myapplication.h

基于paragui实现的一个在linux操作系统下使用framebuffer来进行窗口模式的文件选择的源代码。

#include "PmpListBox.h"
#include "pgapplication.h"
#include "pgnavigator.h"
#include "vector"
#include "sys/types.h"
#include "sys/stat.h"
#include "dirent.h"
#include "iostream"
#include "string.h"
#include "PmpRichEdit.h"
#include "stdlib.h"

using namespace std;

class MyApplication : public PG_Application, public PG_Navigator {
public:
        char *NowPath;
        MyApplication();
        ~MyApplication();
        PmpListBox *MyListBox;
        PmpRichEdit *MyRichEdit;
        void GetFileList();
        bool IsDirectory(char*);
        void GoToNextPath(char*);
        void BackToPrevPath();
        void ShowItem(PmpListBox*);
        const char* GetSelectedText(PmpListBox*);
        bool handleListBoxItem(PmpListBox*,PmpRichEdit*);
 
private:       
        vector<string> FileList;
        char *FilePath;
        char *FileName;
        bool maiplayer;
        bool eventKeyDown(const SDL_KeyboardEvent* key);
};

MyApplication::MyApplication():MyRichEdit(NULL),maiplayer(false)
{
       NowPath = new char[1024];
}

MyApplication::~MyApplication()
{
      delete NowPath;
}

bool MyApplication::eventKeyDown(const SDL_KeyboardEvent* key) {
	switch(key->keysym.sym) {
		case SDLK_UP:
                    if(MyRichEdit == NULL)
                    {
                        if(FileList.size() < 12 ||MyListBox->GetSelectedIndex() >=FileList.size() - 11)
                        { 
                                MyListBox->SelectPrevItem();
                        }
                        else if(MyListBox->GetScrollPosY() <= 20)
                        {
                                MyListBox->SelectPrevItem();
                                MyListBox->Scroll(0);
                        }
                        else
                        {       
                                MyListBox->SelectPrevItem();
                                MyListBox->Scroll((MyListBox->GetScrollPosY())-20);
                        }
                    }
                    else
                    {
                        MyRichEdit -> Up();
                    }
          	break;
		case SDLK_DOWN:
                    if(MyRichEdit == NULL)
                    {
                        if(MyListBox->GetSelectedIndex() < 11)
                        {
                             MyListBox->SelectNextItem();
                        }
                        else 
                        {    
                             MyListBox->SelectNextItem();
                             MyListBox->Scroll((MyListBox->GetScrollPosY())+20);
                        }
                    }
                    else
                    {
                        MyRichEdit -> Down();
                    }
                    break;
                case SDLK_KP_ENTER:
                        handleListBoxItem(MyListBox,MyRichEdit);	
                        break;
                case SDLK_F1:
                        delete MyRichEdit;
                        MyRichEdit = NULL;
                        break;
                default:
                        break;
                }
}

bool MyApplication::handleListBoxItem(PmpListBox *ListBox,PmpRichEdit *RichEdit)
{    
     char *s = new char[256];
     strcpy(s,GetSelectedText(ListBox));
     char *s1 = new char[1024];
     strcpy(s1,NowPath);
     strcat(s1,"/");
     strcat(s1,s);
     string s2 = s;
     if(strcmp(s,"..") == 0 && strcmp(NowPath,"/home") != 0)
     {
                ListBox -> DeleteAll();
                BackToPrevPath();
                ShowItem(ListBox);
                delete s;
                delete s1;
                return true;
     }
     if(IsDirectory(s1))
     {
                ListBox -> DeleteAll();
                GoToNextPath(s);
                ShowItem(ListBox);
                delete s;
                delete s1;
                return true;
     }
     if(s2.compare(s2.size()-4,s2.size(),".cpp") == 0)
     {          
                char *s4 = new char[1024];
                strcpy(s4,"cp ");
                strcat(s4,s1);
                strcat(s4," temp");
                system(s4);      
                MyRichEdit = new PmpRichEdit(NULL,PG_Rect(0,0,640,480));
                MyRichEdit->LoadText("temp");
                MyRichEdit->Show();        
                delete s;
                delete s1;
                delete s4;
                return true;
     }
     if(s2.compare(s2.size()-4,s2.size(),".mpg")== 0)
     {
                cout << "1" << endl; 
                char *s3 = new char[256];
                string cmd = "./maiplayer auto";
                cout << "2" << endl;
                cmd = cmd + s1;
                system(cmd.c_str());
                cout <<"3" << endl;
                delete s;
                delete s1;
                delete s3;
                return true;               
     }
     return false;
}

void MyApplication::BackToPrevPath()
{
     char *s = new char[1024];
     strcpy(s,NowPath);
     char *p = rindex(s,'/');
     char A[1024] = "";
     for(int i = 0; i < strlen(s)-strlen(p); i++)
     {
             A[i] = s[i];
     }
     strcpy(NowPath,A);
     GetFileList();
     delete s;   
}

void MyApplication::GoToNextPath(char *FileName)
{
     char *s = new char[1024];
     strcpy(s,NowPath);
     strcat(s,"/");
     strcat(s,FileName);
     strcpy(NowPath,s);
     GetFileList(); 
     delete s;    
}

const char* MyApplication::GetSelectedText(PmpListBox *ListBox)
{
     PG_ListBoxBaseItem *item = ListBox->GetSelectedItem();
     const char *s = item->GetText();
     return s;  
} 

void MyApplication::GetFileList()
{
        DIR *dp;
        struct dirent   *dirp;
        
        FileList.clear();
        dp = opendir(NowPath);
        while(( dirp = readdir(dp)) != NULL)
        {        
                string s1 = dirp->d_name;
                char *s = new char[1024];
                strcpy(s,NowPath);
                strcat(s,"/");
                strcat(s,dirp->d_name);
                if(s1.size() > 4 && s1.compare(s1.size()-4,s1.size(),".cpp") == 0)
                {   
                    FileList.push_back(dirp->d_name);
                }
                if(s1.size() > 4 && s1.compare(s1.size()-4,s1.size(),".mpg") == 0)
                {   
                    FileList.push_back(dirp->d_name);
                }
                if(IsDirectory(s))
                { 
                    FileList.push_back(dirp->d_name);
                } 
                delete s; 
        }      
}

void MyApplication::ShowItem(PmpListBox *ListBox)
{      
       PG_ListBoxItem *item;
       for(int i = 0; i < FileList.size(); i++)
       {          
                  item = new PG_ListBoxItem(MyListBox,20,"");
                  char A[256] = ""; 
                  for(int t = 0 ; t < FileList[i].size(); ++t)
                  {
                            A[t] = FileList[i][t];
                  }
                  if( strcmp(A,".") != 0 && strcmp(A,"..") != 0)
                  {      
                         item->SetIcon("1.gif"); 
                         item->SetTextFormat("%s",A);
                  }
                  else
                  {      
                         item->SetIcon("3.gif"); 
                         item->SetTextFormat("%s",A);
                  }

       }
       MyListBox->SelectFirstItem();
}

bool MyApplication::IsDirectory(char *FilePath)
{
    struct stat buf;
    lstat(FilePath,&buf);
    if(S_ISDIR(buf.st_mode))
    {
          return true;
    }
    return false;
}