1 /* grr_board_view - GTK+ widget for displaying an rr_board
3 * Copyright © 2003 Carl Worth
5 * Permission to use, copy, modify, distribute, and sell this software
6 * and its documentation for any purpose is hereby granted without
7 * fee, provided that the above copyright notice appear in all copies
8 * and that both that copyright notice and this permission notice
9 * appear in supporting documentation, and that the name of Carl Worth
10 * not be used in advertising or publicity pertaining to distribution
11 * of the software without specific, written prior permission.
12 * Carl Worth makes no representations about the suitability of this
13 * software for any purpose. It is provided "as is" without express
14 * or implied warranty.
16 * CARL WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
18 * NO EVENT SHALL CARL WORTH BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
20 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
21 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
22 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 * Author: Carl Worth <carl@theworths.org>
35 #include <gtk/gtkmain.h>
36 #include <gtk/gtksignal.h>
39 #include "grr_board_view.h"
43 #define SCROLL_DELAY_LENGTH 300
44 #define GRR_BOARD_VIEW_DEFAULT_SIZE 100
46 #define GRR_SVG_ASSUMED_WIDTH 32.0
47 #define GRR_SVG_ASSUMED_HEIGHT 32.0
49 /* Forward declarations */
51 static void grr_board_view_class_init (grr_board_view_class_t *klass);
52 static void grr_board_view_init (grr_board_view_t *view);
53 static void grr_board_view_destroy (GtkObject *object);
54 static void grr_board_view_realize (GtkWidget *widget);
55 static void grr_board_view_size_request (GtkWidget *widget,
56 GtkRequisition *requisition);
57 static void grr_board_view_size_allocate (GtkWidget *widget,
58 GtkAllocation *allocation);
59 static gint grr_board_view_expose (GtkWidget *widget,
60 GdkEventExpose *event);
61 static gint grr_board_view_button_press (GtkWidget *widget,
62 GdkEventButton *event);
63 static gint grr_board_view_button_release (GtkWidget *widget,
64 GdkEventButton *event);
65 static gint grr_board_view_motion_notify (GtkWidget *widget,
66 GdkEventMotion *event);
68 static void grr_board_view_update_mouse (grr_board_view_t *view, gint x, gint y);
72 static GtkWidgetClass *parent_class = NULL;
75 grr_board_view_get_type ()
77 static GType view_type = 0;
81 static const GTypeInfo view_info =
83 sizeof (grr_board_view_class_t),
86 (GClassInitFunc) grr_board_view_class_init,
89 sizeof (grr_board_view_t),
91 (GInstanceInitFunc) grr_board_view_init,
94 view_type = g_type_register_static (GTK_TYPE_WIDGET, "grr_board_view", &view_info, 0);
101 grr_board_view_class_init (grr_board_view_class_t *class)
103 GtkObjectClass *object_class;
104 GtkWidgetClass *widget_class;
106 object_class = (GtkObjectClass*) class;
107 widget_class = (GtkWidgetClass*) class;
109 parent_class = gtk_type_class (gtk_widget_get_type ());
111 object_class->destroy = grr_board_view_destroy;
113 widget_class->realize = grr_board_view_realize;
114 widget_class->expose_event = grr_board_view_expose;
115 widget_class->size_request = grr_board_view_size_request;
116 widget_class->size_allocate = grr_board_view_size_allocate;
117 widget_class->button_press_event = grr_board_view_button_press;
118 widget_class->button_release_event = grr_board_view_button_release;
119 widget_class->motion_notify_event = grr_board_view_motion_notify;
123 grr_board_view_init (grr_board_view_t *view)
135 view->cell_width = 0;
136 view->cell_height = 0;
138 view->cell_icon = grr_icon_create ("cell");
139 view->wall_icon = grr_icon_create ("wall");
141 for (i=0; i < RR_NUM_ROBOTS; i++) {
142 robot = rr_robot_from_idx (i);
143 view->robot_icon[i] = grr_icon_create (grr_icon_robot_name (robot));
146 for (i=0; i < RR_NUM_TARGETS; i++) {
