Adding upstream version 2.10.36.upstream/2.10.36

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 451 insertions, 0 deletions

diff --git a/app/tools/gimpbrushtool.c b/app/tools/gimpbrushtool.c
new file mode 100644
index 0000000..08c8ed9
--- /dev/null
+++ b/app/tools/gimpbrushtool.c
@@ -0,0 +1,451 @@
+/* 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 <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpmath/gimpmath.h"
+
+#include "tools-types.h"
+
+#include "config/gimpdisplayconfig.h"
+
+#include "core/gimp.h"
+#include "core/gimpbezierdesc.h"
+#include "core/gimpbrush.h"
+#include "core/gimpimage.h"
+#include "core/gimptoolinfo.h"
+
+#include "paint/gimpbrushcore.h"
+#include "paint/gimppaintoptions.h"
+
+#include "display/gimpcanvashandle.h"
+#include "display/gimpcanvaspath.h"
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+
+#include "gimpbrushtool.h"
+#include "gimppainttool-paint.h"
+#include "gimptoolcontrol.h"
+
+
+static void   gimp_brush_tool_constructed     (GObject           *object);
+
+static void   gimp_brush_tool_oper_update     (GimpTool          *tool,
+                                               const GimpCoords  *coords,
+                                               GdkModifierType    state,
+                                               gboolean           proximity,
+                                               GimpDisplay       *display);
+static void   gimp_brush_tool_cursor_update   (GimpTool          *tool,
+                                               const GimpCoords  *coords,
+                                               GdkModifierType    state,
+                                               GimpDisplay       *display);
+static void   gimp_brush_tool_options_notify  (GimpTool          *tool,
+                                               GimpToolOptions   *options,
+                                               const GParamSpec  *pspec);
+
+static void   gimp_brush_tool_paint_start     (GimpPaintTool     *paint_tool);
+static void   gimp_brush_tool_paint_end       (GimpPaintTool     *paint_tool);
+static void   gimp_brush_tool_paint_flush     (GimpPaintTool     *paint_tool);
+static GimpCanvasItem *
+              gimp_brush_tool_get_outline     (GimpPaintTool     *paint_tool,
+                                               GimpDisplay       *display,
+                                               gdouble            x,
+                                               gdouble            y);
+
+static void   gimp_brush_tool_brush_changed   (GimpContext       *context,
+                                               GimpBrush         *brush,
+                                               GimpBrushTool     *brush_tool);
+static void   gimp_brush_tool_set_brush       (GimpBrushCore     *brush_core,
+                                               GimpBrush         *brush,
+                                               GimpBrushTool     *brush_tool);
+
+static const GimpBezierDesc *
+                 gimp_brush_tool_get_boundary (GimpBrushTool     *brush_tool,
+                                               gint              *width,
+                                               gint              *height);
+
+
+G_DEFINE_TYPE (GimpBrushTool, gimp_brush_tool, GIMP_TYPE_PAINT_TOOL)
+
+#define parent_class gimp_brush_tool_parent_class
+
+
+static void
+gimp_brush_tool_class_init (GimpBrushToolClass *klass)
+{
+  GObjectClass       *object_class     = G_OBJECT_CLASS (klass);
+  GimpToolClass      *tool_class       = GIMP_TOOL_CLASS (klass);
+  GimpPaintToolClass *paint_tool_class = GIMP_PAINT_TOOL_CLASS (klass);
+
+  object_class->constructed     = gimp_brush_tool_constructed;
+
+  tool_class->oper_update       = gimp_brush_tool_oper_update;
+  tool_class->cursor_update     = gimp_brush_tool_cursor_update;
+  tool_class->options_notify    = gimp_brush_tool_options_notify;
+
+  paint_tool_class->paint_start = gimp_brush_tool_paint_start;
+  paint_tool_class->paint_end   = gimp_brush_tool_paint_end;
+  paint_tool_class->paint_flush = gimp_brush_tool_paint_flush;
+  paint_tool_class->get_outline = gimp_brush_tool_get_outline;
+}
+
+static void
