765 lines
24 KiB
C++
765 lines
24 KiB
C++
/*
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* Copyright 2013 by 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 Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) 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 Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "windowthumbnail.h"
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// KF5
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#include <kwindowsystem.h>
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// Qt
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#include <QGuiApplication>
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#include <QIcon>
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#include <QOpenGLContext>
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#include <QQuickWindow>
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#include <QRunnable>
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// X11
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#if HAVE_XCB_COMPOSITE
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#include <QX11Info>
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#include <xcb/composite.h>
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#if HAVE_GLX
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#include <GL/glx.h>
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typedef void (*glXBindTexImageEXT_func)(Display *dpy, GLXDrawable drawable,
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int buffer, const int *attrib_list);
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typedef void (*glXReleaseTexImageEXT_func)(Display *dpy, GLXDrawable drawable, int buffer);
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#endif
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#if HAVE_EGL
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typedef EGLImageKHR(*eglCreateImageKHR_func)(EGLDisplay, EGLContext, EGLenum, EGLClientBuffer, const EGLint *);
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typedef EGLBoolean(*eglDestroyImageKHR_func)(EGLDisplay, EGLImageKHR);
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typedef GLvoid(*glEGLImageTargetTexture2DOES_func)(GLenum, GLeglImageOES);
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#endif // HAVE_EGL
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#endif
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namespace Plasma
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{
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#if HAVE_XCB_COMPOSITE
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#if HAVE_GLX
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class DiscardGlxPixmapRunnable : public QRunnable {
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public:
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DiscardGlxPixmapRunnable(
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uint,
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QFunctionPointer,
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xcb_pixmap_t
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);
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void run() Q_DECL_OVERRIDE;
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private:
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uint m_texture;
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QFunctionPointer m_releaseTexImage;
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xcb_pixmap_t m_glxPixmap;
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};
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DiscardGlxPixmapRunnable::DiscardGlxPixmapRunnable(uint texture, QFunctionPointer deleteFunction, xcb_pixmap_t pixmap)
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: QRunnable(),
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m_texture(texture),
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m_releaseTexImage(deleteFunction),
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m_glxPixmap(pixmap)
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{}
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void DiscardGlxPixmapRunnable::run()
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{
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if (m_glxPixmap != XCB_PIXMAP_NONE) {
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Display *d = QX11Info::display();
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((glXReleaseTexImageEXT_func)(m_releaseTexImage))(d, m_glxPixmap, GLX_FRONT_LEFT_EXT);
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glXDestroyPixmap(d, m_glxPixmap);
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glDeleteTextures(1, &m_texture);
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}
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}
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#endif //HAVE_GLX
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#if HAVE_EGL
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class DiscardEglPixmapRunnable : public QRunnable {
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public:
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DiscardEglPixmapRunnable(
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uint,
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QFunctionPointer,
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EGLImageKHR
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);
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void run() Q_DECL_OVERRIDE;
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private:
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uint m_texture;
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QFunctionPointer m_eglDestroyImageKHR;
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EGLImageKHR m_image;
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};
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DiscardEglPixmapRunnable::DiscardEglPixmapRunnable(uint texture, QFunctionPointer deleteFunction, EGLImageKHR image)
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: QRunnable(),
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m_texture(texture),
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m_eglDestroyImageKHR(deleteFunction),
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m_image(image)
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{}
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void DiscardEglPixmapRunnable::run()
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{
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if (m_image != EGL_NO_IMAGE_KHR) {
