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30934d2395
2003-07-16 Michael Natterer <mitch@gimp.org> * app/tools/gimptransformtool.[ch]: implemented transforming of paths. Cleaned up initialize() and button_press() to activate the tool correctly. Use the transform tool's CREATING state *only* before the first mouse click (when there is no grid displayed). Preview the active path while transforming. Cache the transform direction in the GimpTransformTool struct so we can switch it while previewing the path. Lots of path transform related changes and cleanup.
128 lines
4.9 KiB
C
128 lines
4.9 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMP_TRANSFORM_TOOL_H__
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#define __GIMP_TRANSFORM_TOOL_H__
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#include "gimpdrawtool.h"
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#include "gui/gui-types.h" /* FIXME */
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/* buffer sizes for scaling information strings (for the info dialog) */
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#define MAX_INFO_BUF 40
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#define TRAN_INFO_SIZE 8
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typedef gdouble TransInfo[TRAN_INFO_SIZE];
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#define GIMP_TYPE_TRANSFORM_TOOL (gimp_transform_tool_get_type ())
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#define GIMP_TRANSFORM_TOOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_TRANSFORM_TOOL, GimpTransformTool))
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#define GIMP_TRANSFORM_TOOL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_TRANSFORM_TOOL, GimpTransformToolClass))
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#define GIMP_IS_TRANSFORM_TOOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_TRANSFORM_TOOL))
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#define GIMP_IS_TRANSFORM_TOOL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_TRANSFORM_TOOL))
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#define GIMP_TRANSFORM_TOOL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_TRANSFORM_TOOL, GimpTransformToolClass))
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typedef struct _GimpTransformToolClass GimpTransformToolClass;
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struct _GimpTransformTool
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{
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GimpDrawTool parent_instance;
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gdouble startx; /* starting x coord */
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gdouble starty; /* starting y coord */
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gdouble curx; /* current x coord */
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gdouble cury; /* current y coord */
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gdouble lastx; /* last x coord */
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gdouble lasty; /* last y coord */
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GdkModifierType state; /* state of buttons and keys */
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gint x1, y1; /* upper left hand coordinate */
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gint x2, y2; /* lower right hand coords */
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gdouble cx, cy; /* center point (for rotation) */
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gdouble tx1, ty1; /* transformed coords */
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gdouble tx2, ty2;
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gdouble tx3, ty3;
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gdouble tx4, ty4;
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gdouble tcx, tcy;
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GimpMatrix3 transform; /* transformation matrix */
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TransInfo trans_info; /* transformation info */
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TransInfo old_trans_info; /* for cancelling a drag operation */
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TileManager *original; /* pointer to original tiles */
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TransformAction function; /* current tool activity */
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gboolean use_grid; /* does the tool use the grid */
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gboolean use_center; /* use the center handle */
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gint ngx, ngy; /* number of grid lines in original
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* x and y directions
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*/
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gdouble *grid_coords; /* x and y coordinates of the grid
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* endpoints (a total of (ngx+ngy)*2
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* coordinate pairs)
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*/
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gdouble *tgrid_coords; /* transformed grid_coords */
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gboolean notify_connected;
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GimpTransformType type;
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GimpTransformDirection direction;
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/* transform info dialog */
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const gchar *shell_identifier;
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const gchar *shell_desc;
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const gchar *progress_text;
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InfoDialog *info_dialog;
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};
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struct _GimpTransformToolClass
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{
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GimpDrawToolClass parent_class;
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/* virtual functions */
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void (* dialog) (GimpTransformTool *tool);
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void (* prepare) (GimpTransformTool *tool,
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GimpDisplay *gdisp);
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void (* motion) (GimpTransformTool *tool,
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GimpDisplay *gdisp);
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void (* recalc) (GimpTransformTool *tool,
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GimpDisplay *gdisp);
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TileManager * (* transform) (GimpTransformTool *tool,
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GimpItem *item,
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GimpDisplay *gdisp);
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};
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GType gimp_transform_tool_get_type (void) G_GNUC_CONST;
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void gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool);
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#endif /* __GIMP_TRANSFORM_TOOL_H__ */
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