gdouble
gimp_paint_options_get_dynamic_color (GimpPaintOptions *paint_options,
const GimpCoords *coords)
{
gdouble color = 1.0;
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), 1.0);
g_return_val_if_fail (coords != NULL, 1.0);
if (paint_options->pressure_options->color ||
paint_options->velocity_options->color ||
paint_options->random_options->color)
{
gdouble pressure = -1.0;
gdouble velocity = -1.0;
gdouble random = -1.0;
if (paint_options->pressure_options->color)
pressure = GIMP_PAINT_PRESSURE_SCALE * coords->pressure;
if (paint_options->velocity_options->color)
velocity = GIMP_PAINT_VELOCITY_SCALE * coords->velocity;
if (paint_options->random_options->color)
random = g_random_double_range (0.0, 1.0);
color = gimp_paint_options_get_dynamics_mix (pressure,
paint_options->pressure_options->prescale,
velocity,
paint_options->velocity_options->prescale,
random,
paint_options->random_options->prescale);
}
return color;
}
GimpBrushApplicationMode
gimp_paint_options_get_brush_mode (GimpPaintOptions *paint_options)
{
GimpDynamics *dynamics;
GimpDynamicsOutput *force_output;
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), GIMP_BRUSH_SOFT);
if (paint_options->hard)
return GIMP_BRUSH_HARD;
dynamics = gimp_context_get_dynamics (GIMP_CONTEXT (paint_options));
force_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE);
if (!force_output)
return GIMP_BRUSH_SOFT;
if (gimp_dynamics_output_is_enabled (force_output))
return GIMP_BRUSH_PRESSURE;
return GIMP_BRUSH_SOFT;
}
gboolean
gimp_paint_core_start (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords,
GError **error)
{
GimpImage *image;
GimpItem *item;
GimpChannel *mask;
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
g_return_val_if_fail (coords != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
item = GIMP_ITEM (drawable);
image = gimp_item_get_image (item);
if (core->stroke_buffer)
{
g_array_free (core->stroke_buffer, TRUE);
core->stroke_buffer = NULL;
}
core->stroke_buffer = g_array_sized_new (TRUE, TRUE,
sizeof (GimpCoords),
STROKE_BUFFER_INIT_SIZE);
/* remember the last stroke's endpoint for later undo */
core->start_coords = core->last_coords;
core->cur_coords = *coords;
if (! GIMP_PAINT_CORE_GET_CLASS (core)->start (core, drawable,
paint_options,
coords, error))
{
return FALSE;
}
/* Allocate the undo structure */
if (core->undo_buffer)
g_object_unref (core->undo_buffer);
core->undo_buffer = gegl_buffer_dup (gimp_drawable_get_buffer (drawable));
/* Allocate the saved proj structure */
if (core->saved_proj_buffer)
{
g_object_unref (core->saved_proj_buffer);
core->saved_proj_buffer = NULL;
}
if (core->use_saved_proj)
{
GeglBuffer *buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (image));
core->saved_proj_buffer = gegl_buffer_dup (buffer);
}
/* Allocate the canvas blocks structure */
if (core->canvas_buffer)
g_object_unref (core->canvas_buffer);
core->canvas_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
babl_format ("Y float"));
/* Get the initial undo extents */
core->x1 = core->x2 = core->cur_coords.x;
core->y1 = core->y2 = core->cur_coords.y;
core->last_paint.x = -1e6;
core->last_paint.y = -1e6;
mask = gimp_image_get_mask (image);
/* don't apply the mask to itself and don't apply an empty mask */
if (GIMP_DRAWABLE (mask) != drawable && ! gimp_channel_is_empty (mask))
{
GeglBuffer *mask_buffer;
gint offset_x;
gint offset_y;
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
