GtkGtk MarriesMarries AdaAda:: TheThe GUIGUI TechnologyTechnology RevolutionRevolution

[email protected] OverviewOverview

History of GtkAda

GtkAda Features

Why Gtk Rather Than Other Toolkits?

Why GtkAda rather than Gtk+? GtkAdaGtkAda -- HistoryHistory

á The GIMP

– GNU Photoshop clone

á The Gtk+ library

– Becomes independent

á GtkGlade: a Gtk+ GUI builder

á Gnome: a desktop manager

á GVD: the GNU Visual Debugger GtkAdaGtkAda FeaturesFeatures

ááHigh-level binding to the Gtk+ library – object-oriented – type safety – small and efficient ááHighly portable – Unixes: Linux, Solaris, … – Windows NT ááNative GtkAdaGtkAda FeaturesFeatures (2)(2)

ááEvent handling

ááDrawing services

– Lines, rectangles, …

– OpenGL (3D graphics)

ááStyle support

ááLarge set of widgets GtkAdaGtkAda -- WidgetWidget setset

á Two types of widgets – containers and visual objects

á About 100 widgets are provided

á High-level widgets – notebook, text widget, tree, spin button, table, toolbar, ... GtkAdaGtkAda -- ScreenshotsScreenshots

á Ctree GtkAdaGtkAda -- ScreenshotsScreenshots (2)(2)

á OpenGL WhyWhy Gtk+?Gtk+?

á Portable

á Native

á Extensible

á Open Source

á Actively developped

á Thread-safe WhyWhy Gtk+?Gtk+? (2)(2)

á High level widgets

á Easy to use scrolling capabilities

á Wide range of users

á Very powerful layout capabilities

– Complete set of containers

á Powerful and easy to use GUI builder

á Easy to bind TheThe GUIGUI BuilderBuilder

ááMulti-language GUI builder – Language-independent save file (XML). – Code-generation specific to each language. – Dynamic loading of XML files WhyWhy GtkAda?GtkAda?

á Compile time checks

á Real Object Oriented hierarchy

á Code readability

á Group most popular Gtk widgets

á Can create new types and extend widgets

á More extensive documentation GtkAdaGtkAda vsvs Gtk+:Gtk+: ExampleExample

#include with Gtk.Main; use Gtk.Main; #include withwithGtk.Button;Gtk.Main; useuseGtk.Button;Gtk.Main; *HQHULFZLGJHW withwithGtk.Window;Gtk.Button; useuseGtk.Window;Gtk.Button; void main (int argc, 7\SHG:LGJHWwithwithGtk.Enums;Gtk.Window; useuseGtk.Enums;Gtk.Window; void main (charint *argv[])argc, with Gtk.Enums; use Gtk.Enums; { char *argv[]) procedure Hello is {GtkWidget *window; procedureWindow :Hello Gtk_Window; is GtkWidgetGtkWidget *button;*window;8QLTXHQDPHVSDFH ButtonWindow :8VHFODXVHV: Gtk_Button;Gtk_Window; GtkWidget *button; beginButton : Gtk_Button; gtk_init (&argc, &argv); beginInit; windowgtk_init = gtk_window_new(&argc, &argv); (GTK_WINDOW_TOPLEVEL); Gtk_NewInit; (Window, Window_Toplevel); gtk_container_set_border_widthwindow = gtk_window_new (GTK_WINDOW_TOPLEVEL); Set_Border_WidthGtk_New (Window, (Window,Window_Toplevel); 10); gtk_container_set_border_width(GTK_CONTAINER (window), 10); Set_Border_Width (Window, 10); button(GTK_CONTAINER = gtk_button_new_with_label (window), 10); ("Hello World"); Gtk_New (Button, "Hello World"); gtk_container_addbutton = gtk_button_new_with_label (GTK_CONTAINER (window), ("Hello button);World"); AddGtk_New (Window, (Button, Button); "Hello World"); gtk_widget_show_allgtk_container_add (GTK_CONTAINER (window); (window), button); Show_AllAdd (Window,%XLOW (Window); Button);LQ22 gtk_maingtk_widget_show_all ();1RGLVSDWFKLQJ (window); Main;Show_All (Window); } gtk_main (); end Main;Hello; } end Hello; GUIGUI BuilderBuilder SupportSupport withwith GtkAdaGtkAda

ááSupport built-in

ááTakes advantage of object-oriented features. – Each widget generates its own code

ááGenerated sources – easy to read sources (generates new composite widgets) – sources can be modified and regenerated GtkAdaGtkAda:: aa completecomplete GUIGUI SolutionSolution

ááPortable ááNative ááEasy to use ááSafe ááObject Oriented ááComes with a GUI builder ááSame look-and-feel