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((eglDestroyImageKHR_func)(m_eglDestroyImageKHR))(eglGetCurrentDisplay(), m_image);
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glDeleteTextures(1, &m_texture);
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}
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}
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#endif//HAVE_EGL
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#endif //HAVE_XCB_COMPOSITE
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WindowTextureNode::WindowTextureNode()
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: QSGSimpleTextureNode()
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{
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}
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WindowTextureNode::~WindowTextureNode()
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{
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}
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void WindowTextureNode::reset(QSGTexture *texture)
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{
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setTexture(texture);
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m_texture.reset(texture);
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}
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WindowThumbnail::WindowThumbnail(QQuickItem *parent)
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: QQuickItem(parent)
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, QAbstractNativeEventFilter()
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, m_xcb(false)
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, m_composite(false)
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, m_winId(0)
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, m_paintedSize(QSizeF())
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, m_thumbnailAvailable(false)
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, m_damaged(false)
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, m_depth(0)
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#if HAVE_XCB_COMPOSITE
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, m_openGLFunctionsResolved(false)
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, m_damageEventBase(0)
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, m_damage(XCB_NONE)
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, m_pixmap(XCB_PIXMAP_NONE)
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, m_texture(0)
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#if HAVE_GLX
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, m_glxPixmap(XCB_PIXMAP_NONE)
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, m_bindTexImage(nullptr)
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, m_releaseTexImage(nullptr)
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#endif // HAVE_GLX
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#if HAVE_EGL
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, m_eglFunctionsResolved(false)
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, m_image(EGL_NO_IMAGE_KHR)
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, m_eglCreateImageKHR(nullptr)
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, m_eglDestroyImageKHR(nullptr)
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, m_glEGLImageTargetTexture2DOES(nullptr)
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#endif // HAVE_EGL
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#endif
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{
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setFlag(ItemHasContents);
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connect(this, &QQuickItem::windowChanged, [this](QQuickWindow * window) {
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if (!window) {
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return;
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}
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// restart the redirection, it might not have been active yet
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stopRedirecting();
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startRedirecting();
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update();
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});
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connect(this, &QQuickItem::enabledChanged, [this]() {
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if (!isEnabled()) {
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stopRedirecting();
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releaseResources();
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} else if (isVisible()) {
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startRedirecting();
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update();
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}
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});
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connect(this, &QQuickItem::visibleChanged, [this]() {
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if (!isVisible()) {
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stopRedirecting();
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releaseResources();
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} else if (isEnabled()) {
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startRedirecting();
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update();
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}
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});
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if (QGuiApplication *gui = dynamic_cast<QGuiApplication *>(QCoreApplication::instance())) {
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m_xcb = (gui->platformName() == QStringLiteral("xcb"));
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if (m_xcb) {
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gui->installNativeEventFilter(this);
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#if HAVE_XCB_COMPOSITE
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xcb_connection_t *c = QX11Info::connection();
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xcb_prefetch_extension_data(c, &xcb_composite_id);
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const auto *compositeReply = xcb_get_extension_data(c, &xcb_composite_id);
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m_composite = (compositeReply && compositeReply->present);
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xcb_prefetch_extension_data(c, &xcb_damage_id);
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const auto *reply = xcb_get_extension_data(c, &xcb_damage_id);
