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/*
* SPDX-FileCopyrightText: 2025 Gleb Kasachou <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "zoomwidgetaction.h"
#include <KLocalizedString>
#include <QEvent>
#include <QHBoxLayout>
#include <QKeyEvent>
#include <QMenu>
#include <QPaintEvent>
#include <QStyleOptionMenuItem>
#include <QStylePainter>
#include <QToolBar>
#include <QToolButton>
class ZoomWidget : public QWidget
{
public:
ZoomWidget(QWidget *parent)
: QWidget(parent)
{
}
protected:
void paintEvent(QPaintEvent *event) override
{
Q_UNUSED(event);
QStylePainter painter(this);
QStyleOptionMenuItem option;
option.initFrom(this);
option.menuHasCheckableItems = true;
option.checkType = QStyleOptionMenuItem::NotCheckable;
option.text = i18nc("@action:inmenu", "Zoom");
option.icon = QIcon::fromTheme(QStringLiteral("zoom"));
option.reservedShortcutWidth = 0;
option.menuItemType = QStyleOptionMenuItem::Normal;
option.maxIconWidth = 0;
for (QAction *action : qobject_cast<QMenu *>(parent())->actions()) {
if (!action->icon().isNull()) {
option.maxIconWidth = style()->pixelMetric(QStyle::PM_SmallIconSize) + 4;
break;
}
}
painter.drawControl(QStyle::CE_MenuItem, option);
}
};
ZoomWidgetAction::ZoomWidgetAction(QAction *zoomInAction, QAction *zoomResetAction, QAction *zoomOutAction, QObject *parent)
: KToolBarPopupAction(QIcon::fromTheme(QStringLiteral("zoom")), i18nc("@action:intoolbar", "Zoom"), parent)
, m_zoomInAction(zoomInAction)
, m_zoomResetAction(zoomResetAction)
, m_zoomOutAction(zoomOutAction)
{
// This is a property that KXMLGui reads to determine whether this action
// should be included in the shortcut configuration UI
setProperty("isShortcutConfigurable", false);
setPopupMode(InstantPopup);
popupMenu()->addActions({zoomInAction, zoomResetAction, zoomOutAction});
}
bool ZoomWidgetAction::eventFilter(QObject *object, QEvent *event)
{
if (event->type() != QEvent::KeyPress) {
return false;
}
QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
QWidget *widget = qobject_cast<QWidget *>(object);
if (keyEvent->keyCombination() == QKeyCombination(Qt::Modifier::SHIFT, Qt::Key_Backtab) || keyEvent->key() == Qt::Key_Left
|| keyEvent->key() == Qt::Key_Up) {
QWidget *previous = widget->previousInFocusChain();
if (previous == widget->parentWidget() || !qobject_cast<QToolButton *>(previous)->isEnabled()) {
return false;
}
previous->setFocus(Qt::BacktabFocusReason);
event->accept();
return true;
}
if (keyEvent->keyCombination() == QKeyCombination(Qt::Key_Tab) || keyEvent->key() == Qt::Key_Right || keyEvent->key() == Qt::Key_Down) {
QWidget *next = widget->nextInFocusChain();
if (next->parentWidget() != widget->parentWidget() || !qobject_cast<QToolButton *>(next)->isEnabled()) {
return false;
}
next->setFocus(Qt::TabFocusReason);
event->accept();
return true;
}
return false;
}
QWidget *ZoomWidgetAction::createWidget(QWidget *parent)
{
if (qobject_cast<QToolBar *>(parent)) {
return KToolBarPopupAction::createWidget(parent);
}
ZoomWidget *zoomWidget = new ZoomWidget(parent);
QHBoxLayout *zoomWidgetLayout = new QHBoxLayout;
