entry.c

用GTK在 Linux 下写的一个模拟小键盘

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>

static 	GtkWidget *entry1;
GtkWidget *win;
const gchar *text_entry;
gchar number[8];
guint count=0;
char *strin[16] = {"1","2","3","＋","4","5","6","－","7","8","9","Back","0","●","Del","Enter"};

void clear_all (void) //消除所有相关标记
{	
    gint i;
    count=0;
   // gtk_entry_set_text (GTK_ENTRY (entry),""); //消除单行输入控件标记
    for (i = 0; i < 100; i++) //消除保存的数字
    {
        number[i] = '\0';
    }
    gtk_entry_set_text(GTK_ENTRY(entry1),"");
} 

void CountChange(  )
{
    if (strchr(number,0x2E))
    {
        count--;
        fprintf(stderr,"%d\n",count);
        return;
    }
    else
    {
        char *p=strchr(number,0x30);
        if(p == "1" )
        {   // 第一位是小数点
            if(count<1)
            {
                return;
            }
            count=0;
            if(strchr(text_entry,'-'))
            {
                gtk_entry_set_text(GTK_ENTRY(entry1),"-");
            }
            else
            {
                gtk_entry_set_text(GTK_ENTRY(entry1),"");
            }
            memset(number,0,8);
            fprintf(stderr,"%d\n",count);
            return;
        }     
        else
        {
            if(count<1)
            {
                return;
            }
            count = strlen(number);
            fprintf(stderr,"%d\n",count);
            return;
        }
    }    
}

void on_back_clicked(GtkButton *button,  gpointer data)
{
    // const gchar *text_entry;
    gchar number1[8]={0};

    text_entry = gtk_entry_get_text(GTK_ENTRY(entry1));

    if(*text_entry == '-')
    {
        if(strlen(text_entry)==1)
        {
            gtk_entry_set_text(GTK_ENTRY(entry1),"");
        }
        else
        {
            g_strlcpy(number1,number,strlen(number));
            g_strlcpy(number,number1,strlen(number1)+1);
            gtk_entry_set_text(GTK_ENTRY(entry1),number);
            gtk_entry_prepend_text (GTK_ENTRY (entry1), "-");
            CountChange();    
        }
    }
    else
    {
        g_strlcpy(number1,number,strlen(number));
        g_strlcpy(number,number1,strlen(number1)+1);
        gtk_entry_set_text(GTK_ENTRY(entry1),number);
        CountChange();    
    }
}

void on_num_clicked (GtkButton *button, gpointer data)
{ //当数字键按下时执行
    const gchar *num,*Floatnum;
    gint i;
    gchar number1[8]={0},panduan[8]={0};
    num = gtk_button_get_label (GTK_BUTTON (button));  //取数

    //  g_strlcat (number, num, 8);  //保存
    if(number[0]!= 0)
    {
        // if( !(strchr(num,0x30)) )
        // {   // 数不是0
        if (count == 4)
        {
            return; //够4位则不能在输入数字*/
        }
        count++;
        g_strlcat (number, num, 8);  //保存
        gtk_entry_append_text (GTK_ENTRY (entry1), num);  //显示   
        //  }
    }
    else
    {   // 第一个数是0
        if(strchr(num,0x30))
        {   // 第二个数是0
            if(count<1)
            {
                gtk_entry_append_text (GTK_ENTRY (entry1),"0");  //显示
                count=4;
            }
        }
        else
        {
            count=strlen(number);
            if(count == 4)
            {
                return;
            }
            count++;
            number[0]=0x00; 
            g_strlcat (number, num, 8);  //保存
            if(number[0]==0)
            {
                Floatnum = gtk_entry_get_text(GTK_ENTRY(entry1));
                g_strlcpy(panduan,Floatnum,8);
                if(panduan[0]=='-')
                {
                    g_strlcpy(number1,number,strlen(number));
                    g_strlcpy(number,number1,strlen(number1)-1);
                    gtk_entry_set_text(GTK_ENTRY(entry1),number);
                    gtk_entry_prepend_text (GTK_ENTRY (entry1), "-");
                }    
            }
            else
            {
                Floatnum = gtk_entry_get_text(GTK_ENTRY(entry1));
                g_strlcpy(panduan,Floatnum,8);
                if(panduan[0]=='-')
                {
                    gtk_entry_set_text(GTK_ENTRY(entry1),number);
                    gtk_entry_prepend_text (GTK_ENTRY (entry1), "-");
                }
                else
                {
                    gtk_entry_set_text(GTK_ENTRY(entry1),number);
                }
            }
        }
    }
}

