1 files changed, 468 insertions, 0 deletions
diff --git a/src/model/textbox.c b/src/model/textbox.c
new file mode 100644
index 0000000..4f163cb
--- /dev/null
+++ b/src/model/textbox.c
@@ -0,0 +1,468 @@
+/*
+ * textbox.c
+ *
+ *
+ * Author:
+ *  Richard Hult <rhult@hem.passagen.se>
+ *  Ricardo Markiewicz <rmarkie@fi.uba.ar>
+ *  Andres de Barbara <adebarbara@fi.uba.ar>
+ *
+ * Web page: http://arrakis.lug.fi.uba.ar/
+ *
+ * Copyright (C) 1999-2001  Richard Hult
+ * Copyright (C) 2003,2006  Ricardo Markiewicz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gnome.h>
+#include <math.h>
+#include "item-data.h"
+#include "textbox.h"
+#include "clipboard.h"
+#include "node-store.h"
+#include "schematic-print-context.h"
+
+/*
+#define TEXTBOX_DEFAULT_FONT "-*-helvetica-medium-r-*-*-*-100-*-*-*-*-*-*"
+*/
+#define TEXTBOX_DEFAULT_FONT "Arial 10"
+
+/*
+ * Private declarations
+ */
+
+static void textbox_class_init (TextboxClass *klass);
+static void textbox_init (Textbox *textbox);
+static void textbox_copy (ItemData *dest, ItemData *src);
+static ItemData *textbox_clone (ItemData *src);
+static void textbox_rotate (ItemData *data, int angle, SheetPos *center);
+static void textbox_print (ItemData *data, cairo_t *cr, SchematicPrintContext *ctx);
+static int textbox_register (ItemData *data);
+static void textbox_unregister (ItemData *data);
+static gboolean textbox_has_properties (ItemData *data);
+
+static void textbox_flip (ItemData *data, gboolean horizontal,
+	SheetPos *center);
+
+
+enum {
+	TEXT_CHANGED,
+	FONT_CHANGED,
+	LAST_SIGNAL
+};
+
+static ItemDataClass *parent_class = NULL;
+static guint textbox_signals[LAST_SIGNAL] = { 0 };
+
+struct _TextboxPriv {
+	char *text;
+	char *font;
+};
+
+GType
+textbox_get_type (void)
+{
+	static GType textbox_type = 0;
+
+	if (!textbox_type) {
+		static const GTypeInfo textbox_info = {
+			sizeof (TextboxClass),
+			NULL,
+			NULL,
+			(GClassInitFunc) textbox_class_init,
+			NULL,
+			NULL,
+			sizeof (Textbox),
+			0,
+			(GInstanceInitFunc) textbox_init,
+			NULL
+		};
+
+		textbox_type = g_type_register_static(TYPE_ITEM_DATA,
+			"Textbox", &textbox_info, 0);
+	}
+
+	return textbox_type;
+}
+
+static void
+textbox_finalize(GObject *object)
+{
+	Textbox *textbox = TEXTBOX (object);
+	TextboxPriv *priv = textbox->priv;
+
+	g_free (priv);
+
+	G_OBJECT_CLASS(parent_class)->finalize(object);
+}
+
+static void
+textbox_dispose(GObject *object)
+{
+	G_OBJECT_CLASS(parent_class)->dispose(object);
+}
+
+static void
+textbox_class_init (TextboxClass *klass)
+{
+	GObjectClass *object_class;
+	ItemDataClass *item_data_class;
+
+	parent_class = g_type_class_peek(TYPE_ITEM_DATA);
+	item_data_class = ITEM_DATA_CLASS(klass);
+	object_class = G_OBJECT_CLASS(klass);
+
+	textbox_signals[TEXT_CHANGED] =
+		g_signal_new ("text_changed",
+			G_TYPE_FROM_CLASS(object_class),
+			G_SIGNAL_RUN_FIRST,
+			0,
+			NULL,
+			NULL,
+			g_cclosure_marshal_VOID__STRING,
+			G_TYPE_NONE, 1, G_TYPE_STRING);
+
+	textbox_signals[FONT_CHANGED] =
+		g_signal_new ("font_changed",
+			G_TYPE_FROM_CLASS(object_class),
+			G_SIGNAL_RUN_FIRST,
+			0,
+			NULL,
+			NULL,
+			g_cclosure_marshal_VOID__STRING,
+			G_TYPE_NONE, 1, G_TYPE_STRING);
+
+	object_class->finalize= textbox_finalize;
+	object_class->dispose = textbox_dispose;
+
+	item_data_class->clone = textbox_clone;
+	item_data_class->copy = textbox_copy;
+	item_data_class->rotate = textbox_rotate;
