#include <config.h>
#include <gtk/gtk.h>
+#include <gtk/gtkgl.h>
+#include <gdk/gdkkeysyms.h>
-static void hello(GtkWidget *widget, gpointer data)
+#include "cube.h"
+
+static void destroy(GtkWidget *widget, gpointer data)
{
- g_print("Hello World\n");
+ gtk_main_quit();
}
static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data)
{
- g_print("delete event occurred\n");
+ destroy(widget, data);
return FALSE;
}
-static void destroy(GtkWidget *widget, gpointer data)
+static gboolean key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
- gtk_main_quit();
+ if (event->keyval == GDK_q)
+ destroy(widget, data);
}
int main(int argc, char *argv[])
{
- GtkWidget *window;
- GtkWidget *button;
gtk_init(&argc, &argv);
+ gtk_gl_init(&argc, &argv);
+
+ /* Set up window */
+ GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+ gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
+ g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(delete_event), NULL);
+ g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(delete_event), NULL);
+ g_signal_connect(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press), NULL);
+
+ /* Set up layout */
+ GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
+ gtk_container_add(GTK_CONTAINER(window), vbox);
- window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
- g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(delete_event), NULL);
- g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy), NULL);
+ /* Set up menu bar */
+ GtkWidget *menu = gtk_menu_bar_new();
+ GtkWidget *menu_file = gtk_menu_item_new_with_label("File");
+ GtkWidget *menu_file_menu = gtk_menu_new();
+ GtkWidget *menu_file_menu_quit = gtk_menu_item_new_with_label("Quit");
+ gtk_box_pack_start(GTK_BOX(vbox), menu, FALSE, FALSE, 0);
+ gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_file);
+ gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_file), menu_file_menu);
+ gtk_menu_shell_append(GTK_MENU_SHELL(menu_file_menu), menu_file_menu_quit);
+ g_signal_connect(G_OBJECT(menu_file_menu_quit), "activate", G_CALLBACK(destroy), NULL);
- gtk_container_set_border_width(GTK_CONTAINER(window), 10);
- button = gtk_button_new_with_label("Hello World");
- g_signal_connect( G_OBJECT(button), "clicked", G_CALLBACK(hello), NULL);
- g_signal_connect_swapped(G_OBJECT(button), "clicked", G_CALLBACK(gtk_widget_destroy), G_OBJECT(window));
+ /* Set up darwing area */
+ GtkWidget *drawing = gtk_drawing_area_new();
+ gtk_box_pack_start(GTK_BOX(vbox), drawing, TRUE, TRUE, 0);
+ //gtk_widget_set_events(drawing, GDK_EXPOSURE_MASK); // needed?
+ GdkGLConfig *glconfig = gdk_gl_config_new_by_mode(GDK_GL_MODE_RGB | GDK_GL_MODE_DEPTH | GDK_GL_MODE_DOUBLE);
+ if (!glconfig) g_assert_not_reached();
+ if (!gtk_widget_set_gl_capability(drawing, glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE)) g_assert_not_reached();
+ g_signal_connect(drawing, "configure-event", G_CALLBACK(configure), NULL);
+ g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), NULL);
+ g_timeout_add(1000/60, rotate, drawing);
