GNOME.org
 

[gtk/matthiasc/for-master: 4/4] gtk-demo: Add a column view demo


commit ad1f778c3a4d8b83904563f4486a0f749f7f4f14
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Oct 4 21:21:44 2020 -0400

    gtk-demo: Add a column view demo
    
    Make a column view that is showing some Unicode data.

 demos/gtk-demo/demo.gresource.xml |   1 +
 demos/gtk-demo/listview_ucd.c     | 479 ++++++++++++++++++++++++++++++++++++++
 demos/gtk-demo/meson.build        |   1 +
 3 files changed, 481 insertions(+)
---
diff --git a/demos/gtk-demo/demo.gresource.xml b/demos/gtk-demo/demo.gresource.xml
index 5dea806cd2..bf512a4992 100644
--- a/demos/gtk-demo/demo.gresource.xml
+++ b/demos/gtk-demo/demo.gresource.xml
@@ -281,6 +281,7 @@
     <file>listview_filebrowser.c</file>
     <file>listview_minesweeper.c</file>
     <file>listview_settings.c</file>
+    <file>listview_ucd.c</file>
     <file>listview_weather.c</file>
     <file>listview_words.c</file>
     <file>list_store.c</file>
diff --git a/demos/gtk-demo/listview_ucd.c b/demos/gtk-demo/listview_ucd.c
new file mode 100644
index 0000000000..1971f5586b
--- /dev/null
+++ b/demos/gtk-demo/listview_ucd.c
@@ -0,0 +1,479 @@
+/* Lists/Characters
+ *
+ * This demo shows a multi-column representation of some parts
+ * of the Unicode Character Database, or UCD.
+ */
+
+#include <gtk/gtk.h>
+#include "script-names.h"
+
+
+#define UCD_TYPE_ITEM (ucd_item_get_type ())
+G_DECLARE_FINAL_TYPE (UcdItem, ucd_item, UCD, ITEM, GObject)
+
+struct _UcdItem
+{
+  GObject parent_instance;
+  gunichar codepoint;
+};
+
+struct _UcdItemClass
+{
+  GObjectClass parent_class;
+};
+
+G_DEFINE_TYPE (UcdItem, ucd_item, G_TYPE_OBJECT)
+
+static void
+ucd_item_init (UcdItem *item)
+{
+}
+
+static void
+ucd_item_class_init (UcdItemClass *class)
+{
+}
+
+static UcdItem *
+ucd_item_new (gunichar codepoint)
+{
+  UcdItem *item;
+
+  item = g_object_new (UCD_TYPE_ITEM, NULL);
+
+  item->codepoint = codepoint;
+
+  return item;
+}
+
+static gunichar
+ucd_item_get_codepoint (UcdItem *item)
+{
+  return item->codepoint;
+}
+
+static GListModel *
+ucd_model_new (void)
+{
+  GListStore *store;
+  int i;
+
+  store = g_list_store_new (G_TYPE_OBJECT);
+  for (i = 1; i < 0x1ffff; i++)
+    {
+      UcdItem *item = ucd_item_new (i);
+      g_list_store_append (store, item);
+      g_object_unref (item);
+    }
+
+  return G_LIST_MODEL (store);
+}
+
+static void
+setup_centered_label (GtkSignalListItemFactory *factory,
+                      GObject                  *listitem)
+{
+  GtkWidget *label;
+  label = gtk_label_new ("");
+  gtk_list_item_set_child (GTK_LIST_ITEM (listitem), label);
+}
+
+static void
+setup_label (GtkSignalListItemFactory *factory,
+             GObject                  *listitem)
+{
+  GtkWidget *label;
+  label = gtk_label_new ("");
+  gtk_label_set_xalign (GTK_LABEL (label), 0);
+  gtk_list_item_set_child (GTK_LIST_ITEM (listitem), label);
+}
+
+static void
+bind_codepoint (GtkSignalListItemFactory *factory,
+                GObject                  *listitem)
+{
+  GtkWidget *label;
+  GObject *item;
+  gunichar codepoint;
+  char buffer[16] = { 0, };
+
+  label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
+  item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
+  codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
+
+  g_snprintf (buffer, 10, "%#06x", codepoint);
+  gtk_label_set_label (GTK_LABEL (label), buffer);
+}
+
+static void
+bind_char (GtkSignalListItemFactory *factory,
+           GObject                  *listitem)
+{
+  GtkWidget *label;
+  GObject *item;
+  gunichar codepoint;
+  char buffer[16] = { 0, };
+
+  label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
+  item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
+  codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
+
+  if (g_unichar_isprint (codepoint))
+    g_unichar_to_utf8 (codepoint, buffer);
+
+  gtk_label_set_label (GTK_LABEL (label), buffer);
+}
+
+static void
+bind_mirror (GtkSignalListItemFactory *factory,
