/* The GIMP -- an image manipulation program * Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include #include "libgimpmath/gimpmath.h" #include "tools-types.h" #include "base/boundary.h" #include "core/gimpimage.h" #include "core/gimplist.h" #include "vectors/gimpanchor.h" #include "vectors/gimpstroke.h" #include "vectors/gimpvectors.h" #include "display/gimpcanvas.h" #include "display/gimpdisplay.h" #include "display/gimpdisplayshell.h" #include "display/gimpdisplayshell-transform.h" #include "gimpdrawtool.h" static void gimp_draw_tool_class_init (GimpDrawToolClass *klass); static void gimp_draw_tool_init (GimpDrawTool *draw_tool); static void gimp_draw_tool_finalize (GObject *object); static void gimp_draw_tool_control (GimpTool *tool, GimpToolAction action, GimpDisplay *gdisp); static void gimp_draw_tool_draw (GimpDrawTool *draw_tool); static void gimp_draw_tool_real_draw (GimpDrawTool *draw_tool); static inline void gimp_draw_tool_shift_to_north_west (gdouble x, gdouble y, gint handle_width, gint handle_height, GtkAnchorType anchor, gdouble *shifted_x, gdouble *shifted_y); static inline void gimp_draw_tool_shift_to_center (gdouble x, gdouble y, gint handle_width, gint handle_height, GtkAnchorType anchor, gdouble *shifted_x, gdouble *shifted_y); static GimpToolClass *parent_class = NULL; GType gimp_draw_tool_get_type (void) { static GType tool_type = 0; if (! tool_type) { static const GTypeInfo tool_info = { sizeof (GimpDrawToolClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gimp_draw_tool_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GimpDrawTool), 0, /* n_preallocs */ (GInstanceInitFunc) gimp_draw_tool_init, }; tool_type = g_type_register_static (GIMP_TYPE_TOOL, "GimpDrawTool", &tool_info, 0); } return tool_type; } static void gimp_draw_tool_class_init (GimpDrawToolClass *klass) { GObjectClass *object_class; GimpToolClass *tool_class; object_class = G_OBJECT_CLASS (klass); tool_class = GIMP_TOOL_CLASS (klass); parent_class = g_type_class_peek_parent (klass); object_class->finalize = gimp_draw_tool_finalize; tool_class->control = gimp_draw_tool_control; klass->draw = gimp_draw_tool_real_draw; } static void gimp_draw_tool_init (GimpDrawTool *draw_tool) { draw_tool->gdisp = NULL; draw_tool->paused_count = 0; draw_tool->vectors = NULL; draw_tool->transform = NULL; } static void gimp_draw_tool_finalize (GObject *object) { GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (object); if (draw_tool->vectors) { g_list_foreach (draw_tool->vectors, (GFunc) g_object_unref, NULL); g_list_free (draw_tool->vectors); draw_tool->vectors = NULL; } if (draw_tool->transform) { g_free (draw_tool->transform); draw_tool->transform = NULL; } G_OBJECT_CLASS (parent_class)->finalize (object); } static void gimp_draw_tool_control (GimpTool *tool, GimpToolAction action, GimpDisplay *gdisp) { GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool); switch (action) { case PAUSE: gimp_draw_tool_pause (draw_tool); break; case RESUME: gimp_draw_tool_resume (draw_tool); break; case HALT: gimp_draw_tool_stop (draw_tool); break; default: break; } GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp); } static void gimp_draw_tool_draw (GimpDrawTool *draw_tool) { if (draw_tool->paused_count == 0 && draw_tool->gdisp) { GIMP_DRAW_TOOL_GET_CLASS (draw_tool)->draw (draw_tool); } } static void gimp_draw_tool_real_draw (GimpDrawTool *draw_tool) { GList *list; if (! draw_tool->vectors) return; for (list = draw_tool->vectors; list; list = g_list_next (list)) { GimpVectors *vectors = list->data; GimpStroke *stroke = NULL; while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke))) { GArray *coords; gboolean closed; coords = gimp_stroke_interpolate (stroke, 1.0, &closed); if (coords && coords->len) { if (draw_tool->transform) { gint i; for (i = 0; i < coords->len; i++) { GimpCoords *curr = &g_array_index (coords, GimpCoords, i); gimp_matrix3_transform_point (draw_tool->transform, curr->x, curr->y, &curr->x, &curr->y); } } gimp_draw_tool_draw_strokes (draw_tool, &g_array_index (coords, GimpCoords, 0), coords->len, FALSE, FALSE); } if (coords) g_array_free (coords, TRUE); } } } void gimp_draw_tool_start (GimpDrawTool *draw_tool, GimpDisplay *gdisp) { GimpDisplayShell *shell; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); g_return_if_fail (GIMP_IS_DISPLAY (gdisp)); shell = GIMP_DISPLAY_SHELL (gdisp->shell); gimp_draw_tool_stop (draw_tool); draw_tool->gdisp = gdisp; gimp_draw_tool_draw (draw_tool); } void gimp_draw_tool_stop (GimpDrawTool *draw_tool) { g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); gimp_draw_tool_draw (draw_tool); draw_tool->gdisp = NULL; } gboolean gimp_draw_tool_is_active (GimpDrawTool *draw_tool) { g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE); return draw_tool->gdisp != NULL; } void gimp_draw_tool_pause (GimpDrawTool *draw_tool) { g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); gimp_draw_tool_draw (draw_tool); draw_tool->paused_count++; } void gimp_draw_tool_resume (GimpDrawTool *draw_tool) { g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); if (draw_tool->paused_count > 0) { draw_tool->paused_count--; gimp_draw_tool_draw (draw_tool); } else { g_warning ("gimp_draw_tool_resume(): " "called with draw_tool->paused_count == 0"); } } void gimp_draw_tool_set_vectors (GimpDrawTool *draw_tool, GList *vectors) { g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); gimp_draw_tool_pause (draw_tool); if (draw_tool->vectors) { g_list_foreach (draw_tool->vectors, (GFunc) g_object_unref, NULL); g_list_free (draw_tool->vectors); draw_tool->vectors = NULL; } if (vectors) { draw_tool->vectors = g_list_copy (vectors); g_list_foreach (draw_tool->vectors, (GFunc) g_object_ref, NULL); } gimp_draw_tool_resume (draw_tool); } void gimp_draw_tool_set_transform (GimpDrawTool *draw_tool, GimpMatrix3 *transform) { g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); gimp_draw_tool_pause (draw_tool); if (draw_tool->transform) { g_free (draw_tool->transform); draw_tool->transform = NULL; } if (transform) draw_tool->transform = g_memdup (transform, sizeof (GimpMatrix3)); gimp_draw_tool_resume (draw_tool); } gdouble gimp_draw_tool_calc_distance (GimpDrawTool *draw_tool, GimpDisplay *gdisp, gdouble x1, gdouble y1, gdouble x2, gdouble y2) { GimpDisplayShell *shell; gdouble tx1, ty1; gdouble tx2, ty2; g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), 0.0); g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), 0.0); shell = GIMP_DISPLAY_SHELL (gdisp->shell); gimp_display_shell_transform_xy_f (shell, x1, y1, &tx1, &ty1, FALSE); gimp_display_shell_transform_xy_f (shell, x2, y2, &tx2, &ty2, FALSE); return sqrt (SQR (tx2 - tx1) + SQR (ty2 - ty1)); } gboolean gimp_draw_tool_in_radius (GimpDrawTool *draw_tool, GimpDisplay *gdisp, gdouble x1, gdouble y1, gdouble x2, gdouble y2, gint radius) { GimpDisplayShell *shell; gdouble tx1, ty1; gdouble tx2, ty2; g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE); g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), FALSE); shell = GIMP_DISPLAY_SHELL (gdisp->shell); gimp_display_shell_transform_xy_f (shell, x1, y1, &tx1, &ty1, FALSE); gimp_display_shell_transform_xy_f (shell, x2, y2, &tx2, &ty2, FALSE); return (SQR (tx2 - tx1) + SQR (ty2 - ty1)) < SQR (radius); } void gimp_draw_tool_draw_line (GimpDrawTool *draw_tool, gdouble x1, gdouble y1, gdouble x2, gdouble y2, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx1, ty1; gdouble tx2, ty2; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); gimp_display_shell_transform_xy_f (shell, x1, y1, &tx1, &ty1, use_offsets); gimp_display_shell_transform_xy_f (shell, x2, y2, &tx2, &ty2, use_offsets); gimp_canvas_draw_line (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, RINT (tx1), RINT (ty1), RINT (tx2), RINT (ty2)); } void gimp_draw_tool_draw_dashed_line (GimpDrawTool *draw_tool, gdouble x1, gdouble y1, gdouble x2, gdouble y2, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx1, ty1; gdouble tx2, ty2; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); gimp_display_shell_transform_xy_f (shell, x1, y1, &tx1, &ty1, use_offsets); gimp_display_shell_transform_xy_f (shell, x2, y2, &tx2, &ty2, use_offsets); gimp_canvas_draw_line (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR_DASHED, RINT (tx1), RINT (ty1), RINT (tx2), RINT (ty2)); } void gimp_draw_tool_draw_rectangle (GimpDrawTool *draw_tool, gboolean filled, gdouble x, gdouble y, gdouble width, gdouble height, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx1, ty1; gdouble tx2, ty2; guint w, h; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); tx1 = MIN (x, x + width); ty1 = MIN (y, y + height); tx2 = MAX (x, x + width); ty2 = MAX (y, y + height); gimp_display_shell_transform_xy_f (shell, tx1, ty1, &tx1, &ty1, use_offsets); gimp_display_shell_transform_xy_f (shell, tx2, ty2, &tx2, &ty2, use_offsets); tx1 = CLAMP (tx1, -1, shell->disp_width + 1); ty1 = CLAMP (ty1, -1, shell->disp_height + 1); tx2 = CLAMP (tx2, -1, shell->disp_width + 1); ty2 = CLAMP (ty2, -1, shell->disp_height + 1); tx2 -= tx1; ty2 -= ty1; w = (tx2 >= 0.0) ? RINT (tx2) : 0; h = (ty2 >= 0.0) ? RINT (ty2) : 0; if (w > 0 && h > 0) gimp_canvas_draw_rectangle (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, filled, RINT (tx1), RINT (ty1), w - 1, h - 1); } void gimp_draw_tool_draw_arc (GimpDrawTool *draw_tool, gboolean filled, gdouble x, gdouble y, gdouble width, gdouble height, gint angle1, gint angle2, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx1, ty1; gdouble tx2, ty2; guint w, h; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); tx1 = MIN (x, x + width); ty1 = MIN (y, y + height); tx2 = MAX (x, x + width); ty2 = MAX (y, y + height); gimp_display_shell_transform_xy_f (shell, tx1, ty1, &tx1, &ty1, use_offsets); gimp_display_shell_transform_xy_f (shell, tx2, ty2, &tx2, &ty2, use_offsets); tx2 -= tx1; ty2 -= ty1; w = (tx2 >= 0.0) ? RINT (tx2) : 0; h = (ty2 >= 0.0) ? RINT (ty2) : 0; if (w > 0 && h > 0) { if (w != 1 && h != 1) { gimp_canvas_draw_arc (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, filled, RINT (tx1), RINT (ty1), w - 1, h - 1, angle1, angle2); } else { /* work around the problem of an 1xN or Nx1 arc not being shown properly */ gimp_canvas_draw_rectangle (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, filled, RINT (tx1), RINT (ty1), w - 1, h - 1); } } } void gimp_draw_tool_draw_rectangle_by_anchor (GimpDrawTool *draw_tool, gboolean filled, gdouble x, gdouble y, gint width, gint height, GtkAnchorType anchor, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx, ty; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); gimp_display_shell_transform_xy_f (shell, x, y, &tx, &ty, use_offsets); gimp_draw_tool_shift_to_north_west (tx, ty, width, height, anchor, &tx, &ty); if (filled) { width++; height++; } gimp_canvas_draw_rectangle (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, filled, RINT (tx), RINT (ty), width, height); } void gimp_draw_tool_draw_arc_by_anchor (GimpDrawTool *draw_tool, gboolean filled, gdouble x, gdouble y, gint radius_x, gint radius_y, gint angle1, gint angle2, GtkAnchorType anchor, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx, ty; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); gimp_display_shell_transform_xy_f (shell, x, y, &tx, &ty, use_offsets); /* well... */ radius_x *= 2; radius_y *= 2; gimp_draw_tool_shift_to_north_west (tx, ty, radius_x, radius_y, anchor, &tx, &ty); if (filled) { radius_x += 1; radius_y += 1; } gimp_canvas_draw_arc (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, filled, RINT (tx), RINT (ty), radius_x, radius_y, angle1, angle2); } void gimp_draw_tool_draw_cross_by_anchor (GimpDrawTool *draw_tool, gdouble x, gdouble y, gint width, gint height, GtkAnchorType anchor, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx, ty; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); gimp_display_shell_transform_xy_f (shell, x, y, &tx, &ty, use_offsets); gimp_draw_tool_shift_to_center (tx, ty, width, height, anchor, &tx, &ty); gimp_canvas_draw_line (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, RINT (tx), RINT (ty) - (height >> 1), RINT (tx), RINT (ty) + (height >> 1)); gimp_canvas_draw_line (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, RINT (tx) - (width >> 1), RINT (ty), RINT (tx) + (width >> 1), RINT (ty)); } void gimp_draw_tool_draw_handle (GimpDrawTool *draw_tool, GimpHandleType type, gdouble x, gdouble y, gint width, gint height, GtkAnchorType anchor, gboolean use_offsets) { g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); switch (type) { case GIMP_HANDLE_SQUARE: gimp_draw_tool_draw_rectangle_by_anchor (draw_tool, FALSE, x, y, width, height, anchor, use_offsets); break; case GIMP_HANDLE_FILLED_SQUARE: gimp_draw_tool_draw_rectangle_by_anchor (draw_tool, TRUE, x, y, width, height, anchor, use_offsets); break; case GIMP_HANDLE_CIRCLE: gimp_draw_tool_draw_arc_by_anchor (draw_tool, FALSE, x, y, width >> 1, height >> 1, 0, 360 * 64, anchor, use_offsets); break; case GIMP_HANDLE_FILLED_CIRCLE: gimp_draw_tool_draw_arc_by_anchor (draw_tool, TRUE, x, y, width >> 1, height >> 1, 0, 360 * 64, anchor, use_offsets); break; case GIMP_HANDLE_CROSS: gimp_draw_tool_draw_cross_by_anchor (draw_tool, x, y, width, height, anchor, use_offsets); break; default: g_warning ("%s: invalid handle type %d", G_GNUC_PRETTY_FUNCTION, type); break; } } gboolean gimp_draw_tool_on_handle (GimpDrawTool *draw_tool, GimpDisplay *gdisp, gdouble x, gdouble y, GimpHandleType type, gdouble handle_x, gdouble handle_y, gint width, gint height, GtkAnchorType anchor, gboolean use_offsets) { GimpDisplayShell *shell; gdouble tx, ty; gdouble handle_tx, handle_ty; g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE); g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), FALSE); shell = GIMP_DISPLAY_SHELL (gdisp->shell); gimp_display_shell_transform_xy_f (shell, x, y, &tx, &ty, use_offsets); gimp_display_shell_transform_xy_f (shell, handle_x, handle_y, &handle_tx, &handle_ty, use_offsets); switch (type) { case GIMP_HANDLE_SQUARE: case GIMP_HANDLE_FILLED_SQUARE: case GIMP_HANDLE_CROSS: gimp_draw_tool_shift_to_north_west (handle_tx, handle_ty, width, height, anchor, &handle_tx, &handle_ty); return (tx == CLAMP (tx, handle_tx, handle_tx + width) && ty == CLAMP (ty, handle_ty, handle_ty + height)); case GIMP_HANDLE_CIRCLE: case GIMP_HANDLE_FILLED_CIRCLE: gimp_draw_tool_shift_to_center (handle_tx, handle_ty, width, height, anchor, &handle_tx, &handle_ty); /* FIXME */ if (width != height) width = (width + height) / 2; width /= 2; return ((SQR (handle_tx - tx) + SQR (handle_ty - ty)) < SQR (width)); default: g_warning ("%s: invalid handle type %d", G_GNUC_PRETTY_FUNCTION, type); break; } return FALSE; } gboolean gimp_draw_tool_on_vectors_handle (GimpDrawTool *draw_tool, GimpDisplay *gdisp, GimpVectors *vectors, GimpCoords *coord, gint width, gint height, GimpAnchorType preferred, gboolean exclusive, GimpAnchor **ret_anchor, GimpStroke **ret_stroke) { GimpStroke *stroke = NULL; GimpStroke *pref_stroke = NULL; GimpAnchor *anchor = NULL; GimpAnchor *pref_anchor = NULL; GList *list; gdouble dx, dy; gdouble pref_mindist = -1; gdouble mindist = -1; g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE); g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), FALSE); g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE); g_return_val_if_fail (coord != NULL, FALSE); if (ret_anchor) *ret_anchor = NULL; if (ret_stroke) *ret_stroke = NULL; while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke))) { GList *anchor_list; anchor_list = gimp_stroke_get_draw_anchors (stroke); list = gimp_stroke_get_draw_controls (stroke); anchor_list = g_list_concat (anchor_list, list); while (anchor_list) { dx = coord->x - GIMP_ANCHOR (anchor_list->data)->position.x; dy = coord->y - GIMP_ANCHOR (anchor_list->data)->position.y; if (mindist < 0 || mindist > dx * dx + dy * dy) { mindist = dx * dx + dy * dy; anchor = GIMP_ANCHOR (anchor_list->data); if (ret_stroke) *ret_stroke = stroke; } if ((pref_mindist < 0 || pref_mindist > dx * dx + dy * dy) && GIMP_ANCHOR (anchor_list->data)->type == preferred) { pref_mindist = dx * dx + dy * dy; pref_anchor = GIMP_ANCHOR (anchor_list->data); pref_stroke = stroke; } anchor_list = anchor_list->next; } g_list_free (anchor_list); } /* If the data passed into ret_anchor is a preferred anchor, return it. */ if (ret_anchor && *ret_anchor && gimp_draw_tool_on_handle (draw_tool, gdisp, coord->x, coord->y, GIMP_HANDLE_CIRCLE, (*ret_anchor)->position.x, (*ret_anchor)->position.y, width, height, GTK_ANCHOR_CENTER, FALSE) && (*ret_anchor)->type == preferred) { if (ret_stroke) *ret_stroke = pref_stroke; return TRUE; } if (pref_anchor && gimp_draw_tool_on_handle (draw_tool, gdisp, coord->x, coord->y, GIMP_HANDLE_CIRCLE, pref_anchor->position.x, pref_anchor->position.y, width, height, GTK_ANCHOR_CENTER, FALSE)) { if (ret_anchor) *ret_anchor = pref_anchor; if (ret_stroke) *ret_stroke = pref_stroke; return TRUE; } else if (!exclusive && anchor && gimp_draw_tool_on_handle (draw_tool, gdisp, coord->x, coord->y, GIMP_HANDLE_CIRCLE, anchor->position.x, anchor->position.y, width, height, GTK_ANCHOR_CENTER, FALSE)) { if (ret_anchor) *ret_anchor = anchor; /* *ret_stroke already set correctly. */ return TRUE; } if (ret_anchor) *ret_anchor = NULL; if (ret_stroke) *ret_stroke = NULL; return FALSE; } gboolean gimp_draw_tool_on_vectors_curve (GimpDrawTool *draw_tool, GimpDisplay *gdisp, GimpVectors *vectors, GimpCoords *coord, gint width, gint height, GimpCoords *ret_coords, gdouble *ret_pos, GimpAnchor **ret_segment_start, GimpAnchor **ret_segment_end, GimpStroke **ret_stroke) { GimpStroke *stroke = NULL; GimpAnchor *segment_start; GimpAnchor *segment_end; GimpCoords min_coords, cur_coords; gdouble