617 lines
25 KiB
C
617 lines
25 KiB
C
/* Text Widget/Multiple Views
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*
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* The GtkTextView widget displays a GtkTextBuffer. One GtkTextBuffer
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* can be displayed by multiple GtkTextViews. This demo has two views
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* displaying a single buffer, and shows off the widget's text
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* formatting features.
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*
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*/
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#include <gtk/gtk.h>
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#include <stdlib.h> /* for exit() */
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#include "demo-common.h"
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static void easter_egg_callback (GtkWidget *button, gpointer data);
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static void
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create_tags (GtkTextBuffer *buffer)
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{
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/* Create a bunch of tags. Note that it's also possible to
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* create tags with gtk_text_tag_new() then add them to the
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* tag table for the buffer, gtk_text_buffer_create_tag() is
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* just a convenience function. Also note that you don't have
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* to give tags a name; pass NULL for the name to create an
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* anonymous tag.
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*
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* In any real app, another useful optimization would be to create
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* a GtkTextTagTable in advance, and reuse the same tag table for
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* all the buffers with the same tag set, instead of creating
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* new copies of the same tags for every buffer.
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*
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* Tags are assigned default priorities in order of addition to the
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* tag table. That is, tags created later that affect the same text
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* property affected by an earlier tag will override the earlier
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* tag. You can modify tag priorities with
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* gtk_text_tag_set_priority().
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*/
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gtk_text_buffer_create_tag (buffer, "heading",
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"weight", PANGO_WEIGHT_BOLD,
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"size", 15 * PANGO_SCALE,
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NULL);
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gtk_text_buffer_create_tag (buffer, "italic",
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"style", PANGO_STYLE_ITALIC, NULL);
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gtk_text_buffer_create_tag (buffer, "bold",
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"weight", PANGO_WEIGHT_BOLD, NULL);
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gtk_text_buffer_create_tag (buffer, "big",
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/* points times the PANGO_SCALE factor */
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"size", 20 * PANGO_SCALE, NULL);
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gtk_text_buffer_create_tag (buffer, "xx-small",
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"scale", PANGO_SCALE_XX_SMALL, NULL);
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gtk_text_buffer_create_tag (buffer, "x-large",
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"scale", PANGO_SCALE_X_LARGE, NULL);
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gtk_text_buffer_create_tag (buffer, "monospace",
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"family", "monospace", NULL);
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gtk_text_buffer_create_tag (buffer, "blue_foreground",
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"foreground", "blue", NULL);
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gtk_text_buffer_create_tag (buffer, "red_background",
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"background", "red", NULL);
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gtk_text_buffer_create_tag (buffer, "big_gap_before_line",
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"pixels_above_lines", 30, NULL);
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gtk_text_buffer_create_tag (buffer, "big_gap_after_line",
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"pixels_below_lines", 30, NULL);
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gtk_text_buffer_create_tag (buffer, "double_spaced_line",
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"pixels_inside_wrap", 10, NULL);
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gtk_text_buffer_create_tag (buffer, "not_editable",
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"editable", FALSE, NULL);
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gtk_text_buffer_create_tag (buffer, "word_wrap",
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"wrap_mode", GTK_WRAP_WORD, NULL);
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gtk_text_buffer_create_tag (buffer, "char_wrap",
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"wrap_mode", GTK_WRAP_CHAR, NULL);
