/*
* 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;
}
