forked from AuroraMiddleware/gtk
742d01908f
anyways, here go the child args and a lot of cleanups ;) you wouldn't want me to put the ChangeLog entry in here, would you?
412 lines
11 KiB
C
412 lines
11 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include "gtklabel.h"
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enum {
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ARG_0,
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ARG_LABEL,
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ARG_JUSTIFY
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};
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static void gtk_label_class_init (GtkLabelClass *klass);
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static void gtk_label_init (GtkLabel *label);
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static void gtk_label_set_arg (GtkLabel *label,
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GtkArg *arg,
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guint arg_id);
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static void gtk_label_get_arg (GtkLabel *label,
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GtkArg *arg,
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guint arg_id);
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static void gtk_label_finalize (GtkObject *object);
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static void gtk_label_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static gint gtk_label_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gtk_label_state_changed (GtkWidget *widget,
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guint previous_state);
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static void gtk_label_style_set (GtkWidget *widget,
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GtkStyle *previous_style);
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static GtkMiscClass *parent_class = NULL;
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GtkType
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gtk_label_get_type (void)
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{
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static GtkType label_type = 0;
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if (!label_type)
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{
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GtkTypeInfo label_info =
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{
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"GtkLabel",
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sizeof (GtkLabel),
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sizeof (GtkLabelClass),
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(GtkClassInitFunc) gtk_label_class_init,
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(GtkObjectInitFunc) gtk_label_init,
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(GtkArgSetFunc) gtk_label_set_arg,
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(GtkArgGetFunc) gtk_label_get_arg,
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};
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label_type = gtk_type_unique (gtk_misc_get_type (), &label_info);
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gtk_type_set_chunk_alloc (label_type, 32);
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}
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return label_type;
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}
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static void
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gtk_label_class_init (GtkLabelClass *class)
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{
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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object_class = (GtkObjectClass*) class;
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widget_class = (GtkWidgetClass*) class;
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parent_class = gtk_type_class (gtk_misc_get_type ());
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gtk_object_add_arg_type ("GtkLabel::label", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_LABEL);
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gtk_object_add_arg_type ("GtkLabel::justify", GTK_TYPE_JUSTIFICATION, GTK_ARG_READWRITE, ARG_JUSTIFY);
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object_class->finalize = gtk_label_finalize;
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widget_class->size_request = gtk_label_size_request;
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widget_class->expose_event = gtk_label_expose;
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widget_class->style_set = gtk_label_style_set;
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widget_class->state_changed = gtk_label_state_changed;
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}
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static void
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gtk_label_set_arg (GtkLabel *label,
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GtkArg *arg,
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guint arg_id)
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{
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switch (arg_id)
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{
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case ARG_LABEL:
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gtk_label_set (label, GTK_VALUE_STRING (*arg));
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break;
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case ARG_JUSTIFY:
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gtk_label_set_justify (label, GTK_VALUE_ENUM (*arg));
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break;
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default:
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break;
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}
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}
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static void
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gtk_label_get_arg (GtkLabel *label,
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GtkArg *arg,
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guint arg_id)
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{
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switch (arg_id)
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{
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case ARG_LABEL:
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GTK_VALUE_STRING (*arg) = g_strdup (label->label);
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break;
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case ARG_JUSTIFY:
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GTK_VALUE_ENUM (*arg) = label->jtype;
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break;
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default:
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arg->type = GTK_TYPE_INVALID;
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break;
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}
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}
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static void
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gtk_label_init (GtkLabel *label)
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{
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GTK_WIDGET_SET_FLAGS (label, GTK_NO_WINDOW);
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label->label = NULL;
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label->row = NULL;
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label->max_width = 0;
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label->jtype = GTK_JUSTIFY_CENTER;
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label->needs_clear = FALSE;
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gtk_label_set (label, "");
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}
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GtkWidget*
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gtk_label_new (const gchar *str)
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{
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GtkLabel *label;
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g_return_val_if_fail (str != NULL, NULL);
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label = gtk_type_new (gtk_label_get_type ());
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gtk_label_set (label, str);
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return GTK_WIDGET (label);
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}
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void
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gtk_label_set (GtkLabel *label,
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const gchar *str)
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{
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char* p;
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g_return_if_fail (label != NULL);
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g_return_if_fail (GTK_IS_LABEL (label));
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g_return_if_fail (str != NULL);
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if (label->label)
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g_free (label->label);
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label->label = g_strdup (str);
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if (label->row)
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g_slist_free (label->row);
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label->row = NULL;
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label->row = g_slist_append (label->row, label->label);
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p = label->label;
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while ((p = strchr(p, '\n')))
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label->row = g_slist_append (label->row, ++p);
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if (GTK_WIDGET_VISIBLE (label))
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{
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if (GTK_WIDGET_MAPPED (label))
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gdk_window_clear_area (GTK_WIDGET (label)->window,
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GTK_WIDGET (label)->allocation.x,
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GTK_WIDGET (label)->allocation.y,
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GTK_WIDGET (label)->allocation.width,
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GTK_WIDGET (label)->allocation.height);
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gtk_widget_queue_resize (GTK_WIDGET (label));
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}
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}
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void
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gtk_label_set_justify (GtkLabel *label,
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GtkJustification jtype)
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{
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g_return_if_fail (label != NULL);
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g_return_if_fail (GTK_IS_LABEL (label));
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if ((GtkJustification) label->jtype != jtype)
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{
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label->jtype = jtype;
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if (GTK_WIDGET_VISIBLE (label))
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{
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if (GTK_WIDGET_MAPPED (label))
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gdk_window_clear_area (GTK_WIDGET (label)->window,
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GTK_WIDGET (label)->allocation.x,
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GTK_WIDGET (label)->allocation.y,
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GTK_WIDGET (label)->allocation.width,
