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handle allocation > requisition for the gradient preview. 

* libgimp/gimpgradientmenu.c: handle allocation > requisition for
	the gradient preview.
This commit is contained in:
Sven Neumann 2004-10-03 22:47:36 +00:00
parent 224633fef3
commit 8fd6576149
1 changed files with 42 additions and 10 deletions

52
libgimp/gimpgradientmenu.c
View File

@ -65,6 +65,10 @@ static void gimp_gradient_select_widget_clicked (GtkWidget *widget,
GradientSelect *gradient_sel);
static void gimp_gradient_select_widget_destroy (GtkWidget *widget,
GradientSelect *gradient_sel);
static void gimp_gradient_select_preview_size_allocate
(GtkWidget *widget,
GtkAllocation *allocation,
GradientSelect *gradient_sel);
static void gimp_gradient_select_preview_expose (GtkWidget *preview,
GdkEventExpose *event,
GradientSelect *gradient_sel);
@ -108,6 +112,8 @@ gimp_gradient_select_widget_new (const gchar *title,
gradient_sel->button = gtk_button_new ();
gradient_sel->gradient_name = g_strdup (gradient_name);
g_signal_connect (gradient_sel->button, "clicked",
G_CALLBACK (gimp_gradient_select_widget_clicked),
gradient_sel);
@ -121,18 +127,14 @@ gimp_gradient_select_widget_new (const gchar *title,
gradient_sel->preview);
gtk_widget_show (gradient_sel->preview);
g_signal_connect (gradient_sel->preview, "size_allocate",
G_CALLBACK (gimp_gradient_select_preview_size_allocate),
gradient_sel);
g_signal_connect (gradient_sel->preview, "expose_event",
G_CALLBACK (gimp_gradient_select_preview_expose),
gradient_sel);
/* Do initial gradient setup */
gradient_sel->gradient_name =
gimp_gradients_get_gradient_data (gradient_name,
gradient_sel->sample_size,
gradient_sel->reverse,
&gradient_sel->width,
&gradient_sel->gradient_data);
g_object_set_data (G_OBJECT (gradient_sel->button),
GRADIENT_SELECT_DATA_KEY, gradient_sel);
@ -278,6 +280,34 @@ gimp_gradient_select_widget_destroy (GtkWidget *widget,
g_free (gradient_sel);
}
static void
gimp_gradient_select_preview_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
GradientSelect *gradient_sel)
{
gchar *name;
gdouble *data;
gint width;
name = gimp_gradients_get_gradient_data (gradient_sel->gradient_name,
allocation->width,
gradient_sel->reverse,
&width,
&data);
if (name)
{
gradient_sel->sample_size = allocation->width;
gradient_sel->width = width;
g_free (gradient_sel->gradient_name);
gradient_sel->gradient_name = name;
g_free (gradient_sel->gradient_data);
gradient_sel->gradient_data = data;
}
}
static void
gimp_gradient_select_preview_expose (GtkWidget *widget,
GdkEventExpose *event,
@ -290,8 +320,10 @@ gimp_gradient_select_preview_expose (GtkWidget *widget,
guchar *odd;
gint x, y;
/* Draw the gradient */
src = gradient_sel->gradient_data;
if (! src)
return;
p0 = even = g_malloc (gradient_sel->width * 3);
p1 = odd = g_malloc (gradient_sel->width * 3);
@ -334,7 +366,7 @@ gimp_gradient_select_preview_expose (GtkWidget *widget,
event->area.x, y,
event->area.width, 1,
GDK_RGB_DITHER_MAX,
buf + event->area.x,
buf + event->area.x * 3,
gradient_sel->width * 3,
- event->area.x, - y);
}