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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:23:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:23:22 +0000
commite42129241681dde7adae7d20697e7b421682fbb4 (patch)
treeaf1fe815a5e639e68e59fabd8395ec69458b3e5e /app/tools/gimpgradienttool-editor.c
parentInitial commit. (diff)
downloadgimp-e42129241681dde7adae7d20697e7b421682fbb4.tar.xz
gimp-e42129241681dde7adae7d20697e7b421682fbb4.zip
Adding upstream version 2.10.22.upstream/2.10.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--app/tools/gimpgradienttool-editor.c2520
1 files changed, 2520 insertions, 0 deletions
diff --git a/app/tools/gimpgradienttool-editor.c b/app/tools/gimpgradienttool-editor.c
new file mode 100644
index 0000000..ad4528b
--- /dev/null
+++ b/app/tools/gimpgradienttool-editor.c
@@ -0,0 +1,2520 @@
+/* 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 <gdk/gdkkeysyms.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "tools-types.h"
+
+#include "operations/gimp-operation-config.h"
+
+#include "core/gimpdata.h"
+#include "core/gimpgradient.h"
+#include "core/gimp-gradients.h"
+#include "core/gimpimage.h"
+
+#include "widgets/gimpcolorpanel.h"
+#include "widgets/gimpeditor.h"
+#include "widgets/gimpwidgets-utils.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimpdisplayshell.h"
+#include "display/gimptoolgui.h"
+#include "display/gimptoolline.h"
+
+#include "gimpgradientoptions.h"
+#include "gimpgradienttool.h"
+#include "gimpgradienttool-editor.h"
+
+#include "gimp-intl.h"
+
+
+#define EPSILON 2e-10
+
+
+typedef enum
+{
+ DIRECTION_NONE,
+ DIRECTION_LEFT,
+ DIRECTION_RIGHT
+} Direction;
+
+
+typedef struct
+{
+ /* line endpoints at the beginning of the operation */
+ gdouble start_x;
+ gdouble start_y;
+ gdouble end_x;
+ gdouble end_y;
+
+ /* copy of the gradient at the beginning of the operation, owned by the gradient
+ * info, or NULL, if the gradient isn't affected
+ */
+ GimpGradient *gradient;
+
+ /* handle added by the operation, or HANDLE_NONE */
+ gint added_handle;
+ /* handle removed by the operation, or HANDLE_NONE */
+ gint removed_handle;
+ /* selected handle at the end of the operation, or HANDLE_NONE */
+ gint selected_handle;
+} GradientInfo;
+
+
+/* local function prototypes */
+
+static gboolean gimp_gradient_tool_editor_line_can_add_slider (GimpToolLine *line,
+ gdouble value,
+ GimpGradientTool *gradient_tool);
+static gint gimp_gradient_tool_editor_line_add_slider (GimpToolLine *line,
+ gdouble value,
+ GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_line_prepare_to_remove_slider (GimpToolLine *line,
+ gint slider,
+ gboolean remove,
+ GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_line_remove_slider (GimpToolLine *line,
+ gint slider,
+ GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_line_selection_changed (GimpToolLine *line,
+ GimpGradientTool *gradient_tool);
+static gboolean gimp_gradient_tool_editor_line_handle_clicked (GimpToolLine *line,
+ gint handle,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_gui_response (GimpToolGui *gui,
+ gint response_id,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_color_entry_color_clicked (GimpColorButton *button,
+ GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_color_entry_color_changed (GimpColorButton *button,
+ GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_color_entry_color_response (GimpColorButton *button,
+ GimpColorDialogState state,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_color_entry_type_changed (GtkComboBox *combo,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_endpoint_se_value_changed (GimpSizeEntry *se,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_stop_se_value_changed (GimpSizeEntry *se,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_stop_delete_clicked (GtkWidget *button,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_midpoint_se_value_changed (GimpSizeEntry *se,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_midpoint_type_changed (GtkComboBox *combo,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_midpoint_color_changed (GtkComboBox *combo,
+ GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_midpoint_new_stop_clicked (GtkWidget *button,
+ GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_midpoint_center_clicked (GtkWidget *button,
+ GimpGradientTool *gradient_tool);
+
