static void
gimp_view_renderer_gradient_render (GimpViewRenderer *renderer,
GtkWidget *widget)
{
GimpViewRendererGradient *rendergrad = GIMP_VIEW_RENDERER_GRADIENT (renderer);
GimpGradient *gradient = GIMP_GRADIENT (renderer->viewable);
GimpGradientSegment *seg = NULL;
GimpColorTransform *transform;
guchar *buf;
guchar *dest;
gint dest_stride;
gint x;
gint y;
gdouble dx, cur_x;
GimpRGB color;
buf = g_alloca (4 * renderer->width);
dx = (rendergrad->right - rendergrad->left) / (renderer->width - 1);
cur_x = rendergrad->left;
for (x = 0, dest = buf; x < renderer->width; x++, dest += 4)
{
guchar r, g, b, a;
seg = gimp_gradient_get_color_at (gradient, renderer->context, seg,
cur_x, rendergrad->reverse, &color);
cur_x += dx;
gimp_rgba_get_uchar (&color, &r, &g, &b, &a);
GIMP_CAIRO_ARGB32_SET_PIXEL (dest, r, g, b, a);
}
if (! renderer->surface)
renderer->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
renderer->width,
renderer->height);
cairo_surface_flush (renderer->surface);
dest = cairo_image_surface_get_data (renderer->surface);
dest_stride = cairo_image_surface_get_stride (renderer->surface);
transform = gimp_view_renderer_get_color_transform (renderer, widget,
babl_format ("cairo-ARGB32"),
babl_format ("cairo-ARGB32"));
if (transform)
gimp_color_transform_process_pixels (transform,
babl_format ("cairo-ARGB32"), buf,
babl_format ("cairo-ARGB32"), buf,
renderer->width);
for (y = 0; y < renderer->height; y++, dest += dest_stride)
{
memcpy (dest, buf, renderer->width * 4);
}
cairo_surface_mark_dirty (renderer->surface);
}
void
gradient_editor_load_right_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *seg;
GimpRGB color;
GimpGradientColor color_type = GIMP_GRADIENT_COLOR_FIXED;
gradient = GIMP_GRADIENT (data_editor->data);
switch (value)
{
case GRADIENT_EDITOR_COLOR_NEIGHBOR_ENDPOINT:
if (editor->control_sel_r->next != NULL)
seg = editor->control_sel_r->next;
else
seg = gimp_gradient_segment_get_first (editor->control_sel_r);
color = seg->left_color;
color_type = seg->left_color_type;
break;
case GRADIENT_EDITOR_COLOR_OTHER_ENDPOINT:
color = editor->control_sel_l->left_color;
color_type = editor->control_sel_l->left_color_type;
break;
case GRADIENT_EDITOR_COLOR_FOREGROUND:
gimp_context_get_foreground (data_editor->context, &color);
break;
case GRADIENT_EDITOR_COLOR_BACKGROUND:
gimp_context_get_background (data_editor->context, &color);
break;
default: /* Load a color */
color = editor->saved_colors[value - GRADIENT_EDITOR_COLOR_FIRST_CUSTOM];
break;
}
gimp_data_freeze (GIMP_DATA (gradient));
gimp_gradient_segment_range_blend (gradient,
editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&color,
TRUE, TRUE);
gimp_gradient_segment_set_right_color_type (gradient,
editor->control_sel_l,
color_type);
gimp_data_thaw (GIMP_DATA (gradient));
}
static void
gradient_preview_drop_gradient (GtkWidget *widget,
gint x,
gint y,
GimpViewable *viewable,
gpointer data)
{
GimpContext *context = GIMP_CONTEXT (data);
gimp_context_set_gradient (context, GIMP_GRADIENT (viewable));
}
void
gradient_editor_redistribute_cmd_callback (GtkAction *action,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
gimp_gradient_segment_range_redistribute_handles (gradient,
editor->control_sel_l,
editor->control_sel_r);
}
void
gradient_editor_save_right_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
gimp_gradient_segment_get_right_color (gradient, editor->control_sel_r,
&editor->saved_colors[value]);
}
void
gradient_editor_split_midpoint_cmd_callback (GtkAction *action,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (data);
