PIKApp/app/widgets/pikabrusheditor.c

462 lines
16 KiB
C

/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* pikabrusheditor.c
* Copyright 1998 Jay Cox <jaycox@earthlink.net>
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libpikamath/pikamath.h"
#include "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pika.h"
#include "core/pikabrushgenerated.h"
#include "core/pikacontext.h"
#include "pikabrusheditor.h"
#include "pikadocked.h"
#include "pikaview.h"
#include "pikaviewrenderer.h"
#include "pika-intl.h"
#define BRUSH_VIEW_SIZE 96
/* local function prototypes */
static void pika_brush_editor_docked_iface_init (PikaDockedInterface *face);
static void pika_brush_editor_constructed (GObject *object);
static void pika_brush_editor_set_data (PikaDataEditor *editor,
PikaData *data);
static void pika_brush_editor_set_context (PikaDocked *docked,
PikaContext *context);
static void pika_brush_editor_update_brush (GtkAdjustment *adjustment,
PikaBrushEditor *editor);
static void pika_brush_editor_update_shape (GtkWidget *widget,
PikaBrushEditor *editor);
static void pika_brush_editor_notify_brush (PikaBrushGenerated *brush,
GParamSpec *pspec,
PikaBrushEditor *editor);
G_DEFINE_TYPE_WITH_CODE (PikaBrushEditor, pika_brush_editor,
PIKA_TYPE_DATA_EDITOR,
G_IMPLEMENT_INTERFACE (PIKA_TYPE_DOCKED,
pika_brush_editor_docked_iface_init))
#define parent_class pika_brush_editor_parent_class
static PikaDockedInterface *parent_docked_iface = NULL;
static void
pika_brush_editor_class_init (PikaBrushEditorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaDataEditorClass *editor_class = PIKA_DATA_EDITOR_CLASS (klass);
object_class->constructed = pika_brush_editor_constructed;
editor_class->set_data = pika_brush_editor_set_data;
editor_class->title = _("Brush Editor");
}
static void
pika_brush_editor_docked_iface_init (PikaDockedInterface *iface)
{
parent_docked_iface = g_type_interface_peek_parent (iface);
if (! parent_docked_iface)
parent_docked_iface = g_type_default_interface_peek (PIKA_TYPE_DOCKED);
iface->set_context = pika_brush_editor_set_context;
}
static void
pika_brush_editor_init (PikaBrushEditor *editor)
{
PikaDataEditor *data_editor = PIKA_DATA_EDITOR (editor);
GtkWidget *frame;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *box;
GtkWidget *scale;
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (editor), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
data_editor->view = pika_view_new_full_by_types (NULL,
PIKA_TYPE_VIEW,
PIKA_TYPE_BRUSH,
BRUSH_VIEW_SIZE,
BRUSH_VIEW_SIZE, 0,
FALSE, FALSE, TRUE);
gtk_widget_set_size_request (data_editor->view, -1, BRUSH_VIEW_SIZE);
pika_view_set_expand (PIKA_VIEW (data_editor->view), TRUE);
gtk_container_add (GTK_CONTAINER (frame), data_editor->view);
gtk_widget_show (data_editor->view);
editor->shape_group = NULL;
editor->options_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_box_pack_start (GTK_BOX (editor), editor->options_box, FALSE, FALSE, 0);
gtk_widget_show (editor->options_box);
/* Stock Box for the brush shape */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
gtk_box_pack_start (GTK_BOX (editor->options_box), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
label = gtk_label_new (_("Shape:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
box = pika_enum_icon_box_new (PIKA_TYPE_BRUSH_GENERATED_SHAPE,
"pika-shape",
GTK_ICON_SIZE_MENU,
G_CALLBACK (pika_brush_editor_update_shape),
editor, NULL,
&editor->shape_group);
gtk_box_pack_start (GTK_BOX (hbox), box, FALSE, FALSE, 0);
gtk_widget_show (box);
/* brush radius scale */
editor->radius_data = gtk_adjustment_new (0.0, 0.1, 1000.0, 1.0, 10.0, 0.0);
scale = pika_spin_scale_new (editor->radius_data, _("Radius"), 1);
gtk_box_pack_start (GTK_BOX (editor->options_box), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
g_signal_connect (editor->radius_data, "value-changed",
G_CALLBACK (pika_brush_editor_update_brush),
editor);
/* number of spikes */
editor->spikes_data = gtk_adjustment_new (2.0, 2.0, 20.0, 1.0, 1.0, 0.0);