+gimp_brush_tool_init (GimpBrushTool *brush_tool)
+{
+  GimpTool *tool = GIMP_TOOL (brush_tool);
+
+  gimp_tool_control_set_action_size     (tool->control,
+                                         "tools/tools-paintbrush-size-set");
+  gimp_tool_control_set_action_aspect   (tool->control,
+                                         "tools/tools-paintbrush-aspect-ratio-set");
+  gimp_tool_control_set_action_angle    (tool->control,
+                                         "tools/tools-paintbrush-angle-set");
+  gimp_tool_control_set_action_spacing  (tool->control,
+                                         "tools/tools-paintbrush-spacing-set");
+  gimp_tool_control_set_action_hardness (tool->control,
+                                         "tools/tools-paintbrush-hardness-set");
+  gimp_tool_control_set_action_force    (tool->control,
+                                         "tools/tools-paintbrush-force-set");
+  gimp_tool_control_set_action_object_1 (tool->control,
+                                         "context/context-brush-select-set");
+}
+
+static void
+gimp_brush_tool_constructed (GObject *object)
+{
+  GimpTool      *tool       = GIMP_TOOL (object);
+  GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (object);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+
+  gimp_assert (GIMP_IS_BRUSH_CORE (paint_tool->core));
+
+  g_signal_connect_object (gimp_tool_get_options (tool), "brush-changed",
+                           G_CALLBACK (gimp_brush_tool_brush_changed),
+                           paint_tool, 0);
+
+  g_signal_connect_object (paint_tool->core, "set-brush",
+                           G_CALLBACK (gimp_brush_tool_set_brush),
+                           paint_tool, 0);
+}
+
+static void
+gimp_brush_tool_oper_update (GimpTool         *tool,
+                             const GimpCoords *coords,
+                             GdkModifierType   state,
+                             gboolean          proximity,
+                             GimpDisplay      *display)
+{
+  GimpPaintOptions *paint_options = GIMP_PAINT_TOOL_GET_OPTIONS (tool);
+  GimpDrawable     *drawable;
+
+  gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+
+  GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state,
+                                               proximity, display);
+
+  drawable = gimp_image_get_active_drawable (gimp_display_get_image (display));
+
+  if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)) &&
+      drawable && proximity)
+    {
+      GimpContext   *context    = GIMP_CONTEXT (paint_options);
+      GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+      GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
+
+      gimp_brush_core_set_brush (brush_core,
+                                 gimp_context_get_brush (context));
+
+      gimp_brush_core_set_dynamics (brush_core,
+                                    gimp_context_get_dynamics (context));
+
+      if (GIMP_BRUSH_CORE_GET_CLASS (brush_core)->handles_transforming_brush)
+        {
+          gimp_brush_core_eval_transform_dynamics (brush_core,
+                                                   drawable,
+                                                   paint_options,
+                                                   coords);
+        }
+    }
+
+  gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+}
+
+static void
+gimp_brush_tool_cursor_update (GimpTool         *tool,
+                               const GimpCoords *coords,
+                               GdkModifierType   state,
+                               GimpDisplay      *display)
+{
+  GimpBrushTool *brush_tool = GIMP_BRUSH_TOOL (tool);
+  GimpBrushCore *brush_core = GIMP_BRUSH_CORE (GIMP_PAINT_TOOL (brush_tool)->core);
+
+  if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
+    {
+      if (! brush_core->main_brush || ! brush_core->dynamics)
+        {
+          gimp_tool_set_cursor (tool, display,
+                                gimp_tool_control_get_cursor (tool->control),
+                                gimp_tool_control_get_tool_cursor (tool->control),
+                                GIMP_CURSOR_MODIFIER_BAD);
+          return;
+        }
+    }
+
