static GimpCanvasItem *
gimp_brush_tool_get_outline (GimpPaintTool *paint_tool,
GimpDisplay *display,
gdouble x,
gdouble y)
{
GimpBrushTool *brush_tool = GIMP_BRUSH_TOOL (paint_tool);
GimpCanvasItem *item;
item = gimp_brush_tool_create_outline (brush_tool, display, x, y);
if (! item)
{
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
if (brush_core->main_brush && brush_core->dynamics)
{
/* if an outline was expected, but got scaled away by
* transform/dynamics, draw a circle in the "normal" size.
*/
GimpPaintOptions *options;
options = GIMP_PAINT_TOOL_GET_OPTIONS (brush_tool);
gimp_paint_tool_set_draw_circle (paint_tool,
TRUE, options->brush_size);
}
}
return item;
}
static void
gimp_paint_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpPaintOptions *paint_options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
GimpPaintCore *core = paint_tool->core;
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpCoords curr_coords;
gint off_x, off_y;
GIMP_TOOL_CLASS (parent_class)->motion (tool, coords, time, state, display);
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
return;
curr_coords = *coords;
gimp_paint_core_smooth_coords (core, paint_options, &curr_coords);
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
curr_coords.x -= off_x;
curr_coords.y -= off_y;
/* don't paint while the Shift key is pressed for line drawing */
if (paint_tool->draw_line)
{
gimp_paint_core_set_current_coords (core, &curr_coords);
return;
}
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_paint_core_interpolate (core, drawable, paint_options,
&curr_coords, time);
gimp_projection_flush_now (gimp_image_get_projection (image));
gimp_display_flush_now (display);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_paint_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpPaintOptions *paint_options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
GimpPaintCore *core = paint_tool->core;
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
{
GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time,
state, release_type,
display);
return;
}
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* Let the specific painting function finish up */
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_FINISH, time);
/* resume the current selection */
gimp_display_shell_selection_resume (shell);
/* chain up to halt the tool */
GIMP_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
release_type, display);
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
gimp_paint_core_cancel (core, drawable);
else
gimp_paint_core_finish (core, drawable, TRUE);
gimp_image_flush (image);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_brush_tool_set_brush (GimpBrushCore *brush_core,
GimpBrush *brush,
GimpBrushTool *brush_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (brush_tool));
if (GIMP_BRUSH_CORE_GET_CLASS (brush_core)->handles_transforming_brush)
{
GimpPaintCore *paint_core = GIMP_PAINT_CORE (brush_core);
gimp_brush_core_eval_transform_dynamics (brush_core,
NULL,
GIMP_PAINT_TOOL_GET_OPTIONS (brush_tool),
&paint_core->cur_coords);
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (brush_tool));
}
static void
gimp_brush_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpPaintOptions *paint_options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
GimpDrawable *drawable;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state,
proximity, display);
drawable = gimp_image_get_active_drawable (gimp_display_get_image (display));
if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)) &&
drawable && proximity)
{
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
gimp_brush_core_set_brush (brush_core,
gimp_context_get_brush (context));
gimp_brush_core_set_dynamics (brush_core,
gimp_context_get_dynamics (context));
if (GIMP_BRUSH_CORE_GET_CLASS (brush_core)->handles_transforming_brush)
{
gimp_brush_core_eval_transform_dynamics (brush_core,
drawable,
paint_options,
coords);
}
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_paint_tool_constructed (GObject *object)
{
GimpTool *tool = GIMP_TOOL (object);
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (object);
GimpPaintOptions *options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
GimpDisplayConfig *display_config;
GimpPaintInfo *paint_info;
G_OBJECT_CLASS (parent_class)->constructed (object);
g_assert (GIMP_IS_TOOL_INFO (tool->tool_info));
g_assert (GIMP_IS_PAINT_INFO (tool->tool_info->paint_info));
display_config = GIMP_DISPLAY_CONFIG (tool->tool_info->gimp->config);
paint_info = tool->tool_info->paint_info;
g_assert (g_type_is_a (paint_info->paint_type, GIMP_TYPE_PAINT_CORE));
paint_tool->core = g_object_new (paint_info->paint_type,
"undo-desc", paint_info->blurb,
NULL);
g_signal_connect_object (options, "notify::hard",
G_CALLBACK (gimp_paint_tool_hard_notify),
tool, 0);
gimp_paint_tool_hard_notify (options, NULL, tool);
paint_tool->show_cursor = display_config->show_paint_tool_cursor;
paint_tool->draw_brush = display_config->show_brush_outline;
g_signal_connect_object (display_config, "notify::show-paint-tool-cursor",
G_CALLBACK (gimp_paint_tool_cursor_notify),
paint_tool, 0);
g_signal_connect_object (display_config, "notify::show-brush-outline",
G_CALLBACK (gimp_paint_tool_cursor_notify),
paint_tool, 0);
}
static void
gimp_paint_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpPaintOptions *paint_options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
GimpPaintCore *core = paint_tool->core;
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
{
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state,
proximity, display);
return;
}
gimp_draw_tool_pause (draw_tool);
if (gimp_draw_tool_is_active (draw_tool) &&
draw_tool->display != display)
gimp_draw_tool_stop (draw_tool);
gimp_tool_pop_status (tool, display);
if (tool->display &&
tool->display != display &&
gimp_display_get_image (tool->display) == image)
{
/* if this is a different display, but the same image, HACK around
* in tool internals AFTER stopping the current draw_tool, so
* straight line drawing works across different views of the
* same image.