+             GObject                  *listitem)
+{
+  GtkWidget *label;
+  GObject *item;
+  gunichar codepoint, mirror;
+  char buffer[16] = { 0, };
+
+  label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
+  item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
+  codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
+
+  if (g_unichar_get_mirror_char (codepoint, &mirror))
+    g_unichar_to_utf8 (mirror, buffer);
+
+  gtk_label_set_label (GTK_LABEL (label), buffer);
+}
+
+static void
+bind_type (GtkSignalListItemFactory *factory,
+           GObject                  *listitem)
+{
+  GtkWidget *label;
+  GObject *item;
+  gunichar codepoint;
+  const char *types[] = {
+    "Other, Control",
+    "Other, Format",
+    "Other, Not Assigned",
+    "Other, Private Use",
+    "Letter, Lowercase",
+    "Letter, Modifier",
+    "Letter, Other",
+    "Letter, Titlecase",
+    "Letter, Uppercase",
+    "Mark, Spacing",
+    "Mark, Enclosing",
+    "Mark, Nonspacing",
+    "Number, Decimal Digit",
+    "Number, Letter",
+    "Number, Other",
+    "Punctuation, Connector",
+    "Punctuation, Dash",
+    "Punctuation, Close",
+    "Punctuation, Final quote",
+    "Punctuation, Initial quote",
+    "Punctuation, Other",
+    "Punctuation, Open",
+    "Symbol, Currency",
+    "Symbol, Modifier",
+    "Symbol, Math",
+    "Symbol, Other",
+    "Separator, Line",
+    "Separator, Paragraph",
+    "Separator, Space",
+  };
+
+  label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
+  item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
+  codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
+
+  gtk_label_set_label (GTK_LABEL (label), types[g_unichar_type (codepoint)]);
+}
+
+static void
+bind_break_type (GtkSignalListItemFactory *factory,
+                 GObject                  *listitem)
+{
+  GtkWidget *label;
+  GObject *item;
+  gunichar codepoint;
+  const char *break_types[] = {
+    "Mandatory Break",
+    "Carriage Return",
+    "Line Feed",
+    "Attached Characters and Combining Marks",
+    "Surrogates",
+    "Zero Width Space",
+    "Inseparable",
+    "Non-breaking (\"Glue\")",
+    "Contingent Break Opportunity",
+    "Space",
+    "Break Opportunity After",
+    "Break Opportunity Before",
+    "Break Opportunity Before and After",
+    "Hyphen",
+    "Nonstarter",
+    "Opening Punctuation",
+    "Closing Punctuation",
+    "Ambiguous Quotation",
+    "Exclamation/Interrogation",
+    "Ideographic",
+    "Numeric",
+    "Infix Separator (Numeric)",
+    "Symbols Allowing Break After",
+    "Ordinary Alphabetic and Symbol Characters",
+    "Prefix (Numeric)",
+    "Postfix (Numeric)",
+    "Complex Content Dependent (South East Asian)",
+    "Ambiguous (Alphabetic or Ideographic)",
+    "Unknown",
+    "Next Line",
+    "Word Joiner",
+    "Hangul L Jamo",
+    "Hangul V Jamo",
+    "Hangul T Jamo",
+    "Hangul LV Syllable",
+    "Hangul LVT Syllable",
+    "Closing Parenthesis",
+    "Conditional Japanese Starter",
+    "Hebrew Letter",
+    "Regional Indicator",
+    "Emoji Base",
+    "Emoji Modifier",
+    "Zero Width Joiner",
+  };
+
+  label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
+  item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
+  codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
+
+  gtk_label_set_label (GTK_LABEL (label), break_types[g_unichar_break_type (codepoint)]);
+}
+
+static void
+bind_combining_class (GtkSignalListItemFactory *factory,
+                      GObject                  *listitem)
+{
+  GtkWidget *label;
+  GObject *item;
+  gunichar codepoint;
+  const char *classes[255] = { 0, };
+
+  classes[0] = "Not Reordered";
+  classes[1] = "Overlay";
+  classes[7] = "Nukta";
+  classes[8] = "Kana Voicing";
+  classes[9] = "Virama";
+  classes[10] = "CCC10 (Hebrew)";
+  classes[11] = "CCC11 (Hebrew)";
+  classes[12] = "CCC12 (Hebrew)";
+  classes[13] = "CCC13 (Hebrew)";
+  classes[14] = "CCC14 (Hebrew)";
+  classes[15] = "CCC15 (Hebrew)";
