Adding upstream version 2.10.34.upstream/2.10.34upstream

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

1 files changed, 474 insertions, 0 deletions

diff --git a/app/tools/gimpscaletool.c b/app/tools/gimpscaletool.c
new file mode 100644
index 0000000..b7fcd96
--- /dev/null
+++ b/app/tools/gimpscaletool.c
@@ -0,0 +1,474 @@
+/* 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 "libgimpwidgets/gimpwidgets.h"
+
+#include "tools-types.h"
+
+#include "core/gimp-transform-utils.h"
+#include "core/gimpimage.h"
+
+#include "widgets/gimphelp-ids.h"
+#include "widgets/gimpsizebox.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+#include "display/gimpdisplayshell-transform.h"
+#include "display/gimptoolgui.h"
+#include "display/gimptooltransformgrid.h"
+
+#include "gimpscaletool.h"
+#include "gimptoolcontrol.h"
+#include "gimptransformgridoptions.h"
+
+#include "gimp-intl.h"
+
+
+#define EPSILON 1e-6
+
+
+/*  index into trans_info array  */
+enum
+{
+  X0,
+  Y0,
+  X1,
+  Y1
+};
+
+
+/*  local function prototypes  */
+
+static gboolean         gimp_scale_tool_info_to_matrix (GimpTransformGridTool *tg_tool,
+                                                        GimpMatrix3           *transform);
+static void             gimp_scale_tool_matrix_to_info (GimpTransformGridTool *tg_tool,
+                                                        const GimpMatrix3     *transform);
+static gchar          * gimp_scale_tool_get_undo_desc  (GimpTransformGridTool *tg_tool);
+static void             gimp_scale_tool_dialog         (GimpTransformGridTool *tg_tool);
+static void             gimp_scale_tool_dialog_update  (GimpTransformGridTool *tg_tool);
+static void             gimp_scale_tool_prepare        (GimpTransformGridTool *tg_tool);
+static void             gimp_scale_tool_readjust       (GimpTransformGridTool *tg_tool);
+static GimpToolWidget * gimp_scale_tool_get_widget     (GimpTransformGridTool *tg_tool);
+static void             gimp_scale_tool_update_widget  (GimpTransformGridTool *tg_tool);
+static void             gimp_scale_tool_widget_changed (GimpTransformGridTool *tg_tool);
+
+static void             gimp_scale_tool_size_notify    (GtkWidget             *box,
+                                                        GParamSpec            *pspec,
+                                                        GimpTransformGridTool *tg_tool);
+
+
+G_DEFINE_TYPE (GimpScaleTool, gimp_scale_tool, GIMP_TYPE_TRANSFORM_GRID_TOOL)
+
+#define parent_class gimp_scale_tool_parent_class
+
+
+void
+gimp_scale_tool_register (GimpToolRegisterCallback  callback,
+                          gpointer                  data)
+{
+  (* callback) (GIMP_TYPE_SCALE_TOOL,
+                GIMP_TYPE_TRANSFORM_GRID_OPTIONS,
+                gimp_transform_grid_options_gui,
+                GIMP_CONTEXT_PROP_MASK_BACKGROUND,
+                "gimp-scale-tool",
+                _("Scale"),
+                _("Scale Tool: Scale the layer, selection or path"),
+                N_("_Scale"), "<shift>S",
+                NULL, GIMP_HELP_TOOL_SCALE,
+                GIMP_ICON_TOOL_SCALE,
+                data);
+}
+
+static void
+gimp_scale_tool_class_init (GimpScaleToolClass *klass)
+{
+  GimpTransformToolClass     *tr_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
+  GimpTransformGridToolClass *tg_class = GIMP_TRANSFORM_GRID_TOOL_CLASS (klass);
+
+  tg_class->info_to_matrix  = gimp_scale_tool_info_to_matrix;
+  tg_class->matrix_to_info  = gimp_scale_tool_matrix_to_info;
+  tg_class->get_undo_desc   = gimp_scale_tool_get_undo_desc;
+  tg_class->dialog          = gimp_scale_tool_dialog;
+  tg_class->dialog_update   = gimp_scale_tool_dialog_update;
+  tg_class->prepare         = gimp_scale_tool_prepare;
+  tg_class->readjust        = gimp_scale_tool_readjust;
+  tg_class->get_widget      = gimp_scale_tool_get_widget;
+  tg_class->update_widget   = gimp_scale_tool_update_widget;
+  tg_class->widget_changed  = gimp_scale_tool_widget_changed;
