X-Git-Url: https://git.cworth.org/git?p=wordgame;a=blobdiff_plain;f=rack-fancy.c;h=8fc516f41788f87d828264afda97b08e37041b3c;hp=14c8d70fa8b55c3f0e47f4c13a3c2cc70b69cc78;hb=169f626b0c71bc2cc5f7929ffa4b986e0acfee2a;hpb=1478e50ab9b22ef50fb0a1be0d77a5f532eb7bd8

diff --git a/rack-fancy.c b/rack-fancy.c
index 14c8d70..8fc516f 100644
--- a/rack-fancy.c
+++ b/rack-fancy.c
@@ -21,6 +21,7 @@
 #include <sys/time.h>
 #include <time.h>
 #include <ctype.h>
+#include <math.h>
 
 #include "word-game.h"
 #include "demo-item.h"
@@ -56,13 +57,59 @@ create_window (void)
     return scrolled_window;
 }
 
+#define MAX_LETTERS 7
+static GooCanvasItem *letter_items[MAX_LETTERS];
+static int num_letters;
+
+static int
+rand_within (int num_values)
+{
+    return (int) ((double) num_values * (rand() / (RAND_MAX + 1.0)));
+}
+
+static void
+shuffle (int *array, int length)
+{
+    int i, r, tmp;
+
+    for (i = 0; i < length; i++)
+    {
+	r = i + rand_within (length - i);
+	tmp = array[i];
+	array[i] = array[r];
+	array[r] = tmp;
+    }
+}
+
+#define LETTER_SIZE 60
+#define LETTER_PAD 5
+
+static void
+get_letter_position (int i, int *x, int *y)
+{
+    *x = 20 + i * (LETTER_SIZE + LETTER_PAD);
+    *y = 20;
+}
+
 static gboolean
 on_button_press (GooCanvasItem  *item,
 		 GooCanvasItem  *target,
 		 GdkEventButton *event,
 		 gpointer        data)
 {
-    g_print ("demo item received button press event\n");
+    int indices[MAX_LETTERS];
+    int i, x, y;
+
+    for (i = 0; i < num_letters; i++)
+	indices[i] = i;
+
+    shuffle (indices, num_letters);
+
+    for (i = 0; i < num_letters; i++) {
+	get_letter_position (indices[i], &x, &y);
+	goo_demo_item_move_to (letter_items[i], x, y);
+    }
+
     return TRUE;
 }
 
@@ -70,10 +117,9 @@ static void
 create_canvas (GtkWidget *parent, char *word)
 {
     GtkWidget *canvas;
-    GooCanvasItem *root, *letter;
+    GooCanvasItem *root;
     int i;
-    int item_size = 60;
-    int item_pad = 5;
+    int x, y;
 
     canvas = goo_canvas_new ();
     gtk_widget_set_size_request (canvas, 400, 400);
@@ -83,16 +129,20 @@ create_canvas (GtkWidget *parent, char *word)
 
     root = goo_canvas_get_root_item (GOO_CANVAS (canvas));
 
-    for (i = 0; i < strlen (word); i++) {
-	letter = goo_demo_item_new (root,
-				    30 + i * (item_size + item_pad), 20,
-				    item_size, item_size,
-				    word[i],
-				    NULL);
+    for (i = 0; i < MIN (MAX_LETTERS, strlen (word)); i++) {
+	get_letter_position (i, &x, &y);
+	letter_items[i] = goo_demo_item_new (root,
+					     x, y,
+					     LETTER_SIZE,
+					     word[i],
+					     NULL);
 
-	g_signal_connect (letter, "button_press_event",
+	g_signal_connect (letter_items[i], "button_press_event",
 			  (GtkSignalFunc) on_button_press, NULL);
     }
+    num_letters = i;
+    while (i < MAX_LETTERS)
+	letter_items[i] = NULL; 
 }
 
 int