/*
* gtk.c: GTK front end for my puzzle collection.
+ *
+ * TODO:
+ *
+ * - Handle resizing, probably just by forbidding it.
*/
#include <stdio.h>
#include <stdlib.h>
+#include <time.h>
#include <stdarg.h>
+#include <gtk/gtk.h>
+
#include "puzzles.h"
+/* ----------------------------------------------------------------------
+ * Error reporting functions used elsewhere.
+ */
+
void fatal(char *fmt, ...)
{
va_list 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;
+};
+
+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;
+
+ if (!fe->pixmap)
+ return TRUE;
+
+ if (event->string[0] && !event->string[1] &&
+ !midend_process_key(fe->me, 0, 0, event->string[0]))
+ 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 == 1)
+ button = LEFT_BUTTON;
+ else if (event->button == 2)
+ button = MIDDLE_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;
+
+ 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)
+{
+ fe->timer_active = FALSE;
+}
+
+void activate_timer(frontend *fe)
+{
+ gtk_timeout_add(20, timer_func, fe);
+ fe->timer_active = TRUE;
+}
+
+static frontend *new_window(void)
+{
+ frontend *fe;
+ int x, y;
+
+ fe = snew(frontend);
+
+ fe->me = midend_new(fe);
+ midend_new_game(fe->me, NULL);
+
+ fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+
+ {
+ 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_container_add(GTK_CONTAINER(fe->window), fe->area);
+
+ fe->pixmap = NULL;
+
+ 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;
+}
~ian / sgt-puzzles.git / blobdiff