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m_damageEventBase = reply->first_event;
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if (reply->present) {
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xcb_damage_query_version_unchecked(c, XCB_DAMAGE_MAJOR_VERSION, XCB_DAMAGE_MINOR_VERSION);
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}
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#endif
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}
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}
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}
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WindowThumbnail::~WindowThumbnail()
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{
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if (m_xcb) {
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QCoreApplication::instance()->removeNativeEventFilter(this);
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stopRedirecting();
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}
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}
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void WindowThumbnail::releaseResources()
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{
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#if HAVE_XCB_COMPOSITE
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#if HAVE_GLX && HAVE_EGL
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//only one (or none) should be set, but never both
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Q_ASSERT(m_glxPixmap == XCB_PIXMAP_NONE || m_image == EGL_NO_IMAGE_KHR);
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#endif
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#if HAVE_GLX || HAVE_EGL
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// NoStage is supported since Qt >= 5.6.x
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#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
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QQuickWindow::RenderStage m_renderStage = QQuickWindow::NoStage;
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#else
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QQuickWindow::RenderStage m_renderStage = QQuickWindow::BeforeSynchronizingStage;
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#endif
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#endif
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//data is deleted in the render thread (with relevant GLX calls)
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//note runnable may be called *after* this is deleted
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//but the pointer is held by the WindowThumbnail which is in the main thread
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#if HAVE_GLX
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if (m_glxPixmap != XCB_PIXMAP_NONE) {
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window()->scheduleRenderJob(new DiscardGlxPixmapRunnable(m_texture,
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m_releaseTexImage,
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m_glxPixmap),
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m_renderStage);
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m_glxPixmap = XCB_PIXMAP_NONE;
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m_texture = 0;
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}
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#endif
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#if HAVE_EGL
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if (m_image != EGL_NO_IMAGE_KHR) {
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window()->scheduleRenderJob(new DiscardEglPixmapRunnable(m_texture,
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m_eglDestroyImageKHR,
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m_image),
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m_renderStage);
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m_image = EGL_NO_IMAGE_KHR;
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m_texture = 0;
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}
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#endif
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#endif
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}
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uint32_t WindowThumbnail::winId() const
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{
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return m_winId;
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}
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void WindowThumbnail::setWinId(uint32_t winId)
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{
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if (m_winId == winId) {
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return;
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}
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if (!KWindowSystem::self()->hasWId(winId)) {
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// invalid Id, don't updated
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return;
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}
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if (window() && winId == window()->winId()) {
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// don't redirect to yourself
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return;
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}
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stopRedirecting();
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m_winId = winId;
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if (isEnabled() && isVisible()) {
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startRedirecting();
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}
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emit winIdChanged();
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}
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qreal WindowThumbnail::paintedWidth() const
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{
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return m_paintedSize.width();
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}
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qreal WindowThumbnail::paintedHeight() const
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{
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return m_paintedSize.height();
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}
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bool WindowThumbnail::thumbnailAvailable() const
