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authorChristopher James Lahey <clahey@ximian.com>2002-01-10 07:31:06 +0800
committerChris Lahey <clahey@src.gnome.org>2002-01-10 07:31:06 +0800
commitb70d7b029286309bcd19bd2e3efd53fdd62705a9 (patch)
treed3479f695867f3475116bf64b46532e9303c1a55
parent9603762038cd054c1195e9a7d3939dce412a4f41 (diff)
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Made the header item here handle horizontal scrolling when adding a
2002-01-09 Christopher James Lahey <clahey@ximian.com> * e-table-header-item.c, e-table-header-item.h (scroll_timeout): Made the header item here handle horizontal scrolling when adding a column. svn path=/trunk/; revision=15278
-rw-r--r--widgets/table/e-table-header-item.c173
-rw-r--r--widgets/table/e-table-header-item.h7
2 files changed, 157 insertions, 23 deletions
diff --git a/widgets/table/e-table-header-item.c b/widgets/table/e-table-header-item.c
index f854f98e8d..07e807e773 100644
--- a/widgets/table/e-table-header-item.c
+++ b/widgets/table/e-table-header-item.c
@@ -101,12 +101,24 @@ enum {
ARG_TREE,
};
+enum {
+ ET_SCROLL_UP = 1 << 0,
+ ET_SCROLL_DOWN = 1 << 1,
+ ET_SCROLL_LEFT = 1 << 2,
+ ET_SCROLL_RIGHT = 1 << 3
+};
+
+static void scroll_off (ETableHeaderItem *ethi);
+static void scroll_on (ETableHeaderItem *ethi, guint scroll_direction);
+
static void
ethi_destroy (GtkObject *object){
ETableHeaderItem *ethi = E_TABLE_HEADER_ITEM (object);
ethi_drop_table_header (ethi);
+ scroll_off (ethi);
+
if (ethi->dnd_code) {
g_free (ethi->dnd_code);
ethi->dnd_code = NULL;
@@ -475,12 +487,12 @@ make_shaped_window_from_xpm (const char **xpm)
}
static void
-ethi_add_drop_marker (ETableHeaderItem *ethi, int col)
+ethi_add_drop_marker (ETableHeaderItem *ethi, int col, gboolean recreate)
{
int rx, ry;
int x;
- if (ethi->drag_mark == col)
+ if (!recreate && ethi->drag_mark == col)
return;
ethi->drag_mark = col;
@@ -498,6 +510,9 @@ ethi_add_drop_marker (ETableHeaderItem *ethi, int col)
GTK_WIDGET (GNOME_CANVAS_ITEM (ethi)->canvas)->window,
&rx, &ry);
+ rx -= gtk_layout_get_hadjustment (GTK_LAYOUT (GNOME_CANVAS_ITEM (ethi)->canvas))->value;
+ ry -= gtk_layout_get_vadjustment (GTK_LAYOUT (GNOME_CANVAS_ITEM (ethi)->canvas))->value;
+
gtk_widget_set_uposition (arrow_down, rx + x - ARROW_PTR, ry - ARROW_DOWN_HEIGHT);
gtk_widget_show_all (arrow_down);
@@ -568,26 +583,14 @@ moved (ETableHeaderItem *ethi, guint col, guint model_col)
}
#endif
-static gboolean
-ethi_drag_motion (GtkObject *canvas, GdkDragContext *context,
- gint x, gint y, guint time,
- ETableHeaderItem *ethi)
+static void
+do_drag_motion(ETableHeaderItem *ethi,
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ guint time,
+ gboolean recreate)
{
- char *droptype, *headertype;
-
- gdk_drag_status (context, 0, time);
-
- droptype = gdk_atom_name (GPOINTER_TO_INT (context->targets->data));
- headertype = g_strdup_printf ("%s-%s", TARGET_ETABLE_COL_TYPE,
- ethi->dnd_code);
-
- if (strcmp (droptype, headertype) != 0) {
- g_free (headertype);
- return FALSE;
- }
-
- g_free (headertype);
-
if ((x >= 0) && (x <= (ethi->width)) &&
(y >= 0) && (y <= (ethi->height))){
int col;
@@ -605,7 +608,7 @@ ethi_drag_motion (GtkObject *canvas, GdkDragContext *context,
if (ethi->drag_col != -1)
ethi_remove_destroy_marker (ethi);
- ethi_add_drop_marker (ethi, col);
+ ethi_add_drop_marker (ethi, col, recreate);
gdk_drag_status (context, context->suggested_action, time);
} else {
ethi_remove_drop_marker (ethi);
@@ -617,6 +620,128 @@ ethi_drag_motion (GtkObject *canvas, GdkDragContext *context,
if (ethi->drag_col != -1)
ethi_add_destroy_marker (ethi);
}
+}
+
+static gboolean
+scroll_timeout (gpointer data)
+{
+ ETableHeaderItem *ethi = data;
+ int dx = 0;
+ GtkAdjustment *h, *v;
+ double value;
+
+ if (ethi->scroll_direction & ET_SCROLL_RIGHT)
