void
_gimp_paintbrush_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
gdouble opacity)
{
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_core);
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpPressureOptions *pressure_options = paint_options->pressure_options;
GimpImage *image;
GimpRGB gradient_color;
TempBuf *area;
guchar col[MAX_CHANNELS];
GimpPaintApplicationMode paint_appl_mode;
image = gimp_item_get_image (GIMP_ITEM (drawable));
opacity *= gimp_paint_options_get_fade (paint_options, image,
paint_core->pixel_dist);
if (opacity == 0.0)
return;
paint_appl_mode = paint_options->application_mode;
area = gimp_paint_core_get_paint_area (paint_core, drawable, paint_options);
if (! area)
return;
/* optionally take the color from the current gradient */
if (gimp_paint_options_get_gradient_color (paint_options, image,
paint_core->cur_coords.pressure,
paint_core->pixel_dist,
&gradient_color))
{
opacity *= gradient_color.a;
gimp_rgb_get_uchar (&gradient_color,
&col[RED_PIX],
&col[GREEN_PIX],
&col[BLUE_PIX]);
col[ALPHA_PIX] = OPAQUE_OPACITY;
color_pixels (temp_buf_data (area), col,
area->width * area->height,
area->bytes);
paint_appl_mode = GIMP_PAINT_INCREMENTAL;
}
/* otherwise check if the brush has a pixmap and use that to color the area */
else if (brush_core->brush && brush_core->brush->pixmap)
{
gimp_brush_core_color_area_with_pixmap (brush_core, drawable,
area,
gimp_paint_options_get_brush_mode (paint_options));
paint_appl_mode = GIMP_PAINT_INCREMENTAL;
}
/* otherwise fill the area with the foreground color */
else
{
gimp_image_get_foreground (image, context, gimp_drawable_type (drawable),
col);
col[area->bytes - 1] = OPAQUE_OPACITY;
color_pixels (temp_buf_data (area), col,
area->width * area->height,
area->bytes);
}
if (paint_core->use_pressure && pressure_options->opacity)
opacity *= PRESSURE_SCALE * paint_core->cur_coords.pressure;
/* finally, let the brush core paste the colored area on the canvas */
gimp_brush_core_paste_canvas (brush_core, drawable,
MIN (opacity, GIMP_OPACITY_OPAQUE),
gimp_context_get_opacity (context),
gimp_context_get_paint_mode (context),
gimp_paint_options_get_brush_mode (paint_options),
paint_appl_mode);
}
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);
}
