mirror of
https://github.com/linuxdeepin/dde-dock.git
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fe42f84253
目前dock获取应用snap shot是通过函数getImageDSHM(), 该函数内部调用了XGetWindowProperty来获取窗口属性， 这将导致在wayland环境下无法正常运行。 Log: 修复wayland环境下获取应用snap shot导致任务栏崩溃的问题 Influence: 任务栏预览功能 Task: https://pms.uniontech.com/zentao/task-view-88921.html Change-Id: Ic565c62512768fc3ba28c72a05cdd0f5162a8711
500 lines
16 KiB
C++
500 lines
16 KiB
C++
/*
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* Copyright (C) 2011 ~ 2018 Deepin Technology Co., Ltd.
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*
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* Author: sbw <sbw@sbw.so>
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*
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* Maintainer: sbw <sbw@sbw.so>
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*
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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 3 of the License, or
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* any later version.
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*
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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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*
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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 "appsnapshot.h"
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#include "previewcontainer.h"
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#include "../widgets/tipswidget.h"
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#include "utils.h"
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#include <DStyle>
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#include <X11/Xlib.h>
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#include <X11/X.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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#include <sys/shm.h>
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#include <QX11Info>
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#include <QPainter>
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#include <QVBoxLayout>
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#include <QSizeF>
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#include <QTimer>
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struct SHMInfo {
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long shmid;
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long width;
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long height;
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long bytesPerLine;
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long format;
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struct Rect {
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long x;
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long y;
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long width;
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long height;
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} rect;
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};
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using namespace Dock;
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AppSnapshot::AppSnapshot(const WId wid, QWidget *parent)
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: QWidget(parent)
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, m_wid(wid)
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, m_closeAble(false)
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, m_isWidowHidden(false)
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, m_title(new TipsWidget(this))
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, m_3DtitleBtn(nullptr)
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, m_waitLeaveTimer(new QTimer(this))
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, m_closeBtn2D(new DIconButton(this))
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, m_wmHelper(DWindowManagerHelper::instance())
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, m_dockDaemonInter(new DockDaemonInter("com.deepin.dde.daemon.Dock", "/com/deepin/dde/daemon/Dock", QDBusConnection::sessionBus(), this))
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{
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m_closeBtn2D->setFixedSize(SNAP_CLOSE_BTN_WIDTH, SNAP_CLOSE_BTN_WIDTH);
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m_closeBtn2D->setIconSize(QSize(SNAP_CLOSE_BTN_WIDTH, SNAP_CLOSE_BTN_WIDTH));
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m_closeBtn2D->setObjectName("closebutton-2d");
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m_closeBtn2D->setIcon(QIcon(":/icons/resources/close_round_normal.svg"));
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m_closeBtn2D->setVisible(false);
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m_closeBtn2D->setFlat(true);
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m_closeBtn2D->installEventFilter(this);
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m_title->setObjectName("AppSnapshotTitle");
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QHBoxLayout *centralLayout = new QHBoxLayout;
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centralLayout->addWidget(m_title);
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centralLayout->setMargin(0);
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setLayout(centralLayout);
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setAcceptDrops(true);
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resize(SNAP_WIDTH, SNAP_HEIGHT);
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connect(m_closeBtn2D, &DIconButton::clicked, this, &AppSnapshot::closeWindow, Qt::QueuedConnection);
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connect(m_wmHelper, &DWindowManagerHelper::hasCompositeChanged, this, &AppSnapshot::compositeChanged, Qt::QueuedConnection);
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QTimer::singleShot(1, this, &AppSnapshot::compositeChanged);
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}
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void AppSnapshot::setWindowState()
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{
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if (m_isWidowHidden) {
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m_dockDaemonInter->MinimizeWindow(m_wid);
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}
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}
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// 每次更新窗口信息时更新标题
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void AppSnapshot::updateTitle()