GimpGradient *gradient = GIMP_GRADIENT (data_editor->data);
gimp_gradient_segment_range_split_midpoint (gradient,
data_editor->context,
editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l,
&editor->control_sel_r);
}
void
gradient_editor_blend_opacity_cmd_callback (GtkAction *action,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
gimp_gradient_segment_range_blend (gradient,
editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&editor->control_sel_r->right_color,
FALSE, TRUE);
}
static void
gradient_editor_right_color_update (GimpColorDialog *dialog,
const GimpRGB *color,
GimpColorDialogState state,
GimpGradientEditor *editor)
{
GimpGradient *gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
switch (state)
{
case GIMP_COLOR_DIALOG_UPDATE:
gimp_gradient_segment_range_blend (gradient,
editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
color,
TRUE, TRUE);
break;
case GIMP_COLOR_DIALOG_OK:
gimp_gradient_segment_range_blend (gradient,
editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
color,
TRUE, TRUE);
gimp_gradient_segments_free (editor->right_saved_segments);
gtk_widget_destroy (editor->color_dialog);
editor->color_dialog = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
break;
case GIMP_COLOR_DIALOG_CANCEL:
gradient_editor_replace_selection (editor, editor->right_saved_segments);
if (! editor->right_saved_dirty)
gimp_data_clean (GIMP_DATA (gradient));
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (gradient));
gtk_widget_destroy (editor->color_dialog);
editor->color_dialog = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
break;
}
}
static GimpGradient *
gimp_gradients_add_gradient (Gimp *gimp,
const gchar *name,
const gchar *id)
{
GimpGradient *gradient;
gradient = GIMP_GRADIENT (gimp_gradient_new (gimp_get_user_context (gimp),
name));
gimp_data_make_internal (GIMP_DATA (gradient), id);
gimp_container_add (gimp_data_factory_get_container (gimp->gradient_factory),
GIMP_OBJECT (gradient));
g_object_unref (gradient);
g_object_set_data (G_OBJECT (gimp), id, gradient);
return gradient;
}
static void
gradient_editor_replace_selection (GimpGradientEditor *editor,
GimpGradientSegment *replace_seg)
{
GimpGradient *gradient;
GimpGradientSegment *lseg, *rseg;
GimpGradientSegment *replace_last;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
/* Remember left and right segments */
lseg = editor->control_sel_l->prev;
rseg = editor->control_sel_r->next;
replace_last = gimp_gradient_segment_get_last (replace_seg);
/* Free old selection */
editor->control_sel_r->next = NULL;
gimp_gradient_segments_free (editor->control_sel_l);
/* Link in new segments */
if (lseg)
lseg->next = replace_seg;
else
gradient->segments = replace_seg;
replace_seg->prev = lseg;
if (rseg)
rseg->prev = replace_last;
replace_last->next = rseg;
editor->control_sel_l = replace_seg;
editor->control_sel_r = replace_last;
}
static void
gradient_editor_replicate_response (GtkWidget *widget,
gint response_id,
GimpGradientEditor *editor)
{
gtk_widget_destroy (widget);
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
if (response_id == GTK_RESPONSE_OK)
{
GimpGradient *gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
gimp_gradient_segment_range_replicate (gradient,
editor->control_sel_l,
editor->control_sel_r,
editor->replicate_times,
&editor->control_sel_l,
&editor->control_sel_r);
}
}
void
gradient_editor_left_color_cmd_callback (GtkAction *action,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
editor->left_saved_dirty = gimp_data_is_dirty (GIMP_DATA (gradient));
editor->left_saved_segments = gradient_editor_save_selection (editor);
