PIKApp/app/tools/pikainktool.c

156 lines
5.6 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
*
* 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 <gegl.h>
#include <gtk/gtk.h>
#include "libpikawidgets/pikawidgets.h"
#include "tools-types.h"
#include "operations/layer-modes/pika-layer-modes.h"
#include "paint/pikainkoptions.h"
#include "widgets/pikahelp-ids.h"
#include "pikainkoptions-gui.h"
#include "pikainktool.h"
#include "pikatoolcontrol.h"
#include "pika-intl.h"
static PikaCanvasItem * pika_ink_tool_get_outline (PikaPaintTool *paint_tool,
PikaDisplay *display,
gdouble x,
gdouble y);
static gboolean pika_ink_tool_is_alpha_only (PikaPaintTool *paint_tool,
PikaDrawable *drawable);
static void pika_ink_tool_options_notify (PikaTool *tool,
PikaToolOptions *options,
const GParamSpec *pspec);
G_DEFINE_TYPE (PikaInkTool, pika_ink_tool, PIKA_TYPE_PAINT_TOOL)
#define parent_class pika_ink_tool_parent_class
void
pika_ink_tool_register (PikaToolRegisterCallback callback,
gpointer data)
{
(* callback) (PIKA_TYPE_INK_TOOL,
PIKA_TYPE_INK_OPTIONS,
pika_ink_options_gui,
PIKA_CONTEXT_PROP_MASK_FOREGROUND |
PIKA_CONTEXT_PROP_MASK_BACKGROUND |
PIKA_CONTEXT_PROP_MASK_OPACITY |
PIKA_CONTEXT_PROP_MASK_PAINT_MODE |
PIKA_CONTEXT_PROP_MASK_PATTERN |
PIKA_CONTEXT_PROP_MASK_EXPAND,
"pika-ink-tool",
_("Ink"),
_("Ink Tool: Calligraphy-style painting"),
N_("In_k"), "K",
NULL, PIKA_HELP_TOOL_INK,
PIKA_ICON_TOOL_INK,
data);
}
static void
pika_ink_tool_class_init (PikaInkToolClass *klass)
{
PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
PikaPaintToolClass *paint_tool_class = PIKA_PAINT_TOOL_CLASS (klass);
tool_class->options_notify = pika_ink_tool_options_notify;
paint_tool_class->get_outline = pika_ink_tool_get_outline;
paint_tool_class->is_alpha_only = pika_ink_tool_is_alpha_only;
}
static void
pika_ink_tool_init (PikaInkTool *ink_tool)
{
PikaTool *tool = PIKA_TOOL (ink_tool);
pika_tool_control_set_tool_cursor (tool->control, PIKA_TOOL_CURSOR_INK);
pika_tool_control_set_action_pixel_size (tool->control,
"tools-ink-blob-pixel-size-set");
pika_tool_control_set_action_size (tool->control,
"tools-ink-blob-size-set");
pika_tool_control_set_action_aspect (tool->control,
"tools-ink-blob-aspect-set");
pika_tool_control_set_action_angle (tool->control,
"tools-ink-blob-angle-set");
pika_paint_tool_enable_color_picker (PIKA_PAINT_TOOL (ink_tool),
PIKA_COLOR_PICK_TARGET_FOREGROUND);
}
static void
pika_ink_tool_options_notify (PikaTool *tool,
PikaToolOptions *options,
const GParamSpec *pspec)
{
PIKA_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
if (g_strcmp0 (pspec->name, "size") == 0 &&
PIKA_PAINT_TOOL (tool)->draw_brush)
{
/* This triggers a redraw of the tool pointer, especially useful
* here when we change the pen size with on-canvas interaction.
*/
pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
}
}
static PikaCanvasItem *
pika_ink_tool_get_outline (PikaPaintTool *paint_tool,
PikaDisplay *display,
gdouble x,
gdouble y)
{
PikaInkOptions *options = PIKA_INK_TOOL_GET_OPTIONS (paint_tool);
pika_paint_tool_set_draw_circle (paint_tool, TRUE,
options->size);
return NULL;
}
static gboolean
pika_ink_tool_is_alpha_only (PikaPaintTool *paint_tool,
PikaDrawable *drawable)
{
PikaPaintOptions *paint_options = PIKA_PAINT_TOOL_GET_OPTIONS (paint_tool);
PikaContext *context = PIKA_CONTEXT (paint_options);
PikaLayerMode paint_mode = pika_context_get_paint_mode (context);
return pika_layer_mode_is_alpha_only (paint_mode);
}