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gtk_text_buffer_create_tag (buffer, "no_wrap",
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"wrap_mode", GTK_WRAP_NONE, NULL);
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gtk_text_buffer_create_tag (buffer, "center",
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"justification", GTK_JUSTIFY_CENTER, NULL);
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gtk_text_buffer_create_tag (buffer, "right_justify",
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"justification", GTK_JUSTIFY_RIGHT, NULL);
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gtk_text_buffer_create_tag (buffer, "wide_margins",
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"left_margin", 50, "right_margin", 50,
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NULL);
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gtk_text_buffer_create_tag (buffer, "strikethrough",
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"strikethrough", TRUE, NULL);
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gtk_text_buffer_create_tag (buffer, "underline",
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"underline", PANGO_UNDERLINE_SINGLE, NULL);
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gtk_text_buffer_create_tag (buffer, "double_underline",
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"underline", PANGO_UNDERLINE_DOUBLE, NULL);
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gtk_text_buffer_create_tag (buffer, "superscript",
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"rise", 10 * PANGO_SCALE, /* 10 pixels */
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"size", 8 * PANGO_SCALE, /* 8 points */
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NULL);
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gtk_text_buffer_create_tag (buffer, "subscript",
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"rise", -10 * PANGO_SCALE, /* 10 pixels */
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"size", 8 * PANGO_SCALE, /* 8 points */
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NULL);
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gtk_text_buffer_create_tag (buffer, "rtl_quote",
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"wrap_mode", GTK_WRAP_WORD,
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"direction", GTK_TEXT_DIR_RTL,
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"indent", 30,
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"left_margin", 20,
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"right_margin", 20,
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NULL);
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}
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static void
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insert_text (GtkTextBuffer *buffer)
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{
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GtkTextIter iter;
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GtkTextIter start, end;
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GdkPixbuf *pixbuf;
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GdkPixbuf *scaled;
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pixbuf = gdk_pixbuf_new_from_resource ("/textview/gtk-logo-rgb.gif", NULL);
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g_assert (pixbuf);
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scaled = gdk_pixbuf_scale_simple (pixbuf, 32, 32, GDK_INTERP_BILINEAR);
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g_object_unref (pixbuf);
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pixbuf = scaled;
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/* get start of buffer; each insertion will revalidate the
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* iterator to point to just after the inserted text.
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*/
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gtk_text_buffer_get_iter_at_offset (buffer, &iter, 0);
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gtk_text_buffer_insert (buffer, &iter,
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"The text widget can display text with all kinds of nifty attributes. "
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"It also supports multiple views of the same buffer; this demo is "
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"showing the same buffer in two places.\n\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"Font styles. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert (buffer, &iter, "For example, you can have ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"italic", -1,
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"italic", NULL);
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gtk_text_buffer_insert (buffer, &iter, ", ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"bold", -1,
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"bold", NULL);
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gtk_text_buffer_insert (buffer, &iter, ", or ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"monospace (typewriter)", -1,
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"monospace", NULL);
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gtk_text_buffer_insert (buffer, &iter, ", or ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"big", -1,
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"big", NULL);
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gtk_text_buffer_insert (buffer, &iter, " text. ", -1);
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gtk_text_buffer_insert (buffer, &iter,
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"It's best not to hardcode specific text sizes; you can use relative "
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"sizes as with CSS, such as ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"xx-small", -1,
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"xx-small", NULL);
