mirror of https://github.com/GNOME/gimp.git
319 lines
10 KiB
C
319 lines
10 KiB
C
/* GIMP - The GNU 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 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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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpmath/gimpmath.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "tools-types.h"
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#include "core/gimp-transform-utils.h"
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#include "widgets/gimphelp-ids.h"
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#include "widgets/gimpspinscale.h"
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#include "display/gimpdisplay.h"
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#include "display/gimptoolgui.h"
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#include "display/gimptoolsheargrid.h"
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#include "gimpsheartool.h"
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#include "gimptoolcontrol.h"
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#include "gimptransformoptions.h"
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#include "gimp-intl.h"
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/* index into trans_info array */
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enum
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{
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ORIENTATION,
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SHEAR_X,
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SHEAR_Y
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};
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#define SB_WIDTH 10
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/* local function prototypes */
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static void gimp_shear_tool_dialog (GimpTransformTool *tr_tool);
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static void gimp_shear_tool_dialog_update (GimpTransformTool *tr_tool);
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static void gimp_shear_tool_prepare (GimpTransformTool *tr_tool);
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static GimpToolWidget * gimp_shear_tool_get_widget (GimpTransformTool *tr_tool);
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static void gimp_shear_tool_recalc_matrix (GimpTransformTool *tr_tool,
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GimpToolWidget *widget);
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static gchar * gimp_shear_tool_get_undo_desc (GimpTransformTool *tr_tool);
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static void gimp_shear_tool_widget_changed (GimpToolWidget *widget,
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GimpTransformTool *tr_tool);
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static void shear_x_mag_changed (GtkAdjustment *adj,
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GimpTransformTool *tr_tool);
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static void shear_y_mag_changed (GtkAdjustment *adj,
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GimpTransformTool *tr_tool);
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G_DEFINE_TYPE (GimpShearTool, gimp_shear_tool, GIMP_TYPE_TRANSFORM_TOOL)
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void
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gimp_shear_tool_register (GimpToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (GIMP_TYPE_SHEAR_TOOL,
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GIMP_TYPE_TRANSFORM_OPTIONS,
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gimp_transform_options_gui,
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0,
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"gimp-shear-tool",
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_("Shear"),
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_("Shear Tool: Shear the layer, selection or path"),
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N_("S_hear"), "<shift>H",
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NULL, GIMP_HELP_TOOL_SHEAR,
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GIMP_ICON_TOOL_SHEAR,
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data);
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}
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static void
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gimp_shear_tool_class_init (GimpShearToolClass *klass)
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{
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GimpTransformToolClass *trans_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
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trans_class->dialog = gimp_shear_tool_dialog;
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trans_class->dialog_update = gimp_shear_tool_dialog_update;
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trans_class->prepare = gimp_shear_tool_prepare;
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trans_class->get_widget = gimp_shear_tool_get_widget;
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trans_class->recalc_matrix = gimp_shear_tool_recalc_matrix;
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trans_class->get_undo_desc = gimp_shear_tool_get_undo_desc;
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trans_class->ok_button_label = _("_Shear");
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}
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static void
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gimp_shear_tool_init (GimpShearTool *shear_tool)
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{
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GimpTool *tool = GIMP_TOOL (shear_tool);
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GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (shear_tool);
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gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_SHEAR);
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tr_tool->progress_text = _("Shearing");
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}
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static void
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gimp_shear_tool_dialog (GimpTransformTool *tr_tool)
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{
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GimpShearTool *shear = GIMP_SHEAR_TOOL (tr_tool);
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GtkWidget *vbox;
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GtkWidget *scale;
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
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gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (tr_tool->gui)), vbox,
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FALSE, FALSE, 0);
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gtk_widget_show (vbox);
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shear->x_adj = (GtkAdjustment *)
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gtk_adjustment_new (0, -65536, 65536, 1, 10, 0);
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scale = gimp_spin_scale_new (shear->x_adj, _("Shear magnitude _X"), 0);
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gimp_spin_scale_set_scale_limits (GIMP_SPIN_SCALE (scale), -1000, 1000);
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gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
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gtk_widget_show (scale);
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g_signal_connect (shear->x_adj, "value-changed",
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G_CALLBACK (shear_x_mag_changed),
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tr_tool);
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shear->y_adj = (GtkAdjustment *)
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gtk_adjustment_new (0, -65536, 65536, 1, 10, 0);
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scale = gimp_spin_scale_new (shear->y_adj, _("Shear magnitude _Y"), 0);
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gimp_spin_scale_set_scale_limits (GIMP_SPIN_SCALE (scale), -1000, 1000);
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gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
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gtk_widget_show (scale);
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g_signal_connect (shear->y_adj, "value-changed",
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G_CALLBACK (shear_y_mag_changed),
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tr_tool);
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}
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static void
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gimp_shear_tool_dialog_update (GimpTransformTool *tr_tool)
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{
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GimpShearTool *shear = GIMP_SHEAR_TOOL (tr_tool);
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gtk_adjustment_set_value (shear->x_adj, tr_tool->trans_info[SHEAR_X]);
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gtk_adjustment_set_value (shear->y_adj, tr_tool->trans_info[SHEAR_Y]);
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}
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static void
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gimp_shear_tool_prepare (GimpTransformTool *tr_tool)
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{
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tr_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_UNKNOWN;
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tr_tool->trans_info[SHEAR_X] = 0.0;
