Differential D11081 Diff 28782 plugins/problemreporter/actionmenu.cpp

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plugins/problemreporter/actionmenu.cpp

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		1		/*
		2		* Copyright 2018 Anton Anikin <anton@anikin.xyz>
		3		*
		4		* This program is free software; you can redistribute it and/or modify
		5		* it under the terms of the GNU Library General Public License as
		6		* published by the Free Software Foundation; either version 2 of the
		7		* License, or (at your option) any later version.
		8		*
		9		* This program is distributed in the hope that it will be useful,
		10		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		11		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		12		* GNU General Public License for more details.
		13		*
		14		* You should have received a copy of the GNU General Public
		15		* License along with this program; if not, write to the
		16		* Free Software Foundation, Inc.,
		17		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
		18		*/
		19
		20		#include "actionmenu.h"
		21
		22		#include <KLocalizedString>
		23
		24		#include <QApplication>
		25		#include <QHelpEvent>
		26		#include <QMenu>
		27		#include <QToolButton>
		28		#include <QToolTip>
		29		#include <QStyleOption>
		30		#include <QStylePainter>
		31
		32		namespace KDevelop
		33		{
		34
		35		class ActionMenuButton : public QToolButton
		36		{
		37		Q_OBJECT
		38
		39		public:
		40		ActionMenuButton(const QString& prefix, QWidget* parent = nullptr)
		41		: QToolButton(parent)
		42		, m_prefix(prefix)
		43		{
		44		setPopupMode(QToolButton::InstantPopup);
		45		setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
		46		}
		47
		48		~ActionMenuButton() override
		49		{
		50		}
		51
		52		QSize sizeHint() const override
		53		{
		54		auto fm = fontMetrics();
		55		int textHeight = 0;
		56		int textWidth = 0;
		57		int spaceWidth = fm.width(QLatin1Char(' '));
		58
		59		for (auto action : menu()->actions())
		60		{
		61		auto textSize = fm.size(
		62		Qt::TextShowMnemonic,
		63		QStringLiteral("%1: %2").arg(m_prefix, action->text()));
		64
		65		textHeight = qMax(textHeight, textSize.height());
		66		textWidth = qMax(textWidth, textSize.width());
		67		}
		68
		69		QStyleOptionToolButton opt;
		70		initStyleOption(&opt);
		71		opt.rect.setHeight(textHeight);
		72		opt.rect.setWidth(textWidth + 2 * spaceWidth);
		73
		74		auto fullSize = style()->sizeFromContents(QStyle::CT_ToolButton, &opt, opt.rect.size(), this).
		75		expandedTo(QApplication::globalStrut());
		76
		77		m_margin = (fullSize.width() - opt.rect.width()) / 2 + spaceWidth;
		78
		79		return fullSize;
		80		}
		81
		82		void paintEvent(QPaintEvent* event) override
		83		{
		84		Q_UNUSED(event);
		85
		86		QStylePainter sp(this);
		87		QStyleOptionToolButton opt;
		88		initStyleOption(&opt);
		89
		90		opt.text.clear();
		91		opt.icon = QIcon();
		92		sp.drawComplexControl(QStyle::CC_ToolButton, opt);
		93
		94		opt.rect.adjust(m_margin, 0, 0, 0);
		95		sp.drawText(opt.rect, Qt::AlignLeft \| Qt::AlignVCenter, text());
		96		}
		97
		98		protected:
		99		QString m_prefix;
		100		mutable int m_margin;
		101		};
		102
		103		ActionMenu::ActionMenu(const QString& prefix, QObject* parent)
		104		: QWidgetAction(parent)
		105		, m_prefix(prefix)
		106		, m_group(new QActionGroup(this))
		107		{
		108		setMenu(new QMenu);
		109		menu()->installEventFilter(this);
		110		}
		111
		112		ActionMenu::~ActionMenu()
		113		{
		114		delete menu();
		115		}
		116
		117		QAction* ActionMenu::addAction(const QString& text, const QString& toolTip, int id)
		118		{
		119		auto action = new QAction(text, this);
		120		action->setToolTip(toolTip);
		121		action->setCheckable(true);
		122
		123		m_mapper[id] = action;
		124
		125		connect(action, &QAction::triggered,
		126		this, [this, id]() {
		127		emit actionSelected(id);
		128		});
		129
		130		menu()->addAction(action);
		131		m_group->addAction(action);
		132
		133		return action;
		134		}
		135
		136		void ActionMenu::selectAction(int id)
		137		{
		138		if (auto action = m_mapper.value(id, nullptr)) {
		139		action->setChecked(true);
		140		setText(QStringLiteral("%1: %2").arg(m_prefix, action->text()));
		141		}
		142		}
		143
		144		QWidget* ActionMenu::createWidget(QWidget* parent)
		145		{
		146		auto button = new ActionMenuButton(m_prefix, parent);
		147		button->setMenu(menu());
		148		button->setDefaultAction(this);
		149
		150		return button;
		151		}
		152
		153		bool ActionMenu::eventFilter(QObject* obj, QEvent* event)
		154		{
		155		if (obj == menu()) {
		156		if (event->type() == QEvent::ToolTip && menu()->activeAction()) {
		157		auto helpEvent = static_cast<QHelpEvent*>(event);
		158		QToolTip::showText(helpEvent->globalPos(), menu()->activeAction()->toolTip());
		159		} else {
		160		QToolTip::hideText();
		161		}
		162		}
		163
		164		return QObject::eventFilter(obj, event);
		165		}
		166
		167		}
		168
		169		#include "actionmenu.moc"