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puzzles/gtk.c
Simon Tatham a9d0f9ef35 GDK 2.6, in its doubtless infinite wisdom, has decided that 
gdk_font_from_description() will no longer even _try_ to return a
font matching the specified Pango font description; instead it will
return `fixed' no matter what you do. Therefore, I've had to switch
to using Pango proper for Puzzles text rendering, rather than just
using Pango for font selection.

[originally from svn r5936]
2005-06-09 18:29:11 +00:00

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/*
* gtk.c: GTK front end for my puzzle collection.
*/
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <time.h>
#include <stdarg.h>
#include <string.h>
#include <sys/time.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <gdk/gdkx.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include "puzzles.h"
#if GTK_CHECK_VERSION(2,0,0)
#define USE_PANGO
#endif
/* ----------------------------------------------------------------------
* 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.
*/
struct font {
#ifdef USE_PANGO
PangoFontDescription *desc;
#else
GdkFont *font;
#endif
int type;
int size;
};
/*
* 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;
GtkWidget *statusbar;
guint statusctx;
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;
struct timeval last_time;
struct font *fonts;
int nfonts, fontsize;
config_item *cfg;
int cfg_which, cfgret;
GtkWidget *cfgbox;
void *paste_data;
int paste_data_len;
char *laststatus;
int pw, ph; /* pixmap size (w, h are area size) */
int ox, oy; /* offset of pixmap in drawing area */
};
void get_random_seed(void **randseed, int *randseedsize)
{
struct timeval *tvp = snew(struct timeval);
gettimeofday(tvp, NULL);
*randseed = (void *)tvp;
*randseedsize = sizeof(struct timeval);
}
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 status_bar(frontend *fe, char *text)
{
char *rewritten;
assert(fe->statusbar);
rewritten = midend_rewrite_statusbar(fe->me, text);
if (!fe->laststatus || strcmp(rewritten, fe->laststatus)) {
gtk_statusbar_pop(GTK_STATUSBAR(fe->statusbar), fe->statusctx);
gtk_statusbar_push(GTK_STATUSBAR(fe->statusbar), fe->statusctx, rewritten);
sfree(fe->laststatus);
fe->laststatus = rewritten;
} else {
sfree(rewritten);
}
}
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 clip(frontend *fe, int x, int y, int w, int h)
{
GdkRectangle rect;
rect.x = x;
rect.y = y;
rect.width = w;
rect.height = h;
gdk_gc_set_clip_rectangle(fe->gc, &rect);
}
void unclip(frontend *fe)
{
GdkRectangle rect;
rect.x = 0;
rect.y = 0;
rect.width = fe->w;
rect.height = fe->h;
gdk_gc_set_clip_rectangle(fe->gc, &rect);
}
void draw_text(frontend *fe, int x, int y, int fonttype, int fontsize,
int align, int colour, char *text)
{
int i;
/*
* Find or create the font.
*/
for (i = 0; i < fe->nfonts; i++)
if (fe->fonts[i].type == fonttype && fe->fonts[i].size == fontsize)
break;
if (i == fe->nfonts) {
if (fe->fontsize <= fe->nfonts) {
fe->fontsize = fe->nfonts + 10;
fe->fonts = sresize(fe->fonts, fe->fontsize, struct font);
}
fe->nfonts++;
fe->fonts[i].type = fonttype;
fe->fonts[i].size = fontsize;
#ifdef USE_PANGO
/*
* Use Pango to find the closest match to the requested
* font.
*/
{
PangoFontDescription *fd;
fd = pango_font_description_new();
/* `Monospace' and `Sans' are meta-families guaranteed to exist */
pango_font_description_set_family(fd, fonttype == FONT_FIXED ?
"Monospace" : "Sans");
pango_font_description_set_weight(fd, PANGO_WEIGHT_BOLD);
/*
* I found some online Pango documentation which
* described a function called
* pango_font_description_set_absolute_size(), which is
* _exactly_ what I want here. Unfortunately, none of
* my local Pango installations have it (presumably
* they're too old), so I'm going to have to hack round
* it by figuring out the point size myself. This
* limits me to X and probably also breaks in later
* Pango installations, so ideally I should add another
* CHECK_VERSION type ifdef and use set_absolute_size
* where available. All very annoying.