editor->color_dialog =
gimp_color_dialog_new (GIMP_VIEWABLE (gradient),
GIMP_DATA_EDITOR (editor)->context,
_("Left Endpoint Color"),
GIMP_STOCK_GRADIENT,
_("Gradient Segment's Left Endpoint Color"),
GTK_WIDGET (editor),
gimp_dialog_factory_get_singleton (),
"gimp-gradient-editor-color-dialog",
&editor->control_sel_l->left_color,
TRUE, TRUE);
g_signal_connect (editor->color_dialog, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&editor->color_dialog);
g_signal_connect (editor->color_dialog, "update",
G_CALLBACK (gradient_editor_left_color_update),
editor);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
gimp_ui_manager_update (GIMP_EDITOR (editor)->ui_manager,
GIMP_EDITOR (editor)->popup_data);
gtk_window_present (GTK_WINDOW (editor->color_dialog));
}
void
gradient_editor_right_color_type_cmd_callback (GtkAction *action,
GtkAction *current,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
gint value;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
value = gtk_radio_action_get_current_value (GTK_RADIO_ACTION (action));
if (gradient && value >= 0)
{
GimpGradientColor color_type = value;
GimpRGB color;
gimp_gradient_get_color_at (gradient,
GIMP_DATA_EDITOR (editor)->context,
editor->control_sel_r,
editor->control_sel_r->right, FALSE,
&color);
gimp_data_freeze (GIMP_DATA (gradient));
gimp_gradient_segment_set_right_color_type (gradient,
editor->control_sel_r,
color_type);
if (color_type == GIMP_GRADIENT_COLOR_FIXED)
gimp_gradient_segment_set_right_color (gradient,
editor->control_sel_r,
&color);
gimp_data_thaw (GIMP_DATA (gradient));
}
}
static void
gimp_view_renderer_gradient_invalidate (GimpViewRenderer *renderer)
{
GimpViewRendererGradient *rendergrad;
gboolean has_fg_bg_segments = FALSE;
rendergrad = GIMP_VIEW_RENDERER_GRADIENT (renderer);
if (renderer->viewable)
has_fg_bg_segments =
gimp_gradient_has_fg_bg_segments (GIMP_GRADIENT (renderer->viewable));
if (rendergrad->has_fg_bg_segments != has_fg_bg_segments)
{
if (renderer->context)
{
if (rendergrad->has_fg_bg_segments)
{
g_signal_handlers_disconnect_by_func (renderer->context,
gimp_view_renderer_gradient_fg_bg_changed,
renderer);
}
else
{
g_signal_connect (renderer->context, "foreground-changed",
G_CALLBACK (gimp_view_renderer_gradient_fg_bg_changed),
renderer);
g_signal_connect (renderer->context, "background-changed",
G_CALLBACK (gimp_view_renderer_gradient_fg_bg_changed),
renderer);
}
}
rendergrad->has_fg_bg_segments = has_fg_bg_segments;
}
GIMP_VIEW_RENDERER_CLASS (parent_class)->invalidate (renderer);
}
void
gradient_editor_coloring_type_cmd_callback (GtkAction *action,
GtkAction *current,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
gint value;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
value = gtk_radio_action_get_current_value (GTK_RADIO_ACTION (action));
if (gradient && value >= 0)
{
GimpGradientSegmentColor color = value;
gimp_gradient_segment_range_set_coloring_type (gradient,
editor->control_sel_l,
editor->control_sel_r,
color);
}
}
gboolean
gimp_gradient_save (GimpData *data,
GError **error)
{
GimpGradient *gradient = GIMP_GRADIENT (data);
GimpGradientSegment *seg;
gint num_segments;
FILE *file;
file = g_fopen (data->filename, "wb");
if (! file)
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_OPEN,
_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (data->filename),
g_strerror (errno));
return FALSE;
}
/* File format is:
*
* GIMP Gradient
* Name: name
* number_of_segments
* left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring left_color_type
* left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring right_color_type
* ...
