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-rw-r--r--app/tools/gimpmybrushtool.c169
1 files changed, 169 insertions, 0 deletions
diff --git a/app/tools/gimpmybrushtool.c b/app/tools/gimpmybrushtool.c
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+++ b/app/tools/gimpmybrushtool.c
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+/* GIMP - The GNU Image Manipulation Program
+ * 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 "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "tools-types.h"
+
+#include "paint/gimpmybrushoptions.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+#include "display/gimpcanvasarc.h"
+
+#include "core/gimp.h"
+
+#include "widgets/gimphelp-ids.h"
+
+#include "gimpmybrushoptions-gui.h"
+#include "gimpmybrushtool.h"
+#include "gimptoolcontrol.h"
+#include "core/gimpmybrush.h"
+
+#include "gimp-intl.h"
+
+G_DEFINE_TYPE (GimpMybrushTool, gimp_mybrush_tool, GIMP_TYPE_PAINT_TOOL)
+
+#define parent_class gimp_mybrush_tool_parent_class
+
+
+static void gimp_mybrush_tool_options_notify (GimpTool *tool,
+ GimpToolOptions *options,
+ const GParamSpec *pspec);
+
+static GimpCanvasItem * gimp_mybrush_tool_get_outline (GimpPaintTool *paint_tool,
+ GimpDisplay *display,
+ gdouble x,
+ gdouble y);
+
+
+void
+gimp_mybrush_tool_register (GimpToolRegisterCallback callback,
+ gpointer data)
+{
+ (* callback) (GIMP_TYPE_MYBRUSH_TOOL,
+ GIMP_TYPE_MYBRUSH_OPTIONS,
+ gimp_mybrush_options_gui,
+ GIMP_CONTEXT_PROP_MASK_FOREGROUND |
+ GIMP_CONTEXT_PROP_MASK_BACKGROUND |
+ GIMP_CONTEXT_PROP_MASK_OPACITY |
+ GIMP_CONTEXT_PROP_MASK_PAINT_MODE |
+ GIMP_CONTEXT_PROP_MASK_MYBRUSH,
+ "gimp-mypaint-brush-tool",
+ _("MyPaint Brush"),
+ _("MyPaint Brush Tool: Use MyPaint brushes in GIMP"),
+ N_("M_yPaint Brush"), "Y",
+ NULL, GIMP_HELP_TOOL_MYPAINT_BRUSH,
+ GIMP_ICON_TOOL_MYPAINT_BRUSH,
+ data);
+}
+
+static void
+gimp_mybrush_tool_class_init (GimpMybrushToolClass *klass)
+{
+ GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
+ GimpPaintToolClass *paint_tool_class = GIMP_PAINT_TOOL_CLASS (klass);
+
+ tool_class->options_notify = gimp_mybrush_tool_options_notify;
+
+ paint_tool_class->get_outline = gimp_mybrush_tool_get_outline;
+}
+
+static void
+gimp_mybrush_tool_init (GimpMybrushTool *mybrush_tool)
+{
+ GimpTool *tool = GIMP_TOOL (mybrush_tool);
+
+ gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_INK);
+ gimp_tool_control_set_action_size (tool->control,
+ "tools/tools-mypaint-brush-radius-set");
+ gimp_tool_control_set_action_hardness (tool->control,
+ "tools/tools-mypaint-brush-hardness-set");
+
+ gimp_paint_tool_enable_color_picker (GIMP_PAINT_TOOL (mybrush_tool),
+ GIMP_COLOR_PICK_TARGET_FOREGROUND);
+}
+
+static void
+gimp_mybrush_tool_options_notify (GimpTool *tool,
+ GimpToolOptions *options,
+ const GParamSpec *pspec)
+{
+ GIMP_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
+
+ if (! strcmp (pspec->name, "radius"))
+ {
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+ }
+}
+
+static GimpCanvasItem *
+gimp_mybrush_tool_get_outline (GimpPaintTool *paint_tool,
+ GimpDisplay *display,
+ gdouble x,
+ gdouble y)
+{
+ GimpMybrushOptions *options = GIMP_MYBRUSH_TOOL_GET_OPTIONS (paint_tool);
+ GimpMybrush *brush = gimp_context_get_mybrush (GIMP_CONTEXT (options));
+ GimpCanvasItem *item = NULL;
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+
+ gdouble radius = exp (options->radius) + 2 * options->radius * gimp_mybrush_get_offset_by_random (brush);
+ radius = MAX (MAX (4 / shell->scale_x, 4 / shell->scale_y), radius);
+
+ item = gimp_mybrush_tool_create_cursor (paint_tool, display, x, y, radius);
+
+ if (! item)
+ {
+ gimp_paint_tool_set_draw_fallback (paint_tool,
+ TRUE, radius);
+ }
+
+ return item;
+}
+
+GimpCanvasItem *
+gimp_mybrush_tool_create_cursor (GimpPaintTool *paint_tool,
+ GimpDisplay *display,
+ gdouble x,
+ gdouble y,
+ gdouble radius)
+{
+
+ GimpDisplayShell *shell;
+
+ g_return_val_if_fail (GIMP_IS_PAINT_TOOL (paint_tool), NULL);
+ g_return_val_if_fail (GIMP_IS_DISPLAY (display), NULL);
+
+ shell = gimp_display_get_shell (display);
+
+ /* don't draw the boundary if it becomes too small */
+ if (SCALEX (shell, radius) > 4 &&
+ SCALEY (shell, radius) > 4)
+ {
+ return gimp_canvas_arc_new(shell, x, y, radius, radius, 0.0, 2 * G_PI, FALSE);
+ }
+
+ return NULL;
+}