PIKApp/app/tools/pikasourcetool.c

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2023-09-26 00:35:21 +02:00
/* 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 "libpikamath/pikamath.h"
#include "tools-types.h"
#include "core/pikachannel.h"
#include "core/pikaimage.h"
#include "core/pikapickable.h"
#include "paint/pikasourcecore.h"
#include "paint/pikasourceoptions.h"
#include "widgets/pikawidgets-utils.h"
#include "display/pikacanvashandle.h"
#include "display/pikadisplay.h"
#include "display/pikadisplayshell.h"
#include "display/pikadisplayshell-items.h"
#include "pikasourcetool.h"
#include "pikatoolcontrol.h"
#include "pika-intl.h"
static gboolean pika_source_tool_has_display (PikaTool *tool,
PikaDisplay *display);
static PikaDisplay * pika_source_tool_has_image (PikaTool *tool,
PikaImage *image);
static void pika_source_tool_control (PikaTool *tool,
PikaToolAction action,
PikaDisplay *display);
static void pika_source_tool_button_press (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonPressType press_type,
PikaDisplay *display);
static void pika_source_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display);
static void pika_source_tool_cursor_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
PikaDisplay *display);
static void pika_source_tool_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display);
static void pika_source_tool_oper_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
gboolean proximity,
PikaDisplay *display);
static void pika_source_tool_draw (PikaDrawTool *draw_tool);
static void pika_source_tool_paint_prepare (PikaPaintTool *paint_tool,
PikaDisplay *display);
static void pika_source_tool_set_src_display (PikaSourceTool *source_tool,
PikaDisplay *display);
G_DEFINE_TYPE (PikaSourceTool, pika_source_tool, PIKA_TYPE_BRUSH_TOOL)
#define parent_class pika_source_tool_parent_class
static void
pika_source_tool_class_init (PikaSourceToolClass *klass)
{
PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
PikaDrawToolClass *draw_tool_class = PIKA_DRAW_TOOL_CLASS (klass);
PikaPaintToolClass *paint_tool_class = PIKA_PAINT_TOOL_CLASS (klass);
tool_class->has_display = pika_source_tool_has_display;
tool_class->has_image = pika_source_tool_has_image;
tool_class->control = pika_source_tool_control;
tool_class->button_press = pika_source_tool_button_press;
tool_class->motion = pika_source_tool_motion;
tool_class->modifier_key = pika_source_tool_modifier_key;
tool_class->oper_update = pika_source_tool_oper_update;
tool_class->cursor_update = pika_source_tool_cursor_update;
draw_tool_class->draw = pika_source_tool_draw;
paint_tool_class->paint_prepare = pika_source_tool_paint_prepare;
}
static void
pika_source_tool_init (PikaSourceTool *source)
{
source->show_source_outline = TRUE;
pika_paint_tool_enable_multi_paint (PIKA_PAINT_TOOL (source));
}
static gboolean
pika_source_tool_has_display (PikaTool *tool,
PikaDisplay *display)
{
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (tool);
return (display == source_tool->src_display ||
PIKA_TOOL_CLASS (parent_class)->has_display (tool, display));
}
static PikaDisplay *
pika_source_tool_has_image (PikaTool *tool,
PikaImage *image)
{
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (tool);
PikaDisplay *display;
display = PIKA_TOOL_CLASS (parent_class)->has_image (tool, image);
if (! display && source_tool->src_display)
{
if (image && pika_display_get_image (source_tool->src_display) == image)
display = source_tool->src_display;
/* NULL image means any display */
if (! image)
display = source_tool->src_display;
}
return display;
}
static void
pika_source_tool_control (PikaTool *tool,
PikaToolAction action,
PikaDisplay *display)
{
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (tool);
PikaSourceOptions *options = PIKA_SOURCE_TOOL_GET_OPTIONS (tool);
switch (action)
{
case PIKA_TOOL_ACTION_PAUSE:
case PIKA_TOOL_ACTION_RESUME:
break;
case PIKA_TOOL_ACTION_HALT:
pika_source_tool_set_src_display (source_tool, NULL);
