Add native mac copy/paste support to match win32 (#2546)

examples/example_apple_opengl2/example_apple_opengl2.xcodeproj/project.pbxproj

@@ -38,14 +38,11 @@
 		4080A99F20B034280036BA46 /* imgui_impl_osx.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = imgui_impl_osx.mm; path = ../imgui_impl_osx.mm; sourceTree = "<group>"; };
 		4080A9A020B034280036BA46 /* imgui_impl_opengl2.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_impl_opengl2.h; path = ../imgui_impl_opengl2.h; sourceTree = "<group>"; };
 		4080A9A120B034280036BA46 /* imgui_impl_osx.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_impl_osx.h; path = ../imgui_impl_osx.h; sourceTree = "<group>"; };
-		4080A9A420B0343C0036BA46 /* stb_truetype.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = stb_truetype.h; path = ../../stb_truetype.h; sourceTree = "<group>"; };
 		4080A9A520B0343C0036BA46 /* imgui_internal.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_internal.h; path = ../../imgui_internal.h; sourceTree = "<group>"; };
 		4080A9A620B0343C0036BA46 /* imgui_demo.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_demo.cpp; path = ../../imgui_demo.cpp; sourceTree = "<group>"; };
 		4080A9A720B0343C0036BA46 /* imgui.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui.cpp; path = ../../imgui.cpp; sourceTree = "<group>"; };
 		4080A9A820B0343C0036BA46 /* imgui.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui.h; path = ../../imgui.h; sourceTree = "<group>"; };
-		4080A9A920B0343C0036BA46 /* stb_rect_pack.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = stb_rect_pack.h; path = ../../stb_rect_pack.h; sourceTree = "<group>"; };
 		4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_draw.cpp; path = ../../imgui_draw.cpp; sourceTree = "<group>"; };
-		4080A9AB20B0343C0036BA46 /* stb_textedit.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = stb_textedit.h; path = ../../stb_textedit.h; sourceTree = "<group>"; };
 		4080A9AC20B0343C0036BA46 /* imconfig.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imconfig.h; path = ../../imconfig.h; sourceTree = "<group>"; };
 		4080A9B220B034E40036BA46 /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = System/Library/Frameworks/Cocoa.framework; sourceTree = SDKROOT; };
 		4080A9B420B034EA0036BA46 /* OpenGL.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenGL.framework; path = System/Library/Frameworks/OpenGL.framework; sourceTree = SDKROOT; };
@@ -74,9 +71,6 @@
 				4080A9A620B0343C0036BA46 /* imgui_demo.cpp */,
 				4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */,
 				4080A9A520B0343C0036BA46 /* imgui_internal.h */,
-				4080A9A920B0343C0036BA46 /* stb_rect_pack.h */,
-				4080A9AB20B0343C0036BA46 /* stb_textedit.h */,
-				4080A9A420B0343C0036BA46 /* stb_truetype.h */,
 				4080A99E20B034280036BA46 /* imgui_impl_opengl2.cpp */,
 				4080A9A020B034280036BA46 /* imgui_impl_opengl2.h */,
 				4080A9A120B034280036BA46 /* imgui_impl_osx.h */,

examples/imgui_impl_osx.mm

@@ -55,32 +55,6 @@ bool ImGui_ImplOSX_Init()
     io.KeyMap[ImGuiKey_Y]           = 'Y';
     io.KeyMap[ImGuiKey_Z]           = 'Z';
 
-    io.SetClipboardTextFn = [](void*, const char* str) -> void
-    {
-        NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
-        [pasteboard declareTypes:[NSArray arrayWithObject:NSPasteboardTypeString] owner:nil];
-        [pasteboard setString:[NSString stringWithUTF8String:str] forType:NSPasteboardTypeString];
-    };
-
-    io.GetClipboardTextFn = [](void*) -> const char*
-    {
-        NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
-        NSString* available = [pasteboard availableTypeFromArray: [NSArray arrayWithObject:NSPasteboardTypeString]];
-        if (![available isEqualToString:NSPasteboardTypeString])
-            return NULL;
-
-        NSString* string = [pasteboard stringForType:NSPasteboardTypeString];
-        if (string == nil)
-            return NULL;
-
-        const char* string_c = (const char*)[string UTF8String];
-        size_t string_len = strlen(string_c);
-        static ImVector<char> s_clipboard;
-        s_clipboard.resize((int)string_len + 1);
-        strcpy(s_clipboard.Data, string_c);
-        return s_clipboard.Data;
-    };
-
     return true;
 }
 

imgui.cpp

@@ -9524,6 +9524,8 @@ static void SettingsHandlerWindow_WriteAll(ImGuiContext* ctx, ImGuiSettingsHandl
 #else
 #include <windows.h>
 #endif
+#elif defined(__APPLE__)
+#include <TargetConditionals.h>
 #endif
 
 // Win32 API clipboard implementation
@@ -9576,6 +9578,58 @@ static void SetClipboardTextFn_DefaultImpl(void*, const char* text)
     ::CloseClipboard();
 }
 
+#elif defined(__APPLE__) && TARGET_OS_OSX && !defined(IMGUI_DISABLE_OSX_FUNCTIONS)
+#include <Carbon/Carbon.h>  // use ye olde worlde API to avoid need for separate .mm file
+static PasteboardRef main_clipboard = 0;
+
+static void SetClipboardTextFn_DefaultImpl(void*, const char* text)
+{
+    if (!main_clipboard)
+        PasteboardCreate(kPasteboardClipboard, &main_clipboard);
+    PasteboardClear(main_clipboard);
+    CFDataRef cf_data = CFDataCreate(kCFAllocatorDefault, (const UInt8*) text, strlen(text));
+    if (cf_data)
+    {
+        PasteboardPutItemFlavor(main_clipboard, (PasteboardItemID) 1, CFSTR("public.utf8-plain-text"), cf_data, 0);
+        CFRelease(cf_data);
+    }
+}
+
+static const char* GetClipboardTextFn_DefaultImpl(void*)
+{
+    if (!main_clipboard)
+        PasteboardCreate(kPasteboardClipboard, &main_clipboard);
+    PasteboardSynchronize(main_clipboard);
+
+    ItemCount item_count = 0;
+    PasteboardGetItemCount(main_clipboard, &item_count);
+
+    for (int i = 0; i < item_count; i++)
+    {
+        PasteboardItemID item_id = 0;
+        PasteboardGetItemIdentifier(main_clipboard, i + 1, &item_id);
+        CFArrayRef flavor_type_array = 0;
+        PasteboardCopyItemFlavors(main_clipboard, item_id, &flavor_type_array);
+        for (CFIndex j = 0, nj = CFArrayGetCount(flavor_type_array); j < nj; j++)
+        {
+            CFDataRef cf_data;
+            if (PasteboardCopyItemFlavorData(main_clipboard, item_id, CFSTR("public.utf8-plain-text"), &cf_data) == noErr)
+            {
+                static ImVector<char> clipboard_text;
+
+                int length = (int) CFDataGetLength(cf_data);
+                clipboard_text.resize(length + 1);
+                CFDataGetBytes(cf_data, CFRangeMake(0, length), (UInt8*) clipboard_text.Data);
+                clipboard_text[length] = 0;
+
+                CFRelease(cf_data);
+                return clipboard_text.Data;
+            }
+        }
+    }
+    return "";
+}
+
 #else
 
 // Local ImGui-only clipboard implementation, if user hasn't defined better clipboard handlers