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gtk-demo: Create new textbuffers for new source/info texts

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This is so we can prepare these buffers without them being set on the
widgets yet and only gtk_text_view_set_buffer() them afterwards. And
this in turn gets rid of all the a11y events we were needlessly
emitting.

https://bugzilla.gnome.org/show_bug.cgi?id=694406
This commit is contained in:
Benjamin Otte
2013-02-26 15:55:29 +01:00
parent 399ffbb230
commit 46ef9a83bb
1 changed files with 49 additions and 48 deletions
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97
demos/gtk-demo/main.c
View File

@ -9,8 +9,8 @@
#include "demos.h"
static GtkTextBuffer *info_buffer;
static GtkTextBuffer *source_buffer;
static GtkWidget *info_view;
static GtkWidget *source_view;
static gchar *current_file = NULL;
@ -353,7 +353,7 @@ parse_chars (gchar *text,
/* While not as cool as c-mode, this will do as a quick attempt at highlighting */
static void
fontify (void)
fontify (GtkTextBuffer *source_buffer)
{
GtkTextIter start_iter, next_iter, tmp_iter;
gint state;
@ -398,12 +398,11 @@ fontify (void)
}
}
static GtkWidget *create_text (GtkTextBuffer **buffer, gboolean is_source);
static GtkWidget *create_text (GtkWidget **text_view, gboolean is_source);
static void
add_data_tab (const gchar *demoname)
{
GtkTextBuffer *buffer = NULL;
gchar *resource_dir, *resource_name, *content_type;
gchar **resources;
GBytes *bytes;
@ -440,8 +439,13 @@ add_data_tab (const gchar *demoname)
}
else if (g_content_type_is_a (content_type, "text/plain"))
{
widget = create_text (&buffer, FALSE);
GtkTextBuffer *buffer;
GtkWidget *textview;
widget = create_text (&textview, FALSE);
buffer = gtk_text_buffer_new (NULL);
gtk_text_buffer_set_text (buffer, g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes));
gtk_text_view_set_buffer (GTK_TEXT_VIEW (textview), buffer);
}
else
{
@ -476,6 +480,7 @@ void
load_file (const gchar *demoname,
const gchar *filename)
{
GtkTextBuffer *info_buffer, *source_buffer;
GtkTextIter start, end;
char *resource_filename;
GError *err = NULL;
@ -495,11 +500,34 @@ load_file (const gchar *demoname,
g_free (current_file);
current_file = g_strdup (filename);
gtk_text_buffer_get_bounds (info_buffer, &start, &end);
gtk_text_buffer_delete (info_buffer, &start, &end);
info_buffer = gtk_text_buffer_new (NULL);
gtk_text_buffer_create_tag (info_buffer, "title",
"font", "Sans 18",
"pixels-below-lines", 10,
NULL);
gtk_text_buffer_get_bounds (source_buffer, &start, &end);
gtk_text_buffer_delete (source_buffer, &start, &end);
source_buffer = gtk_text_buffer_new (NULL);
gtk_text_buffer_create_tag (source_buffer, "comment",
"foreground", "DodgerBlue",
NULL);
gtk_text_buffer_create_tag (source_buffer, "type",
"foreground", "ForestGreen",
NULL);
gtk_text_buffer_create_tag (source_buffer, "string",
"foreground", "RosyBrown",
"weight", PANGO_WEIGHT_BOLD,
NULL);
gtk_text_buffer_create_tag (source_buffer, "control",
"foreground", "purple",
NULL);
gtk_text_buffer_create_tag (source_buffer, "preprocessor",
"style", PANGO_STYLE_OBLIQUE,
"foreground", "burlywood4",
NULL);
gtk_text_buffer_create_tag (source_buffer, "function",
"weight", PANGO_WEIGHT_BOLD,
"foreground", "DarkGoldenrod4",
NULL);
resource_filename = g_strconcat ("/sources/", filename, NULL);
bytes = g_resources_lookup_data (resource_filename, 0, &err);
@ -629,9 +657,14 @@ load_file (const gchar *demoname,
}
}
fontify ();
fontify (source_buffer);
g_strfreev (lines);
gtk_text_view_set_buffer (GTK_TEXT_VIEW (info_view), info_buffer);
g_object_unref (info_buffer);
gtk_text_view_set_buffer (GTK_TEXT_VIEW (source_view), source_buffer);
g_object_unref (source_buffer);
}
void
@ -699,8 +732,8 @@ selection_cb (GtkTreeSelection *selection,
}
static GtkWidget *
create_text (GtkTextBuffer **buffer,
gboolean is_source)
create_text (GtkWidget **view,
gboolean is_source)
{
GtkWidget *scrolled_window;
GtkWidget *text_view;
@ -713,11 +746,9 @@ create_text (GtkTextBuffer **buffer,
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_SHADOW_IN);
text_view = gtk_text_view_new ();
*view = text_view = gtk_text_view_new ();
g_object_set (text_view, "margin", 20, NULL);
*buffer = gtk_text_buffer_new (NULL);
gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), *buffer);
gtk_text_view_set_editable (GTK_TEXT_VIEW (text_view), FALSE);
gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (text_view), FALSE);
@ -899,43 +930,13 @@ main (int argc, char **argv)
gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
create_text (&info_buffer, FALSE),
create_text (&info_view, FALSE),
gtk_label_new_with_mnemonic ("_Info"));
gtk_text_buffer_create_tag (info_buffer, "title",
"font", "Sans 18",
"pixels-below-lines", 10,
NULL);
g_object_unref (info_buffer);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
create_text (&source_buffer, TRUE),
create_text (&source_view, TRUE),
gtk_label_new_with_mnemonic ("_Source"));
gtk_text_buffer_create_tag (source_buffer, "comment",
"foreground", "DodgerBlue",
NULL);
gtk_text_buffer_create_tag (source_buffer, "type",
"foreground", "ForestGreen",
NULL);
gtk_text_buffer_create_tag (source_buffer, "string",
"foreground", "RosyBrown",
"weight", PANGO_WEIGHT_BOLD,
NULL);
gtk_text_buffer_create_tag (source_buffer, "control",
"foreground", "purple",
NULL);
gtk_text_buffer_create_tag (source_buffer, "preprocessor",
"style", PANGO_STYLE_OBLIQUE,
"foreground", "burlywood4",
NULL);
gtk_text_buffer_create_tag (source_buffer, "function",
"weight", PANGO_WEIGHT_BOLD,
"foreground", "DarkGoldenrod4",
NULL);
g_object_unref (source_buffer);
gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
gtk_widget_show_all (window);