paulxstretch/deps/juce/modules/juce_gui_basics/properties/juce_MultiChoicePropertyComponent.cpp

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2020 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
End User License Agreement: www.juce.com/juce-6-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
//==============================================================================
class StringComparator
{
public:
static int compareElements (var first, var second)
{
if (first.toString() > second.toString())
return 1;
else if (first.toString() < second.toString())
return -1;
return 0;
}
};
static void updateButtonTickColour (ToggleButton* button, bool usingDefault)
{
button->setColour (ToggleButton::tickColourId, button->getLookAndFeel().findColour (ToggleButton::tickColourId)
.withAlpha (usingDefault ? 0.4f : 1.0f));
}
//==============================================================================
class MultiChoicePropertyComponent::MultiChoiceRemapperSource : public Value::ValueSource,
private Value::Listener
{
public:
MultiChoiceRemapperSource (const Value& source, var v, int c)
: sourceValue (source),
varToControl (v),
maxChoices (c)
{
sourceValue.addListener (this);
}
var getValue() const override
{
if (auto* arr = sourceValue.getValue().getArray())
if (arr->contains (varToControl))
return true;
return false;
}
void setValue (const var& newValue) override
{
if (auto* arr = sourceValue.getValue().getArray())
{
auto temp = *arr;
if (static_cast<bool> (newValue))
{
if (temp.addIfNotAlreadyThere (varToControl) && (maxChoices != -1) && (temp.size() > maxChoices))
temp.remove (temp.size() - 2);
}
else
{
temp.remove (arr->indexOf (varToControl));
}
StringComparator c;
temp.sort (c);
sourceValue = temp;
}
}
private:
Value sourceValue;
var varToControl;
int maxChoices;
//==============================================================================
void valueChanged (Value&) override { sendChangeMessage (true); }
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MultiChoiceRemapperSource)
};
//==============================================================================
class MultiChoicePropertyComponent::MultiChoiceRemapperSourceWithDefault : public Value::ValueSource,
private Value::Listener
{
public:
MultiChoiceRemapperSourceWithDefault (ValueWithDefault* vwd, var v, int c, ToggleButton* b)
: valueWithDefault (vwd),
varToControl (v),
sourceValue (valueWithDefault->getPropertyAsValue()),
maxChoices (c),
buttonToControl (b)
{
sourceValue.addListener (this);
}
var getValue() const override
{
if (valueWithDefault == nullptr)
return {};
auto v = valueWithDefault->get();
if (auto* arr = v.getArray())
{
if (arr->contains (varToControl))
{
updateButtonTickColour (buttonToControl, valueWithDefault->isUsingDefault());
return true;
}
}
return false;
}
void setValue (const var& newValue) override
{
if (valueWithDefault == nullptr)
return;
auto v = valueWithDefault->get();
OptionalScopedPointer<Array<var>> arrayToControl;
if (valueWithDefault->isUsingDefault())
arrayToControl.set (new Array<var>(), true); // use an empty array so the default values are overwritten
else
arrayToControl.set (v.getArray(), false);
if (arrayToControl != nullptr)
{
auto temp = *arrayToControl;
bool newState = newValue;
if (valueWithDefault->isUsingDefault())
{
if (auto* defaultArray = v.getArray())
{
if (defaultArray->contains (varToControl))
newState = true; // force the state as the user is setting it explicitly
}
}
if (newState)
{
if (temp.addIfNotAlreadyThere (varToControl) && (maxChoices != -1) && (temp.size() > maxChoices))
temp.remove (temp.size() - 2);
}
else
{
temp.remove (temp.indexOf (varToControl));
}
StringComparator c;
temp.sort (c);
*valueWithDefault = temp;
if (temp.size() == 0)
valueWithDefault->resetToDefault();
}
}
private:
//==============================================================================
void valueChanged (Value&) override { sendChangeMessage (true); }
//==============================================================================
WeakReference<ValueWithDefault> valueWithDefault;
var varToControl;
Value sourceValue;
int maxChoices;
ToggleButton* buttonToControl;
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MultiChoiceRemapperSourceWithDefault)
};
//==============================================================================
int MultiChoicePropertyComponent::getTotalButtonsHeight (int numButtons)
{
return numButtons * buttonHeight + 1;
}
MultiChoicePropertyComponent::MultiChoicePropertyComponent (const String& propertyName,
const StringArray& choices,
const Array<var>& correspondingValues)
: PropertyComponent (propertyName, jmin (getTotalButtonsHeight (choices.size()), collapsedHeight))
{
// The array of corresponding values must contain one value for each of the items in
// the choices array!