+  GIMP_TOOL_CLASS (parent_class)->cursor_update (tool,  coords, state, display);
+}
+
+static void
+gimp_brush_tool_options_notify (GimpTool         *tool,
+                                GimpToolOptions  *options,
+                                const GParamSpec *pspec)
+{
+  GIMP_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
+
+  if (! strcmp (pspec->name, "brush-size")  ||
+      ! strcmp (pspec->name, "brush-angle") ||
+      ! strcmp (pspec->name, "brush-aspect-ratio"))
+    {
+      GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
+      GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
+
+      g_signal_emit_by_name (brush_core, "set-brush",
+                             brush_core->main_brush);
+    }
+}
+
+static void
+gimp_brush_tool_paint_start (GimpPaintTool *paint_tool)
+{
+  GimpBrushTool        *brush_tool = GIMP_BRUSH_TOOL (paint_tool);
+  GimpBrushCore        *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
+  const GimpBezierDesc *boundary;
+
+  if (GIMP_PAINT_TOOL_CLASS (parent_class)->paint_start)
+    GIMP_PAINT_TOOL_CLASS (parent_class)->paint_start (paint_tool);
+
+  boundary = gimp_brush_tool_get_boundary (brush_tool,
+                                           &brush_tool->boundary_width,
+                                           &brush_tool->boundary_height);
+
+  if (boundary)
+    brush_tool->boundary = gimp_bezier_desc_copy (boundary);
+
+  brush_tool->boundary_scale        = brush_core->scale;
+  brush_tool->boundary_aspect_ratio = brush_core->aspect_ratio;
+  brush_tool->boundary_angle        = brush_core->angle;
+  brush_tool->boundary_reflect      = brush_core->reflect;
+  brush_tool->boundary_hardness     = brush_core->hardness;
+}
+
+static void
+gimp_brush_tool_paint_end (GimpPaintTool *paint_tool)
+{
+  GimpBrushTool *brush_tool = GIMP_BRUSH_TOOL (paint_tool);
+
+  g_clear_pointer (&brush_tool->boundary, gimp_bezier_desc_free);
+
+  if (GIMP_PAINT_TOOL_CLASS (parent_class)->paint_end)
+    GIMP_PAINT_TOOL_CLASS (parent_class)->paint_end (paint_tool);
+}
+
+static void
+gimp_brush_tool_paint_flush (GimpPaintTool *paint_tool)
+{
+  GimpBrushTool        *brush_tool = GIMP_BRUSH_TOOL (paint_tool);
+  GimpBrushCore        *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
+  const GimpBezierDesc *boundary;
+
+  if (GIMP_PAINT_TOOL_CLASS (parent_class)->paint_flush)
+    GIMP_PAINT_TOOL_CLASS (parent_class)->paint_flush (paint_tool);
+
+  if (brush_tool->boundary_scale        != brush_core->scale        ||
+      brush_tool->boundary_aspect_ratio != brush_core->aspect_ratio ||
+      brush_tool->boundary_angle        != brush_core->angle        ||
+      brush_tool->boundary_reflect      != brush_core->reflect      ||
+      brush_tool->boundary_hardness     != brush_core->hardness)
+    {
+      g_clear_pointer (&brush_tool->boundary, gimp_bezier_desc_free);
+
+      boundary = gimp_brush_tool_get_boundary (brush_tool,
+                                               &brush_tool->boundary_width,
+                                               &brush_tool->boundary_height);
+
+      if (boundary)
+        brush_tool->boundary = gimp_bezier_desc_copy (boundary);
+
+      brush_tool->boundary_scale        = brush_core->scale;
+      brush_tool->boundary_aspect_ratio = brush_core->aspect_ratio;
+      brush_tool->boundary_angle        = brush_core->angle;
+      brush_tool->boundary_reflect      = brush_core->reflect;
+      brush_tool->boundary_hardness     = brush_core->hardness;
+    }
+}
+
+static GimpCanvasItem *
+gimp_brush_tool_get_outline (GimpPaintTool *paint_tool,
+                             GimpDisplay   *display,
+                             gdouble        x,
+                             gdouble        y)
+{
+  GimpBrushTool  *brush_tool = GIMP_BRUSH_TOOL (paint_tool);
+  GimpCanvasItem *item;
+
+  item = gimp_brush_tool_create_outline (brush_tool, display, x, y);
+
+  if (! item)
+    {
+      GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
+
+      if (brush_core->main_brush && brush_core->dynamics)
+        {
+          /*  if an outline was expected, but got scaled away by
+           *  transform/dynamics, draw a circle in the "normal" size.
