Added e-table-field-chooser*.

2000-06-07  Christopher James Lahey  <clahey@helixcode.com>

	* Makefile.am: Added e-table-field-chooser*.

	* e-table-defines.h: Moved some things to here.

	* e-table-field-chooser-dialog.c, e-table-field-chooser-dialog.h,
	e-table-field-chooser-item.c, e-table-field-chooser-item.h,
	e-table-field-chooser.c, e-table-field-chooser.glade,
	e-table-field-chooser.glade.h, e-table-field-chooser.h: New dialog
	to drag extra fields from.  (Not yet finished.)

	* e-table-header-item.c, e-table-header-item.h: Changed to
	accommodate e-table-field-chooser.

svn path=/trunk/; revision=3473

1 files changed, 567 insertions, 0 deletions

diff --git a/widgets/e-table/e-table-field-chooser-item.c b/widgets/e-table/e-table-field-chooser-item.c
new file mode 100644
index 0000000000..fd08af3307
--- /dev/null
+++ b/widgets/e-table/e-table-field-chooser-item.c
@@ -0,0 +1,567 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * E-table-column-view.c: A canvas item based view of the ETableColumn.
+ *
+ * Author:
+ *   Miguel de Icaza (miguel@gnu.org)
+ *
+ * Copyright 1999, 2000 Helix Code, Inc.
+ */
+#include <config.h>
+#include <gtk/gtksignal.h>
+#include <gtk/gtkdnd.h>
+#include <libgnomeui/gnome-canvas.h>
+#include <libgnomeui/gnome-canvas-util.h>
+#include <libgnomeui/gnome-canvas-polygon.h>
+#include <libgnomeui/gnome-canvas-rect-ellipse.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "e-util/e-xml-utils.h"
+#include "e-util/e-canvas.h"
+
+#include "e-table-header.h"
+#include "e-table-col-dnd.h"
+#include "e-table-defines.h"
+
+#include "e-table-field-chooser-item.h"
+
+#if 0
+enum {
+	BUTTON_PRESSED,
+	LAST_SIGNAL
+};
+
+static guint etfci_signals [LAST_SIGNAL] = { 0, };
+#endif
+
+#define PARENT_OBJECT_TYPE gnome_canvas_item_get_type ()
+
+#define ELEMENTS(x) (sizeof (x) / sizeof (x[0]))
+
+static GnomeCanvasItemClass *etfci_parent_class;
+
+static void etfci_drop_table_header (ETableFieldChooserItem *etfci);
+
+enum {
+	ARG_0,
+	ARG_TABLE_HEADER,
+	ARG_DND_CODE,
+	ARG_TABLE_FONTSET,
+	ARG_WIDTH,
+	ARG_HEIGHT,
+};
+
+static void
+etfci_destroy (GtkObject *object){
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (object);
+
+	etfci_drop_table_header (etfci);
+	
+	gdk_font_unref(etfci->font);
+
+	if (GTK_OBJECT_CLASS (etfci_parent_class)->destroy)
+		(*GTK_OBJECT_CLASS (etfci_parent_class)->destroy) (object);
+}
+
+static void
+etfci_reflow (GnomeCanvasItem *item, gint flags)
+{
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
+	double old_height;
+
+	old_height = etfci->height;
+
+	etfci->height = e_table_header_count (etfci->full_header) * etfci->button_height;
+	
+	if (old_height != etfci->height)
+		e_canvas_item_request_parent_reflow(item);
+	
+	gnome_canvas_item_request_update(item);
+}
+
+static void
+etfci_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
+{
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
+	double   i2c [6];
+	ArtPoint c1, c2, i1, i2;
+	
+	if (GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->update)
+		(*GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->update)(item, affine, clip_path, flags);
