mirror of https://github.com/GNOME/gimp.git
169 lines
7.3 KiB
C
169 lines
7.3 KiB
C
/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
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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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typedef enum
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{
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TRANSFORM_CREATING,
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TRANSFORM_HANDLE_NONE,
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TRANSFORM_HANDLE_NW_P, /* perspective handles */
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TRANSFORM_HANDLE_NE_P,
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TRANSFORM_HANDLE_SW_P,
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TRANSFORM_HANDLE_SE_P,
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TRANSFORM_HANDLE_NW, /* north west */
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TRANSFORM_HANDLE_NE, /* north east */
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TRANSFORM_HANDLE_SW, /* south west */
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TRANSFORM_HANDLE_SE, /* south east */
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TRANSFORM_HANDLE_N, /* north */
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TRANSFORM_HANDLE_S, /* south */
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TRANSFORM_HANDLE_E, /* east */
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TRANSFORM_HANDLE_W, /* west */
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TRANSFORM_HANDLE_CENTER, /* for moving */
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TRANSFORM_HANDLE_PIVOT, /* pivot for rotation and scaling */
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TRANSFORM_HANDLE_N_S, /* shearing handles */
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TRANSFORM_HANDLE_S_S,
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TRANSFORM_HANDLE_E_S,
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TRANSFORM_HANDLE_W_S,
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TRANSFORM_HANDLE_ROTATION, /* rotation handle */
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TRANSFORM_HANDLE_NUM /* keep this last so *handles[] is the right size */
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} TransformAction;
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/* This is not the number of items in the enum above, but the max size
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* of the enums at the top of each transformation tool, stored in
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* trans_info and related
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*/
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#define TRANS_INFO_SIZE 17
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typedef gdouble TransInfo[TRANS_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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#define GIMP_TRANSFORM_TOOL_GET_OPTIONS(t) (GIMP_TRANSFORM_OPTIONS (gimp_tool_get_options (GIMP_TOOL (t))))
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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 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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gdouble previousx; /* previous x coord */
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gdouble previousy; /* previous y coord */
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gdouble mousex; /* x coord where mouse was clicked */
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gdouble mousey; /* y coord where mouse was clicked */
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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 moving) */
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gdouble px, py; /* pivot point (for rotation/scaling) */
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gdouble aspect; /* original aspect ratio */
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gdouble tx1, ty1; /* transformed handle 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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gdouble tpx, tpy;
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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 resetting everything */
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TransInfo *prev_trans_info; /* the current finished state */
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GList *undo_list; /* list of all states,
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head is current == prev_trans_info,
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tail is original == old_trans_info */
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GList *redo_list; /* list of all undone states,
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NULL when nothing undone */
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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_corner_handles; /* uses the corner handles */
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gboolean use_side_handles; /* use handles at midpoints of edges */
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gboolean use_center_handle; /* uses the center handle */
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gboolean use_pivot_handle; /* use the pivot point handle */
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gboolean does_perspective; /* does the tool do non-affine
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transformations */
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GimpCanvasItem *handles[TRANSFORM_HANDLE_NUM];
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const gchar *progress_text;
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GimpToolGui *gui;
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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 (* dialog_update) (GimpTransformTool *tool);
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void (* prepare) (GimpTransformTool *tool);
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void (* motion) (GimpTransformTool *tool);
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void (* recalc_matrix) (GimpTransformTool *tool);
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gchar * (* get_undo_desc) (GimpTransformTool *tool);
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TransformAction (* pick_function) (GimpTransformTool *tool,
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const GimpCoords *coords,
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GdkModifierType state,
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GimpDisplay *display);
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void (* cursor_update) (GimpTransformTool *tr_tool,
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GimpCursorType *cursor,
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GimpCursorModifier *modifier);
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void (* draw_gui) (GimpTransformTool *tool,
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gint handle_w,
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gint handle_h);
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GeglBuffer * (* transform) (GimpTransformTool *tool,
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GimpItem *item,
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GeglBuffer *orig_buffer,
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gint orig_offset_x,
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gint orig_offset_y,
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gint *new_offset_x,
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gint *new_offset_y);
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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_recalc_matrix (GimpTransformTool *tr_tool);
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void gimp_transform_tool_push_internal_undo (GimpTransformTool *tr_tool);
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#endif /* __GIMP_TRANSFORM_TOOL_H__ */
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