Initial revision

1 files changed, 352 insertions, 0 deletions

diff --git a/lib/ephy-gui.c b/lib/ephy-gui.c
new file mode 100644
index 000000000..fe4018d38
--- /dev/null
+++ b/lib/ephy-gui.c
@@ -0,0 +1,352 @@
+/*
+ *  Copyright (C) 2002 Marco Pesenti Gritti
+ *
+ *  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, 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 "ephy-gui.h"
+#include "eel-gconf-extensions.h"
+
+#include <ctype.h>
+#include <string.h>
+#include <libgnome/gnome-i18n.h>
+#include <gtk/gtktreemodel.h>
+
+/* Styles for tab labels */
+GtkStyle *loading_text_style = NULL;
+GtkStyle *new_text_style = NULL;
+
+/**
+ * gul_gui_menu_position_under_widget:
+ */
+void
+ephy_gui_menu_position_under_widget (GtkMenu   *menu,
+				     gint      *x,
+				     gint      *y,
+				     gboolean  *push_in,
+				     gpointer	user_data)
+{
+	GtkWidget *w = GTK_WIDGET (user_data);
+	gint width, height;
+	gint screen_width, screen_height;
+	GtkRequisition requisition;
+
+	gdk_drawable_get_size (w->window, &width, &height);
+	gdk_window_get_origin (w->window, x, y);
+	*y = *y + height;
+
+	gtk_widget_size_request (GTK_WIDGET (menu), &requisition);
+
+	screen_width = gdk_screen_width ();
+	screen_height = gdk_screen_height ();
+
+	*x = CLAMP (*x, 0, MAX (0, screen_width - requisition.width));
+	*y = CLAMP (*y, 0, MAX (0, screen_height - requisition.height));
+}
+
+/**
+ * gul_gui_gtk_radio_button_get: get the active member of a radiobutton
+ * group from one of the buttons in the group. This should be in GTK+!
+ */
+gint
+ephy_gui_gtk_radio_button_get (GtkRadioButton *radio_button)
+{
+	GtkToggleButton *toggle_button;
+	gint i, length;
+        GSList *list;
+
+	/* get group list */
+        list = gtk_radio_button_get_group (GTK_RADIO_BUTTON (radio_button));
+        length = g_slist_length (list);
+
+	/* iterate over list to find active button */
+	for (i = 0; list != NULL; i++, list = g_slist_next (list))
+	{
+		/* get button and text */
+		toggle_button = GTK_TOGGLE_BUTTON (list->data);
+		if (gtk_toggle_button_get_active (toggle_button))
+		{
+			break;
+		}
+	}
+
+	/* check we didn't run off end */
+	g_assert (list != NULL);
+
+	/* return index (reverse order!) */
+	return (length - 1) - i;
+}
+
+/**
+ * gul_gui_gtk_radio_button_set: set the active member of a radiobutton
+ * group from one of the buttons in the group. This should be in GTK+!
+ */
+void
+ephy_gui_gtk_radio_button_set (GtkRadioButton *radio_button, gint index)
+{
+	GtkToggleButton *button;
+	GSList *list;
+	gint length;
+
+	/* get the list */
+        list = gtk_radio_button_get_group (GTK_RADIO_BUTTON (radio_button));
+
+	/* check out the length */
+        length = g_slist_length (list);
+
+        /* new buttons are *preppended* to the list, so button added as first
+         * has last position in the list */
+        index = (length - 1) - index;
+
+	/* find the right button */
+        button = GTK_TOGGLE_BUTTON (g_slist_nth_data (list, index));
+
+	/* set it... this will de-activate the others in the group */
+	if (gtk_toggle_button_get_active (button) == FALSE)
+	{
+		gtk_toggle_button_set_active (button, TRUE);
+	}
+}
+
+GtkWidget *
+ephy_gui_append_new_menuitem (GtkWidget  *menu,
+			      const char *mnemonic,
+			      GCallback   callback,
+			      gpointer    data)
+{
+	GtkWidget *menu_item;
+
+	menu_item = gtk_menu_item_new_with_mnemonic (mnemonic);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (menu),
+			       menu_item);
+
+	if (callback)
+	{
+		g_signal_connect (G_OBJECT (menu_item),
+				  "activate",
+				  callback, data);
+	}
+
+	return menu_item;
+}
+
+GtkWidget *
+ephy_gui_append_new_menuitem_stock (GtkWidget  *menu,
+				    const char *stock_id,
+				    GCallback   callback,
+				    gpointer    data)
+{
+	GtkWidget *menu_item;
+
+	menu_item = gtk_image_menu_item_new_from_stock (stock_id, NULL);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (menu),
+			       menu_item);
+
+	if (callback)
+	{
+		g_signal_connect (G_OBJECT (menu_item),
+				  "activate",
+				  callback, data);
+	}
+
+	return menu_item;
+}
+
+GtkWidget *
+ephy_gui_append_new_menuitem_stock_icon (GtkWidget *menu,
+					 const char *stock_id,