void on_dot_clicked (GtkButton *button,  gpointer data)
{ //当小数点按下时
    gint i = 0;
    gchar panduan[8] = {0};
    for(i = 0;i<8;i++)
    {
        if(number[i] == '.')
            return;  //如果无小数点则可以
    }
    const gchar *text_entry;
    text_entry = gtk_entry_get_text(GTK_ENTRY(entry1));
    g_strlcpy(panduan,text_entry,8);
    if (*number == 0) //如果小数点前没有数字则补0
    {
        count = 2;
        g_strlcat (number, "0.", 8);
        gtk_entry_set_text (GTK_ENTRY (entry1), number);
        if(panduan[0] == '-')
        {
            gtk_entry_prepend_text (GTK_ENTRY (entry1), "-");
        }     
    }
    else
    {
        count = 2;
        g_strlcat (number, ".", 8);
        gtk_entry_set_text (GTK_ENTRY (entry1), number);
        if(panduan[0] == '-')
        {
            gtk_entry_prepend_text (GTK_ENTRY (entry1), "-");
        }     
    }
}

void on_clear_clicked (GtkButton *button, gpointer data)
{
    clear_all ();  //全部清除
}

void on_symbol_clicked (GtkButton *button, gpointer data)
{ //当按钮 ＋，－按下时
    
    const gchar *symbol;
    const gchar *fuhao;

    fuhao = gtk_entry_get_text(GTK_ENTRY(entry1));

	//fuhao = gtk_button_get_label(button);
  switch (GPOINTER_TO_INT (data))
    {
    case 1:  //"+"
        if(*fuhao == '-')
            gtk_entry_set_text (GTK_ENTRY (entry1), number);
        break;

    case 2:  //"-"
        if(*fuhao != '-')
            gtk_entry_prepend_text (GTK_ENTRY (entry1), "-");
        break;
    }

}

void on_button_clicked (GtkWidget *entry, gpointer data) //当确定键按下时执行
{
    const gchar *password = gtk_entry_get_text (GTK_ENTRY (entry1));
    //g_print ("%s", password); //在终端显示输入的数字
    gtk_entry_set_text(GTK_ENTRY(entry),password);
   // g_print ("\n");
} 

/*
void on_button_clicked (GtkWidget *widget,  GtkWidget *entry ) //当确定键按下时执行
{
	
 

    gtk_entry_set_text (GTK_ENTRY (entry), number);  //显示	
    text_entry = gtk_entry_get_text (GTK_ENTRY (entry));
    printf("Entry contents: %s\n", text_entry);

    } 
    */
/*
   void on_num_clicked (GtkButton *button, gpointer data)
   {
   gchar *str;
   str = g_strdup_printf("%s%s", gtk_entry_get_text(GTK_ENTRY(data)), gtk_button_get_label(button));
   gtk_entry_set_text(GTK_ENTRY(data), str);
   g_free(str);
   }
   */
void hide_jianpan(GtkWidget *widget, gpointer data)
{
    //GtkWidget *win = GTK_WIDGET(data);
    if (GTK_IS_WIDGET(win))
    {
        gtk_widget_destroy(win);
       // g_print("\tdialog destroy\n\n");
       // gdk_color_parse("white", &color);
       // gtk_widget_modify_base(widget, GTK_STATE_NORMAL, &color);
    }
}

void jianpan(GtkWidget *entry, gpointer data)
{
    //GtkWidget *win=GTK_WIDGET(data);
    int x,y;

    if(! (GTK_IS_WIDGET(win)) )
    {
        GtkWidget *fixed;
        GtkWidget *button;
        //GtkWidget *table;
        GtkWidget *label;
        GtkWidget *image;
        GdkColor color;

        gint i = 0, j = 0;

        win = gtk_window_new(GTK_WINDOW_POPUP);
        
        gtk_widget_set_size_request (GTK_WIDGET (win), 300, 350);
        gtk_window_set_policy(GTK_WINDOW(win),FALSE,FALSE,FALSE);
        gdk_window_get_origin(entry->window,&x,&y);// 获取entry的坐标位置
        gtk_window_move(GTK_WINDOW(win),x,y+20);
        fixed = gtk_fixed_new();
        //table = gtk_table_new (5, 4, TRUE); //创建格状控件，三个参数分别是行数、列数、是否均匀分布
        //gtk_widget_set_usize (table, 260, 320); //设置控件大小
        //label = gtk_label_new("输入窗口");
        //gtk_fixed_put(GTK_FIXED(fixed),label,120,5);