*/
#ifdef HAVE_SENSIBLE_ABSOLUTE_SIZE_FUNCTION
pango_font_description_set_absolute_size(fd, PANGO_SCALE*fontsize);
#else
{
Display *d = GDK_DISPLAY();
int s = DefaultScreen(d);
double resolution =
(PANGO_SCALE * 72.27 / 25.4) *
((double) DisplayWidthMM(d, s) / DisplayWidth (d, s));
pango_font_description_set_size(fd, resolution * fontsize);
}
#endif
fe->fonts[i].desc = fd;
}
#else
/*
* In GTK 1.2, I don't know of any plausible way to
* pick a suitable font, so I'm just going to be
* tedious.
*/
fe->fonts[i].font = gdk_font_load(fonttype == FONT_FIXED ?
"fixed" : "variable");
#endif
}
/*
* Set the colour.
*/
gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
#ifdef USE_PANGO
{
PangoLayout *layout;
PangoRectangle rect;
/*
* Create a layout.
*/
layout = pango_layout_new(gtk_widget_get_pango_context(fe->area));
pango_layout_set_font_description(layout, fe->fonts[i].desc);
pango_layout_set_text(layout, text, strlen(text));
pango_layout_get_pixel_extents(layout, NULL, &rect);
if (align & ALIGN_VCENTRE)
rect.y -= rect.height / 2;
if (align & ALIGN_HCENTRE)
rect.x -= rect.width / 2;
else if (align & ALIGN_HRIGHT)
rect.x -= rect.width;
gdk_draw_layout(fe->pixmap, fe->gc, rect.x + x, rect.y + y, layout);
g_object_unref(layout);
}
#else
/*
* Find string dimensions and process alignment.
*/
{
int lb, rb, wid, asc, desc;
/*
* Measure vertical string extents with respect to the same
* string always...
*/
gdk_string_extents(fe->fonts[i].font,
"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
&lb, &rb, &wid, &asc, &desc);
if (align & ALIGN_VCENTRE)
y += asc - (asc+desc)/2;
/*
* ... but horizontal extents with respect to the provided
* string. This means that multiple pieces of text centred
* on the same y-coordinate don't have different baselines.
*/
gdk_string_extents(fe->fonts[i].font, text,
&lb, &rb, &wid, &asc, &desc);
if (align & ALIGN_HCENTRE)
x -= wid / 2;
else if (align & ALIGN_HRIGHT)
x -= wid;
}
/*
* Actually draw the text.
*/
gdk_draw_string(fe->pixmap, fe->fonts[i].font, fe->gc, x, y, text);
#endif
}
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->ox + fe->bbox_l, fe->oy + fe->bbox_u,
fe->bbox_r - fe->bbox_l, fe->bbox_d - fe->bbox_u);
}
}
static void destroy(GtkWidget *widget, gpointer data)
{
frontend *fe = (frontend *)data;
deactivate_timer(fe);
gtk_main_quit();
}
static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
frontend *fe = (frontend *)data;
int keyval;
int shift = (event->state & GDK_SHIFT_MASK) ? MOD_SHFT : 0;
int ctrl = (event->state & GDK_CONTROL_MASK) ? MOD_CTRL : 0;
if (!fe->pixmap)
return TRUE;
if (event->keyval == GDK_Up)
keyval = shift | ctrl | CURSOR_UP;
else if (event->keyval == GDK_KP_Up || event->keyval == GDK_KP_8)
keyval = MOD_NUM_KEYPAD | '8';
else if (event->keyval == GDK_Down)
keyval = shift | ctrl | CURSOR_DOWN;
else if (event->keyval == GDK_KP_Down || event->keyval == GDK_KP_2)
keyval = MOD_NUM_KEYPAD | '2';
else if (event->keyval == GDK_Left)
keyval = shift | ctrl | CURSOR_LEFT;
else if (event->keyval == GDK_KP_Left || event->keyval == GDK_KP_4)
keyval = MOD_NUM_KEYPAD | '4';