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gtk_text_buffer_insert (buffer, &iter, " or ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"x-large", -1,
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"x-large", NULL);
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gtk_text_buffer_insert (buffer, &iter,
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" to ensure that your program properly adapts if the user changes the "
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"default font size.\n\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter, "Colors. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert (buffer, &iter, "Colors such as ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"a blue foreground", -1,
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"blue_foreground", NULL);
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gtk_text_buffer_insert (buffer, &iter, " or ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"a red background", -1,
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"red_background", NULL);
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gtk_text_buffer_insert (buffer, &iter, " or even ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"a blue foreground on red background", -1,
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"blue_foreground",
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"red_background",
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NULL);
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gtk_text_buffer_insert (buffer, &iter, " (select that to read it) can be used.\n\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"Underline, strikethrough, and rise. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"Strikethrough", -1,
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"strikethrough", NULL);
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gtk_text_buffer_insert (buffer, &iter, ", ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"underline", -1,
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"underline", NULL);
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gtk_text_buffer_insert (buffer, &iter, ", ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"double underline", -1,
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"double_underline", NULL);
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gtk_text_buffer_insert (buffer, &iter, ", ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"superscript", -1,
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"superscript", NULL);
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gtk_text_buffer_insert (buffer, &iter, ", and ", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"subscript", -1,
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"subscript", NULL);
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gtk_text_buffer_insert (buffer, &iter, " are all supported.\n\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter, "Images. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert (buffer, &iter, "The buffer can have images in it: ", -1);
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gtk_text_buffer_insert_pixbuf (buffer, &iter, pixbuf);
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gtk_text_buffer_insert_pixbuf (buffer, &iter, pixbuf);
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gtk_text_buffer_insert_pixbuf (buffer, &iter, pixbuf);
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gtk_text_buffer_insert (buffer, &iter, " for example.\n\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter, "Spacing. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert (buffer, &iter,
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"You can adjust the amount of space before each line.\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"This line has a whole lot of space before it.\n", -1,
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"big_gap_before_line", "wide_margins", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"You can also adjust the amount of space after each line; "
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"this line has a whole lot of space after it.\n", -1,
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"big_gap_after_line", "wide_margins", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"You can also adjust the amount of space between wrapped lines; "
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"this line has extra space between each wrapped line in the same "
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"paragraph. To show off wrapping, some filler text: the quick "
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"brown fox jumped over the lazy dog. Blah blah blah blah blah "
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"blah blah blah blah.\n", -1,
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"double_spaced_line", "wide_margins", NULL);
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gtk_text_buffer_insert (buffer, &iter,
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"Also note that those lines have extra-wide margins.\n\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"Editability. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"This line is 'locked down' and can't be edited by the user - just "
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"try it! You can't delete this line.\n\n", -1,
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"not_editable", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"Wrapping. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert (buffer, &iter,
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"This line (and most of the others in this buffer) is word-wrapped, "
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"using the proper Unicode algorithm. Word wrap should work in all "
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"scripts and languages that GTK+ supports. Let's make this a long "
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"paragraph to demonstrate: blah blah blah blah blah blah blah blah "