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{
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return m_thumbnailAvailable;
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}
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QSGNode *WindowThumbnail::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *updatePaintNodeData)
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{
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Q_UNUSED(updatePaintNodeData)
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auto *node = static_cast<WindowTextureNode *>(oldNode);
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if (!node) {
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node = new WindowTextureNode();
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node->setFiltering(QSGTexture::Linear);
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}
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if (!m_xcb || m_winId == 0 || (window() && window()->winId() == m_winId)) {
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iconToTexture(node);
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} else {
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windowToTexture(node);
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}
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node->setRect(boundingRect());
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const QSizeF size(node->texture()->textureSize().scaled(boundingRect().size().toSize(), Qt::KeepAspectRatio));
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if (size != m_paintedSize) {
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m_paintedSize = size;
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emit paintedSizeChanged();
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}
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const qreal x = boundingRect().x() + (boundingRect().width() - size.width()) / 2;
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const qreal y = boundingRect().y() + (boundingRect().height() - size.height()) / 2;
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node->setRect(QRectF(QPointF(x, y), size));
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return node;
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}
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bool WindowThumbnail::nativeEventFilter(const QByteArray &eventType, void *message, long int *result)
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{
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Q_UNUSED(result)
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if (!m_xcb || !m_composite || eventType != QByteArrayLiteral("xcb_generic_event_t")) {
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// currently we are only interested in XCB events
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return false;
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}
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#if HAVE_XCB_COMPOSITE
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xcb_generic_event_t *event = static_cast<xcb_generic_event_t *>(message);
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const uint8_t responseType = event->response_type & ~0x80;
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if (responseType == m_damageEventBase + XCB_DAMAGE_NOTIFY) {
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if (reinterpret_cast<xcb_damage_notify_event_t *>(event)->drawable == m_winId) {
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m_damaged = true;
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update();
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}
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} else if (responseType == XCB_CONFIGURE_NOTIFY) {
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if (reinterpret_cast<xcb_configure_notify_event_t *>(event)->window == m_winId) {
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releaseResources();
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m_damaged = true;
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update();
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}
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} else if (responseType == XCB_MAP_NOTIFY) {
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if (reinterpret_cast<xcb_configure_notify_event_t *>(event)->window == m_winId) {
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releaseResources();
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m_damaged = true;
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update();
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}
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}
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#else
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Q_UNUSED(message)
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#endif
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// do not filter out any events, there might be further WindowThumbnails for the same window
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return false;
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}
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void WindowThumbnail::iconToTexture(WindowTextureNode *textureNode)
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{
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QIcon icon;
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if (KWindowSystem::self()->hasWId(m_winId)) {
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icon = KWindowSystem::self()->icon(m_winId, boundingRect().width(), boundingRect().height());
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} else {
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// fallback to plasma icon
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icon = QIcon::fromTheme(QStringLiteral("plasma"));
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}
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QImage image = icon.pixmap(boundingRect().size().toSize()).toImage();
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textureNode->reset(window()->createTextureFromImage(image));
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}
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#if HAVE_XCB_COMPOSITE
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#if HAVE_GLX
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bool WindowThumbnail::windowToTextureGLX(WindowTextureNode *textureNode)
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{
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if (glXGetCurrentContext()) {
