main.c

linux-gtk的开发,在linux环境下的gtk库的开发

/**************************************************************************************************
*	Author:	Rio Tang [e-mail]
*	File:		main.c Main entry point of chuoren browser
*	Lisence:	GPL v3
	
window 状态改变后调用该函数
GDK_WINDOW_STATE_WITHDRAWN 	the window is not shown.
GDK_WINDOW_STATE_ICONIFIED 	the window is minimized.
GDK_WINDOW_STATE_MAXIMIZED 	the window is maximized.
GDK_WINDOW_STATE_STICKY 		the window is sticky.
GDK_WINDOW_STATE_FULLSCREEN 	the window is maximized without decorations.
GDK_WINDOW_STATE_ABOVE 		the window is kept above other windows.
GDK_WINDOW_STATE_BELOW 		the window is kept below other windows.
typedef struct {
  GdkEventType type;
  GdkWindow *window;
  gint8 send_event;
  GdkWindowState changed_mask;
  GdkWindowState new_window_state;
} GdkEventWindowState;

CURL
 struct CURLMsg {   
	CURLMSG msg;  / what this message means/   
	CURL *easy_handle;  /the handle it concerns /  
	union {   void  *whatever; / message-specific data /   
	CURLcode result; / return code for transfer /   
	} data;
};
When msg is CURLMSG_DONE, the message identifies a transfer that is done, and then result contains the return code for the easy handle that just completed. 

