spinbutton.c

《Linux程序设计权威指南》源代码

	/* File: spinbutton.c */

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

	static GtkWidget *spinner1;

	void toggle_snap( GtkWidget *widget, GtkSpinButton *spin )
	{
		gtk_spin_button_set_snap_to_ticks (spin, 
			GTK_TOGGLE_BUTTON (widget)->active);
	}

	void toggle_numeric( GtkWidget *widget, GtkSpinButton *spin )
	{
		gtk_spin_button_set_numeric (spin, 
			GTK_TOGGLE_BUTTON (widget)->active);
	}

	void change_digits( GtkWidget *widget, GtkSpinButton *spin )
	{
		gtk_spin_button_set_digits (GTK_SPIN_BUTTON (spinner1),
			gtk_spin_button_get_value_as_int (spin));
	}

	void get_value( GtkWidget *widget, gpointer data )
	{
		gchar buf[32];
		GtkLabel *label;
		GtkSpinButton *spin;

		spin = GTK_SPIN_BUTTON (spinner1);
		label = GTK_LABEL(gtk_object_get_user_data(GTK_OBJECT(widget)));
		if (GPOINTER_TO_INT (data) == 1)
			sprintf (buf, "%d", 
				gtk_spin_button_get_value_as_int (spin));
		else
			sprintf (buf, "%0.*f", spin->digits,
				gtk_spin_button_get_value_as_float (spin));
		gtk_label_set_text (label, buf);
	}


	int main( int   argc, char *argv[] )
	{
		GtkWidget *window;
		GtkWidget *frame;
		GtkWidget *hbox;
		GtkWidget *main_vbox;
		GtkWidget *vbox;
		GtkWidget *vbox2;
		GtkWidget *spinner2;
		GtkWidget *spinner;
		GtkWidget *button;
		GtkWidget *label;
		GtkWidget *val_label;
		GtkAdjustment *adj;

		//初始化
		gtk_set_locale();
		gtk_init(&argc, &argv);

		window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
		gtk_signal_connect (GTK_OBJECT (window), "destroy",
			GTK_SIGNAL_FUNC (gtk_main_quit), NULL);

		gtk_window_set_title (GTK_WINDOW (window), "Spin Button");

		main_vbox = gtk_vbox_new (FALSE, 5);
		gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 10);
		gtk_container_add (GTK_CONTAINER (window), main_vbox);
   
		frame = gtk_frame_new ("Not accelerated");
		gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
   
		vbox = gtk_vbox_new (FALSE, 0);
		gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
		gtk_container_add (GTK_CONTAINER (frame), vbox);
   
		//年月日按钮 
		hbox = gtk_hbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 5);
   
		vbox2 = gtk_vbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);
  		 
		label = gtk_label_new ("日:");
		gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
		gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);
  		 
		adj = (GtkAdjustment *) gtk_adjustment_new (1.0, 1.0, 31.0, 1.0,
                                               		5.0, 0.0);
		spinner = gtk_spin_button_new (adj, 0, 0);
		gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner), TRUE);
		gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinner),
                                 		GTK_SHADOW_OUT);
		gtk_box_pack_start (GTK_BOX (vbox2), spinner, FALSE, TRUE, 0);
  		 
		vbox2 = gtk_vbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);
		
		label = gtk_label_new ("月:");
		gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
		gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);
		
		adj = (GtkAdjustment *)gtk_adjustment_new (1.0, 1.0, 12.0, 1.0,
				5.0, 0.0);
		spinner = gtk_spin_button_new (adj, 0, 0);
		gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner), TRUE);
		gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinner),
			GTK_SHADOW_ETCHED_IN);
		gtk_box_pack_start (GTK_BOX (vbox2), spinner, FALSE, TRUE, 0);
  		 
		vbox2 = gtk_vbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);
		
		label = gtk_label_new ("年:");
		gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
		gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);
		
