mirror of https://github.com/GNOME/gimp.git
338 lines
11 KiB
C
338 lines
11 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 <string.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 "core/gimpimage.h"
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#include "widgets/gimphelp-ids.h"
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#include "widgets/gimpsizebox.h"
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#include "display/gimpdisplay.h"
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#include "display/gimpdisplayshell.h"
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#include "display/gimptoolgui.h"
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#include "display/gimptooltransformgrid.h"
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#include "gimpscaletool.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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X0,
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Y0,
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X1,
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Y1
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};
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/* local function prototypes */
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static void gimp_scale_tool_dialog (GimpTransformTool *tr_tool);
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static void gimp_scale_tool_dialog_update (GimpTransformTool *tr_tool);
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static void gimp_scale_tool_prepare (GimpTransformTool *tr_tool);
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static GimpToolWidget * gimp_scale_tool_get_widget (GimpTransformTool *tr_tool);
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static void gimp_scale_tool_recalc_matrix (GimpTransformTool *tr_tool,
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GimpToolWidget *widget);
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static gchar * gimp_scale_tool_get_undo_desc (GimpTransformTool *tr_tool);
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static void gimp_scale_tool_widget_changed (GimpToolWidget *widget,
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GimpTransformTool *tr_tool);
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static void gimp_scale_tool_size_notify (GtkWidget *box,
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GParamSpec *pspec,
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GimpTransformTool *tr_tool);
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G_DEFINE_TYPE (GimpScaleTool, gimp_scale_tool, GIMP_TYPE_TRANSFORM_TOOL)
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#define parent_class gimp_scale_tool_parent_class
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void
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gimp_scale_tool_register (GimpToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (GIMP_TYPE_SCALE_TOOL,
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GIMP_TYPE_TRANSFORM_OPTIONS,
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gimp_transform_options_gui,
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GIMP_CONTEXT_PROP_MASK_BACKGROUND,
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"gimp-scale-tool",
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_("Scale"),
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_("Scale Tool: Scale the layer, selection or path"),
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N_("_Scale"), "<shift>S",
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NULL, GIMP_HELP_TOOL_SCALE,
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GIMP_ICON_TOOL_SCALE,
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data);
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}
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static void
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gimp_scale_tool_class_init (GimpScaleToolClass *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_scale_tool_dialog;
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trans_class->dialog_update = gimp_scale_tool_dialog_update;
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trans_class->prepare = gimp_scale_tool_prepare;
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trans_class->get_widget = gimp_scale_tool_get_widget;
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trans_class->recalc_matrix = gimp_scale_tool_recalc_matrix;
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trans_class->get_undo_desc = gimp_scale_tool_get_undo_desc;
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trans_class->ok_button_label = _("_Scale");
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}
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static void
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gimp_scale_tool_init (GimpScaleTool *scale_tool)
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{
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GimpTool *tool = GIMP_TOOL (scale_tool);
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GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (scale_tool);
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gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_RESIZE);
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tr_tool->progress_text = _("Scaling");
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}
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static void
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gimp_scale_tool_dialog (GimpTransformTool *tr_tool)
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{
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}
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static void
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gimp_scale_tool_dialog_update (GimpTransformTool *tr_tool)
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{
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GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
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gint width;
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gint height;
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width = ROUND (tr_tool->trans_info[X1] - tr_tool->trans_info[X0]);
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height = ROUND (tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0]);
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g_object_set (GIMP_SCALE_TOOL (tr_tool)->box,
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"width", width,
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"height", height,
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"keep-aspect", options->constrain_scale,
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NULL);
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}
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static void
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gimp_scale_tool_prepare (GimpTransformTool *tr_tool)
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{
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GimpScaleTool *scale = GIMP_SCALE_TOOL (tr_tool);
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GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
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GimpDisplay *display = GIMP_TOOL (tr_tool)->display;
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gdouble xres;
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gdouble yres;
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tr_tool->trans_info[X0] = (gdouble) tr_tool->x1;
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tr_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
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tr_tool->trans_info[X1] = (gdouble) tr_tool->x2;
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tr_tool->trans_info[Y1] = (gdouble) tr_tool->y2;
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gimp_image_get_resolution (gimp_display_get_image (display),
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&xres, &yres);
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if (scale->box)
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{
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g_signal_handlers_disconnect_by_func (scale->box,
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gimp_scale_tool_size_notify,
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tr_tool);
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gtk_widget_destroy (scale->box);
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}
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/* Need to create a new GimpSizeBox widget because the initial
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* width and height is what counts as 100%.
