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| -rw-r--r-- | app/tools/gimpseamlessclonetool.c | 845 |
1 files changed, 845 insertions, 0 deletions
diff --git a/app/tools/gimpseamlessclonetool.c b/app/tools/gimpseamlessclonetool.c new file mode 100644 index 0000000..79a9780 --- /dev/null +++ b/app/tools/gimpseamlessclonetool.c @@ -0,0 +1,845 @@ +/* GIMP - The GNU Image Manipulation Program + * + * gimpseamlessclonetool.c + * Copyright (C) 2011 Barak Itkin <lightningismyname@gmail.com> + * + * 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 <gegl-plugin.h> /* gegl_operation_invalidate() */ +#include <gtk/gtk.h> +#include <gdk/gdkkeysyms.h> + +#include "libgimpbase/gimpbase.h" +#include "libgimpwidgets/gimpwidgets.h" + +#include "tools-types.h" + +#include "config/gimpguiconfig.h" /* playground */ + +#include "gegl/gimp-gegl-utils.h" + +#include "core/gimp.h" +#include "core/gimpbuffer.h" +#include "core/gimpdrawablefilter.h" +#include "core/gimpimage.h" +#include "core/gimpitem.h" +#include "core/gimpprogress.h" +#include "core/gimpprojection.h" +#include "core/gimptoolinfo.h" + +#include "widgets/gimphelp-ids.h" +#include "widgets/gimpclipboard.h" + +#include "display/gimpdisplay.h" +#include "display/gimpdisplayshell.h" +#include "display/gimpdisplayshell-transform.h" + +#include "gimpseamlessclonetool.h" +#include "gimpseamlesscloneoptions.h" +#include "gimptoolcontrol.h" + +#include "gimp-intl.h" + + +#define SC_DEBUG TRUE + +#ifdef SC_DEBUG +#define sc_debug_fstart() g_debug ("%s::start", __FUNCTION__); +#define sc_debug_fend() g_debug ("%s::end", __FUNCTION__); +#else +#define sc_debug_fstart() +#define sc_debug_fend() +#endif + +#define gimp_seamless_clone_tool_is_in_paste(sc,x0,y0) \ + ( ((sc)->xoff <= (x0) && (x0) < (sc)->xoff + (sc)->width) \ + && ((sc)->yoff <= (y0) && (y0) < (sc)->yoff + (sc)->height)) \ + +#define gimp_seamless_clone_tool_is_in_paste_c(sc,coords) \ + gimp_seamless_clone_tool_is_in_paste((sc),(coords)->x,(coords)->y) + + +/* init ----------> preprocess + * | | + * | | + * | | + * | v + * | render(wait, motion) + * | / | + * | _____/ | + * | _____/ | + * v v v + * quit <---------- commit + * + * Begin at INIT state + * + * INIT: Wait for click on canvas + * have a paste ? -> PREPROCESS : -> QUIT + * + * PREPROCESS: Do the preprocessing + * -> RENDER + * + * RENDER: Interact and wait for quit signal + * commit quit ? -> COMMIT : -> QUIT + * + * COMMIT: Commit the changes + * -> QUIT + * + * QUIT: Invoked by sending a ACTION_HALT to the tool_control + * Free resources + */ +enum +{ + SC_STATE_INIT, + SC_STATE_PREPROCESS, + SC_STATE_RENDER_WAIT, + SC_STATE_RENDER_MOTION, + SC_STATE_COMMIT, + SC_STATE_QUIT +}; + + +static void gimp_seamless_clone_tool_control (GimpTool *tool, + GimpToolAction action, + GimpDisplay *display); +static void gimp_seamless_clone_tool_button_press (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonPressType press_type, + GimpDisplay *display); + +static void gimp_seamless_clone_tool_button_release (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonReleaseType release_type, + GimpDisplay *display); +static void gimp_seamless_clone_tool_motion (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpDisplay *display); +static gboolean gimp_seamless_clone_tool_key_press (GimpTool *tool, + GdkEventKey *kevent, + GimpDisplay *display); +static void gimp_seamless_clone_tool_oper_update (GimpTool *tool, + const GimpCoords *coords, + GdkModifierType state, + gboolean proximity, + GimpDisplay *display); +static void gimp_seamless_clone_tool_cursor_update (GimpTool *tool, + const GimpCoords *coords, + GdkModifierType state, + GimpDisplay *display); +static void gimp_seamless_clone_tool_options_notify (GimpTool *tool, + GimpToolOptions *options, + const