+
+	i1.x = i1.y = 0;
+	i2.x = etfci->width;
+	i2.y = etfci->height;
+
+	gnome_canvas_item_i2c_affine (item, i2c);
+	art_affine_point (&c1, &i1, i2c);
+	art_affine_point (&c2, &i2, i2c);
+
+	if (item->x1 != c1.x ||
+	     item->y1 != c1.y ||
+	     item->x2 != c2.x ||
+	     item->y2 != c2.y)
+		{
+			gnome_canvas_request_redraw (item->canvas, item->x1, item->y1, item->x2, item->y2);
+			item->x1 = c1.x;
+			item->y1 = c1.y;
+			item->x2 = c2.x;
+			item->y2 = c2.y;
+
+			gnome_canvas_group_child_bounds (GNOME_CANVAS_GROUP (item->parent), item);
+		}
+	gnome_canvas_request_redraw (item->canvas, item->x1, item->y1, item->x2, item->y2);
+}
+
+static void
+etfci_font_load (ETableFieldChooserItem *etfci, char *font)
+{
+	if (etfci->font)
+		gdk_font_unref (etfci->font);
+	etfci->font = NULL;
+	
+	if (font)
+		etfci->font = gdk_fontset_load (font);
+
+	if (etfci->font == NULL) {
+		etfci->font = GTK_WIDGET(GNOME_CANVAS_ITEM(etfci)->canvas)->style->font;
+		gdk_font_ref(etfci->font);
+	}
+	
+	etfci->button_height = etfci->font->ascent + etfci->font->descent + HEADER_PADDING;
+}
+
+static void
+etfci_drop_table_header (ETableFieldChooserItem *etfci)
+{
+	GtkObject *header;
+	
+	if (!etfci->full_header)
+		return;
+
+	header = GTK_OBJECT (etfci->full_header);
+	gtk_signal_disconnect (header, etfci->structure_change_id);
+	gtk_signal_disconnect (header, etfci->dimension_change_id);
+
+	gtk_object_unref (header);
+	etfci->full_header = NULL;
+	etfci->height = 0;
+}
+
+static void 
+structure_changed (ETableHeader *header, ETableFieldChooserItem *etfci)
+{
+	e_canvas_item_request_reflow(GNOME_CANVAS_ITEM(etfci));
+}
+
+static void
+dimension_changed (ETableHeader *header, int col, ETableFieldChooserItem *etfci)
+{
+	e_canvas_item_request_reflow(GNOME_CANVAS_ITEM(etfci));
+}
+
+static void
+etfci_add_table_header (ETableFieldChooserItem *etfci, ETableHeader *header)
+{
+	etfci->full_header = header;
+	gtk_object_ref (GTK_OBJECT (etfci->full_header));
+
+	etfci->structure_change_id = gtk_signal_connect (
+		GTK_OBJECT (header), "structure_change",
+		GTK_SIGNAL_FUNC(structure_changed), etfci);
+	etfci->dimension_change_id = gtk_signal_connect (
+		GTK_OBJECT (header), "dimension_change",
+		GTK_SIGNAL_FUNC(dimension_changed), etfci);
+	e_canvas_item_request_reflow(GNOME_CANVAS_ITEM(etfci));
+}
+
+static void
+etfci_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
+{
+	GnomeCanvasItem *item;
+	ETableFieldChooserItem *etfci;
+
+	item = GNOME_CANVAS_ITEM (o);
+	etfci = E_TABLE_FIELD_CHOOSER_ITEM (o);
+
+	switch (arg_id){
+	case ARG_TABLE_HEADER:
+		etfci_drop_table_header (etfci);
+		etfci_add_table_header (etfci, E_TABLE_HEADER(GTK_VALUE_OBJECT (*arg)));
+		break;
+
+	case ARG_DND_CODE:
+		g_free(etfci->dnd_code);
+		etfci->dnd_code = g_strdup(GTK_VALUE_STRING (*arg));
+		break;
+
+	case ARG_TABLE_FONTSET:
+		etfci_font_load (etfci, GTK_VALUE_STRING (*arg));
+		e_canvas_item_request_reflow(item);
+		break;
+
+	case ARG_WIDTH:
+		etfci->width = GTK_VALUE_DOUBLE (*arg);
+		gnome_canvas_item_request_update(item);
+		break;
+	}
+}
+
+static void