else if (event->keyval == GDK_Right)
keyval = shift | ctrl | CURSOR_RIGHT;
else if (event->keyval == GDK_KP_Right || event->keyval == GDK_KP_6)
keyval = MOD_NUM_KEYPAD | '6';
else if (event->keyval == GDK_KP_Home || event->keyval == GDK_KP_7)
keyval = MOD_NUM_KEYPAD | '7';
else if (event->keyval == GDK_KP_End || event->keyval == GDK_KP_1)
keyval = MOD_NUM_KEYPAD | '1';
else if (event->keyval == GDK_KP_Page_Up || event->keyval == GDK_KP_9)
keyval = MOD_NUM_KEYPAD | '9';
else if (event->keyval == GDK_KP_Page_Down || event->keyval == GDK_KP_3)
keyval = MOD_NUM_KEYPAD | '3';
else if (event->keyval == GDK_KP_Insert || event->keyval == GDK_KP_0)
keyval = MOD_NUM_KEYPAD | '0';
else if (event->keyval == GDK_KP_Begin || event->keyval == GDK_KP_5)
keyval = MOD_NUM_KEYPAD | '5';
else if (event->string[0] && !event->string[1])
keyval = (unsigned char)event->string[0];
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 && event->type != GDK_BUTTON_RELEASE)
return TRUE;
if (event->button == 2 || (event->state & GDK_SHIFT_MASK))
button = MIDDLE_BUTTON;
else if (event->button == 3 || (event->state & GDK_MOD1_MASK))
button = RIGHT_BUTTON;
else if (event->button == 1)
button = LEFT_BUTTON;
else
return FALSE; /* don't even know what button! */
if (event->type == GDK_BUTTON_RELEASE)
button += LEFT_RELEASE - LEFT_BUTTON;
if (!midend_process_key(fe->me, event->x - fe->ox,
event->y - fe->oy, button))
gtk_widget_destroy(fe->window);
return TRUE;
}
static gint motion_event(GtkWidget *widget, GdkEventMotion *event,
gpointer data)
{
frontend *fe = (frontend *)data;
int button;
if (!fe->pixmap)
return TRUE;
if (event->state & (GDK_BUTTON2_MASK | GDK_SHIFT_MASK))
button = MIDDLE_DRAG;
else if (event->state & GDK_BUTTON1_MASK)
button = LEFT_DRAG;
else if (event->state & GDK_BUTTON3_MASK)
button = RIGHT_DRAG;
else
return FALSE; /* don't even know what button! */
if (!midend_process_key(fe->me, event->x - fe->ox,
event->y - fe->oy, 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 - fe->ox, event->area.y - fe->oy,
event->area.x, event->area.y,
event->area.width, event->area.height);
}
return TRUE;
}
static gint map_window(GtkWidget *widget, GdkEvent *event,
gpointer data)
{
frontend *fe = (frontend *)data;
/*
* Apparently we need to do this because otherwise the status
* bar will fail to update immediately. Annoying, but there we
* go.
*/
gtk_widget_queue_draw(fe->window);
return TRUE;
}
static gint configure_area(GtkWidget *widget,
GdkEventConfigure *event, gpointer data)
{
frontend *fe = (frontend *)data;
GdkGC *gc;
int x, y;
if (fe->pixmap)
gdk_pixmap_unref(fe->pixmap);
x = fe->w = event->width;
y = fe->h = event->height;
midend_size(fe->me, &x, &y, TRUE);
fe->pw = x;
fe->ph = y;
fe->ox = (fe->w - fe->pw) / 2;
fe->oy = (fe->h - fe->ph) / 2;
fe->pixmap = gdk_pixmap_new(widget->window, fe->pw, fe->ph, -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->pw, fe->ph);
gdk_gc_unref(gc);
midend_force_redraw(fe->me);
return TRUE;
}
static gint timer_func(gpointer data)
{
frontend *fe = (frontend *)data;
if (fe->timer_active) {
struct timeval now;
float elapsed;