gimp_item_get_offset (item, &offset_x, &offset_y);
core->mask_buffer = g_object_ref (mask_buffer);
core->mask_x_offset = -offset_x;
core->mask_y_offset = -offset_y;
}
else
{
core->mask_buffer = NULL;
}
core->linear_mode = gimp_drawable_get_linear (drawable);
if (paint_options->use_applicator)
{
core->applicator = gimp_applicator_new (NULL, core->linear_mode);
if (core->mask_buffer)
{
gimp_applicator_set_mask_buffer (core->applicator,
core->mask_buffer);
gimp_applicator_set_mask_offset (core->applicator,
core->mask_x_offset,
core->mask_y_offset);
}
gimp_applicator_set_affect (core->applicator,
gimp_drawable_get_active_mask (drawable));
gimp_applicator_set_dest_buffer (core->applicator,
gimp_drawable_get_buffer (drawable));
}
else
{
if (core->comp_buffer)
{
g_object_unref (core->comp_buffer);
core->comp_buffer = NULL;
}
/* Allocate the scratch buffer if there's a component mask */
if (gimp_drawable_get_active_mask (drawable) != GIMP_COMPONENT_ALL)
{
const Babl *format;
if (core->linear_mode)
format = babl_format ("RGBA float");
else
format = babl_format ("R'G'B'A float");
core->comp_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
format);
}
}
/* Freeze the drawable preview so that it isn't constantly updated. */
gimp_viewable_preview_freeze (GIMP_VIEWABLE (drawable));
return TRUE;
}
gdouble
gimp_paint_options_get_fade (GimpPaintOptions *paint_options,
GimpImage *image,
gdouble pixel_dist)
{
GimpFadeOptions *fade_options;
gdouble z = -1.0;
gdouble fade_out = 0.0;
gdouble unit_factor;
gdouble pos;
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options),
DYNAMIC_MAX_VALUE);
g_return_val_if_fail (GIMP_IS_IMAGE (image), DYNAMIC_MAX_VALUE);
fade_options = paint_options->fade_options;
switch (fade_options->fade_unit)
{
case GIMP_UNIT_PIXEL:
fade_out = fade_options->fade_length;
break;
case GIMP_UNIT_PERCENT:
fade_out = (MAX (gimp_image_get_width (image),
gimp_image_get_height (image)) *
fade_options->fade_length / 100);
break;
default:
{
gdouble xres;
gdouble yres;
gimp_image_get_resolution (image, &xres, &yres);
unit_factor = gimp_unit_get_factor (fade_options->fade_unit);
fade_out = (fade_options->fade_length *
MAX (xres, yres) / unit_factor);
}
break;
}
/* factor in the fade out value */
if (fade_out > 0.0)
{
pos = pixel_dist / fade_out;
}
else
pos = DYNAMIC_MAX_VALUE;
/* for no repeat, set pos close to 1.0 after the first chunk */
if (fade_options->fade_repeat == GIMP_REPEAT_NONE && pos >= DYNAMIC_MAX_VALUE)
pos = DYNAMIC_MAX_VALUE - 0.0000001;
if (((gint) pos & 1) &&
fade_options->fade_repeat != GIMP_REPEAT_SAWTOOTH)
pos = DYNAMIC_MAX_VALUE - (pos - (gint) pos);
else
pos = pos - (gint) pos;
z = pos;
if (fade_options->fade_reverse)
z = 1.0 - z;
return z; /* ln (1/255) */
}
gboolean
gimp_paint_options_get_gradient_color (GimpPaintOptions *paint_options,
GimpImage *image,
gdouble grad_point,
gdouble pixel_dist,
GimpRGB *color)
{
GimpGradientOptions *gradient_options;
GimpGradient *gradient;
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
g_return_val_if_fail (color != NULL, FALSE);
gradient_options = paint_options->gradient_options;
gradient = gimp_context_get_gradient (GIMP_CONTEXT (paint_options));
if (paint_options->pressure_options->color ||
paint_options->velocity_options->color ||
paint_options->random_options->color)
{
gimp_gradient_get_color_at (gradient, GIMP_CONTEXT (paint_options),
NULL, grad_point,
