File indexing completed on 2024-05-26 04:29:56

 /*
  *  SPDX-FileCopyrightText: 2016 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_brush_hud.h"
 
 #include <QGuiApplication>
 #include <QVBoxLayout>
 #include <QHBoxLayout>
 #include <QPointer>
 #include <QLabel>
 #include <QPainter>
 #include <QPaintEvent>
 #include <QScrollArea>
 #include <QEvent>
 #include <QToolButton>
 #include <QAction>
 
 #include "kis_uniform_paintop_property.h"
 #include "kis_slider_based_paintop_property.h"
 #include "kis_uniform_paintop_property_widget.h"
 #include "kis_canvas_resource_provider.h"
 #include "kis_paintop_preset.h"
 #include "kis_paintop_settings.h"
 #include "kis_signal_auto_connection.h"
 #include "KisPaintOpPresetUpdateProxy.h"
 #include "kis_icon_utils.h"
 #include "kis_dlg_brush_hud_config.h"
 #include "kis_brush_hud_properties_config.h"
 #include "kis_elided_label.h"
 
 #include "kis_canvas2.h"
 #include "KisViewManager.h"
 #include "kactioncollection.h"
 
 #include "kis_debug.h"
 
 
 struct KisBrushHud::Private
 {
     QPointer<KisElidedLabel> lblPresetName;
     QPointer<QLabel> lblPresetIcon;
     QPointer<QWidget> wdgProperties;
     QPointer<QScrollArea> wdgPropertiesArea;
     QPointer<QVBoxLayout> propertiesLayout;
     QPointer<QToolButton> btnReloadPreset;
     QPointer<QToolButton> btnConfigure;
 
     KisCanvasResourceProvider *provider;
 
     KisSignalAutoConnectionsStore connections;
     KisSignalAutoConnectionsStore presetConnections;
 
     KisPaintOpPresetSP currentPreset;
 };
 
 KisBrushHud::KisBrushHud(KisCanvasResourceProvider *provider, QWidget *parent)
     : QWidget(parent, Qt::FramelessWindowHint),
       m_d(new Private)
 {
     m_d->provider = provider;
 
     QVBoxLayout *layout = new QVBoxLayout(this);
 
     QHBoxLayout *labelLayout = new QHBoxLayout();
     m_d->lblPresetIcon = new QLabel(this);
     const QSize iconSize = QSize(22,22);
     m_d->lblPresetIcon->setMinimumSize(iconSize);
     m_d->lblPresetIcon->setMaximumSize(iconSize);
     m_d->lblPresetIcon->setScaledContents(true);
 
     m_d->lblPresetName = new KisElidedLabel("<Preset Name>", Qt::ElideMiddle, this);
 
     m_d->btnReloadPreset = new QToolButton(this);
     m_d->btnReloadPreset->setAutoRaise(true);
     m_d->btnReloadPreset->setToolTip(i18n("Reload Original Preset"));
 
     m_d->btnConfigure = new QToolButton(this);
     m_d->btnConfigure->setAutoRaise(true);
     m_d->btnConfigure->setToolTip(i18n("Configure the on-canvas brush editor"));
 
     connect(m_d->btnReloadPreset, SIGNAL(clicked()), SLOT(slotReloadPreset()));
     connect(m_d->btnConfigure, SIGNAL(clicked()), SLOT(slotConfigBrushHud()));
 
     labelLayout->addWidget(m_d->lblPresetIcon);
     labelLayout->addWidget(m_d->lblPresetName);
     labelLayout->addWidget(m_d->btnReloadPreset);
     labelLayout->addWidget(m_d->btnConfigure);
 
     layout->addLayout(labelLayout);
 
     m_d->wdgPropertiesArea = new QScrollArea(this);
     m_d->wdgPropertiesArea->setAlignment(Qt::AlignLeft | Qt::AlignTop);
     m_d->wdgPropertiesArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
 
     m_d->wdgPropertiesArea->setWidgetResizable(true);
 
     m_d->wdgProperties = new QWidget(this);
     m_d->propertiesLayout = new QVBoxLayout(m_d->wdgProperties);
     m_d->propertiesLayout->setSpacing(0);
     m_d->propertiesLayout->setContentsMargins(0, 0, 22, 0);
     m_d->propertiesLayout->setSizeConstraint(QLayout::SetMinimumSize);
 
     // not adding any widgets until explicitly requested
 
     m_d->wdgPropertiesArea->setWidget(m_d->wdgProperties);
     layout->addWidget(m_d->wdgPropertiesArea);
 
     // unfortunately the sizeHint() function of QScrollArea is pretty broken
     // and it would add another event loop iteration to react to it anyway,
     // so let's just catch LayoutRequest events from the properties widget directly
     m_d->wdgProperties->installEventFilter(this);
 
     updateIcons();
 
     setCursor(Qt::ArrowCursor);
 
     // Prevent tablet events from being captured by the canvas
     setAttribute(Qt::WA_NoMousePropagation, true);
 }
 
 
 
 KisBrushHud::~KisBrushHud()
 {
 }
 
 void KisBrushHud::updateIcons()
 {
     this->setPalette(qApp->palette());
     for(int i=0; i<this->children().size(); i++) {
         QWidget *w = qobject_cast<QWidget*>(this->children().at(i));
         if (w) {
             w->setPalette(qApp->palette());
         }
     }
     for(int i=0; i<m_d->wdgProperties->children().size(); i++) {
         KisUniformPaintOpPropertyWidget *w = qobject_cast<KisUniformPaintOpPropertyWidget*>(m_d->wdgProperties->children().at(i));
         if (w) {
             w->slotThemeChanged(qApp->palette());
         }
     }
     m_d->btnReloadPreset->setIcon(KisIconUtils::loadIcon("reload-preset-16"));
     m_d->btnConfigure->setIcon(KisIconUtils::loadIcon("applications-system"));
 }
 
 void KisBrushHud::slotReloadProperties()
 {
     m_d->presetConnections.clear();
     clearProperties();
     updateProperties();
 }
 
 void KisBrushHud::clearProperties() const
 {
     while (m_d->propertiesLayout->count()) {
         QLayoutItem *item = m_d->propertiesLayout->takeAt(0);
 
