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5d9166f15b
gtk/demos/gtk-demo/main.c
Jonathan Blandford 5d9166f15b Fix to use GtkSelectionMode. ditto ditto ditto. 
Mon Aug 27 15:28:56 2001  Jonathan Blandford  <jrb@redhat.com>

	* tests/testtreefocus.c (main): Fix to use GtkSelectionMode.
	* tests/treestoretest.c (make_window): ditto
	* demos/gtk-demo/main.c (create_tree): ditto
	* demos/gtk-demo/stock_browser.c (do_stock_browser): ditto.
2001-08-27 19:42:08 +00:00

806 lines
18 KiB
C
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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <gtk/gtk.h>
#include <demos.h>
static GtkTextBuffer *info_buffer;
static GtkTextBuffer *source_buffer;
static gchar *current_file = NULL;
enum {
TITLE_COLUMN,
FILENAME_COLUMN,
FUNC_COLUMN,
ITALIC_COLUMN,
NUM_COLUMNS
};
typedef struct _CallbackData CallbackData;
struct _CallbackData
{
GtkTreeModel *model;
GtkTreePath *path;
};
static void
window_closed_cb (GtkWidget *window, gpointer data)
{
CallbackData *cbdata = data;
GtkTreeIter iter;
gboolean italic;
gtk_tree_model_get_iter (cbdata->model, &iter, cbdata->path);
gtk_tree_model_get (GTK_TREE_MODEL (cbdata->model), &iter,
ITALIC_COLUMN, &italic,
-1);
if (italic)
gtk_tree_store_set (GTK_TREE_STORE (cbdata->model), &iter,
ITALIC_COLUMN, !italic,
-1);
gtk_tree_path_free (cbdata->path);
g_free (cbdata);
}
gboolean
read_line (FILE *stream, GString *str)
{
int n_read = 0;
flockfile (stream);
g_string_truncate (str, 0);
while (1)
{
int c;
c = getc_unlocked (stream);
if (c == EOF)
goto done;
else
n_read++;
switch (c)
{
case '\r':
case '\n':
{
int next_c = getc_unlocked (stream);
if (!(next_c == EOF ||
(c == '\r' && next_c == '\n') ||
(c == '\n' && next_c == '\r')))
ungetc (next_c, stream);
goto done;
}
default:
g_string_append_c (str, c);
}
}
done:
funlockfile (stream);
return n_read > 0;
}
/* Stupid syntax highlighting.
*
* No regex was used in the making of this highlighting.
* It should only work for simple cases. This is good, as
* that's all we should have in the demos.
*/
/* This code should not be used elsewhere, except perhaps as an example of how
* to iterate through a text buffer.
*/
enum {
STATE_NORMAL,
STATE_IN_COMMENT,
};
static gchar *tokens[] =
{
"/*",
"\"",
NULL
};
static gchar *types[] =
{
"static",
"const ",
"void",
"gint",
"int ",
"char ",
"gchar ",
"gfloat",
"float",
"gint8",
"gint16",
"gint32",
"guint",
"guint8",
"guint16",
"guint32",
"guchar",
"glong",
"gboolean" ,
"gshort",
"gushort",
"gulong",
"gdouble",
"gldouble",
"gpointer",
"NULL",
"GList",
"GSList",
"FALSE",
"TRUE",
"FILE ",
"GtkObject ",
"GtkColorSelection ",
"GtkWidget ",
"GtkButton ",
"GdkColor ",
"GdkRectangle ",
"GdkEventExpose ",
"GdkGC ",
"GdkPixbufLoader ",
"GdkPixbuf ",
"GError",
"size_t",
NULL
};
static gchar *control[] =
{
" if ",
" while ",
" else",
" do ",
" for ",
"?",
":",
"return ",
"goto ",
NULL
};
void
parse_chars (gchar *text,
gchar **end_ptr,
gint *state,
gchar **tag,
gboolean start)
{
gint i;
gchar *next_token;
/* Handle comments first */
if (*state == STATE_IN_COMMENT)
{
*end_ptr = strstr (text, "*/");
if (*end_ptr)
{
*end_ptr += 2;
*state = STATE_NORMAL;
*tag = "comment";
}
return;
}
*tag = NULL;
*end_ptr = NULL;
/* check for comment */
if (!strncmp (text, "/*", 2))
{
*end_ptr = strstr (text, "*/");
if (*end_ptr)
*end_ptr += 2;
else
*state = STATE_IN_COMMENT;
*tag = "comment";
return;
}
/* check for preprocessor defines */
if (*text == '#' && start)
{
*end_ptr = NULL;
*tag = "preprocessor";
return;
}
/* functions */
if (start && * text != '\t' && *text != ' ' && *text != '{' && *text != '}')
{
if (strstr (text, "("))
