static void
gimp_cage_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_PLUS;
if (tool->display)
{
if (ct->hovering_handle != -1)
{
modifier = GIMP_CURSOR_MODIFIER_MOVE;
}
else if (ct->hovering_edge != -1 && options->cage_mode == GIMP_CAGE_MODE_CAGE_CHANGE)
{
modifier = GIMP_CURSOR_MODIFIER_PLUS;
}
else
{
if (gimp_cage_tool_is_complete (ct))
modifier = GIMP_CURSOR_MODIFIER_BAD;
}
}
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_cage_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
ct->cursor_x = coords->x;
ct->cursor_y = coords->y;
switch (ct->tool_state)
{
case CAGE_STATE_MOVE_HANDLE:
case CAGE_STATE_CLOSING:
case DEFORM_STATE_MOVE_HANDLE:
gimp_cage_config_add_displacement (ct->config,
options->cage_mode,
ct->cursor_x - ct->movement_start_x,
ct->cursor_y - ct->movement_start_y);
break;
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_cage_tool_create_render_node (GimpCageTool *ct)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GeglNode *coef, *cage, *render; /* Render nodes */
GeglNode *input, *output; /* Proxy nodes*/
GeglNode *node; /* wraper to be returned */
GObject *transform;
g_return_if_fail (ct->render_node == NULL);
/* render_node is not supposed to be recreated */
node = gegl_node_new ();
input = gegl_node_get_input_proxy (node, "input");
output = gegl_node_get_output_proxy (node, "output");
coef = gegl_node_new_child (node,
"operation", "gegl:buffer-source",
"buffer", ct->coef,
NULL);
cage = gegl_node_new_child (node,
"operation", "gimp:cage-transform",
"config", ct->config,
"fill_plain_color", options->fill_plain_color,
NULL);
render = gegl_node_new_child (node,
"operation", "gegl:map-absolute",
NULL);
gegl_node_connect_to (input, "output",
cage, "input");
gegl_node_connect_to (coef, "output",
cage, "aux");
gegl_node_connect_to (input, "output",
render, "input");
gegl_node_connect_to (cage, "output",
render, "aux");
gegl_node_connect_to (render, "output",
output, "input");
ct->render_node = node;
ct->cage_node = cage;
ct->coef_node = coef;
g_object_get (cage, "gegl-operation", &transform, NULL);
g_signal_connect (transform, "notify::progress",
G_CALLBACK (gimp_cage_tool_transform_progress),
ct);
g_object_unref (transform);
}
static gint
gimp_cage_tool_is_on_edge (GimpCageTool *ct,
gdouble x,
gdouble y,
gint handle_size)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCageConfig *config = ct->config;
gint i;
guint n_cage_vertices;
GimpVector2 A, B, C, AB, BC, AC;
gdouble lAB, lBC, lAC, lEB, lEC;
g_return_val_if_fail (GIMP_IS_CAGE_TOOL (ct), -1);
n_cage_vertices = gimp_cage_config_get_n_points (config);
if (n_cage_vertices < 2)
return -1;
A = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
n_cage_vertices-1);
B = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
0);
C.x = x;
C.y = y;
for (i = 0; i < n_cage_vertices; i++)
{
gimp_vector2_sub (&AB, &A, &B);
gimp_vector2_sub (&BC, &B, &C);
gimp_vector2_sub (&AC, &A, &C);
lAB = gimp_vector2_length (&AB);
lBC = gimp_vector2_length (&BC);
lAC = gimp_vector2_length (&AC);
lEB = lAB / 2 + (SQR (lBC) - SQR (lAC)) / (2 * lAB);
lEC = sqrt (SQR (lBC) - SQR (lEB));
