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-rw-r--r--widgets/misc/e-reflow.c172
-rw-r--r--widgets/misc/e-reflow.h6
2 files changed, 128 insertions, 50 deletions
diff --git a/widgets/misc/e-reflow.c b/widgets/misc/e-reflow.c
index eee8e695c7..ba7bf36c4d 100644
--- a/widgets/misc/e-reflow.c
+++ b/widgets/misc/e-reflow.c
@@ -24,6 +24,7 @@
#include <gnome.h>
#include <math.h>
#include "e-reflow.h"
+#include "e-text.h"
#include <e-util/e-canvas-utils.h>
#include <e-util/e-canvas.h>
#include <e-util/e-util.h>
@@ -42,6 +43,7 @@ static void e_reflow_update (GnomeCanvasItem *item, double affine[6], ArtSVP *cl
static double e_reflow_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item);
static void e_reflow_reflow (GnomeCanvasItem *item, int flags);
static void e_reflow_real_add_item(EReflow *e_reflow, GnomeCanvasItem *item);
+static void set_empty(EReflow *e_reflow);
static void e_reflow_resize_children (GnomeCanvasItem *item);
@@ -56,7 +58,8 @@ enum {
ARG_0,
ARG_MINIMUM_WIDTH,
ARG_WIDTH,
- ARG_HEIGHT
+ ARG_HEIGHT,
+ ARG_EMPTY_MESSAGE,
};
GtkType
@@ -87,58 +90,63 @@ e_reflow_get_type (void)
static void
e_reflow_class_init (EReflowClass *klass)
{
- GtkObjectClass *object_class;
- GnomeCanvasItemClass *item_class;
+ GtkObjectClass *object_class;
+ GnomeCanvasItemClass *item_class;
- object_class = (GtkObjectClass*) klass;
- item_class = (GnomeCanvasItemClass *) klass;
+ object_class = (GtkObjectClass*) klass;
+ item_class = (GnomeCanvasItemClass *) klass;
- parent_class = gtk_type_class (gnome_canvas_group_get_type ());
+ parent_class = gtk_type_class (gnome_canvas_group_get_type ());
- gtk_object_add_arg_type ("EReflow::minimum_width", GTK_TYPE_DOUBLE,
- GTK_ARG_READWRITE, ARG_MINIMUM_WIDTH);
- gtk_object_add_arg_type ("EReflow::width", GTK_TYPE_DOUBLE,
- GTK_ARG_READABLE, ARG_WIDTH);
- gtk_object_add_arg_type ("EReflow::height", GTK_TYPE_DOUBLE,
- GTK_ARG_READWRITE, ARG_HEIGHT);
-
- klass->add_item = e_reflow_real_add_item;
+ gtk_object_add_arg_type ("EReflow::minimum_width", GTK_TYPE_DOUBLE,
+ GTK_ARG_READWRITE, ARG_MINIMUM_WIDTH);
+ gtk_object_add_arg_type ("EReflow::width", GTK_TYPE_DOUBLE,
+ GTK_ARG_READABLE, ARG_WIDTH);
+ gtk_object_add_arg_type ("EReflow::height", GTK_TYPE_DOUBLE,
+ GTK_ARG_READWRITE, ARG_HEIGHT);
+ gtk_object_add_arg_type ("EReflow::empty_message", GTK_TYPE_STRING,
+ GTK_ARG_READWRITE, ARG_EMPTY_MESSAGE);
+
+ klass->add_item = e_reflow_real_add_item;
- object_class->set_arg = e_reflow_set_arg;
- object_class->get_arg = e_reflow_get_arg;
- object_class->destroy = e_reflow_destroy;
+ object_class->set_arg = e_reflow_set_arg;
+ object_class->get_arg = e_reflow_get_arg;
+ object_class->destroy = e_reflow_destroy;
- /* GnomeCanvasItem method overrides */
- item_class->event = e_reflow_event;
- item_class->realize = e_reflow_realize;
- item_class->unrealize = e_reflow_unrealize;
- item_class->draw = e_reflow_draw;
- item_class->update = e_reflow_update;
- item_class->point = e_reflow_point;
+ /* GnomeCanvasItem method overrides */
