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002aa905db
1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
320 lines
8.5 KiB
C
320 lines
8.5 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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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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#include "appenv.h"
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#include "drawable.h"
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#include "gdisplay.h"
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#include "gimage_mask.h"
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#include "info_dialog.h"
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#include "perspective_tool.h"
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#include "selection.h"
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#include "tools.h"
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#include "transform_core.h"
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#include "transform_tool.h"
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#include "undo.h"
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#include "libgimp/gimpintl.h"
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#include "tile_manager_pvt.h"
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/* storage for information dialog fields */
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static char matrix_row_buf [3][MAX_INFO_BUF];
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/* forward function declarations */
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static void * perspective_tool_recalc (Tool *, void *);
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static void perspective_tool_motion (Tool *, void *);
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static void perspective_info_update (Tool *);
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void *
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perspective_tool_transform (Tool *tool,
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gpointer gdisp_ptr,
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int state)
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{
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GDisplay * gdisp;
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TransformCore * transform_core;
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gdisp = (GDisplay *) gdisp_ptr;
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transform_core = (TransformCore *) tool->private;
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switch (state)
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{
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case INIT :
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if (!transform_info)
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{
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transform_info =
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info_dialog_new (_("Perspective Transform Information"),
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tools_help_func, NULL);
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info_dialog_add_label (transform_info, "Matrix:",
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matrix_row_buf[0]);
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info_dialog_add_label (transform_info, "", matrix_row_buf[1]);
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info_dialog_add_label (transform_info, "", matrix_row_buf[2]);
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}
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gtk_widget_set_sensitive (GTK_WIDGET (transform_info->shell), TRUE);
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transform_core->trans_info [X0] = (double) transform_core->x1;
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transform_core->trans_info [Y0] = (double) transform_core->y1;
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transform_core->trans_info [X1] = (double) transform_core->x2;
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transform_core->trans_info [Y1] = (double) transform_core->y1;
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transform_core->trans_info [X2] = (double) transform_core->x1;
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transform_core->trans_info [Y2] = (double) transform_core->y2;
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transform_core->trans_info [X3] = (double) transform_core->x2;
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transform_core->trans_info [Y3] = (double) transform_core->y2;
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return NULL;
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break;
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case MOTION :
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perspective_tool_motion (tool, gdisp_ptr);
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return (perspective_tool_recalc (tool, gdisp_ptr));
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break;
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case RECALC :
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return (perspective_tool_recalc (tool, gdisp_ptr));
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break;
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case FINISH :
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/* Let the transform core handle the inverse mapping */
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gtk_widget_set_sensitive (GTK_WIDGET (transform_info->shell), FALSE);
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return
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perspective_tool_perspective (gdisp->gimage,
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gimage_active_drawable (gdisp->gimage),
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gdisp,
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transform_core->original,
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transform_tool_smoothing (),
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transform_core->transform);
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break;
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}
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return NULL;
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}
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Tool *
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tools_new_perspective_tool ()
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{
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Tool * tool;
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TransformCore * private;
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tool = transform_core_new (PERSPECTIVE, INTERACTIVE);
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private = tool->private;
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/* set the rotation specific transformation attributes */
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private->trans_func = perspective_tool_transform;
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private->trans_info[X0] = 0;
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private->trans_info[Y0] = 0;
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private->trans_info[X1] = 0;
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private->trans_info[Y1] = 0;
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private->trans_info[X2] = 0;
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private->trans_info[Y2] = 0;
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private->trans_info[X3] = 0;
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private->trans_info[Y3] = 0;
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/* assemble the transformation matrix */
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gimp_matrix_identity (private->transform);
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return tool;
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}
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void
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tools_free_perspective_tool (Tool *tool)
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{
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transform_core_free (tool);
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}
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static void
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perspective_info_update (Tool *tool)
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{
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TransformCore * transform_core;
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int i;
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transform_core = (TransformCore *) tool->private;
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for (i = 0; i < 3; i++)
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{
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char *p = matrix_row_buf[i];
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int j;
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for (j = 0; j < 3; j++)
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{
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p += g_snprintf (p, MAX_INFO_BUF - (p - matrix_row_buf[i]),
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"%10.3g", transform_core->transform[i][j]);
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}
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}
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info_dialog_update (transform_info);
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info_dialog_popup (transform_info);
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return;
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}
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static void
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perspective_tool_motion (Tool *tool,