scale = pika_spin_scale_new (editor->spikes_data, _("Spikes"), 0);
gtk_box_pack_start (GTK_BOX (editor->options_box), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
g_signal_connect (editor->spikes_data, "value-changed",
G_CALLBACK (pika_brush_editor_update_brush),
editor);
/* brush hardness scale */
editor->hardness_data = gtk_adjustment_new (0.0, 0.0, 1.0, 0.01, 0.1, 0.0);
scale = pika_spin_scale_new (editor->hardness_data, _("Hardness"), 2);
gtk_box_pack_start (GTK_BOX (editor->options_box), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
g_signal_connect (editor->hardness_data, "value-changed",
G_CALLBACK (pika_brush_editor_update_brush),
editor);
/* brush aspect ratio scale */
editor->aspect_ratio_data = gtk_adjustment_new (0.0, 1.0, 20.0, 0.1, 1.0, 0.0);
scale = pika_spin_scale_new (editor->aspect_ratio_data, _("Aspect ratio"), 1);
gtk_box_pack_start (GTK_BOX (editor->options_box), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
g_signal_connect (editor->aspect_ratio_data,"value-changed",
G_CALLBACK (pika_brush_editor_update_brush),
editor);
/* brush angle scale */
editor->angle_data = gtk_adjustment_new (0.0, 0.0, 180.0, 0.1, 1.0, 0.0);
scale = pika_spin_scale_new (editor->angle_data, _("Angle"), 1);
gtk_box_pack_start (GTK_BOX (editor->options_box), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
g_signal_connect (editor->angle_data, "value-changed",
G_CALLBACK (pika_brush_editor_update_brush),
editor);
/* brush spacing */
editor->spacing_data = gtk_adjustment_new (0.0, 1.0, 5000.0, 1.0, 10.0, 0.0);
scale = pika_spin_scale_new (editor->spacing_data, _("Spacing"), 1);
pika_spin_scale_set_scale_limits (PIKA_SPIN_SCALE (scale), 1.0, 200.0);
gtk_box_pack_start (GTK_BOX (editor->options_box), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
pika_help_set_help_data (scale, _("Percentage of width of brush"), NULL);
g_signal_connect (editor->spacing_data, "value-changed",
G_CALLBACK (pika_brush_editor_update_brush),
editor);
}
static void
pika_brush_editor_constructed (GObject *object)
{
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_docked_set_show_button_bar (PIKA_DOCKED (object), FALSE);
}
static void
pika_brush_editor_set_data (PikaDataEditor *editor,
PikaData *data)
{
PikaBrushEditor *brush_editor = PIKA_BRUSH_EDITOR (editor);
PikaBrushGeneratedShape shape = PIKA_BRUSH_GENERATED_CIRCLE;
gdouble radius = 0.0;
gint spikes = 2;
gdouble hardness = 0.0;
gdouble ratio = 0.0;
gdouble angle = 0.0;
gdouble spacing = 0.0;
if (editor->data)
g_signal_handlers_disconnect_by_func (editor->data,
pika_brush_editor_notify_brush,
editor);
PIKA_DATA_EDITOR_CLASS (parent_class)->set_data (editor, data);
if (editor->data)
g_signal_connect (editor->data, "notify",
G_CALLBACK (pika_brush_editor_notify_brush),
editor);
pika_view_set_viewable (PIKA_VIEW (editor->view), PIKA_VIEWABLE (data));
if (editor->data)
{
spacing = pika_brush_get_spacing (PIKA_BRUSH (editor->data));
if (PIKA_IS_BRUSH_GENERATED (editor->data))
{
PikaBrushGenerated *brush = PIKA_BRUSH_GENERATED (editor->data);
shape = pika_brush_generated_get_shape (brush);
radius = pika_brush_generated_get_radius (brush);
spikes = pika_brush_generated_get_spikes (brush);
hardness = pika_brush_generated_get_hardness (brush);
ratio = pika_brush_generated_get_aspect_ratio (brush);
angle = pika_brush_generated_get_angle (brush);
}
}
gtk_widget_set_sensitive (brush_editor->options_box,
editor->data_editable);
pika_int_radio_group_set_active (GTK_RADIO_BUTTON (brush_editor->shape_group),
shape);
gtk_adjustment_set_value (brush_editor->radius_data, radius);
gtk_adjustment_set_value (brush_editor->spikes_data, spikes);
gtk_adjustment_set_value (brush_editor->hardness_data, hardness);
gtk_adjustment_set_value (brush_editor->aspect_ratio_data, ratio);
gtk_adjustment_set_value (brush_editor->angle_data, angle);
gtk_adjustment_set_value (brush_editor->spacing_data, spacing);
}
static void
pika_brush_editor_set_context (PikaDocked *docked,
PikaContext *context)
{
PikaDataEditor *data_editor = PIKA_DATA_EDITOR (docked);
