txtwin.c

   1 #include <string.h>
   2 #include <stdlib.h>
   3 #include <gtk/gtk.h>
   4 #include <gdk/gdkkeysyms.h>
   5 #include "txtwin.h"
   6 #include "util.h"
   7
   8 struct txtwin {
   9         /* A GtkTextView */
  10         GtkWidget *main;
  11         /* A GtkEntry */
  12         GtkWidget *bar;
  13 };
  14
  15 static void on_window_destroy(GtkWidget *widget, gpointer data)
  16 {
  17         gtk_main_quit();
  18 }
  19
  20 static void scroll(GtkTextView *view, float amount)
  21 {
  22         GdkRectangle rect;
  23         GtkTextIter iter;
  24         GtkTextBuffer *buffer;
  25         int y;
  26         buffer = gtk_text_view_get_buffer(view);
  27         gtk_text_view_get_visible_rect(view, &rect);
  28         y = rect.y + amount * rect.height;
  29         gtk_text_view_get_iter_at_location(view, &iter, 0, y);
  30         gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(view), &iter,
  31                                      0.0, TRUE, 0, 0);
  32 }
  33
  34 static gboolean on_key_press(GtkWidget *widget, GdkEventKey *event,
  35                              gpointer data)
  36 {
  37         struct txtwin *tw = data;
  38         switch(event->keyval) {
  39         case GDK_j:
  40                 scroll(GTK_TEXT_VIEW(tw->main), 0.05);
  41                 break;
  42         case GDK_k:
  43                 scroll(GTK_TEXT_VIEW(tw->main), -0.05);
  44                 break;
  45         case GDK_q:
  46                 gtk_main_quit();
  47                 break;
  48         default:
  49                 break;
  50         }
  51         return 1;
  52 }
  53
  54 struct txtwin *txtwin_alloc()
  55 {
  56         GtkWidget *window;
  57         GtkWidget *vbox;
  58         GtkTextBuffer *buffer;
  59         struct txtwin *tw = xmalloc(sizeof(struct txtwin));
  60         memset(tw, 0, sizeof(*tw));
  61         window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  62         gtk_window_set_title(GTK_WINDOW(window), "CNOOR");
  63         g_signal_connect(G_OBJECT(window), "destroy",
  64                          G_CALLBACK(on_window_destroy), NULL);
  65
  66         vbox = gtk_vbox_new(FALSE, 2);
  67         gtk_container_add(GTK_CONTAINER(window), vbox);
  68
  69         /* create the textview */
  70         tw->main = gtk_text_view_new();
  71         gtk_box_pack_start(GTK_BOX(vbox), tw->main, 1, 1, 0);
  72         gtk_signal_connect(GTK_OBJECT(tw->main), "key_press_event",
  73                            GTK_SIGNAL_FUNC(on_key_press), tw);
  74         gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(tw->main),
  75                                     GTK_WRAP_WORD);
  76         gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(tw->main), FALSE);
  77
  78         /* write something */
  79         buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(tw->main));
  80
  81         /* create the minibuffer */
  82         tw->bar = gtk_entry_new();
  83         gtk_box_pack_start(GTK_BOX(vbox), tw->bar, 0, 0, 0);
  84         gtk_signal_connect(GTK_OBJECT(tw->bar), "key_press_event",
  85                            GTK_SIGNAL_FUNC(on_key_press), tw);
  86
  87         gtk_widget_show_all(window);
  88         return tw;
  89 }
  90
  91 void txtwin_free(struct txtwin *tw)
  92 {
  93         free(tw);
  94 }
  95
  96 void txtwin_loop(struct txtwin *tw)
  97 {
  98         gtk_main();
  99 }
 100
 101 void txtwin_gtk_init(int argc, char **argv)
 102 {
 103         gtk_init(&argc, &argv);
 104 }
 105
 106 static GtkTextBuffer *txtwin_buffer(struct txtwin *tw)
 107 {
 108         return gtk_text_view_get_buffer(GTK_TEXT_VIEW(tw->main));
 109 }
 110
 111 void txtwin_append(struct txtwin *tw, char *s)
 112 {
 113         GtkTextBuffer *buf = txtwin_buffer(tw);
 114         gtk_text_buffer_insert_at_cursor(buf, s, strlen(s));
 115 }