mirror of
git://git.tartarus.org/simon/puzzles.git
synced 2025-04-20 23:51:29 -07:00
Files
308 lines
7.5 KiB
C
308 lines
7.5 KiB
C
/*
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* gtk.c: GTK front end for my puzzle collection.
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*
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* TODO:
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*
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* - Handle resizing, probably just by forbidding it.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <stdarg.h>
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#include <gtk/gtk.h>
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#include "puzzles.h"
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/* ----------------------------------------------------------------------
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* Error reporting functions used elsewhere.
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*/
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void fatal(char *fmt, ...)
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{
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va_list ap;
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fprintf(stderr, "fatal error: ");
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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exit(1);
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}
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/* ----------------------------------------------------------------------
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* GTK front end to puzzles.
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*/
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/*
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* This structure holds all the data relevant to a single window.
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* In principle this would allow us to open multiple independent
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* puzzle windows, although I can't currently see any real point in
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* doing so. I'm just coding cleanly because there's no
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* particularly good reason not to.
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*/
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struct frontend {
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GtkWidget *window;
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GtkWidget *area;
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GdkPixmap *pixmap;
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GdkColor *colours;
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int ncolours;
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GdkColormap *colmap;
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int w, h;
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midend_data *me;
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GdkGC *gc;
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int bbox_l, bbox_r, bbox_u, bbox_d;
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int timer_active;
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};
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void frontend_default_colour(frontend *fe, float *output)
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{
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GdkColor col = fe->window->style->bg[GTK_STATE_NORMAL];
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output[0] = col.red / 65535.0;
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output[1] = col.green / 65535.0;
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output[2] = col.blue / 65535.0;
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}
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void start_draw(frontend *fe)
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{
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fe->gc = gdk_gc_new(fe->area->window);
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fe->bbox_l = fe->w;
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fe->bbox_r = 0;
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fe->bbox_u = fe->h;
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fe->bbox_d = 0;
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}
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void draw_rect(frontend *fe, int x, int y, int w, int h, int colour)
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{
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gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
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gdk_draw_rectangle(fe->pixmap, fe->gc, 1, x, y, w, h);
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}
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void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour)
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{
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gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
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gdk_draw_line(fe->pixmap, fe->gc, x1, y1, x2, y2);
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}
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void draw_polygon(frontend *fe, int *coords, int npoints,
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int fill, int colour)
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{
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GdkPoint *points = snewn(npoints, GdkPoint);
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int i;
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for (i = 0; i < npoints; i++) {
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points[i].x = coords[i*2];
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points[i].y = coords[i*2+1];
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}
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gdk_gc_set_foreground(fe->gc, &fe->colours[colour]);
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gdk_draw_polygon(fe->pixmap, fe->gc, fill, points, npoints);
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sfree(points);
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}
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void draw_update(frontend *fe, int x, int y, int w, int h)
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{
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if (fe->bbox_l > x ) fe->bbox_l = x ;
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if (fe->bbox_r < x+w) fe->bbox_r = x+w;
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if (fe->bbox_u > y ) fe->bbox_u = y ;
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if (fe->bbox_d < y+h) fe->bbox_d = y+h;
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}
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void end_draw(frontend *fe)
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{
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gdk_gc_unref(fe->gc);
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fe->gc = NULL;
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if (fe->bbox_l < fe->bbox_r && fe->bbox_u < fe->bbox_d) {
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gdk_draw_pixmap(fe->area->window,
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fe->area->style->fg_gc[GTK_WIDGET_STATE(fe->area)],
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fe->pixmap,
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fe->bbox_l, fe->bbox_u,
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fe->bbox_l, fe->bbox_u,
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fe->bbox_r - fe->bbox_l, fe->bbox_d - fe->bbox_u);
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}
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}
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static void destroy(GtkWidget *widget, gpointer data)
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{
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gtk_main_quit();
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}
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static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
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{
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frontend *fe = (frontend *)data;
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if (!fe->pixmap)
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return TRUE;
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if (event->string[0] && !event->string[1] &&
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!midend_process_key(fe->me, 0, 0, event->string[0]))
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gtk_widget_destroy(fe->window);
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return TRUE;
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}
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static gint button_event(GtkWidget *widget, GdkEventButton *event,
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gpointer data)
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{
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frontend *fe = (frontend *)data;
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int button;
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if (!fe->pixmap)
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return TRUE;