+ dx += 20;
+ if (ethi->scroll_direction & ET_SCROLL_LEFT)
+ dx -= 20;
+
+ h = GTK_LAYOUT(GNOME_CANVAS_ITEM (ethi)->canvas)->hadjustment;
+ v = GTK_LAYOUT(GNOME_CANVAS_ITEM (ethi)->canvas)->vadjustment;
+
+ value = h->value;
+
+ gtk_adjustment_set_value(h, CLAMP(h->value + dx, h->lower, h->upper - h->page_size));
+
+ if (h->value != value)
+ do_drag_motion(ethi,
+ ethi->last_drop_context,
+ ethi->last_drop_x + h->value,
+ ethi->last_drop_y + v->value,
+ ethi->last_drop_time,
+ TRUE);
+
+ return TRUE;
+}
+
+static void
+scroll_on (ETableHeaderItem *ethi, guint scroll_direction)
+{
+ if (ethi->scroll_idle_id == 0 || scroll_direction != ethi->scroll_direction) {
+ if (ethi->scroll_idle_id != 0)
+ g_source_remove (ethi->scroll_idle_id);
+ ethi->scroll_direction = scroll_direction;
+ ethi->scroll_idle_id = g_timeout_add (100, scroll_timeout, ethi);
+ }
+}
+
+static void
+scroll_off (ETableHeaderItem *ethi)
+{
+ if (ethi->scroll_idle_id) {
+ g_source_remove (ethi->scroll_idle_id);
+ ethi->scroll_idle_id = 0;
+ }
+}
+
+static void
+context_destroyed (gpointer data)
+{
+ ETableHeaderItem *ethi = data;
+ if (!GTK_OBJECT_DESTROYED (ethi)) {
+ ethi->last_drop_x = 0;
+ ethi->last_drop_y = 0;
+ ethi->last_drop_time = 0;
+ ethi->last_drop_context = NULL;
+ scroll_off (ethi);
+ }
+ gtk_object_unref (GTK_OBJECT (ethi));
+}
+
+static void
+context_connect (ETableHeaderItem *ethi, GdkDragContext *context)
+{
+ if (g_dataset_get_data (context, "e-table-header-item") == NULL) {
+ gtk_object_ref (GTK_OBJECT (ethi));
+ g_dataset_set_data_full (context, "e-table-header-item", ethi, context_destroyed);
+ }
+}
+
+static gboolean
+ethi_drag_motion (GtkWidget *widget, GdkDragContext *context,
+ gint x, gint y, guint time,
+ ETableHeaderItem *ethi)
+{
+ char *droptype, *headertype;
+ guint direction = 0;
+
+ gdk_drag_status (context, 0, time);
+
+ droptype = gdk_atom_name (GPOINTER_TO_INT (context->targets->data));
+ headertype = g_strdup_printf ("%s-%s", TARGET_ETABLE_COL_TYPE,
+ ethi->dnd_code);
+
+ if (strcmp (droptype, headertype) != 0) {
+ g_free (headertype);
+ return FALSE;
+ }
+
+ g_free (headertype);
+
+ x -= widget->allocation.x;
+ y -= widget->allocation.y;
+
+ if (x < 20)
+ direction |= ET_SCROLL_LEFT;
+ if (x > widget->allocation.width - 20)
+ direction |= ET_SCROLL_RIGHT;
+
+ ethi->last_drop_x = x;
+ ethi->last_drop_y = y;
+ ethi->last_drop_time = time;
+ ethi->last_drop_context = context;
+ context_connect (ethi, context);
+
+ do_drag_motion (ethi,
+ context,
+ x + GTK_LAYOUT(widget)->hadjustment->value,
+ y + GTK_LAYOUT(widget)->vadjustment->value,
+ time,
+ FALSE);
+
+ if (direction != 0)
+ scroll_on (ethi, direction);
+ else
+ scroll_off (ethi);
return TRUE;
}
@@ -631,6 +756,7 @@ ethi_drag_end (GtkWidget *canvas, GdkDragContext *context, ETableHeaderItem *eth
ethi_remove_drop_marker (ethi);
ethi_remove_destroy_marker (ethi);
ethi->drag_col = -1;
+ scroll_off (ethi);
}
static void
@@ -717,7 +843,7 @@ ethi_drag_drop (GtkWidget *canvas,
col = ethi_find_col_by_x_nearest (ethi, x);
- ethi_add_drop_marker (ethi, col);
+ ethi_add_drop_marker (ethi, col, FALSE);
ethi->drop_col = col;
@@ -728,6 +854,7 @@ ethi_drag_drop (GtkWidget *canvas,
}
}
gtk_drag_finish (context, successful, successful, time);
+ scroll_off (ethi);
return successful;
}
diff --git a/widgets/table/e-table-header-item.h b/widgets/table/e-table-header-item.h
index 73df683029..38d0aa1791 100644
--- a/widgets/table/e-table-header-item.h
+++ b/widgets/table/e-table-header-item.h
@@ -84,6 +84,13 @@ typedef struct {
*/
ETableSortInfo *sort_info;
+ guint scroll_direction : 4;
+ int last_drop_x;
+ int last_drop_y;
+ int last_drop_time;
+ GdkDragContext *last_drop_context;
+ int scroll_idle_id;
+
/* For adding fields. */
ETableHeader *full_header;
ETable *table;