static GimpBlendToolPoint
gimp_blend_tool_get_point_under_cursor (GimpBlendTool *blend_tool)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (blend_tool);
gdouble dist;
if (!draw_tool->display)
return POINT_NONE;
/* Check the points in the reverse order of drawing */
/* Check end point */
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->end_x,
blend_tool->end_y);
if (dist < POINT_GRAB_THRESHOLD_SQ)
return POINT_END;
/* Check start point */
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->start_x,
blend_tool->start_y);
if (dist < POINT_GRAB_THRESHOLD_SQ)
return POINT_START;
/* No point found */
return POINT_NONE;
}
static void
gimp_blend_tool_update_item_hilight (GimpBlendTool *blend_tool)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (blend_tool);
if (gimp_draw_tool_is_active (draw_tool))
{
GimpBlendToolPoint hilight_point;
gboolean start_visible, end_visible;
/* Calculate handle visibility */
if (blend_tool->grabbed_point)
{
start_visible = FALSE;
end_visible = FALSE;
}
else
{
gdouble dist;
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->start_x,
blend_tool->start_y);
start_visible = dist < FULL_HANDLE_THRESHOLD_SQ;
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->end_x,
blend_tool->end_y);
end_visible = dist < FULL_HANDLE_THRESHOLD_SQ;
}
gimp_canvas_item_set_visible (blend_tool->start_handle_circle,
start_visible);
gimp_canvas_item_set_visible (blend_tool->end_handle_circle,
end_visible);
/* Update hilights */
if (blend_tool->grabbed_point)
hilight_point = blend_tool->grabbed_point;
else
hilight_point = gimp_blend_tool_get_point_under_cursor (blend_tool);
gimp_canvas_item_set_highlight (blend_tool->start_handle_circle,
hilight_point == POINT_START);
gimp_canvas_item_set_highlight (blend_tool->start_handle_cross,
hilight_point == POINT_START);
gimp_canvas_item_set_highlight (blend_tool->end_handle_circle,
hilight_point == POINT_END);
gimp_canvas_item_set_highlight (blend_tool->end_handle_cross,
hilight_point == POINT_END);
}
}
/**
* gimp_draw_tool_calc_distance:
* @draw_tool: a #GimpDrawTool
* @display: a #GimpDisplay
* @x1: start point X in image coordinates
* @y1: start point Y in image coordinates
* @x2: end point X in image coordinates
* @y2: end point Y in image coordinates
*
* If you just need to compare distances, consider to use
* gimp_draw_tool_calc_distance_square() instead.
*
* Returns: the distance between the given points in display coordinates
**/
gdouble
gimp_draw_tool_calc_distance (GimpDrawTool *draw_tool,
GimpDisplay *display,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2)
{
return sqrt (gimp_draw_tool_calc_distance_square (draw_tool, display,
x1, y1, x2, y2));
}
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_blend_tool_draw (GimpDrawTool *draw_tool)
{
GimpBlendTool *blend_tool = GIMP_BLEND_TOOL (draw_tool);
GimpCanvasItem *start_handle_cross, *end_handle_cross;
gimp_draw_tool_add_line (draw_tool,
blend_tool->start_x,
blend_tool->start_y,
blend_tool->end_x,
blend_tool->end_y);
start_handle_cross =
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
blend_tool->start_x,
blend_tool->start_y,
HANDLE_CROSS_DIAMETER,
HANDLE_CROSS_DIAMETER,
GIMP_HANDLE_ANCHOR_CENTER);
end_handle_cross =
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
blend_tool->end_x,
blend_tool->end_y,
HANDLE_CROSS_DIAMETER,
HANDLE_CROSS_DIAMETER,
GIMP_HANDLE_ANCHOR_CENTER);
GimpBlendToolPoint hilight_point;
gboolean start_visible, end_visible;
/* Calculate handle visibility */
if (blend_tool->grabbed_point)
{
start_visible = FALSE;
end_visible = FALSE;
}
else
{
gdouble dist;
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->start_x,
blend_tool->start_y);
start_visible = dist < FULL_HANDLE_THRESHOLD_SQ;
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->end_x,
blend_tool->end_y);
end_visible = dist < FULL_HANDLE_THRESHOLD_SQ;
}
/* Update hilights */
if (blend_tool->grabbed_point)
hilight_point = blend_tool->grabbed_point;
else
hilight_point = gimp_blend_tool_get_point_under_cursor (blend_tool);
if (start_visible)
{
GimpCanvasItem *start_handle_circle;
start_handle_circle =
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CIRCLE,
blend_tool->start_x,
blend_tool->start_y,
HANDLE_DIAMETER,
HANDLE_DIAMETER,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_canvas_item_set_highlight (start_handle_circle,
hilight_point == POINT_START);
}
if (end_visible)
{
GimpCanvasItem *end_handle_circle;
end_handle_circle =
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CIRCLE,
blend_tool->end_x,
blend_tool->end_y,
HANDLE_DIAMETER,
