/* 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 #include "libgimpmath/gimpmath.h" #include "libgimpwidgets/gimpwidgets.h" #include "tools-types.h" #include "core/gimp-transform-utils.h" #include "core/gimpimage.h" #include "core/gimpdrawable-transform.h" #include "core/gimptoolinfo.h" #include "widgets/gimphelp-ids.h" #include "display/gimpdisplay.h" #ifdef __GNUC__ #warning FIXME #include "gui/gui-types.h" #endif #include "gui/gui-types.h" #include "gui/info-dialog.h" #include "gimpperspectivetool.h" #include "gimptoolcontrol.h" #include "gimptransformoptions.h" #include "gimp-intl.h" /* local function prototypes */ static void gimp_perspective_tool_class_init (GimpPerspectiveToolClass *klass); static void gimp_perspective_tool_init (GimpPerspectiveTool *tool); static void gimp_perspective_tool_dialog (GimpTransformTool *tr_tool); static void gimp_perspective_tool_prepare (GimpTransformTool *tr_tool, GimpDisplay *gdisp); static void gimp_perspective_tool_motion (GimpTransformTool *tr_tool, GimpDisplay *gdisp); static void gimp_perspective_tool_recalc (GimpTransformTool *tr_tool, GimpDisplay *gdisp); static void perspective_info_update (GimpTransformTool *tr_tool); /* storage for information dialog fields */ static gchar matrix_row_buf [3][MAX_INFO_BUF]; static GimpTransformToolClass *parent_class = NULL; /* public functions */ void gimp_perspective_tool_register (GimpToolRegisterCallback callback, gpointer data) { (* callback) (GIMP_TYPE_PERSPECTIVE_TOOL, GIMP_TYPE_TRANSFORM_OPTIONS, gimp_transform_options_gui, 0, "gimp-perspective-tool", _("Perspective"), _("Change perspective of the layer or selection"), N_("_Perspective"), "P", NULL, GIMP_HELP_TOOL_PERSPECTIVE, GIMP_STOCK_TOOL_PERSPECTIVE, data); } GType gimp_perspective_tool_get_type (void) { static GType tool_type = 0; if (! tool_type) { static const GTypeInfo tool_info = { sizeof (GimpPerspectiveToolClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gimp_perspective_tool_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GimpPerspectiveTool), 0, /* n_preallocs */ (GInstanceInitFunc) gimp_perspective_tool_init, }; tool_type = g_type_register_static (GIMP_TYPE_TRANSFORM_TOOL, "GimpPerspectiveTool", &tool_info, 0); } return tool_type; } static void gimp_perspective_tool_class_init (GimpPerspectiveToolClass *klass) { GimpTransformToolClass *trans_class; trans_class = GIMP_TRANSFORM_TOOL_CLASS (klass); parent_class = g_type_class_peek_parent (klass); trans_class->dialog = gimp_perspective_tool_dialog; trans_class->prepare = gimp_perspective_tool_prepare; trans_class->motion = gimp_perspective_tool_motion; trans_class->recalc = gimp_perspective_tool_recalc; } static void gimp_perspective_tool_init (GimpPerspectiveTool *perspective_tool) { GimpTool *tool = GIMP_TOOL (perspective_tool); GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (perspective_tool); gimp_tool_control_set_tool_cursor (tool->control, GIMP_PERSPECTIVE_TOOL_CURSOR); tr_tool->shell_desc = _("Perspective Transform Information"); tr_tool->progress_text = _("Perspective..."); } static void gimp_perspective_tool_dialog (GimpTransformTool *tr_tool) { info_dialog_add_label (tr_tool->info_dialog, _("Matrix:"), matrix_row_buf[0]); info_dialog_add_label (tr_tool->info_dialog, "", matrix_row_buf[1]); info_dialog_add_label (tr_tool->info_dialog, "", matrix_row_buf[2]); } static void gimp_perspective_tool_prepare (GimpTransformTool *tr_tool, GimpDisplay *gdisp) { tr_tool->trans_info[X0] = (gdouble) tr_tool->x1; tr_tool->trans_info[Y0] = (gdouble) tr_tool->y1; tr_tool->trans_info[X1] = (gdouble) tr_tool->x2; tr_tool->trans_info[Y1] = (gdouble) tr_tool->y1; tr_tool->trans_info[X2] = (gdouble) tr_tool->x1; tr_tool->trans_info[Y2] = (gdouble) tr_tool->y2; tr_tool->trans_info[X3] = (gdouble) tr_tool->x2; tr_tool->trans_info[Y3] = (gdouble) tr_tool->y2; } static void gimp_perspective_tool_motion (GimpTransformTool *transform_tool, GimpDisplay *gdisp) { gdouble diff_x, diff_y; diff_x = transform_tool->curx - transform_tool->lastx; diff_y = transform_tool->cury - transform_tool->lasty; switch (transform_tool->function) { case TRANSFORM_HANDLE_1: transform_tool->trans_info[X0] += diff_x; transform_tool->trans_info[Y0] += diff_y; break; case TRANSFORM_HANDLE_2: transform_tool->trans_info[X1] += diff_x; transform_tool->trans_info[Y1] += diff_y; break; case TRANSFORM_HANDLE_3: transform_tool->trans_info[X2] += diff_x; transform_tool->trans_info[Y2] += diff_y; break; case TRANSFORM_HANDLE_4: transform_tool->trans_info[X3] += diff_x; transform_tool->trans_info[Y3] += diff_y; break; case TRANSFORM_HANDLE_CENTER: transform_tool->trans_info[X0] += diff_x; transform_tool->trans_info[Y0] += diff_y; transform_tool->trans_info[X1] += diff_x; transform_tool->trans_info[Y1] += diff_y; transform_tool->trans_info[X2] += diff_x; transform_tool->trans_info[Y2] += diff_y; transform_tool->trans_info[X3] += diff_x; transform_tool->trans_info[Y3] += diff_y; break; default: break; } } static void gimp_perspective_tool_recalc (GimpTransformTool *tr_tool, GimpDisplay *gdisp) { gimp_transform_matrix_perspective (tr_tool->x1, tr_tool->y1, tr_tool->x2, tr_tool->y2, tr_tool->trans_info[X0], tr_tool->trans_info[Y0], tr_tool->trans_info[X1], tr_tool->trans_info[Y1], tr_tool->trans_info[X2], tr_tool->trans_info[Y2], tr_tool->trans_info[X3], tr_tool->trans_info[Y3], &tr_tool->transform); /* transform the bounding box */ gimp_transform_tool_transform_bounding_box (tr_tool); /* update the information dialog */ perspective_info_update (tr_tool); } static void perspective_info_update (GimpTransformTool *tr_tool) { gint i; for (i = 0; i < 3; i++) { gchar *p = matrix_row_buf[i]; gint j; for (j = 0; j < 3; j++) { p += g_snprintf (p, MAX_INFO_BUF - (p - matrix_row_buf[i]), "%10.3g", tr_tool->transform.coeff[i][j]); } } info_dialog_update (tr_tool->info_dialog); info_dialog_show (tr_tool->info_dialog); }