ref: e96f53452ac06e6b533a30d4caad30dd0dbe46fb
dir: /gtk.c/
/*
* gtk.c: GTK front end for my puzzle collection.
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdarg.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "puzzles.h"
/* ----------------------------------------------------------------------
* Error reporting functions used elsewhere.
*/
void fatal(char *fmt, ...)
{
va_list ap;
fprintf(stderr, "fatal error: ");
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, "\n");
exit(1);
}
/* ----------------------------------------------------------------------
* GTK front end to puzzles.
*/
/*
* This structure holds all the data relevant to a single window.
* In principle this would allow us to open multiple independent
* puzzle windows, although I can't currently see any real point in
* doing so. I'm just coding cleanly because there's no
* particularly good reason not to.
*/
struct frontend {
GtkWidget *window;
GtkWidget *area;
GdkPixmap *pixmap;
GdkColor *colours;
int ncolours;
GdkColormap *colmap;
int w, h;
midend_data *me;
GdkGC *gc;
int bbox_l, bbox_r, bbox_u, bbox_d;
int timer_active, timer_id;
};
void frontend_default_colour(frontend *fe, float *output)
{
GdkColor col = fe->window->style->bg[GTK_STATE_NORMAL];
output[0] = col.red / 65535.0;
output[1] = col.green / 65535.0;
output[2] = col.blue / 65535.0;
}
void start_draw(frontend *fe)
{
fe->gc = gdk_gc_new(fe->area->window);
fe->bbox_l = fe->w;
fe->bbox_r = 0;
fe->bbox_u = fe->h;
fe->bbox_d = 0;
}
void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
{
gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
gdk_draw_rectangle(fe->pixmap, fe->gc, 1, x, y, w, h);
}
void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
{
gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
gdk_draw_line(fe->pixmap, fe->gc, x1, y1, x2, y2);
}
void draw_polygon(frontend *fe, int *coords, int npoints,
int fill, int colour)
{
GdkPoint *points = snewn(npoints, GdkPoint);
int i;
for (i = 0; i < npoints; i++) {
points[i].x = coords[i*2];
points[i].y = coords[i*2+1];
}
gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
gdk_draw_polygon(fe->pixmap, fe->gc, fill, points, npoints);
sfree(points);
}
void draw_update(frontend *fe, int x, int y, int w, int h)
{
if (fe->bbox_l > x ) fe->bbox_l = x ;
if (fe->bbox_r < x+w) fe->bbox_r = x+w;
if (fe->bbox_u > y ) fe->bbox_u = y ;
if (fe->bbox_d < y+h) fe->bbox_d = y+h;
}
void end_draw(frontend *fe)
{
gdk_gc_unref(fe->gc);
fe->gc = NULL;
if (fe->bbox_l < fe->bbox_r && fe->bbox_u < fe->bbox_d) {
gdk_draw_pixmap(fe->area->window,
fe->area->style->fg_gc[GTK_WIDGET_STATE(fe->area)],
fe->pixmap,
fe->bbox_l, fe->bbox_u,
fe->bbox_l, fe->bbox_u,
fe->bbox_r - fe->bbox_l, fe->bbox_d - fe->bbox_u);
}
}
static void destroy(GtkWidget *widget, gpointer data)
{
gtk_main_quit();
}
static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
frontend *fe = (frontend *)data;
int keyval;
if (!fe->pixmap)
return TRUE;
if (event->string[0] && !event->string[1])
keyval = (unsigned char)event->string[0];
else if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up ||
event->keyval == GDK_KP_8)
keyval = CURSOR_UP;
else if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down ||
event->keyval == GDK_KP_2)
keyval = CURSOR_DOWN;
else if (event->keyval == GDK_Left || event->keyval == GDK_KP_Left ||
event->keyval == GDK_KP_4)
keyval = CURSOR_LEFT;
else if (event->keyval == GDK_Right || event->keyval == GDK_KP_Right ||
event->keyval == GDK_KP_6)
keyval = CURSOR_RIGHT;