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if (!m_openGLFunctionsResolved) {
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resolveGLXFunctions();
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}
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if (!m_bindTexImage || !m_releaseTexImage) {
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return false;
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}
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if (m_glxPixmap == XCB_PIXMAP_NONE) {
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xcb_connection_t *c = QX11Info::connection();
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auto geometryCookie = xcb_get_geometry_unchecked(c, m_pixmap);
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QScopedPointer<xcb_get_geometry_reply_t, QScopedPointerPodDeleter> geo(xcb_get_geometry_reply(c, geometryCookie, nullptr));
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if (geo.isNull()) {
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return false;
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}
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m_depth = geo->depth;
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if (!loadGLXTexture()) {
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return false;
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}
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textureNode->reset(window()->createTextureFromId(m_texture, QSize(geo->width, geo->height)));
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}
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textureNode->texture()->bind();
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bindGLXTexture();
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return true;
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}
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return false;
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}
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#endif // HAVE_GLX
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#if HAVE_EGL
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bool WindowThumbnail::xcbWindowToTextureEGL(WindowTextureNode *textureNode)
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{
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EGLContext context = eglGetCurrentContext();
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if (context != EGL_NO_CONTEXT) {
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if (!m_eglFunctionsResolved) {
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resolveEGLFunctions();
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}
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if (QByteArray((char *)glGetString(GL_RENDERER)).contains("llvmpipe")) {
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return false;
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}
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if (!m_eglCreateImageKHR || !m_eglDestroyImageKHR || !m_glEGLImageTargetTexture2DOES) {
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return false;
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}
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if (m_image == EGL_NO_IMAGE_KHR) {
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xcb_connection_t *c = QX11Info::connection();
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auto geometryCookie = xcb_get_geometry_unchecked(c, m_pixmap);
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const EGLint attribs[] = {
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EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
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EGL_NONE
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};
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m_image = ((eglCreateImageKHR_func)(m_eglCreateImageKHR))(eglGetCurrentDisplay(), EGL_NO_CONTEXT,
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EGL_NATIVE_PIXMAP_KHR,
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(EGLClientBuffer)m_pixmap, attribs);
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if (m_image == EGL_NO_IMAGE_KHR) {
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qDebug() << "failed to create egl image";
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return false;
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}
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glGenTextures(1, &m_texture);
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QScopedPointer<xcb_get_geometry_reply_t, QScopedPointerPodDeleter> geo(xcb_get_geometry_reply(c, geometryCookie, nullptr));
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QSize size;
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if (!geo.isNull()) {
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size.setWidth(geo->width);
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size.setHeight(geo->height);
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}
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textureNode->reset(window()->createTextureFromId(m_texture, size));
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}
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textureNode->texture()->bind();
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bindEGLTexture();
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return true;
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}
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return false;
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}
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void WindowThumbnail::resolveEGLFunctions()
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{
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EGLDisplay display = eglGetCurrentDisplay();
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if (display == EGL_NO_DISPLAY) {
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return;
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}
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auto *context = window()->openglContext();
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QList<QByteArray> extensions = QByteArray(eglQueryString(display, EGL_EXTENSIONS)).split(' ');
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if (extensions.contains(QByteArrayLiteral("EGL_KHR_image")) ||
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(extensions.contains(QByteArrayLiteral("EGL_KHR_image_base")) &&
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extensions.contains(QByteArrayLiteral("EGL_KHR_image_pixmap")))) {
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if (context->hasExtension(QByteArrayLiteral("GL_OES_EGL_image"))) {