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"blah blah blah blah blah blah blah blah blah blah blah\n\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"This line has character-based wrapping, and can wrap between any two "
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"character glyphs. Let's make this a long paragraph to demonstrate: "
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"blah blah blah blah blah blah blah blah blah blah blah blah blah blah "
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"blah blah blah blah blah\n\n", -1, "char_wrap", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"This line has all wrapping turned off, so it makes the horizontal "
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"scrollbar appear.\n\n\n", -1, "no_wrap", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"Justification. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"\nThis line has center justification.\n", -1,
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"center", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"This line has right justification.\n", -1,
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"right_justify", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"\nThis line has big wide margins. Text text text text text text text "
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"text text text text text text text text text text text text text text "
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"text text text text text text text text text text text text text text "
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"text.\n", -1, "wide_margins", NULL);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"Internationalization. ", -1,
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"heading", NULL);
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gtk_text_buffer_insert (buffer, &iter,
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"You can put all sorts of Unicode text in the buffer.\n\nGerman "
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"(Deutsch S\303\274d) Gr\303\274\303\237 Gott\nGreek "
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"(\316\225\316\273\316\273\316\267\316\275\316\271\316\272\316\254) "
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"\316\223\316\265\316\271\316\254 \317\203\316\261\317\202\nHebrew "
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"\327\251\327\234\327\225\327\235\nJapanese "
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"(\346\227\245\346\234\254\350\252\236)\n\nThe widget properly handles "
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"bidirectional text, word wrapping, DOS/UNIX/Unicode paragraph separators, "
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"grapheme boundaries, and so on using the Pango internationalization "
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"framework.\n", -1);
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gtk_text_buffer_insert (buffer, &iter,
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"Here's a word-wrapped quote in a right-to-left language:\n", -1);
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gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
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"\331\210\331\202\330\257 \330\250\330\257\330\243 "
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"\330\253\331\204\330\247\330\253 \331\205\331\206 "
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"\330\243\331\203\330\253\330\261 \330\247\331\204\331\205\330\244\330\263\330\263\330\247\330\252 "
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"\330\252\331\202\330\257\331\205\330\247 \331\201\331\212 "
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"\330\264\330\250\331\203\330\251 \330\247\331\203\330\263\331\212\331\210\331\206 "
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"\330\250\330\261\330\247\331\205\330\254\331\207\330\247 "
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"\331\203\331\205\331\206\330\270\331\205\330\247\330\252 "
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"\331\204\330\247 \330\252\330\263\330\271\331\211 \331\204\331\204\330\261\330\250\330\255\330\214 "
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"\330\253\331\205 \330\252\330\255\331\210\331\204\330\252 "
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"\331\201\331\212 \330\247\331\204\330\263\331\206\331\210\330\247\330\252 "
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"\330\247\331\204\330\256\331\205\330\263 \330\247\331\204\331\205\330\247\330\266\331\212\330\251 "
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"\330\245\331\204\331\211 \331\205\330\244\330\263\330\263\330\247\330\252 "
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"\331\205\330\247\331\204\331\212\330\251 \331\205\331\206\330\270\331\205\330\251\330\214 "
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"\331\210\330\250\330\247\330\252\330\252 \330\254\330\262\330\241\330\247 "
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"\331\205\331\206 \330\247\331\204\331\206\330\270\330\247\331\205 "
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"\330\247\331\204\331\205\330\247\331\204\331\212 \331\201\331\212 "
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"\330\250\331\204\330\257\330\247\331\206\331\207\330\247\330\214 "
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"\331\210\331\204\331\203\331\206\331\207\330\247 \330\252\330\252\330\256\330\265\330\265 "
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"\331\201\331\212 \330\256\330\257\331\205\330\251 \331\202\330\267\330\247\330\271 "
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"\330\247\331\204\331\205\330\264\330\261\331\210\330\271\330\247\330\252 "
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"\330\247\331\204\330\265\330\272\331\212\330\261\330\251. \331\210\330\243\330\255\330\257 "
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"\330\243\331\203\330\253\330\261 \331\207\330\260\331\207 "
