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- /* The GIMP -- an image manipulation program
- * Copyright (C) 1995 Spencer Kimball and Peter Mattis
- *
- * 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 <stdlib.h>
-
- #include <gtk/gtk.h>
-
- #include "apptypes.h"
- #include "appenv.h"
- #include "cursorutil.h"
- #include "draw_core.h"
- #include "edit_selection.h"
- #include "floating_sel.h"
- #include "gimage_mask.h"
- #include "gdisplay.h"
- #include "gdisplay_ops.h"
- #include "move.h"
- #include "undo.h"
-
- #include "config.h"
- #include "libgimp/gimpintl.h"
-
- /* the move structures */
-
- typedef struct _MoveTool MoveTool;
- struct _MoveTool
- {
- Layer *layer;
- Guide *guide;
- GDisplay *disp;
- };
-
-
- /* the move tool options */
- static ToolOptions *move_options = NULL;
-
- /* local variables */
- static GdkGC *move_gc = NULL;
-
-
- /* move tool action functions */
- static void move_tool_button_press (Tool *, GdkEventButton *, gpointer);
- static void move_tool_button_release (Tool *, GdkEventButton *, gpointer);
- static void move_tool_motion (Tool *, GdkEventMotion *, gpointer);
- static void move_tool_cursor_update (Tool *, GdkEventMotion *, gpointer);
- static void move_tool_control (Tool *, ToolAction, gpointer);
-
- static void move_create_gc (GDisplay *gdisp);
-
-
- /* move action functions */
-
- static void
- move_tool_button_press (Tool *tool,
- GdkEventButton *bevent,
- gpointer gdisp_ptr)
- {
- GDisplay *gdisp;
- MoveTool *move;
- Layer *layer;
- Guide *guide;
- gint x, y;
-
- gdisp = (GDisplay *) gdisp_ptr;
- move = (MoveTool *) tool->private;
-
- tool->gdisp_ptr = gdisp_ptr;
- move->layer = NULL;
- move->guide = NULL;
- move->disp = NULL;
-
- gdisplay_untransform_coords (gdisp, bevent->x, bevent->y, &x, &y, FALSE, FALSE);
-
- if (bevent->state & GDK_MOD1_MASK &&
- !gimage_mask_is_empty (gdisp->gimage))
- {
- init_edit_selection (tool, gdisp_ptr, bevent, EDIT_MASK_TRANSLATE);
- tool->state = ACTIVE;
- }
- else if (bevent->state & GDK_SHIFT_MASK)
- {
- init_edit_selection (tool, gdisp_ptr, bevent, EDIT_LAYER_TRANSLATE);
- tool->state = ACTIVE;
- }
- else
- {
- if (gdisp->draw_guides &&
- (guide = gdisplay_find_guide (gdisp, bevent->x, bevent->y)))
- {
- undo_push_guide (gdisp->gimage, guide);
-
- gdisplays_expose_guide (gdisp->gimage, guide);
- gimage_remove_guide (gdisp->gimage, guide);
- gdisplay_flush (gdisp);
- gimage_add_guide (gdisp->gimage, guide);
-
- move->guide = guide;
- move->disp = gdisp;
-
- tool->scroll_lock = TRUE;
- tool->state = ACTIVE;
-
- move_tool_motion (tool, NULL, gdisp);
- }
- else if ((layer = gimage_pick_correlate_layer (gdisp->gimage, x, y)))
- {
- /* If there is a floating selection, and this aint it,
- * use the move tool
- */
- if (gimage_floating_sel (gdisp->gimage) &&
- !layer_is_floating_sel (layer))
- {