+					 const char *mnemonic,
+					 GCallback callback,
+					 gpointer data)
+{
+	GtkWidget *menu_item;
+	GtkWidget *image;
+
+	menu_item = gtk_image_menu_item_new_with_mnemonic (mnemonic);
+	image = gtk_image_new_from_stock (stock_id, GTK_ICON_SIZE_MENU);
+	gtk_widget_show (image);
+	gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menu_item), image);
+
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (menu),
+			       menu_item);
+
+	if (callback)
+	{
+		g_signal_connect (G_OBJECT (menu_item),
+				  "activate",
+				  callback, data);
+	}
+
+	return menu_item;
+}
+
+GtkWidget *
+ephy_gui_append_new_check_menuitem (GtkWidget  *menu,
+				    const char *mnemonic,
+				    gboolean value,
+				    GCallback callback,
+				    gpointer data)
+{
+	GtkWidget *menu_item;
+
+	menu_item = gtk_check_menu_item_new_with_mnemonic (mnemonic);
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (menu),
+			       menu_item);
+
+	gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menu_item), value);
+
+	if (callback)
+	{
+		g_signal_connect (G_OBJECT (menu_item),
+				  "activate",
+				  callback, data);
+	}
+
+	return menu_item;
+}
+
+GtkWidget *
+ephy_gui_append_separator (GtkWidget *menu)
+{
+	GtkWidget *menu_item;
+
+	menu_item = gtk_menu_item_new ();
+	gtk_widget_show (menu_item);
+	gtk_menu_shell_append (GTK_MENU_SHELL (menu),
+			       menu_item);
+
+	return menu_item;
+}
+
+gboolean
+ephy_gui_confirm_overwrite_file (GtkWidget *parent, const char *filename)
+{
+	char *question;
+	GtkWidget *dialog;
+	gboolean res;
+
+	if (!g_file_test (filename, G_FILE_TEST_EXISTS))
+	{
+		return TRUE;
+	}
+
+	question = g_strdup_printf (_("File %s will be overwritten.\n"
+				    "If you choose yes, the contents will be lost.\n\n"
+				    "Do you want to continue?"), filename);
+	dialog = gtk_message_dialog_new (parent ? GTK_WINDOW(parent) : NULL,
+			                 GTK_DIALOG_MODAL,
+				         GTK_MESSAGE_QUESTION,
+				         GTK_BUTTONS_YES_NO,
+				         question);
+	res = (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_YES);
+	gtk_widget_destroy (dialog);
+	g_free (question);
+
+	return res;
+}
+
+static guint32
+shift_color_component (guchar component, float shift_by)
+{
+	guint32 result;
+	if (shift_by > 1.0) {
+		result = component * (2 - shift_by);
+	} else {
+		result = 0xff - shift_by * (0xff - component);
+	}
+
+	return result & 0xff;
+}
+
+/**
+ * ephy_gui_rgb_shift_color
+ * @color: A color.
+ * @shift_by: darken or lighten factor.
+ * Returns: An darkened or lightened rgb value.
+ *
+ * Darkens (@shift_by > 1) or lightens (@shift_by < 1)
+ * @color.
+ */
+guint32
+ephy_gui_rgb_shift_color (guint32 color, float shift_by)
+{
+	guint32 result;
+
+	/* shift red by shift_by */
+	result = shift_color_component((color & 0x00ff0000) >> 16, shift_by);
+	result <<= 8;
+	/* shift green by shift_by */
+	result |=  shift_color_component((color & 0x0000ff00) >> 8, shift_by);
+	result <<= 8;
+	/* shift blue by shift_by */
+	result |=  shift_color_component((color & 0x000000ff), shift_by);
+
+	/* alpha doesn't change */
+	result |= (0xff000000 & color);
+
+	return result;
+}
+
+static guint32
+rgb16_to_rgb (gushort r, gushort g, gushort b)
+{
+	guint32 result;
+
+	result = (0xff0000 | (r & 0xff00));
+	result <<= 8;
+	result |= ((g & 0xff00) | (b >> 8));
+
+	return result;
+}
+
+/**
+ * ephy_gui_gdk_color_to_rgb
+ * @color: A GdkColor style color.
+ * Returns: An rgb value.
+ *
+ * Converts from a GdkColor stlye color to a gdk_rgb one.
+ * Alpha gets set to fully opaque
+ */
+guint32
+ephy_gui_gdk_color_to_rgb (const GdkColor *color)
+{
+	return rgb16_to_rgb (color->red, color->green, color->blue);
+}
+
+/**
+ * ephy_gui_rgb_to_color
+ * @color: a gdk_rgb style value.
+ *
+ * Converts from a gdk_rgb value style to a GdkColor one.
+ * The gdk_rgb color alpha channel is ignored.
+ *
+ * Return value: A GdkColor structure version of the given RGB color.
+ */
+GdkColor
+ephy_gui_gdk_rgb_to_color (guint32 color)
+{
+	GdkColor result;
+
+	result.red = ((color >> 16) & 0xFF) * 0x101;
+	result.green = ((color >> 8) & 0xFF) * 0x101;
+	result.blue = (color & 0xff) * 0x101;
+	result.pixel = 0;
+
+	return result;
+}