Move more functions into the new gtkmisc.c.

[PuTTY.git] / unix / gtkmisc.c

diff --git a/unix/gtkmisc.c b/unix/gtkmisc.c
index d6cfccc2959a989df239f22bf288fc5af80912a0..bf2647fd038045aff833835c3f6bf18d7bf13236 100644 (file)
--- a/unix/gtkmisc.c
+++ b/unix/gtkmisc.c
@@ -15,6 +15,58 @@
 #include "putty.h"
 #include "gtkcompat.h"
 
+void get_label_text_dimensions(const char *text, int *width, int *height)
+{
+    /*
+     * Determine the dimensions of a piece of text in the standard
+     * font used in GTK interface elements like labels. We do this by
+     * instantiating an actual GtkLabel, and then querying its size.
+     *
+     * But GTK2 and GTK3 require us to query the size completely
+     * differently. I'm sure there ought to be an easier approach than
+     * the way I'm doing this in GTK3, too!
+     */
+    GtkWidget *label = gtk_label_new(text);
+
+#if GTK_CHECK_VERSION(3,0,0)
+    PangoLayout *layout = gtk_label_get_layout(GTK_LABEL(label));
+    PangoRectangle logrect;
+    pango_layout_get_extents(layout, NULL, &logrect);
+    if (width)
+        *width = logrect.width / PANGO_SCALE;
+    if (height)
+        *height = logrect.height / PANGO_SCALE;
+#else
+    GtkRequisition req;
+    gtk_widget_size_request(label, &req);
+    if (width)
+        *width = req.width;
+    if (height)
+        *height = req.height;
+#endif
+
+    g_object_ref_sink(G_OBJECT(label));
+#if GTK_CHECK_VERSION(2,10,0)
+    g_object_unref(label);
+#endif
+}
+
+int string_width(const char *text)
+{
+    int ret;
+    get_label_text_dimensions(text, &ret, NULL);
+    return ret;
+}
+
+void align_label_left(GtkLabel *label)
+{
+#if GTK_CHECK_VERSION(3,16,0)
+    gtk_label_set_xalign(label, 0.0);
+#else
+    gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
+#endif
+}
+
 /* ----------------------------------------------------------------------
  * Functions to arrange controls in a basically dialog-like window.
  *