min_dist, cur_dist, cur_pos; g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE); g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), FALSE); g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE); g_return_val_if_fail (coord != NULL, FALSE); if (ret_coords) *ret_coords = *coord; if (ret_pos) *ret_pos = -1.0; if (ret_segment_start) *ret_segment_start = NULL; if (ret_segment_start) *ret_segment_end = NULL; if (ret_stroke) *ret_stroke = NULL; min_dist = -1.0; while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke))) { cur_dist = gimp_stroke_nearest_point_get (stroke, coord, 1.0, &cur_coords, &segment_start, &segment_end, &cur_pos); if (cur_dist >= 0 && (min_dist < 0 || cur_dist < min_dist)) { min_dist = cur_dist; min_coords = cur_coords; if (ret_coords) *ret_coords = cur_coords; if (ret_pos) *ret_pos = cur_pos; if (ret_segment_start) *ret_segment_start = segment_start; if (ret_segment_end) *ret_segment_end = segment_end; if (ret_stroke) *ret_stroke = stroke; } } if (min_dist >= 0 && gimp_draw_tool_on_handle (draw_tool, gdisp, coord->x, coord->y, GIMP_HANDLE_CIRCLE, min_coords.x, min_coords.y, width, height, GTK_ANCHOR_CENTER, FALSE)) { return TRUE; } return FALSE; } gboolean gimp_draw_tool_on_vectors (GimpDrawTool *draw_tool, GimpDisplay *gdisp, GimpCoords *coords, gint width, gint height, GimpCoords *ret_coords, gdouble *ret_pos, GimpAnchor **ret_segment_start, GimpAnchor **ret_segment_end, GimpStroke **ret_stroke, GimpVectors **ret_vectors) { GList *list; GimpVectors *vectors; gboolean on_curve; if (ret_coords) *ret_coords = *coords; if (ret_pos) *ret_pos = -1.0; if (ret_segment_start) *ret_segment_start = NULL; if (ret_segment_end) *ret_segment_end = NULL; if (ret_stroke) *ret_stroke = NULL; if (ret_vectors) *ret_vectors = NULL; for (list = GIMP_LIST (gdisp->gimage->vectors)->list; list; list = g_list_next (list)) { vectors = list->data; if (! gimp_item_get_visible (GIMP_ITEM (vectors))) continue; on_curve = gimp_draw_tool_on_vectors_curve (draw_tool, gdisp, vectors, coords, width, height, ret_coords, ret_pos, ret_segment_start, ret_segment_end, ret_stroke); if (on_curve) { if (ret_vectors) *ret_vectors = vectors; return TRUE; } } return FALSE; } void gimp_draw_tool_draw_lines (GimpDrawTool *draw_tool, gdouble *points, gint n_points, gboolean filled, gboolean use_offsets) { GimpDisplayShell *shell; GdkPoint *coords; gint i; gdouble sx, sy; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); coords = g_new (GdkPoint, n_points); for (i = 0; i < n_points ; i++) { gimp_display_shell_transform_xy_f (shell, points[i*2], points[i*2+1], &sx, &sy, use_offsets); coords[i].x = ROUND (sx); coords[i].y = ROUND (sy); } if (filled) { gimp_canvas_draw_polygon (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, TRUE, coords, n_points); } else { gimp_canvas_draw_lines (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, coords, n_points); } g_free (coords); } void gimp_draw_tool_draw_strokes (GimpDrawTool *draw_tool, GimpCoords *points, gint n_points, gboolean filled, gboolean use_offsets) { GimpDisplayShell *shell; GdkPoint *coords; gint i; gdouble sx, sy; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); coords = g_new (GdkPoint, n_points); for (i = 0; i < n_points ; i++) { gimp_display_shell_transform_xy_f (shell, points[i].x, points[i].y, &sx, &sy, use_offsets); coords[i].x = ROUND (sx); coords[i].y = ROUND (sy); } if (filled) { gimp_canvas_draw_polygon (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, TRUE, coords, n_points); } else { gimp_canvas_draw_lines (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, coords, n_points); } g_free (coords); } void