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authorJody Goldberg <jgoldberg@home.com>2000-06-30 06:56:51 +0800
committerJody Goldberg <jody@src.gnome.org>2000-06-30 06:56:51 +0800
commit72c913ff20b2e03a338cd50fc302d18a7a95f72f (patch)
tree04c88d623129472f955280e1ee572240dd2dfe29 /widgets/misc
parent9815b1b69b1c70add1bff85928f302f7caae71db (diff)
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Add simple deadkey support.
2000-06-29 Jody Goldberg <jgoldberg@home.com> * e-canvas.c (e_canvas_init) : Init the InputContext members (e_canvas_class_init) : Add a handler for unrealize. (e_canvas_focus_in) : enable the input context. (e_canvas_focus_out) : enable the input context. (e_canvas_realize) : Create an input context. (e_canvas_unrealize) : New function to release the input context. svn path=/trunk/; revision=3817
Diffstat (limited to 'widgets/misc')
-rw-r--r--widgets/misc/e-canvas.c102
-rw-r--r--widgets/misc/e-canvas.h4
2 files changed, 76 insertions, 30 deletions
diff --git a/widgets/misc/e-canvas.c b/widgets/misc/e-canvas.c
index 5b843bf5b8..0da4dade28 100644
--- a/widgets/misc/e-canvas.c
+++ b/widgets/misc/e-canvas.c
@@ -1,5 +1,5 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
+/*
* e-canvas.c
* Copyright (C) 2000 Helix Code, Inc.
* Author: Chris Lahey <clahey@helixcode.com>
@@ -26,6 +26,7 @@ static void e_canvas_init (ECanvas *card);
static void e_canvas_destroy (GtkObject *object);
static void e_canvas_class_init (ECanvasClass *klass);
static void e_canvas_realize (GtkWidget *widget);
+static void e_canvas_unrealize (GtkWidget *widget);
static gint e_canvas_key (GtkWidget *widget,
GdkEventKey *event);
@@ -49,7 +50,7 @@ GtkType
e_canvas_get_type (void)
{
static GtkType canvas_type = 0;
-
+
if (!canvas_type)
{
static const GtkTypeInfo canvas_info =
@@ -63,10 +64,10 @@ e_canvas_get_type (void)
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
-
+
canvas_type = gtk_type_unique (gnome_canvas_get_type (), &canvas_info);
}
-
+
return canvas_type;
}
@@ -76,11 +77,11 @@ e_canvas_class_init (ECanvasClass *klass)
GtkObjectClass *object_class;
GnomeCanvasClass *canvas_class;
GtkWidgetClass *widget_class;
-
+
object_class = (GtkObjectClass*) klass;
canvas_class = (GnomeCanvasClass *) klass;
widget_class = (GtkWidgetClass *) klass;
-
+
parent_class = gtk_type_class (gnome_canvas_get_type ());
object_class->destroy = e_canvas_destroy;
@@ -90,7 +91,8 @@ e_canvas_class_init (ECanvasClass *klass)
widget_class->focus_in_event = e_canvas_focus_in;
widget_class->focus_out_event = e_canvas_focus_out;
widget_class->realize = e_canvas_realize;
-
+ widget_class->unrealize = e_canvas_unrealize;
+
klass->reflow = NULL;
e_canvas_signals [REFLOW] =
@@ -109,6 +111,8 @@ e_canvas_init (ECanvas *canvas)
{
canvas->selection = NULL;
canvas->cursor = NULL;
+ canvas->ic = NULL;
+ canvas->ic_attr = NULL;
}
static void
@@ -307,13 +311,13 @@ e_canvas_item_grab_focus (GnomeCanvasItem *item)
if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET(item->canvas))) {
gtk_widget_grab_focus (GTK_WIDGET (item->canvas));
}
-
+
if (focused_item) {
ev.focus_change.type = GDK_FOCUS_CHANGE;
ev.focus_change.window = GTK_LAYOUT (item->canvas)->bin_window;
ev.focus_change.send_event = FALSE;
ev.focus_change.in = TRUE;
-
+
emit_event (item->canvas, &ev);
}
}
@@ -323,11 +327,16 @@ static gint
e_canvas_focus_in (GtkWidget *widget, GdkEventFocus *event)
{
GnomeCanvas *canvas;
+ ECanvas *ecanvas;
canvas = GNOME_CANVAS (widget);
+ ecanvas = E_CANVAS (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
+ if (ecanvas->ic)
+ gdk_im_begin (ecanvas->ic, canvas->layout.bin_window);
+
if (canvas->focused_item)
return emit_event (canvas, (GdkEvent *) event);
else
@@ -344,6 +353,8 @@ e_canvas_focus_out (GtkWidget *widget, GdkEventFocus *event)
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
+ gdk_im_end ();
+
if (canvas->focused_item)
return emit_event (canvas, (GdkEvent *) event);
else