- move->layer = gimage_floating_sel (gdisp->gimage);
- }
- /* Otherwise, init the edit selection */
- else
- {
- gimage_set_active_layer (gdisp->gimage, layer);
- init_edit_selection (tool, gdisp_ptr, bevent, EDIT_LAYER_TRANSLATE);
- }
- tool->state = ACTIVE;
- }
- }
-
- /* if we've got an active tool grab the pointer */
- if (tool->state == ACTIVE)
- {
- gdk_pointer_grab (gdisp->canvas->window, FALSE,
- GDK_POINTER_MOTION_HINT_MASK |
- GDK_BUTTON1_MOTION_MASK |
- GDK_BUTTON_RELEASE_MASK,
- NULL, NULL, bevent->time);
- }
- }
-
- static void
- move_draw_guide (GDisplay *gdisp,
- Guide *guide)
- {
- gint x1, y1;
- gint x2, y2;
- gint w, h;
- gint x, y;
-
- if (!move_gc)
- move_create_gc (gdisp);
-
- if (guide->position == -1)
- return;
-
- gdisplay_transform_coords (gdisp, gdisp->gimage->width,
- gdisp->gimage->height, &x2, &y2, FALSE);
-
- gdk_window_get_size (gdisp->canvas->window, &w, &h);
-
- switch (guide->orientation)
- {
- case ORIENTATION_HORIZONTAL:
- gdisplay_transform_coords (gdisp, 0, guide->position, &x1, &y, FALSE);
- if (x1 < 0) x1 = 0;
- if (x2 > w) x2 = w;
-
- gdk_draw_line (gdisp->canvas->window, move_gc, x1, y, x2, y);
- break;
-
- case ORIENTATION_VERTICAL:
- gdisplay_transform_coords (gdisp, guide->position, 0, &x, &y1, FALSE);
- if (y1 < 0) y1 = 0;
- if (y2 > h) y2 = h;
-
- gdk_draw_line (gdisp->canvas->window, move_gc, x, y1, x, y2);
- break;
-
- default:
- g_warning ("mdg / BAD FALLTHROUGH");
- }
- }
-
- static void
- move_tool_button_release (Tool *tool,
- GdkEventButton *bevent,
- gpointer gdisp_ptr)
- {
- MoveTool *move;
- GDisplay *gdisp;
- gboolean delete_guide;
- gint x1, y1;
- gint x2, y2;
-
- gdisp = (GDisplay *) gdisp_ptr;
- move = (MoveTool *) tool->private;
-
- gdk_flush ();
-
- tool->state = INACTIVE;
- gdk_pointer_ungrab (bevent->time);
-
- if (move->guide)
- {
- tool->scroll_lock = FALSE;
-
- delete_guide = FALSE;
- gdisplay_untransform_coords (gdisp, 0, 0, &x1, &y1, FALSE, FALSE);
- gdisplay_untransform_coords (gdisp, gdisp->disp_width, gdisp->disp_height,
- &x2, &y2, FALSE, FALSE);
-
- if (x1 < 0) x1 = 0;
- if (y1 < 0) y1 = 0;
- if (x2 > gdisp->gimage->width) x2 = gdisp->gimage->width;
- if (y2 > gdisp->gimage->height) y2 = gdisp->gimage->height;
-
- switch (move->guide->orientation)
- {
- case ORIENTATION_HORIZONTAL:
- if ((move->guide->position < y1) || (move->guide->position > y2))
- delete_guide = TRUE;
- break;
- case ORIENTATION_VERTICAL:
- if ((move->guide->position < x1) || (move->guide->position > x2))
- delete_guide = TRUE;
- break;
- }
-
- gdisplays_expose_guide (gdisp->gimage, move->guide);
-
- if (delete_guide)
- {
- move_draw_guide (gdisp, move->guide);
- gimp_image_delete_guide (gdisp->gimage, move->guide);
- move->guide = NULL;
- move->disp = NULL;
- }
- else
- {
- move_tool_motion (tool, NULL, gdisp_ptr);
- }
-