+ item_class->event = e_reflow_event;
+ item_class->realize = e_reflow_realize;
+ item_class->unrealize = e_reflow_unrealize;
+ item_class->draw = e_reflow_draw;
+ item_class->update = e_reflow_update;
+ item_class->point = e_reflow_point;
}
static void
e_reflow_init (EReflow *reflow)
{
- reflow->items = NULL;
- reflow->columns = NULL;
- reflow->column_width = 150;
+ reflow->items = NULL;
+ reflow->columns = NULL;
+ reflow->column_width = 150;
+
+ reflow->minimum_width = 10;
+ reflow->width = 10;
+ reflow->height = 10;
+ reflow->idle = 0;
- reflow->minimum_width = 10;
- reflow->width = 10;
- reflow->height = 10;
- reflow->idle = 0;
+ reflow->empty_message = NULL;
+ reflow->empty_text = NULL;
- reflow->column_drag = FALSE;
+ reflow->column_drag = FALSE;
- reflow->need_height_update = FALSE;
- reflow->need_column_resize = FALSE;
+ reflow->need_height_update = FALSE;
+ reflow->need_column_resize = FALSE;
- reflow->default_cursor_shown = TRUE;
- reflow->arrow_cursor = NULL;
- reflow->default_cursor = NULL;
+ reflow->default_cursor_shown = TRUE;
+ reflow->arrow_cursor = NULL;
+ reflow->default_cursor = NULL;
- e_canvas_item_set_reflow_callback(GNOME_CANVAS_ITEM(reflow), e_reflow_reflow);
+ e_canvas_item_set_reflow_callback(GNOME_CANVAS_ITEM(reflow), e_reflow_reflow);
}
static void
@@ -152,13 +160,20 @@ e_reflow_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
switch (arg_id){
case ARG_HEIGHT:
- e_reflow->height = GTK_VALUE_DOUBLE (*arg);
- e_canvas_item_request_reflow(item);
- break;
+ e_reflow->height = GTK_VALUE_DOUBLE (*arg);
+ e_canvas_item_request_reflow(item);
+ break;
case ARG_MINIMUM_WIDTH:
e_reflow->minimum_width = GTK_VALUE_DOUBLE (*arg);
+ if (GNOME_CANVAS_ITEM_REALIZED & GTK_OBJECT_FLAGS(o))
+ set_empty(e_reflow);
e_canvas_item_request_reflow(item);
break;
+ case ARG_EMPTY_MESSAGE:
+ g_free(e_reflow->empty_message);
+ e_reflow->empty_message = g_strdup(GTK_VALUE_STRING (*arg));
+ if (GNOME_CANVAS_ITEM_REALIZED & GTK_OBJECT_FLAGS(o))
+ set_empty(e_reflow);
}
}
@@ -171,17 +186,20 @@ e_reflow_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
switch (arg_id) {
case ARG_MINIMUM_WIDTH:
- GTK_VALUE_DOUBLE (*arg) = e_reflow->minimum_width;
- break;
+ GTK_VALUE_DOUBLE (*arg) = e_reflow->minimum_width;
+ break;
case ARG_WIDTH:
- GTK_VALUE_DOUBLE (*arg) = e_reflow->width;
- break;
+ GTK_VALUE_DOUBLE (*arg) = e_reflow->width;
+ break;
case ARG_HEIGHT:
- GTK_VALUE_DOUBLE (*arg) = e_reflow->height;
- break;
+ GTK_VALUE_DOUBLE (*arg) = e_reflow->height;
+ break;
+ case ARG_EMPTY_MESSAGE:
+ GTK_VALUE_STRING (*arg) = g_strdup(e_reflow->empty_message);
+ break;
default:
- arg->type = GTK_TYPE_INVALID;
- break;
+ arg->type = GTK_TYPE_INVALID;
+ break;
}
}
@@ -193,6 +211,8 @@ e_reflow_destroy (GtkObject *object)
g_list_foreach(reflow->items, (GFunc) gtk_object_unref, NULL);
g_list_free(reflow->items);
reflow->items = NULL;
+
+ g_free(reflow->empty_message);
GTK_OBJECT_CLASS(parent_class)->destroy (object);
}
