valueBox->setEditable (editableText && isEnabled()); - valueBox->addListener (this); - - if (style == LinearBar) - valueBox->addMouseListener (this, false); - } - - if (style == IncDecButtons) - { - addAndMakeVisible (incButton = lf.createSliderButton (true)); - incButton->addButtonListener (this); - - addAndMakeVisible (decButton = lf.createSliderButton (false)); - decButton->addButtonListener (this); - - if (incDecButtonMode != incDecButtonsNotDraggable) - { - incButton->addMouseListener (this, false); - decButton->addMouseListener (this, false); - } - else - { - incButton->setRepeatSpeed (300, 100, 20); - incButton->addMouseListener (decButton, false); - - decButton->setRepeatSpeed (300, 100, 20); - decButton->addMouseListener (incButton, false); - } - } - - setComponentEffect (lf.getSliderEffect()); - - resized(); - repaint(); -} - -//============================================================================== -void Slider::setRange (const double newMin, - const double newMax, - const double newInt) -{ - if (minimum != newMin - || maximum != newMax - || interval != newInt) - { - minimum = newMin; - maximum = newMax; - interval = newInt; - - // figure out the number of DPs needed to display all values at this - // interval setting. - numDecimalPlaces = 7; - - if (newInt != 0) - { - int v = abs ((int) (newInt * 10000000)); - - while ((v % 10) == 0) - { - --numDecimalPlaces; - v /= 10; - } - } - - // keep the current values inside the new range.. - if (style != TwoValueHorizontal && style != TwoValueVertical) - { - setValue (currentValue, false, false); - } - else - { - setMinValue (getMinValue(), false, false); - setMaxValue (getMaxValue(), false, false); - } - - updateText(); - } -} - -void Slider::triggerChangeMessage (const bool synchronous) -{ - if (synchronous) - handleAsyncUpdate(); - else - triggerAsyncUpdate(); - - valueChanged(); -} - -double Slider::getValue() const throw() -{ - // for a two-value style slider, you should use the getMinValue() and getMaxValue() - // methods to get the two values. - jassert (style != TwoValueHorizontal && style != TwoValueVertical); - - return currentValue; -} - -void Slider::setValue (double newValue, - const bool sendUpdateMessage, - const bool sendMessageSynchronously) -{ - // for a two-value style slider, you should use the setMinValue() and setMaxValue() - // methods to set the two values. - jassert (style != TwoValueHorizontal && style != TwoValueVertical); - - newValue = constrainedValue (newValue); - - if (style == ThreeValueHorizontal || style == ThreeValueVertical) - { - jassert (valueMin <= valueMax); - newValue = jlimit (valueMin, valueMax, newValue); - } - - if (currentValue != newValue) - { - if (valueBox != 0) - valueBox->hideEditor (true); - - currentValue = newValue; - updateText(); - repaint(); - - if (popupDisplay != 0) - { - ((SliderPopupDisplayComponent*) popupDisplay)->updatePosition (getTextFromValue (currentValue)); - popupDisplay->repaint(); - } - - if (sendUpdateMessage) - triggerChangeMessage (sendMessageSynchronously); - } -} - -double Slider::getMinValue() const throw() -{ - // The minimum value only applies to sliders that are in two- or three-value mode. - jassert (style == TwoValueHorizontal || style == TwoValueVertical - || style == ThreeValueHorizontal || style == ThreeValueVertical); - - return valueMin; -} - -double Slider::getMaxValue() const throw() -{ - // The maximum value only applies to sliders that are in two- or three-value mode. - jassert (style == TwoValueHorizontal || style == TwoValueVertical - || style == ThreeValueHorizontal || style == ThreeValueVertical); - - return valueMax; -} - -void Slider::setMinValue (double newValue, const bool sendUpdateMessage, const bool sendMessageSynchronously) -{ - // The minimum value only applies to sliders that are in two- or three-value mode. - jassert (style == TwoValueHorizontal || style == TwoValueVertical - || style == ThreeValueHorizontal || style == ThreeValueVertical); - - newValue = constrainedValue (newValue); - - if (style == TwoValueHorizontal || style == TwoValueVertical) - newValue = jmin (valueMax, newValue); - else - newValue = jmin (currentValue, newValue); - - if (valueMin != newValue) - { - valueMin = newValue; - repaint(); - - if (popupDisplay != 0) - { - ((SliderPopupDisplayComponent*) popupDisplay)->updatePosition (getTextFromValue (valueMin)); - popupDisplay->repaint(); - } - - if (sendUpdateMessage) - triggerChangeMessage (sendMessageSynchronously); - } -} - -void Slider::setMaxValue (double newValue, const bool sendUpdateMessage, const bool sendMessageSynchronously) -{ - // The maximum value only applies to sliders that are in two- or three-value mode. - jassert (style == TwoValueHorizontal || style == TwoValueVertical - || style == ThreeValueHorizontal || style == ThreeValueVertical); - - newValue = constrainedValue (newValue); - - if (style == TwoValueHorizontal || style == TwoValueVertical) - newValue = jmax (valueMin, newValue); - else - newValue = jmax (currentValue, newValue); - - if (valueMax != newValue) - { - valueMax = newValue; - repaint(); - - if (popupDisplay != 0) - { - ((SliderPopupDisplayComponent*) popupDisplay)->updatePosition (getTextFromValue (valueMax)); - popupDisplay->repaint(); - } - - if (sendUpdateMessage) - triggerChangeMessage (sendMessageSynchronously); - } -} - -void Slider::setDoubleClickReturnValue (const bool isDoubleClickEnabled, - const double valueToSetOnDoubleClick) throw() -{ - doubleClickToValue = isDoubleClickEnabled; - doubleClickReturnValue = valueToSetOnDoubleClick; -} - -double Slider::getDoubleClickReturnValue (bool& isEnabled_) const throw() -{ - isEnabled_ = doubleClickToValue; - return doubleClickReturnValue; -} - -void Slider::updateText() -{ - if (valueBox != 0) - valueBox->setText (getTextFromValue (currentValue), false); -} - -void Slider::setTextValueSuffix (const String& suffix) -{ - if (textSuffix != suffix) - { - textSuffix = suffix; - updateText(); - } -} - -const String Slider::getTextFromValue (double v) -{ - if (numDecimalPlaces > 0) - return String (v, numDecimalPlaces) + textSuffix; - else - return String (roundDoubleToInt (v)) + textSuffix; -} - -double Slider::getValueFromText (const String& text) -{ - String t (text.trimStart()); - - if (t.endsWith (textSuffix)) - t = t.substring (0, t.length() - textSuffix.length()); - - while (t.startsWithChar (T('+'))) - t = t.substring (1).trimStart(); - - return t.initialSectionContainingOnly (T("0123456789.,-")) - .getDoubleValue(); -} - -double Slider::proportionOfLengthToValue (double proportion) -{ - if (skewFactor != 1.0 && proportion > 0.0) - proportion = exp (log (proportion) / skewFactor); - - return minimum + (maximum - minimum) * proportion; -} - -double Slider::valueToProportionOfLength (double value) -{ - const double n = (value - minimum) / (maximum - minimum); - - return skewFactor == 1.0 ? n : pow (n, skewFactor); -} - -double Slider::snapValue (double attemptedValue, const bool) -{ - return attemptedValue; -} - -//============================================================================== -void Slider::startedDragging() -{ -} - -void Slider::stoppedDragging() -{ -} - -void Slider::valueChanged() -{ -} - -//============================================================================== -void Slider::enablementChanged() -{ - repaint(); -} - -void Slider::setPopupMenuEnabled (const bool