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"\330\247\331\204\331\205\330\244\330\263\330\263\330\247\330\252 "
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"\331\206\330\254\330\247\330\255\330\247 \331\207\331\210 "
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"\302\273\330\250\330\247\331\206\331\203\331\210\330\263\331\210\331\204\302\253 "
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"\331\201\331\212 \330\250\331\210\331\204\331\212\331\201\331\212\330\247.\n\n", -1,
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"rtl_quote", NULL);
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gtk_text_buffer_insert (buffer, &iter,
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"You can put widgets in the buffer: Here's a button: ", -1);
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gtk_text_buffer_create_child_anchor (buffer, &iter);
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gtk_text_buffer_insert (buffer, &iter, " and a menu: ", -1);
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gtk_text_buffer_create_child_anchor (buffer, &iter);
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gtk_text_buffer_insert (buffer, &iter, " and a scale: ", -1);
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gtk_text_buffer_create_child_anchor (buffer, &iter);
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gtk_text_buffer_insert (buffer, &iter, " and an animation: ", -1);
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gtk_text_buffer_create_child_anchor (buffer, &iter);
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gtk_text_buffer_insert (buffer, &iter, " finally a text entry: ", -1);
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gtk_text_buffer_create_child_anchor (buffer, &iter);
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gtk_text_buffer_insert (buffer, &iter, ".\n", -1);
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gtk_text_buffer_insert (buffer, &iter,
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"\n\nThis demo doesn't demonstrate all the GtkTextBuffer features; "
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"it leaves out, for example: invisible/hidden text, tab stops, "
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"application-drawn areas on the sides of the widget for displaying "
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"breakpoints and such...", -1);
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/* Apply word_wrap tag to whole buffer */
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gtk_text_buffer_get_bounds (buffer, &start, &end);
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gtk_text_buffer_apply_tag_by_name (buffer, "word_wrap", &start, &end);
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g_object_unref (pixbuf);
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}
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static gboolean
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find_anchor (GtkTextIter *iter)
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{
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while (gtk_text_iter_forward_char (iter))
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{
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if (gtk_text_iter_get_child_anchor (iter))
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return TRUE;
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}
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return FALSE;
|
|
}
|
|
|
|
static void
|
|
attach_widgets (GtkTextView *text_view)
|
|
{
|
|
GtkTextIter iter;
|
|
GtkTextBuffer *buffer;
|
|
int i;
|
|
|
|
buffer = gtk_text_view_get_buffer (text_view);
|
|
|
|
gtk_text_buffer_get_start_iter (buffer, &iter);
|
|
|
|
i = 0;
|
|
while (find_anchor (&iter))
|
|
{
|
|
GtkTextChildAnchor *anchor;
|
|
GtkWidget *widget;
|
|
|
|
anchor = gtk_text_iter_get_child_anchor (&iter);
|
|
|
|
if (i == 0)
|
|
{
|
|
widget = gtk_button_new_with_label ("Click Me");
|
|
|
|
g_signal_connect (widget, "clicked",
|
|
G_CALLBACK (easter_egg_callback),
|
|
NULL);
|
|
}
|
|
else if (i == 1)
|
|
{
|
|
widget = gtk_combo_box_text_new ();
|
|
|
|
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Option 1");
|
|
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Option 2");
|
|
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Option 3");
|
|
}
|
|
else if (i == 2)
|
|
{
|
|
widget = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL, NULL);
|
|
gtk_range_set_range (GTK_RANGE (widget), 0, 100);
|
|
gtk_widget_set_size_request (widget, 70, -1);
|
|
}
|
|
else if (i == 3)
|
|
{
|
|
widget = gtk_image_new_from_resource ("/textview/floppybuddy.gif");
|
|
}
|
|
else if (i == 4)
|
|
{
|
|
widget = gtk_entry_new ();
|
|
}
|
|
else
|
|
{
|
|
widget = NULL; /* avoids a compiler warning */
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
gtk_text_view_add_child_at_anchor (text_view,
|
|
widget,
|
|
anchor);
|
|
|
|
gtk_widget_show_all (widget);
|
|
|
|
++i;
|
|
}
|
|
}
|
|
|
|
GtkWidget *
|
|
do_textview (GtkWidget *do_widget)
|
|
{
|
|
static GtkWidget *window = NULL;
|
|
|
|
if (!window)
|
|
{
|
|
GtkWidget *vpaned;
|
|
GtkWidget *view1;
|
|
GtkWidget *view2;
|
|
GtkWidget *sw;
|
|
GtkTextBuffer *buffer;
|
|
|
|
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
|
gtk_window_set_screen (GTK_WINDOW (window),
|
|
gtk_widget_get_screen (do_widget));
|
|
gtk_window_set_default_size (GTK_WINDOW (window),
|
|
450, 450);
|
|
|
|
g_signal_connect (window, "destroy",
|
|
G_CALLBACK (gtk_widget_destroyed), &window);
|
|
|
|
gtk_window_set_title (GTK_WINDOW (window), "TextView");
|
|
gtk_container_set_border_width (GTK_CONTAINER (window), 0);
|
|
|
|
vpaned = gtk_paned_new (GTK_ORIENTATION_VERTICAL);
|
|
gtk_container_set_border_width (GTK_CONTAINER(vpaned), 5);
|
|
gtk_container_add (GTK_CONTAINER (window), vpaned);
|
|
|
|
/* For convenience, we just use the autocreated buffer from
|
|
* the first text view; you could also create the buffer
|
|
* by itself with gtk_text_buffer_new(), then later create
|
|
* a view widget.