- gtk_container_add(GTK_CONTAINER(window), button);
- gtk_widget_show(button);
- gtk_widget_show(window);
+ gtk_widget_show_all(window);
gtk_main();
return 0;
--- /dev/null
+#include <config.h>
+#include <gtk/gtk.h>
+#include <gtk/gtkgl.h>
+#include <gdk/gdkkeysyms.h>
+#include <GL/gl.h>
+#include <math.h>
+
+float boxv[][3] = {
+ { -0.5, -0.5, -0.5 },
+ { 0.5, -0.5, -0.5 },
+ { 0.5, 0.5, -0.5 },
+ { -0.5, 0.5, -0.5 },
+ { -0.5, -0.5, 0.5 },
+ { 0.5, -0.5, 0.5 },
+ { 0.5, 0.5, 0.5 },
+ { -0.5, 0.5, 0.5 }
+};
+#define ALPHA 0.5
+
+static float ang = 30.;
+
+gboolean expose (GtkWidget *da, GdkEventExpose *event, gpointer user_data)
+{
+ GdkGLContext *glcontext = gtk_widget_get_gl_context (da);
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (da);
+
+ // g_print (" :: expose\n");
+
+ if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
+ {
+ g_assert_not_reached ();
+ }
+
+ /* draw in here */
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glPushMatrix();
+
+ glRotatef (ang, 1, 0, 1);
+
+ glShadeModel(GL_FLAT);
+
+ glBegin (GL_LINES);
+ glColor3f (1., 0., 0.);
+ glVertex3f (0., 0., 0.);
+ glVertex3f (1., 0., 0.);
+ glEnd ();
+
+ glBegin (GL_LINES);
+ glColor3f (0., 1., 0.);
+ glVertex3f (0., 0., 0.);
+ glVertex3f (0., 1., 0.);
+ glEnd ();
+
+ glBegin (GL_LINES);
+ glColor3f (0., 0., 1.);
+ glVertex3f (0., 0., 0.);
+ glVertex3f (0., 0., 1.);
+ glEnd ();
+
+ glBegin(GL_LINES);
+ glColor3f (1., 1., 1.);
+ glVertex3fv(boxv[0]);
+ glVertex3fv(boxv[1]);
+
+ glVertex3fv(boxv[1]);
+ glVertex3fv(boxv[2]);
+
+ glVertex3fv(boxv[2]);
+ glVertex3fv(boxv[3]);
+
+ glVertex3fv(boxv[3]);
+ glVertex3fv(boxv[0]);
+
+ glVertex3fv(boxv[4]);
+ glVertex3fv(boxv[5]);
+
+ glVertex3fv(boxv[5]);
+ glVertex3fv(boxv[6]);
+
+ glVertex3fv(boxv[6]);
+ glVertex3fv(boxv[7]);
+
+ glVertex3fv(boxv[7]);
+ glVertex3fv(boxv[4]);
+
+ glVertex3fv(boxv[0]);
+ glVertex3fv(boxv[4]);
+
+ glVertex3fv(boxv[1]);
+ glVertex3fv(boxv[5]);
+
+ glVertex3fv(boxv[2]);
+ glVertex3fv(boxv[6]);
+
+ glVertex3fv(boxv[3]);
+ glVertex3fv(boxv[7]);
+ glEnd();
+
+ glPopMatrix ();
+
+ if (gdk_gl_drawable_is_double_buffered (gldrawable))
+ gdk_gl_drawable_swap_buffers (gldrawable);
+
+ else
+ glFlush ();
+
+ gdk_gl_drawable_gl_end (gldrawable);
+
+ return TRUE;
+}
+
+gboolean configure(GtkWidget *da, GdkEventConfigure *event, gpointer user_data)
+{
+ GdkGLContext *glcontext = gtk_widget_get_gl_context (da);
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (da);
+
+ if (!gdk_gl_drawable_gl_begin (gldrawable, glcontext))
+ {
+ g_assert_not_reached ();
+ }
+
+ glLoadIdentity();
+ glViewport (0, 0, da->allocation.width, da->allocation.height);
+ glOrtho (-10,10,-10,10,-20050,10000);
+ glEnable (GL_BLEND);
+ glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ glScalef (10., 10., 10.);
+
+ gdk_gl_drawable_gl_end (gldrawable);
+
+ return TRUE;
+}
+
+gboolean rotate (gpointer user_data)
+{
+ GtkWidget *da = GTK_WIDGET (user_data);
+
+ ang++;
+
+ gdk_window_invalidate_rect (da->window, &da->allocation, FALSE);
+ gdk_window_process_updates (da->window, FALSE);
+
+ return TRUE;
+}