g_object_set (options,
"src-drawables", NULL,
"src-x", 0,
"src-y", 0,
NULL);
break;
case PIKA_TOOL_ACTION_COMMIT:
break;
}
PIKA_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
pika_source_tool_button_press (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonPressType press_type,
PikaDisplay *display)
{
PikaPaintTool *paint_tool = PIKA_PAINT_TOOL (tool);
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (tool);
PikaSourceCore *source = PIKA_SOURCE_CORE (paint_tool->core);
PikaSourceOptions *options = PIKA_SOURCE_TOOL_GET_OPTIONS (tool);
GdkModifierType extend_mask = pika_get_extend_selection_mask ();
GdkModifierType toggle_mask = pika_get_toggle_behavior_mask ();
pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
if ((state & (toggle_mask | extend_mask)) == toggle_mask)
{
source->set_source = TRUE;
pika_source_tool_set_src_display (source_tool, display);
}
else
{
source->set_source = FALSE;
}
PIKA_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
press_type, display);
g_object_get (options,
"src-x", &source_tool->src_x,
"src-y", &source_tool->src_y,
NULL);
pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
}
static void
pika_source_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display)
{
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (tool);
PikaSourceOptions *options = PIKA_SOURCE_TOOL_GET_OPTIONS (tool);
pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
PIKA_TOOL_CLASS (parent_class)->motion (tool, coords, time, state, display);
g_object_get (options,
"src-x", &source_tool->src_x,
"src-y", &source_tool->src_y,
NULL);
pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
}
static void
pika_source_tool_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display)
{
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (tool);
PikaPaintTool *paint_tool = PIKA_PAINT_TOOL (tool);
PikaSourceOptions *options = PIKA_SOURCE_TOOL_GET_OPTIONS (tool);
if (pika_source_core_use_source (PIKA_SOURCE_CORE (paint_tool->core),
options) &&
key == pika_get_toggle_behavior_mask ())
{
pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
if (press)
{
paint_tool->status = source_tool->status_set_source;
source_tool->show_source_outline = FALSE;
source_tool->saved_precision =
pika_tool_control_get_precision (tool->control);
pika_tool_control_set_precision (tool->control,
PIKA_CURSOR_PRECISION_PIXEL_CENTER);
}
else
{
paint_tool->status = source_tool->status_paint;
source_tool->show_source_outline = TRUE;
pika_tool_control_set_precision (tool->control,
source_tool->saved_precision);
}
pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
}
PIKA_TOOL_CLASS (parent_class)->modifier_key (tool, key, press, state,
display);
}
static void
pika_source_tool_cursor_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
PikaDisplay *display)
{
PikaPaintTool *paint_tool = PIKA_PAINT_TOOL (tool);
PikaSourceOptions *options = PIKA_SOURCE_TOOL_GET_OPTIONS (tool);
PikaCursorType cursor = PIKA_CURSOR_MOUSE;
PikaCursorModifier modifier = PIKA_CURSOR_MODIFIER_NONE;
if (pika_source_core_use_source (PIKA_SOURCE_CORE (paint_tool->core),
options))
{
GdkModifierType extend_mask = pika_get_extend_selection_mask ();
GdkModifierType toggle_mask = pika_get_toggle_behavior_mask ();
if ((state & (toggle_mask | extend_mask)) == toggle_mask)
{
cursor = PIKA_CURSOR_CROSSHAIR_SMALL;
}
else if (! options->src_drawables)
{
modifier = PIKA_CURSOR_MODIFIER_BAD;
}
}
pika_tool_control_set_cursor (tool->control, cursor);
pika_tool_control_set_cursor_modifier (tool->control, modifier);
PIKA_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
pika_source_tool_oper_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
gboolean proximity,
PikaDisplay *display)
{
PikaPaintTool *paint_tool = PIKA_PAINT_TOOL (tool);
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (tool);
PikaSourceOptions *options = PIKA_SOURCE_TOOL_GET_OPTIONS (tool);
PikaSourceCore *source;
source = PIKA_SOURCE_CORE (PIKA_PAINT_TOOL (tool)->core);
if (proximity)