+static gboolean gimp_gradient_tool_editor_flush_idle (GimpGradientTool *gradient_tool);
+
+static gboolean gimp_gradient_tool_editor_is_gradient_editable (GimpGradientTool *gradient_tool);
+
+static gboolean gimp_gradient_tool_editor_handle_is_endpoint (GimpGradientTool *gradient_tool,
+ gint handle);
+static gboolean gimp_gradient_tool_editor_handle_is_stop (GimpGradientTool *gradient_tool,
+ gint handle);
+static gboolean gimp_gradient_tool_editor_handle_is_midpoint (GimpGradientTool *gradient_tool,
+ gint handle);
+static GimpGradientSegment * gimp_gradient_tool_editor_handle_get_segment (GimpGradientTool *gradient_tool,
+ gint handle);
+
+static void gimp_gradient_tool_editor_block_handlers (GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_unblock_handlers (GimpGradientTool *gradient_tool);
+static gboolean gimp_gradient_tool_editor_are_handlers_blocked (GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_freeze_gradient (GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_thaw_gradient (GimpGradientTool *gradient_tool);
+
+static gint gimp_gradient_tool_editor_add_stop (GimpGradientTool *gradient_tool,
+ gdouble value);
+static void gimp_gradient_tool_editor_delete_stop (GimpGradientTool *gradient_tool,
+ gint slider);
+static gint gimp_gradient_tool_editor_midpoint_to_stop (GimpGradientTool *gradient_tool,
+ gint slider);
+
+static void gimp_gradient_tool_editor_update_sliders (GimpGradientTool *gradient_tool);
+
+static void gimp_gradient_tool_editor_purge_gradient_history (GSList **stack);
+static void gimp_gradient_tool_editor_purge_gradient (GimpGradientTool *gradient_tool);
+
+static GtkWidget * gimp_gradient_tool_editor_color_entry_new (GimpGradientTool *gradient_tool,
+ const gchar *title,
+ Direction direction,
+ GtkWidget *chain_button,
+ GtkWidget **color_panel,
+ GtkWidget **type_combo);
+static void gimp_gradient_tool_editor_init_endpoint_gui (GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_init_stop_gui (GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_init_midpoint_gui (GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_update_endpoint_gui (GimpGradientTool *gradient_tool,
+ gint selection);
+static void gimp_gradient_tool_editor_update_stop_gui (GimpGradientTool *gradient_tool,
+ gint selection);
+static void gimp_gradient_tool_editor_update_midpoint_gui (GimpGradientTool *gradient_tool,
+ gint selection);
+static void gimp_gradient_tool_editor_update_gui (GimpGradientTool *gradient_tool);
+
+static GradientInfo * gimp_gradient_tool_editor_gradient_info_new (GimpGradientTool *gradient_tool);
+static void gimp_gradient_tool_editor_gradient_info_free (GradientInfo *info);
+static void gimp_gradient_tool_editor_gradient_info_apply (GimpGradientTool *gradient_tool,
+ const GradientInfo *info,
+ gboolean set_selection);
+static gboolean gimp_gradient_tool_editor_gradient_info_is_trivial (GimpGradientTool *gradient_tool,
+ const GradientInfo *info);
+
+
+/* private functions */
+
+
+static gboolean
+gimp_gradient_tool_editor_line_can_add_slider (GimpToolLine *line,
+ gdouble value,
+ GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ gdouble offset = options->offset / 100.0;
+
+ return gimp_gradient_tool_editor_is_gradient_editable (gradient_tool) &&
+ value >= offset;
+}
+
+static gint
+gimp_gradient_tool_editor_line_add_slider (GimpToolLine *line,
+ gdouble value,
+ GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
+ gdouble offset = options->offset / 100.0;
+
+ /* adjust slider value according to the offset */
+ value = (value - offset) / (1.0 - offset);
+
+ /* flip the slider value, if necessary */
+ if (paint_options->gradient_options->gradient_reverse)
+ value = 1.0 - value;
+
+ return gimp_gradient_tool_editor_add_stop (gradient_tool, value);
+}
+
+static void
+gimp_gradient_tool_editor_line_prepare_to_remove_slider (GimpToolLine *line,
+ gint slider,
+ gboolean remove,
+ GimpGradientTool *gradient_tool)
+{
+ if (remove)
+ {
+ GradientInfo *info;
+ GimpGradient *tentative_gradient;
+
+ /* show a tentative gradient, demonstrating the result of actually
+ * removing the slider
+ */
+
+ info = gradient_tool->undo_stack->data;
+
+ if (info->added_handle == slider)
+ {
+ /* see comment in gimp_gradient_tool_editor_delete_stop() */
+
+ gimp_assert (info->gradient != NULL);
+
+ tentative_gradient = g_object_ref (info->gradient);
+ }
+ else
+ {
+ GimpGradientSegment *seg;
+ gint i;
+
+ tentative_gradient =
