XE系列虽然可以跨平台,但是在跨平台的道路上只是走了一小半的路,很多平台下的接口都没实现彻底,所以为了某些功能,还必须自己去摸索。
想实现程序中可以内嵌浏览器的功能,但是Firemonkey还没有对应的控件,
TMS 倒是提供了true native Mac OS-X application development, TMS mCL 以及 JVEsoft的组件包,提供了对应的web浏览器控件,但是都不是免费的,而且试用么TMS的问题还是有很多,为了省银子,卷起袖子自己搞。
思路其实很简单,苹果已经提供了webkit的框架,我的firemonkey只要能调用他的框架,就能使用它的功能了。
这也是XE系列的思路。
现在要做的是如何翻译Mac OS Api了,这还是第一次搞,所以还不知道怎么弄,翻山越岭搜了一下,发现翻译想自己实现webview的只有一个信息http://stackoverflow.com/questions/9731817/webview-not-displaying-in-macos-using-delphi-xe2,他遇到了无法显示出来的一个问题。我跑了他的代码,发现XE2下的代码已经不能在XE4下运行了,稍作修改后,程序可以正常运行了,但是一直没有效果,真的很困惑,问题出在哪里了呢?
在github上有搜到了类似的代码,看代码应该是日本人写的https://gist.github.com/tokibito/6945988/raw/6770e1fd3f8b3c8fd2e0da5498248a7e79f73944/Unit1.pas,还是打不开网页。
于是发帖求助,一个老外给出了实现的方案,真心感谢,也不得不佩服他们。
- unit Unit1;
- interface
- uses
- System.SysUtils, System.Types, System.UITypes, System.Rtti, System.Classes,
- System.Variants, FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs,
- FMX.StdCtrls, Macapi.CocoaTypes, Macapi.Foundation, Macapi.AppKit,
- Macapi.ObjectiveC, FMX.Platform.Mac;
- type
- WebFrameClass = interface(NSObjectClass)
- ['{7BE750C8-DFEC-4870-851A-12DBCB0B78F6}']
- end;
- WebFrame = interface(NSObject)
- ['{BCFA04BE-41AB-4B78-89C0-3330F12C7695}']
- procedure loadRequest(request: NSURLRequest); cdecl;
- end;
- TWebFrame = class(TOCGenericImport<WebFrameClass, WebFrame>) end;
- WebViewClass = interface(NSViewClass)
- ['{0D9F44B7-09FD-4E35-B96E-8DB71B9A2537}']
- {class} function canShowMIMEType(MIMEType: NSString): Boolean; cdecl;
- end;
- WebView = interface(NSView)
- ['{C36D8016-2FCB-49F0-BA1C-C9913A37F9AC}']
- procedure clos; cdecl;
- procedure setHostWindow(hostWindow: NSWindow); cdecl;
- function initWithFrame(frame: NSRect; frameName: NSString; groupName: NSString): Pointer; cdecl;
- function mainFrame: WebFrame; cdecl;
- end;
- TWebView = class(TOCGenericImport<WebViewClass, WebView>) end;
- TOCLocalAccess = class(TOCLocal);
- TForm1 = class(TForm)
- procedure FormCreate(Sender: TObject);
- private
- MyWebView: WebView;
- end;
- var
- Form1: TForm1;
- implementation
- {$R *.fmx}
- procedure TForm1.FormCreate(Sender: TObject);
- var
- PWebView: Pointer;
- FwkMod: HMODULE;
- urlStr: NSURL;
- urlreq: NSURLRequest;
- ObjTOC: TOCLocal;
- MyView: NSView;
- const
- WebKitFWK: string = '/System/Library/Frameworks/WebKit.framework/WebKit';
- begin
- FwkMod := System.SysUtils.LoadLibrary(PWideChar(WebKitFWK)); //必须要加
- MyView := WindowHandleToPlatform(Form1.Handle).View;
- PWebView := TWebView.Alloc.initWithFrame(MakeNSRect(10, 10, 200, 200), nil, nil);
- MyWebView := TWebView.Wrap(PWebView);
- MyView.addSubview(MyWebView);
- urlStr := TNSURL.Wrap(TNSURL.Alloc.initWithString(NSSTR('http://www.baidu.com/'))); // never ever call initWith... on an object created with "create". Some of these already fail on Mavericks, some may fail in the future
- urlreq := TNSURLRequest.Create; // fixing this is left as an exercise for the reader :) see previous line
- urlreq.initWithURL(urlstr); // .....
- MyWebView.mainFrame.loadRequest(urlreq);
- urlreq.release; // if you call alloc or create, you also have to call release, otherwise you will leak your object (create rule)
- // same for urlstr, ...
- end;
- end.
- var
- PWebView: Pointer;
- FwkMod: HMODULE;
- urlStr: NSURL;
- urlreq: NSURLRequest;
- ObjTOC: TOCLocal;
- MyNSWindow : NSWindow;
- MyView: NSView;
- const
- WebKitFWK: string = '/System/Library/Frameworks/WebKit.framework/WebKit';
- begin
- FwkMod := System.SysUtils.LoadLibrary(PWideChar(WebKitFWK));
- {//方法一
- ObjTOC := (WindowHandleToPlatform(Form1.Handle).Handle as TOCLocal);
- MyNSWindow := NSWindow(TOCLocalAccess(ObjTOC).Super);}
- //方法二
- MyNSWindow := WindowHandleToPlatform(Form1.Handle).Wnd;
- PWebView := TWebView.Alloc.initWithFrame(MakeNSRect(0, 0, 200, 200), nil, nil);
- MyWebView := TWebView.Wrap(PWebView);
- MyWebView.setHostWindow(MyNSWindow);
- //导致错误的地方
- //urlStr := TNSURL.Create;
- //urlstr.initWithString(NSSTR('http://www.google.com.hk/'));
- urlStr := TNSURL.Wrap(TNSURL.Alloc.initWithString(NSSTR('http://www.google.com.hk/')));
- urlreq := TNSURLRequest.Create;
- urlreq.initWithURL(urlstr);
- MyWebView.mainFrame.loadRequest(urlreq);
- MyNSWindow.setContentView(MyWebView);
- end;
http://blog.csdn.net/qustdong/article/details/17139137