C++ GIMP_TOOL函数代码示例

static void
gimp_text_tool_im_preedit_start (GtkIMContext *context,
                                 GimpTextTool *text_tool)
{
  GimpTool         *tool  = GIMP_TOOL (text_tool);
  GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
  GtkStyle         *style = gtk_widget_get_style (shell->canvas);
  GtkWidget        *frame;
  GtkWidget        *ebox;
  PangoRectangle    cursor_rect = { 0, };
  gint              off_x, off_y;

  if (text_tool->text)
    gimp_text_tool_editor_get_cursor_rect (text_tool,
                                           text_tool->overwrite_mode,
                                           &cursor_rect);

  g_object_get (text_tool, "x1", &off_x, "y1", &off_y, NULL);

  text_tool->preedit_overlay = gtk_frame_new (NULL);
  gtk_frame_set_shadow_type (GTK_FRAME (text_tool->preedit_overlay),
                             GTK_SHADOW_OUT);
  gimp_display_shell_add_overlay (shell,
                                  text_tool->preedit_overlay,
                                  cursor_rect.x + off_x,
                                  cursor_rect.y + off_y,
                                  GIMP_HANDLE_ANCHOR_NORTH_WEST, 0, 0);
  gimp_overlay_box_set_child_opacity (GIMP_OVERLAY_BOX (shell->canvas),
                                      text_tool->preedit_overlay, 0.7);
  gtk_widget_show (text_tool->preedit_overlay);

  frame = gtk_frame_new (NULL);
  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
  gtk_container_add (GTK_CONTAINER (text_tool->preedit_overlay), frame);
  gtk_widget_show (frame);

  ebox = gtk_event_box_new ();
  gtk_widget_modify_bg (ebox, GTK_STATE_NORMAL,
                        &style->base[GTK_STATE_NORMAL]);
  gtk_container_add (GTK_CONTAINER (frame), ebox);
  gtk_widget_show (ebox);

  text_tool->preedit_label = gtk_label_new (NULL);
  gtk_widget_modify_bg (text_tool->preedit_label, GTK_STATE_NORMAL,
                        &style->text[GTK_STATE_NORMAL]);
  gtk_misc_set_padding (GTK_MISC (text_tool->preedit_label), 2, 2);
  gtk_container_add (GTK_CONTAINER (ebox), text_tool->preedit_label);
  gtk_widget_show (text_tool->preedit_label);
}

static void
gimp_rotate_tool_prepare (GimpTransformTool *tr_tool)
{
  GimpRotateTool *rotate  = GIMP_ROTATE_TOOL (tr_tool);
  GimpDisplay    *display = GIMP_TOOL (tr_tool)->display;
  GimpImage      *image   = gimp_display_get_image (display);
  gdouble         xres;
  gdouble         yres;

  tr_tool->px = (gdouble) (tr_tool->x1 + tr_tool->x2) / 2.0;
  tr_tool->py = (gdouble) (tr_tool->y1 + tr_tool->y2) / 2.0;

  tr_tool->trans_info[ANGLE]      = 0.0;
  tr_tool->trans_info[REAL_ANGLE] = 0.0;
  tr_tool->trans_info[PIVOT_X]    = tr_tool->px;
  tr_tool->trans_info[PIVOT_Y]    = tr_tool->py;

  gimp_image_get_resolution (image, &xres, &yres);

  g_signal_handlers_block_by_func (rotate->sizeentry,
                                   rotate_center_changed,
                                   tr_tool);

  gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (rotate->sizeentry),
                            gimp_display_get_shell (display)->unit);

  gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (rotate->sizeentry), 0,
                                  xres, FALSE);
  gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (rotate->sizeentry), 1,
                                  yres, FALSE);

  gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (rotate->sizeentry), 0,
                                         -65536,
                                         65536 +
                                         gimp_image_get_width (image));
  gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (rotate->sizeentry), 1,
                                         -65536,
                                         65536 +
                                         gimp_image_get_height (image));

