about_message.c

来自「经典的俄罗斯方块程序」· C语言 代码 · 共 151 行

#include<gtk/gtk.h>
#include"about_message.h"
#include"main.h"

extern GdkPixbuf* image;

static MsgDInfo _drawinfo;
static MsgDInfo* drawinfo=&_drawinfo;

static gboolean
msg_configure(GtkWidget* widget,
              gpointer   data)
{
    GtkWidget* pixmap;

    drawinfo->gc=gdk_gc_new(widget->window);

    drawinfo->pixmap=gdk_pixmap_new(widget->window,
                                    330,180,-1);

    pixmap=gdk_pixmap_new(widget->window,
                          gdk_pixbuf_get_width(image),
                          gdk_pixbuf_get_height(image),
                          -1);

    
    gdk_pixbuf_render_to_drawable(image,
                                  pixmap,
                                  drawinfo->gc,
                                  0,0,0,0,
                                  gdk_pixbuf_get_width(image),
                                  gdk_pixbuf_get_height(image),
                                  GDK_RGB_DITHER_NORMAL,
                                  0,0);
    gdk_draw_rectangle(drawinfo->pixmap,
                       drawinfo->gc,
                       TRUE,0,0,
                       330,
                       180);
    
    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      30,0,120,30,
                      30,30);
    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      30,0,150,30,
                      30,30);
    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      30,0,180,30,
                      30,30);
    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      30,0,180,60,
                      30,30);

    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      60,0,150,90,
                      30,30);
    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      60,0,180,120,
                      30,30);
    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      60,0,150,120,
                      30,30);
    gdk_draw_drawable(drawinfo->pixmap,
                      drawinfo->gc,
                      pixmap,
                      60,0,120,120,
                      30,30);
    
    gtk_widget_queue_draw(widget);
    
    return TRUE;
}

static gboolean
msg_expose(GtkWidget* widget,
           gpointer   data)
{
    
    gdk_draw_drawable(widget->window,
                      drawinfo->gc,
                      drawinfo->pixmap,
                      0,0,0,0,
                      widget->allocation.width,
                      widget->allocation.height);
    
    return TRUE;
}

void
show_about_message(GtkWidget* widget,
                   gpointer   data)
{
    GtkWidget* dialog;
    GtkWidget* label;
    GtkWidget* canvas;
    GtkWidget* pixbuf;

    dialog=gtk_dialog_new_with_buttons(_("About message"),
                                       GTK_WINDOW(data),
                                       GTK_DIALOG_DESTROY_WITH_PARENT,
                                       GTK_STOCK_OK,
                                       GTK_RESPONSE_NONE,
                                       NULL);

    gtk_window_set_default_size(GTK_WINDOW(dialog),330,250);
    gtk_window_set_resizable(GTK_WINDOW(dialog),FALSE);

    canvas=gtk_drawing_area_new();
   gtk_drawing_area_size(GTK_DRAWING_AREA(canvas),
                         330,180);
   
   gtk_signal_connect(GTK_OBJECT(canvas),
                       "configure_event",
                       GTK_SIGNAL_FUNC(msg_configure),
                       drawinfo);
   gtk_signal_connect(GTK_OBJECT(canvas),
                      "expose_event",
                      GTK_SIGNAL_FUNC(msg_expose),
                      drawinfo);
   gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox),
                      canvas);

   label=gtk_label_new(_("\nAuthor:Li Xujia.\n\n\
Email:[e-mail].\n"));

       /* Ensure that the dialog box is destroyed when the user responds. */
   
   g_signal_connect_swapped(dialog,
                            "response",
                            G_CALLBACK(gtk_widget_destroy),
                            dialog);
   gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox),
                      label);
   
   gtk_widget_show_all (dialog);
}