- selection_resume (gdisp->select);
- gdisplays_flush ();
-
- if (move->guide)
- gdisplay_draw_guide (gdisp, move->guide, TRUE);
- }
- else
- {
- /* Take care of the case where the user "cancels" the action */
- if (! (bevent->state & GDK_BUTTON3_MASK))
- {
- if (move->layer)
- {
- floating_sel_anchor (move->layer);
- gdisplays_flush ();
- }
- }
- }
- }
-
- static void
- move_tool_motion (Tool *tool,
- GdkEventMotion *mevent,
- gpointer gdisp_ptr)
-
- {
- MoveTool *move;
- GDisplay *gdisp;
- gint x, y;
-
- move = (MoveTool *) tool->private;
- gdisp = (GDisplay *) gdisp_ptr;
-
- if (move->guide)
- {
- move_draw_guide (gdisp, move->guide);
-
- if (mevent && mevent->window != gdisp->canvas->window)
- {
- move->guide->position = -1;
- return;
- }
-
- if (mevent)
- {
- gdisplay_untransform_coords (gdisp, mevent->x, mevent->y,
- &x, &y, TRUE, FALSE);
-
- if (move->guide->orientation == ORIENTATION_HORIZONTAL)
- move->guide->position = y;
- else
- move->guide->position = x;
-
- move_draw_guide (gdisp, move->guide);
- }
- }
- }
-
- static void
- move_tool_cursor_update (Tool *tool,
- GdkEventMotion *mevent,
- gpointer gdisp_ptr)
- {
- MoveTool *move;
- GDisplay *gdisp;
- Guide *guide;
- Layer *layer;
- gint x, y;
-
- move = (MoveTool *) tool->private;
- gdisp = (GDisplay *) gdisp_ptr;
-
- gdisplay_untransform_coords (gdisp, mevent->x, mevent->y, &x, &y,
- FALSE, FALSE);
-
- if (mevent->state & GDK_MOD1_MASK &&
- !gimage_mask_is_empty (gdisp->gimage))
- {
- gdisplay_install_tool_cursor (gdisp, GIMP_MOUSE_CURSOR,
- RECT_SELECT,
- CURSOR_MODIFIER_MOVE,
- FALSE);
- }
- else if (mevent->state & GDK_SHIFT_MASK)
- {
- gdisplay_install_tool_cursor (gdisp, GIMP_MOUSE_CURSOR,
- MOVE,
- CURSOR_MODIFIER_NONE,
- FALSE);
- }
- else
- {
- if (gdisp->draw_guides &&
- (guide = gdisplay_find_guide (gdisp, mevent->x, mevent->y)))
- {
- tool->gdisp_ptr = gdisp_ptr;
- gdisplay_install_tool_cursor (gdisp, GDK_HAND2,
- TOOL_TYPE_NONE,
- CURSOR_MODIFIER_HAND,
- FALSE);
-
- if (tool->state != ACTIVE)
- {
- if (move->guide)
- {
- gdisp = gdisplays_check_valid (move->disp, move->disp->gimage);
- if (gdisp)
- gdisplay_draw_guide (gdisp, move->guide, FALSE);
- }
-
- gdisp = gdisp_ptr;
- gdisplay_draw_guide (gdisp, guide, TRUE);
- move->guide = guide;
- move->disp = gdisp;
- }
- }
- else if ((layer = gimage_pick_correlate_layer (gdisp->gimage, x, y)))
- {
- /* if there is a floating selection, and this aint it... */
- if (gimage_floating_sel (gdisp->gimage) &&
- !layer_is_floating_sel (layer))
- gdisplay_install_tool_cursor (gdisp, GIMP_MOUSE_CURSOR,
- RECT_SELECT,
- CURSOR_MODIFIER_ANCHOR,
- FALSE);
- else if (layer == gdisp->gimage->active_layer)
- gdisplay_install_tool_cursor (gdisp, GIMP_MOUSE_CURSOR,
- MOVE,
- CURSOR_MODIFIER_NONE,
- FALSE);
- else
- gdisplay_install_tool_cursor (gdisp, GDK_HAND2,
- TOOL_TYPE_NONE,
- CURSOR_MODIFIER_HAND,