{
if (pika_source_core_use_source (source, options))
paint_tool->status_ctrl = source_tool->status_set_source_ctrl;
else
paint_tool->status_ctrl = NULL;
}
PIKA_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
display);
if (pika_source_core_use_source (source, options))
{
if (options->src_drawables == NULL)
{
GdkModifierType toggle_mask = pika_get_toggle_behavior_mask ();
if (state & toggle_mask)
{
pika_tool_replace_status (tool, display, "%s",
source_tool->status_set_source);
}
else
{
pika_tool_replace_status (tool, display, "%s-%s",
pika_get_mod_string (toggle_mask),
source_tool->status_set_source);
}
}
else
{
pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
g_object_get (options,
"src-x", &source_tool->src_x,
"src-y", &source_tool->src_y,
NULL);
if (! source->first_stroke)
{
switch (options->align_mode)
{
case PIKA_SOURCE_ALIGN_YES:
source_tool->src_x = floor (coords->x) + source->offset_x;
source_tool->src_y = floor (coords->y) + source->offset_y;
break;
case PIKA_SOURCE_ALIGN_REGISTERED:
source_tool->src_x = floor (coords->x);
source_tool->src_y = floor (coords->y);
break;
default:
break;
}
}
pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
}
}
}
static void
pika_source_tool_draw (PikaDrawTool *draw_tool)
{
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (draw_tool);
PikaSourceOptions *options = PIKA_SOURCE_TOOL_GET_OPTIONS (draw_tool);
PikaSourceCore *source;
source = PIKA_SOURCE_CORE (PIKA_PAINT_TOOL (draw_tool)->core);
PIKA_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
if (pika_source_core_use_source (source, options) &&
options->src_drawables && source_tool->src_display)
{
PikaDisplayShell *src_shell;
gdouble src_x;
gdouble src_y;
src_shell = pika_display_get_shell (source_tool->src_display);
src_x = (gdouble) source_tool->src_x + 0.5;
src_y = (gdouble) source_tool->src_y + 0.5;
if (source_tool->src_outline)
{
pika_display_shell_remove_tool_item (src_shell,
source_tool->src_outline);
source_tool->src_outline = NULL;
}
if (source_tool->show_source_outline)
{
source_tool->src_outline =
pika_brush_tool_create_outline (PIKA_BRUSH_TOOL (source_tool),
source_tool->src_display,
src_x, src_y);
if (source_tool->src_outline)
{
pika_display_shell_add_tool_item (src_shell,
source_tool->src_outline);
g_object_unref (source_tool->src_outline);
}
}
if (source_tool->src_outline)
{
if (source_tool->src_handle)
{
pika_display_shell_remove_tool_item (src_shell,
source_tool->src_handle);
source_tool->src_handle = NULL;
}
}
else
{
if (! source_tool->src_handle)
{
source_tool->src_handle =
pika_canvas_handle_new (src_shell,
PIKA_HANDLE_CROSS,
PIKA_HANDLE_ANCHOR_CENTER,
src_x, src_y,
PIKA_TOOL_HANDLE_SIZE_CROSS,
PIKA_TOOL_HANDLE_SIZE_CROSS);
pika_display_shell_add_tool_item (src_shell,
source_tool->src_handle);
g_object_unref (source_tool->src_handle);
}
else
{
pika_canvas_handle_set_position (source_tool->src_handle,
src_x, src_y);
}
}
}
}
static void
pika_source_tool_paint_prepare (PikaPaintTool *paint_tool,
PikaDisplay *display)
{
PikaSourceTool *source_tool = PIKA_SOURCE_TOOL (paint_tool);
if (PIKA_PAINT_TOOL_CLASS (parent_class)->paint_prepare)
PIKA_PAINT_TOOL_CLASS (parent_class)->paint_prepare (paint_tool, display);
if (source_tool->src_display)
{
PikaDisplayShell *src_shell;
src_shell = pika_display_get_shell (source_tool->src_display);
pika_paint_core_set_show_all (paint_tool->core, src_shell->show_all);
}
}
static void
pika_source_tool_set_src_display (PikaSourceTool *source_tool,
PikaDisplay *display)
{
if (source_tool->src_display != display)
{
if (source_tool->src_display)
{
PikaDisplayShell *src_shell;
src_shell = pika_display_get_shell (source_tool->src_display);
if (source_tool->src_handle)
{
pika_display_shell_remove_tool_item (src_shell,
source_tool->src_handle);
source_tool->src_handle = NULL;
}
if (source_tool->src_outline)
{
pika_display_shell_remove_tool_item (src_shell,
source_tool->src_outline);
source_tool->src_outline = NULL;
}
}
source_tool->src_display = display;
}
}