/* testframe.c * Copyright (C) 2007 Xan López * * 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 . */ #include #include static void spin_ythickness_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 ("GtkFrame { 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_xthickness_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 ("GtkFrame { 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; 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); } int main (int argc, char **argv) { GtkStyleContext *context; GtkBorder pad; GtkWidget *window, *frame, *xthickness_spin, *ythickness_spin, *vbox; GtkWidget *xalign_spin, *yalign_spin, *button, *grid, *label; gfloat xalign, yalign; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_default_size (GTK_WINDOW (window), 300, 300); g_signal_connect (G_OBJECT (window), "delete-event", gtk_main_quit, NULL); vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5); gtk_container_add (GTK_CONTAINER (window), vbox); frame = gtk_frame_new ("Testing"); gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE); button = gtk_button_new_with_label ("Hello!"); gtk_container_add (GTK_CONTAINER (frame), button); grid = gtk_grid_new (); gtk_box_pack_start (GTK_BOX (vbox), grid, FALSE, FALSE); context = gtk_widget_get_style_context (frame); 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); /* Spin to control xthickness */ label = gtk_label_new ("xthickness: "); gtk_grid_attach (GTK_GRID (grid), label, 0, 0, 1, 1); xthickness_spin = gtk_spin_button_new_with_range (0, 250, 1); g_signal_connect (G_OBJECT (xthickness_spin), "value-changed", G_CALLBACK (spin_xthickness_cb), frame); gtk_spin_button_set_value (GTK_SPIN_BUTTON (xthickness_spin), pad.left); gtk_grid_attach (GTK_GRID (grid), xthickness_spin, 1, 0, 1, 1); /* Spin to control ythickness */ label = gtk_label_new ("ythickness: "); gtk_grid_attach (GTK_GRID (grid), label, 0, 1, 1, 1); ythickness_spin = gtk_spin_button_new_with_range (0, 250, 1); g_signal_connect (G_OBJECT (ythickness_spin), "value-changed", G_CALLBACK (spin_ythickness_cb), frame); gtk_spin_button_set_value (GTK_SPIN_BUTTON (ythickness_spin), pad.top); gtk_grid_attach (GTK_GRID (grid), ythickness_spin, 1, 1, 1, 1); gtk_frame_get_label_align (GTK_FRAME (frame), &xalign, &yalign); /* Spin to control label xalign */ label = gtk_label_new ("xalign: "); gtk_grid_attach (GTK_GRID (grid), label, 0, 2, 1, 1); xalign_spin = gtk_spin_button_new_with_range (0.0, 1.0, 0.1); g_signal_connect (G_OBJECT (xalign_spin), "value-changed", G_CALLBACK (spin_xalign_cb), frame); gtk_spin_button_set_value (GTK_SPIN_BUTTON (xalign_spin), xalign); gtk_grid_attach (GTK_GRID (grid), xalign_spin, 1, 2, 1, 1); /* Spin to control label yalign */ label = gtk_label_new ("yalign: "); gtk_grid_attach (GTK_GRID (grid), label, 0, 3, 1, 1); yalign_spin = gtk_spin_button_new_with_range (0.0, 1.0, 0.1); g_signal_connect (G_OBJECT (yalign_spin), "value-changed", G_CALLBACK (spin_yalign_cb), frame); gtk_spin_button_set_value (GTK_SPIN_BUTTON (yalign_spin), yalign); gtk_grid_attach (GTK_GRID (grid), yalign_spin, 1, 3, 1, 1); gtk_widget_show_all (window); gtk_main (); return 0; }