@@ -221,6 +241,8 @@ e_reflow_realize (GnomeCanvasItem *item)
NULL);
}
+ set_empty(e_reflow);
+
e_canvas_item_request_reflow(item);
adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas));
@@ -456,6 +478,7 @@ e_reflow_real_add_item(EReflow *e_reflow, GnomeCanvasItem *item)
gnome_canvas_item_set(item,
"width", (double) e_reflow->column_width,
NULL);
+ e_reflow_post_add_item(e_reflow, item);
e_canvas_item_request_reflow(item);
}
@@ -678,7 +701,7 @@ _reflow( EReflow *e_reflow )
if (e_reflow->items == NULL) {
e_reflow->columns = NULL;
- e_reflow->column_count = 1;
+ e_reflow->column_count = 0;
return;
}
@@ -708,6 +731,49 @@ _reflow( EReflow *e_reflow )
}
static void
+set_empty(EReflow *e_reflow)
+{
+ if (e_reflow->items == NULL) {
+ if (e_reflow->empty_text) {
+ if (e_reflow->empty_message) {
+ gnome_canvas_item_set(e_reflow->empty_text,
+ "width", e_reflow->minimum_width,
+ "text", e_reflow->empty_message,
+ NULL);
+ e_canvas_item_move_absolute(e_reflow->empty_text,
+ e_reflow->minimum_width / 2,
+ 0);
+ } else {
+ gtk_object_destroy(GTK_OBJECT(e_reflow->empty_text));
+ e_reflow->empty_text = NULL;
+ }
+ } else {
+ if (e_reflow->empty_message)
+ e_reflow->empty_text =
+ gnome_canvas_item_new(GNOME_CANVAS_GROUP(e_reflow),
+ e_text_get_type(),
+ "anchor", GTK_ANCHOR_N,
+ "width", e_reflow->minimum_width,
+ "clip", TRUE,
+ "use_ellipsis", TRUE,
+ "font_gdk", GTK_WIDGET(GNOME_CANVAS_ITEM(e_reflow)->canvas)->style->font,
+ "fill_color", "black",
+ "justification", GTK_JUSTIFY_CENTER,
+ "text", e_reflow->empty_message,
+ NULL);
+ e_canvas_item_move_absolute(e_reflow->empty_text,
+ e_reflow->minimum_width / 2,
+ 0);
+ }
+ } else {
+ if (e_reflow->empty_text) {
+ gtk_object_destroy(GTK_OBJECT(e_reflow->empty_text));
+ e_reflow->empty_text = NULL;
+ }
+ }
+}
+
+static void
e_reflow_reflow( GnomeCanvasItem *item, int flags )
{
EReflow *e_reflow = E_REFLOW(item);
@@ -774,3 +840,9 @@ e_reflow_add_item(EReflow *e_reflow, GnomeCanvasItem *item)
if (E_REFLOW_CLASS(GTK_OBJECT(e_reflow)->klass)->add_item)
(E_REFLOW_CLASS(GTK_OBJECT(e_reflow)->klass)->add_item) (e_reflow, item);
}
+
+void
+e_reflow_post_add_item(EReflow *e_reflow, GnomeCanvasItem *item)
+{
+ set_empty(e_reflow);
+}
diff --git a/widgets/misc/e-reflow.h b/widgets/misc/e-reflow.h
index 54de59ba55..eb66b094a5 100644
--- a/widgets/misc/e-reflow.h
+++ b/widgets/misc/e-reflow.h
@@ -57,6 +57,9 @@ struct _EReflow
GList *items; /* Of type GnomeCanvasItem */
GList *columns; /* Of type GList of type GnomeCanvasItem (points into items) */
gint column_count; /* Number of columnns */
+
+ GnomeCanvasItem *empty_text;
+ gchar *empty_message;
double minimum_width;
double width;
@@ -98,6 +101,9 @@ struct _EReflowClass
void e_reflow_add_item(EReflow *e_reflow, GnomeCanvasItem *item);
GtkType e_reflow_get_type (void);
+/* Internal usage only: */
+void e_reflow_post_add_item(EReflow *e_reflow, GnomeCanvasItem *item);
+
#ifdef __cplusplus
}
#endif /* __cplusplus */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 13:01:18 +0800