typedef enum {
  CURLE_OK = 0,
  CURLE_UNSUPPORTED_PROTOCOL,    / 1 /
  CURLE_FAILED_INIT,             / 2 /
  CURLE_URL_MALFORMAT,           / 3 /
  CURLE_URL_MALFORMAT_USER,      /4 - NOT USED /
  CURLE_COULDNT_RESOLVE_PROXY,   / 5 /
  CURLE_COULDNT_RESOLVE_HOST,    / 6 /
  CURLE_COULDNT_CONNECT,         / 7 /
  CURLE_FTP_WEIRD_SERVER_REPLY,  / 8 /
  CURLE_FTP_ACCESS_DENIED,       / 9 a service was denied by the FTP server
                                    due to lack of access - when login fails
                                    this is not returned. /
  CURLE_FTP_USER_PASSWORD_INCORRECT, / 10 - NOT USED /
  CURLE_FTP_WEIRD_PASS_REPLY,    / 11 /
  CURLE_FTP_WEIRD_USER_REPLY,    / 12 /
  CURLE_FTP_WEIRD_PASV_REPLY,    / 13 /
  CURLE_FTP_WEIRD_227_FORMAT,    / 14 /
  CURLE_FTP_CANT_GET_HOST,       / 15 /
  CURLE_FTP_CANT_RECONNECT,      / 16 /
  CURLE_FTP_COULDNT_SET_BINARY,  / 17 /
  CURLE_PARTIAL_FILE,            / 18 /
  CURLE_FTP_COULDNT_RETR_FILE,   / 19 /
  CURLE_FTP_WRITE_ERROR,         / 20 /
  CURLE_FTP_QUOTE_ERROR,         / 21 /
  CURLE_HTTP_RETURNED_ERROR,     / 22 /
  CURLE_WRITE_ERROR,             / 23 /
  CURLE_MALFORMAT_USER,          / 24 - NOT USED /
  CURLE_UPLOAD_FAILED,           / 25 - failed upload "command" /
  CURLE_READ_ERROR,              / 26 - could open/read from file /
  CURLE_OUT_OF_MEMORY,           / 27 /
  / Note: CURLE_OUT_OF_MEMORY may sometimes indicate a conversion error
           instead of a memory allocation error if CURL_DOES_CONVERSIONS
           is defined  /
  CURLE_OPERATION_TIMEOUTED,     / 28 - the timeout time was reached /
  CURLE_FTP_COULDNT_SET_ASCII,   / 29 - TYPE A failed /
  CURLE_FTP_PORT_FAILED,         / 30 - FTP PORT operation failed /
  CURLE_FTP_COULDNT_USE_REST,    / 31 - the REST command failed /
  CURLE_FTP_COULDNT_GET_SIZE,    / 32 - the SIZE command failed /
  CURLE_HTTP_RANGE_ERROR,        / 33 - RANGE "command" didn't work /
  CURLE_HTTP_POST_ERROR,         / 34 /
  CURLE_SSL_CONNECT_ERROR,       / 35 - wrong when connecting with SSL /
  CURLE_BAD_DOWNLOAD_RESUME,     / 36 - couldn't resume download /
  CURLE_FILE_COULDNT_READ_FILE,  / 37 /
  CURLE_LDAP_CANNOT_BIND,        / 38 /
  CURLE_LDAP_SEARCH_FAILED,      / 39 /
  CURLE_LIBRARY_NOT_FOUND,       / 40 /
  CURLE_FUNCTION_NOT_FOUND,      / 41 /
  CURLE_ABORTED_BY_CALLBACK,     / 42 /
  CURLE_BAD_FUNCTION_ARGUMENT,   / 43 /
  CURLE_BAD_CALLING_ORDER,       / 44 - NOT USED /
  CURLE_INTERFACE_FAILED,        / 45 - CURLOPT_INTERFACE failed /
  CURLE_BAD_PASSWORD_ENTERED,    / 46 - NOT USED /
  CURLE_TOO_MANY_REDIRECTS ,     / 47 - catch endless re-direct loops /
  CURLE_UNKNOWN_TELNET_OPTION,   / 48 - User specified an unknown option /
  CURLE_TELNET_OPTION_SYNTAX ,   / 49 - Malformed telnet option /
  CURLE_OBSOLETE,                / 50 - NOT USED /
  CURLE_SSL_PEER_CERTIFICATE,    / 51 - peer's certificate wasn't ok /
  CURLE_GOT_NOTHING,             / 52 - when this is a specific error /
  CURLE_SSL_ENGINE_NOTFOUND,     / 53 - SSL crypto engine not found /
  CURLE_SSL_ENGINE_SETFAILED,    / 54 - can not set SSL crypto engine as
                                    default /
  CURLE_SEND_ERROR,              / 55 - failed sending network data /
  CURLE_RECV_ERROR,              / 56 - failure in receiving network data /
  CURLE_SHARE_IN_USE,            / 57 - share is in use /
  CURLE_SSL_CERTPROBLEM,         / 58 - problem with the local certificate /
  CURLE_SSL_CIPHER,              / 59 - couldn't use specified cipher /
  CURLE_SSL_CACERT,              / 60 - problem with the CA cert (path?) /
  CURLE_BAD_CONTENT_ENCODING,    / 61 - Unrecognized transfer encoding /
  CURLE_LDAP_INVALID_URL,        / 62 - Invalid LDAP URL /
  CURLE_FILESIZE_EXCEEDED,       / 63 - Maximum file size exceeded /
  CURLE_FTP_SSL_FAILED,          / 64 - Requested FTP SSL level failed /
  CURLE_SEND_FAIL_REWIND,        / 65 - Sending the data requires a rewind
                                    that failed /
  CURLE_SSL_ENGINE_INITFAILED,   / 66 - failed to initialise ENGINE /
  CURLE_LOGIN_DENIED,            / 67 - user, password or similar was not
                                    accepted and we failed to login /
  CURLE_TFTP_NOTFOUND,           / 68 - file not found on server /
  CURLE_TFTP_PERM,               / 69 - permission problem on server /
  CURLE_TFTP_DISKFULL,           / 70 - out of disk space on server /
  CURLE_TFTP_ILLEGAL,            / 71 - Illegal TFTP operation /
  CURLE_TFTP_UNKNOWNID,          / 72 - Unknown transfer ID /
  CURLE_TFTP_EXISTS,             / 73 - File already exists /
  CURLE_TFTP_NOSUCHUSER,         / 74 - No such user /
  CURLE_CONV_FAILED,             / 75 - conversion failed /
  CURLE_CONV_REQD,               / 76 - caller must register conversion
                                    callbacks using curl_easy_setopt options
                                    CURLOPT_CONV_FROM_NETWORK_FUNCTION,
                                    CURLOPT_CONV_TO_NETWORK_FUNCTION, and
                                    CURLOPT_CONV_FROM_UTF8_FUNCTION /
  CURLE_SSL_CACERT_BADFILE,      / 77 - could not load CACERT file, missing
                                    or wrong format /
  CURLE_REMOTE_FILE_NOT_FOUND,   / 78 - remote file not found /
  CURLE_SSH,                     / 79 - error from the SSH layer, somewhat
                                    generic so the error message will be of
                                    interest when this has happened /

  CURLE_SSL_SHUTDOWN_FAILED,     / 80 - Failed to shut down the SSL
                                    connection /
  CURL_LAST / never use! /
} CURLcode;
***************************************************************************************************/