         QWidget *w = item->widget();
         if (w) {
             w->deleteLater();
         }
 
         delete item;
     }
 
     m_d->currentPreset.clear();
 }
 
 void KisBrushHud::updateProperties()
 {
     KisPaintOpPresetSP preset = m_d->provider->currentPreset();
 
     if (preset == m_d->currentPreset) return;
 
     m_d->presetConnections.clear();
     clearProperties();
 
     m_d->currentPreset = preset;
     m_d->presetConnections.addConnection(
         m_d->currentPreset->updateProxy(), SIGNAL(sigUniformPropertiesChanged()),
         this, SLOT(slotReloadProperties()));
 
     m_d->lblPresetIcon->setPixmap(QPixmap::fromImage(preset->image()));
     m_d->lblPresetName->setLongText(preset->name());
 
     QList<KisUniformPaintOpPropertySP> properties;
 
     {
         QList<KisUniformPaintOpPropertySP> allProperties = preset->uniformProperties();
         QList<KisUniformPaintOpPropertySP> discardedProperties;
 
         KisBrushHudPropertiesConfig cfg;
         cfg.filterProperties(preset->paintOp().id(),
                              allProperties,
                              &properties,
                              &discardedProperties);
     }
 
     Q_FOREACH(auto property, properties) {
         QWidget *w = 0;
 
         if (!property->isVisible()) continue;
 
         if (property->type() == KisUniformPaintOpProperty::Int) {
             w = new KisUniformPaintOpPropertyIntSlider(property, m_d->wdgProperties);
         } else if (property->type() == KisUniformPaintOpProperty::Double) {
             w = new KisUniformPaintOpPropertyDoubleSlider(property, m_d->wdgProperties);
         } else if (property->type() == KisUniformPaintOpProperty::Bool) {
             w = new KisUniformPaintOpPropertyCheckBox(property, m_d->wdgProperties);
         } else if (property->type() == KisUniformPaintOpProperty::Combo) {
             w = new KisUniformPaintOpPropertyComboBox(property, m_d->wdgProperties);
         }
 
         if (w) {
             w->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
             m_d->propertiesLayout->addWidget(w);
         }
     }
 
     m_d->propertiesLayout->addStretch();
 }
 
 void KisBrushHud::showEvent(QShowEvent *event)
 {
     m_d->connections.clear();
     m_d->connections.addUniqueConnection(
         m_d->provider->resourceManager(), SIGNAL(canvasResourceChanged(int,QVariant)),
         this, SLOT(slotCanvasResourceChanged(int,QVariant)));
 
     updateProperties();
 
     QWidget::showEvent(event);
 }
 
 void KisBrushHud::hideEvent(QHideEvent *event)
 {
     m_d->connections.clear();
     QWidget::hideEvent(event);
 
     clearProperties();
 }
 
 void KisBrushHud::slotCanvasResourceChanged(int key, const QVariant &resource)
 {
     Q_UNUSED(resource);
 
     if (key == KoCanvasResource::CurrentPaintOpPreset) {
         updateProperties();
     }
 }
 
 void KisBrushHud::paintEvent(QPaintEvent *event)
 {
     QColor bgColor = palette().color(QPalette::Window);
 
     QPainter painter(this);
     painter.fillRect(rect() & event->rect(), bgColor);
     painter.end();
 
     QWidget::paintEvent(event);
 }
 
 bool KisBrushHud::event(QEvent *event)
 {
     switch (event->type()) {
     case QEvent::TabletPress:
     case QEvent::TabletMove:
     case QEvent::TabletRelease:
         // Allow the tablet event to be translated to a mouse event on certain platforms
         break;
     case QEvent::MouseButtonPress:
     case QEvent::MouseMove:
     case QEvent::MouseButtonRelease:
     case QEvent::Wheel:
         event->accept();
         return true;
     default:
         break;
     }
 
     return QWidget::event(event);
 }
 
 bool KisBrushHud::eventFilter(QObject *watched, QEvent *event)
 {
     // LayoutRequest event is sent from a layout to its parent widget
     // when size requirements have been determined, i.e. sizeHint is available
     if (watched == m_d->wdgProperties && event->type() == QEvent::LayoutRequest)
     {
         int totalMargin = 2 * m_d->wdgPropertiesArea->frameWidth();
         m_d->wdgPropertiesArea->setMinimumWidth(m_d->wdgProperties->sizeHint().width() + totalMargin);
     }
     return false;
 }
 
 void KisBrushHud::slotConfigBrushHud()
 {
     if (!m_d->currentPreset) return;
 
     KisDlgConfigureBrushHud dlg(m_d->currentPreset);
     dlg.exec();
 
     slotReloadProperties();
 }
 
 void KisBrushHud::slotReloadPreset()
 {
     KisCanvas2* canvas = dynamic_cast<KisCanvas2*>(m_d->provider->canvas());
     KIS_ASSERT_RECOVER_RETURN(canvas);
     canvas->viewManager()->actionCollection()->action("reload_preset_action")->trigger();
 }