GimpBrushApplicationMode
gimp_paint_options_get_brush_mode (GimpPaintOptions *paint_options)
{
GimpDynamics *dynamics;
GimpDynamicsOutput *force_output;
gboolean dynamic_force = FALSE;
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)
dynamic_force = gimp_dynamics_output_is_enabled (force_output);
if (dynamic_force || (paint_options->brush_force > 0.0))
return GIMP_BRUSH_PRESSURE;
return GIMP_BRUSH_SOFT;
}
static void
gimp_dynamics_editor_init_output_editors (GimpDynamics *dynamics,
GtkWidget *view_selector,
GtkWidget *notebook,
GtkWidget *check_grid)
{
GtkTreeModel *model = gtk_combo_box_get_model (GTK_COMBO_BOX (view_selector));
GimpIntStore *list = GIMP_INT_STORE (model);
GtkTreeIter iter;
gboolean iter_valid;
gint i;
for (iter_valid = gtk_tree_model_get_iter_first (model, &iter), i = 1;
iter_valid;
iter_valid = gtk_tree_model_iter_next (model, &iter), i++)
{
gint output_type;
gchar *label;
GimpDynamicsOutput *output;
GtkWidget *output_editor;
gtk_tree_model_get (GTK_TREE_MODEL (model), &iter,
GIMP_INT_STORE_VALUE, &output_type,
GIMP_INT_STORE_LABEL, &label,
-1);
output = gimp_dynamics_get_output (dynamics, output_type);
output_editor = gimp_dynamics_output_editor_new (output);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), output_editor, NULL);
gtk_widget_show (output_editor);
gtk_list_store_set (GTK_LIST_STORE (list), &iter,
GIMP_INT_STORE_USER_DATA, output_editor,
-1);
gimp_dynamics_editor_add_output_row (G_OBJECT (output),
label,
GTK_GRID (check_grid),
i);
g_free (label);
}
g_signal_connect (G_OBJECT (view_selector), "changed",
G_CALLBACK (gimp_dynamics_editor_view_changed),
notebook);
}
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;
GimpDynamics *dynamics;
GimpDynamicsOutput *color_output;
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));
dynamics = gimp_context_get_dynamics (GIMP_CONTEXT (paint_options));
color_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_COLOR);
if (gimp_dynamics_output_is_enabled (color_output))
{
gimp_gradient_get_color_at (gradient, GIMP_CONTEXT (paint_options),
NULL, grad_point,
gradient_options->gradient_reverse,
color);
return TRUE;
}
return FALSE;
}
static void
gimp_clone_motion (GimpSourceCore *source_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords,
gdouble opacity,
GimpPickable *src_pickable,
PixelRegion *srcPR,
gint src_offset_x,
gint src_offset_y,
TempBuf *paint_area,
gint paint_area_offset_x,
gint paint_area_offset_y,
gint paint_area_width,
gint paint_area_height)
{
GimpPaintCore *paint_core = GIMP_PAINT_CORE (source_core);
GimpCloneOptions *options = GIMP_CLONE_OPTIONS (paint_options);
GimpSourceOptions *source_options = GIMP_SOURCE_OPTIONS (paint_options);
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
GimpImage *src_image = NULL;
GimpDynamicsOutput *force_output;
GimpImageType src_type = 0;
GimpImageType dest_type;
gpointer pr = NULL;
gint y;
PixelRegion destPR;
GimpPattern *pattern = NULL;
gdouble fade_point;
gdouble force;
switch (options->clone_type)
{
case GIMP_IMAGE_CLONE:
src_image = gimp_pickable_get_image (src_pickable);
src_type = gimp_pickable_get_image_type (src_pickable);
if (gimp_pickable_get_bytes (src_pickable) < srcPR->bytes)
src_type = GIMP_IMAGE_TYPE_WITH_ALPHA (src_type);
pixel_region_init_temp_buf (&destPR, paint_area,
paint_area_offset_x, paint_area_offset_y,
paint_area_width, paint_area_height);
pr = pixel_regions_register (2, srcPR, &destPR);
break;
case GIMP_PATTERN_CLONE:
pattern = gimp_context_get_pattern (context);
pixel_region_init_temp_buf (&destPR, paint_area,
0, 0,
paint_area->width, paint_area->height);
pr = pixel_regions_register (1, &destPR);
break;
}
dest_type = gimp_drawable_type (drawable);
for (; pr != NULL; pr = pixel_regions_process (pr))
{
guchar *s = srcPR->data;
guchar *d = destPR.data;
for (y = 0; y < destPR.h; y++)
{
switch (options->clone_type)
{
case GIMP_IMAGE_CLONE:
gimp_clone_line_image (image, dest_type,
src_image, src_type,
s, d,
srcPR->bytes, destPR.bytes, destPR.w);
s += srcPR->rowstride;
break;