zoomWidgetLayout->setContentsMargins(0, 0, 0, 0);
zoomWidget->setLayout(zoomWidgetLayout);
zoomWidget->setFocusPolicy(Qt::StrongFocus);
QSpacerItem *zoomSpacer = new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Minimum);
zoomWidgetLayout->addSpacerItem(zoomSpacer);
int maxButtonSize = parent->style()->pixelMetric(QStyle::PM_ButtonIconSize) + 10;
QToolButton *zoomOutButton = new QToolButton(zoomWidget);
zoomOutButton->setMaximumSize(maxButtonSize, maxButtonSize);
zoomOutButton->setDefaultAction(m_zoomOutAction);
zoomOutButton->installEventFilter(this);
zoomWidgetLayout->addWidget(zoomOutButton);
zoomWidget->setFocusProxy(zoomOutButton);
QIcon zoomOutIcon;
QPixmap zoomOutPixmapNormal = m_zoomOutAction->icon().pixmap(zoomOutButton->iconSize(), QIcon::Normal);
QPixmap zoomOutPixmapDisabled = m_zoomOutAction->icon().pixmap(zoomOutButton->iconSize(), QIcon::Disabled);
QPixmap zoomOutPixmapActive = m_zoomOutAction->icon().pixmap(zoomOutButton->iconSize(), QIcon::Active);
zoomOutIcon.addPixmap(zoomOutPixmapNormal, QIcon::Normal);
zoomOutIcon.addPixmap(zoomOutPixmapDisabled, QIcon::Disabled);
zoomOutIcon.addPixmap(zoomOutPixmapActive, QIcon::Active);
zoomOutIcon.addPixmap(zoomOutPixmapNormal, QIcon::Selected);
m_zoomOutAction->setIcon(zoomOutIcon);
QToolButton *zoomResetButton = new QToolButton(zoomWidget);
zoomResetButton->setMaximumSize(maxButtonSize, maxButtonSize);
zoomResetButton->setDefaultAction(m_zoomResetAction);
zoomResetButton->installEventFilter(this);
zoomWidgetLayout->addWidget(zoomResetButton);
QIcon zoomResetIcon;
QPixmap zoomResetPixmapNormal = m_zoomResetAction->icon().pixmap(zoomResetButton->iconSize(), QIcon::Normal);
QPixmap zoomResetPixmapDisabled = m_zoomResetAction->icon().pixmap(zoomResetButton->iconSize(), QIcon::Disabled);
QPixmap zoomResetPixmapActive = m_zoomResetAction->icon().pixmap(zoomResetButton->iconSize(), QIcon::Active);
zoomResetIcon.addPixmap(zoomResetPixmapNormal, QIcon::Normal);
zoomResetIcon.addPixmap(zoomResetPixmapDisabled, QIcon::Disabled);
zoomResetIcon.addPixmap(zoomResetPixmapActive, QIcon::Active);
zoomResetIcon.addPixmap(zoomResetPixmapNormal, QIcon::Selected);
m_zoomResetAction->setIcon(zoomResetIcon);
QToolButton *zoomInButton = new QToolButton(zoomWidget);
zoomInButton->setMaximumSize(maxButtonSize, maxButtonSize);
zoomInButton->setDefaultAction(m_zoomInAction);
zoomInButton->installEventFilter(this);
zoomWidgetLayout->addWidget(zoomInButton);
QIcon zoomInIcon;
QPixmap zoomInPixmapNormal = m_zoomInAction->icon().pixmap(zoomInButton->iconSize(), QIcon::Normal);
QPixmap zoomInPixmapDisabled = m_zoomInAction->icon().pixmap(zoomInButton->iconSize(), QIcon::Disabled);
QPixmap zoomInPixmapActive = m_zoomInAction->icon().pixmap(zoomInButton->iconSize(), QIcon::Active);
zoomInIcon.addPixmap(zoomInPixmapNormal, QIcon::Normal);
zoomInIcon.addPixmap(zoomInPixmapDisabled, QIcon::Disabled);
zoomInIcon.addPixmap(zoomInPixmapActive, QIcon::Active);
zoomInIcon.addPixmap(zoomInPixmapNormal, QIcon::Selected);
m_zoomInAction->setIcon(zoomInIcon);
return zoomWidget;
}
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