1 /* GIMP - The GNU Image Manipulation Program
2 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 */
17
18 #include "config.h"
19
20 #include <gegl.h>
21 #include <gtk/gtk.h>
22
23 #include "libgimpmath/gimpmath.h"
24 #include "libgimpwidgets/gimpwidgets.h"
25
26 #include "tools-types.h"
27
28 #include "paint/gimpmybrushoptions.h"
29
30 #include "display/gimpdisplay.h"
31 #include "display/gimpdisplayshell.h"
32 #include "display/gimpcanvasarc.h"
33
34 #include "core/gimp.h"
35
36 #include "widgets/gimphelp-ids.h"
37
38 #include "gimpmybrushoptions-gui.h"
39 #include "gimpmybrushtool.h"
40 #include "gimptoolcontrol.h"
41 #include "core/gimpmybrush.h"
42
43 #include "gimp-intl.h"
44
45 G_DEFINE_TYPE (GimpMybrushTool, gimp_mybrush_tool, GIMP_TYPE_PAINT_TOOL)
46
47 #define parent_class gimp_mybrush_tool_parent_class
48
49
50 static void gimp_mybrush_tool_options_notify (GimpTool *tool,
51 GimpToolOptions *options,
52 const GParamSpec *pspec);
53
54 static GimpCanvasItem * gimp_mybrush_tool_get_outline (GimpPaintTool *paint_tool,
55 GimpDisplay *display,
56 gdouble x,
57 gdouble y);
58
59
60 void
gimp_mybrush_tool_register(GimpToolRegisterCallback callback,gpointer data)61 gimp_mybrush_tool_register (GimpToolRegisterCallback callback,
62 gpointer data)
63 {
64 (* callback) (GIMP_TYPE_MYBRUSH_TOOL,
65 GIMP_TYPE_MYBRUSH_OPTIONS,
66 gimp_mybrush_options_gui,
67 GIMP_CONTEXT_PROP_MASK_FOREGROUND |
68 GIMP_CONTEXT_PROP_MASK_BACKGROUND |
69 GIMP_CONTEXT_PROP_MASK_OPACITY |
70 GIMP_CONTEXT_PROP_MASK_PAINT_MODE |
71 GIMP_CONTEXT_PROP_MASK_MYBRUSH,
72 "gimp-mypaint-brush-tool",
73 _("MyPaint Brush"),
74 _("MyPaint Brush Tool: Use MyPaint brushes in GIMP"),
75 N_("M_yPaint Brush"), "Y",
76 NULL, GIMP_HELP_TOOL_MYPAINT_BRUSH,
77 GIMP_ICON_TOOL_MYPAINT_BRUSH,
78 data);
79 }
80
81 static void
gimp_mybrush_tool_class_init(GimpMybrushToolClass * klass)82 gimp_mybrush_tool_class_init (GimpMybrushToolClass *klass)
83 {
84 GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
85 GimpPaintToolClass *paint_tool_class = GIMP_PAINT_TOOL_CLASS (klass);
86
87 tool_class->options_notify = gimp_mybrush_tool_options_notify;
88
89 paint_tool_class->get_outline = gimp_mybrush_tool_get_outline;
90 }
91
92 static void
gimp_mybrush_tool_init(GimpMybrushTool * mybrush_tool)93 gimp_mybrush_tool_init (GimpMybrushTool *mybrush_tool)
94 {
95 GimpTool *tool = GIMP_TOOL (mybrush_tool);
96
97 gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_INK);
98 gimp_tool_control_set_action_size (tool->control,
99 "tools/tools-mypaint-brush-radius-set");
100 gimp_tool_control_set_action_hardness (tool->control,
101 "tools/tools-mypaint-brush-hardness-set");
102
103 gimp_paint_tool_enable_color_picker (GIMP_PAINT_TOOL (mybrush_tool),
104 GIMP_COLOR_PICK_TARGET_FOREGROUND);
105 }
106
107 static void
gimp_mybrush_tool_options_notify(GimpTool * tool,GimpToolOptions * options,const GParamSpec * pspec)108 gimp_mybrush_tool_options_notify (GimpTool *tool,
109 GimpToolOptions *options,
110 const GParamSpec *pspec)
111 {
112 GIMP_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
113
114 if (! strcmp (pspec->name, "radius"))
115 {
116 gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
117 gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
118 }
119 }
120
121 static GimpCanvasItem *
gimp_mybrush_tool_get_outline(GimpPaintTool * paint_tool,GimpDisplay * display,gdouble x,gdouble y)122 gimp_mybrush_tool_get_outline (GimpPaintTool *paint_tool,
123 GimpDisplay *display,
124 gdouble x,
125 gdouble y)
126 {
127 GimpMybrushOptions *options = GIMP_MYBRUSH_TOOL_GET_OPTIONS (paint_tool);
128 GimpMybrush *brush = gimp_context_get_mybrush (GIMP_CONTEXT (options));
129 GimpCanvasItem *item = NULL;
130 GimpDisplayShell *shell = gimp_display_get_shell (display);
131
132 gdouble radius = exp (options->radius) + 2 * options->radius * gimp_mybrush_get_offset_by_random (brush);
133 radius = MAX (MAX (4 / shell->scale_x, 4 / shell->scale_y), radius);
134
135 item = gimp_mybrush_tool_create_cursor (paint_tool, display, x, y, radius);
136
137 if (! item)
138 {
139 gimp_paint_tool_set_draw_fallback (paint_tool,
140 TRUE, radius);
141 }
142
143 return item;
144 }
145
146 GimpCanvasItem *
gimp_mybrush_tool_create_cursor(GimpPaintTool * paint_tool,GimpDisplay * display,gdouble x,gdouble y,gdouble radius)147 gimp_mybrush_tool_create_cursor (GimpPaintTool *paint_tool,
148 GimpDisplay *display,
149 gdouble x,
150 gdouble y,
151 gdouble radius)
152 {
153
154 GimpDisplayShell *shell;
155
156 g_return_val_if_fail (GIMP_IS_PAINT_TOOL (paint_tool), NULL);
157 g_return_val_if_fail (GIMP_IS_DISPLAY (display), NULL);
158
159 shell = gimp_display_get_shell (display);
160
161 /* don't draw the boundary if it becomes too small */
162 if (SCALEX (shell, radius) > 4 &&
163 SCALEY (shell, radius) > 4)
164 {
165 return gimp_canvas_arc_new(shell, x, y, radius, radius, 0.0, 2 * G_PI, FALSE);
166 }
167
168 return NULL;
169 }
170