From 6876ede98282c7db318089bfefb292aa59e55d48 Mon Sep 17 00:00:00 2001 From: Marco Pesenti Gritti Date: Mon, 30 Dec 2002 19:29:24 +0000 Subject: Initial revision --- lib/ephy-gui.c | 352 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 352 insertions(+) create mode 100644 lib/ephy-gui.c (limited to 'lib/ephy-gui.c') 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 +#include +#include +#include + +/* 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; +} -- cgit v1.2.3