gettimeofday(&now, NULL);
elapsed = ((now.tv_usec - fe->last_time.tv_usec) * 0.000001F +
(now.tv_sec - fe->last_time.tv_sec));
midend_timer(fe->me, elapsed); /* may clear timer_active */
fe->last_time = now;
}
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);
gettimeofday(&fe->last_time, NULL);
}
fe->timer_active = TRUE;
}
static void window_destroy(GtkWidget *widget, gpointer data)
{
gtk_main_quit();
}
static void errmsg_button_clicked(GtkButton *button, gpointer data)
{
gtk_widget_destroy(GTK_WIDGET(data));
}
static int win_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
GtkObject *cancelbutton = GTK_OBJECT(data);
/*
* `Escape' effectively clicks the cancel button
*/
if (event->keyval == GDK_Escape) {
gtk_signal_emit_by_name(GTK_OBJECT(cancelbutton), "clicked");
return TRUE;
}
return FALSE;
}
void message_box(GtkWidget *parent, char *title, char *msg, int centre)
{
GtkWidget *window, *hbox, *text, *ok;
window = gtk_dialog_new();
text = gtk_label_new(msg);
gtk_misc_set_alignment(GTK_MISC(text), 0.0, 0.0);
hbox = gtk_hbox_new(FALSE, 0);
gtk_box_pack_start(GTK_BOX(hbox), text, FALSE, FALSE, 20);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(window)->vbox),
hbox, FALSE, FALSE, 20);
gtk_widget_show(text);
gtk_widget_show(hbox);
gtk_window_set_title(GTK_WINDOW(window), title);
gtk_label_set_line_wrap(GTK_LABEL(text), TRUE);
ok = gtk_button_new_with_label("OK");
gtk_box_pack_end(GTK_BOX(GTK_DIALOG(window)->action_area),
ok, FALSE, FALSE, 0);
gtk_widget_show(ok);
GTK_WIDGET_SET_FLAGS(ok, GTK_CAN_DEFAULT);
gtk_window_set_default(GTK_WINDOW(window), ok);
gtk_signal_connect(GTK_OBJECT(ok), "clicked",
GTK_SIGNAL_FUNC(errmsg_button_clicked), window);
gtk_signal_connect(GTK_OBJECT(window), "destroy",
GTK_SIGNAL_FUNC(window_destroy), NULL);
gtk_signal_connect(GTK_OBJECT(window), "key_press_event",
GTK_SIGNAL_FUNC(win_key_press), ok);
gtk_window_set_modal(GTK_WINDOW(window), TRUE);
gtk_window_set_transient_for(GTK_WINDOW(window), GTK_WINDOW(parent));
/* set_transient_window_pos(parent, window); */
gtk_widget_show(window);
gtk_main();
}
void error_box(GtkWidget *parent, char *msg)
{
message_box(parent, "Error", msg, FALSE);
}
static void config_ok_button_clicked(GtkButton *button, gpointer data)
{
frontend *fe = (frontend *)data;
char *err;
err = midend_set_config(fe->me, fe->cfg_which, fe->cfg);
if (err)
error_box(fe->cfgbox, err);
else {
fe->cfgret = TRUE;
gtk_widget_destroy(fe->cfgbox);
}
}
static void config_cancel_button_clicked(GtkButton *button, gpointer data)
{
frontend *fe = (frontend *)data;
gtk_widget_destroy(fe->cfgbox);
}
static int editbox_key(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
/*
* GtkEntry has a nasty habit of eating the Return key, which
* is unhelpful since it doesn't actually _do_ anything with it
* (it calls gtk_widget_activate, but our edit boxes never need
* activating). So I catch Return before GtkEntry sees it, and
* pass it straight on to the parent widget. Effect: hitting
* Return in an edit box will now activate the default button
* in the dialog just like it will everywhere else.