147 target = rr_target_from_idx (i);
148 view->target_icon[i] = grr_icon_create (grr_icon_target_name (target));
153 grr_board_view_new (rr_board_t *board)
155 grr_board_view_t *view;
158 view = g_object_new (grr_board_view_get_type (), NULL);
161 rr_board_get_size (board, &view->board_width, &view->board_height);
163 view->damaged = malloc (view->board_height * sizeof (int *));
164 for (y = 0; y < view->board_height; y++) {
165 view->damaged[y] = malloc (view->board_width * sizeof (int));
166 for (x = 0; x< view->board_width; x++) {
167 view->damaged[y][x] = 1;
171 gtk_widget_queue_draw (GTK_WIDGET (view));
177 grr_board_view_set_client (grr_board_view_t *view, rr_client_t *client)
179 g_return_if_fail (view != NULL);
181 view->client = client;
185 grr_board_view_set_active_robot (grr_board_view_t *view, rr_robot_t robot)
187 g_return_if_fail (view != NULL);
189 view->active_robot = robot;
193 grr_board_view_move_active (grr_board_view_t *view, rr_direction_t dir)
196 rr_client_move (view->client, view->active_robot, dir);
198 rr_board_move (view->board, view->active_robot, dir);
199 gtk_widget_queue_draw (GTK_WIDGET (view));
204 grr_board_view_undo (grr_board_view_t *view)
207 rr_client_undo (view->client);
209 rr_board_undo (view->board);
210 gtk_widget_queue_draw (GTK_WIDGET (view));
215 grr_board_view_destroy (GtkObject *object)
217 grr_board_view_t *view;
219 g_return_if_fail (object != NULL);
220 g_return_if_fail (GRR_IS_BOARD_VIEW (object));
222 view = GRR_BOARD_VIEW (object);
227 if (GTK_OBJECT_CLASS (parent_class)->destroy)
228 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
232 grr_board_view_realize (GtkWidget *widget)
234 grr_board_view_t *view;
235 GdkWindowAttr attributes;
236 gint attributes_mask;
238 g_return_if_fail (widget != NULL);
239 g_return_if_fail (GRR_IS_BOARD_VIEW (widget));
241 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
242 view = GRR_BOARD_VIEW (widget);
244 attributes.x = widget->allocation.x;
245 attributes.y = widget->allocation.y;
246 attributes.width = widget->allocation.width;
247 attributes.height = widget->allocation.height;
248 attributes.wclass = GDK_INPUT_OUTPUT;
249 attributes.window_type = GDK_WINDOW_CHILD;
250 attributes.event_mask = gtk_widget_get_events (widget) |
251 GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK |
252 GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK |
253 GDK_POINTER_MOTION_HINT_MASK;
254 attributes.visual = gtk_widget_get_visual (widget);
255 attributes.colormap = gtk_widget_get_colormap (widget);
257 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
258 widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
260 widget->style = gtk_style_attach (widget->style, widget->window);
262 gdk_window_set_user_data (widget->window, widget);
264 gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
268 grr_board_view_size_request (GtkWidget *widget,
269 GtkRequisition *requisition)
271 requisition->width = GRR_BOARD_VIEW_DEFAULT_SIZE;
272 requisition->height = GRR_BOARD_VIEW_DEFAULT_SIZE;
276 grr_board_view_size_allocate (GtkWidget *widget,
277 GtkAllocation *allocation)
279 grr_board_view_t *view;
281 g_return_if_fail (widget != NULL);
282 g_return_if_fail (GRR_IS_BOARD_VIEW (widget));
283 g_return_if_fail (allocation != NULL);
285 widget->allocation = *allocation;
286 view = GRR_BOARD_VIEW (widget);
288 if (GTK_WIDGET_REALIZED (widget)) {
289 gdk_window_move_resize (widget->window,
290 allocation->x, allocation->y,
291 allocation->width, allocation->height);
296 grr_board_view_draw_walls (grr_board_view_t *view,
300 if (wall == RR_WALL_NONE)
303 if (wall & RR_WALL_ABOVE) {
304 grr_icon_draw (view->wall_icon, xrs);
306 if (wall & RR_WALL_LEFT) {
308 cairo_rotate (xrs, M_PI_2);
309 grr_icon_draw (view->wall_icon, xrs);