+
+  tr_class->undo_desc       = C_("undo-type", "Scale");
+  tr_class->progress_text   = _("Scaling");
+  tg_class->ok_button_label = _("_Scale");
+}
+
+static void
+gimp_scale_tool_init (GimpScaleTool *scale_tool)
+{
+  GimpTool *tool  = GIMP_TOOL (scale_tool);
+
+  gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_RESIZE);
+}
+
+static gboolean
+gimp_scale_tool_info_to_matrix  (GimpTransformGridTool *tg_tool,
+                                 GimpMatrix3           *transform)
+{
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+
+  gimp_matrix3_identity (transform);
+  gimp_transform_matrix_scale (transform,
+                               tr_tool->x1,
+                               tr_tool->y1,
+                               tr_tool->x2 - tr_tool->x1,
+                               tr_tool->y2 - tr_tool->y1,
+                               tg_tool->trans_info[X0],
+                               tg_tool->trans_info[Y0],
+                               tg_tool->trans_info[X1] - tg_tool->trans_info[X0],
+                               tg_tool->trans_info[Y1] - tg_tool->trans_info[Y0]);
+
+  return TRUE;
+}
+
+static void
+gimp_scale_tool_matrix_to_info  (GimpTransformGridTool *tg_tool,
+                                 const GimpMatrix3     *transform)
+{
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+  gdouble            x;
+  gdouble            y;
+  gdouble            w;
+  gdouble            h;
+
+  x = transform->coeff[0][2];
+  y = transform->coeff[1][2];
+  w = transform->coeff[0][0];
+  h = transform->coeff[1][1];
+
+  tg_tool->trans_info[X0] = x + w * tr_tool->x1;
+  tg_tool->trans_info[Y0] = y + h * tr_tool->y1;
+  tg_tool->trans_info[X1] = tg_tool->trans_info[X0] +
+                            w * (tr_tool->x2 - tr_tool->x1);
+  tg_tool->trans_info[Y1] = tg_tool->trans_info[Y0] +
+                            h * (tr_tool->y2 - tr_tool->y1);
+}
+
+static gchar *
+gimp_scale_tool_get_undo_desc (GimpTransformGridTool *tg_tool)
+{
+  gint width;
+  gint height;
+
+  width  = ROUND (tg_tool->trans_info[X1] - tg_tool->trans_info[X0]);
+  height = ROUND (tg_tool->trans_info[Y1] - tg_tool->trans_info[Y0]);
+
+  return g_strdup_printf (C_("undo-type", "Scale to %d x %d"),
+                          width, height);
+}
+
+static void
+gimp_scale_tool_dialog (GimpTransformGridTool *tg_tool)
+{
+}
+
+static void
+gimp_scale_tool_dialog_update (GimpTransformGridTool *tg_tool)
+{
+  GimpTransformGridOptions *options = GIMP_TRANSFORM_GRID_TOOL_GET_OPTIONS (tg_tool);
+  gint                      width;
+  gint                      height;
+
+  width  = ROUND (tg_tool->trans_info[X1] - tg_tool->trans_info[X0]);
+  height = ROUND (tg_tool->trans_info[Y1] - tg_tool->trans_info[Y0]);
+
+  g_object_set (GIMP_SCALE_TOOL (tg_tool)->box,
+                "width",       width,
+                "height",      height,
+                "keep-aspect", options->constrain_scale,
+                NULL);
+}
+
+static void
+gimp_scale_tool_prepare (GimpTransformGridTool *tg_tool)
+{
+  GimpScaleTool            *scale   = GIMP_SCALE_TOOL (tg_tool);
+  GimpTransformTool        *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+  GimpTransformGridOptions *options = GIMP_TRANSFORM_GRID_TOOL_GET_OPTIONS (tg_tool);
+  GimpDisplay              *display = GIMP_TOOL (tg_tool)->display;
+  gdouble                   xres;
+  gdouble                   yres;
+
+  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->y2;
+
+  gimp_image_get_resolution (gimp_display_get_image (display),
+                             &xres, &yres);
+
+  if (scale->box)
+    {
+      g_signal_handlers_disconnect_by_func (scale->box,
+                                            gimp_scale_tool_size_notify,
+                                            tg_tool);
+      gtk_widget_destroy (scale->box);
+    }
+
+  /*  Need to create a new GimpSizeBox widget because the initial
+   *  width and height is what counts as 100%.
