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#include "widget/weffectchainpresetselector.h"
#include <QAbstractItemView>
#include <QPaintEvent>
#include <QStyleOption>
#include <QStylePainter>
#include <QtDebug>
#include "effects/chains/quickeffectchain.h"
#include "effects/effectsmanager.h"
#include "library/library_decl.h"
#include "widget/effectwidgetutils.h"
WEffectChainPresetSelector::WEffectChainPresetSelector(
QWidget* pParent, EffectsManager* pEffectsManager)
: QComboBox(pParent),
WBaseWidget(this),
m_bQuickEffectChain(false),
m_pChainPresetManager(pEffectsManager->getChainPresetManager()),
m_pEffectsManager(pEffectsManager) {
// Prevent this widget from getting focused by Tab/Shift+Tab
// to avoid interfering with using the library via keyboard.
// Allow click focus though so the list can always be opened by mouse,
// see https://github.com/mixxxdj/mixxx/issues/10184
setFocusPolicy(Qt::ClickFocus);
}
void WEffectChainPresetSelector::setup(const QDomNode& node, const SkinContext& context) {
m_pChain = EffectWidgetUtils::getEffectChainFromNode(
node, context, m_pEffectsManager);
VERIFY_OR_DEBUG_ASSERT(m_pChain != nullptr) {
SKIN_WARNING(node, context)
<< "EffectChainPresetSelector node could not attach to EffectChain";
return;
}
auto chainPresetListUpdateSignal = &EffectChainPresetManager::effectChainPresetListUpdated;
auto pQuickEffectChain = qobject_cast<QuickEffectChain*>(m_pChain.data());
if (pQuickEffectChain) {
chainPresetListUpdateSignal = &EffectChainPresetManager::quickEffectChainPresetListUpdated;
m_bQuickEffectChain = true;
}
connect(m_pChainPresetManager.data(),
chainPresetListUpdateSignal,
this,
&WEffectChainPresetSelector::populate);
connect(m_pChain.data(),
&EffectChain::chainPresetChanged,
this,
&WEffectChainPresetSelector::slotChainPresetChanged);
connect(this,
QOverload<int>::of(&QComboBox::activated),
this,
&WEffectChainPresetSelector::slotEffectChainPresetSelected);
populate();
}
void WEffectChainPresetSelector::populate() {
blockSignals(true);
clear();
QFontMetrics metrics(font());
QList<EffectChainPresetPointer> presetList;
if (m_bQuickEffectChain) {
presetList = m_pEffectsManager->getChainPresetManager()->getQuickEffectPresetsSorted();
} else {
presetList = m_pEffectsManager->getChainPresetManager()->getPresetsSorted();
}
for (int i = 0; i < presetList.size(); i++) {
auto pChainPreset = presetList.at(i);
QString elidedDisplayName = metrics.elidedText(pChainPreset->name(),
Qt::ElideMiddle,
view()->width() - 2);
addItem(elidedDisplayName, QVariant(pChainPreset->name()));
setItemData(i, pChainPreset->name(), Qt::ToolTipRole);
}
slotChainPresetChanged(m_pChain->presetName());
blockSignals(false);
}
void WEffectChainPresetSelector::slotEffectChainPresetSelected(int index) {
m_pChain->loadChainPreset(
m_pChainPresetManager->getPreset(currentData().toString()));
// After selecting an effect move focus to the tracks table in order
// to immediately allow keyboard shortcuts again.
// TODO(ronso0) switch to previously focused (library?) widget instead
ControlObject::set(ConfigKey("[Library]", "focused_widget"),
static_cast<double>(FocusWidget::TracksTable));
}
void WEffectChainPresetSelector::slotChainPresetChanged(const QString& name) {
setCurrentIndex(findData(name));
setBaseTooltip(itemData(currentIndex(), Qt::ToolTipRole).toString());
}
bool WEffectChainPresetSelector::event(QEvent* pEvent) {
if (pEvent->type() == QEvent::ToolTip) {
updateTooltip();
} else if (pEvent->type() == QEvent::Wheel && !hasFocus()) {
// don't change preset by scrolling hovered preset selector
return true;
}
return QComboBox::event(pEvent);
}
void WEffectChainPresetSelector::paintEvent(QPaintEvent* e) {
Q_UNUSED(e);
// The default paint implementation aligns the text based on the layout direction.
// Override to allow qss to align the text of the closed combobox with the
// Quick effect controls in the mixer.
QStylePainter painter(this);
QStyleOptionComboBox comboStyle;
// Inititialize the style and draw the frame, down-arrow etc.
// Note: using 'comboStyle.initFrom(this)' and 'painter.drawComplexControl(...)
// here would not paint the hover style of the down arrow.
initStyleOption(&comboStyle);
style()->drawComplexControl(QStyle::CC_ComboBox, &comboStyle, &painter, this);
QStyleOptionButton buttonStyle;
buttonStyle.initFrom(this);
QRect buttonRect = style()->subControlRect(
QStyle::CC_ComboBox, &comboStyle, QStyle::SC_ComboBoxEditField, this);
buttonStyle.rect = buttonRect;
QFontMetrics metrics(font());
// Since the chain selector and the popup can differ in width,
// elide the button text independently from the popup display name.
buttonStyle.text = metrics.elidedText(
currentData().toString(),
Qt::ElideRight,
buttonRect.width());
// Draw the text for the selector button. Alternative: painter.drawControl(...)
style()->drawControl(QStyle::CE_PushButtonLabel, &buttonStyle, &painter, this);
}
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