312 if (wall & RR_WALL_RIGHT) {
314 cairo_translate (xrs, GRR_SVG_ASSUMED_WIDTH, 0);
315 cairo_rotate (xrs, M_PI_2);
316 grr_icon_draw (view->wall_icon, xrs);
319 if (wall & RR_WALL_BELOW) {
321 cairo_translate (xrs, 0, GRR_SVG_ASSUMED_HEIGHT);
322 grr_icon_draw (view->wall_icon, xrs);
328 grr_board_view_expose (GtkWidget *widget,
329 GdkEventExpose *event)
331 grr_board_view_t *view;
336 GdkDrawable *real_drawable;
339 rr_target_t goal_target;
340 int new_cell_width, new_cell_height;
342 g_return_val_if_fail (widget != NULL, FALSE);
343 g_return_val_if_fail (GRR_IS_BOARD_VIEW (widget), FALSE);
344 g_return_val_if_fail (event != NULL, FALSE);
346 view = GRR_BOARD_VIEW (widget);
349 /* Unabstract X from GTK+ */
350 gdk_window_get_internal_paint_info (widget->window, &real_drawable, &x_off, &y_off);
351 dpy = gdk_x11_drawable_get_xdisplay (real_drawable);
352 drawable = gdk_x11_drawable_get_xid (real_drawable);
354 /* Ignore GTK+ and use Cairo for drawing. */
355 xrs = cairo_create ();
356 cairo_set_target_drawable (xrs, dpy, drawable);
358 new_cell_width = widget->allocation.width / view->board_width;
359 if (new_cell_width == 0)
361 new_cell_height = widget->allocation.height / view->board_height;
362 if (new_cell_height == 0)
365 if (new_cell_width != view->cell_width
366 || new_cell_height != view->cell_height) {
371 view->cell_width = new_cell_width;
372 view->cell_height = new_cell_height;
376 view->cell_width / GRR_SVG_ASSUMED_WIDTH,
377 view->cell_height / GRR_SVG_ASSUMED_HEIGHT);
379 grr_icon_predraw (view->cell_icon, xrs,
380 view->cell_width, view->cell_height);
382 grr_icon_predraw (view->wall_icon, xrs,
383 view->cell_width, view->cell_height);
385 for (i=0; i < RR_NUM_ROBOTS; i++) {
386 robot = rr_robot_from_idx (i);
387 grr_icon_predraw (view->robot_icon[i], xrs,
388 view->cell_width, view->cell_height);
391 for (i=0; i < RR_NUM_TARGETS; i++) {
392 target = rr_target_from_idx (i);
393 grr_icon_predraw (view->target_icon[i], xrs,
394 view->cell_width, view->cell_height);
400 view->cell_width = new_cell_width;
401 view->cell_height = new_cell_height;
403 if (event->area.width) {
404 int x_start, y_start;
407 grr_board_view_transform_pixel_to_cell (view,
408 event->area.x, event->area.y,
410 grr_board_view_transform_pixel_to_cell (view,
411 event->area.x + event->area.width - 1,
412 event->area.y + event->area.height - 1,
414 for (y = y_start; y <= y_stop; y++)
415 for (x = x_start; x <= x_stop; x++)
416 view->damaged[y][x] = 1;
419 if (event->count > 0)
422 cairo_translate (xrs, -x_off, -y_off);
424 view->board_pad_x = (widget->allocation.width - view->board_width * view->cell_width) / 2;
425 view->board_pad_y = (widget->allocation.height - view->board_height * view->cell_height) / 2;
427 cairo_translate (xrs, view->board_pad_x, view->board_pad_y);
429 goal_target = rr_board_get_goal_target (board);
431 /* Draw cell contents */
432 for (j=0; j < view->board_height; j++) {
433 for (i=0; i < view->board_width; i++) {
434 if (! view->damaged[j][i])
436 rr_cell_t cell = rr_board_get_cell (board, i, j);
437 rr_target_t target = RR_CELL_GET_TARGET (cell);
438 rr_robot_t robot = RR_CELL_GET_ROBOT (cell);
441 cairo_translate (xrs, i * view->cell_width, j * view->cell_height);
443 grr_icon_draw_predrawn (view->cell_icon, xrs);
446 if (target && target != goal_target) {
448 cairo_set_alpha (xrs, 0.25);
449 grr_icon_draw_predrawn (view->target_icon[rr_target_idx (target)], xrs);
452 grr_icon_draw_predrawn (view->target_icon[rr_target_idx (target)], xrs);
457 grr_icon_draw_predrawn (view->robot_icon[rr_robot_idx (robot)], xrs);
463 /* Draw goal target in center of board */
464 /* XXX: Not a perfect heuristic. Should check for the vacant box too. */
465 if (view->board_width == 16 && view->board_height == 16) {
467 cairo_translate (xrs,