        //gtk_container_add(GTK_CONTAINER(win),label);
        //gtk_container_add (GTK_CONTAINER (win), table); 
        entry1 = gtk_entry_new (); //创建单行输入控件
        gtk_entry_set_visibility (GTK_ENTRY (entry1), TRUE); //显示输入内容
        //gtk_entry_set_max_length(GTK_ENTRY(entry), 8);
       // gtk_table_attach_defaults (GTK_TABLE (table), entry1, 0, 4, 0, 1); //将控件放入table
        gtk_widget_set_usize (entry1, 298, 35);	
        gtk_fixed_put(GTK_FIXED(fixed),entry1,1,33);
        image = gtk_image_new_from_file("112.png");
        //gtk_table_attach_defaults(GTK_TABLE(table),image,0,4,0,1);
        gtk_fixed_put(GTK_FIXED(fixed),image,1,1);
        gdk_color_parse("blue", &color);
        gtk_widget_modify_bg(label,GTK_STATE_NORMAL, &color);
        clear_all();

        for(i=0; i<4; i++)
        {
            for(j=1; j<=4; j++)
            {
                button=gtk_button_new_with_label(strin[(j-1)*4+i]);		
                gtk_widget_set_usize (button, 65, 65);	
                gtk_fixed_put(GTK_FIXED(fixed),button,8+i*73,75+(j-1)*70);


                if(j==1 && i==3)
                    g_signal_connect (G_OBJECT (button), "clicked",
                        G_CALLBACK (on_symbol_clicked), (gpointer)1);

                if(j==2 && i==3)
                    g_signal_connect (G_OBJECT (button), "clicked",
                        G_CALLBACK (on_symbol_clicked), (gpointer)2);

                if(j==3 && i==3)
                    g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(on_back_clicked),entry1);

                if(j==4 && i==1)
                    g_signal_connect (G_OBJECT (button), "clicked",G_CALLBACK (on_dot_clicked),entry1);

                if(j==4 && i==2)
                    g_signal_connect (G_OBJECT (button), "clicked",G_CALLBACK (on_clear_clicked), entry1);

                if(j==4 &&i==3)
                {
                    g_signal_connect_swapped (G_OBJECT (button), "clicked",
                        G_CALLBACK (on_button_clicked), entry); 

                    gtk_signal_connect_object(GTK_OBJECT(button),"clicked",GTK_SIGNAL_FUNC(gtk_widget_destroy),GTK_OBJECT(win) );
                }

                if ( ( j<4 && i<3)  || ( j==4 && i==0) )
                    g_signal_connect (G_OBJECT (button), "clicked", G_CALLBACK (on_num_clicked),entry1);
               // gtk_table_attach(GTK_TABLE(table),button,i,i+1,j,j+1,GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 1, 1);
        
            }
        }

        gtk_container_add (GTK_CONTAINER (win), fixed); 
        gtk_widget_show_all (win);
    }
}

int main( int argc, char *argv[] )
{
    GtkWidget *window;
    GtkWidget *vbox, *hbox;
    GtkWidget *entry;
    GtkWidget *button;
    GtkWidget *check;
    gint t;

    gtk_init (&argc, &argv);
    /* 创建一个新窗口 */
    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_widget_set_size_request (GTK_WIDGET (window), 400, 500);
    gtk_window_set_title (GTK_WINDOW (window), "数字键盘输入框");
    gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
    gtk_window_set_policy(GTK_WINDOW(window),FALSE,FALSE,FALSE);
    g_signal_connect (G_OBJECT (window), "destroy", G_CALLBACK (gtk_main_quit), NULL);
    g_signal_connect_swapped (G_OBJECT (window), "delete_event", G_CALLBACK (gtk_widget_destroy), window);

    vbox = gtk_vbox_new (FALSE, 0);
    gtk_container_add (GTK_CONTAINER (window), vbox);
    gtk_widget_show (vbox);
	
    for(t=0;t<5;t++)
    {
        entry = gtk_entry_new ();
        gtk_entry_set_max_length (GTK_ENTRY (entry), 8);
        gtk_box_pack_start (GTK_BOX (vbox), entry, TRUE, TRUE, 0);
	/* */
        g_signal_connect(entry,"button_press_event",G_CALLBACK(hide_jianpan),entry1);	
        g_signal_connect(entry, "button_press_event", G_CALLBACK (jianpan), entry1);
    }
    
    hbox = gtk_hbox_new (FALSE, 0);
    gtk_container_add (GTK_CONTAINER (vbox), hbox);

    button = gtk_button_new_with_label("button focus");
    gtk_box_pack_start(GTK_BOX(vbox), button, 1, 1, 5);
    gtk_widget_show(button);

    button = gtk_button_new_from_stock (GTK_STOCK_CLOSE);
    g_signal_connect_swapped (G_OBJECT (button), "clicked", G_CALLBACK (gtk_main_quit), NULL);
    gtk_box_pack_start (GTK_BOX (vbox), button, TRUE, TRUE, 0);
    GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
    gtk_widget_grab_default (button);

    gtk_widget_show_all (window);
    gtk_main();
    return 0;
}