case GIMP_PATTERN_CLONE:
gimp_clone_line_pattern (image, dest_type,
pattern, d,
paint_area->x + src_offset_x,
paint_area->y + y + src_offset_y,
destPR.bytes, destPR.w);
break;
}
d += destPR.rowstride;
}
}
force_output = gimp_dynamics_get_output (GIMP_BRUSH_CORE (paint_core)->dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE);
fade_point = gimp_paint_options_get_fade (paint_options, image,
paint_core->pixel_dist);
force = gimp_dynamics_output_get_linear_value (force_output,
coords,
paint_options,
fade_point);
gimp_brush_core_paste_canvas (GIMP_BRUSH_CORE (paint_core), drawable,
coords,
MIN (opacity, GIMP_OPACITY_OPAQUE),
gimp_context_get_opacity (context),
gimp_context_get_paint_mode (context),
gimp_paint_options_get_brush_mode (paint_options),
force,
/* In fixed mode, paint incremental so the
* individual brushes are properly applied
* on top of each other.
* Otherwise the stuff we paint is seamless
* and we don't need intermediate masking.
*/
source_options->align_mode ==
GIMP_SOURCE_ALIGN_FIXED ?
GIMP_PAINT_INCREMENTAL : GIMP_PAINT_CONSTANT);
}
static void
gimp_eraser_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords)
{
GimpEraserOptions *options = GIMP_ERASER_OPTIONS (paint_options);
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
GimpDynamicsOutput *opacity_output;
GimpDynamicsOutput *force_output;
GimpImage *image;
gdouble fade_point;
gdouble opacity;
TempBuf *area;
guchar col[MAX_CHANNELS];
gdouble force;
image = gimp_item_get_image (GIMP_ITEM (drawable));
opacity_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_OPACITY);
fade_point = gimp_paint_options_get_fade (paint_options,
gimp_item_get_image (GIMP_ITEM (drawable)),
paint_core->pixel_dist);
opacity = gimp_dynamics_output_get_linear_value (opacity_output,
coords,
paint_options,
fade_point);
if (opacity == 0.0)
return;
area = gimp_paint_core_get_paint_area (paint_core, drawable, paint_options,
coords);
if (! area)
return;
gimp_image_get_background (image, context, gimp_drawable_type (drawable),
col);
/* set the alpha channel */
col[area->bytes - 1] = OPAQUE_OPACITY;
/* color the pixels */
color_pixels (temp_buf_get_data (area), col,
area->width * area->height, area->bytes);
force_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE);
force = gimp_dynamics_output_get_linear_value (force_output,
coords,
paint_options,
fade_point);
gimp_brush_core_paste_canvas (GIMP_BRUSH_CORE (paint_core), drawable,
coords,
MIN (opacity, GIMP_OPACITY_OPAQUE),
gimp_context_get_opacity (context),
(options->anti_erase ?
GIMP_ANTI_ERASE_MODE : GIMP_ERASE_MODE),
gimp_paint_options_get_brush_mode (paint_options),
force,
paint_options->application_mode);
}
static void
gimp_smudge_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords)
{
GimpSmudge *smudge = GIMP_SMUDGE (paint_core);
GimpSmudgeOptions *options = GIMP_SMUDGE_OPTIONS (paint_options);
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
GeglBuffer *paint_buffer;
gint paint_buffer_x;
gint paint_buffer_y;
gint paint_buffer_width;
gint paint_buffer_height;
gdouble fade_point;
gdouble opacity;
gdouble rate;
gdouble dynamic_rate;
gint x, y;
gdouble force;
gdouble dyn_force;
GimpDynamicsOutput *dyn_output = NULL;
fade_point = gimp_paint_options_get_fade (paint_options, image,
paint_core->pixel_dist);
opacity = gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_OPACITY,
coords,
paint_options,
fade_point);
if (opacity == 0.0)
return;
paint_buffer = gimp_paint_core_get_paint_buffer (paint_core, drawable,
paint_options, coords,
&paint_buffer_x,
&paint_buffer_y);
if (! paint_buffer)
return;
paint_buffer_width = gegl_buffer_get_width (paint_buffer);
paint_buffer_height = gegl_buffer_get_height (paint_buffer);
/* Get the unclipped acumulator coordinates */
gimp_smudge_accumulator_coords (paint_core, coords, &x, &y);
/* Enable dynamic rate */
dynamic_rate = gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_RATE,
coords,
paint_options,
fade_point);
rate = (options->rate / 100.0) * dynamic_rate;
/* Smudge uses the buffer Accum.
