andrewm@0: /*
andrewm@0:   This code accompanies the textbook:
andrewm@0:  
andrewm@0:   Digital Audio Effects: Theory, Implementation and Application
andrewm@0:   Joshua D. Reiss and Andrew P. McPherson
andrewm@0:  
andrewm@0:   ---
andrewm@0:  
andrewm@0:   Delay: basic delay effect with feedback
andrewm@0:   See textbook Chapter 2: Delay Line Effects
andrewm@0:  
andrewm@0:   Code by Andrew McPherson, Brecht de Man and Joshua Reiss
andrewm@0:  
andrewm@0:   ---
andrewm@0: 
andrewm@0:   This program is free software: you can redistribute it and/or modify
andrewm@0:   it under the terms of the GNU General Public License as published by
andrewm@0:   the Free Software Foundation, either version 3 of the License, or
andrewm@0:   (at your option) any later version.
andrewm@0:  
andrewm@0:   This program is distributed in the hope that it will be useful,
andrewm@0:   but WITHOUT ANY WARRANTY; without even the implied warranty of
andrewm@0:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
andrewm@0:   GNU General Public License for more details.
andrewm@0: 
andrewm@0:   You should have received a copy of the GNU General Public License
andrewm@0:   along with this program.  If not, see <http://www.gnu.org/licenses/>.
andrewm@0: */
andrewm@0: 
andrewm@0: #include "PluginProcessor.h"
andrewm@0: #include "PluginEditor.h"
andrewm@0: 
andrewm@0: 
andrewm@0: //==============================================================================
andrewm@0: DelayAudioProcessorEditor::DelayAudioProcessorEditor (DelayAudioProcessor* ownerFilter)
andrewm@0:     : AudioProcessorEditor (ownerFilter),
andrewm@0:       delayLengthLabel_("", "Delay (sec):"),
andrewm@0:       feedbackLabel_("", "Feedback:"),
andrewm@0:       dryMixLabel_("", "Dry Mix Level:"),
andrewm@0:       wetMixLabel_("", "Delayed Mix Level:")
andrewm@0: {
andrewm@0: 
andrewm@0:     // Set up the sliders
andrewm@0:     addAndMakeVisible (&delayLengthSlider_);
andrewm@0:     delayLengthSlider_.setSliderStyle (Slider::Rotary);
andrewm@0:     delayLengthSlider_.addListener (this);
andrewm@0:     delayLengthSlider_.setRange (0.01, 2.0, 0.01);
andrewm@0:     
andrewm@0:     addAndMakeVisible (&feedbackSlider_);
andrewm@0:     feedbackSlider_.setSliderStyle (Slider::Rotary);
andrewm@0:     feedbackSlider_.addListener (this);
andrewm@0:     feedbackSlider_.setRange (0.0, 0.995, 0.005);
andrewm@0:     
andrewm@0:     addAndMakeVisible (&dryMixSlider_);
andrewm@0:     dryMixSlider_.setSliderStyle (Slider::Rotary);
andrewm@0:     dryMixSlider_.addListener (this);
andrewm@0:     dryMixSlider_.setRange (0.0, 1.0, 0.01);
andrewm@0:     
andrewm@0:     addAndMakeVisible (&wetMixSlider_);
andrewm@0:     wetMixSlider_.setSliderStyle (Slider::Rotary);
andrewm@0:     wetMixSlider_.addListener (this);
andrewm@0:     wetMixSlider_.setRange (0.0, 1.0, 0.01);
andrewm@0:     
andrewm@0:     delayLengthLabel_.attachToComponent(&delayLengthSlider_, false);
andrewm@0:     delayLengthLabel_.setFont(Font (11.0f));
andrewm@0:     
andrewm@0:     feedbackLabel_.attachToComponent(&feedbackSlider_, false);
andrewm@0:     feedbackLabel_.setFont(Font (11.0f));
andrewm@0:     
andrewm@0:     dryMixLabel_.attachToComponent(&dryMixSlider_, false);
andrewm@0:     dryMixLabel_.setFont(Font (11.0f));
andrewm@0:     
andrewm@0:     wetMixLabel_.attachToComponent(&wetMixSlider_, false);
andrewm@0:     wetMixLabel_.setFont(Font (11.0f));
andrewm@0:     
andrewm@0:     // add the triangular resizer component for the bottom-right of the UI
andrewm@0:     addAndMakeVisible(resizer_ = new ResizableCornerComponent (this, &resizeLimits_));
