Use floor() instead of truncating to integer values so we get translation

Wed Jan 20 11:19:00 1999  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtklabel.c: Use floor() instead of truncating
	to integer values so we get translation invariance.

	* gtk/gtklayout.c (gtk_layout_size_allocate): Set upper
	and lower values for adjustments in size_allocate().

	* gdk/gdkwindow.c gdk/gdk.h gdk/gdkprivate.h: New
	function gdk_window_set_static_gravities() to set
	up a window for guffaw scrolling.

	* gdk/gdkwindow.c (gdk_window_internal_destroy): Set flags
	indicating destroyed state before cleanup.

	* gtk/gtkprivate.h gtk/gtkwidget.c: Add a new
	private flag IS_OFFSCREEN. If set, this indicates
	to GTK+ that the widget is not to be considered
	viewable regardless of its map state. Queued draws
	on offscreen widgets are suppressed.

	Added new function static gtk_widget_is_offscreen() to
	check this flag on a widget and its ancestors.

	* gtk/gtklayout.[ch]: Major revisions.

	- Use gdk_window_set_static_gravities to set static gravity
	on all child windows, and thus avoid having to create a window
	for NO_WINDOW children.

	- Adjust allocations of children as we scroll them
	so queued draws work correctly.

	- Don't allocate our children directly in a put()
	or move(); just queue a resize() like every other
	widget.

	* gtk/testgtk.c: Make the arrows on the scrollbars
	work, create a larger and more demanding test.

1 files changed, 8 insertions, 7 deletions

diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index e32efbac37..7c3fc744ea 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -15,6 +15,7 @@
  * License along with this library; if not, write to the Free
  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
+#include <math.h>
 #include <string.h>
 #include "gtklabel.h"
 #include "gdk/gdkkeysyms.h"
@@ -926,14 +927,14 @@ gtk_label_expose (GtkWidget      *widget,
       gdk_gc_set_clip_rectangle (widget->style->white_gc, &event->area);
       gdk_gc_set_clip_rectangle (widget->style->fg_gc[widget->state], &event->area);
       
-      x = widget->allocation.x + misc->xpad +
-	(widget->allocation.width - label->max_width - 2 * misc->xpad) 
-	* misc->xalign + 0.5;
+      x = floor (widget->allocation.x + misc->xpad +
+		 ((widget->allocation.width - label->max_width - 2 * misc->xpad) 
+		  * misc->xalign) + 0.5);
       
-      y = (widget->allocation.y
-	   + (widget->allocation.height
-	      - widget->requisition.height) * misc->yalign
-	   + misc->ypad + 0.5);
+      y = floor (widget->allocation.y
+		 + (widget->allocation.height
+		    - widget->requisition.height) * misc->yalign
+		 + misc->ypad + 0.5);
       for (word = label->words; word; word = word->next)
 	{
 	  gchar save = word->beginning[word->length];