if ((lEC < handle_size / 2) && (abs (SQR (lBC) - SQR (lAC)) <= SQR (lAB)))
return i;
A = B;
B = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
(i+1) % n_cage_vertices);
}
return -1;
}
static gint
gimp_cage_tool_is_on_handle (GimpCageTool *ct,
GimpDrawTool *draw_tool,
GimpDisplay *display,
gdouble x,
gdouble y,
gint handle_size)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCageConfig *config = ct->config;
gdouble dist = G_MAXDOUBLE;
gint i;
GimpVector2 cage_point;
guint n_cage_vertices;
g_return_val_if_fail (GIMP_IS_CAGE_TOOL (ct), -1);
n_cage_vertices = gimp_cage_config_get_n_points (config);
if (n_cage_vertices == 0)
return -1;
for (i = 0; i < n_cage_vertices; i++)
{
cage_point = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
i);
cage_point.x += ct->offset_x;
cage_point.y += ct->offset_y;
dist = gimp_draw_tool_calc_distance_square (GIMP_DRAW_TOOL (draw_tool),
display,
x, y,
cage_point.x,
cage_point.y);
if (dist <= SQR (handle_size / 2))
return i;
}
return -1;
}
static void
gimp_cage_tool_render_node_update (GimpCageTool *ct)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
gboolean option_fill, node_fill;
GeglBuffer *buffer;
g_object_get (options,
"fill-plain-color", &option_fill,
NULL);
gegl_node_get (ct->cage_node,
"fill-plain-color", &node_fill,
NULL);
if (option_fill != node_fill)
{
gegl_node_set (ct->cage_node,
"fill_plain_color", option_fill,
NULL);
}
gegl_node_get (ct->coef_node,
"buffer", &buffer,
NULL);
if (buffer != ct->coef)
{
gegl_node_set (ct->coef_node,
"buffer", ct->coef,
NULL);
}
/* This just unref buffer, since gegl_node_get add a refcount on it */
if (buffer)
{
g_object_unref (buffer);
}
}
static void
gimp_cage_tool_draw (GimpDrawTool *draw_tool)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (draw_tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCageConfig *config = ct->config;
GimpCanvasGroup *stroke_group;
gint n_vertices;
gint i;
GimpHandleType handle;
n_vertices = gimp_cage_config_get_n_points (config);
if (n_vertices == 0)
return;
if (ct->tool_state == CAGE_STATE_INIT)
return;
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool);
gimp_draw_tool_push_group (draw_tool, stroke_group);
/* If needed, draw line to the cursor. */
if (! gimp_cage_tool_is_complete (ct))
{
GimpVector2 last_point;
last_point = gimp_cage_config_get_point_coordinate (ct->config,
options->cage_mode,
n_vertices - 1);
gimp_draw_tool_add_line (draw_tool,
last_point.x + ct->offset_x,
last_point.y + ct->offset_y,
ct->cursor_x,
ct->cursor_y);
}
gimp_draw_tool_pop_group (draw_tool);
/* Draw the cage with handles. */
for (i = 0; i < n_vertices; i++)
{
GimpVector2 point1, point2;
point1 = gimp_cage_config_get_point_coordinate (ct->config,
options->cage_mode,
i);
point1.x += ct->offset_x;
point1.y += ct->offset_y;
if (i > 0 || gimp_cage_tool_is_complete (ct))
{
gint index_point2;
if (i == 0)
index_point2 = n_vertices - 1;
else
index_point2 = i - 1;
point2 = gimp_cage_config_get_point_coordinate (ct->config,
options->cage_mode,
index_point2);
point2.x += ct->offset_x;
point2.y += ct->offset_y;
gimp_draw_tool_push_group (draw_tool, stroke_group);
gimp_draw_tool_add_line (draw_tool,
point1.x,
point1.y,
