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continuously show the (original) image during a scrollbar movement. This

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* plug-ins/common/unsharp.c: continuously show the (original) image
  during a scrollbar movement.  This makes it easier to navigate.
This commit is contained in:
David Odin 2004-08-09 19:10:31 +00:00
parent 88768c66f8
commit a3d5f6408d
2 changed files with 58 additions and 17 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2004-08-09 DindinX <david@dindinx.org>
* plug-ins/common/unsharp.c: continuously show the (original) image
during a scrollbar movement. This makes it easier to navigate.
2004-08-09 Michael Natterer <mitch@gimp.org>
Applied (slightly modified) patch from Shlomi Fish which adds a

70
plug-ins/common/unsharp.c
View file

@ -103,7 +103,10 @@ static void unsharp_mask (GimpDrawable *drawable,
static gboolean unsharp_mask_dialog (void);
static void preview_update (void);
static void preview_move (void);
static void preview_update_real (gboolean apply_effect);
static void preview_toggle_callback (GtkWidget *toggle);
static gboolean preview_button_release (void);
/* create a few globals, set default values */
@ -690,14 +693,16 @@ unsharp_preview_new (void)
G_CALLBACK (gimp_int_adjustment_update),
&delta_x);
g_signal_connect (adj, "value_changed",
G_CALLBACK (preview_update),
G_CALLBACK (preview_move),
NULL);
scrollbar = gtk_hscrollbar_new (GTK_ADJUSTMENT (adj));
gtk_range_set_update_policy (GTK_RANGE (scrollbar),
GTK_UPDATE_DISCONTINUOUS);
GTK_UPDATE_CONTINUOUS);
gtk_table_attach (GTK_TABLE (table), scrollbar, 0, 1, 1, 2,
GTK_FILL, 0, 0, 0);
gtk_widget_show (scrollbar);
g_signal_connect (scrollbar, "button_release_event",
G_CALLBACK (preview_button_release), NULL);
adj = gtk_adjustment_new (0, 0, sel_height - 1, 1.0,
MIN (preview_height, sel_height),
@ -707,15 +712,17 @@ unsharp_preview_new (void)
G_CALLBACK (gimp_int_adjustment_update),
&delta_y);
g_signal_connect (adj, "value_changed",
G_CALLBACK (preview_update),
G_CALLBACK (preview_move),
NULL);
scrollbar = gtk_vscrollbar_new (GTK_ADJUSTMENT (adj));
gtk_range_set_update_policy (GTK_RANGE (scrollbar),
GTK_UPDATE_DISCONTINUOUS);
GTK_UPDATE_CONTINUOUS);
gtk_table_attach (GTK_TABLE (table), scrollbar, 1, 2, 0, 1,
0, GTK_FILL, 0, 0);
gtk_widget_show (scrollbar);
g_signal_connect (scrollbar, "button_release_event",
G_CALLBACK (preview_button_release), NULL);
preview_toggle = gtk_check_button_new_with_mnemonic (_("_Preview"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (preview_toggle),
@ -846,7 +853,7 @@ preview_toggle_callback (GtkWidget *toggle)
}
static void
preview_update (void)
preview_update_real (gboolean apply_effect)
{
/* drawable */
glong width, height;
@ -908,20 +915,29 @@ preview_update (void)
gimp_pixel_rgn_init (&srcPR, drawable,
preview_buf_x1,preview_buf_y1,
preview_buf_width, preview_buf_height, FALSE, FALSE);
gimp_pixel_rgn_init (&destPR, drawable,
preview_buf_x1,preview_buf_y1,
preview_buf_width, preview_buf_height, TRUE, TRUE);
/* render image */
unsharp_region (srcPR, destPR, preview_buf_width, preview_buf_height, bytes,
unsharp_params.radius, unsharp_params.amount,
preview_buf_x1, preview_buf_x2, preview_buf_y1, preview_buf_y2);
render_buffer = g_new (guchar, preview_buf_width * preview_buf_height * bytes);
if (apply_effect)
{
/* render image */
gimp_pixel_rgn_init (&destPR, drawable,
preview_buf_x1,preview_buf_y1,
preview_buf_width, preview_buf_height, TRUE, TRUE);
gimp_pixel_rgn_get_rect(&destPR, render_buffer,
preview_buf_x1, preview_buf_y1,
preview_buf_width, preview_buf_height);
unsharp_region (srcPR, destPR, preview_buf_width, preview_buf_height, bytes,
unsharp_params.radius, unsharp_params.amount,
preview_buf_x1, preview_buf_x2, preview_buf_y1, preview_buf_y2);
gimp_pixel_rgn_get_rect(&destPR, render_buffer,
preview_buf_x1, preview_buf_y1,
preview_buf_width, preview_buf_height);
}
else
{
gimp_pixel_rgn_get_rect(&srcPR, render_buffer,
preview_buf_x1, preview_buf_y1,
preview_buf_width, preview_buf_height);
}
/*
* Draw the preview image on the screen...
@ -942,3 +958,23 @@ preview_update (void)
g_free (render_buffer);
}
static void
preview_update (void)
{
preview_update_real (TRUE);
}
static void
preview_move (void)
{
preview_update_real (FALSE);
}
static gboolean
preview_button_release (void)
{
preview_update_real (TRUE);
return FALSE;
}