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-rw-r--r--app/tools/gimpsamplepointtool.c373
1 files changed, 373 insertions, 0 deletions
diff --git a/app/tools/gimpsamplepointtool.c b/app/tools/gimpsamplepointtool.c
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+++ b/app/tools/gimpsamplepointtool.c
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+/* 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 "tools-types.h"
+
+#include "core/gimp.h"
+#include "core/gimpsamplepoint.h"
+#include "core/gimpimage.h"
+#include "core/gimpimage-sample-points.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+#include "display/gimpdisplayshell-selection.h"
+#include "display/gimpdisplayshell-transform.h"
+
+#include "gimpsamplepointtool.h"
+#include "gimptoolcontrol.h"
+#include "tool_manager.h"
+
+#include "gimp-intl.h"
+
+
+/* local function prototypes */
+
+static void gimp_sample_point_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display);
+static void gimp_sample_point_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display);
+
+static void gimp_sample_point_tool_draw (GimpDrawTool *draw_tool);
+
+static void gimp_sample_point_tool_start (GimpTool *parent_tool,
+ GimpDisplay *display,
+ GimpSamplePoint *sample_point);
+
+
+G_DEFINE_TYPE (GimpSamplePointTool, gimp_sample_point_tool, GIMP_TYPE_DRAW_TOOL)
+
+#define parent_class gimp_sample_point_tool_parent_class
+
+
+static void
+gimp_sample_point_tool_class_init (GimpSamplePointToolClass *klass)
+{
+ GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
+ GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
+
+ tool_class->button_release = gimp_sample_point_tool_button_release;
+ tool_class->motion = gimp_sample_point_tool_motion;
+
+ draw_tool_class->draw = gimp_sample_point_tool_draw;
+}
+
+static void
+gimp_sample_point_tool_init (GimpSamplePointTool *sp_tool)
+{
+ GimpTool *tool = GIMP_TOOL (sp_tool);
+
+ gimp_tool_control_set_snap_to (tool->control, FALSE);
+ gimp_tool_control_set_handle_empty_image (tool->control, TRUE);
+ gimp_tool_control_set_tool_cursor (tool->control,
+ GIMP_TOOL_CURSOR_MOVE);
+ gimp_tool_control_set_scroll_lock (tool->control, TRUE);
+ gimp_tool_control_set_precision (tool->control,
+ GIMP_CURSOR_PRECISION_PIXEL_CENTER);
+
+ sp_tool->sample_point = NULL;
+ sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+ sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+}
+
+static void
+gimp_sample_point_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display)
+{
+ GimpSamplePointTool *sp_tool = GIMP_SAMPLE_POINT_TOOL (tool);
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+ GimpImage *image = gimp_display_get_image (display);
+
+ gimp_tool_pop_status (tool, display);
+
+ gimp_tool_control_halt (tool->control);
+
+ gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
+
+ if (release_type != GIMP_BUTTON_RELEASE_CANCEL)
+ {
+ gint width = gimp_image_get_width (image);
+ gint height = gimp_image_get_height (image);
+
+ if (sp_tool->sample_point_x == GIMP_SAMPLE_POINT_POSITION_UNDEFINED ||
+ sp_tool->sample_point_x < 0 ||
+ sp_tool->sample_point_x >= width ||
+ sp_tool->sample_point_y == GIMP_SAMPLE_POINT_POSITION_UNDEFINED ||
+ sp_tool->sample_point_y < 0 ||
+ sp_tool->sample_point_y >= height)
+ {
+ if (sp_tool->sample_point)
+ {
+ gimp_image_remove_sample_point (image,
+ sp_tool->sample_point, TRUE);
+ sp_tool->sample_point = NULL;
+ }
+ }
+ else
+ {
+ if (sp_tool->sample_point)
+ {
+ gimp_image_move_sample_point (image,
+ sp_tool->sample_point,
+ sp_tool->sample_point_x,
+ sp_tool->sample_point_y,
+ TRUE);
+ }
+ else
+ {
+ sp_tool->sample_point =
+ gimp_image_add_sample_point_at_pos (image,
+ sp_tool->sample_point_x,
+ sp_tool->sample_point_y,
+ TRUE);
+ }
+ }
+
+ gimp_image_flush (image);
+ }
+
+ gimp_display_shell_selection_resume (shell);
+
+ sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+ sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+
+ tool_manager_pop_tool (display->gimp);
+ g_object_unref (sp_tool);
+
+ {
+ GimpTool *active_tool = tool_manager_get_active (display->gimp);
+
+ if (GIMP_IS_DRAW_TOOL (active_tool))
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (active_tool));
+
+ tool_manager_oper_update_active (display->gimp, coords, state,
+ TRUE, display);
+ tool_manager_cursor_update_active (display->gimp, coords, state,
+ display);
+
+ if (GIMP_IS_DRAW_TOOL (active_tool))
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (active_tool));
+ }
+}
+
+static void
+gimp_sample_point_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display)
+
+{
+ GimpSamplePointTool *sp_tool = GIMP_SAMPLE_POINT_TOOL (tool);
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+ gboolean delete_point = FALSE;
+ gint tx, ty;
+
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+
+ gimp_display_shell_transform_xy (shell,
+ coords->x, coords->y,
+ &tx, &ty);
+
+ if (tx < 0 || tx >= shell->disp_width ||
+ ty < 0 || ty >= shell->disp_height)
+ {
+ sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+ sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+
+ delete_point = TRUE;
+ }
+ else
+ {
+ GimpImage *image = gimp_display_get_image (display);
+ gint width = gimp_image_get_width (image);
+ gint height = gimp_image_get_height (image);
+
+ sp_tool->sample_point_x = floor (coords->x);
+ sp_tool->sample_point_y = floor (coords->y);
+
+ if (sp_tool->sample_point_x < 0 ||
+ sp_tool->sample_point_x >= height ||
+ sp_tool->sample_point_y < 0 ||
+ sp_tool->sample_point_y >= width)
+ {
+ delete_point = TRUE;
+ }
+ }
+
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+
+ gimp_tool_pop_status (tool, display);
+
+ if (delete_point)
+ {
+ gimp_tool_push_status (tool, display,
+ sp_tool->sample_point ?
