From 3eb0350f563baec95ac4e9c71d6c4777e87ce66f 2021-07-31 16:59:07
From: Alexis Jeandet <alexis.jeandet@member.fsf.org>
Date: 2021-07-31 16:59:07
Subject: [PATCH] Adds basic demo plugin to explain how to write custom plugins in C++

Signed-off-by: Alexis Jeandet <alexis.jeandet@member.fsf.org>

---

diff --git a/app/include/MainWindow.h b/app/include/MainWindow.h
index d418326..c2f3cc7 100644
--- a/app/include/MainWindow.h
+++ b/app/include/MainWindow.h
@@ -70,12 +70,7 @@ private:
 
 inline void init_resources()
 {
-#ifdef QT_STATICPLUGIN
-#ifndef SQP_NO_PLUGINS
-    Q_IMPORT_PLUGIN(PythonProviders)
-    Q_INIT_RESOURCE(python_providers);
-#endif
-#endif
+    Q_IMPORT_PLUGIN(DemoPlugin);
     Q_INIT_RESOURCE(sqpguiresources);
     SqpApplication::setOrganizationName("LPP");
     SqpApplication::setOrganizationDomain("lpp.fr");
diff --git a/app/meson.build b/app/meson.build
index 3c6bbb3..dc9da82 100644
--- a/app/meson.build
+++ b/app/meson.build
@@ -29,32 +29,16 @@ else
   rc = []
 endif
 
-app_libs = []
-cpp_args = []
-if 'static' == get_option('default_library')
-  app_libs = [sciqlop_python_providers]
-  cpp_args += ['-DQT_STATICPLUGIN']
-endif
+cpp_args = ['-DQT_STATICPLUGIN']
 
-#sciqlop_app = executable('sciqlop',
-#                       app_sources,
-#                       app_moc_files,
-#                       rc,
-#                       include_directories : [ app_inc],
-#                       link_with: app_libs,
-#                       cpp_args: cpp_args,
-#                       dependencies : [sciqlop_gui, sciqlop_core],
-#                       install : true
-#                       )
 
 sciqlop_app_lib = library('sciqlop',
                        app_sources,
                        app_moc_files,
                        rc,
                        include_directories : [ app_inc],
-                       link_with: app_libs,
                        cpp_args: cpp_args,
-                       dependencies : [sciqlop_gui, sciqlop_core],
+                       dependencies : [sciqlop_gui, sciqlop_core, demo_plugin_dep],
                        install : true
                        )
 
diff --git a/plugins/demo_plugin/DemoPlugin.cpp b/plugins/demo_plugin/DemoPlugin.cpp
new file mode 100644
index 0000000..76e73e3
--- /dev/null
+++ b/plugins/demo_plugin/DemoPlugin.cpp
@@ -0,0 +1,7 @@
+#include "DemoPlugin.hpp"
+#include <iostream>
+
+void DemoPlugin::initialize()
+{
+    std::cout << "Loading DemoPlugin \\o/" << std::endl;
+}
diff --git a/plugins/demo_plugin/DemoPlugin.hpp b/plugins/demo_plugin/DemoPlugin.hpp
new file mode 100644
index 0000000..3957021
--- /dev/null
+++ b/plugins/demo_plugin/DemoPlugin.hpp
@@ -0,0 +1,19 @@
+#ifndef SCIQLOP_DEMOPLUGIN_H
+#define SCIQLOP_DEMOPLUGIN_H
+
+#include <IPlugin.h>
+#include <QtPlugin>
+
+#define PLUGIN_JSON_FILE_PATH "DemoPlugin.json"
+
+
+class DemoPlugin : public QObject, public IPlugin {
+    Q_OBJECT
+    Q_INTERFACES(IPlugin)
+    Q_PLUGIN_METADATA(IID "sciqlop.plugin.IPlugin" FILE PLUGIN_JSON_FILE_PATH)
+public:
+    /// @sa IPlugin::initialize()
+    void initialize() final;
+};
+
+#endif // SCIQLOP_DEMOPLUGIN_H
diff --git a/plugins/demo_plugin/DemoPlugin.json b/plugins/demo_plugin/DemoPlugin.json
new file mode 100644
index 0000000..824bca4
--- /dev/null
+++ b/plugins/demo_plugin/DemoPlugin.json
@@ -0,0 +1,3 @@
+{
+    "name" : "DemoPlugin"
+}
diff --git a/plugins/demo_plugin/meson.build b/plugins/demo_plugin/meson.build
new file mode 100644
index 0000000..d200414
--- /dev/null
+++ b/plugins/demo_plugin/meson.build
@@ -0,0 +1,25 @@
+demoplugin_moc_headers = [
+  'DemoPlugin.hpp'
+]
+
+demoplugin_sources = [
+  'DemoPlugin.cpp'
+]
+
+
+demoplugin_moc_files = qt5.preprocess(
+                                     moc_headers: demoplugin_moc_headers,
+                                     dependencies: sciqlop_core,
+                                     include_directories: core_inc,
+                                     moc_extra_arguments : ['-DQT_PLUGIN', '-DQT_STATICPLUGIN']
+                                     )
+
+demo_plugin = static_library('demo_plugin',
+                       'DemoPlugin.cpp',
+                       demoplugin_moc_files,
+                       extra_files: 'DemoPlugin.hpp',
+                       dependencies : [sciqlop_core],
+                       cpp_args : ['-DQT_PLUGIN', '-DQT_STATICPLUGIN']
+                       )
+
+demo_plugin_dep = declare_dependency(link_with: demo_plugin, include_directories: '.')
diff --git a/plugins/meson.build b/plugins/meson.build
index e69de29..52db1c2 100644
--- a/plugins/meson.build
+++ b/plugins/meson.build
@@ -0,0 +1,2 @@
+
+subdir('demo_plugin')