gradient_options->gradient_reverse,
color);
return TRUE;
}
else if (gradient_options->use_gradient)
{
gdouble gradient_length = 0.0;
gdouble unit_factor;
gdouble pos;
switch (gradient_options->gradient_unit)
{
case GIMP_UNIT_PIXEL:
gradient_length = gradient_options->gradient_length;
break;
case GIMP_UNIT_PERCENT:
gradient_length = (MAX (gimp_image_get_width (image),
gimp_image_get_height (image)) *
gradient_options->gradient_length / 100);
break;
default:
{
gdouble xres;
gdouble yres;
gimp_image_get_resolution (image, &xres, &yres);
unit_factor = gimp_unit_get_factor (gradient_options->gradient_unit);
gradient_length = (gradient_options->gradient_length *
MAX (xres, yres) / unit_factor);
}
break;
}
if (gradient_length > 0.0)
pos = pixel_dist / gradient_length;
else
pos = 1.0;
/* for no repeat, set pos close to 1.0 after the first chunk */
if (gradient_options->gradient_repeat == GIMP_REPEAT_NONE && pos >= 1.0)
pos = 0.9999999;
if (((gint) pos & 1) &&
gradient_options->gradient_repeat != GIMP_REPEAT_SAWTOOTH)
pos = 1.0 - (pos - (gint) pos);
else
pos = pos - (gint) pos;
gimp_gradient_get_color_at (gradient, GIMP_CONTEXT (paint_options),
NULL, pos,
gradient_options->gradient_reverse,
color);
return TRUE;
}
return FALSE;
}
gboolean
gimp_paint_core_start (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords,
GError **error)
{
GimpItem *item;
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
g_return_val_if_fail (coords != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
item = GIMP_ITEM (drawable);
if (core->stroke_buffer)
{
g_array_free (core->stroke_buffer, TRUE);
core->stroke_buffer = NULL;
}
core->stroke_buffer = g_array_sized_new (TRUE, TRUE,
sizeof (GimpCoords),
STROKE_BUFFER_INIT_SIZE);
core->cur_coords = *coords;
if (! GIMP_PAINT_CORE_GET_CLASS (core)->start (core, drawable,
paint_options,
coords, error))
{
return FALSE;
}
/* Allocate the undo structure */
if (core->undo_buffer)
g_object_unref (core->undo_buffer);
core->undo_buffer = gegl_buffer_dup (gimp_drawable_get_buffer (drawable));
/* Allocate the saved proj structure */
if (core->saved_proj_buffer)
{
g_object_unref (core->saved_proj_buffer);
core->saved_proj_buffer = NULL;
}
if (core->use_saved_proj)
{
GimpImage *image = gimp_item_get_image (item);
GimpPickable *pickable = GIMP_PICKABLE (gimp_image_get_projection (image));
GeglBuffer *buffer = gimp_pickable_get_buffer (pickable);
core->saved_proj_buffer = gegl_buffer_dup (buffer);
}
/* Allocate the canvas blocks structure */
if (core->canvas_buffer)
g_object_unref (core->canvas_buffer);
core->canvas_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
babl_format ("Y u8"));
/* Get the initial undo extents */
core->x1 = core->x2 = core->cur_coords.x;
core->y1 = core->y2 = core->cur_coords.y;
core->last_paint.x = -1e6;
core->last_paint.y = -1e6;
{
GimpImage *image;
GimpChannel *mask;
GeglBuffer *mask_buffer = NULL;
gint offset_x = 0;
gint offset_y = 0;
image = gimp_item_get_image (item);
mask = gimp_image_get_mask (image);
/* don't apply the mask to itself and don't apply an empty mask */
if (GIMP_DRAWABLE (mask) == drawable || gimp_channel_is_empty (mask))
mask = NULL;
if (mask)
{
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
gimp_item_get_offset (item, &offset_x, &offset_y);
}
core->applicator =
gimp_applicator_new (gimp_drawable_get_buffer (drawable),
gimp_drawable_get_active_mask (drawable),
mask_buffer,
-offset_x, -offset_y);
