forked from AuroraMiddleware/gtk
235 lines
6.8 KiB
C
235 lines
6.8 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gtksignal.h"
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#include "gtkeventbox.h"
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static void gtk_event_box_class_init (GtkEventBoxClass *klass);
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static void gtk_event_box_init (GtkEventBox *event_box);
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static void gtk_event_box_realize (GtkWidget *widget);
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static void gtk_event_box_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static void gtk_event_box_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_event_box_draw (GtkWidget *widget,
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GdkRectangle *area);
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static gint gtk_event_box_expose (GtkWidget *widget,
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GdkEventExpose *event);
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guint
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gtk_event_box_get_type (void)
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{
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static guint event_box_type = 0;
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if (!event_box_type)
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{
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GtkTypeInfo event_box_info =
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{
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"GtkEventBox",
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sizeof (GtkEventBox),
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sizeof (GtkEventBoxClass),
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(GtkClassInitFunc) gtk_event_box_class_init,
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(GtkObjectInitFunc) gtk_event_box_init,
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(GtkArgSetFunc) NULL,
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(GtkArgGetFunc) NULL,
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};
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event_box_type = gtk_type_unique (gtk_bin_get_type (), &event_box_info);
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}
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return event_box_type;
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}
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static void
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gtk_event_box_class_init (GtkEventBoxClass *class)
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{
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GtkWidgetClass *widget_class;
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widget_class = (GtkWidgetClass*) class;
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widget_class->realize = gtk_event_box_realize;
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widget_class->size_request = gtk_event_box_size_request;
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widget_class->size_allocate = gtk_event_box_size_allocate;
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widget_class->draw = gtk_event_box_draw;
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widget_class->expose_event = gtk_event_box_expose;
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}
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static void
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gtk_event_box_init (GtkEventBox *event_box)
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{
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GTK_WIDGET_UNSET_FLAGS (event_box, GTK_NO_WINDOW);
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GTK_WIDGET_SET_FLAGS (event_box, GTK_BASIC);
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}
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GtkWidget*
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gtk_event_box_new (void)
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{
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return GTK_WIDGET ( gtk_type_new (gtk_event_box_get_type ()));
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}
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static void
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gtk_event_box_realize (GtkWidget *widget)
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{
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GdkWindowAttr attributes;
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gint attributes_mask;
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gint border_width;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_EVENT_BOX (widget));
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GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
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border_width = GTK_CONTAINER (widget)->border_width;
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attributes.x = widget->allocation.x + border_width;
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attributes.y = widget->allocation.y + border_width;
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attributes.width = widget->allocation.width - 2*border_width;
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attributes.height = widget->allocation.height - 2*border_width;
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attributes.window_type = GDK_WINDOW_CHILD;
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attributes.wclass = GDK_INPUT_OUTPUT;
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attributes.visual = gtk_widget_get_visual (widget);
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attributes.colormap = gtk_widget_get_colormap (widget);
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attributes.event_mask = gtk_widget_get_events (widget)
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| GDK_BUTTON_MOTION_MASK
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| GDK_BUTTON_PRESS_MASK
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| GDK_BUTTON_RELEASE_MASK
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| GDK_EXPOSURE_MASK
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| GDK_ENTER_NOTIFY_MASK
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| GDK_LEAVE_NOTIFY_MASK;
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attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
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widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
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gdk_window_set_user_data (widget->window, widget);
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widget->style = gtk_style_attach (widget->style, widget->window);
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gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
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}
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static void
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gtk_event_box_size_request (GtkWidget *widget,
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GtkRequisition *requisition)
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{
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GtkBin *bin;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_EVENT_BOX (widget));
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g_return_if_fail (requisition != NULL);
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bin = GTK_BIN (widget);
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requisition->width = GTK_CONTAINER (widget)->border_width * 2;
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requisition->height = GTK_CONTAINER (widget)->border_width * 2;
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if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
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{
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gtk_widget_size_request (bin->child, &bin->child->requisition);
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requisition->width += bin->child->requisition.width;
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requisition->height += bin->child->requisition.height;
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}
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}
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static void
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gtk_event_box_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkBin *bin;
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GtkAllocation child_allocation;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_EVENT_BOX (widget));
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g_return_if_fail (allocation != NULL);
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widget->allocation = *allocation;
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bin = GTK_BIN (widget);
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child_allocation.x = 0;
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child_allocation.y = 0;
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child_allocation.width = MAX (allocation->width - GTK_CONTAINER (widget)->border_width * 2, 0);
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child_allocation.height = MAX (allocation->height - GTK_CONTAINER (widget)->border_width * 2, 0);
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if (GTK_WIDGET_REALIZED (widget))
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{
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gdk_window_move_resize (widget->window,
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allocation->x + GTK_CONTAINER (widget)->border_width,
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allocation->y + GTK_CONTAINER (widget)->border_width,
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child_allocation.width,
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child_allocation.height);
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}
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if (bin->child)
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{
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gtk_widget_size_allocate (bin->child, &child_allocation);
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}
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}
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static void
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gtk_event_box_draw (GtkWidget *widget,
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GdkRectangle *area)
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{
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GtkBin *bin;
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GdkRectangle tmp_area;
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GdkRectangle child_area;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_EVENT_BOX (widget));
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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bin = GTK_BIN (widget);
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tmp_area = *area;
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tmp_area.x -= GTK_CONTAINER (widget)->border_width;
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tmp_area.y -= GTK_CONTAINER (widget)->border_width;
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if (bin->child)
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{
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if (gtk_widget_intersect (bin->child, &tmp_area, &child_area))
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gtk_widget_draw (bin->child, &child_area);
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}
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}
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}
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static gint
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gtk_event_box_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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GtkBin *bin;
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GdkEventExpose child_event;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_EVENT_BOX (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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bin = GTK_BIN (widget);
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child_event = *event;
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if (bin->child &&
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GTK_WIDGET_NO_WINDOW (bin->child) &&
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gtk_widget_intersect (bin->child, &event->area, &child_event.area))
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gtk_widget_event (bin->child, (GdkEvent*) &child_event);
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}
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return FALSE;
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}
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