+  classes[16] = "CCC16 (Hebrew)";
+  classes[17] = "CCC17 (Hebrew)";
+  classes[18] = "CCC18 (Hebrew)";
+  classes[19] = "CCC19 (Hebrew)";
+  classes[20] = "CCC20 (Hebrew)";
+  classes[21] = "CCC21 (Hebrew)";
+  classes[22] = "CCC22 (Hebrew)";
+  classes[23] = "CCC23 (Hebrew)";
+  classes[24] = "CCC24 (Hebrew)";
+  classes[25] = "CCC25 (Hebrew)";
+  classes[26] = "CCC26 (Hebrew)";
+
+  classes[27] = "CCC27 (Arabic)";
+  classes[28] = "CCC28 (Arabic)";
+  classes[29] = "CCC29 (Arabic)";
+  classes[30] = "CCC30 (Arabic)";
+  classes[31] = "CCC31 (Arabic)";
+  classes[32] = "CCC32 (Arabic)";
+  classes[33] = "CCC33 (Arabic)";
+  classes[34] = "CCC34 (Arabic)";
+  classes[35] = "CCC35 (Arabic)";
+
+  classes[36] = "CCC36 (Syriac)";
+
+  classes[84] = "CCC84 (Telugu)";
+  classes[85] = "CCC85 (Telugu)";
+
+  classes[103] = "CCC103 (Thai)";
+  classes[107] = "CCC107 (Thai)";
+
+  classes[118] = "CCC118 (Lao)";
+  classes[122] = "CCC122 (Lao)";
+
+  classes[129] = "CCC129 (Tibetan)";
+  classes[130] = "CCC130 (Tibetan)";
+  classes[133] = "CCC133 (Tibetan)";
+
+  classes[200] = "Attached Below Left";
+  classes[202] = "Attached Below";
+  classes[214] = "Attached Above";
+  classes[216] = "Attached Above Right";
+  classes[218] = "Below Left";
+  classes[220] = "Below";
+  classes[222] = "Below Right";
+  classes[224] = "Left";
+  classes[226] = "Right";
+  classes[228] = "Above Left";
+  classes[230] = "Above";
+  classes[232] = "Above Right";
+  classes[233] = "Double Below";
+  classes[234] = "Double Above";
+  classes[240] = "Iota Subscript";
+  classes[255] = "Invalid";
+
+  label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
+  item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
+  codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
+
+  gtk_label_set_label (GTK_LABEL (label), classes[g_unichar_combining_class (codepoint)]);
+}
+
+static void
+bind_script (GtkSignalListItemFactory *factory,
+             GObject                  *listitem)
+{
+  GtkWidget *label;
+  GObject *item;
+  gunichar codepoint;
+  GUnicodeScript script;
+
+  label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
+  item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
+  codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
+  script = g_unichar_get_script (codepoint);
+
+  gtk_label_set_label (GTK_LABEL (label), get_script_name (script));
+}
+
+static void
+selection_changed (GObject    *object,
+                   GParamSpec *pspec,
+                   GtkWidget  *label)
+{
+  UcdItem *item;
+  guint codepoint;
+  char buffer[16] = { 0, };
+
+  item = gtk_single_selection_get_selected_item (GTK_SINGLE_SELECTION (object));
+  codepoint = ucd_item_get_codepoint (item);
+
+  if (g_unichar_isprint (codepoint))
+    g_unichar_to_utf8 (codepoint, buffer);
+
+  gtk_label_set_label (GTK_LABEL (label), buffer);
+}
+
+static GtkWidget *
+create_ucd_view (GtkWidget *label)
+{
+  GtkWidget *cv;
+  GListModel *ucd_model;
+  GtkSingleSelection *selection;
+  GtkListItemFactory *factory;
+  GtkColumnViewColumn *column;
+
+  ucd_model = ucd_model_new ();
+
+  selection = gtk_single_selection_new (ucd_model);
+  gtk_single_selection_set_autoselect (selection, TRUE);
+  gtk_single_selection_set_can_unselect (selection, FALSE);
+  g_signal_connect (selection, "notify::selected", G_CALLBACK (selection_changed), label);
+
+  cv = gtk_column_view_new (GTK_SELECTION_MODEL (selection));
+  gtk_column_view_set_show_column_separators (GTK_COLUMN_VIEW (cv), TRUE);
+
+  factory = gtk_signal_list_item_factory_new ();
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_centered_label), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_codepoint), NULL);
+  column = gtk_column_view_column_new ("Codepoint", factory);
+  gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
+
+  factory = gtk_signal_list_item_factory_new ();
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_centered_label), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_char), NULL);