  gimp_size_entry_set_size (GIMP_SIZE_ENTRY (rotate->sizeentry), 0,
                            tr_tool->x1, tr_tool->x2);
  gimp_size_entry_set_size (GIMP_SIZE_ENTRY (rotate->sizeentry), 1,
                            tr_tool->y1, tr_tool->y2);

  g_signal_handlers_unblock_by_func (rotate->sizeentry,
                                     rotate_center_changed,
                                     tr_tool);
}

static void
gimp_warp_tool_halt (GimpWarpTool *wt)
{
  GimpTool        *tool    = GIMP_TOOL (wt);
  GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);

  if (wt->coords_buffer)
    {
      g_object_unref (wt->coords_buffer);
      wt->coords_buffer = NULL;
    }

  if (wt->graph)
    {
      g_object_unref (wt->graph);
      wt->graph       = NULL;
      wt->render_node = NULL;
    }

  if (wt->image_map)
    {
      gimp_image_map_abort (wt->image_map);
      g_object_unref (wt->image_map);
      wt->image_map = NULL;

      gimp_image_flush (gimp_display_get_image (tool->display));
    }

  if (wt->redo_stack)
    {
      g_list_free_full (wt->redo_stack, (GDestroyNotify) g_object_unref);
      wt->redo_stack = NULL;
    }

  tool->display  = NULL;
  tool->drawable = NULL;

  if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (wt)))
    gimp_draw_tool_stop (GIMP_DRAW_TOOL (wt));

  if (options->animate_button)
    {
      gtk_widget_set_sensitive (options->animate_button, FALSE);

      g_signal_handlers_disconnect_by_func (options->animate_button,
                                            gimp_warp_tool_animate,
                                            wt);
    }
}

static void
gimp_operation_tool_set_config (GimpFilterTool *filter_tool,
                                GimpConfig     *config)
{
  GimpOperationTool *op_tool = GIMP_OPERATION_TOOL (filter_tool);

  gimp_operation_tool_unlink_chains (op_tool);

  GIMP_FILTER_TOOL_CLASS (parent_class)->set_config (filter_tool, config);

  if (filter_tool->config && GIMP_TOOL (op_tool)->drawable)
    gimp_operation_tool_sync_op (op_tool, FALSE);

  gimp_operation_tool_relink_chains (op_tool);
}

static gboolean
gimp_n_point_deformation_tool_canvas_update_timeout (GimpNPointDeformationTool *npd_tool)
{
  if (! GIMP_TOOL (npd_tool)->drawable)
    return FALSE;

  gimp_npd_debug (("canvas update thread\n"));

  gimp_draw_tool_pause (GIMP_DRAW_TOOL(npd_tool));
  gimp_draw_tool_resume (GIMP_DRAW_TOOL(npd_tool));

  gimp_npd_debug (("canvas update thread stop\n"));

  return TRUE;
}

static void
gimp_scale_tool_init (GimpScaleTool *scale_tool)
{
  GimpTool          *tool    = GIMP_TOOL (scale_tool);
  GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (scale_tool);

  gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_RESIZE);

  tr_tool->progress_text      = _("Scaling");

  tr_tool->use_grid           = TRUE;
  tr_tool->use_corner_handles = TRUE;
  tr_tool->use_side_handles   = TRUE;
  tr_tool->use_center_handle  = TRUE;
}

static void
gimp_blend_tool_commit (GimpBlendTool *blend_tool)
{
  GimpTool *tool = GIMP_TOOL (blend_tool);

  if (blend_tool->filter)
    {
      gimp_drawable_filter_commit (blend_tool->filter,
                                   GIMP_PROGRESS (tool), FALSE);
      g_object_unref (blend_tool->filter);
      blend_tool->filter = NULL;

      gimp_image_flush (gimp_display_get_image (tool->display));
    }
}

static void
gimp_text_tool_editor_dialog (GimpTextTool *text_tool)
{
  GimpTool          *tool    = GIMP_TOOL (text_tool);
  GimpTextOptions   *options = GIMP_TEXT_TOOL_GET_OPTIONS (text_tool);
  GimpDialogFactory *dialog_factory;
  GtkWindow         *parent  = NULL;
  gdouble            xres    = 1.0;
  gdouble            yres    = 1.0;