andrewm@0:     resizeLimits_.setSizeLimits(370, 140, 500, 300);
andrewm@0:     
andrewm@0:     // set our component's initial size to be the last one that was stored in the filter's settings
andrewm@0:     setSize(ownerFilter->lastUIWidth_,
andrewm@0:             ownerFilter->lastUIHeight_);
andrewm@0:     
andrewm@0:     startTimer(50);
andrewm@0: }
andrewm@0: 
andrewm@0: DelayAudioProcessorEditor::~DelayAudioProcessorEditor()
andrewm@0: {
andrewm@0: }
andrewm@0: 
andrewm@0: //==============================================================================
andrewm@0: void DelayAudioProcessorEditor::paint (Graphics& g)
andrewm@0: {
andrewm@0:     g.fillAll (Colours::grey);
andrewm@0: }
andrewm@0: 
andrewm@0: void DelayAudioProcessorEditor::resized()
andrewm@0: {
andrewm@0:     delayLengthSlider_.setBounds (20, 20, 150, 40);
andrewm@0:     feedbackSlider_.setBounds (200, 20, 150, 40);
andrewm@0:     dryMixSlider_.setBounds(20, 80, 150, 40);
andrewm@0:     wetMixSlider_.setBounds(200, 80, 150, 40);
andrewm@0:     
andrewm@0:     resizer_->setBounds(getWidth() - 16, getHeight() - 16, 16, 16);
andrewm@0:     
andrewm@0:     getProcessor()->lastUIWidth_ = getWidth();
andrewm@0:     getProcessor()->lastUIHeight_ = getHeight();
andrewm@0: }
andrewm@0: 
andrewm@0: //==============================================================================
andrewm@0: // This timer periodically checks whether any of the filter's parameters have changed...
andrewm@0: void DelayAudioProcessorEditor::timerCallback()
andrewm@0: {
andrewm@0:     DelayAudioProcessor* ourProcessor = getProcessor();
andrewm@0:     
andrewm@0:     delayLengthSlider_.setValue(ourProcessor->delayLength_, dontSendNotification);
andrewm@0:     feedbackSlider_.setValue(ourProcessor->feedback_, dontSendNotification);
andrewm@0:     dryMixSlider_.setValue(ourProcessor->dryMix_, dontSendNotification);
andrewm@0:     wetMixSlider_.setValue(ourProcessor->wetMix_, dontSendNotification);
andrewm@0: }
andrewm@0: 
andrewm@0: // This is our Slider::Listener callback, when the user drags a slider.
andrewm@0: void DelayAudioProcessorEditor::sliderValueChanged (Slider* slider)
andrewm@0: {
andrewm@0:     // It's vital to use setParameterNotifyingHost to change any parameters that are automatable
andrewm@0:     // by the host, rather than just modifying them directly, otherwise the host won't know
andrewm@0:     // that they've changed.
andrewm@0:     
andrewm@0:     if (slider == &delayLengthSlider_)
andrewm@0:     {
andrewm@0:         getProcessor()->setParameterNotifyingHost (DelayAudioProcessor::kDelayLengthParam,
andrewm@0:                                                    (float)delayLengthSlider_.getValue());
andrewm@0:     }
andrewm@0:     else if (slider == &feedbackSlider_)
andrewm@0:     {
andrewm@0:         getProcessor()->setParameterNotifyingHost (DelayAudioProcessor::kFeedbackParam,
andrewm@0:                                                    (float)feedbackSlider_.getValue());
andrewm@0:     }
andrewm@0:     else if (slider == &dryMixSlider_)
andrewm@0:     {
andrewm@0:         getProcessor()->setParameterNotifyingHost (DelayAudioProcessor::kDryMixParam,
andrewm@0:                                                    (float)dryMixSlider_.getValue());
andrewm@0:     }
andrewm@0:     else if (slider == &wetMixSlider_)
andrewm@0:     {
andrewm@0:         getProcessor()->setParameterNotifyingHost (DelayAudioProcessor::kWetMixParam,
andrewm@0:                                                    (float)wetMixSlider_.getValue());
andrewm@0:     }
andrewm@0: }