gtk/tests/testframe.c
Daniel Boles e4578ca7bf Frame: Erase the now-useless property label-yalign
The border is now drawn on the frame node, not using an internal border
node, so we are no longer able to align the label to vertically overlap
the border. The property no longer performs its original purpose, & nor
is it a useful candidate for giving a new role, so no point keeping it.

https://bugzilla.gnome.org/show_bug.cgi?id=778886
2018-03-12 14:17:32 +00:00

201 lines
6.2 KiB
C

/* 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 void
spin_hpadding_cb (GtkSpinButton *spin, gpointer user_data)
{
GtkWidget *frame = user_data;
GtkCssProvider *provider;
GtkStyleContext *context;
gchar *data;
GtkBorder pad;
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);
}
gtk_style_context_save (context);
gtk_style_context_set_state (context, GTK_STATE_FLAG_NORMAL);
gtk_style_context_get_padding (context, &pad);
gtk_style_context_restore (context);
data = g_strdup_printf ("frame { padding: %dpx %dpx }",
pad.top,
(gint)gtk_spin_button_get_value (spin));
gtk_css_provider_load_from_data (provider, data, -1);
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;
GtkBorder pad;
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);
}
gtk_style_context_save (context);
gtk_style_context_set_state (context, GTK_STATE_FLAG_NORMAL);
gtk_style_context_get_padding (context, &pad);
gtk_style_context_restore (context);
data = g_strdup_printf ("frame { padding: %dpx %dpx }",
(gint)gtk_spin_button_get_value (spin),
pad.left);
gtk_css_provider_load_from_data (provider, data, -1);
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;
xalign = double_normalize (gtk_spin_button_get_value (spin));
gtk_frame_set_label_align (frame, xalign);
}
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;
gboolean draw_border;
gtk_init ();
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 300, 300);
g_signal_connect (window, "destroy", 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_widget_set_vexpand (GTK_WIDGET (frame), TRUE);
gtk_box_pack_start (vbox, GTK_WIDGET (frame));
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));
xalign = gtk_frame_get_label_align (frame);
/* 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 vertical padding */
widget = gtk_label_new ("vertical padding:");
gtk_grid_attach (grid, widget, 0, 1, 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), 0);
gtk_grid_attach (grid, widget, 1, 1, 1, 1);
/* Spin to control horizontal padding */
widget = gtk_label_new ("horizontal 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_hpadding_cb), frame);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), 0);
gtk_grid_attach (grid, widget, 1, 2, 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, 3, 1, 1);
gtk_widget_show (window);
gtk_main ();
return 0;
}