diff options
Diffstat (limited to 'widgets/misc/e-clipped-label.c')
| -rw-r--r-- | widgets/misc/e-clipped-label.c | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/widgets/misc/e-clipped-label.c b/widgets/misc/e-clipped-label.c deleted file mode 100644 index 6f6fc9731d..0000000000 --- a/widgets/misc/e-clipped-label.c +++ /dev/null @@ -1,378 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ - -/* - * Author : - * Damon Chaplin <damon@helixcode.com> - * - * Copyright 1999, Helix Code, Inc. - * - * 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 - */ - -/* - * This is similar to GtkLabel but clips itself and displays '...' if it - * can't fit inside its allocated area. The intended use is for inside buttons - * that are a fixed size. The GtkLabel would normally display only the middle - * part of the text, which doesn't look very good. This only supports one line - * of text (so no wrapping/justification), without underlined characters. - */ - -#include <math.h> - -#include <gdk/gdki18n.h> -#include <libgnome/gnome-defs.h> -#include <libgnome/gnome-i18n.h> - -#include "e-clipped-label.h" - - -static void e_clipped_label_class_init (EClippedLabelClass *class); -static void e_clipped_label_init (EClippedLabel *label); -static void e_clipped_label_size_request (GtkWidget *widget, - GtkRequisition *requisition); -static void e_clipped_label_size_allocate (GtkWidget *widget, - GtkAllocation *allocation); -static gint e_clipped_label_expose (GtkWidget *widget, - GdkEventExpose *event); -static void e_clipped_label_recalc_chars_displayed (EClippedLabel *label); -static void e_clipped_label_destroy (GtkObject *object); - - -static GtkMiscClass *parent_class; - -/* This is the string to draw when the label is clipped, e.g. '...'. */ -static gchar *e_clipped_label_ellipsis; - -/* Flags used in chars_displayed field. Must be negative. */ -#define E_CLIPPED_LABEL_NEED_RECALC -1 -#define E_CLIPPED_LABEL_SHOW_ENTIRE_LABEL -2 - - -GtkType -e_clipped_label_get_type (void) -{ - static GtkType e_clipped_label_type = 0; - - if (!e_clipped_label_type){ - GtkTypeInfo e_clipped_label_info = { - "EClippedLabel", - sizeof (EClippedLabel), - sizeof (EClippedLabelClass), - (GtkClassInitFunc) e_clipped_label_class_init, - (GtkObjectInitFunc) e_clipped_label_init, - NULL, /* reserved 1 */ - NULL, /* reserved 2 */ - (GtkClassInitFunc) NULL - }; - - parent_class = gtk_type_class (GTK_TYPE_MISC); - e_clipped_label_type = gtk_type_unique (GTK_TYPE_MISC, - &e_clipped_label_info); - } - - return e_clipped_label_type; -} - - -static void -e_clipped_label_class_init (EClippedLabelClass *class) -{ - GtkObjectClass *object_class; - GtkWidgetClass *widget_class; - - object_class = (GtkObjectClass *) class; - widget_class = (GtkWidgetClass *) class; - - /* Method override */ - widget_class->size_request = e_clipped_label_size_request; - widget_class->size_allocate = e_clipped_label_size_allocate; - widget_class->expose_event = e_clipped_label_expose; - - object_class->destroy = e_clipped_label_destroy; - - e_clipped_label_ellipsis = _("..."); -} - - -static void -e_clipped_label_init (EClippedLabel *label) -{ - GTK_WIDGET_SET_FLAGS (label, GTK_NO_WINDOW); - - label->label = NULL; - label->label_wc = NULL; - label->chars_displayed = E_CLIPPED_LABEL_NEED_RECALC; -} - - -/** - * e_clipped_label_new: - * - * @text: The label text. - * @Returns: A new #EClippedLabel. - * - * Creates a new #EClippedLabel with the given text. - **/ -GtkWidget * -e_clipped_label_new (const gchar *text) -{ - GtkWidget *label; - - label = GTK_WIDGET (gtk_type_new (e_clipped_label_get_type ())); - - if (text && *text) - e_clipped_label_set_text (E_CLIPPED_LABEL (label), text); - - return label; -} - - -static void -e_clipped_label_size_request (GtkWidget *widget, - GtkRequisition *requisition) -{ - EClippedLabel *label; - GdkFont *font; - - g_return_if_fail (E_IS_CLIPPED_LABEL (widget)); - g_return_if_fail (requisition != NULL); - - label = E_CLIPPED_LABEL (widget); - font = widget->style->font; - - requisition->width = 0; - requisition->height = font->ascent + font->descent - + 2 * GTK_MISC (widget)->ypad; -} - - -static void -e_clipped_label_size_allocate (GtkWidget *widget, - GtkAllocation *allocation) -{ - EClippedLabel *label; - - label = E_CLIPPED_LABEL (widget); - - widget->allocation = *allocation; - - /* Flag that we need to recalculate how many characters to display. */ - label->chars_displayed = E_CLIPPED_LABEL_NEED_RECALC; -} - - -static gint -e_clipped_label_expose (GtkWidget *widget, - GdkEventExpose *event) -{ - EClippedLabel *label; - GtkMisc *misc; - gint x, y; - GdkFont *font; - gchar *tmp_str, tmp_ch; - - g_return_val_if_fail (E_IS_CLIPPED_LABEL (widget), FALSE); - g_return_val_if_fail (event != NULL, FALSE); - - label = E_CLIPPED_LABEL (widget); - misc = GTK_MISC (widget); - font = widget->style->font; - - /* If the label isn't visible or has no text, just return. */ - if (!GTK_WIDGET_VISIBLE (widget) || !GTK_WIDGET_MAPPED (widget) - || !label->label || (*label->label == '\0')) - return TRUE; - - /* Recalculate the number of characters displayed, if necessary. */ - if (label->chars_displayed == E_CLIPPED_LABEL_NEED_RECALC) - e_clipped_label_recalc_chars_displayed (label); - - /* - * GC Clipping - */ - gdk_gc_set_clip_rectangle (widget->style->white_gc, - &event->area); - gdk_gc_set_clip_rectangle (widget->style->fg_gc[widget->state], - &event->area); - - y = floor (widget->allocation.y + (gint)misc->ypad - + (((gint)widget->allocation.height - 2 * (gint)misc->ypad - - (gint)font->ascent - font->descent) - * misc->yalign) + 0.5) + font->ascent; - - if (label->chars_displayed == E_CLIPPED_LABEL_SHOW_ENTIRE_LABEL) { - x = floor (widget->allocation.x + (gint)misc->xpad - + (((gint)widget->allocation.width - - (gint)label->label_width - 2 * (gint)misc->xpad) - * misc->xalign) + 0.5); - - gtk_paint_string (widget->style, widget->window, widget->state, - &event->area, widget, "label", - x, y, label->label); - } else { - x = widget->allocation.x + (gint)misc->xpad; - - tmp_ch = label->label_wc[label->chars_displayed]; - label->label_wc[label->chars_displayed] = '\0'; - tmp_str = gdk_wcstombs (label->label_wc); - if (tmp_str) { - gtk_paint_string (widget->style, widget->window, - widget->state, &event->area, - widget, "label", - x, y, tmp_str); - g_free (tmp_str); - } - label->label_wc[label->chars_displayed] = tmp_ch; - - x = widget->allocation.x + (gint)misc->xpad - + label->ellipsis_x; - gtk_paint_string (widget->style, widget->window, widget->state, - &event->area, widget, "label", - x, y, e_clipped_label_ellipsis); - } - - gdk_gc_set_clip_mask (widget->style->white_gc, NULL); - gdk_gc_set_clip_mask (widget->style->fg_gc[widget->state], NULL); - - return TRUE; -} - - -static void -e_clipped_label_destroy (GtkObject *object) -{ - EClippedLabel *label; - - g_return_if_fail (E_IS_CLIPPED_LABEL (object)); - - label = E_CLIPPED_LABEL(object); - - g_free (label->label); - g_free (label->label_wc); -} - - -/** - * e_clipped_label_get_text: - * - * @label: An #EClippedLabel. - * @Return: The label text. - * - * Returns the label text, or NULL. - **/ -gchar* -e_clipped_label_get_text (EClippedLabel *label) -{ - g_return_val_if_fail (E_IS_CLIPPED_LABEL (label), NULL); - - return label->label; -} - - -/** - * e_clipped_label_set_text: - * - * @label: An #EClippedLabel. - * @text: The new label text. - * - * Sets the label text. - **/ -void -e_clipped_label_set_text (EClippedLabel *label, - const gchar *text) -{ - gint len; - - g_return_if_fail (E_IS_CLIPPED_LABEL (label)); - - if (label->label != text || !label->label || !text - || strcmp (label->label, text)) { - g_free (label->label); - g_free (label->label_wc); - label->label = NULL; - label->label_wc = NULL; - - if (text) { - label->label = g_strdup (text); - len = strlen (text); - label->label_wc = g_new (GdkWChar, len + 1); - label->wc_len = gdk_mbstowcs (label->label_wc, - label->label, len + 1); - label->label_wc[label->wc_len] = '\0'; - } - - /* Reset the number of characters displayed, so it is - recalculated when needed. */ - label->chars_displayed = E_CLIPPED_LABEL_NEED_RECALC; - - /* We don't queue a resize, since the label should not affect - the widget size, but we queue a draw. */ - gtk_widget_queue_draw (GTK_WIDGET (label)); - } -} - - -static void -e_clipped_label_recalc_chars_displayed (EClippedLabel *label) -{ - GdkFont *font; - gint max_width, width, ch, last_width; - - font = GTK_WIDGET (label)->style->font; - - max_width = GTK_WIDGET (label)->allocation.width - - 2 * GTK_MISC (label)->xpad; - - if (!label->label) { - label->chars_displayed = 0; - return; - } - - /* See if the entire label fits in the allocated width. */ - label->label_width = gdk_string_width (font, label->label); - if (label->label_width <= max_width) { - label->chars_displayed = E_CLIPPED_LABEL_SHOW_ENTIRE_LABEL; - return; - } - - /* Calculate the width of the ellipsis string. */ - max_width -= gdk_string_measure (font, e_clipped_label_ellipsis); - - if (max_width <= 0) { - label->chars_displayed = 0; - label->ellipsis_x = 0; - return; - } - - /* Step through the wide-char label, adding on the widths of the - characters, until we can't fit any more in. */ - width = last_width = 0; - for (ch = 0; ch < label->wc_len; ch++) { - width += gdk_char_width_wc (font, label->label_wc[ch]); - - if (width > max_width) { - label->chars_displayed = ch; - label->ellipsis_x = last_width; - return; - } - - last_width = width; - } - - g_warning ("Clipped label width not exceeded as expected"); - label->chars_displayed = E_CLIPPED_LABEL_SHOW_ENTIRE_LABEL; -} - |