parent_docked_iface->set_context (docked, context);
pika_view_renderer_set_context (PIKA_VIEW (data_editor->view)->renderer,
context);
}
/* public functions */
GtkWidget *
pika_brush_editor_new (PikaContext *context,
PikaMenuFactory *menu_factory)
{
g_return_val_if_fail (PIKA_IS_CONTEXT (context), NULL);
return g_object_new (PIKA_TYPE_BRUSH_EDITOR,
"menu-factory", menu_factory,
"menu-identifier", "<BrushEditor>",
"ui-path", "/brush-editor-popup",
"data-factory", context->pika->brush_factory,
"context", context,
"data", pika_context_get_brush (context),
NULL);
}
/* private functions */
static void
pika_brush_editor_update_brush (GtkAdjustment *adjustment,
PikaBrushEditor *editor)
{
PikaBrushGenerated *brush;
gdouble value;
if (! PIKA_IS_BRUSH_GENERATED (PIKA_DATA_EDITOR (editor)->data))
return;
brush = PIKA_BRUSH_GENERATED (PIKA_DATA_EDITOR (editor)->data);
g_signal_handlers_block_by_func (brush,
pika_brush_editor_notify_brush,
editor);
value = gtk_adjustment_get_value (adjustment);
if (adjustment == editor->radius_data)
{
if (value != pika_brush_generated_get_radius (brush))
pika_brush_generated_set_radius (brush, value);
}
else if (adjustment == editor->spikes_data)
{
if (ROUND (value) != pika_brush_generated_get_spikes (brush))
pika_brush_generated_set_spikes (brush, ROUND (value));
}
else if (adjustment == editor->hardness_data)
{
if (value != pika_brush_generated_get_hardness (brush))
pika_brush_generated_set_hardness (brush, value);
}
else if (adjustment == editor->aspect_ratio_data)
{
if (value != pika_brush_generated_get_aspect_ratio (brush))
pika_brush_generated_set_aspect_ratio (brush, value);
}
else if (adjustment == editor->angle_data)
{
if (value != pika_brush_generated_get_angle (brush))
pika_brush_generated_set_angle (brush, value);
}
else if (adjustment == editor->spacing_data)
{
if (value != pika_brush_get_spacing (PIKA_BRUSH (brush)))
pika_brush_set_spacing (PIKA_BRUSH (brush), value);
}
g_signal_handlers_unblock_by_func (brush,
pika_brush_editor_notify_brush,
editor);
}
static void
pika_brush_editor_update_shape (GtkWidget *widget,
PikaBrushEditor *editor)
{
PikaBrushGenerated *brush;
if (! PIKA_IS_BRUSH_GENERATED (PIKA_DATA_EDITOR (editor)->data))
return;
brush = PIKA_BRUSH_GENERATED (PIKA_DATA_EDITOR (editor)->data);
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
{
PikaBrushGeneratedShape shape;
shape = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
"pika-item-data"));
if (pika_brush_generated_get_shape (brush) != shape)
pika_brush_generated_set_shape (brush, shape);
}
}
static void
pika_brush_editor_notify_brush (PikaBrushGenerated *brush,
GParamSpec *pspec,
PikaBrushEditor *editor)
{
GtkAdjustment *adj = NULL;
gdouble value = 0.0;
if (! strcmp (pspec->name, "shape"))
{
g_signal_handlers_block_by_func (editor->shape_group,
pika_brush_editor_update_shape,
editor);
pika_int_radio_group_set_active (GTK_RADIO_BUTTON (editor->shape_group),
brush->shape);
g_signal_handlers_unblock_by_func (editor->shape_group,
pika_brush_editor_update_shape,
editor);
}
else if (! strcmp (pspec->name, "radius"))
{
adj = editor->radius_data;
value = pika_brush_generated_get_radius (brush);
}
else if (! strcmp (pspec->name, "spikes"))
{
adj = editor->spikes_data;
value = pika_brush_generated_get_spikes (brush);
}
else if (! strcmp (pspec->name, "hardness"))
{
adj = editor->hardness_data;
value = pika_brush_generated_get_hardness (brush);
}
else if (! strcmp (pspec->name, "angle"))
{
adj = editor->angle_data;
value = pika_brush_generated_get_angle (brush);
}
else if (! strcmp (pspec->name, "aspect-ratio"))
{
adj = editor->aspect_ratio_data;
value = pika_brush_generated_get_aspect_ratio (brush);
}
else if (! strcmp (pspec->name, "spacing"))
{
adj = editor->spacing_data;
value = pika_brush_get_spacing (PIKA_BRUSH (brush));
}
if (adj)
{
g_signal_handlers_block_by_func (adj,
pika_brush_editor_update_brush,
editor);
gtk_adjustment_set_value (adj, value);
g_signal_handlers_unblock_by_func (adj,
pika_brush_editor_update_brush,
editor);
}
}