Added a height_cache idle loop so that the height_cache will be validated

2000-05-04  Christopher James Lahey  <clahey@helixcode.com>

	* e-table-item.c, e-table-item.h: Added a height_cache idle loop
	so that the height_cache will be validated in the idle loop.

svn path=/trunk/; revision=2794

3 files changed, 45 insertions, 2 deletions

diff --git a/widgets/e-table/ChangeLog b/widgets/e-table/ChangeLog
index 0a5adcf0ac..9d367ae392 100644
--- a/widgets/e-table/ChangeLog
+++ b/widgets/e-table/ChangeLog
@@ -1,5 +1,10 @@
 2000-05-04  Christopher James Lahey  <clahey@helixcode.com>
 
+	* e-table-item.c, e-table-item.h: Added a height_cache idle loop
+	so that the height_cache will be validated in the idle loop.
+
+2000-05-04  Christopher James Lahey  <clahey@helixcode.com>
+
 	* e-table-sorted-variable.c: Load all the data to be sorted by
 	before actually doing the sort.
 
diff --git a/widgets/e-table/e-table-item.c b/widgets/e-table/e-table-item.c
index ccc1eba5d8..cae22ec081 100644
--- a/widgets/e-table/e-table-item.c
+++ b/widgets/e-table/e-table-item.c
@@ -48,6 +48,7 @@ enum {
 };
 
 static int eti_get_height (ETableItem *eti);
+static int eti_row_height (ETableItem *eti, int row);
 
 static gboolean
 eti_editing (ETableItem *eti)
@@ -298,12 +299,40 @@ eti_row_height_real (ETableItem *eti, int row)
 	return max_h;
 }
 
+static gboolean
+height_cache_idle(ETableItem *eti)
+{
+	int changed = 0;
+	int i;
+	if (!eti->height_cache) {
+		eti->height_cache = g_new(int, eti->rows);
+	}
+	for (i = eti->height_cache_idle_count; i < eti->rows; i++) {
+		if (eti->height_cache[i] == -1) {
+			eti_row_height(eti, i);
+			changed ++;
+			if (changed >= 20)
+				break;
+		}
+	}
+	if (changed >= 20) {
+		eti->height_cache_idle_count = i;
+		return TRUE;
+	}
+	eti->height_cache_idle_id = 0;
+	return FALSE;	
+}
+
 static void
 free_height_cache (ETableItem *eti)
 {
 	if (eti->height_cache)
 		g_free (eti->height_cache);
 	eti->height_cache = NULL;
+	eti->height_cache_idle_count = 0;
+	
+	if (eti->height_cache_idle_id == 0)
+		eti->height_cache_idle_id = g_idle_add_full(G_PRIORITY_LOW, (GSourceFunc) height_cache_idle, eti, NULL);
 }
 
 static void
@@ -375,8 +404,10 @@ eti_get_height (ETableItem *eti)
 			if (eti->height_cache) {
 				height = 0;
 				for (row = 0; row < rows; row++) {
-					if (eti->height_cache[row] == -1)
-						height += row_height + 1;
+					if (eti->height_cache[row] == -1) {
+						height += (row_height + 1) * (rows - row);
+						break;
+					}
 					else
 						height += eti->height_cache[row] + 1;
 				}
@@ -628,6 +659,9 @@ eti_destroy (GtkObject *object)
 
 	g_slist_free (eti->selection);
 	
+	if (eti->height_cache_idle_id)
+		g_source_remove(eti->height_cache_idle_id);
+	
 	if (GTK_OBJECT_CLASS (eti_parent_class)->destroy)
 		(*GTK_OBJECT_CLASS (eti_parent_class)->destroy) (object);
 }
@@ -706,6 +740,8 @@ eti_init (GnomeCanvasItem *item)
 	eti->height = 0;
 
 	eti->height_cache = NULL;
+	eti->height_cache_idle_id = 0;
+	eti->height_cache_idle_count = 0;
 	
 	eti->length_threshold = -1;
 	eti->renderers_can_change_size = 1;
diff --git a/widgets/e-table/e-table-item.h b/widgets/e-table/e-table-item.h
index 1e451e64fe..696bf465e6 100644
--- a/widgets/e-table/e-table-item.h
+++ b/widgets/e-table/e-table-item.h
@@ -51,6 +51,8 @@ typedef struct {
 	int              n_cells;
 
 	int             *height_cache;
+	int              height_cache_idle_id;
+	int              height_cache_idle_count;
 
 	/*
 	 * Lengh Threshold: above this, we stop computing correctly