static void
gimp_levels_tool_color_picked (GimpColorTool *color_tool,
GimpColorPickState pick_state,
GimpImageType sample_type,
GimpRGB *color,
gint color_index)
{
GimpLevelsTool *tool = GIMP_LEVELS_TOOL (color_tool);
guchar col[5];
guint value;
gimp_rgba_get_uchar (color,
col + RED_PIX,
col + GREEN_PIX,
col + BLUE_PIX,
col + ALPHA_PIX);
value = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (tool->active_picker),
"pick_value"));
if (value & ALL_CHANNELS && GIMP_IMAGE_TYPE_IS_RGB (sample_type))
{
GimpHistogramChannel channel;
/* first reset the value channel */
switch (value & 0xF)
{
case LOW_INPUT:
tool->levels->low_input[GIMP_HISTOGRAM_VALUE] = 0;
break;
case GAMMA:
tool->levels->gamma[GIMP_HISTOGRAM_VALUE] = 1.0;
break;
case HIGH_INPUT:
tool->levels->high_input[GIMP_HISTOGRAM_VALUE] = 255;
break;
default:
break;
}
/* then adjust all color channels */
for (channel = GIMP_HISTOGRAM_RED;
channel <= GIMP_HISTOGRAM_BLUE;
channel++)
{
levels_input_adjust_by_color (tool->levels,
value, channel, col);
}
}
else
{
levels_input_adjust_by_color (tool->levels,
value, tool->channel, col);
}
levels_update (tool, ALL);
gimp_image_map_tool_preview (GIMP_IMAGE_MAP_TOOL (tool));
}
void
drawable_actions_update (GimpActionGroup *group,
gpointer data)
{
GimpImage *image;
GimpDrawable *drawable = NULL;
gboolean is_rgb = FALSE;
gboolean is_gray = FALSE;
gboolean is_indexed = FALSE;
gboolean visible = FALSE;
gboolean linked = FALSE;
gboolean locked = FALSE;
gboolean can_lock = FALSE;
gboolean writable = FALSE;
gboolean children = FALSE;
image = action_data_get_image (data);
if (image)
{
drawable = gimp_image_get_active_drawable (image);
if (drawable)
{
GimpImageType drawable_type = gimp_drawable_type (drawable);
GimpItem *item;
is_rgb = GIMP_IMAGE_TYPE_IS_RGB (drawable_type);
is_gray = GIMP_IMAGE_TYPE_IS_GRAY (drawable_type);
is_indexed = GIMP_IMAGE_TYPE_IS_INDEXED (drawable_type);
if (GIMP_IS_LAYER_MASK (drawable))
item = GIMP_ITEM (gimp_layer_mask_get_layer (GIMP_LAYER_MASK (drawable)));
else
item = GIMP_ITEM (drawable);
visible = gimp_item_get_visible (item);
linked = gimp_item_get_linked (item);
locked = gimp_item_get_lock_content (item);
can_lock = gimp_item_can_lock_content (item);
writable = ! gimp_item_is_content_locked (item);
if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)))
children = TRUE;
}
}
#define SET_SENSITIVE(action,condition) \
gimp_action_group_set_action_sensitive (group, action, (condition) != 0)
#define SET_ACTIVE(action,condition) \
gimp_action_group_set_action_active (group, action, (condition) != 0)
SET_SENSITIVE ("drawable-equalize", writable && !children && !is_indexed);
SET_SENSITIVE ("drawable-invert", writable && !children && !is_indexed);
SET_SENSITIVE ("drawable-levels-stretch", writable && !children && is_rgb);
SET_SENSITIVE ("drawable-offset", writable && !children);
SET_SENSITIVE ("drawable-visible", drawable);
SET_SENSITIVE ("drawable-linked", drawable);
SET_SENSITIVE ("drawable-lock-content", can_lock);
SET_ACTIVE ("drawable-visible", visible);
SET_ACTIVE ("drawable-linked", linked);
SET_ACTIVE ("drawable-lock-content", locked);
SET_SENSITIVE ("drawable-flip-horizontal", writable);
SET_SENSITIVE ("drawable-flip-vertical", writable);
SET_SENSITIVE ("drawable-rotate-90", writable);
SET_SENSITIVE ("drawable-rotate-180", writable);
SET_SENSITIVE ("drawable-rotate-270", writable);
#undef SET_SENSITIVE
#undef SET_ACTIVE
}
static void
gimp_brush_clipboard_buffer_changed (Gimp *gimp,
GimpBrush *brush)
{
gint width;
gint height;
if (brush->mask)
{
temp_buf_free (brush->mask);
brush->mask = NULL;
}
if (brush->pixmap)
{
temp_buf_free (brush->pixmap);
brush->pixmap = NULL;
}
if (gimp->global_buffer)
{
TileManager *tiles = gimp_buffer_get_tiles (gimp->global_buffer);
GimpImageType type = gimp_buffer_get_image_type (gimp->global_buffer);
width = MIN (gimp_buffer_get_width (gimp->global_buffer), 1024);
height = MIN (gimp_buffer_get_height (gimp->global_buffer), 1024);
brush->mask = temp_buf_new (width, height, 1, 0, 0, NULL);
brush->pixmap = temp_buf_new (width, height, 3, 0, 0, NULL);
/* copy the alpha channel into the brush's mask */
if (GIMP_IMAGE_TYPE_HAS_ALPHA (type))
{
PixelRegion bufferPR;
PixelRegion maskPR;
pixel_region_init (&bufferPR, tiles,
0, 0, width, height, FALSE);
pixel_region_init_temp_buf (&maskPR, brush->mask,
0, 0, width, height);
extract_alpha_region (&bufferPR, NULL, &maskPR);
}
else
{
PixelRegion maskPR;
guchar opaque = OPAQUE_OPACITY;
pixel_region_init_temp_buf (&maskPR, brush->mask,
0, 0, width, height);
color_region (&maskPR, &opaque);
}
/* copy the color channels into the brush's pixmap */
if (GIMP_IMAGE_TYPE_IS_RGB (type))
{
PixelRegion bufferPR;
PixelRegion pixmapPR;
pixel_region_init (&bufferPR, tiles,
0, 0, width, height, FALSE);
pixel_region_init_temp_buf (&pixmapPR, brush->pixmap,
0, 0, width, height);
if (GIMP_IMAGE_TYPE_HAS_ALPHA (type))
copy_color (&bufferPR, &pixmapPR);
else
copy_region (&bufferPR, &pixmapPR);
}
else
{
PixelRegion bufferPR;
PixelRegion tempPR;
TempBuf *temp = temp_buf_new (width, height, 1, 0, 0, NULL);
pixel_region_init (&bufferPR, tiles,
0, 0, width, height, FALSE);
pixel_region_init_temp_buf (&tempPR, temp,
0, 0, width, height);
if (GIMP_IMAGE_TYPE_HAS_ALPHA (type))
copy_component (&bufferPR, &tempPR, 0);
else
copy_region (&bufferPR, &tempPR);
temp_buf_copy (temp, brush->pixmap);
temp_buf_free (temp);
}
}
else
{
guchar color = 0;
width = 17;
height = 17;
brush->mask = temp_buf_new (width, height, 1, 0, 0, &color);
}
brush->x_axis.x = width / 2;
brush->x_axis.y = 0;
brush->y_axis.x = 0;
brush->y_axis.y = height / 2;
gimp_data_dirty (GIMP_DATA (brush));
}
