GUI timeline widget

2016-05-12 17:03:07 +02:00
parent 52fae6a830
commit 944dad4caa
5 changed files with 182 additions and 3 deletions
@@ -0,0 +1,150 @@
+#include "gui.h"
+#include "gui_defs.h"
+#include "x.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+static void paint(gui *_gui, widget *_this)
+{
+  struct gui *g = _gui;
+  struct timeline_widget *this = _this;
+  int i;
+  int j;
+
+  for (i = 0; i < this->n; i++) {
+    x_fill_rectangle(g->x, g->xwin, this->s[i].background,
+        this->common.x, this->common.y + i * this->subline_height,
+        this->common.width, this->subline_height);
+    for (j = 0; j < this->s[i].width; j++)
+      if (this->s[i].color[j] != -1)
+        x_draw_line(g->x, g->xwin, this->s[i].color[j],
+            this->common.x + j, this->common.y + i * this->subline_height,
+            this->common.x + j, this->common.y + this->subline_height -1
+                + i * this->subline_height);
+  }
+
+  LOGD("PAINT timeline xywh %d %d %d %d\n", this->common.x, this->common.y, this->common.width, this->common.height);
+}
+
+static void hints(gui *_gui, widget *_w, int *width, int *height)
+{
+  struct timeline_widget *w = _w;
+  *width = w->wanted_width;
+  *height = w->n * w->subline_height;
+  LOGD("HINTS timeline wh %d %d\n", *width, *height);
+}
+
+static void allocate(gui *_gui, widget *_this,
+    int x, int y, int width, int height)
+{
+  struct timeline_widget *this = _this;
+  int i;
+  int j;
+  this->common.x = x;
+  this->common.y = y;
+  this->common.width = width;
+  this->common.height = height;
+  LOGD("ALLOCATE timeline %p xywh %d %d %d %d\n", this, x, y, width, height);
+  for (i = 0; i < this->n; i++) {
+    this->s[i].width = width;
+    this->s[i].color = realloc(this->s[i].color, width * sizeof(int));
+    if (this->s[i].color == NULL) abort();
+    for (j = 0; j < width; j++) this->s[i].color[j] = -1;
+  }
+  gui_notify(_gui, "resize", _this, &width);
+}
+
+/*************************************************************************/
+/*                           creation function                           */
+/*************************************************************************/
+
+widget *new_timeline(gui *_gui, int width, int number_of_sublines,
+    int subline_height)
+{
+  struct gui *g = _gui;
+  struct timeline_widget *w;
+  int i;
+  int j;
+
+  glock(g);
+
+  w = new_widget(g, TIMELINE, sizeof(struct timeline_widget));
+
+  w->wanted_width = width;
+  w->n = number_of_sublines;
+  w->s = calloc(w->n, sizeof(struct timeline_subline)); if (w->s == NULL) OOM;
+  w->subline_height = subline_height;
+
+  /* initialize colors */
+  for (i = 0; i < w->n; i++) {
+    w->s[i].width = width;
+    w->s[i].color = calloc(width, sizeof(int));
+    if (w->s[i].color == NULL) abort();
+    for (j = 0; j < width; j++) w->s[i].color[j] = -1;
+    w->s[i].background = BACKGROUND_COLOR;
+  }
+
+  w->common.paint = paint;
+  w->common.hints = hints;
+  w->common.allocate = allocate;
+
+  gunlock(g);
+
+  return w;
+}
+
+/*************************************************************************/
+/*                           public functions                            */
+/*************************************************************************/
+
+void timeline_clear(gui *_gui, widget *_this)
+{
+  struct gui *g = _gui;
+  struct timeline_widget *this = _this;
+  int i;
+  int j;
+
+  glock(g);
+
+  for (i = 0; i < this->n; i++)
+    for (j = 0; j < this->s[i].width; j++)
+      this->s[i].color[j] = -1;
+
+  send_event(g, DIRTY, this->common.id);
+
+  gunlock(g);
+}
+
+void timeline_add_points(gui *_gui, widget *_this, int subline, int color,
+    int *x, int len)
+{
+  struct gui *g = _gui;
+  struct timeline_widget *this = _this;
+  int i;
+
+  glock(g);
+
+  for (i = 0; i < len; i++) {
+    if (x[i] >= this->s[subline].width) { WARN("out of bounds\n"); continue; }
+    this->s[subline].color[x[i]] = color;
+  }
+
+  send_event(g, DIRTY, this->common.id);
+
+  gunlock(g);
+}
+
+void timeline_set_subline_background_color(gui *_gui, widget *_this,
+    int subline, int color)
+{
+  struct gui *g = _gui;
+  struct timeline_widget *this = _this;
+
+  glock(g);
+
+  this->s[subline].background = color;
+
+  send_event(g, DIRTY, this->common.id);
+
+  gunlock(g);
+}