+           */
+          GimpPaintOptions *options;
+
+          options = GIMP_PAINT_TOOL_GET_OPTIONS (brush_tool);
+
+          gimp_paint_tool_set_draw_fallback (paint_tool,
+                                             TRUE, options->brush_size);
+        }
+    }
+
+  return item;
+}
+
+GimpCanvasItem *
+gimp_brush_tool_create_outline (GimpBrushTool *brush_tool,
+                                GimpDisplay   *display,
+                                gdouble        x,
+                                gdouble        y)
+{
+  GimpTool             *tool;
+  GimpDisplayShell     *shell;
+  const GimpBezierDesc *boundary = NULL;
+  gint                  width    = 0;
+  gint                  height   = 0;
+
+  g_return_val_if_fail (GIMP_IS_BRUSH_TOOL (brush_tool), NULL);
+  g_return_val_if_fail (GIMP_IS_DISPLAY (display), NULL);
+
+  if (gimp_paint_tool_paint_is_active (GIMP_PAINT_TOOL (brush_tool)))
+    {
+      boundary = brush_tool->boundary;
+      width    = brush_tool->boundary_width;
+      height   = brush_tool->boundary_height;
+    }
+  else
+    {
+      boundary = gimp_brush_tool_get_boundary (brush_tool, &width, &height);
+    }
+
+  if (! boundary)
+    return NULL;
+
+  tool  = GIMP_TOOL (brush_tool);
+  shell = gimp_display_get_shell (display);
+
+  /*  don't draw the boundary if it becomes too small  */
+  if (SCALEX (shell, width)  > 4 &&
+      SCALEY (shell, height) > 4)
+    {
+      x -= width  / 2.0;
+      y -= height / 2.0;
+
+      if (gimp_tool_control_get_precision (tool->control) ==
+          GIMP_CURSOR_PRECISION_PIXEL_CENTER)
+        {
+#define EPSILON 0.000001
+          /*  Add EPSILON before rounding since e.g.
+           *  (5.0 - 0.5) may end up at (4.499999999....)
+           *  due to floating point fnords
+           */
+          x = RINT (x + EPSILON);
+          y = RINT (y + EPSILON);
+#undef EPSILON
+        }
+
+      return gimp_canvas_path_new (shell, boundary, x, y, FALSE,
+                                   GIMP_PATH_STYLE_OUTLINE);
+    }
+
+  return NULL;
+}
+
+static void
+gimp_brush_tool_brush_changed (GimpContext   *context,
+                               GimpBrush     *brush,
+                               GimpBrushTool *brush_tool)
+{
+  GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (brush_tool);
+  GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
+
+  gimp_brush_core_set_brush (brush_core, brush);
+
+}
+
+static void
+gimp_brush_tool_set_brush (GimpBrushCore *brush_core,
+                           GimpBrush     *brush,
+                           GimpBrushTool *brush_tool)
+{
+  gimp_draw_tool_pause (GIMP_DRAW_TOOL (brush_tool));
+
+  if (GIMP_BRUSH_CORE_GET_CLASS (brush_core)->handles_transforming_brush)
+    {
+      GimpPaintCore *paint_core = GIMP_PAINT_CORE (brush_core);
+
+      gimp_brush_core_eval_transform_dynamics (brush_core,
+                                               NULL,
+                                               GIMP_PAINT_TOOL_GET_OPTIONS (brush_tool),
+                                               &paint_core->cur_coords);
+    }
+
+  gimp_draw_tool_resume (GIMP_DRAW_TOOL (brush_tool));
+}
+
+static const GimpBezierDesc *
+gimp_brush_tool_get_boundary (GimpBrushTool *brush_tool,
+                              gint          *width,
+                              gint          *height)
+{
+  GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (brush_tool);
+  GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_tool->core);
+
+  if (paint_tool->draw_brush &&
+      brush_core->main_brush &&
+      brush_core->dynamics   &&
+      brush_core->scale > 0.0)
+    {
+      return gimp_brush_transform_boundary (brush_core->main_brush,
+                                            brush_core->scale,
+                                            brush_core->aspect_ratio,
+                                            brush_core->angle,
+                                            brush_core->reflect,
+                                            brush_core->hardness,
+                                            width,
+                                            height);
+    }
+
+  return NULL;
+}