*/
if (event->keyval == GDK_Return && widget->parent != NULL) {
gint return_val;
gtk_signal_emit_stop_by_name(GTK_OBJECT(widget), "key_press_event");
gtk_signal_emit_by_name(GTK_OBJECT(widget->parent), "key_press_event",
event, &return_val);
return return_val;
}
return FALSE;
}
static void editbox_changed(GtkEditable *ed, gpointer data)
{
config_item *i = (config_item *)data;
sfree(i->sval);
i->sval = dupstr(gtk_entry_get_text(GTK_ENTRY(ed)));
}
static void button_toggled(GtkToggleButton *tb, gpointer data)
{
config_item *i = (config_item *)data;
i->ival = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tb));
}
static void droplist_sel(GtkMenuItem *item, gpointer data)
{
config_item *i = (config_item *)data;
i->ival = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(item),
"user-data"));
}
static int get_config(frontend *fe, int which)
{
GtkWidget *w, *table, *cancel;
char *title;
config_item *i;
int y;
fe->cfg = midend_get_config(fe->me, which, &title);
fe->cfg_which = which;
fe->cfgret = FALSE;
fe->cfgbox = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(fe->cfgbox), title);
sfree(title);
w = gtk_button_new_with_label("OK");
gtk_box_pack_end(GTK_BOX(GTK_DIALOG(fe->cfgbox)->action_area),
w, FALSE, FALSE, 0);
gtk_widget_show(w);
GTK_WIDGET_SET_FLAGS(w, GTK_CAN_DEFAULT);
gtk_window_set_default(GTK_WINDOW(fe->cfgbox), w);
gtk_signal_connect(GTK_OBJECT(w), "clicked",
GTK_SIGNAL_FUNC(config_ok_button_clicked), fe);
w = gtk_button_new_with_label("Cancel");
gtk_box_pack_end(GTK_BOX(GTK_DIALOG(fe->cfgbox)->action_area),
w, FALSE, FALSE, 0);
gtk_widget_show(w);
gtk_signal_connect(GTK_OBJECT(w), "clicked",
GTK_SIGNAL_FUNC(config_cancel_button_clicked), fe);
cancel = w;
table = gtk_table_new(1, 2, FALSE);
y = 0;
gtk_box_pack_end(GTK_BOX(GTK_DIALOG(fe->cfgbox)->vbox),
table, FALSE, FALSE, 0);
gtk_widget_show(table);
for (i = fe->cfg; i->type != C_END; i++) {
gtk_table_resize(GTK_TABLE(table), y+1, 2);
switch (i->type) {
case C_STRING:
/*
* Edit box with a label beside it.
*/
w = gtk_label_new(i->name);
gtk_misc_set_alignment(GTK_MISC(w), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), w, 0, 1, y, y+1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
3, 3);
gtk_widget_show(w);
w = gtk_entry_new();
gtk_table_attach(GTK_TABLE(table), w, 1, 2, y, y+1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
3, 3);
gtk_entry_set_text(GTK_ENTRY(w), i->sval);
gtk_signal_connect(GTK_OBJECT(w), "changed",
GTK_SIGNAL_FUNC(editbox_changed), i);
gtk_signal_connect(GTK_OBJECT(w), "key_press_event",
GTK_SIGNAL_FUNC(editbox_key), NULL);
gtk_widget_show(w);
break;
case C_BOOLEAN:
/*
* Simple checkbox.
*/
w = gtk_check_button_new_with_label(i->name);
gtk_signal_connect(GTK_OBJECT(w), "toggled",
GTK_SIGNAL_FUNC(button_toggled), i);
gtk_table_attach(GTK_TABLE(table), w, 0, 2, y, y+1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
3, 3);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(w), i->ival);
gtk_widget_show(w);
break;
case C_CHOICES:
/*
* Drop-down list (GtkOptionMenu).
*/
w = gtk_label_new(i->name);
gtk_misc_set_alignment(GTK_MISC(w), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), w, 0, 1, y, y+1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
3, 3);
gtk_widget_show(w);
w = gtk_option_menu_new();
gtk_table_attach(GTK_TABLE(table), w, 1, 2, y, y+1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
GTK_EXPAND | GTK_SHRINK | GTK_FILL,
3, 3);
gtk_widget_show(w);
{
int c, val;
char *p, *q, *name;
GtkWidget *menuitem;
GtkWidget *menu = gtk_menu_new();
gtk_option_menu_set_menu(GTK_OPTION_MENU(w), menu);
c = *i->sval;
p = i->sval+1;
val = 0;
while (*p) {
q = p;
while (*q && *q != c)
q++;
name = snewn(q-p+1, char);
strncpy(name, p, q-p);
name[q-p] = '\0';
if (*q) q++; /* eat delimiter */
menuitem = gtk_menu_item_new_with_label(name);
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
GINT_TO_POINTER(val));
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(droplist_sel), i);
gtk_widget_show(menuitem);
val++;
p = q;
}
gtk_option_menu_set_history(GTK_OPTION_MENU(w), i->ival);
}
break;
}
y++;
}
gtk_signal_connect(GTK_OBJECT(fe->cfgbox), "destroy",
GTK_SIGNAL_FUNC(window_destroy), NULL);
gtk_signal_connect(GTK_OBJECT(fe->cfgbox), "key_press_event",
GTK_SIGNAL_FUNC(win_key_press), cancel);
gtk_window_set_modal(GTK_WINDOW(fe->cfgbox), TRUE);
gtk_window_set_transient_for(GTK_WINDOW(fe->cfgbox),
GTK_WINDOW(fe->window));
/* set_transient_window_pos(fe->window, fe->cfgbox); */
gtk_widget_show(fe->cfgbox);
gtk_main();
free_cfg(fe->cfg);
return fe->cfgret;
}
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 get_size(frontend *fe, int *px, int *py)
{
int x, y;
/*
* Currently I don't want to make the GTK port scale large
* puzzles to fit on the screen. This is because X does permit
* extremely large windows and many window managers provide a
* means of navigating round them, and the users I consulted
* before deciding said that they'd rather have enormous puzzle
* windows spanning multiple screen pages than have them
* shrunk. I could change my mind later or introduce
* configurability; this would be the place to do so, by
* replacing the initial values of x and y with the screen
* dimensions.