*/
tool->display = display;
}
if (drawable && proximity)
{
gboolean constrain_mask = gimp_get_constrain_behavior_mask ();
gint off_x, off_y;
core->cur_coords = *coords;
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
core->cur_coords.x -= off_x;
core->cur_coords.y -= off_y;
if (display == tool->display && (state & GIMP_PAINT_TOOL_LINE_MASK))
{
/* If shift is down and this is not the first paint stroke,
* draw a line.
*/
gchar *status_help;
gdouble dx, dy, dist;
gimp_paint_core_round_line (core, paint_options,
(state & constrain_mask) != 0);
dx = core->cur_coords.x - core->last_coords.x;
dy = core->cur_coords.y - core->last_coords.y;
status_help = gimp_suggest_modifiers (paint_tool->status_line,
constrain_mask & ~state,
NULL,
_("%s for constrained angles"),
NULL);
/* show distance in statusbar */
if (shell->unit == GIMP_UNIT_PIXEL)
{
dist = sqrt (SQR (dx) + SQR (dy));
gimp_tool_push_status (tool, display, "%.1f %s. %s",
dist, _("pixels"), status_help);
}
else
{
gdouble xres;
gdouble yres;
gchar format_str[64];
gimp_image_get_resolution (image, &xres, &yres);
g_snprintf (format_str, sizeof (format_str), "%%.%df %s. %%s",
gimp_unit_get_digits (shell->unit),
gimp_unit_get_symbol (shell->unit));
dist = (gimp_unit_get_factor (shell->unit) *
sqrt (SQR (dx / xres) +
SQR (dy / yres)));
gimp_tool_push_status (tool, display, format_str,
dist, status_help);
}
g_free (status_help);
paint_tool->draw_line = TRUE;
}
else
{
gchar *status;
GdkModifierType modifiers = 0;
/* HACK: A paint tool may set status_ctrl to NULL to indicate that
* it ignores the Ctrl modifier (temporarily or permanently), so
* it should not be suggested. This is different from how
* gimp_suggest_modifiers() would interpret this parameter.
*/
if (paint_tool->status_ctrl != NULL)
modifiers |= constrain_mask;
/* suggest drawing lines only after the first point is set
*/
if (display == tool->display)
modifiers |= GIMP_PAINT_TOOL_LINE_MASK;
status = gimp_suggest_modifiers (paint_tool->status,
modifiers & ~state,
_("%s for a straight line"),
paint_tool->status_ctrl,
NULL);
gimp_tool_push_status (tool, display, "%s", status);
g_free (status);
paint_tool->draw_line = FALSE;
}
if (! gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_start (draw_tool, display);
}
else if (gimp_draw_tool_is_active (draw_tool))
{
gimp_draw_tool_stop (draw_tool);
}
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
display);
gimp_draw_tool_resume (draw_tool);
}
static void
gimp_paint_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpPaintOptions *paint_options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
GimpPaintCore *core = paint_tool->core;
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpCoords curr_coords;
gint off_x, off_y;
GError *error = NULL;
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
{
GIMP_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
press_type, display);
return;
}
if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)))
{
gimp_tool_message_literal (tool, display,
_("Cannot paint on layer groups."));
return;
}
if (gimp_item_is_content_locked (GIMP_ITEM (drawable)))
{
gimp_tool_message_literal (tool, display,
_("The active layer's pixels are locked."));
return;
}
if (! gimp_item_is_visible (GIMP_ITEM (drawable)))
{
gimp_tool_message_literal (tool, display,
_("The active layer is not visible."));
return;
}
curr_coords = *coords;
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
curr_coords.x -= off_x;
curr_coords.y -= off_y;
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_stop (draw_tool);
if (tool->display &&
tool->display != display &&
gimp_display_get_image (tool->display) == image)
{
/* if this is a different display, but the same image, HACK around
* in tool internals AFTER stopping the current draw_tool, so
* straight line drawing works across different views of the
* same image.