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qDebug() << "Have EGL texture from pixmap";
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m_eglCreateImageKHR = context->getProcAddress(QByteArrayLiteral("eglCreateImageKHR"));
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m_eglDestroyImageKHR = context->getProcAddress(QByteArrayLiteral("eglDestroyImageKHR"));
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m_glEGLImageTargetTexture2DOES = context->getProcAddress(QByteArrayLiteral("glEGLImageTargetTexture2DOES"));
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}
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}
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m_eglFunctionsResolved = true;
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}
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void WindowThumbnail::bindEGLTexture()
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{
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((glEGLImageTargetTexture2DOES_func)(m_glEGLImageTargetTexture2DOES))(GL_TEXTURE_2D, (GLeglImageOES)m_image);
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resetDamaged();
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}
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#endif // HAVE_EGL
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#endif // HAVE_XCB_COMPOSITE
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void WindowThumbnail::windowToTexture(WindowTextureNode *textureNode)
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{
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if (!m_damaged && textureNode->texture()) {
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return;
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}
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#if HAVE_XCB_COMPOSITE
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if (!textureNode->texture()) {
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// the texture got discarded by the scene graph, but our mapping is still valid
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// let's discard the pixmap to have a clean state again
|
|
releaseResources();
|
|
}
|
|
if (m_pixmap == XCB_PIXMAP_NONE) {
|
|
m_pixmap = pixmapForWindow();
|
|
}
|
|
if (m_pixmap == XCB_PIXMAP_NONE) {
|
|
// create above failed
|
|
iconToTexture(textureNode);
|
|
setThumbnailAvailable(false);
|
|
return;
|
|
}
|
|
bool fallbackToIcon = true;
|
|
#if HAVE_GLX
|
|
fallbackToIcon = !windowToTextureGLX(textureNode);
|
|
#endif // HAVE_GLX
|
|
#if HAVE_EGL
|
|
if (fallbackToIcon) {
|
|
// if glx succeeded fallbackToIcon is false, thus we shouldn't try egl
|
|
fallbackToIcon = !xcbWindowToTextureEGL(textureNode);
|
|
}
|
|
#endif // HAVE_EGL
|
|
if (fallbackToIcon) {
|
|
// just for safety to not crash
|
|
iconToTexture(textureNode);
|
|
}
|
|
setThumbnailAvailable(!fallbackToIcon);
|
|
textureNode->markDirty(QSGNode::DirtyForceUpdate);
|
|
#else
|
|
iconToTexture(textureNode);
|
|
#endif
|
|
}
|
|
|
|
#if HAVE_XCB_COMPOSITE
|
|
xcb_pixmap_t WindowThumbnail::pixmapForWindow()
|
|
{
|
|
if (!m_composite) {
|
|
return XCB_PIXMAP_NONE;
|
|
}
|
|
|
|
xcb_connection_t *c = QX11Info::connection();
|
|
xcb_pixmap_t pix = xcb_generate_id(c);
|
|
auto cookie = xcb_composite_name_window_pixmap_checked(c, m_winId, pix);
|
|
QScopedPointer<xcb_generic_error_t, QScopedPointerPodDeleter> error(xcb_request_check(c, cookie));
|
|
if (error) {
|
|
return XCB_PIXMAP_NONE;
|
|
}
|
|
return pix;
|
|
}
|
|
|
|
#if HAVE_GLX
|
|
void WindowThumbnail::resolveGLXFunctions()
|
|
{
|
|
auto *context = window()->openglContext();
|
|
QList<QByteArray> extensions = QByteArray(glXQueryExtensionsString(QX11Info::display(), QX11Info::appScreen())).split(' ');
|
|
if (extensions.contains(QByteArrayLiteral("GLX_EXT_texture_from_pixmap"))) {
|
|
m_bindTexImage = context->getProcAddress(QByteArrayLiteral("glXBindTexImageEXT"));
|
|
m_releaseTexImage = context->getProcAddress(QByteArrayLiteral("glXReleaseTexImageEXT"));
|
|
} else
|
|
qWarning() << "couldn't resolve GLX_EXT_texture_from_pixmap functions";
|
|
m_openGLFunctionsResolved = true;
|
|
}
|
|
|
|
void WindowThumbnail::bindGLXTexture()
|
|
{
|
|
Display *d = QX11Info::display();
|
|
((glXReleaseTexImageEXT_func)(m_releaseTexImage))(d, m_glxPixmap, GLX_FRONT_LEFT_EXT);
|
|
((glXBindTexImageEXT_func)(m_bindTexImage))(d, m_glxPixmap, GLX_FRONT_LEFT_EXT, NULL);
|
|
resetDamaged();
|
|
}
|
|
|
|
GLXFBConfig *getConfig(int depth, int *index)
|
|
{
|
|
const int attribs[] = {
|
|
GLX_RENDER_TYPE, GLX_RGBA_BIT,
|
|
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT | GLX_PIXMAP_BIT,
|
|
GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR,
|
|
GLX_X_RENDERABLE, 1,
|
|
GLX_CONFIG_CAVEAT, int(GLX_DONT_CARE),
|
|
GLX_RED_SIZE, 5,
|
|
GLX_GREEN_SIZE, 5,
|
|
GLX_BLUE_SIZE, 5,
|
|
GLX_ALPHA_SIZE, 0,
|
|
GLX_STENCIL_SIZE, 0,
|
|
GLX_DEPTH_SIZE, 0, // note: this is depth buffer and has nothing to do with the X depth
|
|
GLX_BIND_TO_TEXTURE_RGB_EXT, (depth == 32) ? int(GLX_DONT_CARE) : 1,
|
|
GLX_BIND_TO_TEXTURE_RGBA_EXT, (depth == 32) ? 1 : int(GLX_DONT_CARE),
|
|
0
|
|
};
|
|
|
|
if (QByteArray((char *)glGetString(GL_RENDERER)).contains("llvmpipe")) {
|
|
return nullptr;
|
|
}
|
|
|
|
int count = 0;
|
|
GLXFBConfig *fbConfigs = glXChooseFBConfig(QX11Info::display(), QX11Info::appScreen(), attribs, &count);
|
|
if (count < 1) {
|
|
return nullptr;
|
|
}
|
|
|
|
for (int i = 0; i < count; ++i) {
|
|
int alphaSize = 0;
|
|
int bufferSize = 0;
|
|
glXGetFBConfigAttrib(QX11Info::display(), fbConfigs[i], GLX_BUFFER_SIZE, &bufferSize);
|
|
glXGetFBConfigAttrib(QX11Info::display(), fbConfigs[i], GLX_ALPHA_SIZE, &alphaSize);
|
|
if (bufferSize != depth && (bufferSize - alphaSize) != depth) {
|
|
continue;
|
|
}
|
|
XVisualInfo *vi = glXGetVisualFromFBConfig(QX11Info::display(), fbConfigs[i]);
|
|
if (!vi) {
|
|
// no visual for the fb config - skip
|
|
continue;
|
|
}
|
|
const int visualDepth = vi->depth;
|
|
XFree(vi);
|
|
|
|
if (visualDepth != depth) {
|
|
// depth of the visual doesn't match our wanted depth - skip
|
|
continue;
|
|
}
|
|
*index = i;
|
|
break;
|
|
}
|
|
|
|
return fbConfigs;
|
|
}
|
|
|
|
bool WindowThumbnail::loadGLXTexture()
|
|
{
|
|
GLXContext glxContext = glXGetCurrentContext();
|
|
if (!glxContext) {
|
|
return false;
|
|
}
|
|
|
|
// this is a cache of the GLXFBConfig per depth
|
|
// it's kept as a method static to have it shared between multiple
|
|
// window thumbnails.
|
|
// As the GLXFBConfig might be context specific and we cannot be sure
|
|
// that the code might be entered from different contexts, the cache
|
|
// also maps the cached configs against the context.