else if (event->keyval == GDK_KP_Home || event->keyval == GDK_KP_7)
keyval = CURSOR_UP_LEFT;
else if (event->keyval == GDK_KP_End || event->keyval == GDK_KP_1)
keyval = CURSOR_DOWN_LEFT;
else if (event->keyval == GDK_KP_Page_Up || event->keyval == GDK_KP_9)
keyval = CURSOR_UP_RIGHT;
else if (event->keyval == GDK_KP_Page_Down || event->keyval == GDK_KP_3)
keyval = CURSOR_DOWN_RIGHT;
else
keyval = -1;
if (keyval >= 0 &&
!midend_process_key(fe->me, 0, 0, keyval))
gtk_widget_destroy(fe->window);
return TRUE;
}
static gint button_event(GtkWidget *widget, GdkEventButton *event,
gpointer data)
{
frontend *fe = (frontend *)data;
int button;
if (!fe->pixmap)
return TRUE;
if (event->type != GDK_BUTTON_PRESS)
return TRUE;
if (event->button == 2 || (event->state & GDK_SHIFT_MASK))
button = MIDDLE_BUTTON;
else if (event->button == 1)
button = LEFT_BUTTON;
else if (event->button == 3)
button = RIGHT_BUTTON;
else
return FALSE; /* don't even know what button! */
if (!midend_process_key(fe->me, event->x, event->y, button))
gtk_widget_destroy(fe->window);
return TRUE;
}
static gint expose_area(GtkWidget *widget, GdkEventExpose *event,
gpointer data)
{
frontend *fe = (frontend *)data;
if (fe->pixmap) {
gdk_draw_pixmap(widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
fe->pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width, event->area.height);
}
return TRUE;
}
static gint configure_area(GtkWidget *widget,
GdkEventConfigure *event, gpointer data)
{
frontend *fe = (frontend *)data;
GdkGC *gc;
if (fe->pixmap)
gdk_pixmap_unref(fe->pixmap);
fe->pixmap = gdk_pixmap_new(widget->window, fe->w, fe->h, -1);
gc = gdk_gc_new(fe->area->window);
gdk_gc_set_foreground(gc, &fe->colours[0]);
gdk_draw_rectangle(fe->pixmap, gc, 1, 0, 0, fe->w, fe->h);
gdk_gc_unref(gc);
midend_redraw(fe->me);
return TRUE;
}
static gint timer_func(gpointer data)
{
frontend *fe = (frontend *)data;
if (fe->timer_active)
midend_timer(fe->me, 0.02); /* may clear timer_active */
return fe->timer_active;
}
void deactivate_timer(frontend *fe)
{
if (fe->timer_active)
gtk_timeout_remove(fe->timer_id);
fe->timer_active = FALSE;
}
void activate_timer(frontend *fe)
{
if (!fe->timer_active)
fe->timer_id = gtk_timeout_add(20, timer_func, fe);
fe->timer_active = TRUE;
}
static void menu_key_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
int key = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(menuitem),
"user-data"));
if (!midend_process_key(fe->me, 0, 0, key))
gtk_widget_destroy(fe->window);
}
static void menu_preset_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
game_params *params =
(game_params *)gtk_object_get_data(GTK_OBJECT(menuitem), "user-data");
int x, y;
midend_set_params(fe->me, params);
midend_new_game(fe->me, NULL);
midend_size(fe->me, &x, &y);
gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
fe->w = x;
fe->h = y;
}
static GtkWidget *add_menu_item_with_key(frontend *fe, GtkContainer *cont,
char *text, int key)
{
GtkWidget *menuitem = gtk_menu_item_new_with_label(text);
gtk_container_add(cont, menuitem);
gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
GINT_TO_POINTER(key));
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_key_event), fe);
gtk_widget_show(menuitem);
return menuitem;
}
static void add_menu_separator(GtkContainer *cont)
{
GtkWidget *menuitem = gtk_menu_item_new();
gtk_container_add(cont, menuitem);
gtk_widget_show(menuitem);
}
static frontend *new_window(void)
{
frontend *fe;
GtkBox *vbox;
GtkWidget *menubar, *menu, *menuitem;