*/
tool->display = display;
}
if (! gimp_paint_core_start (core, drawable, paint_options, &curr_coords,
&error))
{
gimp_tool_message_literal (tool, display, error->message);
g_clear_error (&error);
return;
}
if ((display != tool->display) || ! paint_tool->draw_line)
{
/* if this is a new display, resest the "last stroke's endpoint"
* because there is none
*/
if (display != tool->display)
core->start_coords = core->cur_coords;
core->last_coords = core->cur_coords;
core->distance = 0.0;
core->pixel_dist = 0.0;
}
else if (paint_tool->draw_line)
{
gboolean constrain = (state & gimp_get_constrain_behavior_mask ()) != 0;
/* If shift is down and this is not the first paint
* stroke, then draw a line from the last coords to the pointer
*/
gimp_paint_core_round_line (core, paint_options, constrain);
}
/* chain up to activate the tool */
GIMP_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
press_type, display);
/* pause the current selection */
gimp_display_shell_selection_pause (shell);
/* Let the specific painting function initialize itself */
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_INIT, time);
/* Paint to the image */
if (paint_tool->draw_line)
{
gimp_paint_core_interpolate (core, drawable, paint_options,
&core->cur_coords, time);
}
else
{
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_MOTION, time);
}
gimp_projection_flush_now (gimp_image_get_projection (image));
gimp_display_flush_now (display);
gimp_draw_tool_start (draw_tool, display);
}
GimpCanvasItem *
gimp_brush_tool_create_outline (GimpBrushTool *brush_tool,
GimpDisplay *display,
gdouble x,
gdouble y)
{
GimpBrushCore *brush_core;
GimpPaintOptions *options;
GimpDisplayShell *shell;
const GimpBezierDesc *boundary = NULL;
gint width = 0;
gint height = 0;
g_return_val_if_fail (GIMP_IS_BRUSH_TOOL (brush_tool), NULL);
g_return_val_if_fail (GIMP_IS_DISPLAY (display), NULL);
if (! GIMP_PAINT_TOOL (brush_tool)->draw_brush)
return NULL;
brush_core = GIMP_BRUSH_CORE (GIMP_PAINT_TOOL (brush_tool)->core);
options = GIMP_PAINT_TOOL_GET_OPTIONS (brush_tool);
shell = gimp_display_get_shell (display);
if (! brush_core->main_brush || ! brush_core->dynamics)
return NULL;
if (brush_core->scale > 0.0)
boundary = gimp_brush_transform_boundary (brush_core->main_brush,
brush_core->scale,
brush_core->aspect_ratio,
brush_core->angle,
brush_core->hardness,
&width,
&height);
/* don't draw the boundary if it becomes too small */
if (boundary &&
SCALEX (shell, width) > 4 &&
SCALEY (shell, height) > 4)
{
x -= width / 2.0;
y -= height / 2.0;
if (gimp_paint_options_get_brush_mode (options) == GIMP_BRUSH_HARD)
{
#define EPSILON 0.000001
/* Add EPSILON before rounding since e.g.
* (5.0 - 0.5) may end up at (4.499999999....)
* due to floating point fnords
*/
x = RINT (x + EPSILON);
y = RINT (y + EPSILON);
#undef EPSILON
}
return gimp_canvas_path_new (shell, boundary, x, y, FALSE,
GIMP_PATH_STYLE_OUTLINE);
}
return NULL;
}