HANDLE_DIAMETER,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_canvas_item_set_highlight (end_handle_circle,
hilight_point == POINT_END);
}
gimp_canvas_item_set_highlight (start_handle_cross,
hilight_point == POINT_START);
gimp_canvas_item_set_highlight (end_handle_cross,
hilight_point == POINT_END);
}
static void
gimp_perspective_clone_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpPerspectiveCloneTool *clone_tool = GIMP_PERSPECTIVE_CLONE_TOOL (tool);
GimpPerspectiveCloneOptions *options;
options = GIMP_PERSPECTIVE_CLONE_TOOL_GET_OPTIONS (tool);
if (options->clone_mode == GIMP_PERSPECTIVE_CLONE_MODE_ADJUST)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
gdouble closest_dist;
gdouble dist;
clone_tool->function = TRANSFORM_HANDLE_NONE;
if (display != tool->display)
return;
dist = gimp_draw_tool_calc_distance_square (draw_tool, display,
coords->x, coords->y,
clone_tool->tx1,
clone_tool->ty1);
closest_dist = dist;
clone_tool->function = TRANSFORM_HANDLE_NW;
dist = gimp_draw_tool_calc_distance_square (draw_tool, display,
coords->x, coords->y,
clone_tool->tx2,
clone_tool->ty2);
if (dist < closest_dist)
{
closest_dist = dist;
clone_tool->function = TRANSFORM_HANDLE_NE;
}
dist = gimp_draw_tool_calc_distance_square (draw_tool, display,
coords->x, coords->y,
clone_tool->tx3,
clone_tool->ty3);
if (dist < closest_dist)
{
closest_dist = dist;
clone_tool->function = TRANSFORM_HANDLE_SW;
}
dist = gimp_draw_tool_calc_distance_square (draw_tool, display,
coords->x, coords->y,
clone_tool->tx4,
clone_tool->ty4);
if (dist < closest_dist)
{
closest_dist = dist;
clone_tool->function = TRANSFORM_HANDLE_SE;
}
}
else
{
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state,
proximity, display);
if (proximity)
{
GimpPaintCore *core = GIMP_PAINT_TOOL (tool)->core;
GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (core);
GimpSourceCore *source_core = GIMP_SOURCE_CORE (core);
if (source_core->src_drawable == NULL)
{
gimp_tool_replace_status (tool, display,
_("Ctrl-Click to set a clone source"));
}
else
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
clone_tool->src_x = source_core->src_x;
clone_tool->src_y = source_core->src_y;
if (! source_core->first_stroke)
{
if (GIMP_SOURCE_OPTIONS (options)->align_mode ==
GIMP_SOURCE_ALIGN_YES)
{
gdouble nnx, nny;
/* Set the coordinates for the reference cross */
gimp_perspective_clone_get_source_point (clone,
coords->x,
coords->y,
&nnx, &nny);
clone_tool->src_x = nnx;
clone_tool->src_y = nny;
}
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
}
}
}
static void
gimp_blend_tool_update_item_hilight (GimpBlendTool *blend_tool)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (blend_tool);
if (gimp_draw_tool_is_active (draw_tool))
{
GimpBlendToolPoint hilight_point;
gboolean start_visible, end_visible;
gint start_diameter, end_diameter;
/* Calculate handle visibility */
if (blend_tool->grabbed_point)
{
start_visible = FALSE;
end_visible = FALSE;
}
else
{
gdouble dist;
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->start_x,
blend_tool->start_y);
start_diameter = calc_handle_diameter (dist);
start_visible = start_diameter > 2;
dist = gimp_draw_tool_calc_distance_square (draw_tool,
draw_tool->display,
blend_tool->mouse_x,
blend_tool->mouse_y,
blend_tool->end_x,
blend_tool->end_y);
end_diameter = calc_handle_diameter (dist);
end_visible = end_diameter > 2;
}
gimp_canvas_item_set_visible (blend_tool->start_handle_circle,
start_visible);
gimp_canvas_item_set_visible (blend_tool->end_handle_circle,
end_visible);
/* Update hilights */
if (blend_tool->grabbed_point)
hilight_point = blend_tool->grabbed_point;
else
hilight_point = gimp_blend_tool_get_point_under_cursor (blend_tool);
if (start_visible)
{
gimp_canvas_item_begin_change (blend_tool->start_handle_circle);
g_object_set (blend_tool->start_handle_circle,
"width", start_diameter,
"height", start_diameter,
NULL);
gimp_canvas_item_end_change (blend_tool->start_handle_circle);
}
if (end_visible)
{
gimp_canvas_item_begin_change (blend_tool->end_handle_circle);
g_object_set (blend_tool->end_handle_circle,
"width", end_diameter,
"height", end_diameter,
NULL);
gimp_canvas_item_end_change (blend_tool->end_handle_circle);
}
gimp_canvas_item_set_highlight (blend_tool->start_handle_circle,
hilight_point == POINT_START);
gimp_canvas_item_set_highlight (blend_tool->start_handle_cross,
hilight_point == POINT_START);
gimp_canvas_item_set_highlight (blend_tool->end_handle_circle,
hilight_point == POINT_END);
gimp_canvas_item_set_highlight (blend_tool->end_handle_cross,
hilight_point == POINT_END);
}
}