+  column = gtk_column_view_column_new ("Char", factory);
+  gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
+
+  factory = gtk_signal_list_item_factory_new ();
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_centered_label), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_mirror), NULL);
+  column = gtk_column_view_column_new ("Mirror", factory);
+  gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
+
+  factory = gtk_signal_list_item_factory_new ();
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_label), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_type), NULL);
+  column = gtk_column_view_column_new ("Type", factory);
+  gtk_column_view_column_set_resizable (column, TRUE);
+  gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
+
+  factory = gtk_signal_list_item_factory_new ();
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_label), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_break_type), NULL);
+  column = gtk_column_view_column_new ("Break Type", factory);
+  gtk_column_view_column_set_resizable (column, TRUE);
+  gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
+
+  factory = gtk_signal_list_item_factory_new ();
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_label), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_combining_class), NULL);
+  column = gtk_column_view_column_new ("Combining Class", factory);
+  gtk_column_view_column_set_resizable (column, TRUE);
+  gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
+
+  factory = gtk_signal_list_item_factory_new ();
+  g_signal_connect (factory, "setup", G_CALLBACK (setup_label), NULL);
+  g_signal_connect (factory, "bind", G_CALLBACK (bind_script), NULL);
+  column = gtk_column_view_column_new ("Script", factory);
+  gtk_column_view_column_set_resizable (column, TRUE);
+  gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
+
+  return cv;
+}
+
+static GtkWidget *window;
+
+GtkWidget *
+do_listview_ucd (GtkWidget *do_widget)
+{
+  if (window == NULL)
+    {
+      GtkWidget *listview, *sw;
+      GtkWidget *box, *label;
+      GtkCssProvider *provider;
+
+      window = gtk_window_new ();
+      gtk_window_set_default_size (GTK_WINDOW (window), 800, 400);
+      gtk_window_set_title (GTK_WINDOW (window), "Characters");
+      gtk_window_set_display (GTK_WINDOW (window),
+                              gtk_widget_get_display (do_widget));
+      g_object_add_weak_pointer (G_OBJECT (window), (gpointer *) &window);
+
+      box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+      label = gtk_label_new ("");
+      gtk_label_set_width_chars (GTK_LABEL (label), 2);
+      gtk_widget_add_css_class (label, "enormous");
+      provider = gtk_css_provider_new ();
+      gtk_css_provider_load_from_data (provider, "label.enormous { font-size: 80px; }", -1);
+      gtk_style_context_add_provider (gtk_widget_get_style_context (label), GTK_STYLE_PROVIDER (provider), 
800);
+      gtk_widget_set_hexpand (label, TRUE);
+      gtk_box_append (GTK_BOX (box), label);
+
+      sw = gtk_scrolled_window_new ();
+      gtk_scrolled_window_set_propagate_natural_width (GTK_SCROLLED_WINDOW (sw), TRUE);
+      listview = create_ucd_view (label);
+      gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), listview);
+      gtk_box_prepend (GTK_BOX (box), sw);
+      gtk_window_set_child (GTK_WINDOW (window), box);
+    }
+
+  if (!gtk_widget_get_visible (window))
+    gtk_widget_show (window);
+  else
+    gtk_window_destroy (GTK_WINDOW (window));
+
+  return window;
+}
+
diff --git a/demos/gtk-demo/meson.build b/demos/gtk-demo/meson.build
index ecb08ebaac..5fb736adef 100644
--- a/demos/gtk-demo/meson.build
+++ b/demos/gtk-demo/meson.build
@@ -54,6 +54,7 @@ demos = files([
   'listview_filebrowser.c',
   'listview_minesweeper.c',
   'listview_settings.c',
+  'listview_ucd.c',
   'listview_weather.c',
   'listview_words.c',
   'markup.c',
[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]