mirror of https://github.com/GNOME/gimp.git
430 lines
14 KiB
C
430 lines
14 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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* brush-editor.c
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* Copyright 1998 Jay Cox <jaycox@earthlink.net>
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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 "config.h"
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#include <string.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 "core/core-types.h"
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#include "base/temp-buf.h"
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#include "core/gimpbrushgenerated.h"
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#include "brush-editor.h"
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#include "libgimp/gimpintl.h"
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struct _BrushEditor
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{
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GtkWidget *shell;
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GtkWidget *frame;
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GtkWidget *preview;
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GtkWidget *scale_label;
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GtkWidget *options_box;
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GtkWidget *name;
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GtkAdjustment *radius_data;
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GtkAdjustment *hardness_data;
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GtkAdjustment *angle_data;
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GtkAdjustment *aspect_ratio_data;
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/* Brush preview */
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GtkWidget *brush_preview;
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GimpBrushGenerated *brush;
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gint scale;
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};
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static void brush_editor_close_callback (GtkWidget *widget,
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gpointer data);
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static void brush_editor_name_activate (GtkWidget *widget,
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BrushEditor *brush_editor);
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static gboolean brush_editor_name_focus_out (GtkWidget *widget,
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GdkEventFocus *fevent,
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BrushEditor *brush_editor);
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static void brush_editor_update_brush (GtkAdjustment *adjustment,
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BrushEditor *brush_editor);
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static void brush_editor_preview_resize (GtkWidget *widget,
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GtkAllocation *allocation,
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BrushEditor *brush_editor);
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static void brush_editor_clear_preview (BrushEditor *brush_editor);
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static void brush_editor_brush_dirty (GimpBrush *brush,
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BrushEditor *brush_editor);
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static void brush_editor_brush_name_changed (GtkWidget *widget,
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BrushEditor *brush_editor);
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/* public functions */
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BrushEditor *
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brush_editor_new (void)
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{
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BrushEditor *brush_editor;
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GtkWidget *vbox;
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GtkWidget *slider;
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GtkWidget *table;
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brush_editor = g_new0 (BrushEditor, 1);
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brush_editor->shell =
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gimp_dialog_new (_("Brush Editor"), "generated_brush_editor",
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gimp_standard_help_func,
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"dialogs/brush_editor.html",
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GTK_WIN_POS_NONE,
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FALSE, TRUE, FALSE,
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"_delete_event_", brush_editor_close_callback,
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brush_editor, NULL, NULL, TRUE, TRUE,
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NULL);
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gtk_widget_hide (GTK_WIDGET (g_list_nth_data (gtk_container_children (GTK_CONTAINER (GTK_DIALOG (brush_editor->shell)->vbox)), 0)));
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gtk_widget_hide (GTK_DIALOG (brush_editor->shell)->action_area);
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vbox = gtk_vbox_new (FALSE, 1);
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gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
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gtk_container_add (GTK_CONTAINER (GTK_DIALOG (brush_editor->shell)->vbox),
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vbox);
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/* Brush's name */
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brush_editor->name = gtk_entry_new ();
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gtk_box_pack_start (GTK_BOX (vbox), brush_editor->name, FALSE, FALSE, 0);
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gtk_widget_show (brush_editor->name);
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gtk_signal_connect (GTK_OBJECT (brush_editor->name), "activate",
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GTK_SIGNAL_FUNC (brush_editor_name_activate),
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brush_editor);
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gtk_signal_connect (GTK_OBJECT (brush_editor->name), "focus_out_event",
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GTK_SIGNAL_FUNC (brush_editor_name_focus_out),
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brush_editor);
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/* brush's preview widget w/frame */
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brush_editor->frame = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (brush_editor->frame), GTK_SHADOW_IN);
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gtk_box_pack_start (GTK_BOX (vbox), brush_editor->frame, TRUE, TRUE, 0);
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brush_editor->preview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
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gtk_preview_size (GTK_PREVIEW (brush_editor->preview), 125, 100);
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/* Enable auto-resizing of the preview but ensure a minimal size */
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gtk_widget_set_usize (brush_editor->preview, 125, 100);
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gtk_preview_set_expand (GTK_PREVIEW (brush_editor->preview), TRUE);
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gtk_signal_connect_after (GTK_OBJECT (brush_editor->frame), "size_allocate",
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GTK_SIGNAL_FUNC (brush_editor_preview_resize),
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brush_editor);
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gtk_container_add (GTK_CONTAINER (brush_editor->frame), brush_editor->preview);
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gtk_widget_show (brush_editor->preview);
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gtk_widget_show (brush_editor->frame);
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/* table for sliders/labels */
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brush_editor->scale_label = gtk_label_new ("-1:1");
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gtk_box_pack_start (GTK_BOX (vbox), brush_editor->scale_label,
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FALSE, FALSE, 0);
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gtk_widget_show (brush_editor->scale_label);
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brush_editor->scale = -1;
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/* table for sliders/labels */
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table = gtk_table_new (4, 2, FALSE);
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gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
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/* brush radius scale */
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brush_editor->radius_data =
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GTK_ADJUSTMENT (gtk_adjustment_new (10.0, 0.0, 100.0, 0.1, 1.0, 0.0));
