TA tani/class/mech enshu/ X Window System GUI(Graphical User Interface) GUI (event driven) 2 Gtk

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1 TA tani/class/mech enshu/ X Window System GUI(Graphical User Interface) GUI (event driven) 2 Gtk+ GUI 2.1 GUI GUI GUI (event driven) GUI GUI GUI GUI GUI GUI (widget ) GUI Gtk+ GUI Gtk+ GUI

2 2 Gtk+ GUI 2.2 Gtk GUI sample1.c Web (http://www.cyber.t.u-tokyo.ac.jp/ tani/class/mech enshu/) enshu2010gui1.tar.gz % tar xvzf enshu2011gui.

2 2 2 Gtk+ GUI 2.2 Gtk GUI sample1.c Web ( tani/class/mech enshu/) enshu2010gui1.tar.gz % tar xvzf enshu2011gui.tar.gz % cd 2011gui % make sample1 1 1 sample1.c Gtk+ Gtk+ gtk.h sample1.c 12 #include<gtk/gtk.h> gtk.h Gtk+ * 1 54 Gtk ( ) Gtk *1 gtk.h gtk.h

3 2.3 3 int main (int argc, char* argv[]) { { gtk_set_local(); /* */ gtk_init(&argc, &argv); /* */ gtk_get_rc_parse(" "); /* Gtk */... } sample1.c gtk_init() argv Gtk gtk_init() Gtk+ GUI ( ) GUI ( ) ( ) GUI Gtk+ GUI GtkWidget gtk_widget_show() gtk_widget_show() gtk_widget_show() GUI Gtk 125 gtk_main() gtk_main() main() 2.3 Gtk+ 3 window Gtk+ sample1.c 67 69

4 4 2 Gtk+ GUI /* */ GtkWidget *window; /* window */ window = gtk_window_new(gtk_window_toplevel); /* */ gtk_window_set_title(gtk_window(window), " "); /* */ gtk_container_border_width(gtk_container(window), 10); label label label /* */ GtkWidget *label; /* label */ label = gtk_label_new(" "); sample3.c label label gtk_label_set(gtk_label(label), " "); button /* */ GtkWidget *button; /* button */ button = gtk_button_new_with_label(" ");

5 GUI OS Gtk+ ( ) 2 gint gtk_signal_connect( GtkObject *object, gchar *name, GtkSignalFunc func, gpointer func_data ); object : GTK ( ) name : func : func_data : void callback_func( GtkWidget *widget, gpointer data ); widget : data : gint gtk_signal_connect_object( GtkObject *object, gchar *name, GtkSignalFunc func, GtkObject *slot_object ); object : GTK ( ) name : func : slot_object : func GTK

6 6 2 Gtk+ GUI void callback_func( GtkWidget *widget ); widget : gtk_signal_connect() gtk_signal_connect_object() 1 1 pressed released clicked enter leave Gtk+ sample1.c counter 1 1. sample1.c. 2. sample1.c button

7 GUI GUI Gtk+ GUI Gtk+ (= ) 3 4 gtk_hbox_new() gtk_box_pack_start() gtk_box_pack_end() gtk_vbox_new() gtk_box_pack_start() gtk_box_pack_end()

8 sample2.c C( ) ( 5) 2. (+,-,*,/) 3. ( ) sample3.c sample3

3.2 9 3 1. sample3.c 2. sample3.c image_proportion() 6 3.

2 PNG, JPEG, TIFF, BMP, GIF PNM(Portable anymap)

9 sample3.c 2. sample3.c image_proportion() 6 3. sample3.c image_skew() 7 4. sample3.c image_radial() 8 ( ) image_processing() image_processing() PNG, JPEG, TIFF, BMP, GIF PNM(Portable anymap) PGM(Portable Grayscale Map) PPM(Portable Pixel Map) P x y ( RGB )... PGM

10 10 3 P ( )... 1 P5 P6 P5 P pixel 255 pixel bit(=1 byte) 1pixel 1byte 1pixel RGB 8bit 3byte 3.3 GTK GDK (GIMP Drawing Kit) GDK (X Window system XLib ) (Wrapper) GDK DrawingArea 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()

11 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 ); 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

12 12 3 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 + 1] (B) = rgb_buf[j*rowstride + i*3 + 2] 3.4 GUI / entry scale entry entry entry /* */ 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()

13 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 /* */ GtkObject *adjustment; GtkWidget *scale; /* adjustment */ adjustment = gtk_adjustment_new(0, 0, 255, 1, 1, 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

$14 3 void on_slider_moved(gtkwidget * widget, GtkAdjustment *adj) { int scale_value; }$

14 14 3 void on_slider_moved(gtkwidget * widget, GtkAdjustment *adj) { int scale_value; } scale_value = adj->value; 4 1. sample4.c sample4.c load_pgm() 9 lena.pgm 2. entry 9 9 4

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