ab45659677
Summary: This adds support for the new on-screen-message support to the kwineffects API and makes use of it in the colorpicker effect. Not yet added to screenshot effect as for that we need support for skip close animation on the on-screen-message window. Reviewers: #plasma, #kwin Subscribers: plasma-devel, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D3803
128 lines
4 KiB
C++
128 lines
4 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2016 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "colorpicker.h"
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#include <kwinglutils.h>
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#include <kwinglutils_funcs.h>
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#include <QDBusConnection>
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#include <KLocalizedString>
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#include <QDBusMetaType>
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Q_DECLARE_METATYPE(QColor)
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QDBusArgument &operator<< (QDBusArgument &argument, const QColor &color)
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{
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argument.beginStructure();
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argument << color.rgba();
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argument.endStructure();
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return argument;
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}
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const QDBusArgument &operator>>(const QDBusArgument &argument, QColor &color)
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{
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argument.beginStructure();
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QRgb rgba;
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argument >> rgba;
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argument.endStructure();
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color = QColor::fromRgba(rgba);
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return argument;
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}
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namespace KWin
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{
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bool ColorPickerEffect::supported()
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{
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return effects->isOpenGLCompositing();
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}
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ColorPickerEffect::ColorPickerEffect()
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: m_scheduledPosition(QPoint(-1, -1))
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{
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qDBusRegisterMetaType<QColor>();
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QDBusConnection::sessionBus().registerObject(QStringLiteral("/ColorPicker"), this, QDBusConnection::ExportScriptableContents);
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}
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ColorPickerEffect::~ColorPickerEffect() = default;
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void ColorPickerEffect::paintScreen(int mask, QRegion region, ScreenPaintData &data)
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{
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m_cachedOutputGeometry = data.outputGeometry();
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effects->paintScreen(mask, region, data);
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}
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void ColorPickerEffect::postPaintScreen()
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{
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effects->postPaintScreen();
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if (m_scheduledPosition != QPoint(-1, -1) && (m_cachedOutputGeometry.isEmpty() || m_cachedOutputGeometry.contains(m_scheduledPosition))) {
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uint8_t data[3];
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const QRect geo = GLRenderTarget::virtualScreenGeometry();
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glReadnPixels(m_scheduledPosition.x() - geo.x(), geo.height() - geo.y() - m_scheduledPosition.y(), 1, 1, GL_RGB, GL_UNSIGNED_BYTE, 3, data);
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QDBusConnection::sessionBus().send(m_replyMessage.createReply(QColor(data[0], data[1], data[2])));
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m_picking = false;
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m_scheduledPosition = QPoint(-1, -1);
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}
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}
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QColor ColorPickerEffect::pick()
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{
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if (!calledFromDBus()) {
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return QColor();
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}
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if (m_picking) {
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sendErrorReply(QDBusError::Failed, "Color picking is already in progress");
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return QColor();
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}
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m_picking = true;
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m_replyMessage = message();
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setDelayedReply(true);
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showInfoMessage();
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effects->startInteractivePositionSelection(
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[this] (const QPoint &p) {
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hideInfoMessage();
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if (p == QPoint(-1, -1)) {
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// error condition
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QDBusConnection::sessionBus().send(m_replyMessage.createErrorReply(QStringLiteral("org.kde.kwin.ColorPicker.Error.Cancelled"), "Color picking got cancelled"));
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m_picking = false;
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} else {
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m_scheduledPosition = p;
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effects->addRepaintFull();
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}
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}
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);
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return QColor();
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}
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void ColorPickerEffect::showInfoMessage()
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{
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effects->showOnScreenMessage(i18n("Select a position for color picking with left click or enter.\nEscape or right click to cancel."), QStringLiteral("color-picker"));
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}
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void ColorPickerEffect::hideInfoMessage()
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{
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effects->hideOnScreenMessage();
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}
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bool ColorPickerEffect::isActive() const
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{
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return m_picking && ((m_scheduledPosition != QPoint(-1, -1))) && !effects->isScreenLocked();
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}
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} // namespace
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