gimp_draw_tool_draw_boundary (GimpDrawTool *draw_tool, const BoundSeg *bound_segs, gint n_bound_segs, gdouble offset_x, gdouble offset_y) { GimpDisplayShell *shell; GdkSegment *gdk_segs; gint n_gdk_segs; gint xmax, ymax; gdouble x, y; gint i; g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool)); g_return_if_fail (n_bound_segs > 0 || bound_segs == NULL); shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell); gdk_segs = g_new0 (GdkSegment, n_bound_segs); n_gdk_segs = 0; xmax = shell->disp_width + 1; ymax = shell->disp_height + 1; for (i = 0; i < n_bound_segs; i++) { gimp_display_shell_transform_xy_f (shell, bound_segs[i].x1 + offset_x, bound_segs[i].y1 + offset_y, &x, &y, FALSE); gdk_segs[n_gdk_segs].x1 = RINT (CLAMP (x, -1, xmax)); gdk_segs[n_gdk_segs].y1 = RINT (CLAMP (y, -1, ymax)); gimp_display_shell_transform_xy_f (shell, bound_segs[i].x2 + offset_x, bound_segs[i].y2 + offset_y, &x, &y, FALSE); gdk_segs[n_gdk_segs].x2 = RINT (CLAMP (x, -1, xmax)); gdk_segs[n_gdk_segs].y2 = RINT (CLAMP (y, -1, ymax)); if (gdk_segs[n_gdk_segs].x1 == gdk_segs[n_gdk_segs].x2 && gdk_segs[n_gdk_segs].y1 == gdk_segs[n_gdk_segs].y2) continue; /* If this segment is a closing segment && the segments lie inside * the region, OR if this is an opening segment and the segments * lie outside the region... * we need to transform it by one display pixel */ if (! bound_segs[i].open) { /* If it is vertical */ if (gdk_segs[n_gdk_segs].x1 == gdk_segs[n_gdk_segs].x2) { gdk_segs[n_gdk_segs].x1 -= 1; gdk_segs[n_gdk_segs].x2 -= 1; } else { gdk_segs[n_gdk_segs].y1 -= 1; gdk_segs[n_gdk_segs].y2 -= 1; } } n_gdk_segs++; } gimp_canvas_draw_segments (GIMP_CANVAS (shell->canvas), GIMP_CANVAS_STYLE_XOR, gdk_segs, n_gdk_segs); g_free (gdk_segs); } /* private functions */ static inline void gimp_draw_tool_shift_to_north_west (gdouble x, gdouble y, gint handle_width, gint handle_height, GtkAnchorType anchor, gdouble *shifted_x, gdouble *shifted_y) { switch (anchor) { case GTK_ANCHOR_CENTER: x -= (handle_width >> 1); y -= (handle_height >> 1); break; case GTK_ANCHOR_NORTH: x -= (handle_width >> 1); break; case GTK_ANCHOR_NORTH_WEST: /* nothing, this is the default */ break; case GTK_ANCHOR_NORTH_EAST: x -= handle_width; break; case GTK_ANCHOR_SOUTH: x -= (handle_width >> 1); y -= handle_height; break; case GTK_ANCHOR_SOUTH_WEST: y -= handle_height; break; case GTK_ANCHOR_SOUTH_EAST: x -= handle_width; y -= handle_height; break; case GTK_ANCHOR_WEST: y -= (handle_height >> 1); break; case GTK_ANCHOR_EAST: x -= handle_width; y -= (handle_height >> 1); break; default: break; } if (shifted_x) *shifted_x = x; if (shifted_y) *shifted_y = y; } static inline void gimp_draw_tool_shift_to_center (gdouble x, gdouble y, gint handle_width, gint handle_height, GtkAnchorType anchor, gdouble *shifted_x, gdouble *shifted_y) { switch (anchor) { case GTK_ANCHOR_CENTER: /* nothing, this is the default */ break; case GTK_ANCHOR_NORTH: y += (handle_height >> 1); break; case GTK_ANCHOR_NORTH_WEST: x += (handle_width >> 1); y += (handle_height >> 1); break; case GTK_ANCHOR_NORTH_EAST: x -= (handle_width >> 1); y += (handle_height >> 1); break; case GTK_ANCHOR_SOUTH: y -= (handle_height >> 1); break; case GTK_ANCHOR_SOUTH_WEST: x += (handle_width >> 1); y -= (handle_height >> 1); break; case GTK_ANCHOR_SOUTH_EAST: x -= (handle_width >> 1); y -= (handle_height >> 1); break; case GTK_ANCHOR_WEST: x += (handle_width >> 1); break; case GTK_ANCHOR_EAST: x -= (handle_width >> 1); break; default: break; } if (shifted_x) *shifted_x = x; if (shifted_y) *shifted_y = y; }