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if (event->type != GDK_BUTTON_PRESS)
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return TRUE;
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if (event->button == 1)
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button = LEFT_BUTTON;
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else if (event->button == 2)
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button = MIDDLE_BUTTON;
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else if (event->button == 3)
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button = RIGHT_BUTTON;
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else
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return FALSE; /* don't even know what button! */
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if (!midend_process_key(fe->me, event->x, event->y, button))
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gtk_widget_destroy(fe->window);
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return TRUE;
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}
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static gint expose_area(GtkWidget *widget, GdkEventExpose *event,
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gpointer data)
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{
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frontend *fe = (frontend *)data;
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if (fe->pixmap) {
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gdk_draw_pixmap(widget->window,
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widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
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fe->pixmap,
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event->area.x, event->area.y,
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event->area.x, event->area.y,
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event->area.width, event->area.height);
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}
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return TRUE;
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}
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static gint configure_area(GtkWidget *widget,
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GdkEventConfigure *event, gpointer data)
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{
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frontend *fe = (frontend *)data;
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GdkGC *gc;
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fe->pixmap = gdk_pixmap_new(widget->window, fe->w, fe->h, -1);
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gc = gdk_gc_new(fe->area->window);
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gdk_gc_set_foreground(gc, &fe->colours[0]);
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gdk_draw_rectangle(fe->pixmap, gc, 1, 0, 0, fe->w, fe->h);
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gdk_gc_unref(gc);
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midend_redraw(fe->me);
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return TRUE;
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}
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static gint timer_func(gpointer data)
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{
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frontend *fe = (frontend *)data;
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if (fe->timer_active)
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midend_timer(fe->me, 0.02); /* may clear timer_active */
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return fe->timer_active;
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}
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void deactivate_timer(frontend *fe)
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{
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fe->timer_active = FALSE;
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}
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void activate_timer(frontend *fe)
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{
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gtk_timeout_add(20, timer_func, fe);
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fe->timer_active = TRUE;
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}
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static frontend *new_window(void)
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{
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frontend *fe;
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int x, y;
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fe = snew(frontend);
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fe->me = midend_new(fe);
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midend_new_game(fe->me, NULL);
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fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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{
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int i, ncolours;
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float *colours;
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gboolean *success;
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fe->colmap = gdk_colormap_get_system();
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colours = midend_colours(fe->me, &ncolours);
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fe->ncolours = ncolours;
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fe->colours = snewn(ncolours, GdkColor);
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for (i = 0; i < ncolours; i++) {
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fe->colours[i].red = colours[i*3] * 0xFFFF;
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fe->colours[i].green = colours[i*3+1] * 0xFFFF;
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fe->colours[i].blue = colours[i*3+2] * 0xFFFF;
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}
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success = snewn(ncolours, gboolean);
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gdk_colormap_alloc_colors(fe->colmap, fe->colours, ncolours,
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FALSE, FALSE, success);
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for (i = 0; i < ncolours; i++) {
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if (!success[i])
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g_error("couldn't allocate colour %d (#%02x%02x%02x)\n",
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i, fe->colours[i].red >> 8,
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fe->colours[i].green >> 8,
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fe->colours[i].blue >> 8);
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}
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}
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fe->area = gtk_drawing_area_new();
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midend_size(fe->me, &x, &y);
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gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
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fe->w = x;
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fe->h = y;
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gtk_container_add(GTK_CONTAINER(fe->window), fe->area);
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fe->pixmap = NULL;
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gtk_signal_connect(GTK_OBJECT(fe->window), "destroy",
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GTK_SIGNAL_FUNC(destroy), fe);
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gtk_signal_connect(GTK_OBJECT(fe->window), "key_press_event",
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GTK_SIGNAL_FUNC(key_event), fe);
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gtk_signal_connect(GTK_OBJECT(fe->area), "button_press_event",
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GTK_SIGNAL_FUNC(button_event), fe);
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gtk_signal_connect(GTK_OBJECT(fe->area), "expose_event",
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GTK_SIGNAL_FUNC(expose_area), fe);
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gtk_signal_connect(GTK_OBJECT(fe->area), "configure_event",
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GTK_SIGNAL_FUNC(configure_area), fe);
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gtk_widget_add_events(GTK_WIDGET(fe->area), GDK_BUTTON_PRESS_MASK);
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gtk_widget_show(fe->area);
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gtk_widget_show(fe->window);
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return fe;
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}
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int main(int argc, char **argv)
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{
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srand(time(NULL));
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gtk_init(&argc, &argv);
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(void) new_window();
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gtk_main();
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return 0;
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}
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