}
/* Freeze the drawable preview so that it isn't constantly updated. */
gimp_viewable_preview_freeze (GIMP_VIEWABLE (drawable));
return TRUE;
}
static void
tool_manager_preset_changed (GimpContext *user_context,
GimpToolPreset *preset,
GimpToolManager *tool_manager)
{
GimpToolInfo *preset_tool;
gchar *options_name;
gboolean tool_change = FALSE;
if (! preset || user_context->gimp->busy)
return;
preset_tool = gimp_context_get_tool (GIMP_CONTEXT (preset->tool_options));
if (preset_tool != gimp_context_get_tool (user_context))
tool_change = TRUE;
if (! tool_change)
tool_manager_disconnect_options (tool_manager, user_context, preset_tool);
/* save the name, we don't want to overwrite it */
options_name = g_strdup (gimp_object_get_name (preset_tool->tool_options));
gimp_config_copy (GIMP_CONFIG (preset->tool_options),
GIMP_CONFIG (preset_tool->tool_options), 0);
/* restore the saved name */
gimp_object_take_name (GIMP_OBJECT (preset_tool->tool_options), options_name);
if (tool_change)
gimp_context_set_tool (user_context, preset_tool);
else
tool_manager_connect_options (tool_manager, user_context, preset_tool);
gimp_context_copy_properties (GIMP_CONTEXT (preset->tool_options),
user_context,
gimp_tool_preset_get_prop_mask (preset));
if (GIMP_IS_PAINT_OPTIONS (preset->tool_options))
{
GimpCoreConfig *config = user_context->gimp->config;
GimpToolOptions *src = preset->tool_options;
GimpToolOptions *dest = tool_manager->active_tool->tool_info->tool_options;
/* if connect_options() did overwrite the brush options and the
* preset contains a brush, use the brush options from the
* preset
*/
if (config->global_brush && preset->use_brush)
gimp_paint_options_copy_brush_props (GIMP_PAINT_OPTIONS (src),
GIMP_PAINT_OPTIONS (dest));
if (config->global_dynamics && preset->use_dynamics)
gimp_paint_options_copy_dynamics_props (GIMP_PAINT_OPTIONS (src),
GIMP_PAINT_OPTIONS (dest));
if (config->global_gradient && preset->use_gradient)
gimp_paint_options_copy_gradient_props (GIMP_PAINT_OPTIONS (src),
GIMP_PAINT_OPTIONS (dest));
}
}
gboolean
gimp_paint_core_stroke_boundary (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
gboolean emulate_dynamics,
const GimpBoundSeg *bound_segs,
gint n_bound_segs,
gint offset_x,
gint offset_y,
gboolean push_undo,
GError **error)
{
GimpBoundSeg *stroke_segs;
gint n_stroke_segs;
gint off_x;
gint off_y;
GimpCoords *coords;
gboolean initialized = FALSE;
gint n_coords;
gint seg;
gint s;
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
g_return_val_if_fail (bound_segs != NULL && n_bound_segs > 0, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
stroke_segs = gimp_boundary_sort (bound_segs, n_bound_segs,
&n_stroke_segs);
if (n_stroke_segs == 0)
return TRUE;
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
off_x -= offset_x;
off_y -= offset_y;
coords = g_new0 (GimpCoords, n_bound_segs + 4);
seg = 0;
n_coords = 0;
/* we offset all coordinates by 0.5 to align the brush with the path */
coords[n_coords] = default_coords;
coords[n_coords].x = (gdouble) (stroke_segs[0].x1 - off_x + 0.5);
coords[n_coords].y = (gdouble) (stroke_segs[0].y1 - off_y + 0.5);
n_coords++;
for (s = 0; s < n_stroke_segs; s++)
{
while (stroke_segs[seg].x1 != -1 ||
stroke_segs[seg].x2 != -1 ||
stroke_segs[seg].y1 != -1 ||
stroke_segs[seg].y2 != -1)
{
coords[n_coords] = default_coords;
coords[n_coords].x = (gdouble) (stroke_segs[seg].x1 - off_x + 0.5);