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void *gdisp_ptr)
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{
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GDisplay * gdisp;
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TransformCore * transform_core;
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int diff_x, diff_y;
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gdisp = (GDisplay *) gdisp_ptr;
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transform_core = (TransformCore *) tool->private;
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diff_x = transform_core->curx - transform_core->lastx;
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diff_y = transform_core->cury - transform_core->lasty;
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switch (transform_core->function)
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{
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case HANDLE_1 :
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transform_core->trans_info [X0] += diff_x;
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transform_core->trans_info [Y0] += diff_y;
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break;
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case HANDLE_2 :
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transform_core->trans_info [X1] += diff_x;
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transform_core->trans_info [Y1] += diff_y;
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break;
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case HANDLE_3 :
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transform_core->trans_info [X2] += diff_x;
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transform_core->trans_info [Y2] += diff_y;
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break;
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case HANDLE_4 :
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transform_core->trans_info [X3] += diff_x;
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transform_core->trans_info [Y3] += diff_y;
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break;
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default :
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return;
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}
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}
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static void *
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perspective_tool_recalc (Tool *tool,
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void *gdisp_ptr)
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{
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TransformCore * transform_core;
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GDisplay * gdisp;
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GimpMatrix m;
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double cx, cy;
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double scalex, scaley;
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gdisp = (GDisplay *) tool->gdisp_ptr;
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transform_core = (TransformCore *) tool->private;
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/* determine the perspective transform that maps from
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* the unit cube to the trans_info coordinates
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*/
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perspective_find_transform (transform_core->trans_info, m);
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cx = transform_core->x1;
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cy = transform_core->y1;
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scalex = 1.0;
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scaley = 1.0;
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if (transform_core->x2 - transform_core->x1)
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scalex = 1.0 / (transform_core->x2 - transform_core->x1);
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if (transform_core->y2 - transform_core->y1)
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scaley = 1.0 / (transform_core->y2 - transform_core->y1);
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/* assemble the transformation matrix */
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gimp_matrix_identity (transform_core->transform);
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gimp_matrix_translate (transform_core->transform, -cx, -cy);
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gimp_matrix_scale (transform_core->transform, scalex, scaley);
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gimp_matrix_mult (m, transform_core->transform);
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/* transform the bounding box */
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transform_bounding_box (tool);
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/* update the information dialog */
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perspective_info_update (tool);
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return (void *) 1;
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}
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void
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perspective_find_transform (double *coords,
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GimpMatrix m)
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{
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double dx1, dx2, dx3, dy1, dy2, dy3;
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double det1, det2;
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dx1 = coords[X1] - coords[X3];
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dx2 = coords[X2] - coords[X3];
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dx3 = coords[X0] - coords[X1] + coords[X3] - coords[X2];
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dy1 = coords[Y1] - coords[Y3];
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dy2 = coords[Y2] - coords[Y3];
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dy3 = coords[Y0] - coords[Y1] + coords[Y3] - coords[Y2];
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/* Is the mapping affine? */
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if ((dx3 == 0.0) && (dy3 == 0.0))
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{
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m[0][0] = coords[X1] - coords[X0];
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m[0][1] = coords[X3] - coords[X1];
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m[0][2] = coords[X0];
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m[1][0] = coords[Y1] - coords[Y0];
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m[1][1] = coords[Y3] - coords[Y1];
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m[1][2] = coords[Y0];
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m[2][0] = 0.0;
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m[2][1] = 0.0;
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}
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else
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{
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det1 = dx3 * dy2 - dy3 * dx2;
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det2 = dx1 * dy2 - dy1 * dx2;
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m[2][0] = det1 / det2;
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det1 = dx1 * dy3 - dy1 * dx3;
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det2 = dx1 * dy2 - dy1 * dx2;
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m[2][1] = det1 / det2;
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m[0][0] = coords[X1] - coords[X0] + m[2][0] * coords[X1];
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m[0][1] = coords[X2] - coords[X0] + m[2][1] * coords[X2];
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m[0][2] = coords[X0];
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m[1][0] = coords[Y1] - coords[Y0] + m[2][0] * coords[Y1];
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m[1][1] = coords[Y2] - coords[Y0] + m[2][1] * coords[Y2];
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m[1][2] = coords[Y0];
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}
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m[2][2] = 1.0;
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}
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void *
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perspective_tool_perspective (GImage *gimage,
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GimpDrawable *drawable,
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GDisplay *gdisp,
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TileManager *float_tiles,
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int interpolation,
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GimpMatrix matrix)
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{
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void *ret;
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gimp_progress *progress;
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progress = progress_start (gdisp, _("Perspective..."), FALSE, NULL, NULL);
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ret = transform_core_do (gimage, drawable, float_tiles,
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interpolation, matrix,
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progress? progress_update_and_flush:NULL, progress);
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if (progress)
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progress_end (progress);
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return ret;
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}
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