Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 292 insertions, 0 deletions

diff --git a/app/tools/gimpperspectivetool.c b/app/tools/gimpperspectivetool.c
new file mode 100644
index 0000000..c6f7a5d
--- /dev/null
+++ b/app/tools/gimpperspectivetool.c
@@ -0,0 +1,292 @@
+/* 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 "widgets/gimphelp-ids.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+#include "display/gimpdisplayshell-transform.h"
+#include "display/gimptoolgui.h"
+#include "display/gimptooltransformgrid.h"
+
+#include "gimpperspectivetool.h"
+#include "gimptoolcontrol.h"
+#include "gimptransformgridoptions.h"
+
+#include "gimp-intl.h"
+
+
+/*  index into trans_info array  */
+enum
+{
+  X0,
+  Y0,
+  X1,
+  Y1,
+  X2,
+  Y2,
+  X3,
+  Y3
+};
+
+
+/*  local function prototypes  */
+
+static void             gimp_perspective_tool_matrix_to_info (GimpTransformGridTool    *tg_tool,
+                                                              const GimpMatrix3        *transform);
+static void             gimp_perspective_tool_prepare        (GimpTransformGridTool    *tg_tool);
+static void             gimp_perspective_tool_readjust       (GimpTransformGridTool    *tg_tool);
+static GimpToolWidget * gimp_perspective_tool_get_widget     (GimpTransformGridTool    *tg_tool);
+static void             gimp_perspective_tool_update_widget  (GimpTransformGridTool    *tg_tool);
+static void             gimp_perspective_tool_widget_changed (GimpTransformGridTool    *tg_tool);
+
+static void             gimp_perspective_tool_info_to_points (GimpGenericTransformTool *generic);
+
+
+G_DEFINE_TYPE (GimpPerspectiveTool, gimp_perspective_tool,
+               GIMP_TYPE_GENERIC_TRANSFORM_TOOL)
+
+#define parent_class gimp_perspective_tool_parent_class
+
+
+void
+gimp_perspective_tool_register (GimpToolRegisterCallback  callback,
+                                gpointer                  data)
+{
+  (* callback) (GIMP_TYPE_PERSPECTIVE_TOOL,
+                GIMP_TYPE_TRANSFORM_GRID_OPTIONS,
+                gimp_transform_grid_options_gui,
+                GIMP_CONTEXT_PROP_MASK_BACKGROUND,
+                "gimp-perspective-tool",
+                _("Perspective"),
+                _("Perspective Tool: "
+                  "Change perspective of the layer, selection or path"),
+                N_("_Perspective"), "<shift>P",
+                NULL, GIMP_HELP_TOOL_PERSPECTIVE,
+                GIMP_ICON_TOOL_PERSPECTIVE,
+                data);
+}
+
+static void
+gimp_perspective_tool_class_init (GimpPerspectiveToolClass *klass)
+{
+  GimpTransformToolClass        *tr_class      = GIMP_TRANSFORM_TOOL_CLASS (klass);
+  GimpTransformGridToolClass    *tg_class      = GIMP_TRANSFORM_GRID_TOOL_CLASS (klass);
+  GimpGenericTransformToolClass *generic_class = GIMP_GENERIC_TRANSFORM_TOOL_CLASS (klass);
+
+  tg_class->matrix_to_info      = gimp_perspective_tool_matrix_to_info;
+  tg_class->prepare             = gimp_perspective_tool_prepare;
+  tg_class->readjust            = gimp_perspective_tool_readjust;
+  tg_class->get_widget          = gimp_perspective_tool_get_widget;
+  tg_class->update_widget       = gimp_perspective_tool_update_widget;
+  tg_class->widget_changed      = gimp_perspective_tool_widget_changed;
+
+  generic_class->info_to_points = gimp_perspective_tool_info_to_points;
+
+  tr_class->undo_desc           = C_("undo-type", "Perspective");
+  tr_class->progress_text       = _("Perspective transformation");
+}
+
+static void
+gimp_perspective_tool_init (GimpPerspectiveTool *perspective_tool)
+{
+  GimpTool *tool = GIMP_TOOL (perspective_tool);
+
+  gimp_tool_control_set_tool_cursor (tool->control,
+                                     GIMP_TOOL_CURSOR_PERSPECTIVE);
+}
+
+static void
+gimp_perspective_tool_matrix_to_info (GimpTransformGridTool *tg_tool,
+                                      const GimpMatrix3     *transform)
+{
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x1,
+                                tr_tool->y1,
+                                &tg_tool->trans_info[X0],
+                                &tg_tool->trans_info[Y0]);
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x2,
+                                tr_tool->y1,
+                                &tg_tool->trans_info[X1],
+                                &tg_tool->trans_info[Y1]);
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x1,
+                                tr_tool->y2,
+                                &tg_tool->trans_info[X2],
+                                &tg_tool->trans_info[Y2]);
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x2,
+                                tr_tool->y2,
+                                &tg_tool->trans_info[X3],
+                                &tg_tool->trans_info[Y3]);
+}
+
+static void
+gimp_perspective_tool_prepare (GimpTransformGridTool *tg_tool)
+{
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+
+  GIMP_TRANSFORM_GRID_TOOL_CLASS (parent_class)->prepare (tg_tool);
+
+  tg_tool->trans_info[X0] = (gdouble) tr_tool->x1;
+  tg_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
+  tg_tool->trans_info[X1] = (gdouble) tr_tool->x2;
+  tg_tool->trans_info[Y1] = (gdouble) tr_tool->y1;
+  tg_tool->trans_info[X2] = (gdouble) tr_tool->x1;