menuEnabled_) throw() -{ - menuEnabled = menuEnabled_; -} - -void Slider::setScrollWheelEnabled (const bool enabled) throw() -{ - scrollWheelEnabled = enabled; -} - -//============================================================================== -void Slider::labelTextChanged (Label* label) -{ - const double newValue = snapValue (getValueFromText (label->getText()), false); - - if (getValue() != newValue) - { - sendDragStart(); - setValue (newValue, true, true); - sendDragEnd(); - } - - updateText(); // force a clean-up of the text, needed in case setValue() hasn't done this. -} - -void Slider::buttonClicked (Button* button) -{ - if (style == IncDecButtons) - { - sendDragStart(); - - if (button == incButton) - setValue (snapValue (getValue() + interval, false), true, true); - else if (button == decButton) - setValue (snapValue (getValue() - interval, false), true, true); - - sendDragEnd(); - } -} - -//============================================================================== -double Slider::constrainedValue (double value) const throw() -{ - if (interval > 0) - value = minimum + interval * floor ((value - minimum) / interval + 0.5); - - if (value <= minimum || maximum <= minimum) - value = minimum; - else if (value >= maximum) - value = maximum; - - return value; -} - -float Slider::getLinearSliderPos (const double value) -{ - double sliderPosProportional; - - if (maximum > minimum) - { - if (value < minimum) - { - sliderPosProportional = 0.0; - } - else if (value > maximum) - { - sliderPosProportional = 1.0; - } - else - { - sliderPosProportional = valueToProportionOfLength (value); - jassert (sliderPosProportional >= 0 && sliderPosProportional <= 1.0); - } - } - else - { - sliderPosProportional = 0.5; - } - - if (isVertical() || style == IncDecButtons) - sliderPosProportional = 1.0 - sliderPosProportional; - - return (float) (sliderRegionStart + sliderPosProportional * sliderRegionSize); -} - -bool Slider::isHorizontal() const throw() -{ - return style == LinearHorizontal - || style == LinearBar - || style == TwoValueHorizontal - || style == ThreeValueHorizontal; -} - -bool Slider::isVertical() const throw() -{ - return style == LinearVertical - || style == TwoValueVertical - || style == ThreeValueVertical; -} - -bool Slider::incDecDragDirectionIsHorizontal() const throw() -{ - return incDecButtonMode == incDecButtonsDraggable_Horizontal - || (incDecButtonMode == incDecButtonsDraggable_AutoDirection && incDecButtonsSideBySide); -} - -float Slider::getPositionOfValue (const double value) -{ - if (isHorizontal() || isVertical()) - { - return getLinearSliderPos (value); - } - else - { - jassertfalse // not a valid call on a slider that doesn't work linearly! - return 0.0f; - } -} - -//============================================================================== -void Slider::paint (Graphics& g) -{ - if (style != IncDecButtons) - { - if (style == Rotary || style == RotaryHorizontalDrag || style == RotaryVerticalDrag) - { - const float sliderPos = (float) valueToProportionOfLength (currentValue); - jassert (sliderPos >= 0 && sliderPos <= 1.0f); - - getLookAndFeel().drawRotarySlider (g, - sliderRect.getX(), - sliderRect.getY(), - sliderRect.getWidth(), - sliderRect.getHeight(), - sliderPos, - rotaryStart, rotaryEnd, - *this); - } - else - { - getLookAndFeel().drawLinearSlider (g, - sliderRect.getX(), - sliderRect.getY(), - sliderRect.getWidth(), - sliderRect.getHeight(), - getLinearSliderPos (currentValue), - getLinearSliderPos (valueMin), - getLinearSliderPos (valueMax), - style, - *this); - } - - if (style == LinearBar && valueBox == 0) - { - g.setColour (findColour (Slider::textBoxOutlineColourId)); - g.drawRect (0, 0, getWidth(), getHeight(), 1); - } - } -} - -void Slider::resized() -{ - int minXSpace = 0; - int minYSpace = 0; - - if (textBoxPos == TextBoxLeft || textBoxPos == TextBoxRight) - minXSpace = 30; - else - minYSpace = 15; - - const int tbw = jmax (0, jmin (textBoxWidth, getWidth() - minXSpace)); - const int tbh = jmax (0, jmin (textBoxHeight, getHeight() - minYSpace)); - - if (style == LinearBar) - { - if (valueBox != 0) - valueBox->setBounds (0, 0, getWidth(), getHeight()); - } - else - { - if (textBoxPos == NoTextBox) - { - sliderRect.setBounds (0, 0, getWidth(), getHeight()); - } - else if (textBoxPos == TextBoxLeft) - { - valueBox->setBounds (0, (getHeight() - tbh) / 2, tbw, tbh); - sliderRect.setBounds (tbw, 0, getWidth() - tbw, getHeight()); - } - else if (textBoxPos == TextBoxRight) - { - valueBox->setBounds (getWidth() - tbw, (getHeight() - tbh) / 2, tbw, tbh); - sliderRect.setBounds (0, 0, getWidth() - tbw, getHeight()); - } - else if (textBoxPos == TextBoxAbove) - { - valueBox->setBounds ((getWidth() - tbw) / 2, 0, tbw, tbh); - sliderRect.setBounds (0, tbh, getWidth(), getHeight() - tbh); - } - else if (textBoxPos == TextBoxBelow) - { - valueBox->setBounds ((getWidth() - tbw) / 2, getHeight() - tbh, tbw, tbh); - sliderRect.setBounds (0, 0, getWidth(), getHeight() - tbh); - } - } - - const int indent = getLookAndFeel().getSliderThumbRadius (*this); - - if (style == LinearBar) - { - const int barIndent = 1; - sliderRegionStart = barIndent; - sliderRegionSize = getWidth() - barIndent * 2; - - sliderRect.setBounds (sliderRegionStart, barIndent, - sliderRegionSize, getHeight() - barIndent * 2); - } - else if (isHorizontal()) - { - sliderRegionStart = sliderRect.getX() + indent; - sliderRegionSize = jmax (1, sliderRect.getWidth() - indent * 2); - - sliderRect.setBounds (sliderRegionStart, sliderRect.getY(), - sliderRegionSize, sliderRect.getHeight()); - } - else if (isVertical()) - { - sliderRegionStart = sliderRect.getY() + indent; - sliderRegionSize = jmax (1, sliderRect.getHeight() - indent * 2); - - sliderRect.setBounds (sliderRect.getX(), sliderRegionStart, - sliderRect.getWidth(), sliderRegionSize); - } - else - { - sliderRegionStart = 0; - sliderRegionSize = 100; - } - - if (style == IncDecButtons) - { - Rectangle buttonRect (sliderRect); - - if (textBoxPos == TextBoxLeft || textBoxPos == TextBoxRight) - buttonRect.expand (-2, 0); - else - buttonRect.expand (0, -2); - - incDecButtonsSideBySide = buttonRect.getWidth() > buttonRect.getHeight(); - - if (incDecButtonsSideBySide) - { - decButton->setBounds (buttonRect.getX(), - buttonRect.getY(), - buttonRect.getWidth() / 2, - buttonRect.getHeight()); - - decButton->setConnectedEdges (Button::ConnectedOnRight); - - incButton->setBounds (buttonRect.getCentreX(), - buttonRect.getY(), - buttonRect.getWidth() / 2, - buttonRect.getHeight()); - - incButton->setConnectedEdges (Button::ConnectedOnLeft); - } - else - { - incButton->setBounds (buttonRect.getX(), - buttonRect.getY(), - buttonRect.getWidth(), - buttonRect.getHeight() / 2); - - incButton->setConnectedEdges (Button::ConnectedOnBottom); - - decButton->setBounds (buttonRect.getX(), - buttonRect.getCentreY(), - buttonRect.getWidth(), - buttonRect.getHeight() / 2); - - decButton->setConnectedEdges (Button::ConnectedOnTop); - } - } -} - -void Slider::focusOfChildComponentChanged (FocusChangeType) -{ - repaint(); -} - -void Slider::mouseDown (const MouseEvent& e) -{ - mouseWasHidden = false; - incDecDragged = false; - - if (isEnabled()) - { - if (e.mods.isPopupMenu() && menuEnabled) - { - menuShown = true; - - PopupMenu m; - m.addItem (1, TRANS ("velocity-sensitive mode"), true, isVelocityBased); - m.addSeparator(); - - if (style == Rotary || style == RotaryHorizontalDrag || style == RotaryVerticalDrag) - { - PopupMenu rotaryMenu; - rotaryMenu.addItem (2, TRANS ("use circular dragging"), true, style == Rotary); - rotaryMenu.addItem (3, TRANS ("use left-right dragging"), true, style == RotaryHorizontalDrag); - rotaryMenu.addItem (4, TRANS ("use up-down dragging"), true, style == RotaryVerticalDrag); - - m.addSubMenu (TRANS ("rotary mode"), rotaryMenu); - } - - const int r = m.show(); - - if (r == 1) - { - setVelocityBasedMode (! isVelocityBased); - } - else if (r == 2) - { - setSliderStyle (Rotary); - } - else if (r == 3) - { - setSliderStyle (RotaryHorizontalDrag); - } - else if (r == 4) - { - setSliderStyle (RotaryVerticalDrag); - } - } - else if (maximum > minimum) - { - menuShown = false; - - if (valueBox != 0) - valueBox->hideEditor (true); - - sliderBeingDragged = 0; - - if (style == TwoValueHorizontal - || style == TwoValueVertical - || style == ThreeValueHorizontal - || style == ThreeValueVertical) - { - const float mousePos = (float) (isVertical() ? e.y : e.x); - - const float normalPosDistance = fabsf (getLinearSliderPos (currentValue) - mousePos); - const float minPosDistance = fabsf (getLinearSliderPos (valueMin) - 0.1f - mousePos); - const float maxPosDistance = fabsf (getLinearSliderPos (valueMax) + 0.1f - mousePos); - - if (style == TwoValueHorizontal || style == TwoValueVertical) - { - if (maxPosDistance <= minPosDistance) - sliderBeingDragged = 2; - else - sliderBeingDragged = 1; - } - else if (style == ThreeValueHorizontal || style == ThreeValueVertical) - { - if (normalPosDistance >= minPosDistance && maxPosDistance >= minPosDistance) - sliderBeingDragged = 1; - else if (normalPosDistance >= maxPosDistance) - sliderBeingDragged = 2; - } - } - - minMaxDiff = valueMax - valueMin; - - mouseXWhenLastDragged = e.x; - mouseYWhenLastDragged = e.y; - lastAngle = rotaryStart + (rotaryEnd - rotaryStart) - * valueToProportionOfLength (currentValue); - - if (sliderBeingDragged == 2) - valueWhenLastDragged = valueMax; - else if (sliderBeingDragged == 1) - valueWhenLastDragged = valueMin; - else - valueWhenLastDragged = currentValue; - - valueOnMouseDown = valueWhenLastDragged; - - if (popupDisplayEnabled) - { - SliderPopupDisplayComponent* const popup = new SliderPopupDisplayComponent (this); - popupDisplay = popup; - - if (parentForPopupDisplay != 0) - { - parentForPopupDisplay->addChildComponent (popup); - } - else - { - popup->addToDesktop (0); - } - - popup->setVisible (true); - } - - sendDragStart(); - - mouseDrag (e); - } - } -} - -void Slider::mouseUp (const MouseEvent&) -{ - if (isEnabled() - && (! menuShown) - && (maximum > minimum) - && (style != IncDecButtons || incDecDragged)) - { - restoreMouseIfHidden(); - - if (sendChangeOnlyOnRelease && valueOnMouseDown != currentValue) - triggerChangeMessage (false); - - sendDragEnd(); - - deleteAndZero (popupDisplay); - - if (style == IncDecButtons) - { - incButton->setState (Button::buttonNormal); - decButton->setState (Button::buttonNormal); - } - } -} - -void Slider::restoreMouseIfHidden() -{ - if (mouseWasHidden) - { - mouseWasHidden = false; - - Component* c = Component::getComponentUnderMouse(); - - if (c == 0) - c = this; - - c->enableUnboundedMouseMovement (false); - - const double pos = (sliderBeingDragged == 2) ? getMaxValue() - : ((sliderBeingDragged == 1) ? getMinValue() - : currentValue); - - const int pixelPos = (int) getLinearSliderPos (pos); - - int x = isHorizontal() ? pixelPos : (getWidth() / 2); - int y = isVertical() ? pixelPos : (getHeight() / 2); - - relativePositionToGlobal (x, y); - Desktop::setMousePosition (x, y); - } -} - -void Slider::modifierKeysChanged (const ModifierKeys& modifiers) -{ - if (isEnabled() - && style != IncDecButtons - && style != Rotary - && isVelocityBased == modifiers.isAnyModifierKeyDown()) - { - restoreMouseIfHidden(); - } -} - -static double smallestAngleBetween (double a1, double a2) -{ - return jmin (fabs (a1 - a2), - fabs (a1 + double_Pi * 2.0 - a2), - fabs (a2 + double_Pi * 2.0 - a1)); -} - -void Slider::mouseDrag (const MouseEvent& e) -{ - if (isEnabled() - && (! menuShown) - && (maximum > minimum)) - { - if (style == Rotary) - { - int dx = e.x - sliderRect.getCentreX(); - int dy = e.y - sliderRect.getCentreY(); - - if (dx * dx + dy * dy > 25) - { - double angle = atan2 ((double) dx, (double) -dy); - while (angle < 0.0) - angle += double_Pi * 2.0; - - if (rotaryStop && ! e.mouseWasClicked()) - { - if (fabs (angle - lastAngle) > double_Pi) - { - if (angle >= lastAngle) - angle -= double_Pi * 2.0; - else - angle += double_Pi * 2.0; - } - - if (angle >= lastAngle) - angle = jmin (angle, (double) jmax (rotaryStart, rotaryEnd)); - else - angle = jmax (angle, (double) jmin (rotaryStart, rotaryEnd)); - } - else - { - while (angle < rotaryStart) - angle += double_Pi * 2.0; - - if (angle > rotaryEnd) - { - if (smallestAngleBetween (angle, rotaryStart) <= smallestAngleBetween (angle, rotaryEnd)) - angle = rotaryStart; - else - angle = rotaryEnd; - } - } - - const double proportion = (angle - rotaryStart) / (rotaryEnd - rotaryStart); - - valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, proportion)); - - lastAngle = angle; - } - } - else - { - if (style == LinearBar && e.mouseWasClicked() - && valueBox != 0 && valueBox->isEditable()) - return; - - if (style == IncDecButtons) - { - if (! incDecDragged) - incDecDragged = e.getDistanceFromDragStart() > 10 && ! e.mouseWasClicked(); - - if (! incDecDragged) - return; - } - - - if ((isVelocityBased == (userKeyOverridesVelocity ? e.mods.testFlags (ModifierKeys::ctrlModifier | ModifierKeys::commandModifier | ModifierKeys::altModifier) - : false)) - || ((maximum - minimum) / sliderRegionSize < interval)) - { - const int mousePos = (isHorizontal() || style == RotaryHorizontalDrag) ? e.x : e.y; - - double scaledMousePos = (mousePos - sliderRegionStart) / (double) sliderRegionSize; - - if (style == RotaryHorizontalDrag - || style == RotaryVerticalDrag - || style == IncDecButtons - || ((style == LinearHorizontal || style == LinearVertical || style == LinearBar) - && ! snapsToMousePos)) - { - const int mouseDiff = (style == RotaryHorizontalDrag - || style == LinearHorizontal - || style == LinearBar - || (style == IncDecButtons && incDecDragDirectionIsHorizontal())) - ? e.getDistanceFromDragStartX() - : -e.getDistanceFromDragStartY(); - - double newPos = valueToProportionOfLength (valueOnMouseDown) - + mouseDiff * (1.0 / pixelsForFullDragExtent); - - valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, newPos)); - - if (style == IncDecButtons) - { - incButton->setState (mouseDiff < 0 ? Button::buttonNormal : Button::buttonDown); - decButton->setState (mouseDiff > 0 ? Button::buttonNormal : Button::buttonDown); - } - } - else - { - if (isVertical()) - scaledMousePos = 1.0 - scaledMousePos; - - valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, scaledMousePos)); - } - } - else - { - const int mouseDiff = (isHorizontal() || style == RotaryHorizontalDrag - || (style == IncDecButtons && incDecDragDirectionIsHorizontal())) - ? e.x - mouseXWhenLastDragged - : e.y - mouseYWhenLastDragged; - - const double maxSpeed = jmax (200, sliderRegionSize); - double speed = jlimit (0.0, maxSpeed, (double) abs (mouseDiff)); - - if (speed != 0) - { - speed = 0.2 * velocityModeSensitivity - * (1.0 + sin (double_Pi * (1.5 + jmin (0.5, velocityModeOffset - + jmax (0.0, (double) (speed - velocityModeThreshold)) - / maxSpeed)))); - - if (mouseDiff < 0) - speed = -speed; - - if (isVertical() || style == RotaryVerticalDrag - || (style == IncDecButtons && ! incDecDragDirectionIsHorizontal())) - speed = -speed; - - const double currentPos = valueToProportionOfLength (valueWhenLastDragged); - - valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, currentPos + speed)); - - e.originalComponent->enableUnboundedMouseMovement (true, false); - mouseWasHidden = true; - } - } - } - - valueWhenLastDragged = jlimit (minimum, maximum, valueWhenLastDragged); - - if (sliderBeingDragged == 0) - { - setValue (snapValue (valueWhenLastDragged, true), - ! sendChangeOnlyOnRelease, true); - } - else if (sliderBeingDragged == 1) - { - setMinValue (snapValue (valueWhenLastDragged, true), - ! sendChangeOnlyOnRelease, false); - - if (e.mods.isShiftDown()) - setMaxValue (getMinValue() + minMaxDiff, false); - else - minMaxDiff = valueMax - valueMin; - } - else - { - jassert (sliderBeingDragged == 2); - - setMaxValue (snapValue (valueWhenLastDragged, true), - ! sendChangeOnlyOnRelease, false); - - if (e.mods.isShiftDown()) - setMinValue (getMaxValue() - minMaxDiff, false); - else - minMaxDiff = valueMax - valueMin; - } - - mouseXWhenLastDragged = e.x; - mouseYWhenLastDragged = e.y; - } -} - -void Slider::mouseDoubleClick (const MouseEvent&) -{ - if (doubleClickToValue - && isEnabled() - && style != IncDecButtons - && minimum <= doubleClickReturnValue - && maximum >= doubleClickReturnValue) - { - sendDragStart(); - setValue (doubleClickReturnValue, true, true); - sendDragEnd(); - } -} - -void Slider::mouseWheelMove (const MouseEvent& e, float wheelIncrementX, float wheelIncrementY) -{ - if (scrollWheelEnabled && isEnabled() - && style != TwoValueHorizontal - && style != TwoValueVertical) - { - if (maximum > minimum && ! isMouseButtonDownAnywhere()) - { - if (valueBox != 0) - valueBox->hideEditor (false); - - const double proportionDelta = (wheelIncrementX != 0 ? -wheelIncrementX : wheelIncrementY) * 0.15f; - const double currentPos = valueToProportionOfLength (currentValue); - const double newValue = proportionOfLengthToValue (jlimit (0.0, 1.0, currentPos + proportionDelta)); - - double delta = (newValue != currentValue) - ? jmax (fabs (newValue - currentValue), interval) : 0; - - if (currentValue > newValue) - delta = -delta; - - sendDragStart(); - setValue (snapValue (currentValue + delta, false), true, true); - sendDragEnd(); - } - } - else - { - Component::mouseWheelMove (e, wheelIncrementX, wheelIncrementY); - } -} - -void SliderListener::sliderDragStarted (Slider*) -{ -} - -void SliderListener::sliderDragEnded (Slider*) -{ -} - - -END_JUCE_NAMESPACE +/* + ============================================================================== + + This file is part of the JUCE library - "Jules' Utility Class Extensions" + Copyright 2004-7 by Raw Material Software ltd. + + ------------------------------------------------------------------------------ + + JUCE can be redistributed and/or modified under the terms of the + GNU General Public License, as published by the Free Software Foundation; + either version 2 of the License, or (at your option) any later version. + + JUCE 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 JUCE; if not, visit www.gnu.org/licenses or write to the + Free Software Foundation, Inc., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------------ + + If you'd like to release a closed-source product which uses JUCE, commercial + licenses are also available: visit www.rawmaterialsoftware.com/juce for + more information. + + ============================================================================== +*/ + +#include "../../../../juce_core/basics/juce_StandardHeader.h" + +BEGIN_JUCE_NAMESPACE + +#include "juce_Slider.h" +#include "../lookandfeel/juce_LookAndFeel.h" +#include "../menus/juce_PopupMenu.h" +#include "../juce_Desktop.h" +#include "../special/juce_BubbleComponent.h" +#include "../../../../juce_core/text/juce_LocalisedStrings.h" + + +//============================================================================== +class SliderPopupDisplayComponent : public BubbleComponent +{ +public: + //============================================================================== + SliderPopupDisplayComponent (Slider* const owner_) + : owner (owner_), + font (15.0f, Font::bold) + { + setAlwaysOnTop (true); + } + + ~SliderPopupDisplayComponent() + { + } + + void paintContent (Graphics& g, int w, int h) + { + g.setFont (font); + g.setColour (Colours::black); + + g.drawFittedText (text, 0, 0, w, h, Justification::centred, 1); + } + + void getContentSize (int& w, int& h) + { + w = font.getStringWidth (text) + 18; + h = (int) (font.getHeight() * 1.6f); + } + + void updatePosition (const String& newText) + { + if (text != newText) + { + text = newText; + repaint(); + } + + BubbleComponent::setPosition (owner); + } + + //============================================================================== + juce_UseDebuggingNewOperator + +private: + Slider* owner; + Font font; + String text; + + SliderPopupDisplayComponent (const SliderPopupDisplayComponent&); + const SliderPopupDisplayComponent& operator= (const SliderPopupDisplayComponent&); +}; + +//============================================================================== +Slider::Slider (const String& name) + : Component (name), + listeners (2), + currentValue (0.0), + valueMin (0.0), + valueMax (0.0), + minimum (0), + maximum (10), + interval (0), + skewFactor (1.0), + velocityModeSensitivity (1.0), + velocityModeOffset (0.0), + velocityModeThreshold (1), + rotaryStart (float_Pi * 1.2f), + rotaryEnd (float_Pi * 2.8f), + numDecimalPlaces (7), + sliderRegionStart (0), + sliderRegionSize (1), + sliderBeingDragged (-1), + pixelsForFullDragExtent (250), + style (LinearHorizontal), + textBoxPos (TextBoxLeft), + textBoxWidth (80), + textBoxHeight (20), + incDecButtonMode (incDecButtonsNotDraggable), + editableText (true), + doubleClickToValue (false), + isVelocityBased (false), + userKeyOverridesVelocity (true), + rotaryStop (true), + incDecButtonsSideBySide (false), + sendChangeOnlyOnRelease (false), + popupDisplayEnabled (false), + menuEnabled (false), + menuShown (false), + scrollWheelEnabled (true), + snapsToMousePos (true), + valueBox (0), + incButton (0), + decButton (0), + popupDisplay (0), + parentForPopupDisplay (0) +{ + setWantsKeyboardFocus (false); + setRepaintsOnMouseActivity (true); + + lookAndFeelChanged(); + updateText(); +} + +Slider::~Slider() +{ + deleteAndZero (popupDisplay); + deleteAllChildren(); +} + + +//============================================================================== +void Slider::handleAsyncUpdate() +{ + cancelPendingUpdate(); + + for (int i = listeners.size(); --i >= 0;) + { + ((SliderListener*) listeners.getUnchecked (i))->sliderValueChanged (this); + i = jmin (i, listeners.size()); + } +} + +void Slider::sendDragStart() +{ + startedDragging(); + + for (int i = listeners.size(); --i >= 0;) + { + ((SliderListener*) listeners.getUnchecked (i))->sliderDragStarted (this); + i = jmin (i, listeners.size()); + } +} + +void Slider::sendDragEnd() +{ + stoppedDragging(); + + sliderBeingDragged = -1; + + for (int i = listeners.size(); --i >= 0;) + { + ((SliderListener*) listeners.getUnchecked (i))->sliderDragEnded (this); + i = jmin (i, listeners.size()); + } +} + +void Slider::addListener (SliderListener* const listener) throw() +{ + jassert (listener != 0); + if (listener != 0) + listeners.add (listener); +} + +void Slider::removeListener (SliderListener* const listener) throw() +{ + listeners.removeValue (listener); +} + +//============================================================================== +void Slider::setSliderStyle (const SliderStyle newStyle) +{ + if (style != newStyle) + { + style = newStyle; + repaint(); + lookAndFeelChanged(); + } +} + +void Slider::setRotaryParameters (const float startAngleRadians, + const float endAngleRadians, + const bool stopAtEnd) +{ + // make sure the values are sensible.. + jassert (rotaryStart >= 0 && rotaryEnd >= 0); + jassert (rotaryStart < float_Pi * 4.0f && rotaryEnd < float_Pi * 4.0f); + jassert (rotaryStart < rotaryEnd); + + rotaryStart = startAngleRadians; + rotaryEnd = endAngleRadians; + rotaryStop = stopAtEnd; +} + +void Slider::setVelocityBasedMode (const bool velBased) throw() +{ + isVelocityBased = velBased; +} + +void Slider::setVelocityModeParameters (const double sensitivity, + const int threshold, + const double offset, + const bool userCanPressKeyToSwapMode) throw() +{ + jassert (threshold >= 0); + jassert (sensitivity > 0); + jassert (offset >= 0); + + velocityModeSensitivity = sensitivity; + velocityModeOffset = offset; + velocityModeThreshold = threshold; + userKeyOverridesVelocity = userCanPressKeyToSwapMode; +} + +void Slider::setSkewFactor (const double factor) throw() +{ + skewFactor = factor; +} + +void Slider::setSkewFactorFromMidPoint (const double sliderValueToShowAtMidPoint) throw() +{ + if (maximum > minimum) + skewFactor = log (0.5) / log ((sliderValueToShowAtMidPoint - minimum) + / (maximum - minimum)); +} + +void Slider::setMouseDragSensitivity (const int distanceForFullScaleDrag) +{ + jassert (distanceForFullScaleDrag > 0); + + pixelsForFullDragExtent = distanceForFullScaleDrag; +} + +void Slider::setIncDecButtonsMode (const IncDecButtonMode mode) +{ + if (incDecButtonMode != mode) + { + incDecButtonMode = mode; + lookAndFeelChanged(); + } +} + +void Slider::setTextBoxStyle (const TextEntryBoxPosition newPosition, + const bool isReadOnly, + const int textEntryBoxWidth, + const int textEntryBoxHeight) +{ + textBoxPos = newPosition; + editableText = ! isReadOnly; + textBoxWidth = textEntryBoxWidth; + textBoxHeight = textEntryBoxHeight; + + repaint(); + lookAndFeelChanged(); +} + +void Slider::setTextBoxIsEditable (const bool shouldBeEditable) throw() +{ + editableText = shouldBeEditable; + + if (valueBox != 0) + valueBox->setEditable (shouldBeEditable && isEnabled()); +} + +void Slider::showTextBox() +{ + jassert (editableText); // this should probably be avoided in read-only sliders. + + if (valueBox != 0) + valueBox->showEditor(); +} + +void Slider::hideTextBox (const bool discardCurrentEditorContents) +{ + if (valueBox != 0) + { + valueBox->hideEditor (discardCurrentEditorContents); + + if (discardCurrentEditorContents) + updateText(); + } +} + +void Slider::setChangeNotificationOnlyOnRelease (const bool onlyNotifyOnRelease) throw() +{ + sendChangeOnlyOnRelease = onlyNotifyOnRelease; +} + +void Slider::setSliderSnapsToMousePosition (const bool shouldSnapToMouse) throw() +{ + snapsToMousePos = shouldSnapToMouse; +} + +void Slider::setPopupDisplayEnabled (const bool enabled, + Component* const parentComponentToUse) throw() +{ + popupDisplayEnabled = enabled; + parentForPopupDisplay = parentComponentToUse; +} + +//============================================================================== +void Slider::colourChanged() +{ + lookAndFeelChanged(); +} + +void Slider::lookAndFeelChanged() +{ + const String previousTextBoxContent (valueBox != 0 ? valueBox->getText() + : getTextFromValue (currentValue)); + + deleteAllChildren(); + valueBox = 0; + + LookAndFeel& lf = getLookAndFeel(); + + if (textBoxPos != NoTextBox) + { + addAndMakeVisible (valueBox = getLookAndFeel().createSliderTextBox (*this)); + + valueBox->setWantsKeyboardFocus (false); + valueBox->setText (previousTextBoxContent, false); + + valueBox->setEditable (editableText && isEnabled()); + valueBox->addListener (this); + + if (style == LinearBar) + valueBox->addMouseListener (this, false); + } + + if (style == IncDecButtons) + { + addAndMakeVisible (incButton = lf.createSliderButton (true)); + incButton->addButtonListener (this); + + addAndMakeVisible (decButton = lf.createSliderButton (false)); + decButton->addButtonListener (this); + + if (incDecButtonMode != incDecButtonsNotDraggable) + { + incButton->addMouseListener (this, false); + decButton->addMouseListener (this, false); + } + else + { + incButton->setRepeatSpeed (300, 100, 20); + incButton->addMouseListener (decButton, false); + + decButton->setRepeatSpeed (300, 100, 20); + decButton->addMouseListener (incButton, false); + } + } + + setComponentEffect (lf.getSliderEffect()); + + resized(); + repaint(); +} + +//============================================================================== +void Slider::setRange (const double newMin, + const double newMax, + const double newInt) +{ + if (minimum != newMin + || maximum != newMax + || interval != newInt) + { + minimum = newMin; + maximum = newMax; + interval = newInt; + + // figure out the number of DPs needed to display all values at this + // interval setting. + numDecimalPlaces = 7; + + if (newInt != 0) + { + int v = abs ((int) (newInt * 10000000)); + + while ((v % 10) == 0) + { + --numDecimalPlaces; + v /= 10; + } + } + + // keep the current values inside the new range.. + if (style != TwoValueHorizontal && style != TwoValueVertical) + { + setValue (currentValue, false, false); + } + else + { + setMinValue (getMinValue(), false, false); + setMaxValue (getMaxValue(), false, false); + } + + updateText(); + } +} + +void Slider::triggerChangeMessage (const bool synchronous) +{ + if (synchronous) + handleAsyncUpdate(); + else + triggerAsyncUpdate(); + + valueChanged(); +} + +double Slider::getValue() const throw() +{ + // for a two-value style slider, you should use the getMinValue() and getMaxValue() + // methods to get the two values. + jassert (style != TwoValueHorizontal && style != TwoValueVertical); + + return currentValue; +} + +void Slider::setValue (double newValue, + const bool sendUpdateMessage, + const bool sendMessageSynchronously) +{ + // for a two-value style slider, you should use the setMinValue() and setMaxValue() + // methods to set the two values. + jassert (style != TwoValueHorizontal && style != TwoValueVertical); + + newValue = constrainedValue (newValue); + + if (style == ThreeValueHorizontal || style == ThreeValueVertical) + { + jassert (valueMin <= valueMax); + newValue = jlimit (valueMin, valueMax, newValue); + } + + if (currentValue != newValue) + { + if (valueBox != 0) + valueBox->hideEditor (true); + + currentValue = newValue; + updateText(); + repaint(); + + if (popupDisplay != 0) + { + ((SliderPopupDisplayComponent*) popupDisplay)->updatePosition (getTextFromValue (currentValue)); + popupDisplay->repaint(); + } + + if (sendUpdateMessage) + triggerChangeMessage (sendMessageSynchronously); + } +} + +double Slider::getMinValue() const throw() +{ + // The minimum value only applies to sliders that are in two- or three-value mode. + jassert (style == TwoValueHorizontal || style == TwoValueVertical + || style == ThreeValueHorizontal || style == ThreeValueVertical); + + return