*/
fprintf (file, "GIMP Gradient\n");
fprintf (file, "Name: %s\n", GIMP_OBJECT (gradient)->name);
/* Count number of segments */
num_segments = 0;
seg = gradient->segments;
while (seg)
{
num_segments++;
seg = seg->next;
}
/* Write rest of file */
fprintf (file, "%d\n", num_segments);
for (seg = gradient->segments; seg; seg = seg->next)
{
gchar buf[11][G_ASCII_DTOSTR_BUF_SIZE];
g_ascii_formatd (buf[0], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left);
g_ascii_formatd (buf[1], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->middle);
g_ascii_formatd (buf[2], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right);
g_ascii_formatd (buf[3], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.r);
g_ascii_formatd (buf[4], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.g);
g_ascii_formatd (buf[5], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.b);
g_ascii_formatd (buf[6], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.a);
g_ascii_formatd (buf[7], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.r);
g_ascii_formatd (buf[8], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.g);
g_ascii_formatd (buf[9], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.b);
g_ascii_formatd (buf[10], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.a);
fprintf (file, "%s %s %s %s %s %s %s %s %s %s %s %d %d %d %d\n",
buf[0], buf[1], buf[2], /* left, middle, right */
buf[3], buf[4], buf[5], buf[6], /* left color */
buf[7], buf[8], buf[9], buf[10], /* right color */
(gint) seg->type,
(gint) seg->color,
(gint) seg->left_color_type,
(gint) seg->right_color_type);
}
fclose (file);
return TRUE;
}
gboolean
gimp_gradient_save (GimpData *data,
GOutputStream *output,
GError **error)
{
GimpGradient *gradient = GIMP_GRADIENT (data);
GString *string;
GimpGradientSegment *seg;
gint num_segments;
/* File format is:
*
* GIMP Gradient
* Name: name
* number_of_segments
* left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring left_color_type
* left middle right r0 g0 b0 a0 r1 g1 b1 a1 type coloring right_color_type
* ...
*/
string = g_string_new ("GIMP Gradient\n");
g_string_append_printf (string, "Name: %s\n",
gimp_object_get_name (gradient));
/* Count number of segments */
num_segments = 0;
seg = gradient->segments;
while (seg)
{
num_segments++;
seg = seg->next;
}
/* Write rest of file */
g_string_append_printf (string, "%d\n", num_segments);
for (seg = gradient->segments; seg; seg = seg->next)
{
gchar buf[11][G_ASCII_DTOSTR_BUF_SIZE];
g_ascii_formatd (buf[0], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left);
g_ascii_formatd (buf[1], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->middle);
g_ascii_formatd (buf[2], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right);
g_ascii_formatd (buf[3], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.r);
g_ascii_formatd (buf[4], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.g);
g_ascii_formatd (buf[5], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.b);
g_ascii_formatd (buf[6], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->left_color.a);
g_ascii_formatd (buf[7], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.r);
g_ascii_formatd (buf[8], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.g);
g_ascii_formatd (buf[9], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.b);
g_ascii_formatd (buf[10], G_ASCII_DTOSTR_BUF_SIZE,
"%f", seg->right_color.a);
g_string_append_printf (string,
"%s %s %s %s %s %s %s %s %s %s %s %d %d %d %d\n",
buf[0], buf[1], buf[2], /* left, middle, right */
buf[3], buf[4], buf[5], buf[6], /* left color */
buf[7], buf[8], buf[9], buf[10], /* right color */
(gint) seg->type,
(gint) seg->color,
(gint) seg->left_color_type,
(gint) seg->right_color_type);
}
if (! g_output_stream_write_all (output, string->str, string->len,
NULL, NULL, error))
{
g_string_free (string, TRUE);
return FALSE;
}
g_string_free (string, TRUE);
return TRUE;
}