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{
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// 2D不显示
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if (!m_wmHelper->hasComposite())
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return;
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if (!m_3DtitleBtn) {
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m_3DtitleBtn = new DPushButton(this);
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m_3DtitleBtn->setAccessibleName("AppPreviewTitle");
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m_3DtitleBtn->setBackgroundRole(QPalette::Base);
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m_3DtitleBtn->setForegroundRole(QPalette::Text);
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m_3DtitleBtn->setFocusPolicy(Qt::NoFocus);
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m_3DtitleBtn->setAttribute(Qt::WA_TransparentForMouseEvents);
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m_3DtitleBtn->setFixedHeight(36);
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m_3DtitleBtn->setVisible(false);
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}
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QFontMetrics fm(m_3DtitleBtn->font());
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int textWidth = fm.width(title()) + 10 + BTN_TITLE_MARGIN;
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int titleWidth = SNAP_WIDTH - (TITLE_MARGIN * 2 + BORDER_MARGIN);
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if (textWidth < titleWidth) {
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m_3DtitleBtn->setFixedWidth(textWidth);
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m_3DtitleBtn->setText(title());
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} else {
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QString str = title();
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/*某些特殊字符只显示一半 如"Q"," W"，所以加一个空格保证字符显示完整,*/
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str.insert(0, " ");
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QString strTtile = m_3DtitleBtn->fontMetrics().elidedText(str, Qt::ElideRight, titleWidth - BTN_TITLE_MARGIN);
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m_3DtitleBtn->setText(strTtile);
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m_3DtitleBtn->setFixedWidth(titleWidth + BTN_TITLE_MARGIN);
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}
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// 移动到预览图中下
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m_3DtitleBtn->move(QPoint(SNAP_WIDTH / 2, SNAP_HEIGHT - m_3DtitleBtn->height() / 2 - TITLE_MARGIN) - m_3DtitleBtn->rect().center());
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}
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void AppSnapshot::setTitleVisible(bool bVisible)
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{
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if (m_3DtitleBtn)
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m_3DtitleBtn->setVisible(bVisible && m_wmHelper->hasComposite());
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}
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void AppSnapshot::closeWindow() const
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{
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const auto display = Utils::IS_WAYLAND_DISPLAY ? XOpenDisplay(nullptr) : QX11Info::display();
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if (!display) {
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qWarning() << "Error: get display failed!";
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return;
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}
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XEvent e;
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memset(&e, 0, sizeof(e));
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e.xclient.type = ClientMessage;
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e.xclient.window = m_wid;
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e.xclient.message_type = XInternAtom(display, "WM_PROTOCOLS", true);
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e.xclient.format = 32;
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e.xclient.data.l[0] = XInternAtom(display, "WM_DELETE_WINDOW", false);
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e.xclient.data.l[1] = CurrentTime;
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Q_EMIT requestCloseAppSnapshot();
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XSendEvent(display, m_wid, false, NoEventMask, &e);
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XFlush(display);
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}
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void AppSnapshot::compositeChanged() const
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{
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const bool composite = m_wmHelper->hasComposite();
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m_title->setVisible(!composite);
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QTimer::singleShot(1, this, &AppSnapshot::fetchSnapshot);
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}
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void AppSnapshot::setWindowInfo(const WindowInfo &info)
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{
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m_windowInfo = info;
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QFontMetrics fm(m_title->font());
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QString strTtile = m_title->fontMetrics().elidedText(m_windowInfo.title, Qt::ElideRight, width() - m_closeBtn2D->width());
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m_title->setText(strTtile);
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updateTitle();
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// 只有在X11下，才能通过XGetWindowProperty获取窗口属性
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if (qEnvironmentVariable("XDG_SESSION_TYPE").contains("x11")) {
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getWindowState();
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}
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}
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void AppSnapshot::dragEnterEvent(QDragEnterEvent *e)
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{
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QWidget::dragEnterEvent(e);
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if (m_wmHelper->hasComposite())
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emit entered(m_wid);
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}