		adj = (GtkAdjustment *) gtk_adjustment_new (1998.0, 0.0, 2100.0,
			1.0, 100.0, 0.0);
		spinner = gtk_spin_button_new (adj, 0, 0);
		gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner), FALSE);
		gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinner),
                                 		GTK_SHADOW_IN);
		gtk_widget_set_usize (spinner, 55, 0);
		gtk_box_pack_start (GTK_BOX (vbox2), spinner, FALSE, TRUE, 0);
		
		frame = gtk_frame_new ("加速的");
		gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
		
		vbox = gtk_vbox_new (FALSE, 0);
		gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
		gtk_container_add (GTK_CONTAINER (frame), vbox);
		
		hbox = gtk_hbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 5);
		
		vbox2 = gtk_vbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);
		
		label = gtk_label_new ("数值 :");
		gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
		gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);
		
		adj = (GtkAdjustment *) gtk_adjustment_new (0.0, 
			-10000.0, 10000.0, 0.5, 100.0, 0.0);
		spinner1 = gtk_spin_button_new (adj, 1.0, 2);
		gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner1), TRUE);
		gtk_widget_set_usize (spinner1, 100, 0);
		gtk_box_pack_start (GTK_BOX (vbox2), spinner1, FALSE, TRUE, 0);
		
		vbox2 = gtk_vbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (hbox), vbox2, TRUE, TRUE, 5);
		
		label = gtk_label_new ("数字 :");
		gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
		gtk_box_pack_start (GTK_BOX (vbox2), label, FALSE, TRUE, 0);
		
		adj = (GtkAdjustment *) gtk_adjustment_new (2, 1, 5, 1, 1, 0);
		spinner2 = gtk_spin_button_new (adj, 0.0, 0);
		gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spinner2), TRUE);
		gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
                    		GTK_SIGNAL_FUNC (change_digits),
                    		(gpointer) spinner2);
		gtk_box_pack_start (GTK_BOX (vbox2), spinner2, FALSE, TRUE, 0);
		
		hbox = gtk_hbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 5);
		
		button = gtk_check_button_new_with_label ("设为0.5步长");
		gtk_signal_connect (GTK_OBJECT (button), "clicked",
                    		GTK_SIGNAL_FUNC (toggle_snap),
                    		spinner1);
		gtk_box_pack_start (GTK_BOX (vbox), button, TRUE, TRUE, 0);
		gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
		
		button = gtk_check_button_new_with_label ("只输入数字模式");
		gtk_signal_connect (GTK_OBJECT (button), "clicked",
                    		GTK_SIGNAL_FUNC (toggle_numeric),
                    		spinner1);
		gtk_box_pack_start (GTK_BOX (vbox), button, TRUE, TRUE, 0);
		gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
		
		val_label = gtk_label_new ("");
		
		hbox = gtk_hbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 5);
		button = gtk_button_new_with_label ("整数值");
		gtk_object_set_user_data (GTK_OBJECT (button), val_label);
		gtk_signal_connect (GTK_OBJECT (button), "clicked",
                    		GTK_SIGNAL_FUNC (get_value),
                    		GINT_TO_POINTER (1));
		gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);
		
		button = gtk_button_new_with_label ("小数值");
		gtk_object_set_user_data (GTK_OBJECT (button), val_label);
		gtk_signal_connect (GTK_OBJECT (button), "clicked",
                    		GTK_SIGNAL_FUNC (get_value),
                    		GINT_TO_POINTER (2));
		gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);
		
		gtk_box_pack_start (GTK_BOX (vbox), val_label, TRUE, TRUE, 0);
		gtk_label_set_text (GTK_LABEL (val_label), "0");
		
		hbox = gtk_hbox_new (FALSE, 0);
		gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, TRUE, 0);
		
		button = gtk_button_new_with_label ("关闭");
		gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
                           		GTK_SIGNAL_FUNC (gtk_widget_destroy),
                           		GTK_OBJECT (window));
		gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 5);
		
		gtk_widget_show_all (window);
		
		gtk_main ();
    		 
		return(0);
	}