{
*end_ptr = strstr (text, "(");
*tag = "function";
return;
}
}
/* check for types */
for (i = 0; types[i] != NULL; i++)
if (!strncmp (text, types[i], strlen (types[i])))
{
*end_ptr = text + strlen (types[i]);
*tag = "type";
return;
}
/* check for control */
for (i = 0; control[i] != NULL; i++)
if (!strncmp (text, control[i], strlen (control[i])))
{
*end_ptr = text + strlen (control[i]);
*tag = "control";
return;
}
/* check for string */
if (text[0] == '"')
{
gint maybe_escape = FALSE;
*end_ptr = text + 1;
*tag = "string";
while (**end_ptr != '\000')
{
if (**end_ptr == '\"' && !maybe_escape)
{
*end_ptr += 1;
return;
}
if (**end_ptr == '\\')
maybe_escape = TRUE;
else
maybe_escape = FALSE;
*end_ptr += 1;
}
return;
}
/* not at the start of a tag. Find the next one. */
for (i = 0; tokens[i] != NULL; i++)
{
next_token = strstr (text, tokens[i]);
if (next_token)
{
if (*end_ptr)
*end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
else
*end_ptr = next_token;
}
}
for (i = 0; types[i] != NULL; i++)
{
next_token = strstr (text, types[i]);
if (next_token)
{
if (*end_ptr)
*end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
else
*end_ptr = next_token;
}
}
for (i = 0; control[i] != NULL; i++)
{
next_token = strstr (text, control[i]);
if (next_token)
{
if (*end_ptr)
*end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
else
*end_ptr = next_token;
}
}
}
/* While not as cool as c-mode, this will do as a quick attempt at highlighting */
static void
fontify ()
{
GtkTextIter start_iter, next_iter, tmp_iter;
gint state;
gchar *text;
gchar *start_ptr, *end_ptr;
gchar *tag;
state = STATE_NORMAL;
gtk_text_buffer_get_iter_at_offset (source_buffer, &start_iter, 0);
next_iter = start_iter;
while (gtk_text_iter_forward_line (&next_iter))
{
gboolean start = TRUE;
start_ptr = text = gtk_text_iter_get_text (&start_iter, &next_iter);
do
{
parse_chars (start_ptr, &end_ptr, &state, &tag, start);
start = FALSE;
if (end_ptr)
{
tmp_iter = start_iter;
gtk_text_iter_forward_chars (&tmp_iter, end_ptr - start_ptr);
}
else
{
tmp_iter = next_iter;
}
if (tag)
gtk_text_buffer_apply_tag_by_name (source_buffer, tag, &start_iter, &tmp_iter);
start_iter = tmp_iter;
start_ptr = end_ptr;
}
while (end_ptr);
g_free (text);
start_iter = next_iter;
}
}
void
load_file (const gchar *filename)
{
FILE *file;
GtkTextIter start, end;
GString *buffer = g_string_new (NULL);
int state = 0;
gboolean in_para = 0;
if (current_file && !strcmp (current_file, filename))
{
g_string_free (buffer, TRUE);
return;
}
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);
gtk_text_buffer_get_bounds (source_buffer, &start, &end);
gtk_text_buffer_delete (source_buffer, &start, &end);
file = fopen (filename, "r");
if (!file)
{
char *installed = g_strconcat (DEMOCODEDIR,
G_DIR_SEPARATOR_S,
filename,
NULL);
file = fopen (installed, "r");
g_free (installed);
}
if (!file)
{
g_warning ("Cannot open %s: %s\n", filename, g_strerror (errno));
return;
}
gtk_text_buffer_get_iter_at_offset (info_buffer, &start, 0);
while (read_line (file, buffer))
{
gchar *p = buffer->str;
gchar *q;
switch (state)
{
case 0:
/* Reading title */
while (*p == '/' || *p == '*' || isspace (*p))
p++;
q = p + strlen (p);
while (q > p && isspace (*(q - 1)))
q--;
if (q > p)
{
int len_chars = g_utf8_pointer_to_offset (p, q);
end = start;
g_assert (strlen (p) >= q - p);
gtk_text_buffer_insert (info_buffer, &end, p, q - p);
start = end;
gtk_text_iter_backward_chars (&start, len_chars);
gtk_text_buffer_apply_tag_by_name (info_buffer, "title", &start, &end);
start = end;
state++;
}
break;
case 1:
/* Reading body of info section */