valueMin; +} + +double Slider::getMaxValue() const throw() +{ + // The maximum value only applies to sliders that are in two- or three-value mode. + jassert (style == TwoValueHorizontal || style == TwoValueVertical + || style == ThreeValueHorizontal || style == ThreeValueVertical); + + return valueMax; +} + +void Slider::setMinValue (double newValue, const bool sendUpdateMessage, const bool sendMessageSynchronously) +{ + // The minimum value only applies to sliders that are in two- or three-value mode. + jassert (style == TwoValueHorizontal || style == TwoValueVertical + || style == ThreeValueHorizontal || style == ThreeValueVertical); + + newValue = constrainedValue (newValue); + + if (style == TwoValueHorizontal || style == TwoValueVertical) + newValue = jmin (valueMax, newValue); + else + newValue = jmin (currentValue, newValue); + + if (valueMin != newValue) + { + valueMin = newValue; + repaint(); + + if (popupDisplay != 0) + { + ((SliderPopupDisplayComponent*) popupDisplay)->updatePosition (getTextFromValue (valueMin)); + popupDisplay->repaint(); + } + + if (sendUpdateMessage) + triggerChangeMessage (sendMessageSynchronously); + } +} + +void Slider::setMaxValue (double newValue, const bool sendUpdateMessage, const bool sendMessageSynchronously) +{ + // The maximum value only applies to sliders that are in two- or three-value mode. + jassert (style == TwoValueHorizontal || style == TwoValueVertical + || style == ThreeValueHorizontal || style == ThreeValueVertical); + + newValue = constrainedValue (newValue); + + if (style == TwoValueHorizontal || style == TwoValueVertical) + newValue = jmax (valueMin, newValue); + else + newValue = jmax (currentValue, newValue); + + if (valueMax != newValue) + { + valueMax = newValue; + repaint(); + + if (popupDisplay != 0) + { + ((SliderPopupDisplayComponent*) popupDisplay)->updatePosition (getTextFromValue (valueMax)); + popupDisplay->repaint(); + } + + if (sendUpdateMessage) + triggerChangeMessage (sendMessageSynchronously); + } +} + +void Slider::setDoubleClickReturnValue (const bool isDoubleClickEnabled, + const double valueToSetOnDoubleClick) throw() +{ + doubleClickToValue = isDoubleClickEnabled; + doubleClickReturnValue = valueToSetOnDoubleClick; +} + +double Slider::getDoubleClickReturnValue (bool& isEnabled_) const throw() +{ + isEnabled_ = doubleClickToValue; + return doubleClickReturnValue; +} + +void Slider::updateText() +{ + if (valueBox != 0) + valueBox->setText (getTextFromValue (currentValue), false); +} + +void Slider::setTextValueSuffix (const String& suffix) +{ + if (textSuffix != suffix) + { + textSuffix = suffix; + updateText(); + } +} + +const String Slider::getTextFromValue (double v) +{ + if (numDecimalPlaces > 0) + return String (v, numDecimalPlaces) + textSuffix; + else + return String (roundDoubleToInt (v)) + textSuffix; +} + +double Slider::getValueFromText (const String& text) +{ + String t (text.trimStart()); + + if (t.endsWith (textSuffix)) + t = t.substring (0, t.length() - textSuffix.length()); + + while (t.startsWithChar (T('+'))) + t = t.substring (1).trimStart(); + + return t.initialSectionContainingOnly (T("0123456789.,-")) + .getDoubleValue(); +} + +double Slider::proportionOfLengthToValue (double proportion) +{ + if (skewFactor != 1.0 && proportion > 0.0) + proportion = exp (log (proportion) / skewFactor); + + return minimum + (maximum - minimum) * proportion; +} + +double Slider::valueToProportionOfLength (double value) +{ + const double n = (value - minimum) / (maximum - minimum); + + return skewFactor == 1.0 ? n : pow (n, skewFactor); +} + +double Slider::snapValue (double attemptedValue, const bool) +{ + return attemptedValue; +} + +//============================================================================== +void Slider::startedDragging() +{ +} + +void Slider::stoppedDragging() +{ +} + +void Slider::valueChanged() +{ +} + +//============================================================================== +void Slider::enablementChanged() +{ + repaint(); +} + +void Slider::setPopupMenuEnabled (const bool menuEnabled_) throw() +{ + menuEnabled = menuEnabled_; +} + +void Slider::setScrollWheelEnabled (const bool enabled) throw() +{ + scrollWheelEnabled = enabled; +} + +//============================================================================== +void Slider::labelTextChanged (Label* label) +{ + const double newValue = snapValue (getValueFromText (label->getText()), false); + + if (getValue() != newValue) + { + sendDragStart(); + setValue (newValue, true, true); + sendDragEnd(); + } + + updateText(); // force a clean-up of the text, needed in case setValue() hasn't done this. +} + +void Slider::buttonClicked (Button* button) +{ + if (style == IncDecButtons) + { + sendDragStart(); + + if (button == incButton) + setValue (snapValue (getValue() + interval, false), true, true); + else if (button == decButton) + setValue (snapValue (getValue() - interval, false), true, true); + + sendDragEnd(); + } +} + +//============================================================================== +double Slider::constrainedValue (double value) const throw() +{ + if (interval > 0) + value = minimum + interval * floor ((value - minimum) / interval + 0.5); + + if (value <= minimum || maximum <= minimum) + value = minimum; + else if (value >= maximum) + value = maximum; + + return value; +} + +float Slider::getLinearSliderPos (const double value) +{ + double sliderPosProportional; + + if (maximum > minimum) + { + if (value < minimum) + { + sliderPosProportional = 0.0; + } + else if (value > maximum) + { + sliderPosProportional = 1.0; + } + else + { + sliderPosProportional = valueToProportionOfLength (value); + jassert (sliderPosProportional >= 0 && sliderPosProportional <= 1.0); + } + } + else + { + sliderPosProportional = 0.5; + } + + if (isVertical() || style == IncDecButtons) + sliderPosProportional = 1.0 - sliderPosProportional; + + return (float) (sliderRegionStart + sliderPosProportional * sliderRegionSize); +} + +bool Slider::isHorizontal() const throw() +{ + return style == LinearHorizontal + || style == LinearBar + || style == TwoValueHorizontal + || style == ThreeValueHorizontal; +} + +bool Slider::isVertical() const throw() +{ + return style == LinearVertical + || style == TwoValueVertical + || style == ThreeValueVertical; +} + +bool Slider::incDecDragDirectionIsHorizontal() const throw() +{ + return incDecButtonMode == incDecButtonsDraggable_Horizontal + || (incDecButtonMode == incDecButtonsDraggable_AutoDirection && incDecButtonsSideBySide); +} + +float Slider::getPositionOfValue (const double value) +{ + if (isHorizontal() || isVertical()) + { + return getLinearSliderPos (value); + } + else + { + jassertfalse // not a valid call on a slider that doesn't work linearly! + return 0.0f; + } +} + +//============================================================================== +void Slider::paint (Graphics& g) +{ + if (style != IncDecButtons) + { + if (style == Rotary || style == RotaryHorizontalDrag || style == RotaryVerticalDrag) + { + const float sliderPos = (float) valueToProportionOfLength (currentValue); + jassert (sliderPos >= 0 && sliderPos <= 1.0f); + + getLookAndFeel().drawRotarySlider (g, + sliderRect.getX(), + sliderRect.getY(), + sliderRect.getWidth(), + sliderRect.getHeight(), + sliderPos, + rotaryStart, rotaryEnd, + *this); + } + else + { + getLookAndFeel().drawLinearSlider (g, + sliderRect.getX(), + sliderRect.getY(), + sliderRect.getWidth(), + sliderRect.getHeight(), + getLinearSliderPos (currentValue), + getLinearSliderPos (valueMin), + getLinearSliderPos (valueMax), + style, + *this); + } + + if (style == LinearBar && valueBox == 0) + { + g.setColour (findColour (Slider::textBoxOutlineColourId)); + g.drawRect (0, 0, getWidth(), getHeight(), 1); + } + } +} + +void Slider::resized() +{ + int minXSpace = 0; + int minYSpace = 0; + + if (textBoxPos == TextBoxLeft || textBoxPos == TextBoxRight) + minXSpace = 30; + else + minYSpace = 15; + + const int tbw = jmax (0, jmin (textBoxWidth, getWidth() - minXSpace)); + const int tbh = jmax (0, jmin (textBoxHeight, getHeight() - minYSpace)); + + if (style == LinearBar) + { + if (valueBox != 0) + valueBox->setBounds (0, 0, getWidth(), getHeight()); + } + else + { + if (textBoxPos == NoTextBox) + { + sliderRect.setBounds (0, 0, getWidth(), getHeight()); + } + else if (textBoxPos == TextBoxLeft) + { + valueBox->setBounds (0, (getHeight() - tbh) / 2, tbw, tbh); + sliderRect.setBounds (tbw, 0, getWidth() - tbw, getHeight()); + } + else if (textBoxPos == TextBoxRight) + { + valueBox->setBounds (getWidth() - tbw, (getHeight() - tbh) / 2, tbw, tbh); + sliderRect.setBounds (0, 0, getWidth() - tbw, getHeight()); + } + else if (textBoxPos == TextBoxAbove) + { + valueBox->setBounds ((getWidth() - tbw) / 2, 0, tbw, tbh); + sliderRect.setBounds (0, tbh, getWidth(), getHeight() - tbh); + } + else if (textBoxPos == TextBoxBelow) + { + valueBox->setBounds ((getWidth() - tbw) / 2, getHeight() - tbh, tbw, tbh); + sliderRect.setBounds (0, 0, getWidth(), getHeight() - tbh); + } + } + + const int indent = getLookAndFeel().getSliderThumbRadius (*this); + + if (style == LinearBar) + { + const int barIndent = 1; + sliderRegionStart = barIndent; + sliderRegionSize = getWidth() - barIndent * 2; + + sliderRect.setBounds (sliderRegionStart, barIndent, + sliderRegionSize, getHeight() - barIndent * 2); + } + else if (isHorizontal()) + { + sliderRegionStart = sliderRect.getX() + indent; + sliderRegionSize = jmax (1, sliderRect.getWidth() - indent * 2); + + sliderRect.setBounds (sliderRegionStart, sliderRect.getY(), + sliderRegionSize, sliderRect.getHeight()); + } + else if (isVertical()) + { + sliderRegionStart = sliderRect.getY() + indent; + sliderRegionSize = jmax (1, sliderRect.getHeight() - indent * 2); + + sliderRect.setBounds (sliderRect.getX(), sliderRegionStart, + sliderRect.getWidth(), sliderRegionSize); + } + else + { + sliderRegionStart = 0; + sliderRegionSize = 100; + } + + if (style == IncDecButtons) + { + Rectangle buttonRect (sliderRect); + + if (textBoxPos == TextBoxLeft || textBoxPos == TextBoxRight) + buttonRect.expand (-2, 0); + else + buttonRect.expand (0, -2); + + incDecButtonsSideBySide = buttonRect.getWidth() > buttonRect.getHeight(); + + if (incDecButtonsSideBySide) + { + decButton->setBounds (buttonRect.getX(), + buttonRect.getY(), + buttonRect.getWidth() / 2, + buttonRect.getHeight()); + + decButton->setConnectedEdges (Button::ConnectedOnRight); + + incButton->setBounds (buttonRect.getCentreX(), + buttonRect.getY(), + buttonRect.getWidth() / 2, + buttonRect.getHeight()); + + incButton->setConnectedEdges (Button::ConnectedOnLeft); + } + else + { + incButton->setBounds (buttonRect.getX(), + buttonRect.getY(), + buttonRect.getWidth(), + buttonRect.getHeight() / 2); + + incButton->setConnectedEdges (Button::ConnectedOnBottom); + + decButton->setBounds (buttonRect.getX(), + buttonRect.getCentreY(), + buttonRect.getWidth(), + buttonRect.getHeight() / 2); + + decButton->setConnectedEdges (Button::ConnectedOnTop); + } + } +} + +void Slider::focusOfChildComponentChanged (FocusChangeType) +{ + repaint(); +} + +void Slider::mouseDown (const MouseEvent& e) +{ + mouseWasHidden = false; + incDecDragged = false; + + if (isEnabled()) + { + if (e.mods.isPopupMenu() && menuEnabled) + { + menuShown = true; + + PopupMenu m; + m.addItem (1, TRANS ("velocity-sensitive mode"), true, isVelocityBased); + m.addSeparator(); + + if (style == Rotary || style == RotaryHorizontalDrag || style == RotaryVerticalDrag) + { + PopupMenu rotaryMenu; + rotaryMenu.addItem (2, TRANS ("use circular dragging"), true, style == Rotary); + rotaryMenu.addItem (3, TRANS ("use left-right dragging"), true, style == RotaryHorizontalDrag); + rotaryMenu.addItem (4, TRANS ("use up-down dragging"), true, style == RotaryVerticalDrag); + + m.addSubMenu (TRANS ("rotary mode"), rotaryMenu); + } + + const int r = m.show(); + + if (r == 1) + { + setVelocityBasedMode (! isVelocityBased); + } + else if (r == 2) + { + setSliderStyle (Rotary); + } + else if (r == 3) + { + setSliderStyle (RotaryHorizontalDrag); + } + else if (r == 4) + { + setSliderStyle (RotaryVerticalDrag); + } + } + else if (maximum > minimum) + { + menuShown = false; + + if (valueBox != 0) + valueBox->hideEditor (true); + + sliderBeingDragged = 0; + + if (style == TwoValueHorizontal + || style == TwoValueVertical + || style == ThreeValueHorizontal + || style == ThreeValueVertical) + { + const float mousePos = (float) (isVertical() ? e.y : e.x); + + const float normalPosDistance = fabsf (getLinearSliderPos (currentValue) - mousePos); + const float minPosDistance = fabsf (getLinearSliderPos (valueMin) - 0.1f - mousePos); + const float maxPosDistance = fabsf (getLinearSliderPos (valueMax) + 0.1f - mousePos); + + if (style == TwoValueHorizontal || style == TwoValueVertical) + { + if (maxPosDistance <= minPosDistance) + sliderBeingDragged = 2; + else + sliderBeingDragged = 1; + } + else if (style == ThreeValueHorizontal || style == ThreeValueVertical) + { + if (normalPosDistance >= minPosDistance && maxPosDistance >= minPosDistance) + sliderBeingDragged = 1; + else if (normalPosDistance >= maxPosDistance) + sliderBeingDragged = 2; + } + } + + minMaxDiff = valueMax - valueMin; + + mouseXWhenLastDragged = e.x; + mouseYWhenLastDragged = e.y; + lastAngle = rotaryStart + (rotaryEnd - rotaryStart) + * valueToProportionOfLength (currentValue); + + if (sliderBeingDragged == 2) + valueWhenLastDragged = valueMax; + else if (sliderBeingDragged == 1) + valueWhenLastDragged = valueMin; + else + valueWhenLastDragged = currentValue; + + valueOnMouseDown = valueWhenLastDragged; + + if (popupDisplayEnabled) + { + SliderPopupDisplayComponent* const popup = new SliderPopupDisplayComponent (this); + popupDisplay = popup; + + if (parentForPopupDisplay != 0) + { + parentForPopupDisplay->addChildComponent (popup); + } + else + { + popup->addToDesktop (0); + } + + popup->setVisible (true); + } + + sendDragStart(); + + mouseDrag (e); + } + } +} + +void Slider::mouseUp (const MouseEvent&) +{ + if (isEnabled() + && (! menuShown) + && (maximum > minimum) + && (style != IncDecButtons || incDecDragged)) + { + restoreMouseIfHidden(); + + if (sendChangeOnlyOnRelease && valueOnMouseDown != currentValue) + triggerChangeMessage (false); + + sendDragEnd(); + + deleteAndZero (popupDisplay); + + if (style == IncDecButtons) + { + incButton->setState (Button::buttonNormal); + decButton->setState (Button::buttonNormal); + } + } +} + +void Slider::restoreMouseIfHidden() +{ + if (mouseWasHidden) + { + mouseWasHidden = false; + + Component* c = Component::getComponentUnderMouse(); + + if (c == 0) + c = this; + + c->enableUnboundedMouseMovement (false); + + const double pos = (sliderBeingDragged == 2) ? getMaxValue() + : ((sliderBeingDragged == 