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121 lines
3.4 KiB
121 lines
3.4 KiB
/*****************************************************************************
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* Copyright (C) 2021 VLC authors and VideoLAN
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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 2 of the License, 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 General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef COMPOSITOR_X11_UTILS_HPP
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#define COMPOSITOR_X11_UTILS_HPP
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#include <memory>
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#include <QWidget>
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#include <xcb/xcb.h>
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#include <xcb/render.h>
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#include <xcb/composite.h>
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namespace vlc {
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class DummyNativeWidget : public QWidget
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{
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Q_OBJECT
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public:
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DummyNativeWidget(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
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virtual ~DummyNativeWidget();
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//override paintEnging to suppress warning
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QPaintEngine* paintEngine() const override;
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};
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template<typename T, typename R, R RELEASE>
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class X11Resource {
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public:
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X11Resource() = delete;
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explicit X11Resource(xcb_connection_t* conn, T _xid = 0)
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: m_conn(conn)
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, xid(_xid)
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{}
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X11Resource(const X11Resource &other) = delete;
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X11Resource(X11Resource &&other)
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: m_conn (other.m_conn)
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, xid (other.xid)
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{
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other.xid = 0;
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}
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~X11Resource()
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{
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if (!m_conn)
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return;
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if (xid)
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RELEASE(m_conn, xid);
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}
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void generateId() {
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reset(xcb_generate_id(m_conn));
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}
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X11Resource &operator=(const X11Resource &other) = delete;
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X11Resource &operator=(X11Resource &&other) noexcept
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{
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reset(other.xid);
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other.xid = 0;
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return *this;
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}
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X11Resource &operator=(T value) noexcept
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{
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reset(value);
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return *this;
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}
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void reset(T newval = 0) {
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if (xid)
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RELEASE(m_conn, xid);
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xid = newval;
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}
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operator bool() noexcept
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{
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return xid != 0;
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}
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T get() const { return xid; }
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xcb_connection_t* m_conn;
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T xid = 0;
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};
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using PixmapPtr = X11Resource<xcb_pixmap_t, decltype(&xcb_free_pixmap), xcb_free_pixmap>;
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using PicturePtr = X11Resource<xcb_render_picture_t, decltype(&xcb_render_free_picture), xcb_render_free_picture>;
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using WindowPtr = X11Resource<xcb_window_t, decltype(&xcb_destroy_window), xcb_destroy_window>;
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bool queryExtension(xcb_connection_t* conn, const char* name, uint8_t* first_event_out, uint8_t* first_error_out);
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bool findVisualFormat(xcb_connection_t* conn, xcb_visualid_t visual, xcb_render_pictformat_t* fmtOut, uint8_t* depthOut);
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xcb_atom_t getInternAtom(xcb_connection_t* conn, const char* atomName);
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void setTransparentForMouseEvent(xcb_connection_t* conn, xcb_window_t window);
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bool wmScreenHasCompositor(xcb_connection_t* conn, int screen);
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bool wmNetSupport(xcb_connection_t* conn, xcb_window_t rootWindow, xcb_atom_t atom);
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}
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#endif /* COMPOSITOR_X11_UTILS_HPP */
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