diff options
Diffstat (limited to 'gtk/gtkradiobutton.c')
| -rw-r--r-- | gtk/gtkradiobutton.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/gtk/gtkradiobutton.c b/gtk/gtkradiobutton.c new file mode 100644 index 000000000..0c52836e9 --- /dev/null +++ b/gtk/gtkradiobutton.c @@ -0,0 +1,321 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include "gtklabel.h" +#include "gtkradiobutton.h" +#include "gtksignal.h" + + +#define CHECK_BUTTON_CLASS(w) GTK_CHECK_BUTTON_CLASS (GTK_OBJECT (w)->klass) + + +static void gtk_radio_button_class_init (GtkRadioButtonClass *klass); +static void gtk_radio_button_init (GtkRadioButton *radio_button); +static void gtk_radio_button_destroy (GtkObject *object); +static void gtk_radio_button_clicked (GtkButton *button); +static void gtk_radio_button_draw_indicator (GtkCheckButton *check_button, + GdkRectangle *area); + + +static GtkCheckButtonClass *parent_class = NULL; + + +guint +gtk_radio_button_get_type () +{ + static guint radio_button_type = 0; + + if (!radio_button_type) + { + GtkTypeInfo radio_button_info = + { + "GtkRadioButton", + sizeof (GtkRadioButton), + sizeof (GtkRadioButtonClass), + (GtkClassInitFunc) gtk_radio_button_class_init, + (GtkObjectInitFunc) gtk_radio_button_init, + (GtkArgFunc) NULL, + }; + + radio_button_type = gtk_type_unique (gtk_check_button_get_type (), &radio_button_info); + } + + return radio_button_type; +} + +static void +gtk_radio_button_class_init (GtkRadioButtonClass *class) +{ + GtkObjectClass *object_class; + GtkButtonClass *button_class; + GtkCheckButtonClass *check_button_class; + + object_class = (GtkObjectClass*) class; + button_class = (GtkButtonClass*) class; + check_button_class = (GtkCheckButtonClass*) class; + + parent_class = gtk_type_class (gtk_check_button_get_type ()); + + object_class->destroy = gtk_radio_button_destroy; + + button_class->clicked = gtk_radio_button_clicked; + + check_button_class->draw_indicator = gtk_radio_button_draw_indicator; +} + +static void +gtk_radio_button_init (GtkRadioButton *radio_button) +{ + radio_button->group = NULL; +} + +GtkWidget* +gtk_radio_button_new (GSList *group) +{ + GtkRadioButton *radio_button; + GtkRadioButton *tmp_button; + GSList *tmp_list; + + radio_button = gtk_type_new (gtk_radio_button_get_type ()); + + tmp_list = group; + radio_button->group = g_slist_prepend (group, radio_button); + + if (tmp_list) + { + while (tmp_list) + { + tmp_button = tmp_list->data; + tmp_list = tmp_list->next; + + tmp_button->group = radio_button->group; + } + } + else + { + GTK_TOGGLE_BUTTON (radio_button)->active = TRUE; + gtk_widget_set_state (GTK_WIDGET (radio_button), GTK_STATE_ACTIVE); + } + + return GTK_WIDGET (radio_button); +} + +GtkWidget* +gtk_radio_button_new_with_label (GSList *group, + const gchar *label) +{ + GtkWidget *radio_button; + GtkWidget *label_widget; + + radio_button = gtk_radio_button_new (group); + label_widget = gtk_label_new (label); + gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5); + + gtk_container_add (GTK_CONTAINER (radio_button), label_widget); + gtk_widget_show (label_widget); + + return radio_button; +} + +GtkWidget* +gtk_radio_button_new_from_widget (GtkRadioButton *group) +{ + GSList *l = NULL; + if (group) + l = gtk_radio_button_group (group); + return gtk_radio_button_new (l); +} + + +GtkWidget* +gtk_radio_button_new_with_label_from_widget (GtkRadioButton *group, + const gchar *label) +{ + GSList *l = NULL; + if (group) + l = gtk_radio_button_group (group); + return gtk_radio_button_new_with_label (l, label); +} + +GSList* +gtk_radio_button_group (GtkRadioButton *radio_button) +{ + g_return_val_if_fail (radio_button != NULL, NULL); + g_return_val_if_fail (GTK_IS_RADIO_BUTTON (radio_button), NULL); + + return radio_button->group; +} + + +static void +gtk_radio_button_destroy (GtkObject *object) +{ + GtkRadioButton *radio_button; + GtkRadioButton *tmp_button; + GSList *tmp_list; + + g_return_if_fail (object != NULL); + g_return_if_fail (GTK_IS_RADIO_BUTTON (object)); + + radio_button = GTK_RADIO_BUTTON (object); + + radio_button->group = g_slist_remove (radio_button->group, radio_button); + tmp_list = radio_button->group; + + while (tmp_list) + { + tmp_button = tmp_list->data; + tmp_list = tmp_list->next; + + tmp_button->group = radio_button->group; + } + + if (GTK_OBJECT_CLASS (parent_class)->destroy) + (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); +} + +static void +gtk_radio_button_clicked (GtkButton *button) +{ + GtkToggleButton *toggle_button; + GtkRadioButton *radio_button; + GtkToggleButton *tmp_button; + GtkStateType new_state; + GSList *tmp_list; + gint toggled; + + g_return_if_fail (button != NULL); + g_return_if_fail (GTK_IS_RADIO_BUTTON (button)); + + radio_button = GTK_RADIO_BUTTON (button); + toggle_button = GTK_TOGGLE_BUTTON (button); + toggled = FALSE; + + if (toggle_button->active) + { + tmp_button = NULL; + tmp_list = radio_button->group; + + while (tmp_list) + { + tmp_button = tmp_list->data; + tmp_list = tmp_list->next; + + if (tmp_button->active && (tmp_button != toggle_button)) + break; + + tmp_button = NULL; + } + + if (!tmp_button) + { + new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE); + } + else + { + toggled = TRUE; + toggle_button->active = !toggle_button->active; + new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL); + } + } + else + { + toggled = TRUE; + toggle_button->active = !toggle_button->active; + + tmp_list = radio_button->group; + while (tmp_list) + { + tmp_button = tmp_list->data; + tmp_list = tmp_list->next; + + if (tmp_button->active && (tmp_button != toggle_button)) + { + gtk_button_clicked (GTK_BUTTON (tmp_button)); + break; + } + } + + new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE); + } + + if (GTK_WIDGET_STATE (button) != new_state) + gtk_widget_set_state (GTK_WIDGET (button), new_state); + if (toggled) + gtk_toggle_button_toggled (toggle_button); + gtk_widget_queue_draw (GTK_WIDGET (button)); +} + +static void +gtk_radio_button_draw_indicator (GtkCheckButton *check_button, + GdkRectangle *area) +{ + GtkWidget *widget; + GtkButton *button; + GtkToggleButton *toggle_button; + GtkStateType state_type; + GtkShadowType shadow_type; + GdkPoint pts[4]; + gint width, height; + gint x, y; + + g_return_if_fail (check_button != NULL); + g_return_if_fail (GTK_IS_RADIO_BUTTON (check_button)); + + if (GTK_WIDGET_VISIBLE (check_button) && GTK_WIDGET_MAPPED (check_button)) + { + widget = GTK_WIDGET (check_button); + button = GTK_BUTTON (check_button); + toggle_button = GTK_TOGGLE_BUTTON (check_button); + + state_type = GTK_WIDGET_STATE (widget); + if ((state_type != GTK_STATE_NORMAL) && + (state_type != GTK_STATE_PRELIGHT)) + state_type = GTK_STATE_NORMAL; + + gtk_style_set_background (widget->style, widget->window, state_type); + gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height); + + x = CHECK_BUTTON_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width; + y = (widget->allocation.height - CHECK_BUTTON_CLASS (widget)->indicator_size) / 2; + width = CHECK_BUTTON_CLASS (widget)->indicator_size; + height = CHECK_BUTTON_CLASS (widget)->indicator_size; + + if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE) + shadow_type = GTK_SHADOW_IN; + else if ((GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT) && toggle_button->active) + shadow_type = GTK_SHADOW_IN; + else + shadow_type = GTK_SHADOW_OUT; + + pts[0].x = x + width / 2; + pts[0].y = y; + pts[1].x = x + width; + pts[1].y = y + height / 2; + pts[2].x = pts[0].x; + pts[2].y = y + height; + pts[3].x = x; + pts[3].y = pts[1].y; + + gdk_draw_polygon (widget->window, + widget->style->bg_gc[GTK_WIDGET_STATE (widget)], + TRUE, pts, 4); + gtk_draw_diamond (widget->style, widget->window, + GTK_WIDGET_STATE (widget), shadow_type, + x, y, width, height); + } +} |