+	item_data_class->flip = textbox_flip;
+	item_data_class->unreg = textbox_unregister;
+	item_data_class->reg = textbox_register;
+	item_data_class->has_properties = textbox_has_properties;
+	item_data_class->print = textbox_print;
+}
+
+static void
+textbox_init (Textbox *textbox)
+{
+	TextboxPriv *priv = g_new0 (TextboxPriv, 1);
+	textbox->priv = priv;
+}
+
+Textbox *
+textbox_new (char *font)
+{
+	Textbox *textbox;
+
+	textbox = TEXTBOX(g_object_new(TYPE_TEXTBOX, NULL));
+
+	if (font == NULL)
+		textbox->priv->font = g_strdup (TEXTBOX_DEFAULT_FONT);
+	else
+		textbox->priv->font = g_strdup (font);
+
+	return textbox;
+}
+
+static ItemData *
+textbox_clone (ItemData *src)
+{
+	Textbox *src_textbox, *new_textbox;
+	ItemDataClass *id_class;
+
+	g_return_val_if_fail (src != NULL, NULL);
+	g_return_val_if_fail (IS_TEXTBOX (src), NULL);
+
+	id_class = ITEM_DATA_CLASS(G_OBJECT_GET_CLASS(src));
+	if (id_class->copy == NULL)
+		return NULL;
+
+	src_textbox = TEXTBOX(src);
+	new_textbox = TEXTBOX(g_object_new(TYPE_TEXTBOX, NULL));
+	id_class->copy (ITEM_DATA (new_textbox), src);
+
+	return ITEM_DATA (new_textbox);
+}
+
+static void
+textbox_copy (ItemData *dest, ItemData *src)
+{
+	Textbox *dest_textbox, *src_textbox;
+
+	g_return_if_fail (dest != NULL);
+	g_return_if_fail (IS_TEXTBOX (dest));
+	g_return_if_fail (src != NULL);
+	g_return_if_fail (IS_TEXTBOX (src));
+
+	if (parent_class->copy != NULL)
+		parent_class->copy (dest, src);
+
+	dest_textbox = TEXTBOX (dest);
+	src_textbox = TEXTBOX (src);
+
+	dest_textbox->priv->text = src_textbox->priv->text;
+	dest_textbox->priv->font = src_textbox->priv->font;
+}
+
+static void
+textbox_rotate (ItemData *data, int angle, SheetPos *center)
+{
+	double affine[6];
+	ArtPoint src, dst;
+	Textbox *textbox;
+	TextboxPriv *priv;
+	SheetPos b1, b2;
+	SheetPos textbox_center, delta;
+
+	g_return_if_fail (data != NULL);
+	g_return_if_fail (IS_TEXTBOX (data));
+
+	if (angle == 0)
+		return;
+
+	textbox = TEXTBOX (data);
+
+	if (center) {
+		item_data_get_absolute_bbox (ITEM_DATA (textbox), &b1, &b2);
+		textbox_center.x = b1.x + (b2.x - b1.x) / 2;
+		textbox_center.y = b1.y + (b2.y - b1.y) / 2;
+	}
+
+	priv = textbox->priv;
+
+	art_affine_rotate (affine, angle);
+
+	/*
+	 * Let the views (canvas items) know about the rotation.
+	 */
+	g_signal_emit_by_name(G_OBJECT(textbox), "rotated", angle);
+
+	if (center) {
+		SheetPos textbox_pos;
+
+		item_data_get_pos (ITEM_DATA (textbox), &textbox_pos);
+
+		src.x = textbox_center.x - center->x;
+		src.y = textbox_center.y - center->y;
+		art_affine_point (&dst, &src, affine);
+
+		delta.x = -src.x + dst.x;
+		delta.y = -src.y + dst.y;
+
+		item_data_move (ITEM_DATA (textbox), &delta);
+	}
+}
+
+static void
+textbox_flip (ItemData *data, gboolean horizontal, SheetPos *center)
+{
+	double affine[6];
+	ArtPoint src, dst;
+	Textbox *textbox;
+	TextboxPriv *priv;
+	SheetPos b1, b2;
+	SheetPos textbox_center, delta;
+
+	g_return_if_fail (data != NULL);
+	g_return_if_fail (IS_TEXTBOX (data));
+
+	textbox = TEXTBOX (data);
+
+	if (center) {
+		item_data_get_absolute_bbox (ITEM_DATA (textbox), &b1, &b2);
+		textbox_center.x = b1.x + (b2.x - b1.x) / 2;
+		textbox_center.y = b1.y + (b2.y - b1.y) / 2;
+	}
+
+	priv = textbox->priv;
+
+	if (horizontal)
+		art_affine_scale (affine, -1, 1);
+	else
+		art_affine_scale (affine, 1, -1);
+
+	/*
+	 * Let the views (canvas items) know about the rotation.