+   */
+  scale->box =
+    g_object_new (GIMP_TYPE_SIZE_BOX,
+                  "width",       tr_tool->x2 - tr_tool->x1,
+                  "height",      tr_tool->y2 - tr_tool->y1,
+                  "keep-aspect", options->constrain_scale,
+                  "unit",        gimp_display_get_shell (display)->unit,
+                  "xresolution", xres,
+                  "yresolution", yres,
+                  NULL);
+
+  gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (tg_tool->gui)),
+                      scale->box, FALSE, FALSE, 0);
+  gtk_widget_show (scale->box);
+
+  g_signal_connect (scale->box, "notify",
+                    G_CALLBACK (gimp_scale_tool_size_notify),
+                    tg_tool);
+}
+
+static void
+gimp_scale_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, y,
+                                       &x, &y);
+
+  tg_tool->trans_info[X0] = RINT (x - FUNSCALEX (shell, r));
+  tg_tool->trans_info[Y0] = RINT (y - FUNSCALEY (shell, r));
+  tg_tool->trans_info[X1] = RINT (x + FUNSCALEX (shell, r));
+  tg_tool->trans_info[Y1] = RINT (y + FUNSCALEY (shell, r));
+}
+
+static GimpToolWidget *
+gimp_scale_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_SCALE,
+                "outside-function",   GIMP_TRANSFORM_FUNCTION_SCALE,
+                "use-corner-handles", TRUE,
+                "use-side-handles",   TRUE,
+                "use-center-handle",  TRUE,
+                NULL);
+
+  return widget;
+}
+
+static void
+gimp_scale_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_scale_tool_widget_changed (GimpTransformGridTool *tg_tool)
+{
+  GimpTool          *tool    = GIMP_TOOL (tg_tool);
+  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+  GimpMatrix3       *transform;
+  gdouble            x0, y0;
+  gdouble            x1, y1;
+  gint               width, height;
+
+  g_object_get (tg_tool->widget,
+                "transform", &transform,
+                NULL);
+
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x1, tr_tool->y1,
+                                &x0,         &y0);
+  gimp_matrix3_transform_point (transform,
+                                tr_tool->x2, tr_tool->y2,
+                                &x1,         &y1);
+
+  g_free (transform);
+
+  width  = ROUND (x1 - x0);
+  height = ROUND (y1 - y0);
+
+  if (width > 0)
+    {
+      tg_tool->trans_info[X0] = x0;
+      tg_tool->trans_info[X1] = x1;
+    }
+  else if (fabs (x0 - tg_tool->trans_info[X0]) < EPSILON)
+    {
+      tg_tool->trans_info[X1] = tg_tool->trans_info[X0] + 1.0;
+    }
+  else if (fabs (x1 - tg_tool->trans_info[X1]) < EPSILON)
+    {
+      tg_tool->trans_info[X0] = tg_tool->trans_info[X1] - 1.0;
+    }
+  else
+    {
+      tg_tool->trans_info[X0] = (x0 + x1) / 2.0 - 0.5;
+      tg_tool->trans_info[X1] = (x0 + x1) / 2.0 + 0.5;
+    }
+
+  if (height > 0)
+    {
+      tg_tool->trans_info[Y0] = y0;
+      tg_tool->trans_info[Y1] = y1;
+    }
+  else if (fabs (y0 - tg_tool->trans_info[Y0]) < EPSILON)
+    {
+      tg_tool->trans_info[Y1] = tg_tool->trans_info[Y0] + 1.0;
