/**
* gimp_draw_tool_add_crosshair:
* @draw_tool: the #GimpDrawTool
* @position_x: the position of the vertical guide line in image coordinates
* @position_y: the position of the horizontal guide line in image coordinates
*
* This function draws two crossing guide lines across the canvas.
**/
GimpCanvasItem *
gimp_draw_tool_add_crosshair (GimpDrawTool *draw_tool,
gint position_x,
gint position_y)
{
GimpCanvasGroup *group;
group = gimp_draw_tool_add_stroke_group (draw_tool);
gimp_draw_tool_push_group (draw_tool, group);
gimp_draw_tool_add_guide (draw_tool,
GIMP_ORIENTATION_VERTICAL, position_x, FALSE);
gimp_draw_tool_add_guide (draw_tool,
GIMP_ORIENTATION_HORIZONTAL, position_y, FALSE);
gimp_draw_tool_pop_group (draw_tool);
return GIMP_CANVAS_ITEM (group);
}
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));
}
}
static void
gimp_perspective_clone_tool_draw (GimpDrawTool *draw_tool)
{
GimpTool *tool = GIMP_TOOL (draw_tool);
GimpPerspectiveCloneTool *clone_tool = GIMP_PERSPECTIVE_CLONE_TOOL (draw_tool);
GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (GIMP_PAINT_TOOL (tool)->core);
GimpSourceCore *source_core = GIMP_SOURCE_CORE (clone);
GimpPerspectiveCloneOptions *options;
GimpCanvasGroup *stroke_group;
options = GIMP_PERSPECTIVE_CLONE_TOOL_GET_OPTIONS (tool);
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool);
/* draw the bounding box */
gimp_draw_tool_push_group (draw_tool, stroke_group);
gimp_draw_tool_add_line (draw_tool,
clone_tool->tx1, clone_tool->ty1,
clone_tool->tx2, clone_tool->ty2);
gimp_draw_tool_add_line (draw_tool,
clone_tool->tx2, clone_tool->ty2,
clone_tool->tx4, clone_tool->ty4);
gimp_draw_tool_add_line (draw_tool,
clone_tool->tx3, clone_tool->ty3,
clone_tool->tx4, clone_tool->ty4);
gimp_draw_tool_add_line (draw_tool,
clone_tool->tx3, clone_tool->ty3,
clone_tool->tx1, clone_tool->ty1);
gimp_draw_tool_pop_group (draw_tool);
/* draw the tool handles only when they can be used */
if (options->clone_mode == GIMP_PERSPECTIVE_CLONE_MODE_ADJUST)
{
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
clone_tool->tx1, clone_tool->ty1,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
clone_tool->tx2, clone_tool->ty2,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
clone_tool->tx3, clone_tool->ty3,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
clone_tool->tx4, clone_tool->ty4,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_TOOL_HANDLE_SIZE_LARGE,
GIMP_HANDLE_ANCHOR_CENTER);
}
if (source_core->src_drawable && clone_tool->src_display)
{
GimpDisplay *tmp_display;
tmp_display = draw_tool->display;
draw_tool->display = clone_tool->src_display;
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
clone_tool->src_x,
clone_tool->src_y,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_HANDLE_ANCHOR_CENTER);
draw_tool->display = tmp_display;
}
GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
}
static void
gimp_paint_tool_draw (GimpDrawTool *draw_tool)
{
if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (draw_tool)))
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (draw_tool);
GimpPaintCore *core = paint_tool->core;
GimpImage *image = gimp_display_get_image (draw_tool->display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpCanvasItem *outline = NULL;
gboolean line_drawn = FALSE;
gdouble last_x, last_y;
gdouble cur_x, cur_y;
gint off_x, off_y;
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
last_x = core->last_coords.x + off_x;
last_y = core->last_coords.y + off_y;
cur_x = core->cur_coords.x + off_x;
cur_y = core->cur_coords.y + off_y;
if (paint_tool->draw_line &&
! gimp_tool_control_is_active (GIMP_TOOL (draw_tool)->control))
{
GimpCanvasGroup *group;
group = gimp_draw_tool_add_stroke_group (draw_tool);
gimp_draw_tool_push_group (draw_tool, group);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CIRCLE,
last_x, last_y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_add_line (draw_tool,
last_x, last_y,
cur_x, cur_y);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CIRCLE,
