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/*
* $Id: gwygraphcorner.c 20678 2017-12-18 18:26:55Z yeti-dn $
* Copyright (C) 2003 David Necas (Yeti), Petr Klapetek.
* E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
*
* 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 of the License, 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <gtk/gtkwidget.h>
#include <libgwyddion/gwymacros.h>
#include <libgwydgets/gwygraphcorner.h>
static void gwy_graph_corner_realize (GtkWidget *widget);
static void gwy_graph_corner_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gwy_graph_corner_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gwy_graph_corner_expose (GtkWidget *widget,
GdkEventExpose *event);
G_DEFINE_TYPE(GwyGraphCorner, gwy_graph_corner, GTK_TYPE_WIDGET)
static void
gwy_graph_corner_class_init(GwyGraphCornerClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
widget_class->realize = gwy_graph_corner_realize;
widget_class->expose_event = gwy_graph_corner_expose;
widget_class->size_request = gwy_graph_corner_size_request;
widget_class->size_allocate = gwy_graph_corner_size_allocate;
}
static void
gwy_graph_corner_init(G_GNUC_UNUSED GwyGraphCorner *graph_corner)
{
}
/**
* gwy_graph_corner_new:
*
* Creates a new graph corner.
*
* Returns: A new graph corner as a #GtkWidget.
**/
GtkWidget*
gwy_graph_corner_new()
{
GwyGraphCorner *graph_corner;
graph_corner = g_object_new(GWY_TYPE_GRAPH_CORNER, NULL);
return GTK_WIDGET(graph_corner);
}
static void
gwy_graph_corner_realize(GtkWidget *widget)
{
GdkWindowAttr attributes;
gint i, attributes_mask;
GtkStyle *style;
GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.visual = gtk_widget_get_visual(widget);
attributes.colormap = gtk_widget_get_colormap(widget);
attributes.event_mask = gtk_widget_get_events(widget);
attributes.event_mask |= GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new(widget->parent->window,
&attributes, attributes_mask);
gdk_window_set_user_data(widget->window, widget);
widget->style = gtk_style_attach(widget->style, widget->window);
/* set background to white forever */
style = gtk_style_copy(widget->style);
for (i = 0; i < 5; i++) {
style->bg_gc[i] = widget->style->white_gc;
style->bg[i] = widget->style->white;
}
gtk_style_set_background(style, widget->window, GTK_STATE_NORMAL);
g_object_unref(style);
}
static void
gwy_graph_corner_size_request(G_GNUC_UNUSED GtkWidget *widget,
GtkRequisition *requisition)
{
requisition->width = 0;
requisition->height = 0;
}
static void
gwy_graph_corner_size_allocate(GtkWidget *widget,
GtkAllocation *allocation)
{
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED(widget)) {
gdk_window_move_resize(widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
}
}
static gboolean
gwy_graph_corner_expose(GtkWidget *widget,
GdkEventExpose *event)
{
if (event->count > 0)
return FALSE;
gdk_window_clear_area(widget->window,
0, 0,
widget->allocation.width,
widget->allocation.height);
return FALSE;
}
/************************** Documentation ****************************/
/**
* SECTION:gwygraphcorner
* @title: GwyGraphCorner
* @short_description: Graph corners
*
* #GwyGraphCorner is a part of #GwyGraph and it currently has no
* functionality. It is reserved for future. It will be probably used for
* some graph options quick accesibility.
**/
/* vim: set cin et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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