+    }
+  else if (fabs (y1 - tg_tool->trans_info[Y1]) < EPSILON)
+    {
+      tg_tool->trans_info[Y0] = tg_tool->trans_info[Y1] - 1.0;
+    }
+  else
+    {
+      tg_tool->trans_info[Y0] = (y0 + y1) / 2.0 - 0.5;
+      tg_tool->trans_info[Y1] = (y0 + y1) / 2.0 + 0.5;
+    }
+
+  if (width <= 0 || height <= 0)
+    gimp_transform_tool_recalc_matrix (tr_tool, tool->display);
+
+  GIMP_TRANSFORM_GRID_TOOL_CLASS (parent_class)->widget_changed (tg_tool);
+}
+
+static void
+gimp_scale_tool_size_notify (GtkWidget             *box,
+                             GParamSpec            *pspec,
+                             GimpTransformGridTool *tg_tool)
+{
+  GimpTransformGridOptions *options = GIMP_TRANSFORM_GRID_TOOL_GET_OPTIONS (tg_tool);
+
+  if (! strcmp (pspec->name, "width") ||
+      ! strcmp (pspec->name, "height"))
+    {
+      gint width;
+      gint height;
+      gint old_width;
+      gint old_height;
+
+      g_object_get (box,
+                    "width",  &width,
+                    "height", &height,
+                    NULL);
+
+      old_width  = ROUND (tg_tool->trans_info[X1] - tg_tool->trans_info[X0]);
+      old_height = ROUND (tg_tool->trans_info[Y1] - tg_tool->trans_info[Y0]);
+
+      if ((width != old_width) || (height != old_height))
+        {
+          GimpTool          *tool    = GIMP_TOOL (tg_tool);
+          GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tg_tool);
+
+          if (options->frompivot_scale)
+            {
+              gdouble center_x;
+              gdouble center_y;
+
+              center_x = (tg_tool->trans_info[X0] +
+                          tg_tool->trans_info[X1]) / 2.0;
+              center_y = (tg_tool->trans_info[Y0] +
+                          tg_tool->trans_info[Y1]) / 2.0;
+
+              tg_tool->trans_info[X0] = center_x - width  / 2.0;
+              tg_tool->trans_info[Y0] = center_y - height / 2.0;
+              tg_tool->trans_info[X1] = center_x + width  / 2.0;
+              tg_tool->trans_info[Y1] = center_y + height / 2.0;
+            }
+          else
+            {
+              tg_tool->trans_info[X1] = tg_tool->trans_info[X0] + width;
+              tg_tool->trans_info[Y1] = tg_tool->trans_info[Y0] + height;
+            }
+
+          gimp_transform_grid_tool_push_internal_undo (tg_tool, TRUE);
+
+          gimp_transform_tool_recalc_matrix (tr_tool, tool->display);
+        }
+    }
+  else if (! strcmp (pspec->name, "keep-aspect"))
+    {
+      gboolean constrain;
+
+      g_object_get (box,
+                    "keep-aspect", &constrain,
+                    NULL);
+
+      if (constrain != options->constrain_scale)
+        {
+          gint width;
+          gint height;
+
+          g_object_get (box,
+                        "width",  &width,
+                        "height", &height,
+                        NULL);
+
+          g_object_set (options,
+                        "constrain-scale", constrain,
+                        NULL);
+        }
+    }
+}