@@ -353,10 +364,52 @@ e_canvas_focus_out (GtkWidget *widget, GdkEventFocus *event)
static void
e_canvas_realize (GtkWidget *widget)
{
+ ECanvas *ecanvas = E_CANVAS (widget);
+
if (GTK_WIDGET_CLASS (parent_class)->realize)
(* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
-
+
gdk_window_set_back_pixmap (GTK_LAYOUT (widget)->bin_window, NULL, FALSE);
+
+ if (gdk_im_ready () && (ecanvas->ic_attr = gdk_ic_attr_new ()) != NULL) {
+ GdkEventMask mask;
+ GdkICAttr *attr = ecanvas->ic_attr;
+ GdkICAttributesType attrmask = GDK_IC_ALL_REQ;
+ GdkIMStyle style;
+ GdkIMStyle supported_style = GDK_IM_PREEDIT_NONE |
+ GDK_IM_PREEDIT_NOTHING |
+ GDK_IM_STATUS_NONE |
+ GDK_IM_STATUS_NOTHING;
+
+ attr->style = style = gdk_im_decide_style (supported_style);
+ attr->client_window = ecanvas->parent.layout.bin_window;
+
+ ecanvas->ic = gdk_ic_new (attr, attrmask);
+ if (ecanvas->ic != NULL) {
+ mask = gdk_window_get_events (attr->client_window);
+ mask |= gdk_ic_get_events (ecanvas->ic);
+ gdk_window_set_events (attr->client_window, mask);
+
+ if (GTK_WIDGET_HAS_FOCUS (widget))
+ gdk_im_begin (ecanvas->ic, attr->client_window);
+ } else
+ g_warning ("Can't create input context.");
+ }
+
+}
+
+static void
+e_canvas_unrealize (GtkWidget *widget)
+{
+ ECanvas * ecanvas = E_CANVAS (widget);
+ if (ecanvas->ic) {
+ gdk_ic_destroy (ecanvas->ic);
+ ecanvas->ic = NULL;
+ }
+ if (ecanvas->ic_attr) {
+ gdk_ic_attr_destroy (ecanvas->ic_attr);
+ ecanvas->ic_attr = NULL;
+ }
}
static void
@@ -374,7 +427,7 @@ e_canvas_item_invoke_reflow (GnomeCanvasItem *item, int flags)
e_canvas_item_invoke_reflow (child, flags);
}
}
-
+
if (item->object.flags & E_CANVAS_ITEM_NEEDS_REFLOW) {
ECanvasItemReflowFunc func;
func = gtk_object_get_data (GTK_OBJECT (item),
@@ -504,16 +557,16 @@ e_canvas_item_set_cursor (GnomeCanvasItem *item, gpointer id)
canvas->selection = NULL;
gnome_canvas_item_grab_focus(item);
-
+
info = g_new(ECanvasSelectionInfo, 1);
info->item = item;
info->id = id;
-
+
flags = E_CANVAS_ITEM_SELECTION_SELECT | E_CANVAS_ITEM_SELECTION_CURSOR;
func = gtk_object_get_data(GTK_OBJECT(item), "ECanvasItem::selection_callback");
if (func)
func(item, flags, id);
-
+
canvas->selection = g_list_prepend(canvas->selection, info);
canvas->cursor = info;
}
@@ -535,16 +588,16 @@ e_canvas_item_add_selection (GnomeCanvasItem *item, gpointer id)
g_return_if_fail(GNOME_IS_CANVAS_ITEM(item));
g_return_if_fail(item->canvas != NULL);
g_return_if_fail(E_IS_CANVAS(item->canvas));
-
+
flags = E_CANVAS_ITEM_SELECTION_SELECT;
canvas = E_CANVAS(item->canvas);
-
+
if (canvas->cursor) {
func = gtk_object_get_data(GTK_OBJECT(canvas->cursor->item), "ECanvasItem::selection_callback");
if (func)
func(canvas->cursor->item, flags, canvas->cursor->id);
}
-
+
gnome_canvas_item_grab_focus(item);
flags = E_CANVAS_ITEM_SELECTION_SELECT | E_CANVAS_ITEM_SELECTION_CURSOR;
@@ -556,7 +609,7 @@ e_canvas_item_add_selection (GnomeCanvasItem *item, gpointer id)
func = gtk_object_get_data(GTK_OBJECT(item), "ECanvasItem::selection_callback");
if (func)
func(item, flags, id);
-
+
canvas->selection = g_list_prepend(canvas->selection, info);
canvas->cursor = info;
}
@@ -579,7 +632,7 @@ e_canvas_item_remove_selection (GnomeCanvasItem *item, gpointer id)
for (list = canvas->selection; list; list = g_list_next(list)) {
info = list->data;
-
+
if (info->item == item) {
ECanvasItemSelectionCompareFunc compare_func;
compare_func = gtk_object_get_data(GTK_OBJECT(info->item), "ECanvasItem::selection_compare_callback");
@@ -601,14 +654,3 @@ e_canvas_item_remove_selection (GnomeCanvasItem *item, gpointer id)
}
}
}
-
-
-
-
-
-
-
-
-
-
-
diff --git a/widgets/misc/e-canvas.h b/widgets/misc/e-canvas.h
index 06e3768e12..b13a9dd2ab 100644
--- a/widgets/misc/e-canvas.h
+++ b/widgets/misc/e-canvas.h
@@ -78,6 +78,10 @@ struct _ECanvas
int idle_id;
GList *selection;
ECanvasSelectionInfo *cursor;
+
+ /* Input context for dead key support */
+ GdkIC *ic;
+ GdkICAttr *ic_attr;
};
struct _ECanvasClass