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-rw-r--r--lib/ephy-gui.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/lib/ephy-gui.c b/lib/ephy-gui.c
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--- /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;
+}
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