+	 */
+	g_signal_emit_by_name(G_OBJECT (textbox), "flipped", horizontal);
+
+	if (center) {
+		SheetPos textbox_pos;
+
+		item_data_get_pos (ITEM_DATA (textbox), &textbox_pos);
+
+		src.x = textbox_center.x - center->x;
+		src.y = textbox_center.y - center->y;
+		art_affine_point (&dst, &src, affine);
+
+		delta.x = -src.x + dst.x;
+		delta.y = -src.y + dst.y;
+
+		item_data_move (ITEM_DATA (textbox), &delta);
+	}
+}
+
+/* static */
+void
+textbox_update_bbox (Textbox *textbox)
+{
+	PangoFontDescription *font;
+	/*
+	Unused variables
+	int width;
+	int rbearing;
+	int lbearing;
+	int ascent, descent;
+	*/
+	SheetPos b1, b2;
+	TextboxPriv *priv;
+
+	priv = textbox->priv;
+
+	font = pango_font_description_from_string(priv->font);
+	/* TODO : Find out how to do this with Pango. */
+	/* gdk_string_extents (font,
+		priv->text,
+		&lbearing,
+		&rbearing,
+		&width,
+		&ascent,
+		&descent);
+		gdk_font_unref (font);
+	*/
+	b1.x = 0.0;
+	b1.y = 0.0-5; // - font->ascent;
+	b2.x = 0.0+5; // + rbearing;
+	b2.y = 0.0+5; // + font->descent;
+
+	item_data_set_relative_bbox (ITEM_DATA (textbox), &b1, &b2);
+	pango_font_description_free(font);
+}
+
+static gboolean
+textbox_has_properties (ItemData *data)
+{
+	return TRUE;
+}
+
+void
+textbox_set_text (Textbox *textbox, const char *text)
+{
+	g_return_if_fail (textbox != NULL);
+	g_return_if_fail (IS_TEXTBOX (textbox));
+
+	g_free (textbox->priv->text);
+	textbox->priv->text = g_strdup (text);
+
+	textbox_update_bbox (textbox);
+
+	g_signal_emit_by_name (G_OBJECT(textbox), "text_changed", text);
+}
+
+char *
+textbox_get_text (Textbox *textbox)
+{
+	g_return_val_if_fail (textbox != NULL, NULL);
+	g_return_val_if_fail (IS_TEXTBOX (textbox), NULL);
+
+	return textbox->priv->text;
+}
+
+void
+textbox_set_font (Textbox *textbox, char *font)
+{
+	g_return_if_fail (textbox != NULL);
+	g_return_if_fail (IS_TEXTBOX (textbox));
+
+	g_free (textbox->priv->font);
+	if (font == NULL)
+		textbox->priv->font = g_strdup (TEXTBOX_DEFAULT_FONT);
+	else
+		textbox->priv->font = g_strdup (font);
+
+	textbox_update_bbox (textbox);
+
+	g_signal_emit_by_name(G_OBJECT (textbox),
+		"font_changed", textbox->priv->font);
+}
+
+char *
+textbox_get_font (Textbox *textbox)
+{
+	g_return_val_if_fail (textbox != NULL, NULL);
+	g_return_val_if_fail (IS_TEXTBOX (textbox), NULL);
+
+	return textbox->priv->font;
+}
+
+static void
+textbox_print (ItemData *data, cairo_t *cr, SchematicPrintContext *ctx)
+{
+/*	GnomeCanvasPoints *line;
+	double x0, y0;
+	ArtPoint dst, src;
+	double affine[6];
+	int i;
+	Textbox *textbox;
+	TextboxPriv *priv;
+	SheetPos pos;
+
+	g_return_if_fail (data != NULL);
+	g_return_if_fail (IS_TEXTBOX (data));
+
+	textbox = TEXTBOX (data);
+	priv = textbox->priv;
+
+	item_data_get_pos (ITEM_DATA (textbox), &pos);
+	src.x = pos.x;
+	src.y = pos.y;
+
+	art_affine_identity (affine);
+
+	gnome_print_setfont(opc->ctx,
+		gnome_font_face_get_font_default(
+		opc->label_font, 6)
+	);
+	print_draw_text (opc->ctx, priv->text, &src);
+	*/
+}
+
+static void
+textbox_unregister (ItemData *data)
+{
+	NodeStore *store;
+
+	g_return_if_fail (IS_TEXTBOX (data));
+
+	store = item_data_get_store (data);
+	node_store_remove_textbox (store, TEXTBOX (data));
+}
+
+static int 
+textbox_register (ItemData *data)
+{
+	NodeStore *store;
+
+	g_return_val_if_fail (IS_TEXTBOX (data), 0);
+
+	store = item_data_get_store (data);
+	node_store_add_textbox (store, TEXTBOX (data));
+	return 0;
+}