coords[n_coords].y = (gdouble) (stroke_segs[seg].y1 - off_y + 0.5);
n_coords++;
seg++;
}
/* Close the stroke points up */
coords[n_coords] = coords[0];
n_coords++;
if (emulate_dynamics)
gimp_paint_core_stroke_emulate_dynamics (coords, n_coords);
if (initialized ||
gimp_paint_core_start (core, drawable, paint_options, &coords[0],
error))
{
gint i;
initialized = TRUE;
core->cur_coords = coords[0];
core->last_coords = coords[0];
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_INIT, 0);
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_MOTION, 0);
for (i = 1; i < n_coords; i++)
{
gimp_paint_core_interpolate (core, drawable, paint_options,
&coords[i], 0);
}
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_FINISH, 0);
}
else
{
break;
}
n_coords = 0;
seg++;
coords[n_coords] = default_coords;
coords[n_coords].x = (gdouble) (stroke_segs[seg].x1 - off_x + 0.5);
coords[n_coords].y = (gdouble) (stroke_segs[seg].y1 - off_y + 0.5);
n_coords++;
}
if (initialized)
{
gimp_paint_core_finish (core, drawable, push_undo);
gimp_paint_core_cleanup (core);
}
g_free (coords);
g_free (stroke_segs);
return initialized;
}
gboolean
gimp_paint_core_stroke_vectors (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
gboolean emulate_dynamics,
GimpVectors *vectors,
gboolean push_undo,
GError **error)
{
GList *stroke;
gboolean initialized = FALSE;
gboolean due_to_lack_of_points = FALSE;
gint off_x, off_y;
gint vectors_off_x, vectors_off_y;
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
gimp_item_get_offset (GIMP_ITEM (vectors), &vectors_off_x, &vectors_off_y);
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
off_x -= vectors_off_x;
off_y -= vectors_off_y;
for (stroke = vectors->strokes; stroke; stroke = stroke->next)
{
GArray *coords;
gboolean closed;
coords = gimp_stroke_interpolate (GIMP_STROKE (stroke->data),
1.0, &closed);
if (coords && coords->len)
{
gint i;
for (i = 0; i < coords->len; i++)
{
g_array_index (coords, GimpCoords, i).x -= off_x;
g_array_index (coords, GimpCoords, i).y -= off_y;
}
if (emulate_dynamics)
gimp_paint_core_stroke_emulate_dynamics ((GimpCoords *) coords->data,
coords->len);
if (initialized ||
gimp_paint_core_start (core, drawable, paint_options,
&g_array_index (coords, GimpCoords, 0),
error))
{
initialized = TRUE;
core->cur_coords = g_array_index (coords, GimpCoords, 0);
core->last_coords = g_array_index (coords, GimpCoords, 0);
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_INIT, 0);
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_MOTION, 0);
for (i = 1; i < coords->len; i++)
{
gimp_paint_core_interpolate (core, drawable, paint_options,
&g_array_index (coords, GimpCoords, i),
0);
}
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_FINISH, 0);
}
else
{
if (coords)
g_array_free (coords, TRUE);
break;
}
}
else
{
due_to_lack_of_points = TRUE;
}
if (coords)
g_array_free (coords, TRUE);
}
if (initialized)
{
gimp_paint_core_finish (core, drawable, push_undo);
gimp_paint_core_cleanup (core);
}
if (! initialized && due_to_lack_of_points && *error == NULL)
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Not enough points to stroke"));
}
return initialized;
}
static void
tool_manager_preset_changed (GimpContext *user_context,
GimpToolPreset *preset,
GimpToolManager *tool_manager)
{
GimpToolInfo *preset_tool;
gchar *options_name;
gboolean tool_change = FALSE;
if (! preset || user_context->gimp->busy)
return;