  if (text_tool->editor_dialog)
    {
      gtk_window_present (GTK_WINDOW (text_tool->editor_dialog));
      return;
    }

  dialog_factory = gimp_dialog_factory_get_singleton ();

  if (tool->display)
    {
      GimpDisplayShell *shell = gimp_display_get_shell (tool->display);

      parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (shell)));
    }

  if (text_tool->image)
    gimp_image_get_resolution (text_tool->image, &xres, &yres);

  text_tool->editor_dialog =
    gimp_text_options_editor_new (parent, tool->tool_info->gimp, options,
                                  gimp_dialog_factory_get_menu_factory (dialog_factory),
                                  _("GIMP Text Editor"),
                                  text_tool->proxy, text_tool->buffer,
                                  xres, yres);

  g_object_add_weak_pointer (G_OBJECT (text_tool->editor_dialog),
                             (gpointer) &text_tool->editor_dialog);

  gimp_dialog_factory_add_foreign (dialog_factory,
                                   "gimp-text-tool-dialog",
                                   text_tool->editor_dialog);

  g_signal_connect (text_tool->editor_dialog, "destroy",
                    G_CALLBACK (gimp_text_tool_editor_destroy),
                    text_tool);

  gtk_widget_show (text_tool->editor_dialog);
}

static void
gimp_color_tool_draw (GimpDrawTool *draw_tool)
{
  GimpColorTool *color_tool = GIMP_COLOR_TOOL (draw_tool);

  if (color_tool->enabled)
    {
      if (color_tool->sample_point)
        {
          GimpImage      *image = gimp_display_get_image (draw_tool->display);
          GimpCanvasItem *item;
          gint            index;
          gint            x;
          gint            y;

          gimp_sample_point_get_position (color_tool->sample_point, &x, &y);

          index = g_list_index (gimp_image_get_sample_points (image),
                                color_tool->sample_point) + 1;

          item = gimp_draw_tool_add_sample_point (draw_tool, x, y, index);
          gimp_canvas_item_set_highlight (item, TRUE);
        }

      if (color_tool->moving_sample_point)
        {
          if (color_tool->sample_point_x != SAMPLE_POINT_POSITION_INVALID &&
              color_tool->sample_point_y != SAMPLE_POINT_POSITION_INVALID)
            {
              gimp_draw_tool_add_crosshair (draw_tool,
                                            color_tool->sample_point_x,
                                            color_tool->sample_point_y);
            }
        }
      else if (color_tool->options->sample_average &&
               gimp_tool_control_is_active (GIMP_TOOL (draw_tool)->control))
        {
          gdouble radius = color_tool->options->average_radius;

          gimp_draw_tool_add_rectangle (draw_tool,
                                        FALSE,
                                        color_tool->center_x - radius,
                                        color_tool->center_y - radius,
                                        2 * radius + 1,
                                        2 * radius + 1);
        }
    }
}

void
gimp_warp_tool_button_release (GimpTool              *tool,
                               const GimpCoords      *coords,
                               guint32                time,
                               GdkModifierType        state,
                               GimpButtonReleaseType  release_type,
                               GimpDisplay           *display)
{
  GimpWarpTool *wt = GIMP_WARP_TOOL (tool);

  gimp_draw_tool_pause (GIMP_DRAW_TOOL (wt));

  gimp_tool_control_halt (tool->control);

  g_source_remove (wt->stroke_timer);
  wt->stroke_timer = 0;

  g_signal_handlers_disconnect_by_func (wt->current_stroke,
                                        gimp_warp_tool_stroke_changed,
                                        wt);

#ifdef WARP_DEBUG
  g_printerr ("%s\n", gegl_path_to_string (wt->current_stroke));
#endif

  g_object_unref (wt->current_stroke);
  wt->current_stroke = NULL;

  if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
    {
      gimp_warp_tool_undo (tool, display);