+etfci_get_arg (GtkObject *o, GtkArg *arg, guint arg_id)
+{
+	GnomeCanvasItem *item;
+	ETableFieldChooserItem *etfci;
+
+	item = GNOME_CANVAS_ITEM (o);
+	etfci = E_TABLE_FIELD_CHOOSER_ITEM (o);
+
+	switch (arg_id){
+
+	case ARG_DND_CODE:
+		GTK_VALUE_STRING (*arg) = g_strdup (etfci->dnd_code);
+		break;
+	case ARG_WIDTH:
+		GTK_VALUE_DOUBLE (*arg) = etfci->width;
+		break;
+	case ARG_HEIGHT:
+		GTK_VALUE_DOUBLE (*arg) = etfci->height;
+		break;
+	default:
+		arg->type = GTK_TYPE_INVALID;
+		break;
+	}
+}
+
+static void
+etfci_drag_data_get (GtkWidget          *widget,
+		     GdkDragContext     *context,
+		     GtkSelectionData   *selection_data,
+		     guint               info,
+		     guint               time,
+		     ETableFieldChooserItem *etfci)
+{
+	if (etfci->drag_col != -1) {
+		gchar *string = g_strdup_printf("%d", etfci->drag_col);
+		gtk_selection_data_set(selection_data,
+				       GDK_SELECTION_TYPE_STRING,
+				       sizeof(string[0]),
+				       string,
+				       strlen(string));
+		g_free(string);
+	}
+}
+
+static void
+etfci_drag_end (GtkWidget      *canvas, 
+		GdkDragContext *context,
+		ETableFieldChooserItem *etfci)
+{
+	etfci->drag_col = -1;
+}
+
+static void
+etfci_realize (GnomeCanvasItem *item)
+{
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
+	GdkWindow *window;
+
+	if (GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)-> realize)
+		(*GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->realize)(item);
+
+	window = GTK_WIDGET (item->canvas)->window;
+
+	if (!etfci->font)
+		etfci_font_load (etfci, NULL);
+
+	etfci->drag_end_id = gtk_signal_connect (
+		GTK_OBJECT (item->canvas), "drag_end",
+		GTK_SIGNAL_FUNC (etfci_drag_end), etfci);
+	etfci->drag_data_get_id = gtk_signal_connect (
+		GTK_OBJECT (item->canvas), "drag_data_get",
+		GTK_SIGNAL_FUNC (etfci_drag_data_get), etfci);
+}
+
+static void
+etfci_unrealize (GnomeCanvasItem *item)
+{
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
+
+	if (etfci->font)
+		gdk_font_unref (etfci->font);
+	etfci->font = NULL;
+
+	gtk_signal_disconnect (GTK_OBJECT (item->canvas), etfci->drag_end_id);
+	etfci->drag_end_id = 0;
+	gtk_signal_disconnect (GTK_OBJECT (item->canvas), etfci->drag_data_get_id);
+	etfci->drag_data_get_id = 0;
+	
+	if (GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->unrealize)
+		(*GNOME_CANVAS_ITEM_CLASS (etfci_parent_class)->unrealize)(item);
+}
+
+static void
+draw_button (ETableFieldChooserItem *etfci, ETableCol *col,
+	     GdkDrawable *drawable, GtkStyle *style,
+	     int x, int y, int width, int height)
+{
+	GdkRectangle clip;
+	int xtra;
+	GdkRectangle area;
+
+	GtkWidget *widget = GTK_WIDGET(GNOME_CANVAS_ITEM(etfci)->canvas);
+	
+	gdk_window_clear_area (drawable, x, y, width, height);
+
+	area.x = x;
+	area.y = y;
+	area.width = width;
+	area.height = height;
+
+	gtk_paint_box (style, drawable,
+		       GTK_STATE_NORMAL, GTK_SHADOW_OUT,
+		       &area, widget, "button",
+		       x, y, width, height);
+
+	clip.x = x + HEADER_PADDING / 2;
+	clip.y = y + HEADER_PADDING / 2;
+	clip.width = width - HEADER_PADDING;
+	clip.height = etfci->button_height;
+	