* For each successive painthit Accum is built like this
* Accum = rate*Accum + (1-rate)*I.
* where I is the pixels under the current painthit.
* Then the paint area (paint_area) is built as
* (Accum,1) (if no alpha),
*/
gimp_gegl_smudge_blend (smudge->accum_buffer,
GEGL_RECTANGLE (paint_buffer_x - x,
paint_buffer_y - y,
paint_buffer_width,
paint_buffer_height),
gimp_drawable_get_buffer (drawable),
GEGL_RECTANGLE (paint_buffer_x,
paint_buffer_y,
paint_buffer_width,
paint_buffer_height),
smudge->accum_buffer,
GEGL_RECTANGLE (paint_buffer_x - x,
paint_buffer_y - y,
paint_buffer_width,
paint_buffer_height),
rate);
gegl_buffer_copy (smudge->accum_buffer,
GEGL_RECTANGLE (paint_buffer_x - x,
paint_buffer_y - y,
paint_buffer_width,
paint_buffer_height),
paint_buffer,
GEGL_RECTANGLE (0, 0, 0, 0));
dyn_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE);
dyn_force = gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE,
coords,
paint_options,
fade_point);
if (gimp_dynamics_output_is_enabled (dyn_output))
force = dyn_force;
else
force = paint_options->brush_force;
gimp_brush_core_replace_canvas (GIMP_BRUSH_CORE (paint_core), drawable,
coords,
MIN (opacity, GIMP_OPACITY_OPAQUE),
gimp_context_get_opacity (context),
gimp_paint_options_get_brush_mode (paint_options),
force,
GIMP_PAINT_INCREMENTAL);
}
void
_gimp_paintbrush_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords,
gdouble opacity)
{
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_core);
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpDynamics *dynamics = brush_core->dynamics;
GimpImage *image;
GimpRGB gradient_color;
GeglBuffer *paint_buffer;
gint paint_buffer_x;
gint paint_buffer_y;
GimpPaintApplicationMode paint_appl_mode;
gdouble fade_point;
gdouble grad_point;
gdouble force;
gdouble dyn_force;
GimpDynamicsOutput *dyn_output = NULL;
image = gimp_item_get_image (GIMP_ITEM (drawable));
fade_point = gimp_paint_options_get_fade (paint_options, image,
paint_core->pixel_dist);
opacity *= gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_OPACITY,
coords,
paint_options,
fade_point);
if (opacity == 0.0)
return;
paint_buffer = gimp_paint_core_get_paint_buffer (paint_core, drawable,
paint_options, coords,
&paint_buffer_x,
&paint_buffer_y);
if (! paint_buffer)
return;
paint_appl_mode = paint_options->application_mode;
grad_point = gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_COLOR,
coords,
paint_options,
fade_point);
if (gimp_paint_options_get_gradient_color (paint_options, image,
grad_point,
paint_core->pixel_dist,
&gradient_color))
{
/* optionally take the color from the current gradient */
GeglColor *color;
opacity *= gradient_color.a;
gimp_rgb_set_alpha (&gradient_color, GIMP_OPACITY_OPAQUE);
color = gimp_gegl_color_new (&gradient_color);
gegl_buffer_set_color (paint_buffer, NULL, color);
g_object_unref (color);
paint_appl_mode = GIMP_PAINT_INCREMENTAL;
}
else if (brush_core->brush && gimp_brush_get_pixmap (brush_core->brush))
{
/* otherwise check if the brush has a pixmap and use that to
* color the area
*/
gimp_brush_core_color_area_with_pixmap (brush_core, drawable,
coords,
paint_buffer,
paint_buffer_x,
paint_buffer_y,
gimp_paint_options_get_brush_mode (paint_options));
paint_appl_mode = GIMP_PAINT_INCREMENTAL;
}
else
{
/* otherwise fill the area with the foreground color */
GimpRGB foreground;
GeglColor *color;
gimp_context_get_foreground (context, &foreground);
color = gimp_gegl_color_new (&foreground);