*/
x = INT_MAX;
y = INT_MAX;
midend_size(fe->me, &x, &y, FALSE);
*px = x;
*py = y;
}
#if !GTK_CHECK_VERSION(2,0,0)
#define gtk_window_resize(win, x, y) \
gdk_window_resize(GTK_WIDGET(win)->window, x, y)
#endif
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);
get_size(fe, &x, &y);
fe->w = x;
fe->h = y;
gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
gtk_window_resize(GTK_WINDOW(fe->window), 1, 1);
}
GdkAtom compound_text_atom, utf8_string_atom;
int paste_initialised = FALSE;
void init_paste()
{
unsigned char empty[] = { 0 };
if (paste_initialised)
return;
if (!compound_text_atom)
compound_text_atom = gdk_atom_intern("COMPOUND_TEXT", FALSE);
if (!utf8_string_atom)
utf8_string_atom = gdk_atom_intern("UTF8_STRING", FALSE);
/*
* Ensure that all the cut buffers exist - according to the
* ICCCM, we must do this before we start using cut buffers.
*/
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER0, XA_STRING, 8, PropModeAppend, empty, 0);
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER1, XA_STRING, 8, PropModeAppend, empty, 0);
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER2, XA_STRING, 8, PropModeAppend, empty, 0);
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER3, XA_STRING, 8, PropModeAppend, empty, 0);
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER4, XA_STRING, 8, PropModeAppend, empty, 0);
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER5, XA_STRING, 8, PropModeAppend, empty, 0);
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER6, XA_STRING, 8, PropModeAppend, empty, 0);
XChangeProperty(GDK_DISPLAY(), GDK_ROOT_WINDOW(),
XA_CUT_BUFFER7, XA_STRING, 8, PropModeAppend, empty, 0);
}
/* Store data in a cut-buffer. */
void store_cutbuffer(char *ptr, int len)
{
/* ICCCM says we must rotate the buffers before storing to buffer 0. */
XRotateBuffers(GDK_DISPLAY(), 1);
XStoreBytes(GDK_DISPLAY(), ptr, len);
}
void write_clip(frontend *fe, char *data)
{
init_paste();
if (fe->paste_data)
sfree(fe->paste_data);
/*
* For this simple application we can safely assume that the
* data passed to this function is pure ASCII, which means we
* can return precisely the same stuff for types STRING,
* COMPOUND_TEXT or UTF8_STRING.
