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Diffstat (limited to 'examples/text/text.c')
| -rw-r--r-- | examples/text/text.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/examples/text/text.c b/examples/text/text.c new file mode 100644 index 0000000000..b6a0210182 --- /dev/null +++ b/examples/text/text.c @@ -0,0 +1,181 @@ +/* example-start text text.c */ + +/* text.c */ + +#include <stdio.h> +#include <gtk/gtk.h> + +void text_toggle_editable (GtkWidget *checkbutton, + GtkWidget *text) +{ + gtk_text_set_editable(GTK_TEXT(text), + GTK_TOGGLE_BUTTON(checkbutton)->active); +} + +void text_toggle_word_wrap (GtkWidget *checkbutton, + GtkWidget *text) +{ + gtk_text_set_word_wrap(GTK_TEXT(text), + GTK_TOGGLE_BUTTON(checkbutton)->active); +} + +void close_application( GtkWidget *widget, gpointer data ) +{ + gtk_main_quit(); +} + +int main (int argc, char *argv[]) +{ + GtkWidget *window; + GtkWidget *box1; + GtkWidget *box2; + GtkWidget *hbox; + GtkWidget *button; + GtkWidget *check; + GtkWidget *separator; + GtkWidget *table; + GtkWidget *vscrollbar; + GtkWidget *text; + GdkColormap *cmap; + GdkColor colour; + GdkFont *fixed_font; + + FILE *infile; + + gtk_init (&argc, &argv); + + window = gtk_window_new (GTK_WINDOW_TOPLEVEL); + gtk_widget_set_usize (window, 600, 500); + gtk_window_set_policy (GTK_WINDOW(window), TRUE, TRUE, FALSE); + gtk_signal_connect (GTK_OBJECT (window), "destroy", + GTK_SIGNAL_FUNC(close_application), + NULL); + gtk_window_set_title (GTK_WINDOW (window), "Text Widget Example"); + gtk_container_border_width (GTK_CONTAINER (window), 0); + + + box1 = gtk_vbox_new (FALSE, 0); + gtk_container_add (GTK_CONTAINER (window), box1); + gtk_widget_show (box1); + + + box2 = gtk_vbox_new (FALSE, 10); + gtk_container_border_width (GTK_CONTAINER (box2), 10); + gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); + gtk_widget_show (box2); + + + table = gtk_table_new (2, 2, FALSE); + gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2); + gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2); + gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0); + gtk_widget_show (table); + + /* Create the GtkText widget */ + text = gtk_text_new (NULL, NULL); + gtk_text_set_editable (GTK_TEXT (text), TRUE); + gtk_table_attach (GTK_TABLE (table), text, 0, 1, 0, 1, + GTK_EXPAND | GTK_SHRINK | GTK_FILL, + GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (text); + + /* Add a vertical scrollbar to the GtkText widget */ + vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj); + gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1, + GTK_FILL, GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (vscrollbar); + + /* Get the system colour map and allocate the colour red */ + cmap = gdk_colormap_get_system(); + colour.red = 0xffff; + colour.green = 0; + colour.blue = 0; + if (!gdk_color_alloc(cmap, &colour)) { + g_error("couldn't allocate colour"); + } + + /* Load a fixed font */ + fixed_font = gdk_font_load ("-misc-fixed-medium-r-*-*-*-140-*-*-*-*-*-*"); + + /* Realizing a widget creates a window for it, ready for us to insert some text */ + gtk_widget_realize (text); + + /* Freeze the text widget, ready for multiple updates */ + gtk_text_freeze (GTK_TEXT (text)); + + /* Insert some coloured text */ + gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL, + "Supports ", -1); + gtk_text_insert (GTK_TEXT (text), NULL, &colour, NULL, + "colored ", -1); + gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL, + "text and different ", -1); + gtk_text_insert (GTK_TEXT (text), fixed_font, &text->style->black, NULL, + "fonts\n\n", -1); + + /* Load the file text.c into the text window */ + + infile = fopen("text.c", "r"); + + if (infile) { + char buffer[1024]; + int nchars; + + while (1) + { + nchars = fread(buffer, 1, 1024, infile); + gtk_text_insert (GTK_TEXT (text), fixed_font, NULL, + NULL, buffer, nchars); + + if (nchars < 1024) + break; + } + + fclose (infile); + } + + /* Thaw the text widget, allowing the updates to become visible */ + gtk_text_thaw (GTK_TEXT (text)); + + hbox = gtk_hbutton_box_new (); + gtk_box_pack_start (GTK_BOX (box2), hbox, FALSE, FALSE, 0); + gtk_widget_show (hbox); + + check = gtk_check_button_new_with_label("Editable"); + gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, FALSE, 0); + gtk_signal_connect (GTK_OBJECT(check), "toggled", + GTK_SIGNAL_FUNC(text_toggle_editable), text); + gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(check), TRUE); + gtk_widget_show (check); + check = gtk_check_button_new_with_label("Wrap Words"); + gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, TRUE, 0); + gtk_signal_connect (GTK_OBJECT(check), "toggled", + GTK_SIGNAL_FUNC(text_toggle_word_wrap), text); + gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(check), FALSE); + gtk_widget_show (check); + + separator = gtk_hseparator_new (); + gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0); + gtk_widget_show (separator); + + box2 = gtk_vbox_new (FALSE, 10); + gtk_container_border_width (GTK_CONTAINER (box2), 10); + gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0); + gtk_widget_show (box2); + + button = gtk_button_new_with_label ("close"); + gtk_signal_connect (GTK_OBJECT (button), "clicked", + GTK_SIGNAL_FUNC(close_application), + NULL); + gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0); + GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT); + gtk_widget_grab_default (button); + gtk_widget_show (button); + + gtk_widget_show (window); + + gtk_main (); + + return 0; +} +/* example-end */ |