while (isspace (*p))
p++;
if (*p == '*' && *(p + 1) == '/')
{
gtk_text_buffer_get_iter_at_offset (source_buffer, &start, 0);
state++;
}
else
{
int len;
while (*p == '*' || isspace (*p))
p++;
len = strlen (p);
while (isspace (*(p + len - 1)))
len--;
if (len > 0)
{
if (in_para)
gtk_text_buffer_insert (info_buffer, &start, " ", 1);
g_assert (strlen (p) >= len);
gtk_text_buffer_insert (info_buffer, &start, p, len);
in_para = 1;
}
else
{
gtk_text_buffer_insert (info_buffer, &start, "\n", 1);
in_para = 0;
}
}
break;
case 2:
/* Skipping blank lines */
while (isspace (*p))
p++;
if (*p)
{
p = buffer->str;
state++;
/* Fall through */
}
else
break;
case 3:
/* Reading program body */
gtk_text_buffer_insert (source_buffer, &start, p, -1);
gtk_text_buffer_insert (source_buffer, &start, "\n", 1);
break;
}
}
fontify ();
g_string_free (buffer, TRUE);
}
gboolean
button_press_event_cb (GtkTreeView *tree_view,
GdkEventButton *event,
GtkTreeModel *model)
{
if (event->type == GDK_2BUTTON_PRESS)
{
GtkTreePath *path = NULL;
gtk_tree_view_get_path_at_pos (tree_view,
event->window,
event->x,
event->y,
&path,
NULL,
NULL,
NULL);
if (path)
{
GtkTreeIter iter;
gboolean italic;
GDoDemoFunc func;
GtkWidget *window;
gtk_tree_model_get_iter (model, &iter, path);
gtk_tree_model_get (GTK_TREE_MODEL (model),
&iter,
FUNC_COLUMN, &func,
ITALIC_COLUMN, &italic,
-1);
gtk_tree_store_set (GTK_TREE_STORE (model),
&iter,
ITALIC_COLUMN, !italic,
-1);
window = (func) ();
if (window != NULL)
{
CallbackData *cbdata;
cbdata = g_new (CallbackData, 1);
cbdata->model = model;
cbdata->path = path;
gtk_signal_connect (GTK_OBJECT (window),
"destroy",
GTK_SIGNAL_FUNC (window_closed_cb),
cbdata);
}
else
{
gtk_tree_path_free (path);
}
}
gtk_signal_emit_stop_by_name (GTK_OBJECT (tree_view),
"button_press_event");
return TRUE;
}
return FALSE;
}
void
row_activated_cb (GtkTreeView *tree_view,
GtkTreePath *path,
GtkTreeViewColumn *column)
{
GtkTreeIter iter;
gboolean italic;
GDoDemoFunc func;
GtkWidget *window;
GtkTreeModel *model;
model = gtk_tree_view_get_model (tree_view);
gtk_tree_model_get_iter (model, &iter, path);
gtk_tree_model_get (GTK_TREE_MODEL (model),
&iter,
FUNC_COLUMN, &func,
ITALIC_COLUMN, &italic,
-1);
gtk_tree_store_set (GTK_TREE_STORE (model),
&iter,
ITALIC_COLUMN, !italic,
-1);
window = (func) ();
if (window != NULL)
{
CallbackData *cbdata;
cbdata = g_new (CallbackData, 1);
cbdata->model = model;
cbdata->path = gtk_tree_path_copy (path);
gtk_signal_connect (GTK_OBJECT (window),
"destroy",
GTK_SIGNAL_FUNC (window_closed_cb),
cbdata);
}
}
static void
selection_cb (GtkTreeSelection *selection,
GtkTreeModel *model)
{
GtkTreeIter iter;
GValue value = {0, };
if (! gtk_tree_selection_get_selected (selection, NULL, &iter))
return;
gtk_tree_model_get_value (model, &iter,
FILENAME_COLUMN,
&value);
load_file (g_value_get_string (&value));
g_value_unset (&value);
}
static GtkWidget *
create_text (GtkTextBuffer **buffer,
gboolean is_source)
{
GtkWidget *scrolled_window;
GtkWidget *text_view;
PangoFontDescription *font_desc;
scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_SHADOW_IN);
text_view = gtk_text_view_new ();
*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);
gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);
if (is_source)
{
font_desc = pango_font_description_from_string ("Courier 12");
gtk_widget_modify_font (text_view, font_desc);
pango_font_description_free (font_desc);
gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
GTK_WRAP_NONE);
}
else
{
/* Make it a bit nicer for text. */
gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
GTK_WRAP_WORD);
gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (text_view),
2);
gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (text_view),
2);
}
return scrolled_window;
}
/* Technically a list, but if we do go to 80 demos, we may want to move to a tree */
static GtkWidget *
create_tree (void)
{
GtkTreeSelection *selection;
GtkCellRenderer *cell;
GtkWidget *tree_view;
GtkTreeViewColumn *column;
GtkTreeStore *model;
GtkTreeIter iter;
gint i;
model = gtk_tree_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_BOOLEAN);
tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
gtk_tree_selection_set_mode (GTK_TREE_SELECTION (selection),
GTK_SELECTION_BROWSE);
gtk_widget_set_size_request (tree_view, 200, -1);
for (i=0; i < G_N_ELEMENTS (testgtk_demos); i++)
{
gtk_tree_store_append (GTK_TREE_STORE (model), &iter, NULL);
gtk_tree_store_set (GTK_TREE_STORE (model),
&iter,
TITLE_COLUMN, testgtk_demos[i].title,
FILENAME_COLUMN, testgtk_demos[i].filename,
FUNC_COLUMN, testgtk_demos[i].func,
ITALIC_COLUMN, FALSE,
-1);
}
cell = gtk_cell_renderer_text_new ();
g_object_set (G_OBJECT (cell),
"style", PANGO_STYLE_ITALIC,
NULL);
column = gtk_tree_view_column_new_with_attributes ("Widget (double click for demo)",
cell,
"text", TITLE_COLUMN,
"style_set", ITALIC_COLUMN,
NULL);
gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view),
GTK_TREE_VIEW_COLUMN (column));
g_signal_connect (G_OBJECT (selection), "changed", GTK_SIGNAL_FUNC (selection_cb), model);
g_signal_connect (G_OBJECT (tree_view), "row_activated", GTK_SIGNAL_FUNC (row_activated_cb), model);
return tree_view;
}
int
main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *notebook;
GtkWidget *hbox;
GtkWidget *tree;
GtkTextTag *tag;
/* Most code in gtk-demo is intended to be exemplary, but not
* these few lines, which are just a hack so gtk-demo will work
* in the GTK tree without installing it.
*/
if (g_file_test ("../../gdk-pixbuf/.libs/libpixbufloader-pnm.so",
G_FILE_TEST_EXISTS))
{
putenv ("GDK_PIXBUF_MODULEDIR=../../gdk-pixbuf/.libs");
putenv ("GTK_IM_MODULE_FILE=../../modules/input/gtk.immodules");
}
/* -- End of hack -- */
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "GTK+ Code Demos");
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
hbox = gtk_hbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), hbox);
tree = create_tree ();
gtk_box_pack_start (GTK_BOX (hbox), tree, FALSE, FALSE, 0);
notebook = gtk_notebook_new ();
gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
create_text (&info_buffer, FALSE),
gtk_label_new_with_mnemonic ("_Info"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
create_text (&source_buffer, TRUE),
gtk_label_new_with_mnemonic ("_Source"));
tag = gtk_text_buffer_create_tag (info_buffer, "title",
"font", "Sans 18",
NULL);
tag = gtk_text_buffer_create_tag (source_buffer, "comment",
"foreground", "red",
NULL);
tag = gtk_text_buffer_create_tag (source_buffer, "type",
"foreground", "ForestGreen",
NULL);
tag = gtk_text_buffer_create_tag (source_buffer, "string",
"foreground", "RosyBrown",
"weight", PANGO_WEIGHT_BOLD,
NULL);
tag = gtk_text_buffer_create_tag (source_buffer, "control",
"foreground", "purple",
NULL);
tag = gtk_text_buffer_create_tag (source_buffer, "preprocessor",
"style", PANGO_STYLE_OBLIQUE,
"foreground", "burlywood4",
NULL);
tag = gtk_text_buffer_create_tag (source_buffer, "function",
"weight", PANGO_WEIGHT_BOLD,
"foreground", "DarkGoldenrod4",
NULL);
gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
gtk_widget_show_all (window);
load_file (testgtk_demos[0].filename);
gtk_main ();
return 0;
}
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