gegl_buffer_set_color (paint_buffer, NULL, color);
g_object_unref (color);
}
dyn_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE);
dyn_force = gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE,
coords,
paint_options,
fade_point);
if (gimp_dynamics_output_is_enabled (dyn_output))
force = dyn_force;
else
force = paint_options->brush_force;
/* finally, let the brush core paste the colored area on the canvas */
gimp_brush_core_paste_canvas (brush_core, drawable,
coords,
MIN (opacity, GIMP_OPACITY_OPAQUE),
gimp_context_get_opacity (context),
gimp_context_get_paint_mode (context),
gimp_paint_options_get_brush_mode (paint_options),
force,
paint_appl_mode);
}
static void
gimp_convolve_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords)
{
GimpConvolve *convolve = GIMP_CONVOLVE (paint_core);
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_core);
GimpConvolveOptions *options = GIMP_CONVOLVE_OPTIONS (paint_options);
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
GimpDynamicsOutput *opacity_output;
GimpDynamicsOutput *rate_output;
GimpImage *image;
TempBuf *area;
PixelRegion srcPR;
PixelRegion destPR;
PixelRegion tempPR;
guchar *buffer;
gdouble fade_point;
gdouble opacity;
gdouble rate;
gint bytes;
if (gimp_drawable_is_indexed (drawable))
return;
image = gimp_item_get_image (GIMP_ITEM (drawable));
opacity_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_OPACITY);
fade_point = gimp_paint_options_get_fade (paint_options, image,
paint_core->pixel_dist);
opacity = gimp_dynamics_output_get_linear_value (opacity_output,
coords,
paint_options,
fade_point);
if (opacity == 0.0)
return;
area = gimp_paint_core_get_paint_area (paint_core, drawable, paint_options,
coords);
if (! area)
return;
rate_output = gimp_dynamics_get_output (dynamics,
GIMP_DYNAMICS_OUTPUT_RATE);
rate = (options->rate *
gimp_dynamics_output_get_linear_value (rate_output,
coords,
paint_options,
fade_point));
gimp_convolve_calculate_matrix (convolve, options->type,
brush_core->brush->mask->width / 2,
brush_core->brush->mask->height / 2,
rate);
/* configure the source pixel region */
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
area->x, area->y, area->width, area->height, FALSE);
if (gimp_drawable_has_alpha (drawable))
{
bytes = srcPR.bytes;
buffer = g_malloc (area->height * bytes * area->width);
pixel_region_init_data (&tempPR, buffer,
bytes, bytes * area->width,
0, 0, area->width, area->height);
copy_region (&srcPR, &tempPR);
}
else
{
/* note: this particular approach needlessly convolves the totally-
opaque alpha channel. A faster approach would be to keep
tempPR the same number of bytes as srcPR, and extend the
paint_core_replace_canvas API to handle non-alpha images. */
bytes = srcPR.bytes + 1;
buffer = g_malloc (area->height * bytes * area->width);
pixel_region_init_data (&tempPR, buffer,
bytes, bytes * area->width,
0, 0, area->width, area->height);
add_alpha_region (&srcPR, &tempPR);
}
/* Convolve the region */
pixel_region_init_data (&tempPR, buffer,
bytes, bytes * area->width,
0, 0, area->width, area->height);
pixel_region_init_temp_buf (&destPR, area,
0, 0, area->width, area->height);
convolve_region (&tempPR, &destPR,
convolve->matrix, 3, convolve->matrix_divisor,
GIMP_NORMAL_CONVOL, TRUE);
g_free (buffer);
gimp_brush_core_replace_canvas (brush_core, drawable,
coords,
MIN (opacity, GIMP_OPACITY_OPAQUE),
gimp_context_get_opacity (context),
gimp_paint_options_get_brush_mode (paint_options),
1.0,
GIMP_PAINT_INCREMENTAL);
}