cur_x, cur_y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_pop_group (draw_tool);
line_drawn = TRUE;
}
gimp_paint_tool_set_draw_fallback (paint_tool, FALSE, 0.0);
if (paint_tool->draw_brush)
outline = gimp_paint_tool_get_outline (paint_tool,
draw_tool->display,
cur_x, cur_y);
if (outline)
{
gimp_draw_tool_add_item (draw_tool, outline);
g_object_unref (outline);
}
else if (paint_tool->draw_fallback)
{
/* Lets make a sensible fallback cursor
*
* Sensible cursor is
* * crossed to indicate draw point
* * reactive to options alterations
* * not a full circle that would be in the way
*/
gint size = (gint) paint_tool->fallback_size;
#define TICKMARK_ANGLE 48
#define ROTATION_ANGLE G_PI / 4
/* marks for indicating full size */
gimp_draw_tool_add_arc (draw_tool,
FALSE,
cur_x - (size / 2.0),
cur_y - (size / 2.0),
size, size,
ROTATION_ANGLE - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
(2.0 * G_PI) / TICKMARK_ANGLE);
gimp_draw_tool_add_arc (draw_tool,
FALSE,
cur_x - (size / 2.0),
cur_y - (size / 2.0),
size, size,
ROTATION_ANGLE + G_PI / 2 - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
(2.0 * G_PI) / TICKMARK_ANGLE);
gimp_draw_tool_add_arc (draw_tool,
FALSE,
cur_x - (size / 2.0),
cur_y - (size / 2.0),
size, size,
ROTATION_ANGLE + G_PI - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
(2.0 * G_PI) / TICKMARK_ANGLE);
gimp_draw_tool_add_arc (draw_tool,
FALSE,
cur_x - (size / 2.0),
cur_y - (size / 2.0),
size, size,
ROTATION_ANGLE + 3 * G_PI / 2 - (2.0 * G_PI) / (TICKMARK_ANGLE * 2),
(2.0 * G_PI) / TICKMARK_ANGLE);
}
else if (paint_tool->draw_circle)
{
gint size = (gint) paint_tool->circle_size;
/* draw an indicatory circle */
gimp_draw_tool_add_arc (draw_tool,
FALSE,
cur_x - (size / 2.0),
cur_y - (size / 2.0),
size, size,
0.0, (2.0 * G_PI));
}
if (! outline &&
! line_drawn &&
! paint_tool->show_cursor &&
! paint_tool->draw_circle)
{
/* don't leave the user without any indication and draw
* a fallback crosshair
*/
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSSHAIR,
cur_x, cur_y,
GIMP_TOOL_HANDLE_SIZE_CROSSHAIR,
GIMP_TOOL_HANDLE_SIZE_CROSSHAIR,
GIMP_HANDLE_ANCHOR_CENTER);
}
}
GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
}
static void
gimp_perspective_clone_tool_draw (GimpDrawTool *draw_tool)
{
GimpTool *tool = GIMP_TOOL (draw_tool);
GimpPerspectiveCloneTool *clone_tool = GIMP_PERSPECTIVE_CLONE_TOOL (draw_tool);
GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (GIMP_PAINT_TOOL (tool)->core);
GimpSourceCore *source_core = GIMP_SOURCE_CORE (clone);
GimpPerspectiveCloneOptions *options;
options = GIMP_PERSPECTIVE_CLONE_TOOL_GET_OPTIONS (tool);
if (options->clone_mode == GIMP_PERSPECTIVE_CLONE_MODE_ADJUST)
{
if (clone_tool->widget)
{
GimpCanvasItem *item = gimp_tool_widget_get_item (clone_tool->widget);
gimp_draw_tool_add_item (draw_tool, item);
}
}
else
{
GimpCanvasGroup *stroke_group;
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool);
/* draw the bounding box */
gimp_draw_tool_push_group (draw_tool, stroke_group);
gimp_draw_tool_add_line (draw_tool,
clone_tool->trans_info[X0],
clone_tool->trans_info[Y0],
clone_tool->trans_info[X1],
clone_tool->trans_info[Y1]);
gimp_draw_tool_add_line (draw_tool,
clone_tool->trans_info[X1],
clone_tool->trans_info[Y1],
clone_tool->trans_info[X3],
clone_tool->trans_info[Y3]);
gimp_draw_tool_add_line (draw_tool,
clone_tool->trans_info[X2],
clone_tool->trans_info[Y2],
clone_tool->trans_info[X3],
clone_tool->trans_info[Y3]);
gimp_draw_tool_add_line (draw_tool,
clone_tool->trans_info[X2],
clone_tool->trans_info[Y2],
clone_tool->trans_info[X0],
clone_tool->trans_info[Y0]);
gimp_draw_tool_pop_group (draw_tool);
}
if (source_core->src_drawable && clone_tool->src_display)
{
GimpDisplay *tmp_display;
tmp_display = draw_tool->display;
draw_tool->display = clone_tool->src_display;
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
clone_tool->src_x + 0.5,
clone_tool->src_y + 0.5,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_TOOL_HANDLE_SIZE_CROSS,
GIMP_HANDLE_ANCHOR_CENTER);
draw_tool->display = tmp_display;
}
GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
}