+  tg_tool->trans_info[Y2] = (gdouble) tr_tool->y2;
+  tg_tool->trans_info[X3] = (gdouble) tr_tool->x2;
+  tg_tool->trans_info[Y3] = (gdouble) tr_tool->y2;
+}
+
+static void
+gimp_perspective_tool_readjust (GimpTransformGridTool *tg_tool)
+{
+  GimpTool         *tool  = GIMP_TOOL (tg_tool);
+  GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
+  gdouble           x;
+  gdouble           y;
+  gdouble           r;
+
+  x = shell->disp_width  / 2.0;
+  y = shell->disp_height / 2.0;
+  r = MAX (MIN (x, y) / G_SQRT2 -
+           GIMP_TOOL_TRANSFORM_GRID_MAX_HANDLE_SIZE / 2.0,
+           GIMP_TOOL_TRANSFORM_GRID_MAX_HANDLE_SIZE / 2.0);
+
+  gimp_display_shell_untransform_xy_f (shell,
+                                       x - r, y - r,
+                                       &tg_tool->trans_info[X0],
+                                       &tg_tool->trans_info[Y0]);
+  gimp_display_shell_untransform_xy_f (shell,
+                                       x + r, y - r,
+                                       &tg_tool->trans_info[X1],
+                                       &tg_tool->trans_info[Y1]);
+  gimp_display_shell_untransform_xy_f (shell,
+                                       x - r, y + r,
+                                       &tg_tool->trans_info[X2],
+                                       &tg_tool->trans_info[Y2]);
+  gimp_display_shell_untransform_xy_f (shell,
+                                       x + r, y + r,
+                                       &tg_tool->trans_info[X3],
+                                       &tg_tool->trans_info[Y3]);
+}
+
+static GimpToolWidget *
+gimp_perspective_tool_get_widget (GimpTransformGridTool *tg_tool)
+{
+  GimpTool          *tool    = GIMP_TOOL (tg_tool);
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+  GimpDisplayShell  *shell   = gimp_display_get_shell (tool->display);
+  GimpToolWidget    *widget;
+
+  widget = gimp_tool_transform_grid_new (shell,
+                                         &tr_tool->transform,
+                                         tr_tool->x1,
+                                         tr_tool->y1,
+                                         tr_tool->x2,
+                                         tr_tool->y2);
+
+  g_object_set (widget,
+                "inside-function",         GIMP_TRANSFORM_FUNCTION_PERSPECTIVE,
+                "outside-function",        GIMP_TRANSFORM_FUNCTION_PERSPECTIVE,
+                "use-perspective-handles", TRUE,
+                "use-center-handle",       TRUE,
+                NULL);
+
+  return widget;
+}
+
+static void
+gimp_perspective_tool_update_widget (GimpTransformGridTool *tg_tool)
+{
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+
+  GIMP_TRANSFORM_GRID_TOOL_CLASS (parent_class)->update_widget (tg_tool);
+
+  g_object_set (tg_tool->widget,
+                "x1", (gdouble) tr_tool->x1,
+                "y1", (gdouble) tr_tool->y1,
+                "x2", (gdouble) tr_tool->x2,
+                "y2", (gdouble) tr_tool->y2,
+                NULL);
+}
+
+static void
+gimp_perspective_tool_widget_changed (GimpTransformGridTool *tg_tool)
+{
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+  GimpMatrix3       *transform;
+
+  g_object_get (tg_tool->widget,
+                "transform", &transform,
+                NULL);
+
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x1, tr_tool->y1,
+                                &tg_tool->trans_info[X0],
+                                &tg_tool->trans_info[Y0]);
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x2, tr_tool->y1,
+                                &tg_tool->trans_info[X1],
+                                &tg_tool->trans_info[Y1]);
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x1, tr_tool->y2,
+                                &tg_tool->trans_info[X2],
+                                &tg_tool->trans_info[Y2]);
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x2, tr_tool->y2,
+                                &tg_tool->trans_info[X3],
+                                &tg_tool->trans_info[Y3]);
+
+  g_free (transform);
+
+  GIMP_TRANSFORM_GRID_TOOL_CLASS (parent_class)->widget_changed (tg_tool);
+}
+
+static void
+gimp_perspective_tool_info_to_points (GimpGenericTransformTool *generic)
+{
+  GimpTransformTool     *tr_tool = GIMP_TRANSFORM_TOOL (generic);
+  GimpTransformGridTool *tg_tool = GIMP_TRANSFORM_GRID_TOOL (generic);
+
+  generic->input_points[0]  = (GimpVector2) {tr_tool->x1, tr_tool->y1};
+  generic->input_points[1]  = (GimpVector2) {tr_tool->x2, tr_tool->y1};
+  generic->input_points[2]  = (GimpVector2) {tr_tool->x1, tr_tool->y2};
+  generic->input_points[3]  = (GimpVector2) {tr_tool->x2, tr_tool->y2};
+
+  generic->output_points[0] = (GimpVector2) {tg_tool->trans_info[X0],
+                                             tg_tool->trans_info[Y0]};
+  generic->output_points[1] = (GimpVector2) {tg_tool->trans_info[X1],
+                                             tg_tool->trans_info[Y1]};
+  generic->output_points[2] = (GimpVector2) {tg_tool->trans_info[X2],
+                                             tg_tool->trans_info[Y2]};
+  generic->output_points[3] = (GimpVector2) {tg_tool->trans_info[X3],
+                                             tg_tool->trans_info[Y3]};
+}