+	if (col->is_pixbuf){
+		xtra = (clip.width - gdk_pixbuf_get_width (col->pixbuf))/2;
+		
+		xtra += HEADER_PADDING / 2;
+
+		gdk_pixbuf_render_to_drawable_alpha (col->pixbuf, 
+						     drawable,
+						     0, 0, 
+						     x + xtra, y + (clip.height - gdk_pixbuf_get_height (col->pixbuf)) / 2,
+						     gdk_pixbuf_get_width (col->pixbuf), gdk_pixbuf_get_height(col->pixbuf),
+						     GDK_PIXBUF_ALPHA_FULL, 128,
+						     GDK_RGB_DITHER_NORMAL,
+						     0, 0);
+	} else {
+		/* Center the thing */
+		xtra = (clip.width - gdk_string_measure (etfci->font, col->text))/2;
+		
+		/* Skip over border */
+		if (xtra < 0)
+			xtra = 0;
+
+		xtra += HEADER_PADDING / 2;
+	
+		gdk_draw_text (
+			       drawable, etfci->font,
+			       style->text_gc[GTK_STATE_NORMAL], x + xtra, y + etfci->button_height - etfci->font->descent - HEADER_PADDING / 2,
+			       col->text, strlen (col->text));
+	}
+}
+
+static void
+etfci_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int width, int height)
+{
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
+	GnomeCanvas *canvas = item->canvas;
+	const int rows = e_table_header_count (etfci->full_header);
+	int y1, y2;
+	int row;
+
+	y1 = y2 = 0;
+	for (row = 0; row < rows; row++, y1 = y2){
+		ETableCol *ecol = e_table_header_get_column (etfci->full_header, row);
+
+		y2 += etfci->button_height;
+		
+		if (y1 > (y + height))
+			break;
+
+		if (y2 < y)
+			continue;
+		
+		draw_button (etfci, ecol, drawable,
+			     GTK_WIDGET (canvas)->style,
+			     - x, y1 - y, etfci->width, y2 - y1);
+	}
+}
+
+static double
+etfci_point (GnomeCanvasItem *item, double x, double y, int cx, int cy,
+	    GnomeCanvasItem **actual_item)
+{
+	*actual_item = item;
+	return 0.0;
+}
+
+static gboolean
+etfci_maybe_start_drag (ETableFieldChooserItem *etfci, double x, double y)
+{
+	if (!etfci->maybe_drag)
+		return FALSE;
+
+	if (MAX (abs (etfci->click_x - x),
+		 abs (etfci->click_y - y)) <= 3)
+		return FALSE;
+
+	return TRUE;
+}
+
+static void
+etfci_start_drag (ETableFieldChooserItem *etfci, GdkEvent *event)
+{
+	GtkWidget *widget = GTK_WIDGET (GNOME_CANVAS_ITEM (etfci)->canvas);
+	GtkTargetList *list;
+	GdkDragContext *context;
+	ETableCol *ecol;
+	GdkPixmap *pixmap;
+	int drag_col;
+
+	GtkTargetEntry  etfci_drag_types [] = {
+		{ TARGET_ETABLE_COL_TYPE, 0, TARGET_ETABLE_COL_HEADER },
+	};
+
+	drag_col = event->motion.x / etfci->button_height;
+
+	if (drag_col < 0 || drag_col > e_table_header_count(etfci->full_header))
+		return;
+
+	ecol = e_table_header_get_column (etfci->full_header, drag_col);
+
+	etfci->drag_col = ecol->col_idx;
+
+	etfci_drag_types[0].target = g_strdup_printf("%s-%s", etfci_drag_types[0].target, etfci->dnd_code);
+	list = gtk_target_list_new (etfci_drag_types, ELEMENTS (etfci_drag_types));
+	context = gtk_drag_begin (widget, list, GDK_ACTION_MOVE, 1, event);
+	g_free(etfci_drag_types[0].target);
+
+
+	pixmap = gdk_pixmap_new (widget->window, etfci->width, etfci->button_height, -1);
+	draw_button (etfci, ecol, pixmap,
+		     widget->style,
+		     0, 0, etfci->width, etfci->button_height);
+	gtk_drag_set_icon_pixmap        (context,