#include <gtk/gtk.h>
#include <glade/glade.h>
#include <stdio.h>
#include <string.h>
#include <libgen.h>
#include <libgtkhtml/gtkhtml.h>

#include "glibcurl.h"

static gchar* 			g_file_name 	= NULL;
static GtkWidget*		g_combox		= NULL;
static GtkWidget*		g_win			= NULL;
static gboolean 		g_is_refr		= TRUE;
static gboolean			g_is_trans		= FALSE;//是否正在传输


static HtmlDocument*	g_document		= NULL;
static GtkWidget*		g_view			= NULL;


static void curlCallback( void* data) 
{
	CURLMsg* msg;
	int inQueue;
	while (1) {
		msg = curl_multi_info_read( glibcurl_handle(), &inQueue);
		if (msg == 0) {
			break;
		}
		if (msg->msg != CURLMSG_DONE) 
			continue;
		else {			
			//在这里先free url,再删除curl handler
			HtmlStream* stream = NULL;						
			curl_easy_getinfo( msg->easy_handle, CURLINFO_PRIVATE, (char**)&stream);
			char * eurl = NULL;
			curl_easy_getinfo( msg->easy_handle, CURLINFO_EFFECTIVE_URL, &eurl);
			g_print("Connection %s closed, result code %d\n", eurl, msg->data.result);
			if( g_file_name) {				
				//add text to popup menu

				if( eurl)
					g_free( eurl);
				if( stream)
					html_stream_close( stream);
			}
			g_is_trans = FALSE;
			glibcurl_remove( msg->easy_handle);
		}		
	}
}

static size_t curlWriter( void* ptr, size_t size, size_t nmemb, void *stream) 
{
	if (ptr == 0) return 0; /* NOP, just to avoid "unused param" warning */
	g_print("Bytes length %d\n", size*nmemb);
	//write the contents to htmlview widget	
	if( stream)
		html_stream_write(stream, ptr, size*nmemb);
	else
		html_document_write_stream(	g_document, ptr, size*nmemb);
	return size * nmemb;
}
/**
param@ is_added 是否在combbox的下拉菜单中增加一个菜单项
param@ stream 对应的一个htmlstream
*/
static void read_url( const char* url, gboolean is_added, HtmlStream* stream)
{
	CURL* hcurl;
	if( url && strlen( url) > 0) {
		if( is_added == TRUE) 
			gtk_combo_box_append_text( GTK_COMBO_BOX(g_combox), g_file_name);
		char* dupurl = strdup(url);		
		hcurl = curl_easy_init();		
		curl_easy_setopt(hcurl, CURLOPT_URL, dupurl);
		curl_easy_setopt(hcurl, CURLOPT_VERBOSE, 1);
		curl_easy_setopt(hcurl, CURLOPT_BUFFERSIZE, 1024*32);
		curl_easy_setopt(hcurl, CURLOPT_WRITEFUNCTION, curlWriter);
		curl_easy_setopt(hcurl, CURLOPT_WRITEDATA, stream);
		curl_easy_setopt(hcurl, CURLOPT_PRIVATE, stream);
		g_is_trans = TRUE;		
		glibcurl_add( hcurl);
	}
}

static void locale_file_name( const char* utf8_file, char* ret_file)
{
	int wbytes = 0; 
	gchar* strtmp = g_locale_from_utf8( utf8_file, -1, NULL, &wbytes, NULL);
	if( !strstr( utf8_file, "://")) {
		snprintf( ret_file, PATH_MAX, "file://%s", strtmp?strtmp:utf8_file);
		
	} else {
		snprintf( ret_file, PATH_MAX, "%s", strtmp?strtmp:utf8_file);
		
	}
	if( strtmp) g_free( strtmp);
	
}

static void on_comb_editing_done( GtkWidget *widget, gpointer user_data)
{
	g_print("Something added\n");
	if( g_file_name) g_free(g_file_name),g_file_name=NULL;
	if( g_is_trans == FALSE){
		g_file_name = gtk_combo_box_get_active_text( GTK_COMBO_BOX(g_combox));
		char furl[PATH_MAX] = {0};
		if( strlen( g_file_name) > 0) {
			html_view_set_document(HTML_VIEW(g_view), NULL);
			html_document_clear( g_document);
			html_view_set_document(HTML_VIEW(g_view), g_document);			
			html_document_open_stream( g_document, "text/html");