*/
fe->paste_data = data;
fe->paste_data_len = strlen(data);
store_cutbuffer(fe->paste_data, fe->paste_data_len);
if (gtk_selection_owner_set(fe->area, GDK_SELECTION_PRIMARY,
CurrentTime)) {
gtk_selection_add_target(fe->area, GDK_SELECTION_PRIMARY,
GDK_SELECTION_TYPE_STRING, 1);
gtk_selection_add_target(fe->area, GDK_SELECTION_PRIMARY,
compound_text_atom, 1);
gtk_selection_add_target(fe->area, GDK_SELECTION_PRIMARY,
utf8_string_atom, 1);
}
}
void selection_get(GtkWidget *widget, GtkSelectionData *seldata,
guint info, guint time_stamp, gpointer data)
{
frontend *fe = (frontend *)data;
gtk_selection_data_set(seldata, seldata->target, 8,
fe->paste_data, fe->paste_data_len);
}
gint selection_clear(GtkWidget *widget, GdkEventSelection *seldata,
gpointer data)
{
frontend *fe = (frontend *)data;
if (fe->paste_data)
sfree(fe->paste_data);
fe->paste_data = NULL;
fe->paste_data_len = 0;
return TRUE;
}
static void menu_copy_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
char *text;
text = midend_text_format(fe->me);
if (text) {
write_clip(fe, text);
} else {
gdk_beep();
}
}
static void menu_solve_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
char *msg;
msg = midend_solve(fe->me);
if (msg)
error_box(fe->window, msg);
}
static void menu_restart_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
midend_restart_game(fe->me);
}
static void menu_config_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
int which = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(menuitem),
"user-data"));
int x, y;
if (!get_config(fe, which))
return;
midend_new_game(fe->me);
get_size(fe, &x, &y);
fe->w = x;
fe->h = y;
gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
gtk_window_resize(GTK_WINDOW(fe->window), 1, 1);
}
static void menu_about_event(GtkMenuItem *menuitem, gpointer data)
{
frontend *fe = (frontend *)data;
char titlebuf[256];
char textbuf[1024];
sprintf(titlebuf, "About %.200s", thegame.name);
sprintf(textbuf,
"%.200s\n\n"
"from Simon Tatham's Portable Puzzle Collection\n\n"
"%.500s", thegame.name, ver);
message_box(fe->window, titlebuf, textbuf, TRUE);
}
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(char *game_id, char **error)
{
frontend *fe;
GtkBox *vbox;
GtkWidget *menubar, *menu, *menuitem;
int x, y, n;
fe = snew(frontend);
fe->timer_active = FALSE;
fe->timer_id = -1;
fe->me = midend_new(fe, &thegame);
if (game_id) {
*error = midend_game_id(fe->me, game_id);
if (*error) {
midend_free(fe->me);
sfree(fe);
return NULL;
}
}
midend_new_game(fe->me);
fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(fe->window), thegame.name);
#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');
menuitem = gtk_menu_item_new_with_label("Restart");
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_restart_event), fe);
gtk_widget_show(menuitem);
menuitem = gtk_menu_item_new_with_label("Specific...");
gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
GINT_TO_POINTER(CFG_DESC));
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_config_event), fe);
gtk_widget_show(menuitem);
menuitem = gtk_menu_item_new_with_label("Random Seed...");
gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
GINT_TO_POINTER(CFG_SEED));
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_config_event), fe);
gtk_widget_show(menuitem);
if ((n = midend_num_presets(fe->me)) > 0 || thegame.can_configure) {
GtkWidget *submenu;
int i;
menuitem = gtk_menu_item_new_with_label("Type");
gtk_container_add(GTK_CONTAINER(menubar), 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, &params);
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);
}
if (thegame.can_configure) {
menuitem = gtk_menu_item_new_with_label("Custom...");
gtk_object_set_data(GTK_OBJECT(menuitem), "user-data",
GPOINTER_TO_INT(CFG_SETTINGS));
gtk_container_add(GTK_CONTAINER(submenu), menuitem);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_config_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');
if (thegame.can_format_as_text) {
add_menu_separator(GTK_CONTAINER(menu));
menuitem = gtk_menu_item_new_with_label("Copy");
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_copy_event), fe);
gtk_widget_show(menuitem);
}
if (thegame.can_solve) {
add_menu_separator(GTK_CONTAINER(menu));
menuitem = gtk_menu_item_new_with_label("Solve");
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_solve_event), fe);
gtk_widget_show(menuitem);
}
add_menu_separator(GTK_CONTAINER(menu));
