fix: make hwdata truly a runtime dependency

Summary: Followup to comments in D10041

Reviewers: #plasma, ngraham, davidedmundson, zzag

Reviewed By: #plasma, ngraham, davidedmundson, zzag

Subscribers: iasensio, wstephenson, davidedmundson, zzag, ngraham, kwin, cgiboudeaux

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D27729

CMakeLists.txt

@@ -293,7 +293,6 @@ set_package_properties(hwdata PROPERTIES
     PURPOSE "Runtime-only dependency needed for mapping monitor hardware vendor IDs to full names"
     URL "https://github.com/vcrhonek/hwdata"
 )
-set(HAVE_HWDATA ${hwdata_FOUND})
 
 include(ECMQMLModules)
 ecm_find_qmlmodule(QtQuick 2.3)

cmake/modules/Findhwdata.cmake

@@ -34,7 +34,7 @@
 if (UNIX AND NOT APPLE)
     find_path(hwdata_DIR NAMES hwdata/pnp.ids HINTS /usr/share ENV XDG_DATA_DIRS)
     find_file(hwdata_PNPIDS_FILE NAMES hwdata/pnp.ids HINTS /usr/share)
-    if (hwdata_DIR-NOTFOUND OR hwdata_PNPIDS_FILE-NOTFOUND)
+    if (NOT hwdata_DIR OR NOT hwdata_PNPIDS_FILE)
         set(hwdata_FOUND FALSE)
     else()
         set(hwdata_FOUND TRUE)

config-kwin.h.cmake

@@ -25,7 +25,6 @@
 #cmakedefine01 HAVE_BREEZE_DECO
 #cmakedefine01 HAVE_LIBCAP
 #cmakedefine01 HAVE_SCHED_RESET_ON_FORK
-#cmakedefine01 HAVE_HWDATA
 #if HAVE_BREEZE_DECO
 #define BREEZE_KDECORATION_PLUGIN_ID "${BREEZE_KDECORATION_PLUGIN_ID}"
 #endif
@@ -42,7 +41,3 @@
 #define XCB_ICCCM_WM_STATE_NORMAL 1
 #define XCB_ICCCM_WM_STATE_ICONIC 3
 #endif
-
-#if HAVE_HWDATA
-#cmakedefine HWDATA_PNPIDS_FILE "@hwdata_PNPIDS_FILE@"
-#endif

plugins/platforms/drm/edid.cpp

@@ -23,6 +23,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "config-kwin.h"
 
 #include <QFile>
+#include <QStandardPaths>
 
 namespace KWin
 {
@@ -142,11 +143,10 @@ static QByteArray parseSerialNumber(const uint8_t *data)
 
 static QByteArray parseVendor(const uint8_t *data)
 {
-#if HAVE_HWDATA
     const auto pnpId = parsePnpId(data);
 
     // Map to vendor name
-    QFile pnpFile(QStringLiteral(HWDATA_PNPIDS_FILE));
+    QFile pnpFile(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("hwdata/pnp.ids")));
     if (pnpFile.exists() && pnpFile.open(QIODevice::ReadOnly)) {
         while (!pnpFile.atEnd()) {
             const auto line = pnpFile.readLine();
@@ -155,9 +155,7 @@ static QByteArray parseVendor(const uint8_t *data)
             }
         }
     }
-#else
-    Q_UNUSED(data)
-#endif
+
     return {};
 }