Add system clipboard reads, writes and change monitoring

Author: lijy91

CMakeLists.txt

@@ -45,3 +45,6 @@ add_subdirectory(examples/desktop_features_example)
 if(BUILD_TESTING)
   add_subdirectory(tests)
 endif()
+
+add_subdirectory(examples/clipboard_example)
+add_subdirectory(examples/clipboard_c_example)

examples/clipboard_c_example/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_executable(clipboard_c_example main.c)
+set_target_properties(clipboard_c_example PROPERTIES LINKER_LANGUAGE CXX)
+target_link_libraries(clipboard_c_example PRIVATE nativeapi)

examples/clipboard_c_example/main.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include "../../src/capi/application_c.h"
+#include "../../src/capi/clipboard_c.h"
+
+static void Read(bool success,
+                 const native_clipboard_data_t* data,
+                 native_event_delivery_t delivery,
+                 void* user_data) {
+  (void)user_data;
+  if (success)
+    printf("text=%d html=%d image=%d files=%ld\n", data->text != NULL, data->html != NULL,
+           data->image != 0, data->file_paths.count);
+  // Copy data or native_handle_retain(image) before acknowledging if keeping it.
+  native_event_delivery_complete(delivery, success);
+  native_application_quit(success ? 0 : 1);
+}
+int main(void) {
+  if (!native_clipboard_is_supported())
+    return 1;
+  native_clipboard_read(Read, NULL, NULL);
+  return native_application_run();
+}

examples/clipboard_example/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_executable(clipboard_example main.cpp)
+target_link_libraries(clipboard_example PRIVATE nativeapi)

examples/clipboard_example/main.cpp

@@ -0,0 +1,24 @@
+#include <iostream>
+#include "../../src/clipboard.h"
+#include "../../src/foundation/dispatcher.h"
+
+int main(int argc, char** argv) {
+  auto& clipboard = nativeapi::Clipboard::GetInstance();
+  if (!nativeapi::Clipboard::IsSupported())
+    return 1;
+  // Passing an argument copies it; otherwise inspect the existing clipboard.
+  if (argc > 1 && !clipboard.WriteText(argv[1]))
+    return 1;
+  bool done = false;
+  bool success = false;
+  clipboard.Read([&](bool ok, nativeapi::ClipboardData data) {
+    success = ok;
+    if (ok)
+      std::cout << "text=" << bool(data.text) << " html=" << bool(data.html)
+                << " image=" << bool(data.image) << " files=" << data.file_paths.size() << '\n';
+    done = true;
+  });
+  while (!done)
+    nativeapi::RunMainThreadLoopFor(10);
+  return success ? 0 : 1;
+}

include/nativeapi.h

@@ -8,6 +8,7 @@
 #include "../src/accessibility_manager.h"
 #include "../src/app_info.h"
 #include "../src/application.h"
+#include "../src/clipboard.h"
 #include "../src/device_info.h"
 #include "../src/dialog.h"
 #include "../src/display.h"
@@ -46,6 +47,7 @@
 #include "../src/capi/accessibility_manager_c.h"
 #include "../src/capi/app_info_c.h"
 #include "../src/capi/application_c.h"
+#include "../src/capi/clipboard_c.h"
 #include "../src/capi/color_c.h"
 #include "../src/capi/common_c.h"
 #include "../src/capi/device_info_c.h"