/* 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_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); } static void quit_cb (GtkWidget *widget, gpointer data) { gboolean *done = data; *done = TRUE; g_main_context_wakeup (NULL); } int main (int argc, char **argv) { GtkWidget *window, *widget; GtkBox *vbox; GtkFrame *frame; GtkGrid *grid; gfloat xalign; gboolean draw_border; gboolean done = FALSE; gtk_init (); window = gtk_window_new (); gtk_window_set_default_size (GTK_WINDOW (window), 300, 300); g_signal_connect (window, "destroy", G_CALLBACK (quit_cb), &done); vbox = GTK_BOX (gtk_box_new (GTK_ORIENTATION_VERTICAL, 5)); gtk_widget_set_margin_start (vbox, 12); gtk_widget_set_margin_end (vbox, 12); gtk_widget_set_margin_top (vbox, 12); gtk_widget_set_margin_bottom (vbox, 12); 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_container_add (GTK_CONTAINER (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_container_add (GTK_CONTAINER (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); while (!done) g_main_context_iteration (NULL, TRUE); return 0; }