+					 gdk_window_get_colormap (widget->window),
+					 pixmap,
+					 NULL,
+					 etfci->width / 2,
+					 etfci->button_height / 2);
+	gdk_pixmap_unref (pixmap);
+	etfci->maybe_drag = FALSE;
+}
+
+/*
+ * Handles the events on the ETableFieldChooserItem
+ */
+static int
+etfci_event (GnomeCanvasItem *item, GdkEvent *e)
+{
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
+	GnomeCanvas *canvas = item->canvas;
+	int x, y;
+	
+	switch (e->type){
+	case GDK_MOTION_NOTIFY:
+		gnome_canvas_w2c (canvas, e->motion.x, e->motion.y, &x, &y);
+
+		if (etfci_maybe_start_drag (etfci, x, y))
+			etfci_start_drag (etfci, e);
+		break;
+		
+	case GDK_BUTTON_PRESS:
+		gnome_canvas_w2c (canvas, e->button.x, e->button.y, &x, &y);
+		
+		if (e->button.button == 1){
+			etfci->click_x = x;
+			etfci->click_y = y;
+			etfci->maybe_drag = TRUE;
+		}
+		break;
+		
+	case GDK_BUTTON_RELEASE: {
+		etfci->maybe_drag = FALSE;
+		break;
+	}
+	
+	default:
+		return FALSE;
+	}
+	return TRUE;
+}
+
+static void
+etfci_class_init (GtkObjectClass *object_class)
+{
+	GnomeCanvasItemClass *item_class = (GnomeCanvasItemClass *) object_class;
+
+	etfci_parent_class = gtk_type_class (PARENT_OBJECT_TYPE);
+	
+	object_class->destroy = etfci_destroy;
+	object_class->set_arg = etfci_set_arg;
+	object_class->get_arg = etfci_get_arg;
+
+	item_class->update      = etfci_update;
+	item_class->realize     = etfci_realize;
+	item_class->unrealize   = etfci_unrealize;
+	item_class->draw        = etfci_draw;
+	item_class->point       = etfci_point;
+	item_class->event       = etfci_event;
+	
+	gtk_object_add_arg_type ("ETableFieldChooserItem::ETableHeader", GTK_TYPE_OBJECT,
+				 GTK_ARG_WRITABLE, ARG_TABLE_HEADER);
+	gtk_object_add_arg_type ("ETableFieldChooserItem::dnd_code", GTK_TYPE_STRING,
+				 GTK_ARG_READWRITE, ARG_DND_CODE);
+	gtk_object_add_arg_type ("ETableFieldChooserItem::fontset", GTK_TYPE_STRING,
+				 GTK_ARG_WRITABLE, ARG_TABLE_FONTSET);
+	gtk_object_add_arg_type ("ETableFieldChooserItem::width", GTK_TYPE_DOUBLE,
+				 GTK_ARG_READWRITE, ARG_WIDTH);
+	gtk_object_add_arg_type ("ETableFieldChooserItem::height", GTK_TYPE_DOUBLE,
+				 GTK_ARG_READABLE, ARG_HEIGHT);
+
+}
+
+static void
+etfci_init (GnomeCanvasItem *item)
+{
+	ETableFieldChooserItem *etfci = E_TABLE_FIELD_CHOOSER_ITEM (item);
+
+	etfci->full_header = NULL;
+	
+	etfci->height = etfci->width = 0;
+	etfci->button_height = 0;
+
+	etfci->font = NULL;
+
+	etfci->structure_change_id = 0;
+	etfci->dimension_change_id = 0;
+
+	etfci->dnd_code = NULL;
+
+	etfci->maybe_drag = 0;
+	etfci->drag_end_id = 0;
+
+	e_canvas_item_set_reflow_callback(item, etfci_reflow);
+}
+
+GtkType
+e_table_field_chooser_item_get_type (void)
+{
+	static GtkType type = 0;
+
+	if (!type){
+		GtkTypeInfo info = {
+			"ETableFieldChooserItem",
+			sizeof (ETableFieldChooserItem),
+			sizeof (ETableFieldChooserItemClass),
+			(GtkClassInitFunc) etfci_class_init,
+			(GtkObjectInitFunc) etfci_init,
+			NULL, /* reserved 1 */
+			NULL, /* reserved 2 */
+			(GtkClassInitFunc) NULL
+		};
+
+		type = gtk_type_unique (PARENT_OBJECT_TYPE, &info);
+	}
+
+	return type;
+}
+