/* Gtk+ User Interface Builder * Copyright (C) 1999 Damon Chaplin * * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include "../gb.h" /* Include the 21x21 icon pixmap for this widget, to be used in the palette */ #include "../graphics/layout.xpm" /* * This is the GbWidget struct for this widget (see ../gbwidget.h). * It is initialized in the init() function at the end of this file */ static GbWidget gbwidget; static gchar *AreaWidth = "GtkLayout::width"; static gchar *AreaHeight = "GtkLayout::height"; /* Child properties. */ const gchar *GladeLayoutChildX = "GtkLayout::x"; const gchar *GladeLayoutChildY = "GtkLayout::y"; /* The default step increment for new layouts. */ #define GLADE_DEFAULT_STEP_INCREMENT 10 /* We only use the step increment property since the other are set automatically by the GtkLayout, or aren't relevant. */ static const gchar *HValues[] = { NULL, NULL, NULL, "GtkLayout::hstep", NULL, NULL, }; static const gchar *VValues[] = { NULL, NULL, NULL, "GtkLayout::vstep", NULL, NULL, }; static void gb_layout_adjustment_changed (GtkAdjustment *adjustment, GtkWidget *widget); /****** * NOTE: To use these functions you need to uncomment them AND add a pointer * to the function in the GbWidget struct at the end of this file. ******/ /* * Creates a new GtkWidget of class GtkLayout, performing any specialized * initialization needed for the widget to work correctly in this environment. * If a dialog box is used to initialize the widget, return NULL from this * function, and call data->callback with your new widget when it is done. */ static GtkWidget* gb_layout_new (GbWidgetNewData *data) { GtkWidget *new_widget; new_widget = gtk_layout_new (NULL, NULL); gtk_layout_set_size (GTK_LAYOUT (new_widget), 400, 400); return new_widget; } static void gb_layout_adjustment_changed (GtkAdjustment *adjustment, GtkWidget *widget) { /* We check that this is a widget in the interface being created rather than part of Glade's interface. */ if (GB_IS_GB_WIDGET (widget)) gtk_widget_queue_clear (widget); } /* * Creates the components needed to edit the extra properties of this widget. */ static void gb_layout_create_properties (GtkWidget * widget, GbWidgetCreateArgData * data) { property_add_int_range (AreaWidth, _("Area Width:"), _("The width of the layout area"), 1, 1000, 1, 10, 1); property_add_int_range (AreaHeight, _("Area Height:"), _("The height of the layout area"), 1, 1000, 1, 10, 1); property_add_adjustment (HValues, GB_ADJUST_H_LABELS); property_add_adjustment (VValues, GB_ADJUST_V_LABELS); } /* * Gets the properties of the widget. This is used for both displaying the * properties in the property editor, and also for saving the properties. */ static void gb_layout_get_properties (GtkWidget *widget, GbWidgetGetArgData * data) { gb_widget_output_int (data, AreaWidth, GTK_LAYOUT (widget)->width); gb_widget_output_int (data, AreaHeight, GTK_LAYOUT (widget)->height); gb_widget_output_adjustment (data, HValues, GTK_LAYOUT (widget)->hadjustment, "hadjustment"); gb_widget_output_adjustment (data, VValues, GTK_LAYOUT (widget)->vadjustment, "vadjustment"); } /* * Sets the properties of the widget. This is used for both applying the * properties changed in the property editor, and also for loading. */ static void gb_layout_set_properties (GtkWidget * widget, GbWidgetSetArgData * data) { gint width, height; gboolean set_size = FALSE; width = gb_widget_input_int (data, AreaWidth); if (data->apply) set_size = TRUE; else width = GTK_LAYOUT (widget)->width; height = gb_widget_input_int (data, AreaHeight); if (data->apply) set_size = TRUE; else height = GTK_LAYOUT (widget)->height; if (set_size) gtk_layout_set_size (GTK_LAYOUT (widget), width, height); gb_widget_input_adjustment (data, HValues, GTK_LAYOUT (widget)->hadjustment, "hadjustment"); gb_widget_input_adjustment (data, VValues, GTK_LAYOUT (widget)->vadjustment, "vadjustment"); } /* * Adds menu items to a context menu which is just about to appear! * Add commands to aid in editing a GtkLayout, with signals pointing to * other functions in this file. */ /* static void gb_layout_create_popup_menu (GtkWidget * widget, GbWidgetCreateMenuData * data) { } */ void gb_layout_add_child (GtkWidget *widget, GtkWidget *child, GbWidgetSetArgData *data) { gtk_layout_put (GTK_LAYOUT (widget), child, 0, 0); } /* * Writes the source code needed to create this widget. * You have to output everything necessary to create the widget here, though * there are some convenience functions to help. */ static void gb_layout_write_source (GtkWidget * widget, GbWidgetWriteSourceData * data) { if (data->create_widget) { source_add (data, " %s = gtk_layout_new (NULL, NULL);\n", data->wname); } gb_widget_write_standard_source (widget, data); source_add (data, " gtk_layout_set_size (GTK_LAYOUT (%s), %i, %i);\n", data->wname, GTK_LAYOUT (widget)->width, GTK_LAYOUT (widget)->height); source_add (data, " GTK_ADJUSTMENT (GTK_LAYOUT (%s)->hadjustment)->step_increment = %g;\n", data->wname, GTK_ADJUSTMENT (GTK_LAYOUT (widget)->hadjustment)->step_increment); source_add (data, " GTK_ADJUSTMENT (GTK_LAYOUT (%s)->vadjustment)->step_increment = %g;\n", data->wname, GTK_ADJUSTMENT (GTK_LAYOUT (widget)->vadjustment)->step_increment); } /* * Creates the child packing properties for children of this widget. */ void gb_layout_create_child_properties (GtkWidget * widget, GbWidgetCreateChildArgData * data) { property_add_int_range (GladeLayoutChildX, _("X:"), _("The X coordinate of the widget in the GtkLayout"), 0, 10000, 1, 10, 1); property_add_int_range (GladeLayoutChildY, _("Y:"), _("The Y coordinate of the widget in the GtkLayout"), 0, 10000, 1, 10, 1); } /* Shows or saves the child properties of a child of a layout. */ void gb_layout_get_child_properties (GtkWidget *widget, GtkWidget *child, GbWidgetGetArgData *data) { gint x, y; if (data->action == GB_SAVING) save_start_tag (data, "packing"); gtk_container_child_get (GTK_CONTAINER (widget), child, "x", &x, "y", &y, NULL); gb_widget_output_int (data, GladeLayoutChildX, x); gb_widget_output_int (data, GladeLayoutChildY, y); if (data->action == GB_SAVING) save_end_tag (data, "packing"); } /* Applies or loads the child properties of a child of a layout. */ void gb_layout_set_child_properties (GtkWidget *widget, GtkWidget *child, GbWidgetSetArgData *data) { gint x, y; x = gb_widget_input_int (data, GladeLayoutChildX); if (data->apply) gtk_container_child_set (GTK_CONTAINER (widget), child, "x", x, NULL); y = gb_widget_input_int (data, GladeLayoutChildY); if (data->apply) gtk_container_child_set (GTK_CONTAINER (widget), child, "y", y, NULL); } /* Outputs source to add a child widget to a layout. */ static void gb_layout_write_add_child_source (GtkWidget * parent, const gchar *parent_name, GtkWidget *child, GbWidgetWriteSourceData * data) { gint x, y; gtk_container_child_get (GTK_CONTAINER (parent), child, "x", &x, "y", &y, NULL); source_add (data, " gtk_layout_put (GTK_LAYOUT (%s), %s, %i, %i);\n", parent_name, data->wname, x, y); } static gboolean gb_layout_emission_hook (GSignalInvocationHint *ihint, guint n_param_values, const GValue *param_values, gpointer data) { GtkObject *object, *hadjustment, *vadjustment; GtkObject *old_hadjustment, *old_vadjustment; object = g_value_get_object (param_values); g_return_val_if_fail (GTK_IS_LAYOUT (object), FALSE); hadjustment = g_value_get_object (param_values + 1); vadjustment = g_value_get_object (param_values + 2); old_hadjustment = gtk_object_get_data (object, "scrollhadjustment"); if (hadjustment != old_hadjustment) { gtk_object_set_data (object, "scrollhadjustment", hadjustment); if (hadjustment) { gtk_signal_connect (hadjustment, "value_changed", (GtkSignalFunc) gb_layout_adjustment_changed, object); GTK_ADJUSTMENT (hadjustment)->step_increment = GLADE_DEFAULT_STEP_INCREMENT; if (property_get_widget () == GTK_WIDGET (object)) { property_set_auto_apply (FALSE); property_set_float (HValues[3], GLADE_DEFAULT_STEP_INCREMENT); property_set_auto_apply (TRUE); } } } old_vadjustment = gtk_object_get_data (object, "scrollvadjustment"); if (vadjustment != old_vadjustment) { gtk_object_set_data (object, "scrollvadjustment", vadjustment); if (vadjustment) { gtk_signal_connect (vadjustment, "value_changed", (GtkSignalFunc) gb_layout_adjustment_changed, object); GTK_ADJUSTMENT (vadjustment)->step_increment = GLADE_DEFAULT_STEP_INCREMENT; if (property_get_widget () == GTK_WIDGET (object)) { property_set_auto_apply (FALSE); property_set_float (VValues[3], GLADE_DEFAULT_STEP_INCREMENT); property_set_auto_apply (TRUE); } } } return TRUE; } /* * Initializes the GbWidget structure. * I've placed this at the end of the file so we don't have to include * declarations of all the functions. */ GbWidget* gb_layout_init () { GtkWidgetClass *klass; /* Initialise the GTK type */ volatile GtkType type; type = gtk_layout_get_type(); /* Add a signal emission hook so we can connect signal handlers to the scrollbar adjustments to redraw the layout when necessary. This will also work for subclasses of GtkLayout. */ klass = gtk_type_class (gtk_layout_get_type ()); g_signal_add_emission_hook (klass->set_scroll_adjustments_signal, 0, gb_layout_emission_hook, NULL, NULL); /* Initialize the GbWidget structure */ gb_widget_init_struct(&gbwidget); /* Fill in the pixmap struct & tooltip */ gbwidget.pixmap_struct = layout_xpm; gbwidget.tooltip = _("Layout"); /* Fill in any functions that this GbWidget has */ gbwidget.gb_widget_new = gb_layout_new; gbwidget.gb_widget_create_properties = gb_layout_create_properties; gbwidget.gb_widget_get_properties = gb_layout_get_properties; gbwidget.gb_widget_set_properties = gb_layout_set_properties; gbwidget.gb_widget_write_source = gb_layout_write_source; gbwidget.gb_widget_create_child_properties = gb_layout_create_child_properties; gbwidget.gb_widget_get_child_properties = gb_layout_get_child_properties; gbwidget.gb_widget_set_child_properties = gb_layout_set_child_properties; gbwidget.gb_widget_write_add_child_source = gb_layout_write_add_child_source; gbwidget.gb_widget_add_child = gb_layout_add_child; /* gbwidget.gb_widget_create_popup_menu = gb_layout_create_popup_menu; */ return &gbwidget; }