diff options
Diffstat (limited to 'src/gs-review-histogram.c')
| -rw-r--r-- | src/gs-review-histogram.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/gs-review-histogram.c b/src/gs-review-histogram.c new file mode 100644 index 0000000..0b74034 --- /dev/null +++ b/src/gs-review-histogram.c @@ -0,0 +1,135 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- + * vi:set noexpandtab tabstop=8 shiftwidth=8: + * + * Copyright (C) 2016 Canonical Ltd. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include "config.h" + +#include <math.h> + +#include "gs-common.h" +#include "gs-review-histogram.h" +#include "gs-review-bar.h" +#include "gs-star-image.h" + +typedef struct +{ + GtkWidget *bar1; + GtkWidget *bar2; + GtkWidget *bar3; + GtkWidget *bar4; + GtkWidget *bar5; + GtkWidget *label_value; + GtkWidget *label_total; + GtkWidget *star_value_1; + GtkWidget *star_value_2; + GtkWidget *star_value_3; + GtkWidget *star_value_4; + GtkWidget *star_value_5; +} GsReviewHistogramPrivate; + +G_DEFINE_TYPE_WITH_PRIVATE (GsReviewHistogram, gs_review_histogram, GTK_TYPE_WIDGET) + +void +gs_review_histogram_set_ratings (GsReviewHistogram *histogram, + gint rating_percent, + GArray *review_ratings) +{ + GsReviewHistogramPrivate *priv = gs_review_histogram_get_instance_private (histogram); + g_autofree gchar *text = NULL; + gdouble fraction[6] = { 0.0f }; + guint32 max = 0; + guint32 total = 0; + + g_return_if_fail (GS_IS_REVIEW_HISTOGRAM (histogram)); + + /* sanity check */ + if (review_ratings->len != 6) { + g_warning ("ratings data incorrect expected 012345"); + return; + } + + /* idx 0 is '0 stars' which we don't support in the UI */ + for (guint i = 1; i < review_ratings->len; i++) { + guint32 c = g_array_index (review_ratings, guint32, i); + max = MAX (c, max); + } + for (guint i = 1; i < review_ratings->len; i++) { + guint32 c = g_array_index (review_ratings, guint32, i); + fraction[i] = max > 0 ? (gdouble) c / (gdouble) max : 0.f; + total += c; + } + + gs_review_bar_set_fraction (GS_REVIEW_BAR (priv->bar5), fraction[5]); + gs_review_bar_set_fraction (GS_REVIEW_BAR (priv->bar4), fraction[4]); + gs_review_bar_set_fraction (GS_REVIEW_BAR (priv->bar3), fraction[3]); + gs_review_bar_set_fraction (GS_REVIEW_BAR (priv->bar2), fraction[2]); + gs_review_bar_set_fraction (GS_REVIEW_BAR (priv->bar1), fraction[1]); + + text = g_strdup_printf (g_dngettext (GETTEXT_PACKAGE, "%u review total", "%u reviews total", total), total); + gtk_label_set_text (GTK_LABEL (priv->label_total), text); + + g_clear_pointer (&text, g_free); + + /* Round explicitly, to avoid rounding inside the printf() call and to use + the same value also for the stars fraction. */ + fraction[0] = total > 0 ? round (((gdouble) rating_percent ) * 50.0 / 100.0) / 10.0 : 0.0; + text = g_strdup_printf ("%.01f", fraction[0]); + gtk_label_set_text (GTK_LABEL (priv->label_value), text); + + gs_star_image_set_fraction (GS_STAR_IMAGE (priv->star_value_1), CLAMP (fraction[0], 0.0, 1.0)); + gs_star_image_set_fraction (GS_STAR_IMAGE (priv->star_value_2), CLAMP (fraction[0], 1.0, 2.0) - 1.0); + gs_star_image_set_fraction (GS_STAR_IMAGE (priv->star_value_3), CLAMP (fraction[0], 2.0, 3.0) - 2.0); + gs_star_image_set_fraction (GS_STAR_IMAGE (priv->star_value_4), CLAMP (fraction[0], 3.0, 4.0) - 3.0); + gs_star_image_set_fraction (GS_STAR_IMAGE (priv->star_value_5), CLAMP (fraction[0], 4.0, 5.0) - 4.0); +} + +static void +gs_review_histogram_dispose (GObject *object) +{ + gs_widget_remove_all (GTK_WIDGET (object), NULL); + + G_OBJECT_CLASS (gs_review_histogram_parent_class)->dispose (object); +} + +static void +gs_review_histogram_init (GsReviewHistogram *histogram) +{ + gtk_widget_init_template (GTK_WIDGET (histogram)); +} + +static void +gs_review_histogram_class_init (GsReviewHistogramClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); + + object_class->dispose = gs_review_histogram_dispose; + + gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/Software/gs-review-histogram.ui"); + gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT); + + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, bar5); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, bar4); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, bar3); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, bar2); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, bar1); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, label_value); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, label_total); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, star_value_1); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, star_value_2); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, star_value_3); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, star_value_4); + gtk_widget_class_bind_template_child_private (widget_class, GsReviewHistogram, star_value_5); +} + +GtkWidget * +gs_review_histogram_new (void) +{ + GsReviewHistogram *histogram; + histogram = g_object_new (GS_TYPE_REVIEW_HISTOGRAM, NULL); + return GTK_WIDGET (histogram); +} |