add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Exit", 'q');
menuitem = gtk_menu_item_new_with_label("Help");
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);
menuitem = gtk_menu_item_new_with_label("About");
gtk_container_add(GTK_CONTAINER(menu), menuitem);
gtk_signal_connect(GTK_OBJECT(menuitem), "activate",
GTK_SIGNAL_FUNC(menu_about_event), fe);
gtk_widget_show(menuitem);
{
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);
}
}
if (midend_wants_statusbar(fe->me)) {
GtkWidget *viewport;
GtkRequisition req;
viewport = gtk_viewport_new(NULL, NULL);
gtk_viewport_set_shadow_type(GTK_VIEWPORT(viewport), GTK_SHADOW_NONE);
fe->statusbar = gtk_statusbar_new();
gtk_container_add(GTK_CONTAINER(viewport), fe->statusbar);
gtk_widget_show(viewport);
gtk_box_pack_end(vbox, viewport, FALSE, FALSE, 0);
gtk_widget_show(fe->statusbar);
fe->statusctx = gtk_statusbar_get_context_id
(GTK_STATUSBAR(fe->statusbar), "game");
gtk_statusbar_push(GTK_STATUSBAR(fe->statusbar), fe->statusctx,
"test");
gtk_widget_size_request(fe->statusbar, &req);
#if 0
/* For GTK 2.0, should we be using gtk_widget_set_size_request? */
#endif
gtk_widget_set_usize(viewport, -1, req.height);
} else
fe->statusbar = NULL;
fe->area = gtk_drawing_area_new();
get_size(fe, &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, TRUE, TRUE, 0);
fe->pixmap = NULL;
fe->fonts = NULL;
fe->nfonts = fe->fontsize = 0;
fe->laststatus = NULL;
fe->paste_data = NULL;
fe->paste_data_len = 0;
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), "button_release_event",
GTK_SIGNAL_FUNC(button_event), fe);
gtk_signal_connect(GTK_OBJECT(fe->area), "motion_notify_event",
GTK_SIGNAL_FUNC(motion_event), fe);
gtk_signal_connect(GTK_OBJECT(fe->area), "selection_get",
GTK_SIGNAL_FUNC(selection_get), fe);
gtk_signal_connect(GTK_OBJECT(fe->area), "selection_clear_event",
GTK_SIGNAL_FUNC(selection_clear), fe);
gtk_signal_connect(GTK_OBJECT(fe->area), "expose_event",
GTK_SIGNAL_FUNC(expose_area), fe);
gtk_signal_connect(GTK_OBJECT(fe->window), "map_event",
GTK_SIGNAL_FUNC(map_window), 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 |
GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON_MOTION_MASK);
gtk_widget_show(fe->area);
gtk_widget_show(fe->window);
gdk_window_set_background(fe->area->window, &fe->colours[0]);
gdk_window_set_background(fe->window->window, &fe->colours[0]);
return fe;
}
int main(int argc, char **argv)
{
char *pname = argv[0];
char *error;
if (argc > 1 && !strcmp(argv[1], "--version")) {
printf("%s, from Simon Tatham's Portable Puzzle Collection\n%s\n",
thegame.name, ver);
return 0;
}
/*
* Special standalone mode for generating puzzle IDs on the
* command line. Useful for generating puzzles to be printed
* out and solved offline (for puzzles where that even makes
* sense - Solo, for example, is a lot more pencil-and-paper
* friendly than Net!)
*
* Usage:
*
* <puzzle-name> --generate [<n> [<params>]]
*
* <n>, if present, is the number of puzzle IDs to generate.
* <params>, if present, is the same type of parameter string
* you would pass to the puzzle when running it in GUI mode,
* including optional extras such as the expansion factor in
* Rectangles and the difficulty level in Solo.
*
* If you specify <params>, you must also specify <n> (although
* you may specify it to be 1). Sorry; that was the
* simplest-to-parse command-line syntax I came up with.
*/
if (argc > 1 && !strcmp(argv[1], "--generate")) {
int n = 1;
char *params = NULL, *seed = NULL;
game_params *par;
random_state *rs;
char *parstr;
if (argc > 2)
n = atoi(argv[2]);
if (argc > 3)
params = argv[3];
par = thegame.default_params();
if (params) {
if ( (seed = strchr(params, '#')) != NULL )
*seed++ = '\0';
thegame.decode_params(par, params);
}
if ((error = thegame.validate_params(par)) != NULL) {
fprintf(stderr, "%s: %s\n", pname, error);
return 1;
}
parstr = thegame.encode_params(par, FALSE);
{
void *seeddata;
int seedlen;
if (seed) {
seeddata = seed;
seedlen = strlen(seed);
} else {
get_random_seed(&seeddata, &seedlen);
}
rs = random_init(seeddata, seedlen);
}
while (n-- > 0) {
game_aux_info *aux = NULL;
char *desc = thegame.new_desc(par, rs, &aux, FALSE);
printf("%s:%s\n", parstr, desc);
sfree(desc);
if (aux)
thegame.free_aux_info(aux);
}
return 0;
} else {
gtk_init(&argc, &argv);
if (!new_window(argc > 1 ? argv[1] : NULL, &error)) {
fprintf(stderr, "%s: %s\n", pname, error);
return 1;
}
gtk_main();
}
return 0;
}
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