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void AppSnapshot::fetchSnapshot()
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{
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if (!m_wmHelper->hasComposite())
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return;
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QImage qimage;
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SHMInfo *info = nullptr;
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uchar *image_data = nullptr;
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XImage *ximage = nullptr;
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// wayland环境下，使用KWin提供的接口
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if (isKWinAvailable() && Utils::IS_WAYLAND_DISPLAY) {
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QDBusInterface interface(QStringLiteral("org.kde.KWin"), QStringLiteral("/Screenshot"), QStringLiteral("org.kde.kwin.Screenshot"));
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qDebug() << "windowsID:"<< m_wid;
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QList<QVariant> args;
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args << QVariant::fromValue(m_wid);
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args << QVariant::fromValue(quint32(SNAP_WIDTH));
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args << QVariant::fromValue(quint32(SNAP_HEIGHT));
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QDBusReply<QString> reply = interface.callWithArgumentList(QDBus::Block,QStringLiteral("screenshotForWindowExtend"), args);
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if(reply.isValid()){
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m_snapshot.load(reply.value());
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qDebug() << "reply: "<<reply.value();
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} else {
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qDebug() << "get current workspace bckground error: "<< reply.error().message();
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}
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m_snapshotSrcRect = m_snapshot.rect();
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} else {
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do {
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// get window image from shm(only for deepin app)
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info = getImageDSHM();
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if (info) {
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qDebug() << "get Image from dxcbplugin SHM...";
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image_data = (uchar *)shmat(info->shmid, 0, 0);
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if ((qint64)image_data != -1) {
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m_snapshot = QImage(image_data, info->width, info->height, info->bytesPerLine, (QImage::Format)info->format);
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m_snapshotSrcRect = QRect(info->rect.x, info->rect.y, info->rect.width, info->rect.height);
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break;
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}
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qDebug() << "invalid pointer of shm!";
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image_data = nullptr;
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}
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if (!image_data || qimage.isNull()) {
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// get window image from XGetImage(a little slow)
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qDebug() << "get Image from dxcbplugin SHM failed!";
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qDebug() << "get Image from Xlib...";
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ximage = getImageXlib();
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if (!ximage) {
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qDebug() << "get Image from Xlib failed! giving up...";
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emit requestCheckWindow();
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return;
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}
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qimage = QImage((const uchar *)(ximage->data), ximage->width, ximage->height, ximage->bytes_per_line, QImage::Format_RGB32);
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}
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Q_ASSERT(!qimage.isNull());
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// remove shadow frame
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m_snapshotSrcRect = rectRemovedShadow(qimage, nullptr);
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m_snapshot = qimage;
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} while (false);
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}
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QSizeF size(rect().marginsRemoved(QMargins(8, 8, 8, 8)).size());
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const auto ratio = devicePixelRatioF();
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size = m_snapshotSrcRect.size().scaled(size * ratio, Qt::KeepAspectRatio);
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qreal scale = qreal(size.width()) / m_snapshotSrcRect.width();
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m_snapshot = m_snapshot.scaled(qRound(m_snapshot.width() * scale), qRound(m_snapshot.height() * scale),
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Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
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m_snapshotSrcRect.moveTop(m_snapshotSrcRect.top() * scale + 0.5);
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m_snapshotSrcRect.moveLeft(m_snapshotSrcRect.left() * scale + 0.5);
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m_snapshotSrcRect.setWidth(size.width() - 0.5);
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m_snapshotSrcRect.setHeight(size.height() - 0.5);
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if (image_data) shmdt(image_data);
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if (ximage) XDestroyImage(ximage);
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if (info) XFree(info);
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update();
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}
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void AppSnapshot::enterEvent(QEvent *e)
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{
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QWidget::enterEvent(e);
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if (!m_wmHelper->hasComposite()) {