1) ? getMinValue() + : currentValue); + + if (style == RotaryHorizontalDrag || style == RotaryVerticalDrag) + { + int x, y, downX, downY; + Desktop::getMousePosition (x, y); + Desktop::getLastMouseDownPosition (downX, downY); + + if (style == RotaryHorizontalDrag) + { + const double posDiff = valueToProportionOfLength (pos) - valueToProportionOfLength (valueOnMouseDown); + x = pixelsForFullDragExtent * posDiff + downX; + y = downY; + } + else + { + const double posDiff = valueToProportionOfLength (valueOnMouseDown) - valueToProportionOfLength (pos); + x = downX; + y = pixelsForFullDragExtent * posDiff + downY; + } + + Desktop::setMousePosition (x, y); + } + else + { + const int pixelPos = (int) getLinearSliderPos (pos); + + int x = isHorizontal() ? pixelPos : (getWidth() / 2); + int y = isVertical() ? pixelPos : (getHeight() / 2); + + relativePositionToGlobal (x, y); + Desktop::setMousePosition (x, y); + } + } +} + +void Slider::modifierKeysChanged (const ModifierKeys& modifiers) +{ + if (isEnabled() + && style != IncDecButtons + && style != Rotary + && isVelocityBased == modifiers.isAnyModifierKeyDown()) + { + restoreMouseIfHidden(); + } +} + +static double smallestAngleBetween (double a1, double a2) +{ + return jmin (fabs (a1 - a2), + fabs (a1 + double_Pi * 2.0 - a2), + fabs (a2 + double_Pi * 2.0 - a1)); +} + +void Slider::mouseDrag (const MouseEvent& e) +{ + if (isEnabled() + && (! menuShown) + && (maximum > minimum)) + { + if (style == Rotary) + { + int dx = e.x - sliderRect.getCentreX(); + int dy = e.y - sliderRect.getCentreY(); + + if (dx * dx + dy * dy > 25) + { + double angle = atan2 ((double) dx, (double) -dy); + while (angle < 0.0) + angle += double_Pi * 2.0; + + if (rotaryStop && ! e.mouseWasClicked()) + { + if (fabs (angle - lastAngle) > double_Pi) + { + if (angle >= lastAngle) + angle -= double_Pi * 2.0; + else + angle += double_Pi * 2.0; + } + + if (angle >= lastAngle) + angle = jmin (angle, (double) jmax (rotaryStart, rotaryEnd)); + else + angle = jmax (angle, (double) jmin (rotaryStart, rotaryEnd)); + } + else + { + while (angle < rotaryStart) + angle += double_Pi * 2.0; + + if (angle > rotaryEnd) + { + if (smallestAngleBetween (angle, rotaryStart) <= smallestAngleBetween (angle, rotaryEnd)) + angle = rotaryStart; + else + angle = rotaryEnd; + } + } + + const double proportion = (angle - rotaryStart) / (rotaryEnd - rotaryStart); + + valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, proportion)); + + lastAngle = angle; + } + } + else + { + if (style == LinearBar && e.mouseWasClicked() + && valueBox != 0 && valueBox->isEditable()) + return; + + if (style == IncDecButtons) + { + if (! incDecDragged) + incDecDragged = e.getDistanceFromDragStart() > 10 && ! e.mouseWasClicked(); + + if (! incDecDragged) + return; + } + + + if ((isVelocityBased == (userKeyOverridesVelocity ? e.mods.testFlags (ModifierKeys::ctrlModifier | ModifierKeys::commandModifier | ModifierKeys::altModifier) + : false)) + || ((maximum - minimum) / sliderRegionSize < interval)) + { + const int mousePos = (isHorizontal() || style == RotaryHorizontalDrag) ? e.x : e.y; + + double scaledMousePos = (mousePos - sliderRegionStart) / (double) sliderRegionSize; + + if (style == RotaryHorizontalDrag + || style == RotaryVerticalDrag + || style == IncDecButtons + || ((style == LinearHorizontal || style == LinearVertical || style == LinearBar) + && ! snapsToMousePos)) + { + const int mouseDiff = (style == RotaryHorizontalDrag + || style == LinearHorizontal + || style == LinearBar + || (style == IncDecButtons && incDecDragDirectionIsHorizontal())) + ? e.getDistanceFromDragStartX() + : -e.getDistanceFromDragStartY(); + + double newPos = valueToProportionOfLength (valueOnMouseDown) + + mouseDiff * (1.0 / pixelsForFullDragExtent); + + valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, newPos)); + + if (style == IncDecButtons) + { + incButton->setState (mouseDiff < 0 ? Button::buttonNormal : Button::buttonDown); + decButton->setState (mouseDiff > 0 ? Button::buttonNormal : Button::buttonDown); + } + } + else + { + if (isVertical()) + scaledMousePos = 1.0 - scaledMousePos; + + valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, scaledMousePos)); + } + } + else + { + const int mouseDiff = (isHorizontal() || style == RotaryHorizontalDrag + || (style == IncDecButtons && incDecDragDirectionIsHorizontal())) + ? e.x - mouseXWhenLastDragged + : e.y - mouseYWhenLastDragged; + + const double maxSpeed = jmax (200, sliderRegionSize); + double speed = jlimit (0.0, maxSpeed, (double) abs (mouseDiff)); + + if (speed != 0) + { + speed = 0.2 * velocityModeSensitivity + * (1.0 + sin (double_Pi * (1.5 + jmin (0.5, velocityModeOffset + + jmax (0.0, (double) (speed - velocityModeThreshold)) + / maxSpeed)))); + + if (mouseDiff < 0) + speed = -speed; + + if (isVertical() || style == RotaryVerticalDrag + || (style == IncDecButtons && ! incDecDragDirectionIsHorizontal())) + speed = -speed; + + const double currentPos = valueToProportionOfLength (valueWhenLastDragged); + + valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, currentPos + speed)); + + e.originalComponent->enableUnboundedMouseMovement (true, false); + mouseWasHidden = true; + } + } + } + + valueWhenLastDragged = jlimit (minimum, maximum, valueWhenLastDragged); + + if (sliderBeingDragged == 0) + { + setValue (snapValue (valueWhenLastDragged, true), + ! sendChangeOnlyOnRelease, true); + } + else if (sliderBeingDragged == 1) + { + setMinValue (snapValue (valueWhenLastDragged, true), + ! sendChangeOnlyOnRelease, false); + + if (e.mods.isShiftDown()) + setMaxValue (getMinValue() + minMaxDiff, false); + else + minMaxDiff = valueMax - valueMin; + } + else + { + jassert (sliderBeingDragged == 2); + + setMaxValue (snapValue (valueWhenLastDragged, true), + ! sendChangeOnlyOnRelease, false); + + if (e.mods.isShiftDown()) + setMinValue (getMaxValue() - minMaxDiff, false); + else + minMaxDiff = valueMax - valueMin; + } + + mouseXWhenLastDragged = e.x; + mouseYWhenLastDragged = e.y; + } +} + +void Slider::mouseDoubleClick (const MouseEvent&) +{ + if (doubleClickToValue + && isEnabled() + && style != IncDecButtons + && minimum <= doubleClickReturnValue + && maximum >= doubleClickReturnValue) + { + sendDragStart(); + setValue (doubleClickReturnValue, true, true); + sendDragEnd(); + } +} + +void Slider::mouseWheelMove (const MouseEvent& e, float wheelIncrementX, float wheelIncrementY) +{ + if (scrollWheelEnabled && isEnabled() + && style != TwoValueHorizontal + && style != TwoValueVertical) + { + if (maximum > minimum && ! isMouseButtonDownAnywhere()) + { + if (valueBox != 0) + valueBox->hideEditor (false); + + const double proportionDelta = (wheelIncrementX != 0 ? -wheelIncrementX : wheelIncrementY) * 0.15f; + const double currentPos = valueToProportionOfLength (currentValue); + const double newValue = proportionOfLengthToValue (jlimit (0.0, 1.0, currentPos + proportionDelta)); + + double delta = (newValue != currentValue) + ? jmax (fabs (newValue - currentValue), interval) : 0; + + if (currentValue > newValue) + delta = -delta; + + sendDragStart(); + setValue (snapValue (currentValue + delta, false), true, true); + sendDragEnd(); + } + } + else + { + Component::mouseWheelMove (e, wheelIncrementX, wheelIncrementY); + } +} + +void SliderListener::sliderDragStarted (Slider*) +{ +} + +void SliderListener::sliderDragEnded (Slider*) +{ +} + + +END_JUCE_NAMESPACE