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GTK_WIDGET (label)->allocation.height);
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gtk_widget_queue_resize (GTK_WIDGET (label));
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}
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}
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}
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void
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gtk_label_get (GtkLabel *label,
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gchar **str)
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{
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g_return_if_fail (label != NULL);
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g_return_if_fail (GTK_IS_LABEL (label));
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g_return_if_fail (str != NULL);
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*str = label->label;
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}
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static void
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gtk_label_finalize (GtkObject *object)
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{
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GtkLabel *label;
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g_return_if_fail (object != NULL);
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g_return_if_fail (GTK_IS_LABEL (object));
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label = GTK_LABEL (object);
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g_free (label->label);
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g_slist_free (label->row);
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(* GTK_OBJECT_CLASS (parent_class)->finalize) (object);
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}
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static void
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gtk_label_size_request (GtkWidget *widget,
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GtkRequisition *requisition)
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{
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GtkLabel *label;
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GSList *row;
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gint width;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_LABEL (widget));
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g_return_if_fail (requisition != NULL);
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label = GTK_LABEL (widget);
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row = label->row;
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width = 0;
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while (row)
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{
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if (row->next)
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width = MAX (width,
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gdk_text_width (GTK_WIDGET (label)->style->font,
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row->data,
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(gchar*) row->next->data - (gchar*) row->data - 1));
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else
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width = MAX (width, gdk_string_width (GTK_WIDGET (label)->style->font, row->data));
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row = row->next;
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}
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label->max_width = width;
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requisition->width = width + label->misc.xpad * 2;
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requisition->height = ((GTK_WIDGET (label)->style->font->ascent +
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GTK_WIDGET (label)->style->font->descent + 2) *
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g_slist_length(label->row) +
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label->misc.ypad * 2);
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}
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static gint
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gtk_label_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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GtkLabel *label;
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GtkMisc *misc;
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GSList *row;
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gint state;
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gint offset;
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gint len;
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gint x, y;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_LABEL (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
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{
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label = GTK_LABEL (widget);
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misc = GTK_MISC (widget);
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state = widget->state;
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/*
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* GC Clipping
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*/
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gdk_gc_set_clip_rectangle (widget->style->white_gc, &event->area);
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gdk_gc_set_clip_rectangle (widget->style->fg_gc[state], &event->area);
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/* We clear the whole allocation here so that if a partial
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* expose is triggered we don't just clear part and mess up
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* when the queued redraw comes along. (There will always
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* be a complete queued redraw when the needs_clear flag
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* is set.)
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*/
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if (label->needs_clear)
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{
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gdk_window_clear_area (widget->window,
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widget->allocation.x,
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widget->allocation.y,
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widget->allocation.width,
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widget->allocation.height);
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label->needs_clear = FALSE;
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}
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x = widget->allocation.x + misc->xpad +
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(widget->allocation.width - (label->max_width + label->misc.xpad * 2))
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* misc->xalign + 0.5;
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y = (widget->allocation.y * (1.0 - misc->yalign) +
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(widget->allocation.y + widget->allocation.height -
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(widget->requisition.height - misc->ypad * 2)) *
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misc->yalign + widget->style->font->ascent) + 1.5;
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row = label->row;
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while (row && row->next)
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{
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len = (gchar*) row->next->data - (gchar*) row->data - 1;
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offset = 0;
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if (label->jtype == GTK_JUSTIFY_CENTER)
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offset = (label->max_width - gdk_text_width (widget->style->font, row->data, len)) / 2;
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else if (label->jtype == GTK_JUSTIFY_RIGHT)
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offset = (label->max_width - gdk_text_width (widget->style->font, row->data, len));
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if (state == GTK_STATE_INSENSITIVE)
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gdk_draw_text (widget->window, widget->style->font,
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widget->style->white_gc,
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offset + x + 1, y + 1, row->data, len);
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gdk_draw_text (widget->window, widget->style->font,
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widget->style->fg_gc[state],
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offset + x, y, row->data, len);
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row = row->next;
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y += widget->style->font->ascent + widget->style->font->descent + 2;
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}
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/*
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* COMMENT: we can avoid gdk_text_width() calls here storing in label->row
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* the widths of the rows calculated in gtk_label_set.
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* Once we have a wrapping interface we can support GTK_JUSTIFY_FILL.
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*/
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offset = 0;
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if (label->jtype == GTK_JUSTIFY_CENTER)
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offset = (label->max_width - gdk_string_width (widget->style->font, row->data)) / 2;
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else if (label->jtype == GTK_JUSTIFY_RIGHT)
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offset = (label->max_width - gdk_string_width (widget->style->font, row->data));
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if (state == GTK_STATE_INSENSITIVE)
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gdk_draw_string (widget->window, widget->style->font,
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widget->style->white_gc,
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offset + x + 1, y + 1, row->data);
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gdk_draw_string (widget->window, widget->style->font,
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widget->style->fg_gc[state],
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offset + x, y, row->data);
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gdk_gc_set_clip_mask (widget->style->white_gc, NULL);
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gdk_gc_set_clip_mask (widget->style->fg_gc[state], NULL);
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}
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return TRUE;
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}
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static void
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gtk_label_state_changed (GtkWidget *widget,
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guint previous_state)
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{
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if (GTK_WIDGET_DRAWABLE (widget))
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GTK_LABEL (widget)->needs_clear = TRUE;
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}
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static void
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gtk_label_style_set (GtkWidget *widget,
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GtkStyle *previous_style)
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{
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if (GTK_WIDGET_DRAWABLE (widget))
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GTK_LABEL (widget)->needs_clear = TRUE;
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}
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