jassertquiet (choices.size() == correspondingValues.size());
for (auto choice : choices)
addAndMakeVisible (choiceButtons.add (new ToggleButton (choice)));
if (preferredHeight >= collapsedHeight)
{
expandable = true;
maxHeight = getTotalButtonsHeight (choiceButtons.size()) + expandAreaHeight;
}
if (isExpandable())
{
{
Path expandShape;
expandShape.addTriangle ({ 0, 0 }, { 5, 10 }, { 10, 0});
expandButton.setShape (expandShape, true, true, false);
}
expandButton.onClick = [this] { setExpanded (! expanded); };
addAndMakeVisible (expandButton);
lookAndFeelChanged();
}
}
MultiChoicePropertyComponent::MultiChoicePropertyComponent (const Value& valueToControl,
const String& propertyName,
const StringArray& choices,
const Array<var>& correspondingValues,
int maxChoices)
: MultiChoicePropertyComponent (propertyName, choices, correspondingValues)
{
// The value to control must be an array!
jassert (valueToControl.getValue().isArray());
for (int i = 0; i < choiceButtons.size(); ++i)
choiceButtons[i]->getToggleStateValue().referTo (Value (new MultiChoiceRemapperSource (valueToControl,
correspondingValues[i],
maxChoices)));
}
MultiChoicePropertyComponent::MultiChoicePropertyComponent (ValueWithDefault& valueToControl,
const String& propertyName,
const StringArray& choices,
const Array<var>& correspondingValues,
int maxChoices)
: MultiChoicePropertyComponent (propertyName, choices, correspondingValues)
{
valueWithDefault = &valueToControl;
// The value to control must be an array!
jassert (valueWithDefault->get().isArray());
for (int i = 0; i < choiceButtons.size(); ++i)
choiceButtons[i]->getToggleStateValue().referTo (Value (new MultiChoiceRemapperSourceWithDefault (valueWithDefault,
correspondingValues[i],
maxChoices,
choiceButtons[i])));
valueWithDefault->onDefaultChange = [this] { repaint(); };
}
MultiChoicePropertyComponent::~MultiChoicePropertyComponent()
{
if (valueWithDefault != nullptr)
valueWithDefault->onDefaultChange = nullptr;
}
void MultiChoicePropertyComponent::paint (Graphics& g)
{
g.setColour (findColour (TextEditor::backgroundColourId));
g.fillRect (getLookAndFeel().getPropertyComponentContentPosition (*this));
if (isExpandable() && ! isExpanded())
{
g.setColour (findColour (TextEditor::backgroundColourId).contrasting().withAlpha (0.4f));
g.drawFittedText ("+ " + String (numHidden) + " more", getLookAndFeel().getPropertyComponentContentPosition (*this)
.removeFromBottom (expandAreaHeight).withTrimmedLeft (10),
Justification::centredLeft, 1);
}
PropertyComponent::paint (g);
}
void MultiChoicePropertyComponent::resized()
{
auto bounds = getLookAndFeel().getPropertyComponentContentPosition (*this);
if (isExpandable())
{
bounds.removeFromBottom (5);
auto buttonSlice = bounds.removeFromBottom (10);
expandButton.setSize (10, 10);
expandButton.setCentrePosition (buttonSlice.getCentre());
}
numHidden = 0;
for (auto* b : choiceButtons)
{
if (bounds.getHeight() >= buttonHeight)
{
b->setVisible (true);
b->setBounds (bounds.removeFromTop (buttonHeight).reduced (5, 2));
}
else
{
b->setVisible (false);
++numHidden;
}
}
}
void MultiChoicePropertyComponent::setExpanded (bool shouldBeExpanded) noexcept
{
if (! isExpandable() || (isExpanded() == shouldBeExpanded))
return;
expanded = shouldBeExpanded;
preferredHeight = expanded ? maxHeight : collapsedHeight;
if (auto* propertyPanel = findParentComponentOfClass<PropertyPanel>())
propertyPanel->resized();
if (onHeightChange != nullptr)
onHeightChange();
expandButton.setTransform (AffineTransform::rotation (expanded ? MathConstants<float>::pi : MathConstants<float>::twoPi,
(float) expandButton.getBounds().getCentreX(),
(float) expandButton.getBounds().getCentreY()));
resized();
}
//==============================================================================
void MultiChoicePropertyComponent::lookAndFeelChanged()
{
auto iconColour = findColour (TextEditor::backgroundColourId).contrasting();
expandButton.setColours (iconColour, iconColour.darker(), iconColour.darker());
if (valueWithDefault != nullptr)
{
auto usingDefault = valueWithDefault->isUsingDefault();
for (auto* button : choiceButtons)
updateButtonTickColour (button, usingDefault);
}
}
} // namespace juce