2 2 GtkWidget* gtk_drawing_area_new ( void ); /* / void gtk_drawing_area_size ( GtkDrawingArea darea, gint width, gint height); realize size allocat

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1 200 B3 GUI TA tani/class/mech enshu/ X Window System GUI(Graphical User Interface) GUI (event driven) C GUI(Graphical User Interface) X Window System GUI GUI 2 GUI GUI 2. ( ) GTK GDK (GIMP Drawing Kit) GDK (X Window system XLib ) (Wrapper) GDK DrawingArea

2 2 2 GtkWidget* gtk_drawing_area_new ( void ); /* */ void gtk_drawing_area_size ( GtkDrawingArea *darea, gint width, gint height); realize size allocate expose event RGB ( ) GDK GdkRgb GdkRgb gdk_rgb_init() core (GtkPreview ) GdkRgb GTK+ (class_init) gdk_rgb_init() GdkRgb void gdk_rgb_init (void); void gdk_draw_rgb_image ( GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *rgb_buf, gint rowstride );

3 2.2 ( ) 3 void gdk_draw_gray_image ( GdkDrawable *drawable, GdkGC *gc, gint x, gint y, gint width, gint height, GdkRgbDither dith, guchar *buf, gint rowstride ); drawable : GdkDrawable ( GdkWindow) gc : ( GDK ) x : drawable X y : drawable Y width : height : dith : GdkRgbDither rgb_buf : Packed24 (Packed : Depth ) rowstride : rgb_buf gdk_draw_rgb_image () Drawable RGB gdk_draw_gray_image () Drawable rowstride 0 <= i < width 0 <= j < height pixel(x+i, y+j) (R) = rgb_buf[j*rowstride + i*3] (G) = rgb_buf[j*rowstride + i*3 + ] (B) = rgb_buf[j*rowstride + i*3 + 2] 2.2 ( ) GUI / entry scale entry entry entry

4 4 2 /* */ GtkWidget *entry; /* entry */ entry = gtk_entry_new_with_max_length (50); entry gchar *entry_text; entry_text = gtk_entry_get_text (GTK_ENTRY(entry)); scale entry GUI scale scale scale adjustment adjustment gtk_adjustment_new() GtkObject* gtk_adjustment_new ( gfloat value, gfloat lower, gfloat upper, gfloat step_increment, gfloat page_increment, gfloat page_size ); value : lower : upper : step_increment : page_increment : page_size : upper upper - page_size scale adjustment

5 2.3 5 /* */ GtkObject *adjustment; GtkWidget *scale; /* adjustment */ adjustment = gtk_adjustment_new(0, 0, 255,,, 0); /* on_slider_moved() */ gtk_signal_connect(gtk_object(adjustment), "value_changed", GTK_SIGNAL_FUNC(on_slider_moved), adjustment); /* scale adjustment */ scale = gtk_vscale_new(gtk_adjustment(adjustment)); /* */ gtk_scale_set_digits(gtk_scale(scale), 0); scale void on_slider_moved(gtkwidget * widget, GtkAdjustment *adj) { int scale_value; } scale_value = adj->value; 2.3 T T 0 (binarization). x x f y = f(x) [x m in, x m ax]

6 6 2 x max x y = y max x min x < x max y = y max y min x max x min (x x min ) + y min x < x min y = y min ymax ymin xmin xmax ( ) ( ) 3 3 f(i, j) g(i, j) (i, j) g(i, j) = f(i + m, j + n) m= n=

7 2.4 7 Sobel Sobel ( 2) 3 3 f(i, j) 2 2 f(i, j) {f(i +, j) f(i, j)} {f(i, j) f(i, j)} i2 2 f(i, j) {f(i, j + ) f(i, j)} {f(i, j) f(i, j )} j2 2 2 f(i, j) + f(i, j) i2 j2 3 3

8 8 2 2 (A),(B) ( ) (B) ( ) 2. sample5.c scale 3 2. sample5.c image_filter() Sobel ( ) 4. ( )

9 3 GUI GUI ( ) GUI 3. ( 5) 5

10 0 3 ID ID 3.2 struct two_args { int arg; int arg2; }; void *needs_2_args(void *); void a() { pthread_t t; struct two_args *ap; } ap = (struct two_args *)malloc(sizeof (struct two_args)); ap->arg = ; ap->arg2 = 2; error = pthread_create(&t, NULL, needs_2_args, (void *) ap);... void *needs_2_args(void *ap) { struct two_args *argp = (struct two_args *)ap; int a, a2; } a = argp->arg; a2 = argp->arg2; free(argp);

11 3.4 ( 5) GUI ( 6, 8) 6 GUI Kbyte byte

12 2 3 8 read write () 256byte write 00 56byte socket read() socket write() 3.5 GUI Gtk+ GUI (= ) GUI 8 entry box entry main box text view entry box ( ) Client main_box text_view entry_msg button_send entry_box

13 text chat server text chat client GUI client server.c TODO. 2. client.c TODO 7, 8 3.

14 4 4 GUI ( ) 4 GUI ( ) 4.,,, 2 0) (),,, (,, ),.,. 0 Linux ( ) 2.,. 4 3 (rock). ) ( 2, 3)

15 4. 5 Battleship B 4 Cruiser C 3 2 Destroyer D 2 3 Submarine S 4 3 client server.c TODO. 2. client.c TODO, 2, 3

16 6 4 GUI ( ) 2 3

2 2 Gtk+ GUI (widget ) GUI Gtk+ GUI Gtk+ GUI 2.2 Gtk GUI sample1.c Web (http://www.cyber.t.u-tokyo.ac.jp/ tani/class/mech enshu/) enshu2009gui1.tar.gz

2 2 Gtk+ GUI (widget ) GUI Gtk+ GUI Gtk+ GUI 2.2 Gtk GUI sample1.c Web (http://www.cyber.t.u-tokyo.ac.jp/ tani/class/mech enshu/) enshu2009gui1.tar.gz 1 2009 B4 GUI TA http://www.cyber.t.u-tokyo.ac.jp/ tani/class/mech enshu/ 2008 6 11 1 1 1 4 C GUI(Graphical User Interface) X Window System GUI 5 GUI 2 Gtk+ GUI 2.1 GUI GUI GUI (event driven) GUI GUI GUI