first version of the generic gui for the tracer

2016-04-11 11:18:26 +02:00
parent ee6789cdde
commit 2bb04f0105
18 changed files with 1737 additions and 1 deletions
@@ -0,0 +1,165 @@
+#include "gui.h"
+#include "gui_defs.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdarg.h>
+
+/*****************************************************************/
+/*                       generic functions                       */
+/*****************************************************************/
+
+static void event_list_append(struct gui *g, struct event *e)
+{
+  struct event_list *new;
+
+  new = calloc(1, sizeof(struct event_list));
+  if (new == NULL) OOM;
+
+  new->item = e;
+
+  if (g->queued_events == NULL) {
+    g->queued_events = new;
+    new->last = new;
+    return;
+  }
+
+  g->queued_events->last->next = new;
+  g->queued_events->last = new;
+}
+
+static void free_event(struct event *e)
+{
+  switch (e->type) {
+  case REPACK: /* nothing */ break;
+  case DIRTY: /* nothing */ break;
+  }
+  free(e);
+}
+
+/*****************************************************************/
+/*                         sending events                        */
+/*****************************************************************/
+
+static event *new_event_repack(int id)
+{
+  struct repack_event *ret;
+  ret = calloc(1, sizeof(struct repack_event));
+  if (ret == NULL) OOM;
+  ret->id = id;
+  return ret;
+}
+
+static event *new_event_dirty(int id)
+{
+  struct dirty_event *ret;
+  ret = calloc(1, sizeof(struct dirty_event));
+  if (ret == NULL) OOM;
+  ret->id = id;
+  return ret;
+}
+
+void send_event(gui *_gui, enum event_type type, ...)
+{
+printf("send_event %d\n", type);
+  struct gui *g = _gui;
+  int do_write = 0;
+  va_list ap;
+  struct event *e;
+
+  if (g->queued_events == NULL) do_write = 1;
+
+  va_start(ap, type);
+
+  switch (type) {
+  case REPACK: {
+    int id;
+    id = va_arg(ap, int);
+    e = new_event_repack(id);
+    break;
+  }
+  case DIRTY: {
+    int id;
+    id = va_arg(ap, int);
+    e = new_event_dirty(id);
+    break;
+  }
+  }
+
+  va_end(ap);
+
+  e->type = type;
+
+  event_list_append(g, e);
+
+  if (do_write) {
+    char c = 1;
+    if (write(g->event_pipe[1], &c, 1) != 1)
+      ERR("error writing to pipe: %s\n", strerror(errno));
+  }
+}
+
+/*****************************************************************/
+/*                      processing events                        */
+/*****************************************************************/
+
+static void repack_event(struct gui *g, int id)
+{
+  struct widget *w = find_widget(g, id);
+  if (w == NULL) { WARN("widget id %d not found\n", id); return; }
+  w->repack(g, w);
+}
+
+/* TODO: put that function somewhere else? */
+static struct toplevel_window_widget *get_toplevel_window(struct widget *w)
+{
+  while (w != NULL) {
+    if (w->type == TOPLEVEL_WINDOW)
+      return (struct toplevel_window_widget *)w;
+    w = w->parent;
+  }
+  return NULL;
+}
+
+static void dirty_event(struct gui *g, int id)
+{
+  struct widget *w = find_widget(g, id);
+  struct toplevel_window_widget *win;
+  if (w == NULL) { WARN("widget id %d not found\n", id); return; }
+  win = get_toplevel_window(w);
+  if (win == NULL)
+    { WARN("widget id %d not contained in a window\n", id); return; }
+  g->xwin = win->x;
+  w->paint(g, w);
+  g->xwin = NULL;
+  g->repainted = 1;
+}
+
+static void process_event(struct gui *g, struct event *e)
+{
+printf("processing event type %d\n", e->type);
+  switch (e->type) {
+  case REPACK: repack_event(g, ((struct repack_event *)e)->id); break;
+  case DIRTY: dirty_event(g, ((struct dirty_event *)e)->id); break;
+  }
+}
+
+/* TODO: events' compression */
+void gui_events(gui *_gui)
+{
+  struct gui *g = _gui;
+
+printf("gui_events START: head %p\n", g->queued_events);
+
+  while (g->queued_events) {
+    struct event_list *cur = g->queued_events;
+    g->queued_events = cur->next;
+    if (g->queued_events) g->queued_events->last = cur->last;
+    process_event(g, cur->item);
+    free_event(cur->item);
+    free(cur);
+  }
+printf("gui_events DONE\n");
+}