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slider = gtk_hscale_new (brush_editor->radius_data);
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gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
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gtk_signal_connect (GTK_OBJECT (brush_editor->radius_data), "value_changed",
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GTK_SIGNAL_FUNC (brush_editor_update_brush),
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brush_editor);
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gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
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_("Radius:"), 1.0, 1.0,
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slider, 1, FALSE);
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/* brush hardness scale */
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brush_editor->hardness_data =
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GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 1.0, 0.01, 0.01, 0.0));
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slider = gtk_hscale_new (brush_editor->hardness_data);
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gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
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gtk_signal_connect (GTK_OBJECT (brush_editor->hardness_data), "value_changed",
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GTK_SIGNAL_FUNC (brush_editor_update_brush),
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brush_editor);
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gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
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_("Hardness:"), 1.0, 1.0,
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slider, 1, FALSE);
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/* brush aspect ratio scale */
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brush_editor->aspect_ratio_data =
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GTK_ADJUSTMENT (gtk_adjustment_new (1.0, 1.0, 20.0, 0.1, 1.0, 0.0));
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slider = gtk_hscale_new (brush_editor->aspect_ratio_data);
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gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
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gtk_signal_connect (GTK_OBJECT (brush_editor->aspect_ratio_data),
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"value_changed",
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GTK_SIGNAL_FUNC (brush_editor_update_brush),
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brush_editor);
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gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
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_("Aspect Ratio:"), 1.0, 1.0,
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slider, 1, FALSE);
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/* brush angle scale */
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brush_editor->angle_data =
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GTK_ADJUSTMENT (gtk_adjustment_new (00.0, 0.0, 180.0, 0.1, 1.0, 0.0));
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slider = gtk_hscale_new (brush_editor->angle_data);
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gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
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gtk_signal_connect (GTK_OBJECT (brush_editor->angle_data), "value_changed",
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GTK_SIGNAL_FUNC (brush_editor_update_brush),
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brush_editor);
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gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
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_("Angle:"), 1.0, 1.0,
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slider, 1, FALSE);
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gtk_table_set_row_spacings (GTK_TABLE (table), 3);
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gtk_table_set_col_spacing (GTK_TABLE (table), 0, 4);
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gtk_widget_show (table);
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gtk_widget_show (vbox);
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gtk_widget_show (brush_editor->shell);
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return brush_editor;
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}
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void
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brush_editor_set_brush (BrushEditor *brush_editor,
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GimpBrush *gbrush)
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{
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GimpBrushGenerated *brush = NULL;
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g_return_if_fail (brush_editor != NULL);
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if (brush_editor->brush == (GimpBrushGenerated *) gbrush)
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return;
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if (brush_editor->brush)
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{
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gtk_signal_disconnect_by_data (GTK_OBJECT (brush_editor->brush),
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brush_editor);
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gtk_object_unref (GTK_OBJECT (brush_editor->brush));
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brush_editor->brush = NULL;
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}
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if (!gbrush || !GIMP_IS_BRUSH_GENERATED (gbrush))
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{
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if (GTK_WIDGET_VISIBLE (brush_editor->shell))
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gtk_widget_hide (brush_editor->shell);
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return;
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}
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brush = GIMP_BRUSH_GENERATED (gbrush);
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gtk_signal_connect (GTK_OBJECT (brush), "invalidate_preview",
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GTK_SIGNAL_FUNC (brush_editor_brush_dirty),
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brush_editor);
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gtk_signal_connect (GTK_OBJECT (brush), "name_changed",
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GTK_SIGNAL_FUNC (brush_editor_brush_name_changed),
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brush_editor);
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gtk_adjustment_set_value (GTK_ADJUSTMENT (brush_editor->radius_data),
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gimp_brush_generated_get_radius (brush));
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gtk_adjustment_set_value (GTK_ADJUSTMENT (brush_editor->hardness_data),
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gimp_brush_generated_get_hardness (brush));
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gtk_adjustment_set_value (GTK_ADJUSTMENT (brush_editor->angle_data),
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gimp_brush_generated_get_angle (brush));
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gtk_adjustment_set_value (GTK_ADJUSTMENT (brush_editor->aspect_ratio_data),
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gimp_brush_generated_get_aspect_ratio (brush));
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gtk_entry_set_text (GTK_ENTRY (brush_editor->name),
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gimp_object_get_name (GIMP_OBJECT (gbrush)));
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brush_editor->brush = brush;
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gtk_object_ref (GTK_OBJECT (brush_editor->brush));
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brush_editor_brush_dirty (GIMP_BRUSH (brush), brush_editor);
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if (! GTK_WIDGET_VISIBLE (brush_editor->shell))
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gtk_widget_show (brush_editor->shell);
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else
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gdk_window_raise (brush_editor->shell->window);
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}
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/* private functions */
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static void
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brush_editor_close_callback (GtkWidget *widget,
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gpointer data)
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{
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BrushEditor *brush_editor = (BrushEditor *) data;
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if (GTK_WIDGET_VISIBLE (brush_editor->shell))
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gtk_widget_hide (brush_editor->shell);
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}
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static void
