diff options
Diffstat (limited to 'src/ido-detail-label.c')
| -rw-r--r-- | src/ido-detail-label.c | 401 |
1 files changed, 0 insertions, 401 deletions
diff --git a/src/ido-detail-label.c b/src/ido-detail-label.c deleted file mode 100644 index 8b7ef90..0000000 --- a/src/ido-detail-label.c +++ /dev/null @@ -1,401 +0,0 @@ -/* - * Copyright 2012 Canonical Ltd. - * - * This program is free software: you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 3, 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 warranties of - * MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>. - * - * Authors: - * Lars Uebernickel <lars.uebernickel@canonical.com> - */ - -#include "ido-detail-label.h" - -#include <math.h> - -G_DEFINE_TYPE (IdoDetailLabel, ido_detail_label, GTK_TYPE_WIDGET) - -struct _IdoDetailLabelPrivate -{ - gchar *text; - PangoLayout *layout; - gboolean draw_lozenge; -}; - -enum -{ - PROP_0, - PROP_TEXT, - NUM_PROPERTIES -}; - -static GParamSpec *properties[NUM_PROPERTIES]; - -static void -ido_detail_label_get_property (GObject *object, - guint property_id, - GValue *value, - GParamSpec *pspec) -{ - IdoDetailLabel *self = IDO_DETAIL_LABEL (object); - - switch (property_id) - { - case PROP_TEXT: - g_value_set_string (value, self->priv->text); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); - } -} - -static void -ido_detail_label_set_property (GObject *object, - guint property_id, - const GValue *value, - GParamSpec *pspec) -{ - IdoDetailLabel *self = IDO_DETAIL_LABEL (object); - - switch (property_id) - { - case PROP_TEXT: - ido_detail_label_set_text (self, g_value_get_string (value)); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); - } -} - - -static void -ido_detail_label_finalize (GObject *object) -{ - IdoDetailLabelPrivate *priv = IDO_DETAIL_LABEL (object)->priv; - - g_free (priv->text); - - G_OBJECT_CLASS (ido_detail_label_parent_class)->finalize (object); -} - -static void -ido_detail_label_dispose (GObject *object) -{ - IdoDetailLabelPrivate *priv = IDO_DETAIL_LABEL (object)->priv; - - g_clear_object (&priv->layout); - - G_OBJECT_CLASS (ido_detail_label_parent_class)->dispose (object); -} - -static void -ido_detail_label_ensure_layout (IdoDetailLabel *label) -{ - IdoDetailLabelPrivate *priv = label->priv; - - if (priv->layout == NULL) - { - priv->layout = gtk_widget_create_pango_layout (GTK_WIDGET (label), priv->text); - pango_layout_set_alignment (priv->layout, PANGO_ALIGN_CENTER); - pango_layout_set_ellipsize (priv->layout, PANGO_ELLIPSIZE_END); - pango_layout_set_height (priv->layout, -1); - - // TODO update layout on "style-updated" and "direction-changed" - } -} - -static void -cairo_lozenge (cairo_t *cr, - double x, - double y, - double w, - double h, - double radius) -{ - double x1 = x + w - radius; - double x2 = x + radius; - double y1 = y + radius; - double y2 = y + h - radius; - - cairo_move_to (cr, x + radius, y); - cairo_arc (cr, x1, y1, radius, G_PI * 1.5, G_PI * 2); - cairo_arc (cr, x1, y2, radius, 0, G_PI * 0.5); - cairo_arc (cr, x2, y2, radius, G_PI * 0.5, G_PI); - cairo_arc (cr, x2, y1, radius, G_PI, G_PI * 1.5); -} - -static PangoFontMetrics * -gtk_widget_get_font_metrics (GtkWidget *widget, - PangoContext *context) -{ - PangoFontDescription *font; - PangoFontMetrics *metrics; - - gtk_style_context_get (gtk_widget_get_style_context (widget), - gtk_widget_get_state_flags (widget), - "font", &font, NULL); - - metrics = pango_context_get_metrics (context, - font, - pango_context_get_language (context)); - - pango_font_description_free (font); - return metrics; -} - -static gint -ido_detail_label_get_minimum_text_width (IdoDetailLabel *label) -{ - IdoDetailLabelPrivate *priv = label->priv; - PangoContext *context; - PangoFontMetrics *metrics; - gint char_width; - gint w; - - context = pango_layout_get_context (priv->layout); - metrics = gtk_widget_get_font_metrics (GTK_WIDGET (label), context); - char_width = pango_font_metrics_get_approximate_digit_width (metrics); - - w = 2 * char_width / PANGO_SCALE; - pango_font_metrics_unref (metrics); - return w; -} - -static gboolean -ido_detail_label_draw (GtkWidget *widget, - cairo_t *cr) -{ - IdoDetailLabel *label = IDO_DETAIL_LABEL (widget); - IdoDetailLabelPrivate *priv = IDO_DETAIL_LABEL (widget)->priv; - PangoRectangle extents; - GtkAllocation allocation; - double x, w, h, radius; - GdkRGBA color; - - if (!priv->text || !