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improved preformance by rendering the buffer only when needed for an 

2002-11-01  Michael Natterer  <mitch@gimp.org>

	* libgimpwidgets/gimpcolorscale.[ch]: improved preformance by
	rendering the buffer only when needed for an expose instead of
	after each color/channel change.
This commit is contained in:
Michael Natterer 2002-11-01 13:03:09 +00:00 committed by Michael Natterer
parent 349289dc9c
commit 611fcf2ee6
3 changed files with 20 additions and 4 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
2002-11-01 Michael Natterer <mitch@gimp.org>
* libgimpwidgets/gimpcolorscale.[ch]: improved preformance by
rendering the buffer only when needed for an expose instead of
after each color/channel change.
2002-11-01 Michael Natterer <mitch@gimp.org>
* libgimpwidgets/gimpcolorscale.c (gimp_color_scale_render): no

16
libgimpwidgets/gimpcolorscale.c
View File

@ -105,8 +105,10 @@ gimp_color_scale_init (GimpColorScale *scale)
range->slider_size_fixed = TRUE;
range->orientation = GTK_ORIENTATION_HORIZONTAL;
range->flippable = TRUE;
/* range->update_policy = GTK_UPDATE_DELAYED; */
scale->channel = GIMP_COLOR_SELECTOR_VALUE;
scale->channel = GIMP_COLOR_SELECTOR_VALUE;
scale->needs_render = TRUE;
gimp_rgba_set (&scale->rgb, 0.0, 0.0, 0.0, 1.0);
gimp_rgb_to_hsv (&scale->rgb, &scale->hsv);
@ -188,7 +190,7 @@ gimp_color_scale_size_allocate (GtkWidget *widget,
g_free (scale->buf);
scale->buf = g_new (guchar, scale->rowstride * scale->height);
gimp_color_scale_render (scale);
scale->needs_render = TRUE;
}
}
@ -250,6 +252,12 @@ gimp_color_scale_expose (GtkWidget *widget,
{
gboolean sensitive;
if (scale->needs_render)
{
gimp_color_scale_render (scale);
scale->needs_render = FALSE;
}
area.x += widget->allocation.x;
area.y += widget->allocation.y;
@ -390,7 +398,7 @@ gimp_color_scale_set_channel (GimpColorScale *scale,
{
scale->channel = channel;
gimp_color_scale_render (scale);
scale->needs_render = TRUE;
gtk_widget_queue_draw (GTK_WIDGET (scale));
}
}
@ -407,7 +415,7 @@ gimp_color_scale_set_color (GimpColorScale *scale,
scale->rgb = *rgb;
scale->hsv = *hsv;
gimp_color_scale_render (scale);
scale->needs_render = TRUE;
gtk_widget_queue_draw (GTK_WIDGET (scale));
}

2
libgimpwidgets/gimpcolorscale.h
View File

@ -57,6 +57,8 @@ struct _GimpColorScale
guint width;
guint height;
guint rowstride;
gboolean needs_render;
};
struct _GimpColorScaleClass