|
|
*/
|
|
view1 = gtk_text_view_new ();
|
|
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view1));
|
|
view2 = gtk_text_view_new_with_buffer (buffer);
|
|
|
|
sw = gtk_scrolled_window_new (NULL, NULL);
|
|
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
|
|
GTK_POLICY_AUTOMATIC,
|
|
GTK_POLICY_AUTOMATIC);
|
|
gtk_paned_add1 (GTK_PANED (vpaned), sw);
|
|
|
|
gtk_container_add (GTK_CONTAINER (sw), view1);
|
|
|
|
sw = gtk_scrolled_window_new (NULL, NULL);
|
|
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
|
|
GTK_POLICY_AUTOMATIC,
|
|
GTK_POLICY_AUTOMATIC);
|
|
gtk_paned_add2 (GTK_PANED (vpaned), sw);
|
|
|
|
gtk_container_add (GTK_CONTAINER (sw), view2);
|
|
|
|
create_tags (buffer);
|
|
insert_text (buffer);
|
|
|
|
attach_widgets (GTK_TEXT_VIEW (view1));
|
|
attach_widgets (GTK_TEXT_VIEW (view2));
|
|
|
|
gtk_widget_show_all (vpaned);
|
|
}
|
|
|
|
if (!gtk_widget_get_visible (window))
|
|
{
|
|
gtk_widget_show (window);
|
|
}
|
|
else
|
|
{
|
|
gtk_widget_destroy (window);
|
|
window = NULL;
|
|
}
|
|
|
|
return window;
|
|
}
|
|
|
|
static void
|
|
recursive_attach_view (int depth,
|
|
GtkTextView *view,
|
|
GtkTextChildAnchor *anchor)
|
|
{
|
|
GtkWidget *child_view;
|
|
GtkWidget *event_box;
|
|
GdkRGBA color;
|
|
|
|
if (depth > 4)
|
|
return;
|
|
|
|
child_view = gtk_text_view_new_with_buffer (gtk_text_view_get_buffer (view));
|
|
|
|
/* Event box is to add a black border around each child view */
|
|
event_box = gtk_event_box_new ();
|
|
gdk_rgba_parse (&color, "black");
|
|
gtk_widget_override_background_color (event_box, 0, &color);
|
|
|
|
gtk_widget_set_halign (child_view, GTK_ALIGN_FILL);
|
|
gtk_widget_set_valign (child_view, GTK_ALIGN_FILL);
|
|
|
|
gtk_container_add (GTK_CONTAINER (event_box), child_view);
|
|
|
|
gtk_text_view_add_child_at_anchor (view, event_box, anchor);
|
|
|
|
recursive_attach_view (depth + 1, GTK_TEXT_VIEW (child_view), anchor);
|
|
}
|
|
|
|
static void
|
|
easter_egg_callback (GtkWidget *button,
|
|
gpointer data)
|
|
{
|
|
static GtkWidget *window = NULL;
|
|
gpointer window_ptr;
|
|
GtkTextBuffer *buffer;
|
|
GtkWidget *view;
|
|
GtkTextIter iter;
|
|
GtkTextChildAnchor *anchor;
|
|
GtkWidget *sw;
|
|
|
|
if (window)
|
|
{
|
|
gtk_window_present (GTK_WINDOW (window));
|
|
return;
|
|
}
|
|
|
|
buffer = gtk_text_buffer_new (NULL);
|
|
|
|
gtk_text_buffer_get_start_iter (buffer, &iter);
|
|
|
|
gtk_text_buffer_insert (buffer, &iter,
|
|
"This buffer is shared by a set of nested text views.\n Nested view:\n", -1);
|
|
anchor = gtk_text_buffer_create_child_anchor (buffer, &iter);
|
|
gtk_text_buffer_insert (buffer, &iter,
|
|
"\nDon't do this in real applications, please.\n", -1);
|
|
|
|
view = gtk_text_view_new_with_buffer (buffer);
|
|
|
|
recursive_attach_view (0, GTK_TEXT_VIEW (view), anchor);
|
|
|
|
g_object_unref (buffer);
|
|
|
|
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
|
sw = gtk_scrolled_window_new (NULL, NULL);
|
|
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
|
|
GTK_POLICY_AUTOMATIC,
|
|
GTK_POLICY_AUTOMATIC);
|
|
|
|
gtk_container_add (GTK_CONTAINER (window), sw);
|
|
gtk_container_add (GTK_CONTAINER (sw), view);
|
|
|
|
window_ptr = &window;
|
|
g_object_add_weak_pointer (G_OBJECT (window), window_ptr);
|
|
|
|
gtk_window_set_default_size (GTK_WINDOW (window), 300, 400);
|
|
|
|
gtk_widget_show_all (window);
|
|
}
|