468 (view->board_width / 2 - 1) * view->cell_width,
469 (view->board_height / 2 - 1) * view->cell_height);
471 2 * view->cell_width / GRR_SVG_ASSUMED_WIDTH,
472 2 * view->cell_height / GRR_SVG_ASSUMED_HEIGHT);
473 grr_icon_draw (view->target_icon[rr_target_idx (goal_target)], xrs);
478 for (j=0; j < view->board_height; j++) {
479 for (i=0; i < view->board_width; i++) {
480 if (! view->damaged[j][i])
482 view->damaged[j][i] = 0;
484 cairo_translate (xrs, i * view->cell_width, j * view->cell_height);
486 view->cell_width / GRR_SVG_ASSUMED_WIDTH,
487 view->cell_height / GRR_SVG_ASSUMED_HEIGHT);
488 grr_board_view_draw_walls (view, xrs, RR_CELL_GET_WALLS (rr_board_get_cell(board, i, j)));
499 grr_board_view_transform_pixel_to_cell (grr_board_view_t *view,
500 int pixel_x, int pixel_y,
501 int *cell_x, int *cell_y)
504 x = (pixel_x - view->board_pad_x) / view->cell_width;
505 y = (pixel_y - view->board_pad_y) / view->cell_height;
508 if (x >= view->board_width)
509 x = view->board_width - 1;
512 if (y >= view->board_height)
513 y = view->board_height - 1;
519 grr_board_view_transform_cell_to_pixel (grr_board_view_t *view,
520 int cell_x, int cell_y,
521 int *pixel_x, int *pixel_y)
523 *pixel_x = view->cell_width * cell_x + view->board_pad_x;
524 *pixel_y = view->cell_height * cell_y + view->board_pad_y;
528 grr_board_view_button_press (GtkWidget *widget,
529 GdkEventButton *event)
531 grr_board_view_t *view;
535 g_return_val_if_fail (widget != NULL, FALSE);
536 g_return_val_if_fail (GRR_IS_BOARD_VIEW (widget), FALSE);
537 g_return_val_if_fail (event != NULL, FALSE);
539 view = GRR_BOARD_VIEW (widget);
541 grr_board_view_transform_pixel_to_cell (view,
545 cell = rr_board_get_cell (view->board, x, y);
546 if (!view->button && RR_CELL_GET_ROBOT (cell)) {
548 gtk_grab_add (widget);
550 view->button = event->button;
551 grr_board_view_set_active_robot (view, RR_CELL_GET_ROBOT (cell));
553 grr_board_view_update_mouse (view, event->x, event->y);
560 grr_board_view_button_release (GtkWidget *widget,
561 GdkEventButton *event)
563 grr_board_view_t *view;
566 int robot_x, robot_y;
569 g_return_val_if_fail (widget != NULL, FALSE);
570 g_return_val_if_fail (GRR_IS_BOARD_VIEW (widget), FALSE);
571 g_return_val_if_fail (event != NULL, FALSE);
573 view = GRR_BOARD_VIEW (widget);
575 if (view->button == event->button) {
576 gtk_grab_remove (widget);
580 grr_board_view_transform_pixel_to_cell (view, event->x, event->y, &x, &y);
582 rr_board_find_robot (view->board, view->active_robot, &robot_x, &robot_y);
585 if (dx == 0 && dy == 0)
588 if (abs(dx) > abs(dy))
590 dir = RR_DIRECTION_EAST;
592 dir = RR_DIRECTION_WEST;
595 dir = RR_DIRECTION_SOUTH;
597 dir = RR_DIRECTION_NORTH;
599 grr_board_view_move_active (view, dir);
605 grr_board_view_motion_notify (GtkWidget *widget,
606 GdkEventMotion *event)
608 grr_board_view_t *view;
609 GdkModifierType mods;
612 g_return_val_if_fail (widget != NULL, FALSE);
613 g_return_val_if_fail (GRR_IS_BOARD_VIEW (widget), FALSE);
614 g_return_val_if_fail (event != NULL, FALSE);
616 view = GRR_BOARD_VIEW (widget);
618 if (view->button != 0) {
622 if (event->is_hint || (event->window != widget->window))
623 gdk_window_get_pointer (widget->window, &x, &y, &mods);
625 switch (view->button) {
627 mask = GDK_BUTTON1_MASK;
630 mask = GDK_BUTTON2_MASK;
633 mask = GDK_BUTTON3_MASK;
641 grr_board_view_update_mouse (view, x,y);
648 grr_board_view_update_mouse (grr_board_view_t *view, gint x, gint y)
650 g_return_if_fail (view != NULL);
651 g_return_if_fail (GRR_IS_BOARD_VIEW (view));
653 /* XXX: Perhaps should draw a robot here */
657 grr_board_view_mark_damage (grr_board_view_t *view, int i, int j)
661 grr_board_view_transform_cell_to_pixel (view, i, j, &x, &y);
662 gtk_widget_queue_draw_area (GTK_WIDGET (view), x, y, view->cell_width, view->cell_height);