GParamSpec *pspec); + +static void gimp_seamless_clone_tool_draw (GimpDrawTool *draw_tool); + +static void gimp_seamless_clone_tool_start (GimpSeamlessCloneTool *sc, + GimpDisplay *display); + +static void gimp_seamless_clone_tool_stop (GimpSeamlessCloneTool *sc, + gboolean display_change_only); + +static void gimp_seamless_clone_tool_commit (GimpSeamlessCloneTool *sc); + +static void gimp_seamless_clone_tool_create_render_node (GimpSeamlessCloneTool *sc); +static gboolean gimp_seamless_clone_tool_render_node_update (GimpSeamlessCloneTool *sc); +static void gimp_seamless_clone_tool_create_filter (GimpSeamlessCloneTool *sc, + GimpDrawable *drawable); +static void gimp_seamless_clone_tool_filter_flush (GimpDrawableFilter *filter, + GimpTool *tool); +static void gimp_seamless_clone_tool_filter_update (GimpSeamlessCloneTool *sc); + + +G_DEFINE_TYPE (GimpSeamlessCloneTool, gimp_seamless_clone_tool, + GIMP_TYPE_DRAW_TOOL) + +#define parent_class gimp_seamless_clone_tool_parent_class + + +void +gimp_seamless_clone_tool_register (GimpToolRegisterCallback callback, + gpointer data) +{ + /* we should not know that "data" is a Gimp*, but what the heck this + * is experimental playground stuff + */ + if (GIMP_GUI_CONFIG (GIMP (data)->config)->playground_seamless_clone_tool) + (* callback) (GIMP_TYPE_SEAMLESS_CLONE_TOOL, + GIMP_TYPE_SEAMLESS_CLONE_OPTIONS, + gimp_seamless_clone_options_gui, + 0, + "gimp-seamless-clone-tool", + _("Seamless Clone"), + _("Seamless Clone: Seamlessly paste one image into another"), + N_("_Seamless Clone"), NULL, + NULL, GIMP_HELP_TOOL_SEAMLESS_CLONE, + GIMP_ICON_TOOL_SEAMLESS_CLONE, + data); +} + +static void +gimp_seamless_clone_tool_class_init (GimpSeamlessCloneToolClass *klass) +{ + GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass); + GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass); + + tool_class->control = gimp_seamless_clone_tool_control; + tool_class->button_press = gimp_seamless_clone_tool_button_press; + tool_class->button_release = gimp_seamless_clone_tool_button_release; + tool_class->motion = gimp_seamless_clone_tool_motion; + tool_class->key_press = gimp_seamless_clone_tool_key_press; + tool_class->oper_update = gimp_seamless_clone_tool_oper_update; + tool_class->cursor_update = gimp_seamless_clone_tool_cursor_update; + tool_class->options_notify = gimp_seamless_clone_tool_options_notify; + + draw_tool_class->draw = gimp_seamless_clone_tool_draw; +} + +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_seamless_clone_tool_control (GimpTool *tool, + GimpToolAction action, + GimpDisplay *display) +{ + GimpSeamlessCloneTool *sc = GIMP_SEAMLESS_CLONE_TOOL (tool); + + switch (action) + { + case GIMP_TOOL_ACTION_PAUSE: + case GIMP_TOOL_ACTION_RESUME: + break; + + case GIMP_TOOL_ACTION_HALT: + if (tool->display) + gimp_seamless_clone_tool_stop (sc, FALSE); + + /* TODO: If we have any tool options that should be reset, here is + * a good place to do so. + */ + break; + + case GIMP_TOOL_ACTION_COMMIT: + gimp_seamless_clone_tool_commit (sc); + break; + } + + GIMP_TOOL_CLASS (parent_class)->control (tool, action, display); +} + +/** + * gimp_seamless_clone_tool_start: + * @sc: The GimpSeamlessCloneTool to initialize for usage on the given + * display + * @display: The display to initialize the tool for + * + * A utility function to initialize a tool for working on a given + * display. At the beginning of each function, we can check if the event's + * display is the same as the tool's one, and if not call this. This is + * not required by the gimptool interface or anything like that, but + * this is a convenient way to do all the initialization work in one + * place, and this is how the base class (GimpDrawTool) does that + */ +static void +gimp_seamless_clone_tool_start (GimpSeamlessCloneTool *sc, + GimpDisplay *display) +{ + GimpTool *tool = GIMP_TOOL (sc); + GimpImage *image = gimp_display_get_image (display); + GimpDrawable *drawable = gimp_image_get_active_drawable (image); + + /* First handle the paste - we need to make sure we have one in order + * to do anything else. + */ + if (sc->paste == NULL) + { + GimpBuffer *buffer = gimp_clipboard_get_buffer (tool->tool_info->gimp); + + if (! buffer) + { + gimp_tool_push_status (tool, display, + "%s", + _("There is no image data in the clipboard to paste.")); + return; + } + + sc->paste = gimp_gegl_buffer_dup (gimp_buffer_get_buffer (buffer)); + g_object_unref (buffer); + + sc->width = gegl_buffer_get_width (sc->paste); + sc->height = gegl_buffer_get_height (sc->paste); + } + + /* Free resources which are relevant only for the previous display */ + gimp_seamless_clone_tool_stop (sc, TRUE); + + tool->display = display; + + gimp_seamless_clone_tool_create_filter (sc, drawable); + + gimp_draw_tool_start (GIMP_DRAW_TOOL (sc), display); + + sc->tool_state = SC_STATE_RENDER_WAIT; +} + + +/** + * gimp_seamless_clone_tool_stop: + * @sc: The seamless clone tool whose resources should be freed + * @display_change_only: Mark that the only reason for this call was a + * switch of the working display. + * + * This function frees any resources associated with the seamless clone + * tool, including caches, gegl graphs, and anything the tool created. + * Afterwards, it initializes all the relevant pointers to some initial + * value (usually NULL) like the init function does. + * + * Note that for seamless cloning, no change needs to be done when + * switching to a different display, except for clearing the image map. + * So for that, we provide a boolean parameter to specify that the only + * change was one of the display + */ +static void +gimp_seamless_clone_tool_stop (GimpSeamlessCloneTool *sc, + gboolean display_change_only) +{ + /* See if we actually have any reason to stop */ + if (sc->tool_state == SC_STATE_INIT) + return; + + if (! display_change_only) + { + sc->tool_state = SC_STATE_INIT; + + g_clear_object (&sc->paste); + g_clear_object (&sc->render_node); + sc->sc_node = NULL; + } + + /* This should always happen, even when we just switch a display */ + if (sc->filter) + { + gimp_drawable_filter_abort (sc->filter); + g_clear_object (&sc->filter); + + if (GIMP_TOOL (sc)->display) + gimp_image_flush (gimp_display_get_image (GIMP_TOOL (sc)->display)); + } + + gimp_draw_tool_stop (GIMP_DRAW_TOOL (sc)); +} + +static void +gimp_seamless_clone_tool_commit (GimpSeamlessCloneTool *sc) +{ + GimpTool *tool = GIMP_TOOL (sc); + + if (sc->filter) + { + gimp_tool_control_push_preserve (tool->control, TRUE); + + gimp_drawable_filter_commit (sc->filter, GIMP_PROGRESS (tool), FALSE); + g_clear_object (&sc->filter); + + gimp_tool_control_pop_preserve (tool->control); + + gimp_image_flush (gimp_display_get_image (tool->display)); + } +} + +static void +gimp_seamless_clone_tool_button_press (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonPressType press_type, + GimpDisplay *display) +{ + GimpSeamlessCloneTool *sc = GIMP_SEAMLESS_CLONE_TOOL (tool); + + if (display != tool->display) + { + gimp_seamless_clone_tool_start (sc, display); + + /* Center the paste on the mouse */ + sc->xoff = (gint) coords->x - sc->width / 2; + sc->yoff = (gint) coords->y - sc->height / 2; + } + + if (sc->tool_state == SC_STATE_RENDER_WAIT && + gimp_seamless_clone_tool_is_in_paste_c (sc, coords)) + { + gimp_draw_tool_pause (GIMP_DRAW_TOOL (sc)); + + /* Record previous location, in case the user cancels the + * movement + */ + sc->xoff_p = sc->xoff; + sc->yoff_p = sc->yoff; + + /* Record the mouse location, so that the dragging offset can be + * calculated + */ + sc->xclick = coords->x; + sc->yclick = coords->y; + + gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool)); + + if (gimp_seamless_clone_tool_render_node_update (sc)) + { + gimp_seamless_clone_tool_filter_update (sc); + } + + sc->tool_state = SC_STATE_RENDER_MOTION; + + /* In order to receive motion events from the current click, we must + * activate the tool control + */ + gimp_tool_control_activate (tool->control); + } +} + +void +gimp_seamless_clone_tool_button_release (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpButtonReleaseType release_type, + GimpDisplay *display) +{ + GimpSeamlessCloneTool *sc = GIMP_SEAMLESS_CLONE_TOOL (tool); + + gimp_tool_control_halt (tool->control); + + /* There is nothing to do, unless we were actually moving a paste */ + if (sc->tool_state == SC_STATE_RENDER_MOTION) + { + gimp_draw_tool_pause (GIMP_DRAW_TOOL (sc)); + + if (release_type == GIMP_BUTTON_RELEASE_CANCEL) + { + sc->xoff = sc->xoff_p; + sc->yoff = sc->yoff_p; + } + else + { + sc->xoff = sc->xoff_p + (gint) (coords->x - sc->xclick); + sc->yoff = sc->yoff_p + (gint) (coords->y - sc->yclick); + } + + gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool)); + + if (gimp_seamless_clone_tool_render_node_update (sc)) + { + gimp_seamless_clone_tool_filter_update (sc); + } + + sc->tool_state = SC_STATE_RENDER_WAIT; + } +} + +static void +gimp_seamless_clone_tool_motion (GimpTool *tool, + const GimpCoords *coords, + guint32 time, + GdkModifierType state, + GimpDisplay *display) +{ + GimpSeamlessCloneTool *sc = GIMP_SEAMLESS_CLONE_TOOL (tool); + + if (sc->tool_state == SC_STATE_RENDER_MOTION) + { + gimp_draw_tool_pause (GIMP_DRAW_TOOL (sc)); + + sc->xoff = sc->xoff_p + (gint) (coords->x - sc->xclick); + sc->yoff = sc->yoff_p + (gint) (coords->y - sc->yclick); + + gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool)); + + if (gimp_seamless_clone_tool_render_node_update (sc)) + { + gimp_seamless_clone_tool_filter_update (sc); + } + } +} + +static gboolean +gimp_seamless_clone_tool_key_press (GimpTool *tool, + GdkEventKey *kevent, + GimpDisplay *display) +{ + GimpSeamlessCloneTool *sct = GIMP_SEAMLESS_CLONE_TOOL (tool); + + if (sct->tool_state == SC_STATE_RENDER_MOTION || + sct->tool_state == SC_STATE_RENDER_WAIT) + { + switch (kevent->keyval) + { + case GDK_KEY_Return: + case GDK_KEY_KP_Enter: + case GDK_KEY_ISO_Enter: + gimp_tool_control_set_preserve (tool->control, TRUE); + + /* TODO: there may be issues with committing the image map + * result after some changes were made and the preview + * was scrolled. We can fix these by either invalidating + * the area which is a union of the previous paste + * rectangle each time (in the update function) or by + * invalidating and re-rendering all now (expensive and + * perhaps useless */ + gimp_drawable_filter_commit (sct->filter, GIMP_PROGRESS (tool), FALSE); + g_clear_object (&sct->filter); + + gimp_tool_control_set_preserve (tool->control, FALSE); + + gimp_image_flush (gimp_display_get_image (display)); + + gimp_seamless_clone_tool_control (tool, GIMP_TOOL_ACTION_HALT, + display); + return TRUE; + + case GDK_KEY_Escape: + gimp_seamless_clone_tool_control (tool, GIMP_TOOL_ACTION_HALT, + display); + return TRUE; + + default: + break; + } + } + + return FALSE; +} + +static void +gimp_seamless_clone_tool_oper_update (GimpTool *tool, + const GimpCoords *coords, + GdkModifierType state, + gboolean proximity, + GimpDisplay *display) +{ + gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool)); + + /* TODO: Modify data here */ + + gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool)); +} + +/* Mouse cursor policy: + * - Always use the move cursor + * - While dragging the paste, use a move modified + * - Else, While hovering above it, display no modifier + * - Else, display a "bad" modifier + */ +static void +gimp_seamless_clone_tool_cursor_update (GimpTool *tool, + const GimpCoords *coords, + GdkModifierType state, + GimpDisplay *display) +{ + GimpSeamlessCloneTool *sc = GIMP_SEAMLESS_CLONE_TOOL (tool); + GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_BAD; + + /* Only update if the tool is actually active on some display */ + if (tool->display) + { + if (sc->tool_state == SC_STATE_RENDER_MOTION) + { + modifier = GIMP_CURSOR_MODIFIER_MOVE; + } + else if (sc->tool_state == SC_STATE_RENDER_WAIT && + gimp_seamless_clone_tool_is_in_paste_c (sc, coords)) + { + modifier = GIMP_CURSOR_MODIFIER_NONE; + } + + gimp_tool_control_set_cursor_modifier (tool->control, modifier); + } + + GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display); +} + +static void +gimp_seamless_clone_tool_options_notify (GimpTool *tool, + GimpToolOptions *options, + const GParamSpec *pspec) +{ + GimpSeamlessCloneTool *sc = GIMP_SEAMLESS_CLONE_TOOL (tool); + + GIMP_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec); + + if (! tool->display) + return; + + gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool)); + + if (! strcmp (pspec->name, "max-refine-scale")) + { + if (gimp_seamless_clone_tool_render_node_update (sc)) + { + gimp_seamless_clone_tool_filter_update (sc); + } + } + + gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool)); +} + +static void +gimp_seamless_clone_tool_draw (GimpDrawTool *draw_tool) +{ + GimpSeamlessCloneTool *sc = GIMP_SEAMLESS_CLONE_TOOL (draw_tool); + + if (sc->tool_state == SC_STATE_RENDER_WAIT || + sc->tool_state == SC_STATE_RENDER_MOTION) + { + gimp_draw_tool_add_rectangle (draw_tool, FALSE, + sc->xoff, sc->yoff, sc->width, sc->height); + } +} + +/** + * gimp_seamless_clone_tool_create_render_node: + * @sc: The GimpSeamlessCloneTool to initialize + * + * This function creates a Gegl node graph of the composition which is + * needed to render the drawable. The graph should have an "input" pad + * which will receive the drawable on which the preview is applied, and + * it should also have an "output" pad to which the final result will be + * rendered + */ +static void +gimp_seamless_clone_tool_create_render_node (GimpSeamlessCloneTool *sc) +{ + /* Here is a textual description of the graph we are going to create: + * + * <input> <- drawable + * +--+--------------------------+ + * | |output | + * | | | + * | | <buffer-source> <- paste | + * | | |output | + * | | | | + * | |input |aux | + * |<seamless-paste-render> | + * | |output | + * | | | + * | |input | + * +----+------------------------+ + * <output> + */ + GimpSeamlessCloneOptions *options = GIMP_SEAMLESS_CLONE_TOOL_GET_OPTIONS (sc); + GeglNode *node; + GeglNode *op, *paste, *overlay; + GeglNode *input, *output; + + node = gegl_node_new (); + + input = gegl_node_get_input_proxy (node, "input"); + output = gegl_node_get_output_proxy (node, "output"); + + paste = gegl_node_new_child (node, + "operation", "gegl:buffer-source", + "buffer", sc->paste, + NULL); + + op = gegl_node_new_child (node, + "operation", "gegl:seamless-clone", + "max-refine-scale", options->max_refine_scale, + NULL); + + overlay = gegl_node_new_child (node, + "operation", "svg:dst-over", + NULL); + + gegl_node_connect_to (input, "output", + op, "input"); + + gegl_node_connect_to (paste, "output", + op, "aux"); + + gegl_node_connect_to (op, "output", + overlay, "input"); + + gegl_node_connect_to (input, "output", + overlay, "aux"); + + gegl_node_connect_to (overlay, "output", + output, "input"); + + sc->render_node = node; + sc->sc_node = op; +} + +/* gimp_seamless_clone_tool_render_node_update: + * sc: the Seamless Clone tool whose render has to be updated. + * + * Returns: TRUE if any property changed. + */ +static gboolean +gimp_seamless_clone_tool_render_node_update (GimpSeamlessCloneTool *sc) +{ + static gint rendered__max_refine_scale = -1; + static gint rendered_xoff = G_MAXINT; + static gint rendered_yoff = G_MAXINT; + + GimpSeamlessCloneOptions *options = GIMP_SEAMLESS_CLONE_TOOL_GET_OPTIONS (sc); + GimpDrawable *bg = GIMP_TOOL (sc)->drawable; + gint off_x, off_y; + + /* All properties stay the same. No need to update. */ + if (rendered__max_refine_scale == options->max_refine_scale && + rendered_xoff == sc->xoff && + rendered_yoff == sc->yoff) + return FALSE; + + gimp_item_get_offset (GIMP_ITEM (bg), &off_x, &off_y); + + gegl_node_set (sc->sc_node, + "xoff", (gint) sc->xoff - off_x, + "yoff", (gint) sc->yoff - off_y, + "max-refine-scale", (gint) options->max_refine_scale, + NULL); + + rendered__max_refine_scale = options->max_refine_scale; + rendered_xoff = sc->xoff; + rendered_yoff = sc->yoff; + + return TRUE; +} + +static void +gimp_seamless_clone_tool_create_filter (GimpSeamlessCloneTool *sc, + GimpDrawable *drawable) +{ + if (! sc->render_node) + gimp_seamless_clone_tool_create_render_node (sc); + + sc->filter = gimp_drawable_filter_new (drawable, + _("Seamless Clone"), + sc->render_node, + GIMP_ICON_TOOL_SEAMLESS_CLONE); + + gimp_drawable_filter_set_region (sc->filter, GIMP_FILTER_REGION_DRAWABLE); + + g_signal_connect (sc->filter, "flush", + G_CALLBACK (gimp_seamless_clone_tool_filter_flush), + sc); +} + +static void +gimp_seamless_clone_tool_filter_flush (GimpDrawableFilter *filter, + GimpTool *tool) +{ + GimpImage *image = gimp_display_get_image (tool->display); + + gimp_projection_flush (gimp_image_get_projection (image)); +} + +static void +gimp_seamless_clone_tool_filter_update (GimpSeamlessCloneTool *sc) +{ + GimpTool *tool = GIMP_TOOL (sc); + GimpDisplayShell *shell = gimp_display_get_shell (tool->display); + GimpItem *item = GIMP_ITEM (tool->drawable); + gint x, y; + gint w, h; + gint off_x, off_y; + GeglRectangle visible; + GeglOperation *op = NULL; + + GimpProgress *progress; + GeglNode *output; + GeglProcessor *processor; + gdouble value; + + progress = gimp_progress_start (GIMP_PROGRESS (sc), FALSE, + _("Cloning the foreground object")); + + /* Find out at which x,y is the top left corner of the currently + * displayed part */ + gimp_display_shell_untransform_viewport (shell, ! shell->show_all, + &x, &y, &w, &h); + + /* Find out where is our drawable positioned */ + gimp_item_get_offset (item, &off_x, &off_y); + + /* Create a rectangle from the intersection of the currently displayed + * part with the drawable */ + gimp_rectangle_intersect (x, y, w, h, + off_x, + off_y, + gimp_item_get_width (item), + gimp_item_get_height (item), + &visible.x, + &visible.y, + &visible.width, + &visible.height); + + /* Since the filter_apply function receives a rectangle describing + * where it should update the preview, and since that rectangle should + * be relative to the drawable's location, we now offset back by the + * drawable's offsetts. */ + visible.x -= off_x; + visible.y -= off_y; + + g_object_get (sc->sc_node, "gegl-operation", &op, NULL); + /* If any cache of the visible area was present, clear it! + * We need to clear the cache in the sc_node, since that is + * where the previous paste was located + */ + gegl_operation_invalidate (op, &visible, TRUE); + g_object_unref (op); + + /* Now update the image map and show this area */ + gimp_drawable_filter_apply (sc->filter, NULL); + + /* Show update progress. */ + output = gegl_node_get_output_proxy (sc->render_node, "output"); + processor = gegl_node_new_processor (output, NULL); + + while (gegl_processor_work (processor, &value)) + { + if (progress) + gimp_progress_set_value (progress, value); + } + + if (progress) + gimp_progress_end (progress); + + g_object_unref (processor); +} |