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m_closeBtn2D->move(width() - m_closeBtn2D->width() - SNAP_CLOSE_BTN_MARGIN, (height() - m_closeBtn2D->height()) / 2);
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m_closeBtn2D->setVisible(true);
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} else {
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emit entered(wid());
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}
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update();
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}
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void AppSnapshot::leaveEvent(QEvent *e)
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{
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QWidget::leaveEvent(e);
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m_closeBtn2D->setVisible(false);
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update();
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}
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void AppSnapshot::paintEvent(QPaintEvent *e)
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{
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QPainter painter(this);
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if (!m_wmHelper->hasComposite()) {
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if (underMouse())
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painter.fillRect(rect(), QColor(255, 255, 255, 255 * .2));
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return;
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}
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if (m_snapshot.isNull())
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return;
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const auto ratio = devicePixelRatioF();
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// draw attention background
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if (m_windowInfo.attention) {
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painter.setBrush(QColor(241, 138, 46, 255 * .8));
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painter.setPen(Qt::NoPen);
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painter.drawRoundedRect(rect(), 5, 5);
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}
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// draw image
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const QImage &im = m_snapshot;
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const qreal offset_x = width() / 2.0 - m_snapshotSrcRect.width() / ratio / 2 - m_snapshotSrcRect.left() / ratio;
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const qreal offset_y = height() / 2.0 - m_snapshotSrcRect.height() / ratio / 2 - m_snapshotSrcRect.top() / ratio;
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DStyleHelper dstyle(style());
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const int radius = dstyle.pixelMetric(DStyle::PM_FrameRadius);
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QBrush brush;
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brush.setTextureImage(im);
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painter.setBrush(brush);
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painter.setPen(Qt::NoPen);
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painter.scale(1 / ratio, 1 / ratio);
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painter.translate(QPoint(offset_x * ratio, offset_y * ratio));
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painter.drawRoundedRect(m_snapshotSrcRect, radius * ratio, radius * ratio);
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}
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void AppSnapshot::resizeEvent(QResizeEvent *e)
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{
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QWidget::resizeEvent(e);
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QTimer::singleShot(1, this, &AppSnapshot::fetchSnapshot);
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}
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void AppSnapshot::mousePressEvent(QMouseEvent *e)
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{
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QWidget::mousePressEvent(e);
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emit clicked(m_wid);
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}
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bool AppSnapshot::eventFilter(QObject *watched, QEvent *e)
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{
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if (watched == m_closeBtn2D) {
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// TODO 判断条件重复
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if (watched == m_closeBtn2D && (e->type() == QEvent::HoverEnter || e->type() == QEvent::HoverMove)) {
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m_closeBtn2D->setIcon(QIcon(":/icons/resources/close_round_hover.svg"));
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} else if (watched == m_closeBtn2D && e->type() == QEvent::HoverLeave) {
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m_closeBtn2D->setIcon(QIcon(":/icons/resources/close_round_normal.svg"));
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} else if (watched == m_closeBtn2D && e->type() == QEvent::MouseButtonPress) {
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m_closeBtn2D->setIcon(QIcon(":/icons/resources/close_round_press.svg"));
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}
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}
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return false;
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}
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SHMInfo *AppSnapshot::getImageDSHM()
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{
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const auto display = Utils::IS_WAYLAND_DISPLAY ? XOpenDisplay(nullptr) : QX11Info::display();
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if (!display) {
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qWarning() << "Error: get display failed!";
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return nullptr;
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}
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Atom atom_prop = XInternAtom(display, "_DEEPIN_DXCB_SHM_INFO", true);
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if (!atom_prop) {
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return nullptr;
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}
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Atom actual_type_return_deepin_shm;