+ _("Remove Sample Point") :
+ _("Cancel Sample Point"));
+ }
+ else if (sp_tool->sample_point)
+ {
+ gimp_tool_push_status_coords (tool, display,
+ gimp_tool_control_get_precision (tool->control),
+ _("Move Sample Point: "),
+ sp_tool->sample_point_x -
+ sp_tool->sample_point_old_x,
+ ", ",
+ sp_tool->sample_point_y -
+ sp_tool->sample_point_old_y,
+ NULL);
+ }
+ else
+ {
+ gimp_tool_push_status_coords (tool, display,
+ gimp_tool_control_get_precision (tool->control),
+ _("Add Sample Point: "),
+ sp_tool->sample_point_x,
+ ", ",
+ sp_tool->sample_point_y,
+ NULL);
+ }
+}
+
+static void
+gimp_sample_point_tool_draw (GimpDrawTool *draw_tool)
+{
+ GimpSamplePointTool *sp_tool = GIMP_SAMPLE_POINT_TOOL (draw_tool);
+
+ if (sp_tool->sample_point_x != GIMP_SAMPLE_POINT_POSITION_UNDEFINED &&
+ sp_tool->sample_point_y != GIMP_SAMPLE_POINT_POSITION_UNDEFINED)
+ {
+ gimp_draw_tool_add_crosshair (draw_tool,
+ sp_tool->sample_point_x,
+ sp_tool->sample_point_y);
+ }
+}
+
+static void
+gimp_sample_point_tool_start (GimpTool *parent_tool,
+ GimpDisplay *display,
+ GimpSamplePoint *sample_point)
+{
+ GimpSamplePointTool *sp_tool;
+ GimpTool *tool;
+
+ sp_tool = g_object_new (GIMP_TYPE_SAMPLE_POINT_TOOL,
+ "tool-info", parent_tool->tool_info,
+ NULL);
+
+ tool = GIMP_TOOL (sp_tool);
+
+ gimp_display_shell_selection_pause (gimp_display_get_shell (display));
+
+ if (sample_point)
+ {
+ sp_tool->sample_point = sample_point;
+
+ gimp_sample_point_get_position (sample_point,
+ &sp_tool->sample_point_old_x,
+ &sp_tool->sample_point_old_y);
+
+ sp_tool->sample_point_x = sp_tool->sample_point_old_x;
+ sp_tool->sample_point_y = sp_tool->sample_point_old_y;
+ }
+ else
+ {
+ sp_tool->sample_point = NULL;
+ sp_tool->sample_point_old_x = 0;
+ sp_tool->sample_point_old_y = 0;
+ sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+ sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
+ }
+
+ gimp_tool_set_cursor (tool, display,
+ GIMP_CURSOR_MOUSE,
+ GIMP_TOOL_CURSOR_COLOR_PICKER,
+ GIMP_CURSOR_MODIFIER_MOVE);
+
+ tool_manager_push_tool (display->gimp, tool);
+
+ tool->display = display;
+ gimp_tool_control_activate (tool->control);
+
+ gimp_draw_tool_start (GIMP_DRAW_TOOL (sp_tool), display);
+
+ if (sp_tool->sample_point)
+ {
+ gimp_tool_push_status_coords (tool, display,
+ gimp_tool_control_get_precision (tool->control),
+ _("Move Sample Point: "),
+ sp_tool->sample_point_x -
+ sp_tool->sample_point_old_x,
+ ", ",
+ sp_tool->sample_point_y -
+ sp_tool->sample_point_old_y,
+ NULL);
+ }
+ else
+ {
+ gimp_tool_push_status_coords (tool, display,
+ gimp_tool_control_get_precision (tool->control),
+ _("Add Sample Point: "),
+ sp_tool->sample_point_x,
+ ", ",
+ sp_tool->sample_point_y,
+ NULL);
+ }
+}
+
+
+/* public functions */
+
+void
+gimp_sample_point_tool_start_new (GimpTool *parent_tool,
+ GimpDisplay *display)
+{
+ g_return_if_fail (GIMP_IS_TOOL (parent_tool));
+ g_return_if_fail (GIMP_IS_DISPLAY (display));
+
+ gimp_sample_point_tool_start (parent_tool, display, NULL);
+}
+
+void
+gimp_sample_point_tool_start_edit (GimpTool *parent_tool,
+ GimpDisplay *display,
+ GimpSamplePoint *sample_point)
+{
+ g_return_if_fail (GIMP_IS_TOOL (parent_tool));
+ g_return_if_fail (GIMP_IS_DISPLAY (display));
+ g_return_if_fail (GIMP_IS_SAMPLE_POINT (sample_point));
+
+ gimp_sample_point_tool_start (parent_tool, display, sample_point);
+}
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