point2.x,
point2.y);
gimp_draw_tool_pop_group (draw_tool);
}
if (i == ct->hovering_handle)
handle = GIMP_HANDLE_FILLED_CIRCLE;
else
handle = GIMP_HANDLE_CIRCLE;
gimp_draw_tool_add_handle (draw_tool,
handle,
point1.x,
point1.y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_HANDLE_ANCHOR_CENTER);
if (gimp_cage_config_point_is_selected (ct->config, i))
{
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
point1.x,
point1.y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_HANDLE_ANCHOR_CENTER);
}
}
if (ct->tool_state == DEFORM_STATE_SELECTING ||
ct->tool_state == CAGE_STATE_SELECTING)
{
gimp_draw_tool_add_rectangle (draw_tool,
FALSE,
MIN (ct->selection_start_x, ct->cursor_x),
MIN (ct->selection_start_y, ct->cursor_y),
abs (ct->selection_start_x - ct->cursor_x),
abs (ct->selection_start_y - ct->cursor_y));
}
}
void
gimp_cage_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (ct));
gimp_tool_control_halt (tool->control);
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
/* Cancelling */
switch (ct->tool_state)
{
case CAGE_STATE_CLOSING:
ct->tool_state = CAGE_STATE_WAIT;
break;
case CAGE_STATE_MOVE_HANDLE:
gimp_cage_config_remove_last_cage_point (ct->config);
ct->tool_state = CAGE_STATE_WAIT;
break;
case CAGE_STATE_SELECTING:
ct->tool_state = CAGE_STATE_WAIT;
break;
case DEFORM_STATE_MOVE_HANDLE:
gimp_cage_tool_image_map_update (ct);
ct->tool_state = DEFORM_STATE_WAIT;
break;
case DEFORM_STATE_SELECTING:
ct->tool_state = DEFORM_STATE_WAIT;
break;
}
gimp_cage_config_reset_displacement (ct->config);
}
else
{
/* Normal release */
switch (ct->tool_state)
{
case CAGE_STATE_CLOSING:
ct->dirty_coef = TRUE;
gimp_cage_config_commit_displacement (ct->config);
if (release_type == GIMP_BUTTON_RELEASE_CLICK)
g_object_set (options, "cage-mode", GIMP_CAGE_MODE_DEFORM, NULL);
break;
case CAGE_STATE_MOVE_HANDLE:
ct->dirty_coef = TRUE;
ct->tool_state = CAGE_STATE_WAIT;
gimp_cage_config_commit_displacement (ct->config);
break;
case CAGE_STATE_SELECTING:
{
GeglRectangle area = { MIN (ct->selection_start_x, coords->x) - ct->offset_x,
MIN (ct->selection_start_y, coords->y) - ct->offset_y,
abs (ct->selection_start_x - coords->x),
abs (ct->selection_start_y - coords->y) };
if (state & GDK_SHIFT_MASK)
{
gimp_cage_config_select_add_area (ct->config,
GIMP_CAGE_MODE_CAGE_CHANGE,
area);
}
else
{
gimp_cage_config_select_area (ct->config,
GIMP_CAGE_MODE_CAGE_CHANGE,
area);
}
ct->tool_state = CAGE_STATE_WAIT;
}
break;
case DEFORM_STATE_MOVE_HANDLE:
ct->tool_state = DEFORM_STATE_WAIT;
gimp_cage_config_commit_displacement (ct->config);
gimp_cage_tool_image_map_update (ct);
break;
case DEFORM_STATE_SELECTING:
{
GeglRectangle area = { MIN (ct->selection_start_x, coords->x) - ct->offset_x,
MIN (ct->selection_start_y, coords->y) - ct->offset_y,
abs (ct->selection_start_x - coords->x),
abs (ct->selection_start_y - coords->y) };
if (state & GDK_SHIFT_MASK)
{
gimp_cage_config_select_add_area (ct->config,
GIMP_CAGE_MODE_DEFORM, area);
}
else
{
gimp_cage_config_select_area (ct->config,
GIMP_CAGE_MODE_DEFORM, area);
}
ct->tool_state = DEFORM_STATE_WAIT;
}
break;
}
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