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int actual_format_return_deepin_shm;
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unsigned long nitems_return_deepin_shm;
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unsigned long bytes_after_return_deepin_shm;
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unsigned char *prop_return_deepin_shm;
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XGetWindowProperty(display, m_wid, atom_prop, 0, 32 * 9, false, AnyPropertyType,
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&actual_type_return_deepin_shm, &actual_format_return_deepin_shm, &nitems_return_deepin_shm,
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&bytes_after_return_deepin_shm, &prop_return_deepin_shm);
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//qDebug() << actual_type_return_deepin_shm << actual_format_return_deepin_shm << nitems_return_deepin_shm << bytes_after_return_deepin_shm << prop_return_deepin_shm;
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return reinterpret_cast<SHMInfo *>(prop_return_deepin_shm);
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}
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XImage *AppSnapshot::getImageXlib()
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{
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const auto display = Utils::IS_WAYLAND_DISPLAY ? XOpenDisplay(nullptr) : QX11Info::display();
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if (!display) {
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qWarning() << "Error: get display failed!";
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return nullptr;
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}
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Window unused_window;
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int unused_int;
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unsigned unused_uint, w, h;
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XGetGeometry(display, m_wid, &unused_window, &unused_int, &unused_int, &w, &h, &unused_uint, &unused_uint);
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return XGetImage(display, m_wid, 0, 0, w, h, AllPlanes, ZPixmap);
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}
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QRect AppSnapshot::rectRemovedShadow(const QImage &qimage, unsigned char *prop_to_return_gtk)
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{
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const auto display = Utils::IS_WAYLAND_DISPLAY ? XOpenDisplay(nullptr) : QX11Info::display();
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if (!display) {
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qWarning() << "Error: get display failed!";
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return QRect();
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}
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const Atom gtk_frame_extents = XInternAtom(display, "_GTK_FRAME_EXTENTS", true);
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Atom actual_type_return_gtk;
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int actual_format_return_gtk;
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unsigned long n_items_return_gtk;
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unsigned long bytes_after_return_gtk;
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const auto r = XGetWindowProperty(display, m_wid, gtk_frame_extents, 0, 4, false, XA_CARDINAL,
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&actual_type_return_gtk, &actual_format_return_gtk, &n_items_return_gtk, &bytes_after_return_gtk, &prop_to_return_gtk);
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if (!r && prop_to_return_gtk && n_items_return_gtk == 4 && actual_format_return_gtk == 32) {
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qDebug() << "remove shadow frame...";
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const unsigned long *extents = reinterpret_cast<const unsigned long *>(prop_to_return_gtk);
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const int left = extents[0];
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const int right = extents[1];
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const int top = extents[2];
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const int bottom = extents[3];
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const int width = qimage.width();
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const int height = qimage.height();
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return QRect(left, top, width - left - right, height - top - bottom);
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} else {
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return QRect(0, 0, qimage.width(), qimage.height());
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}
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}
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void AppSnapshot::getWindowState()
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{
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Atom actual_type;
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||
int actual_format;
|
||
unsigned long i, num_items, bytes_after;
|
||
unsigned char *properties = nullptr;
|
||
|
||
m_isWidowHidden = false;
|
||
|
||
const auto display = Utils::IS_WAYLAND_DISPLAY ? XOpenDisplay(nullptr) : QX11Info::display();
|
||
if (!display) {
|
||
qWarning() << "Error: get display failed!";
|
||
return;
|
||
}
|
||
Atom atom_prop = XInternAtom(display, "_NET_WM_STATE", true);
|
||
if (!atom_prop) {
|
||
return;
|
||
}
|
||
|
||
Status status = XGetWindowProperty(display, m_wid, atom_prop, 0, LONG_MAX, False, AnyPropertyType, &actual_type, &actual_format, &num_items, &bytes_after, &properties);
|
||
if (status != Success) {
|
||
qDebug() << "Fail to get window state";
|
||
return;
|
||
}
|
||
|
||
Atom *atoms = reinterpret_cast<Atom *>(properties);
|
||
for (i = 0; i < num_items; ++i) {
|
||
const char *atomName = XGetAtomName(display, atoms[i]);
|
||
|
||
if (strcmp(atomName, "_NET_WM_STATE_HIDDEN") == 0) {
|
||
m_isWidowHidden = true;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (properties) {
|
||
XFree(properties);
|
||
}
|
||
}
|
||
|
||
bool AppSnapshot::isKWinAvailable()
|
||
{
|
||
if (QDBusConnection::sessionBus().interface()->isServiceRegistered(QStringLiteral("org.kde.KWin"))) {
|
||
QDBusInterface interface(QStringLiteral("org.kde.KWin"), QStringLiteral("/Effects"), QStringLiteral("org.kde.kwin.Effects"));
|
||
QDBusReply<bool> reply = interface.call(QStringLiteral("isEffectLoaded"), "screenshot");
|
||
|
||
return reply.value();
|
||
}
|
||
return false;
|
||
}
|