/* testframe.c
* Copyright (C) 2007 Xan López <xan@gnome.org>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <gtk/gtk.h>
#include <math.h>
static gint hpadding = 0, vpadding = 0;
static void
spin_hpadding_cb (GtkSpinButton *spin, gpointer user_data)
{
GtkWidget *frame = user_data;
GtkCssProvider *provider;
GtkStyleContext *context;
gchar *data;
context = gtk_widget_get_style_context (frame);
provider = g_object_get_data (G_OBJECT (frame), "provider");
if (provider == NULL)
{
provider = gtk_css_provider_new ();
g_object_set_data (G_OBJECT (frame), "provider", provider);
gtk_style_context_add_provider (context,
GTK_STYLE_PROVIDER (provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
}
hpadding = (gint)gtk_spin_button_get_value (spin);
data = g_strdup_printf ("frame > border { padding: %dpx %dpx }",
vpadding, hpadding);
gtk_css_provider_load_from_data (provider, data, -1, NULL);
g_free (data);
gtk_widget_queue_resize (frame);
}
static void
spin_vpadding_cb (GtkSpinButton *spin, gpointer user_data)
{
GtkWidget *frame = user_data;
GtkCssProvider *provider;
GtkStyleContext *context;
gchar *data;
context = gtk_widget_get_style_context (frame);
provider = g_object_get_data (G_OBJECT (frame), "provider");
if (provider == NULL)
{
provider = gtk_css_provider_new ();
g_object_set_data (G_OBJECT (frame), "provider", provider);
gtk_style_context_add_provider (context,
GTK_STYLE_PROVIDER (provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
}
vpadding = (gint)gtk_spin_button_get_value (spin);
data = g_strdup_printf ("frame > border { padding: %dpx %dpx }",
vpadding, hpadding);
gtk_css_provider_load_from_data (provider, data, -1, NULL);
g_free (data);
gtk_widget_queue_resize (frame);
}
/* Function to normalize rounding errors in FP arithmetic to
our desired limits */
#define EPSILON 1e-10
static gdouble
double_normalize (gdouble n)
{
if (fabs (1.0 - n) < EPSILON)
n = 1.0;
else if (n < EPSILON)
n = 0.0;
return n;
}
static void
spin_xalign_cb (GtkSpinButton *spin, GtkFrame *frame)
{
gdouble xalign;
gfloat yalign;
xalign = double_normalize (gtk_spin_button_get_value (spin));
gtk_frame_get_label_align (frame, NULL, &yalign);
gtk_frame_set_label_align (frame, xalign, yalign);
}
static void
spin_yalign_cb (GtkSpinButton *spin, GtkFrame *frame)
{
gdouble yalign;
gfloat xalign;
yalign = double_normalize (gtk_spin_button_get_value (spin));
gtk_frame_get_label_align (frame, &xalign, NULL);
gtk_frame_set_label_align (frame, xalign, yalign);
}
static void
draw_border_cb (GtkToggleButton *toggle_button, GtkFrame *frame)
{
GtkShadowType shadow_type = gtk_toggle_button_get_active (toggle_button)
? GTK_SHADOW_IN : GTK_SHADOW_NONE;
gtk_frame_set_shadow_type (frame, shadow_type);
}
int main (int argc, char **argv)
{
GtkWidget *window, *widget;
GtkBox *vbox;
GtkFrame *frame;
GtkGrid *grid;
gfloat xalign, yalign;
gboolean draw_border;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_container_set_border_width (GTK_CONTAINER (window), 5);
gtk_window_set_default_size (GTK_WINDOW (window), 300, 300);
g_signal_connect (window, "delete-event", gtk_main_quit, NULL);
vbox = GTK_BOX (gtk_box_new (GTK_ORIENTATION_VERTICAL, 5));
g_object_set (vbox, "margin", 12, NULL);
gtk_container_add (GTK_CONTAINER (window), GTK_WIDGET (vbox));
frame = GTK_FRAME (gtk_frame_new ("Test GtkFrame"));
gtk_box_pack_start (vbox, GTK_WIDGET (frame), TRUE, TRUE, 0);
widget = gtk_button_new_with_label ("Hello!");
gtk_container_add (GTK_CONTAINER (frame), widget);
grid = GTK_GRID (gtk_grid_new ());
gtk_grid_set_row_spacing (grid, 12);
gtk_grid_set_column_spacing (grid, 6);
gtk_box_pack_start (vbox, GTK_WIDGET (grid), FALSE, FALSE, 0);
gtk_frame_get_label_align (frame, &xalign, &yalign);
/* Spin to control :label-xalign */
widget = gtk_label_new ("label xalign:");
gtk_grid_attach (grid, widget, 0, 0, 1, 1);
widget = gtk_spin_button_new_with_range (0.0, 1.0, 0.1);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), xalign);
g_signal_connect (widget, "value-changed", G_CALLBACK (spin_xalign_cb), frame);
gtk_grid_attach (grid, widget, 1, 0, 1, 1);
/* Spin to control :label-yalign */
widget = gtk_label_new ("label yalign:");
gtk_grid_attach (grid, widget, 0, 1, 1, 1);
widget = gtk_spin_button_new_with_range (0.0, 1.0, 0.1);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), yalign);
g_signal_connect (widget, "value-changed", G_CALLBACK (spin_yalign_cb), frame);
gtk_grid_attach (grid, widget, 1, 1, 1, 1);
/* Spin to control vertical padding */
widget = gtk_label_new ("vertical padding:");
gtk_grid_attach (grid, widget, 0, 2, 1, 1);
widget = gtk_spin_button_new_with_range (0, 250, 1);
g_signal_connect (widget, "value-changed", G_CALLBACK (spin_vpadding_cb), frame);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), vpadding);
gtk_grid_attach (grid, widget, 1, 2, 1, 1);
/* Spin to control horizontal padding */
widget = gtk_label_new ("horizontal padding:");
gtk_grid_attach (grid, widget, 0, 3, 1, 1);
widget = gtk_spin_button_new_with_range (0, 250, 1);
g_signal_connect (widget, "value-changed", G_CALLBACK (spin_hpadding_cb), frame);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), hpadding);
gtk_grid_attach (grid, widget, 1, 3, 1, 1);
/* CheckButton to control whether to draw border */
draw_border = gtk_frame_get_shadow_type (frame) != GTK_SHADOW_NONE;
widget = gtk_check_button_new_with_label ("draw border");
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), draw_border);
g_signal_connect (widget, "toggled", G_CALLBACK (draw_border_cb), frame);
gtk_grid_attach (grid, widget, 0, 4, 2, 1);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}