      /*  the just undone stroke has no business on the redo stack  */
      g_object_unref (wt->redo_stack->data);
      wt->redo_stack = g_list_remove_link (wt->redo_stack, wt->redo_stack);
    }
  else if (wt->redo_stack)
    {
      /*  the redo stack becomes invalid by actually doing a stroke  */
      g_list_free_full (wt->redo_stack, (GDestroyNotify) g_object_unref);
      wt->redo_stack = NULL;
    }

  gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));

  /*  update the undo actions / menu items  */
  gimp_image_flush (gimp_display_get_image (GIMP_TOOL (wt)->display));
}

static void
gimp_blend_tool_update_graph (GimpBlendTool *blend_tool)
{
  GimpTool *tool = GIMP_TOOL (blend_tool);
  gint      off_x, off_y;

  gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);

#if 0
  if (gimp_blend_tool_is_shapeburst (blend_tool))
    {
      gfloat start, end;

      gegl_buffer_get (blend_tool->dist_buffer,
                       GEGL_RECTANGLE (blend_tool->start_x - off_x,
                                       blend_tool->start_y - off_y,
                                       1, 1),
                       1.0, babl_format("Y float"), &start,
                       GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);

      gegl_buffer_get (blend_tool->dist_buffer,
                       GEGL_RECTANGLE (blend_tool->end_x - off_x,
                                       blend_tool->end_y - off_y,
                                       1, 1),
                       1.0, babl_format("Y float"), &end,
                       GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);

      if (start != end)
        {
          gegl_node_set (blend_tool->subtract_node,
                         "value", (gdouble) start,
                         NULL);
          gegl_node_set (blend_tool->divide_node,
                         "value", (gdouble) (end - start),
                         NULL);
        }
    }
  else
#endif
    {
      gegl_node_set (blend_tool->render_node,
                     "start_x", blend_tool->start_x - off_x,
                     "start_y", blend_tool->start_y - off_y,
                     "end_x",   blend_tool->end_x - off_x,
                     "end_y",   blend_tool->end_y - off_y,
                     NULL);
    }
}

static void
gimp_cage_tool_commit (GimpCageTool *ct)
{
  GimpTool *tool = GIMP_TOOL (ct);

  gimp_tool_control_push_preserve (tool->control, TRUE);

  gimp_image_map_commit (ct->image_map,
                         GIMP_PROGRESS (tool));
  g_object_unref (ct->image_map);
  ct->image_map = NULL;

  gimp_tool_control_pop_preserve (tool->control);

  gimp_image_flush (gimp_display_get_image (tool->display));
}

static void
gimp_tool_progress_end (GimpProgress *progress)
{
  GimpTool *tool = GIMP_TOOL (progress);

  if (tool->progress)
    {
      GimpDisplayShell *shell = gimp_display_get_shell (tool->progress_display);

      gimp_progress_end (GIMP_PROGRESS (tool->progress));
      gimp_display_shell_remove_item (shell, tool->progress);

      tool->progress         = NULL;
      tool->progress_display = NULL;
    }
}

static void
gimp_seamless_clone_tool_init (GimpSeamlessCloneTool *self)
{
  GimpTool *tool = GIMP_TOOL (self);

  gimp_tool_control_set_dirty_mask  (tool->control,
                                     GIMP_DIRTY_IMAGE           |
                                     GIMP_DIRTY_IMAGE_STRUCTURE |
                                     GIMP_DIRTY_DRAWABLE        |
                                     GIMP_DIRTY_SELECTION);

  gimp_tool_control_set_tool_cursor (tool->control,
                                     GIMP_TOOL_CURSOR_MOVE);

  self->tool_state = SC_STATE_INIT;
}

static void
gimp_region_select_tool_draw (GimpDrawTool *draw_tool)
{
  GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (draw_tool);

  if (region_sel->segs)
    {
      GimpDisplayShell *shell;

      shell = GIMP_DISPLAY_SHELL (GIMP_TOOL (draw_tool)->display->shell);

      gimp_canvas_draw_segments (GIMP_CANVAS (shell->canvas),
                                 GIMP_CANVAS_STYLE_XOR,
                                 region_sel->segs, region_sel->num_segs);
    }
}