int x, y, n;
fe = snew(frontend);
fe->me = midend_new(fe);
midend_new_game(fe->me, NULL);
fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
#if 0
gtk_window_set_resizable(GTK_WINDOW(fe->window), FALSE);
#else
gtk_window_set_policy(GTK_WINDOW(fe->window), FALSE, FALSE, TRUE);
#endif
vbox = GTK_BOX(gtk_vbox_new(FALSE, 0));
gtk_container_add(GTK_CONTAINER(fe->window), GTK_WIDGET(vbox));
gtk_widget_show(GTK_WIDGET(vbox));
menubar = gtk_menu_bar_new();
gtk_box_pack_start(vbox, menubar, FALSE, FALSE, 0);
gtk_widget_show(menubar);
menuitem = gtk_menu_item_new_with_label("Game");
gtk_container_add(GTK_CONTAINER(menubar), menuitem);
gtk_widget_show(menuitem);
menu = gtk_menu_new();
gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), menu);
add_menu_item_with_key(fe, GTK_CONTAINER(menu), "New", 'n');
add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Restart", 'r');
if ((n = midend_num_presets(fe->me)) > 0) {
GtkWidget *submenu;
int i;
menuitem = gtk_menu_item_new_with_label("Type");
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_widget_show(menuitem);
submenu = gtk_menu_new();
gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu);
for (i = 0; i < n; i++) {
char *name;
game_params *params;
midend_fetch_preset(fe->me, i, &name, ¶ms);
menuitem = gtk_menu_item_new_with_label(name);
gtk_container_add(GTK_CONTAINER(submenu), menuitem);
gtk_object_set_data(GTK_OBJECT(menuitem), "user-data", params);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_preset_event), fe);
gtk_widget_show(menuitem);
}
}
add_menu_separator(GTK_CONTAINER(menu));
add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Undo", 'u');
add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Redo", '\x12');
add_menu_separator(GTK_CONTAINER(menu));
add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Exit", 'q');
{
int i, ncolours;
float *colours;
gboolean *success;
fe->colmap = gdk_colormap_get_system();
colours = midend_colours(fe->me, &ncolours);
fe->ncolours = ncolours;
fe->colours = snewn(ncolours, GdkColor);
for (i = 0; i < ncolours; i++) {
fe->colours[i].red = colours[i*3] * 0xFFFF;
fe->colours[i].green = colours[i*3+1] * 0xFFFF;
fe->colours[i].blue = colours[i*3+2] * 0xFFFF;
}
success = snewn(ncolours, gboolean);
gdk_colormap_alloc_colors(fe->colmap, fe->colours, ncolours,
FALSE, FALSE, success);
for (i = 0; i < ncolours; i++) {
if (!success[i])
g_error("couldn't allocate colour %d (#%02x%02x%02x)\n",
i, fe->colours[i].red >> 8,
fe->colours[i].green >> 8,
fe->colours[i].blue >> 8);
}
}
fe->area = gtk_drawing_area_new();
midend_size(fe->me, &x, &y);
gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
fe->w = x;
fe->h = y;
gtk_box_pack_end(vbox, fe->area, FALSE, FALSE, 0);
fe->pixmap = NULL;
fe->timer_active = FALSE;
gtk_signal_connect(GTK_OBJECT(fe->window), "destroy",
GTK_SIGNAL_FUNC(destroy), fe);
gtk_signal_connect(GTK_OBJECT(fe->window), "key_press_event",
GTK_SIGNAL_FUNC(key_event), fe);
gtk_signal_connect(GTK_OBJECT(fe->area), "button_press_event",
GTK_SIGNAL_FUNC(button_event), fe);
gtk_signal_connect(GTK_OBJECT(fe->area), "expose_event",
GTK_SIGNAL_FUNC(expose_area), fe);
gtk_signal_connect(GTK_OBJECT(fe->area), "configure_event",
GTK_SIGNAL_FUNC(configure_area), fe);
gtk_widget_add_events(GTK_WIDGET(fe->area), GDK_BUTTON_PRESS_MASK);
gtk_widget_show(fe->area);
gtk_widget_show(fe->window);
return fe;
}
int main(int argc, char **argv)
{
srand(time(NULL));
gtk_init(&argc, &argv);
(void) new_window();
gtk_main();
return 0;
}