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Make X11_XCB a build dependency of X11 windowed backend

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Let's rather not build the plugin if we don't have the dependency
then building it without OpenGL support. Simplifies the code a bit
and makes the backend overall more useful and goes along with e.g.
the Wayland one which has EGL also as a hard dependency for the
plugin.

REVIEW: 124697
This commit is contained in:
Martin Gräßlin 2015-08-11 13:50:35 +02:00
parent 06aacf4f65
commit 5d946e3762
4 changed files with 5 additions and 19 deletions
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2
CMakeLists.txt
View file

@ -208,7 +208,7 @@ add_feature_info("XCB-ICCCM" XCB_ICCCM_FOUND "Required for building test applica
find_package(X11_XCB)
set_package_properties(X11_XCB PROPERTIES
PURPOSE "Required for OpenGL support in X11 windowed backend of kwin_wayland"
PURPOSE "Required for building X11 windowed backend of kwin_wayland"
TYPE OPTIONAL)
########### configure tests ###############

4
backends/CMakeLists.txt
View file

@ -6,4 +6,6 @@ if(HAVE_LIBHYBRIS)
add_subdirectory(hwcomposer)
endif()
add_subdirectory(wayland)
add_subdirectory(x11)
if(X11_XCB_FOUND)
add_subdirectory(x11)
endif()

5
backends/x11/CMakeLists.txt
View file

@ -6,10 +6,7 @@ set(X11BACKEND_SOURCES
)
add_library(KWinWaylandX11Backend MODULE ${X11BACKEND_SOURCES})
target_link_libraries(KWinWaylandX11Backend kwin)
if(X11_XCB_FOUND)
target_link_libraries(KWinWaylandX11Backend X11::XCB)
endif()
target_link_libraries(KWinWaylandX11Backend kwin X11::XCB)
install(
TARGETS

13
backends/x11/x11windowed_backend.cpp
View file

@ -23,9 +23,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "logging.h"
#include "wayland_server.h"
#include "xcbutils.h"
#if HAVE_X11_XCB
#include "eglonxbackend.h"
#endif
#include <kwinxrenderutils.h>
#include <QAbstractEventDispatcher>
#include <QCoreApplication>
@ -36,9 +34,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <KWayland/Server/surface_interface.h>
// system
#include <linux/input.h>
#if HAVE_X11_XCB
#include <X11/Xlib-xcb.h>
#endif
namespace KWin
{
@ -67,22 +63,16 @@ void X11WindowedBackend::init()
{
int screen = 0;
xcb_connection_t *c = nullptr;
#if HAVE_X11_XCB
Display *xDisplay = XOpenDisplay(deviceIdentifier().constData());
if (xDisplay) {
c = XGetXCBConnection(xDisplay);
XSetEventQueueOwner(xDisplay, XCBOwnsEventQueue);
screen = XDefaultScreen(xDisplay);
}
#else
c = xcb_connect(deviceIdentifier().constData(), &screen);
#endif
if (c && !xcb_connection_has_error(c)) {
m_connection = c;
m_screenNumber = screen;
#if HAVE_X11_XCB
m_display = xDisplay;
#endif
for (xcb_screen_iterator_t it = xcb_setup_roots_iterator(xcb_get_setup(m_connection));
it.rem;
--screen, xcb_screen_next(&it)) {
@ -325,10 +315,7 @@ Screens *X11WindowedBackend::createScreens(QObject *parent)
OpenGLBackend *X11WindowedBackend::createOpenGLBackend()
{
#if HAVE_X11_XCB
return new EglOnXBackend(connection(), display(), rootWindow(), screenNumer(), window());
#endif
return nullptr;
}
QPainterBackend *X11WindowedBackend::createQPainterBackend()