preset_tool = gimp_context_get_tool (GIMP_CONTEXT (preset->tool_options));
if (preset_tool != gimp_context_get_tool (user_context))
tool_change = TRUE;
if (! tool_change)
tool_manager_disconnect_options (tool_manager, user_context, preset_tool);
/* save the name, we don't want to overwrite it */
options_name = g_strdup (gimp_object_get_name (preset_tool->tool_options));
gimp_config_copy (GIMP_CONFIG (preset->tool_options),
GIMP_CONFIG (preset_tool->tool_options), 0);
/* restore the saved name */
gimp_object_take_name (GIMP_OBJECT (preset_tool->tool_options), options_name);
if (tool_change)
gimp_context_set_tool (user_context, preset_tool);
else
tool_manager_connect_options (tool_manager, user_context, preset_tool);
gimp_context_copy_properties (GIMP_CONTEXT (preset->tool_options),
user_context,
gimp_tool_preset_get_prop_mask (preset));
if (GIMP_IS_PAINT_OPTIONS (preset->tool_options))
{
GimpToolOptions *src = preset->tool_options;
GimpToolOptions *dest = tool_manager->active_tool->tool_info->tool_options;
/* copy various data objects' additional tool options again
* manually, they might have been overwritten by e.g. the "link
* brush stuff to brush defaults" logic in
* gimptooloptions-gui.c
*/
if (preset->use_brush)
gimp_paint_options_copy_brush_props (GIMP_PAINT_OPTIONS (src),
GIMP_PAINT_OPTIONS (dest));
if (preset->use_dynamics)
gimp_paint_options_copy_dynamics_props (GIMP_PAINT_OPTIONS (src),
GIMP_PAINT_OPTIONS (dest));
if (preset->use_gradient)
gimp_paint_options_copy_gradient_props (GIMP_PAINT_OPTIONS (src),
GIMP_PAINT_OPTIONS (dest));
}
}
gboolean
gimp_paint_core_start (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords,
GError **error)
{
GimpItem *item;
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
g_return_val_if_fail (coords != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
item = GIMP_ITEM (drawable);
if (core->stroke_buffer)
{
g_array_free (core->stroke_buffer, TRUE);
core->stroke_buffer = NULL;
}
core->stroke_buffer = g_array_sized_new (TRUE, TRUE,
sizeof (GimpCoords),
STROKE_BUFFER_INIT_SIZE);
core->cur_coords = *coords;
if (! GIMP_PAINT_CORE_GET_CLASS (core)->start (core, drawable,
paint_options,
coords, error))
{
return FALSE;
}
/* Allocate the undo structure */
if (core->undo_tiles)
tile_manager_unref (core->undo_tiles);
core->undo_tiles = tile_manager_new (gimp_item_get_width (item),
gimp_item_get_height (item),
gimp_drawable_bytes (drawable));
/* Allocate the saved proj structure */
if (core->saved_proj_tiles)
tile_manager_unref (core->saved_proj_tiles);
core->saved_proj_tiles = NULL;
if (core->use_saved_proj)
{
GimpImage *image = gimp_item_get_image (item);
GimpPickable *pickable = GIMP_PICKABLE (gimp_image_get_projection (image));
TileManager *tiles = gimp_pickable_get_tiles (pickable);
core->saved_proj_tiles = tile_manager_new (tile_manager_width (tiles),
tile_manager_height (tiles),
tile_manager_bpp (tiles));
}
/* Allocate the canvas blocks structure */
if (core->canvas_tiles)
tile_manager_unref (core->canvas_tiles);
core->canvas_tiles = tile_manager_new (gimp_item_get_width (item),
gimp_item_get_height (item),
1);
/* Get the initial undo extents */
core->x1 = core->x2 = core->cur_coords.x;
core->y1 = core->y2 = core->cur_coords.y;
core->last_paint.x = -1e6;
core->last_paint.y = -1e6;
/* Freeze the drawable preview so that it isn't constantly updated. */
gimp_viewable_preview_freeze (GIMP_VIEWABLE (drawable));
return TRUE;
}
