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/* this file is part of libccc, criawips' cairo-based canvas
*
* AUTHORS
* Sven Herzberg <herzi@gnome-de.org>
*
* Copyright (C) 2005 Sven Herzberg
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "fifteen-grid.h"
#include <ccc.h>
#include "fifteen-item.h"
#include "glib-helpers.h"
#define TILE_SIZE 50.0
CcItem*
fifteen_grid_new(PangoFontDescription* desc) {
return g_object_new(FIFTEEN_TYPE_GRID, "font-description", desc, NULL);
}
void
fifteen_grid_scramble(FifteenGrid* self) {
CcItem* elements[16];
guint i;
// fill elements
for(i = 16; i > 0; i--) {
gint picked = g_random_int_range(0, i); // random int x: 0 <= x < i
elements[i - 1] = self->elements[picked];
self->elements[picked] = self->elements[i - 1];
}
for(i = 0; i < 16; i++) {
self->elements[i] = elements[i];
if(elements[i]) {
fifteen_item_move(FIFTEEN_ITEM(elements[i]), i, TILE_SIZE);
}
}
}
/* GType stuff */
G_DEFINE_TYPE(FifteenGrid, fifteen_grid, CC_TYPE_RECTANGLE);
enum {
PROP_0,
PROP_FONT
};
static guint
fg_position(FifteenGrid* self, FifteenItem* item) {
guint i;
for(i = 0; i < 16; i++) {
if(self->elements[i] == CC_ITEM(item)) {
return i;
}
}
return -1;
}
static gboolean
fg_element_clicked(FifteenGrid* self, CcView* view, GdkEventButton* ev, FifteenItem* item) {
gboolean can_move = FALSE;
GtkDirectionType direction = 0;
guint i;
i = fg_position(self, item);
if(i%4 && !self->elements[i-1]) {
can_move = TRUE;
direction = GTK_DIR_LEFT;
} else if((i%4 < 3) && !self->elements[i+1]) {
can_move = TRUE;
direction = GTK_DIR_RIGHT;
} else if((i/4 > 0) && !self->elements[i-4]) {
can_move = TRUE;
direction = GTK_DIR_UP;
} else if((i/4 < 3) && !self->elements[i+4]) {
can_move = TRUE;
direction = GTK_DIR_DOWN;
}
if(can_move) {
guint new_i = i;
switch(direction) {
case GTK_DIR_UP:
new_i -= 4;
break;
case GTK_DIR_RIGHT:
new_i += 1;
break;
case GTK_DIR_DOWN:
new_i += 4;
break;
case GTK_DIR_LEFT:
new_i -= 1;
break;
default:
g_assert_not_reached();
break;
}
self->elements[new_i] = CC_ITEM(item);
self->elements[i] = NULL;
fifteen_item_move(item, new_i, TILE_SIZE);
}
return !can_move;
}
static void
fifteen_grid_init(FifteenGrid* self) {
CcRectangle* rectangle = CC_RECTANGLE(self);
CcColor * color = cc_color_new_rgb(0.0, 0.0, 0.0);
CcBrush * brush = cc_brush_color_new(color);
guint i;
cc_rectangle_set_position(rectangle, 0.0, 0.0, 4*TILE_SIZE, 4*TILE_SIZE);
cc_shape_set_brush_border(CC_SHAPE(rectangle), brush);
cc_item_set_grid_aligned(CC_ITEM(self), TRUE);
for(i = 0; i < 15; i++) {
self->elements[i] = fifteen_item_new(i);
cc_item_set_grid_aligned(CC_ITEM(self->elements[i]), TRUE);
cc_shape_set_brush_border(CC_SHAPE(self->elements[i]), brush);
cc_item_append(CC_ITEM(self), self->elements[i]);
fifteen_item_move(FIFTEEN_ITEM(self->elements[i]), i, TILE_SIZE);
g_signal_connect_swapped(self->elements[i], "button-press-event",
G_CALLBACK(fg_element_clicked), self);
}
self->elements[i] = NULL;
}
static void
fg_finalize(GObject* object) {
FifteenGrid* self = FIFTEEN_GRID(object);
if(self->font_description) {
pango_font_description_free(self->font_description);
self->font_description = NULL;
}
G_OBJECT_CLASS(fifteen_grid_parent_class)->dispose(object);
}
static void
fg_get_property(GObject* object, guint prop_id, GValue* value, GParamSpec* pspec) {
FifteenGrid* self = FIFTEEN_GRID(object);
switch(prop_id) {
case PROP_FONT:
g_value_set_boxed(value, self->font_description);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
fg_child_set_font(FifteenItem* item, PangoFontDescription* desc) {
cc_text_set_font_description(CC_TEXT(item->text), desc);
}
static void
fg_set_property(GObject* object, guint prop_id, GValue const* value, GParamSpec* pspec) {
FifteenGrid* self = FIFTEEN_GRID(object);
switch(prop_id) {
case PROP_FONT:
if(self->font_description) {
pango_font_description_free(self->font_description);
self->font_description = NULL;
}
self->font_description = g_value_dup_boxed(value);
g_list_foreach(CC_ITEM(self)->children, G_FUNC(fg_child_set_font), self->font_description);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
fifteen_grid_class_init(FifteenGridClass* self_class) {
GObjectClass* go_class;
/* GObjectClass */
go_class = G_OBJECT_CLASS(self_class);
go_class->finalize = fg_finalize;
go_class->get_property = fg_get_property;
go_class->set_property = fg_set_property;
g_object_class_install_property(go_class,
PROP_FONT,
g_param_spec_boxed("font-description",
"Font Description",
"Font",
PANGO_TYPE_FONT_DESCRIPTION,
G_PARAM_READWRITE));
}
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