aboutsummaryrefslogtreecommitdiffstats
path: root/widgets/misc/e-clipped-label.c
diff options
context:
space:
mode:
Diffstat (limited to 'widgets/misc/e-clipped-label.c')
-rw-r--r--widgets/misc/e-clipped-label.c423
1 files changed, 0 insertions, 423 deletions
diff --git a/widgets/misc/e-clipped-label.c b/widgets/misc/e-clipped-label.c
deleted file mode 100644
index 820398e891..0000000000
--- a/widgets/misc/e-clipped-label.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-
-/*
- * Author :
- * Damon Chaplin <damon@ximian.com>
- *
- * Copyright 1999, Ximian, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include "e-clipped-label.h"
-
-#include <math.h>
-#include <string.h>
-
-#include <glib.h>
-#include <gdk/gdki18n.h>
-#include <libgnome/gnome-i18n.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_finalize (GObject *object);
-
-static void build_layout (EClippedLabel *label, const char *text);
-
-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 = g_type_class_ref(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)
-{
- GObjectClass *object_class;
- GtkWidgetClass *widget_class;
-
- object_class = (GObjectClass *) 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->finalize = e_clipped_label_finalize;
-
- e_clipped_label_ellipsis = _("...");
-}
-
-
-static void
-e_clipped_label_init (EClippedLabel *label)
-{
- GTK_WIDGET_SET_FLAGS (label, GTK_NO_WINDOW);
-
- label->label = 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,
- PangoWeight font_weight,
- gfloat font_size)
-{
- GtkWidget *label;
- EClippedLabel *clipped;
-
- label = GTK_WIDGET (gtk_type_new (e_clipped_label_get_type ()));
-
- clipped = E_CLIPPED_LABEL (label);
-
- clipped->font_size = font_size;
- clipped->font_weight = font_weight;
- clipped->layout = NULL;
-
- build_layout (clipped, e_clipped_label_ellipsis);
- pango_layout_get_pixel_size (clipped->layout, &clipped->ellipsis_width, NULL);
-
- if (text && *text)
- e_clipped_label_set_text (clipped, text);
-
- return label;
-}
-
-static void
-build_layout (EClippedLabel *label, const char *text)
-{
- if (!label->layout) {
- GtkStyle *style = gtk_widget_get_style (GTK_WIDGET (label));
- PangoFontDescription *desc = pango_font_description_copy (style->font_desc);
-
- label->layout = gtk_widget_create_pango_layout (GTK_WIDGET (label), text);
-
- pango_font_description_set_size (desc, pango_font_description_get_size (desc) * label->font_size);
-
- pango_font_description_set_weight (desc, label->font_weight);
- pango_layout_set_font_description (label->layout, desc);
- pango_font_description_free (desc);
- }
-
- pango_layout_set_text (label->layout, text, -1);
-}
-
-static void
-e_clipped_label_size_request (GtkWidget *widget,
- GtkRequisition *requisition)
-{
- EClippedLabel *label;
- int height;
- int width;
-
- g_return_if_fail (E_IS_CLIPPED_LABEL (widget));
- g_return_if_fail (requisition != NULL);
-
- label = E_CLIPPED_LABEL (widget);
-
- pango_layout_get_pixel_size (label->layout, &width, &height);
-
- requisition->width = 0;
- requisition->height = height + 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;
- PangoRectangle rect;
-
- 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);
-
- /* 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);
-
- pango_layout_get_pixel_extents (label->layout, &rect, NULL);
-
- 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);
-
- gdk_draw_layout (widget->window, widget->style->fg_gc[widget->state],
- x, label->label_y, label->layout);
- } else {
- int layout_width;
-
- x = widget->allocation.x + (gint)misc->xpad;
-
- /* trim the layout to the number of characters we're displaying */
- pango_layout_set_text (label->layout, label->label, label->chars_displayed);
-
- /* draw it */
- gdk_draw_layout (widget->window, widget->style->fg_gc[widget->state],
- x, label->label_y, label->layout);
-
- pango_layout_get_pixel_size (label->layout, &layout_width, NULL);
-
- /* offset the X position for the ellipsis */
- x = widget->allocation.x + (gint)misc->xpad
- + label->ellipsis_x;
-
- /* then draw the ellipsis */
- pango_layout_set_text (label->layout, e_clipped_label_ellipsis, strlen (e_clipped_label_ellipsis));
-
- gdk_draw_layout (widget->window, widget->style->fg_gc[widget->state],
- x, label->label_y, label->layout);
-
- /* then reset the layout to our original label text */
- pango_layout_set_text (label->layout, label->label, -1);
- }
-
- 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_finalize (GObject *object)
-{
- EClippedLabel *label;
-
- g_return_if_fail (E_IS_CLIPPED_LABEL (object));
-
- label = E_CLIPPED_LABEL(object);
-
- g_free (label->label);
-
- g_object_unref (label->layout);
-
- (* G_OBJECT_CLASS (parent_class)->finalize) (object);
-}
-
-
-/**
- * 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)
-{
- g_return_if_fail (E_IS_CLIPPED_LABEL (label));
-
- if (label->label != text || !label->label || !text
- || strcmp (label->label, text)) {
- g_free (label->label);
- label->label = NULL;
-
- if (text)
- label->label = g_strdup (text);
-
- build_layout (label, text);
-
- /* 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)
-{
- gint max_width, width;
- GSList *lines;
- PangoLayoutLine *line;
- int index;
- PangoRectangle rect;
- GtkWidget *widget = GTK_WIDGET (label);
- GtkMisc *misc = GTK_MISC (label);
-
- 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. */
- pango_layout_set_text (label->layout, label->label, -1);
-
- pango_layout_get_pixel_extents (label->layout, &rect, NULL);
-
- label->label_y = floor (widget->allocation.y + (gint)misc->ypad
- + (((gint)widget->allocation.height - 2 * (gint)misc->ypad
- + (gint)PANGO_ASCENT (rect) - PANGO_DESCENT(rect))
- * misc->yalign) + 0.5);
-
- pango_layout_get_pixel_size (label->layout, &label->label_width, NULL);
- if (label->label_width <= max_width) {
- label->chars_displayed = E_CLIPPED_LABEL_SHOW_ENTIRE_LABEL;
- return;
- }
-
- if (max_width <= 0) {
- label->chars_displayed = 0;
- label->ellipsis_x = 0;
- return;
- }
-
- max_width -= label->ellipsis_width;
-
- lines = pango_layout_get_lines (label->layout);
- line = lines->data;
-
- if (!pango_layout_line_x_to_index (line,
- max_width * PANGO_SCALE,
- &index,
- NULL)) {
- g_warning ("pango_layout_line_x_to_index returned false");
- return;
- }
-
-#if 0
- g_slist_foreach (lines, (GFunc)pango_layout_line_unref, NULL);
- g_slist_free (lines);
-#endif
-
- label->chars_displayed = index;
-
- pango_layout_set_text (label->layout, label->label, label->chars_displayed);
- pango_layout_get_pixel_size (label->layout, &width, NULL);
-
- label->ellipsis_x = width;
-}