- FALSE);
- }
- else
- {
- gdisplay_install_tool_cursor (gdisp, GIMP_BAD_CURSOR,
- MOVE,
- CURSOR_MODIFIER_NONE,
- FALSE);
- }
- }
- }
-
-
- static void
- move_tool_control (Tool *tool,
- ToolAction action,
- gpointer gdisp_ptr)
- {
- MoveTool *move;
-
- move = tool->private;
-
- switch (action)
- {
- case PAUSE:
- break;
-
- case RESUME:
- if (move->guide)
- gdisplay_draw_guide (gdisp_ptr, move->guide, TRUE);
- break;
-
- case HALT:
- break;
-
- default:
- break;
- }
- }
-
- static void
- move_create_gc (GDisplay *gdisp)
- {
- if (!move_gc)
- {
- GdkGCValues values;
-
- values.foreground.pixel = gdisplay_white_pixel (gdisp);
- values.function = GDK_INVERT;
- move_gc = gdk_gc_new_with_values (gdisp->canvas->window, &values,
- GDK_GC_FUNCTION);
- }
- }
-
- void
- move_tool_start_hguide (Tool *tool,
- GDisplay *gdisp)
- {
- MoveTool *private;
-
- selection_pause (gdisp->select);
-
- tool->gdisp_ptr = gdisp;
- tool->scroll_lock = TRUE;
-
- private = tool->private;
-
- if (private->guide && private->disp && private->disp->gimage)
- gdisplay_draw_guide (private->disp, private->guide, FALSE);
-
- private->guide = gimage_add_hguide (gdisp->gimage);
- private->disp = gdisp;
-
- tool->state = ACTIVE;
-
- undo_push_guide (gdisp->gimage, private->guide);
- }
-
- void
- move_tool_start_vguide (Tool *tool,
- GDisplay *gdisp)
- {
- MoveTool *private;
-
- selection_pause (gdisp->select);
-
- tool->gdisp_ptr = gdisp;
- tool->scroll_lock = TRUE;
-
- private = tool->private;
-
- if (private->guide && private->disp && private->disp->gimage)
- gdisplay_draw_guide (private->disp, private->guide, FALSE);
-
- private->guide = gimage_add_vguide (gdisp->gimage);
- private->disp = gdisp;
-
- tool->state = ACTIVE;
-
- undo_push_guide (gdisp->gimage, private->guide);
- }
-
- Tool *
- tools_new_move_tool (void)
- {
- Tool *tool;
- MoveTool *private;
-
- /* The tool options */
- if (! move_options)
- {
- move_options = tool_options_new (_("Move Tool"));
- tools_register (MOVE, (ToolOptions *) move_options);
- }
-
- tool = tools_new_tool (MOVE);
- private = g_new0 (MoveTool, 1);
-
- private->layer = NULL;
- private->guide = NULL;
- private->disp = NULL;
-
- tool->auto_snap_to = FALSE; /* Don't snap to guides */
-
- tool->private = (void *) private;
-
- tool->button_press_func = move_tool_button_press;
- tool->button_release_func = move_tool_button_release;
- tool->motion_func = move_tool_motion;
- tool->arrow_keys_func = edit_sel_arrow_keys_func;
- tool->cursor_update_func = move_tool_cursor_update;
- tool->control_func = move_tool_control;
-
- return tool;
- }
-
- void
- tools_free_move_tool (Tool *tool)
- {
- MoveTool *move;
-
- move = (MoveTool *) tool->private;
-
- if (tool->gdisp_ptr)
- {
- if (move->guide)
- gdisplay_draw_guide (tool->gdisp_ptr, move->guide, FALSE);
- }
-
- g_free (move);
- }
-