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brush_editor_name_activate (GtkWidget *widget,
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BrushEditor *brush_editor)
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{
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gchar *entry_text;
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entry_text = gtk_entry_get_text (GTK_ENTRY (widget));
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gimp_object_set_name (GIMP_OBJECT (brush_editor->brush), entry_text);
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}
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static gboolean
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brush_editor_name_focus_out (GtkWidget *widget,
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GdkEventFocus *fevent,
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BrushEditor *brush_editor)
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{
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brush_editor_name_activate (widget, brush_editor);
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return FALSE;
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}
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static void
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brush_editor_update_brush (GtkAdjustment *adjustment,
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BrushEditor *brush_editor)
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{
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if (brush_editor->brush &&
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((brush_editor->radius_data->value
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!= gimp_brush_generated_get_radius (brush_editor->brush))
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|| (brush_editor->hardness_data->value
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!= gimp_brush_generated_get_hardness (brush_editor->brush))
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|| (brush_editor->aspect_ratio_data->value
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!= gimp_brush_generated_get_aspect_ratio (brush_editor->brush))
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|| (brush_editor->angle_data->value
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!= gimp_brush_generated_get_angle (brush_editor->brush))))
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{
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gimp_brush_generated_freeze (brush_editor->brush);
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gimp_brush_generated_set_radius (brush_editor->brush,
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brush_editor->radius_data->value);
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gimp_brush_generated_set_hardness (brush_editor->brush,
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brush_editor->hardness_data->value);
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gimp_brush_generated_set_aspect_ratio (brush_editor->brush,
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brush_editor->aspect_ratio_data->value);
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gimp_brush_generated_set_angle (brush_editor->brush,
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brush_editor->angle_data->value);
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gimp_brush_generated_thaw (brush_editor->brush);
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}
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}
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static void
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brush_editor_preview_resize (GtkWidget *widget,
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GtkAllocation *allocation,
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BrushEditor *brush_editor)
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{
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if (brush_editor->brush)
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brush_editor_brush_dirty (GIMP_BRUSH (brush_editor->brush), brush_editor);
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}
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static void
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brush_editor_clear_preview (BrushEditor *brush_editor)
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{
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guchar *buf;
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gint i;
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buf = g_new (guchar, brush_editor->preview->allocation.width);
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/* Set the buffer to white */
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memset (buf, 255, brush_editor->preview->allocation.width);
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/* Set the image buffer to white */
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for (i = 0; i < brush_editor->preview->allocation.height; i++)
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gtk_preview_draw_row (GTK_PREVIEW (brush_editor->preview), buf, 0, i,
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brush_editor->preview->allocation.width);
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g_free (buf);
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}
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static void
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brush_editor_brush_dirty (GimpBrush *brush,
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BrushEditor *brush_editor)
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{
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gint x, y, width, yend, ystart, xo;
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gint scale;
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guchar *src, *buf;
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brush_editor_clear_preview (brush_editor);
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if (brush == NULL || brush->mask == NULL)
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return;
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scale = MAX (ceil (brush->mask->width/
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(float) brush_editor->preview->allocation.width),
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ceil (brush->mask->height/
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(float) brush_editor->preview->allocation.height));
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ystart = 0;
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xo = brush_editor->preview->allocation.width / 2 - brush->mask->width / (2 * scale);
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ystart = brush_editor->preview->allocation.height / 2 - brush->mask->height / (2 * scale);
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yend = ystart + brush->mask->height / scale;
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width = CLAMP (brush->mask->width/scale, 0, brush_editor->preview->allocation.width);
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buf = g_new (guchar, width);
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src = (guchar *) temp_buf_data (brush->mask);
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for (y = ystart; y < yend; y++)
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{
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/* Invert the mask for display.
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*/
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for (x = 0; x < width; x++)
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buf[x] = 255 - src[x * scale];
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gtk_preview_draw_row (GTK_PREVIEW (brush_editor->preview), buf,
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xo, y, width);
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src += brush->mask->width * scale;
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}
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g_free (buf);
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if (brush_editor->scale != scale)
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{
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gchar str[255];
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brush_editor->scale = scale;
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g_snprintf (str, sizeof (str), "%d:1", scale);
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gtk_label_set_text (GTK_LABEL (brush_editor->scale_label), str);
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}
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gtk_widget_queue_draw (brush_editor->preview);
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}
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static void
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brush_editor_brush_name_changed (GtkWidget *widget,
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BrushEditor *brush_editor)
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{
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gtk_entry_set_text (GTK_ENTRY (brush_editor->name),
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gimp_object_get_name (GIMP_OBJECT (brush_editor->brush)));
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}
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