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tr_tool->trans_info[SHEAR_Y] = 0.0;
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}
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static GimpToolWidget *
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gimp_shear_tool_get_widget (GimpTransformTool *tr_tool)
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{
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GimpTool *tool = GIMP_TOOL (tr_tool);
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GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
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GimpToolWidget *widget;
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widget = gimp_tool_shear_grid_new (shell,
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tr_tool->x1,
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tr_tool->y1,
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tr_tool->x2,
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tr_tool->y2,
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tr_tool->trans_info[ORIENTATION],
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tr_tool->trans_info[SHEAR_X],
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tr_tool->trans_info[SHEAR_Y]);
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g_object_set (widget,
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"inside-function", GIMP_TRANSFORM_FUNCTION_SHEAR,
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"outside-function", GIMP_TRANSFORM_FUNCTION_SHEAR,
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"frompivot-shear", TRUE,
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NULL);
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g_signal_connect (widget, "changed",
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G_CALLBACK (gimp_shear_tool_widget_changed),
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tr_tool);
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return widget;
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}
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static void
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gimp_shear_tool_recalc_matrix (GimpTransformTool *tr_tool,
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GimpToolWidget *widget)
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{
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gdouble amount;
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if (tr_tool->trans_info[SHEAR_X] == 0.0 &&
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tr_tool->trans_info[SHEAR_Y] == 0.0)
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{
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tr_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_UNKNOWN;
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}
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if (tr_tool->trans_info[ORIENTATION] == GIMP_ORIENTATION_HORIZONTAL)
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amount = tr_tool->trans_info[SHEAR_X];
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else
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amount = tr_tool->trans_info[SHEAR_Y];
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gimp_matrix3_identity (&tr_tool->transform);
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gimp_transform_matrix_shear (&tr_tool->transform,
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tr_tool->x1,
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tr_tool->y1,
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tr_tool->x2 - tr_tool->x1,
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tr_tool->y2 - tr_tool->y1,
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tr_tool->trans_info[ORIENTATION],
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amount);
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if (widget)
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g_object_set (widget,
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"transform", &tr_tool->transform,
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"x1", (gdouble) tr_tool->x1,
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"y1", (gdouble) tr_tool->y1,
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"x2", (gdouble) tr_tool->x2,
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"y2", (gdouble) tr_tool->y2,
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"orientation", (gint) tr_tool->trans_info[ORIENTATION],
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"shear-x", tr_tool->trans_info[SHEAR_X],
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"shear-y", tr_tool->trans_info[SHEAR_Y],
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NULL);
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}
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static gchar *
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gimp_shear_tool_get_undo_desc (GimpTransformTool *tr_tool)
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{
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gdouble x = tr_tool->trans_info[SHEAR_X];
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gdouble y = tr_tool->trans_info[SHEAR_Y];
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switch ((gint) tr_tool->trans_info[ORIENTATION])
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{
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case GIMP_ORIENTATION_HORIZONTAL:
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return g_strdup_printf (C_("undo-type", "Shear horizontally by %-3.3g"),
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x);
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case GIMP_ORIENTATION_VERTICAL:
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return g_strdup_printf (C_("undo-type", "Shear vertically by %-3.3g"),
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y);
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default:
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/* e.g. user entered numbers but no notification callback */
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return g_strdup_printf (C_("undo-type", "Shear horizontally by %-3.3g, vertically by %-3.3g"),
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x, y);
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}
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}
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static void
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gimp_shear_tool_widget_changed (GimpToolWidget *widget,
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GimpTransformTool *tr_tool)
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{
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GimpOrientationType orientation;
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g_object_get (widget,
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"orientation", &orientation,
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"shear-x", &tr_tool->trans_info[SHEAR_X],
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"shear-y", &tr_tool->trans_info[SHEAR_Y],
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NULL);
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tr_tool->trans_info[ORIENTATION] = orientation;
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gimp_transform_tool_recalc_matrix (tr_tool, NULL);
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}
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static void
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shear_x_mag_changed (GtkAdjustment *adj,
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GimpTransformTool *tr_tool)
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{
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gdouble value = gtk_adjustment_get_value (adj);
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if (value != tr_tool->trans_info[SHEAR_X])
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{
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tr_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_HORIZONTAL;
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tr_tool->trans_info[SHEAR_X] = value;
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tr_tool->trans_info[SHEAR_Y] = 0.0; /* can only shear in one axis */
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gimp_transform_tool_push_internal_undo (tr_tool);
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gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
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}
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}
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static void
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shear_y_mag_changed (GtkAdjustment *adj,
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GimpTransformTool *tr_tool)
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{
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gdouble value = gtk_adjustment_get_value (adj);
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if (value != tr_tool->trans_info[SHEAR_Y])
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{
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tr_tool->trans_info[ORIENTATION] = GIMP_ORIENTATION_VERTICAL;
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tr_tool->trans_info[SHEAR_Y] = value;
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tr_tool->trans_info[SHEAR_X] = 0.0; /* can only shear in one axis */
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gimp_transform_tool_push_internal_undo (tr_tool);
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gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
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}
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}
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