*priv->text) - return TRUE; - - gtk_widget_get_allocation (widget, &allocation); - - ido_detail_label_ensure_layout (IDO_DETAIL_LABEL (widget)); - - pango_layout_get_extents (priv->layout, NULL, &extents); - pango_extents_to_pixels (&extents, NULL); - - h = MIN (allocation.height, extents.height); - radius = floor (h / 2.0); - w = MAX (ido_detail_label_get_minimum_text_width (label), extents.width) + 2.0 * radius; - x = allocation.width - w; - - pango_layout_set_width (priv->layout, (allocation.width - 2 * radius) * PANGO_SCALE); - pango_layout_get_extents (priv->layout, NULL, &extents); - pango_extents_to_pixels (&extents, NULL); - - gtk_style_context_get_color (gtk_widget_get_style_context (widget), - gtk_widget_get_state_flags (widget), - &color); - gdk_cairo_set_source_rgba (cr, &color); - - cairo_set_line_width (cr, 1.0); - cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); - - if (priv->draw_lozenge) - cairo_lozenge (cr, x, 0.0, w, h, radius); - - cairo_move_to (cr, x + radius, (allocation.height - extents.height) / 2.0); - pango_cairo_layout_path (cr, priv->layout); - cairo_fill (cr); - - return TRUE; -} - -static void -ido_detail_label_get_preferred_width (GtkWidget *widget, - gint *minimum, - gint *natural) -{ - IdoDetailLabelPrivate *priv = IDO_DETAIL_LABEL (widget)->priv; - PangoRectangle extents; - double radius; - - ido_detail_label_ensure_layout (IDO_DETAIL_LABEL (widget)); - - pango_layout_get_extents (priv->layout, NULL, &extents); - pango_extents_to_pixels (&extents, NULL); - - radius = floor (extents.height / 2.0); - - *minimum = ido_detail_label_get_minimum_text_width (IDO_DETAIL_LABEL (widget)) + 2.0 * radius; - *natural = MAX (*minimum, extents.width + 2.0 * radius); -} - -static void -ido_detail_label_get_preferred_height (GtkWidget *widget, - gint *minimum, - gint *natural) -{ - IdoDetailLabelPrivate *priv = IDO_DETAIL_LABEL (widget)->priv; - PangoContext *context; - PangoFontMetrics *metrics; - PangoRectangle extents; - - ido_detail_label_ensure_layout (IDO_DETAIL_LABEL (widget)); - - pango_layout_get_extents (priv->layout, NULL, &extents); - pango_extents_to_pixels (&extents, NULL); - context = pango_layout_get_context (priv->layout); - metrics = gtk_widget_get_font_metrics (widget, context); - - *minimum = *natural = (pango_font_metrics_get_ascent (metrics) + - pango_font_metrics_get_descent (metrics)) / PANGO_SCALE; - - pango_font_metrics_unref (metrics); -} - -static void -ido_detail_label_class_init (IdoDetailLabelClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); - - object_class->get_property = ido_detail_label_get_property; - object_class->set_property = ido_detail_label_set_property; - object_class->finalize = ido_detail_label_finalize; - object_class->dispose = ido_detail_label_dispose; - - widget_class->draw = ido_detail_label_draw; - widget_class->get_preferred_width = ido_detail_label_get_preferred_width; - widget_class->get_preferred_height = ido_detail_label_get_preferred_height; - - g_type_class_add_private (klass, sizeof (IdoDetailLabelPrivate)); - - properties[PROP_TEXT] = g_param_spec_string ("text", - "Text", - "The text of the label", - NULL, - G_PARAM_READWRITE | - G_PARAM_STATIC_STRINGS); - - g_object_class_install_properties (object_class, NUM_PROPERTIES, properties); -} - -static void -ido_detail_label_init (IdoDetailLabel *self) -{ - self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, - IDO_TYPE_DETAIL_LABEL, - IdoDetailLabelPrivate); - - gtk_widget_set_has_window (GTK_WIDGET (self), FALSE); -} - -GtkWidget * -ido_detail_label_new (const gchar *label) -{ - return g_object_new (IDO_TYPE_DETAIL_LABEL, - "text", label, - NULL); -} - -const gchar * -ido_detail_label_get_text (IdoDetailLabel *label) -{ - g_return_val_if_fail (IDO_IS_DETAIL_LABEL (label), NULL); - return label->priv->text; -} - -/* collapse_whitespace: - * @str: the source string - * - * Collapses all occurences of consecutive whitespace charactes in @str - * into a single space. - * - * Returns: (transfer full): a newly-allocated string - */ -static gchar * -collapse_whitespace (const gchar *str) -{ - GString *result; - gboolean in_space = FALSE; - - if (str == NULL) - return NULL; - - result = g_string_new (""); - - while (*str) - { - gunichar c = g_utf8_get_char_validated (str, -1); - - if (c < 0) - break; - - if (!g_unichar_isspace (c)) - { - g_string_append_unichar (result, c); - in_space = FALSE; - } - else if (!in_space) - { - g_string_append_c (result, ' '); - in_space = TRUE; - } - - str = g_utf8_next_char (str); - } - - return g_string_free (result, FALSE); -} - -static void -ido_detail_label_set_text_impl (IdoDetailLabel *label, - const gchar *text, - gboolean draw_lozenge) -{ - IdoDetailLabelPrivate * priv = label->priv; - - g_clear_object (&priv->layout); - g_free (priv->text); - - priv->text = g_strdup (text); - priv->draw_lozenge = draw_lozenge; - - g_object_notify_by_pspec (G_OBJECT (label), properties[PROP_TEXT]); - gtk_widget_queue_resize (GTK_WIDGET (label)); -} - -void -ido_detail_label_set_text (IdoDetailLabel *label, - const gchar *text) -{ - gchar *str; - - g_return_if_fail (IDO_IS_DETAIL_LABEL (label)); - - str = collapse_whitespace (text); - ido_detail_label_set_text_impl (label, str, FALSE); - g_free (str); -} - -void -ido_detail_label_set_count (IdoDetailLabel *label, - gint count) -{ - gchar *text; - - g_return_if_fail (IDO_IS_DETAIL_LABEL (label)); - - text = g_strdup_printf ("%d", count); - ido_detail_label_set_text_impl (label, text, TRUE); - g_free (text); -} |