|
|
static QHash<GLXContext, QMap<int, GLXFBConfig> > s_fbConfigs;
|
|
auto it = s_fbConfigs.find(glxContext);
|
|
if (it == s_fbConfigs.end()) {
|
|
// create a map entry for the current context
|
|
s_fbConfigs.insert(glxContext, QMap<int, GLXFBConfig>());
|
|
it = s_fbConfigs.find(glxContext);
|
|
if (it == s_fbConfigs.end()) {
|
|
// just for safety, should never ever happen
|
|
return false;
|
|
}
|
|
}
|
|
auto &configMap = it.value();
|
|
auto configIt = configMap.constFind(m_depth);
|
|
if (configIt == configMap.constEnd()) {
|
|
// try getting a new fbconfig for the current depth
|
|
int index = 0;
|
|
GLXFBConfig *fbConfigs = getConfig(m_depth, &index);
|
|
if (!fbConfigs) {
|
|
return false;
|
|
}
|
|
configMap.insert(m_depth, fbConfigs[index]);
|
|
XFree(fbConfigs);
|
|
|
|
configIt = configMap.constFind(m_depth);
|
|
if (configIt == configMap.constEnd()) {
|
|
// just for safety, should never ever happen
|
|
return false;
|
|
}
|
|
}
|
|
|
|
glGenTextures(1, &m_texture);
|
|
|
|
// we assume that Texture_2D is supported as we have a QtQuick OpenGL context
|
|
int attrs[] = {
|
|
GLX_TEXTURE_FORMAT_EXT, (m_depth == 32) ? GLX_TEXTURE_FORMAT_RGBA_EXT : GLX_TEXTURE_FORMAT_RGB_EXT,
|
|
GLX_MIPMAP_TEXTURE_EXT, false,
|
|
GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT, XCB_NONE
|
|
};
|
|
m_glxPixmap = glXCreatePixmap(QX11Info::display(), configIt.value(), m_pixmap, attrs);
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
void WindowThumbnail::resetDamaged()
|
|
{
|
|
m_damaged = false;
|
|
#if HAVE_XCB_COMPOSITE
|
|
if (m_damage == XCB_NONE) {
|
|
return;
|
|
}
|
|
xcb_damage_subtract(QX11Info::connection(), m_damage, XCB_NONE, XCB_NONE);
|
|
#endif
|
|
}
|
|
|
|
void WindowThumbnail::stopRedirecting()
|
|
{
|
|
if (!m_xcb || !m_composite) {
|
|
return;
|
|
}
|
|
#if HAVE_XCB_COMPOSITE
|
|
xcb_connection_t *c = QX11Info::connection();
|
|
if (m_pixmap != XCB_PIXMAP_NONE) {
|
|
xcb_free_pixmap(c, m_pixmap);
|
|
m_pixmap = XCB_PIXMAP_NONE;
|
|
}
|
|
if (m_winId == XCB_WINDOW_NONE) {
|
|
return;
|
|
}
|
|
xcb_composite_unredirect_window(c, m_winId, XCB_COMPOSITE_REDIRECT_AUTOMATIC);
|
|
if (m_damage == XCB_NONE) {
|
|
return;
|
|
}
|
|
xcb_damage_destroy(c, m_damage);
|
|
m_damage = XCB_NONE;
|
|
#endif
|
|
}
|
|
|
|
void WindowThumbnail::startRedirecting()
|
|
{
|
|
if (!m_xcb || !m_composite || !window() || window()->winId() == m_winId) {
|
|
return;
|
|
}
|
|
#if HAVE_XCB_COMPOSITE
|
|
if (m_winId == XCB_WINDOW_NONE) {
|
|
return;
|
|
}
|
|
xcb_connection_t *c = QX11Info::connection();
|
|
|
|
// need to get the window attributes for the existing event mask
|
|
const auto attribsCookie = xcb_get_window_attributes_unchecked(c, m_winId);
|
|
|
|
// redirect the window
|
|
xcb_composite_redirect_window(c, m_winId, XCB_COMPOSITE_REDIRECT_AUTOMATIC);
|
|
|
|
// generate the damage handle
|
|
m_damage = xcb_generate_id(c);
|
|
xcb_damage_create(c, m_damage, m_winId, XCB_DAMAGE_REPORT_LEVEL_NON_EMPTY);
|
|
|
|
QScopedPointer<xcb_get_window_attributes_reply_t, QScopedPointerPodDeleter> attr(xcb_get_window_attributes_reply(c, attribsCookie, nullptr));
|
|
uint32_t events = XCB_EVENT_MASK_STRUCTURE_NOTIFY;
|
|
if (!attr.isNull()) {
|
|
events = events | attr->your_event_mask;
|
|
}
|
|
// the event mask will not be removed again. We cannot track whether another component also needs STRUCTURE_NOTIFY (e.g. KWindowSystem).
|
|
// if we would remove the event mask again, other areas will break.
|
|
xcb_change_window_attributes(c, m_winId, XCB_CW_EVENT_MASK, &events);
|
|
// force to update the texture
|
|
m_damaged = true;
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
void WindowThumbnail::setThumbnailAvailable(bool thumbnailAvailable)
|
|
{
|
|
if (m_thumbnailAvailable != thumbnailAvailable) {
|
|
m_thumbnailAvailable = thumbnailAvailable;
|
|
emit thumbnailAvailableChanged();
|
|
}
|
|
}
|
|
|
|
} // namespace
|