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*/
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scale->box =
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g_object_new (GIMP_TYPE_SIZE_BOX,
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"width", tr_tool->x2 - tr_tool->x1,
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"height", tr_tool->y2 - tr_tool->y1,
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"keep-aspect", options->constrain_scale,
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"unit", gimp_display_get_shell (display)->unit,
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"xresolution", xres,
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"yresolution", yres,
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NULL);
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gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (tr_tool->gui)),
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scale->box, FALSE, FALSE, 0);
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gtk_widget_show (scale->box);
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g_signal_connect (scale->box, "notify",
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G_CALLBACK (gimp_scale_tool_size_notify),
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tr_tool);
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}
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static GimpToolWidget *
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gimp_scale_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_transform_grid_new (shell,
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&tr_tool->transform,
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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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g_object_set (widget,
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"inside-function", GIMP_TRANSFORM_FUNCTION_SCALE,
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"outside-function", GIMP_TRANSFORM_FUNCTION_SCALE,
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"use-corner-handles", TRUE,
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"use-side-handles", TRUE,
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"use-center-handle", TRUE,
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NULL);
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g_signal_connect (widget, "changed",
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G_CALLBACK (gimp_scale_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_scale_tool_recalc_matrix (GimpTransformTool *tr_tool,
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GimpToolWidget *widget)
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{
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gimp_matrix3_identity (&tr_tool->transform);
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gimp_transform_matrix_scale (&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[X0],
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tr_tool->trans_info[Y0],
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tr_tool->trans_info[X1] - tr_tool->trans_info[X0],
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tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0]);
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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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NULL);
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}
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static gchar *
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gimp_scale_tool_get_undo_desc (GimpTransformTool *tr_tool)
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{
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gint width = ROUND (tr_tool->trans_info[X1] - tr_tool->trans_info[X0]);
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gint height = ROUND (tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0]);
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return g_strdup_printf (C_("undo-type", "Scale to %d x %d"),
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width, height);
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}
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static void
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gimp_scale_tool_widget_changed (GimpToolWidget *widget,
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GimpTransformTool *tr_tool)
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{
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GimpMatrix3 *transform;
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g_object_get (widget,
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"transform", &transform,
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NULL);
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gimp_matrix3_transform_point (transform,
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tr_tool->x1, tr_tool->y1,
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&tr_tool->trans_info[X0],
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&tr_tool->trans_info[Y0]);
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gimp_matrix3_transform_point (transform,
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tr_tool->x2, tr_tool->y2,
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&tr_tool->trans_info[X1],
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&tr_tool->trans_info[Y1]);
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g_free (transform);
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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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gimp_scale_tool_size_notify (GtkWidget *box,
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GParamSpec *pspec,
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GimpTransformTool *tr_tool)
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{
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GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
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if (! strcmp (pspec->name, "width") ||
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! strcmp (pspec->name, "height"))
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{
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gint width;
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gint height;
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gint old_width;
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gint old_height;
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g_object_get (box,
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"width", &width,
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"height", &height,
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NULL);
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old_width = ROUND (tr_tool->trans_info[X1] - tr_tool->trans_info[X0]);
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old_height = ROUND (tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0]);
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if ((width != old_width) || (height != old_height))
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{
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tr_tool->trans_info[X1] = tr_tool->trans_info[X0] + width;
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tr_tool->trans_info[Y1] = tr_tool->trans_info[Y0] + height;
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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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else if (! strcmp (pspec->name, "keep-aspect"))
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{
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gboolean constrain;
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g_object_get (box,
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"keep-aspect", &constrain,
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NULL);
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if (constrain != options->constrain_scale)
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{
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gint width;
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gint height;
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g_object_get (box,
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"width", &width,
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"height", &height,
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NULL);
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g_object_set (options,
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"constrain-scale", constrain,
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NULL);
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}
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}
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}
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