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 +1,216 @@
+#include "gui.h"
+#include "gui_defs.h"
+#include "x.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+static void default_repack(gui *gui, widget *_this);
+static void default_allocate(
+    gui *gui, widget *_this, int x, int y, int width, int height);
+static void default_add_child(
+    gui *_gui, widget *_this, widget *child, int position);
+static void default_hints(gui *g, widget *this, int *width, int *height);
+
+static void toplevel_list_append(struct gui *g, struct widget *e)
+{
+  struct widget_list *new;
+
+  new = calloc(1, sizeof(struct widget_list));
+  if (new == NULL) OOM;
+
+  new->item = e;
+
+  if (g->toplevel == NULL) {
+    g->toplevel = new;
+    new->last = new;
+    return;
+  }
+
+  g->toplevel->last->next = new;
+  g->toplevel->last = new;
+}
+
+widget *new_widget(struct gui *g, enum widget_type type, int size)
+{
+  struct widget *ret;
+
+  //glock(g);
+
+  ret = calloc(1, size);
+  if (ret == NULL) OOM;
+
+  ret->repack    = default_repack;
+  ret->add_child = default_add_child;
+  ret->allocate  = default_allocate;
+  ret->hints     = default_hints;
+  /* there is no default paint, on purpose */
+
+  ret->type      = type;
+  ret->id        = g->next_id;
+  g->next_id++;
+  ret->width     = 0;
+  ret->height    = 0;
+
+  /* add toplevel windows to g->toplevel */
+  if (type == TOPLEVEL_WINDOW)
+    toplevel_list_append(g, ret);
+
+  //gunlock(g);
+
+  return ret;
+}
+
+/*************************************************************************/
+/*                          internal functions                           */
+/*************************************************************************/
+
+void widget_add_child_internal(
+    gui *_gui, widget *parent, widget *child, int position)
+{
+  struct widget *p = parent;
+  struct widget *c = child;
+  struct widget_list *new;
+  struct widget_list *prev, *cur;
+  int i;
+
+  new = calloc(1, sizeof(struct widget_list));
+  if (new == NULL) OOM;
+
+  new->item = c;
+  c->parent = p;
+
+  prev = NULL;
+  cur = p->children;
+
+  for (i = 0; position < 0 || i < position; i++) {
+    if (cur == NULL) break;
+    prev = cur;
+    cur = cur->next;
+  }
+
+  /* TODO: warn/err if i != position+1? */
+
+  if (prev == NULL) {
+    /* new is at head */
+    new->next = p->children;
+    if (p->children != NULL) new->last = p->children->last;
+    else                     new->last = new;
+    p->children = new;
+    goto repack;
+  }
+
+  if (cur == NULL) {
+    /* new is at tail */
+    prev->next = new;
+    p->children->last = new;
+    goto repack;
+  }
+
+  /* new is between two existing items */
+  prev->next = new;
+  new->next = cur;
+
+repack:
+  send_event(_gui, REPACK, p->id);
+}
+
+/*************************************************************************/
+/*                           default functions                           */
+/*************************************************************************/
+
+static void default_repack(gui *gui, widget *_this)
+{
+  struct widget *this = _this;
+  return this->parent->repack(gui, this->parent);
+}
+
+static void default_add_child(
+    gui *_gui, widget *_this, widget *child, int position) 
+{
+  struct widget *this = _this;
+  WARN("cannot add child to widget %s\n", widget_name(this->type));
+}
+
+static void default_allocate(
+    gui *gui, widget *_this, int x, int y, int width, int height)
+{
+  struct widget *this = _this;
+  this->x = x;
+  this->y = y;
+  this->width = width;
+  this->height = height;
+}
+
+static void default_hints(gui *g, widget *this, int *width, int *height)
+{
+  *width = 1;
+  *height = 1;
+}
+
+/*************************************************************************/
+/*                             utils functions                           */
+/*************************************************************************/
+
+void widget_add_child(gui *_gui, widget *parent, widget *child, int position)
+{
+  struct widget *this = parent;
+  glock(_gui);
+  this->add_child(_gui, parent, child, position);
+  gunlock(_gui);
+}
+
+static const char *names[] = {
+  "TOPLEVEL_WINDOW", "CONTAINER", "TEXT_LIST", "XY_PLOT", "BUTTON", "LABEL"
+};
+const char *widget_name(enum widget_type type)
+{
+  switch (type) {
+  default: break;
+  case TOPLEVEL_WINDOW:
+  case CONTAINER:
+  case TEXT_LIST:
+  case XY_PLOT:
+  case BUTTON:
+  case LABEL:
+    return names[type];
+  }
+  return "UNKNOWN (error)";
+}
+
+/*************************************************************************/
+/*                             find a widget                             */
+/*************************************************************************/
+
+/* TODO: optimize traversal and also use a cache */
+struct widget *_find_widget(struct widget *c, int id)
+{
+  struct widget_list *l;
+  struct widget *ret;
+  if (c == NULL) return NULL;
+  if (c->id == id) return c;
+  l = c->children;
+  while (l) {
+    ret = _find_widget(l->item, id);
+    if (ret != NULL) return ret;
+    l = l->next;
+  }
+  return NULL;
+}
+
+struct widget *find_widget(struct gui *g, int id)
+{
+  struct widget_list *l;
+  struct widget *ret;
+
+  l = g->toplevel;
+
+  while (l) {
+    ret = _find_widget(l->item, id);
+    if (ret != NULL) return ret;
+    l = l->next;
+  }
+
+  return NULL;
+}