+ GIMP_GRADIENT (gimp_data_duplicate (GIMP_DATA (gradient_tool->gradient)));
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, slider);
+
+ i = gimp_gradient_segment_range_get_n_segments (gradient_tool->gradient,
+ gradient_tool->gradient->segments,
+ seg) - 1;
+
+ seg = gimp_gradient_segment_get_nth (tentative_gradient->segments, i);
+
+ gimp_gradient_segment_range_merge (tentative_gradient,
+ seg, seg->next, NULL, NULL);
+ }
+
+ gimp_gradient_tool_set_tentative_gradient (gradient_tool, tentative_gradient);
+
+ g_object_unref (tentative_gradient);
+ }
+ else
+ {
+ gimp_gradient_tool_set_tentative_gradient (gradient_tool, NULL);
+ }
+}
+
+static void
+gimp_gradient_tool_editor_line_remove_slider (GimpToolLine *line,
+ gint slider,
+ GimpGradientTool *gradient_tool)
+{
+ gimp_gradient_tool_editor_delete_stop (gradient_tool, slider);
+ gimp_gradient_tool_set_tentative_gradient (gradient_tool, NULL);
+}
+
+static void
+gimp_gradient_tool_editor_line_selection_changed (GimpToolLine *line,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (gradient_tool->gui)
+ {
+ /* hide all color dialogs */
+ gimp_color_panel_dialog_response (
+ GIMP_COLOR_PANEL (gradient_tool->endpoint_color_panel),
+ GIMP_COLOR_DIALOG_OK);
+ gimp_color_panel_dialog_response (
+ GIMP_COLOR_PANEL (gradient_tool->stop_left_color_panel),
+ GIMP_COLOR_DIALOG_OK);
+ gimp_color_panel_dialog_response (
+ GIMP_COLOR_PANEL (gradient_tool->stop_right_color_panel),
+ GIMP_COLOR_DIALOG_OK);
+
+ /* reset the stop colors chain button */
+ if (gimp_gradient_tool_editor_handle_is_stop (gradient_tool, selection))
+ {
+ const GimpGradientSegment *seg;
+ gboolean homogeneous;
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool,
+ selection);
+
+ homogeneous = seg->right_color.r == seg->next->left_color.r &&
+ seg->right_color.g == seg->next->left_color.g &&
+ seg->right_color.b == seg->next->left_color.b &&
+ seg->right_color.a == seg->next->left_color.a &&
+ seg->right_color_type == seg->next->left_color_type;
+
+ gimp_chain_button_set_active (
+ GIMP_CHAIN_BUTTON (gradient_tool->stop_chain_button), homogeneous);
+ }
+ }
+
+ gimp_gradient_tool_editor_update_gui (gradient_tool);
+}
+
+static gboolean
+gimp_gradient_tool_editor_line_handle_clicked (GimpToolLine *line,
+ gint handle,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpGradientTool *gradient_tool)
+{
+ if (gimp_gradient_tool_editor_handle_is_midpoint (gradient_tool, handle))
+ {
+ if (press_type == GIMP_BUTTON_PRESS_DOUBLE &&
+ gimp_gradient_tool_editor_is_gradient_editable (gradient_tool))
+ {
+ gint stop;
+
+ stop = gimp_gradient_tool_editor_midpoint_to_stop (gradient_tool, handle);
+
+ gimp_tool_line_set_selection (line, stop);
+
+ /* return FALSE, so that the new slider can be dragged immediately */
+ return FALSE;
+ }
+ }
+
+ return FALSE;
+}
+
+
+static void
+gimp_gradient_tool_editor_gui_response (GimpToolGui *gui,
+ gint response_id,
+ GimpGradientTool *gradient_tool)
+{
+ switch (response_id)
+ {
+ default:
+ gimp_tool_line_set_selection (GIMP_TOOL_LINE (gradient_tool->widget),
+ GIMP_TOOL_LINE_HANDLE_NONE);
+ break;
+ }
+}
+
+static void
+gimp_gradient_tool_editor_color_entry_color_clicked (GimpColorButton *button,
+ GimpGradientTool *gradient_tool)
+{
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+}
+
+static void
+gimp_gradient_tool_editor_color_entry_color_changed (GimpColorButton *button,
+ GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
+ gint selection;
+ GimpRGB color;
+ Direction direction;
+ GtkWidget *chain_button;
+ GimpGradientSegment *seg;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ gimp_color_button_get_color (button, &color);
+
+ direction =
+ GPOINTER_TO_INT (g_object_get_data (G_OBJECT (button),
+ "gimp-gradient-tool-editor-direction"));
+ chain_button = g_object_get_data (G_OBJECT (button),
+ "gimp-gradient-tool-editor-chain-button");
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ /* swap the endpoint handles, if necessary */
+ if (paint_options->gradient_options->gradient_reverse)
+ {
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ selection = GIMP_TOOL_LINE_HANDLE_END;
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ selection = GIMP_TOOL_LINE_HANDLE_START;
+ break;
+ }
+ }
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ seg->left_color = color;
+ seg->left_color_type = GIMP_GRADIENT_COLOR_FIXED;
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ seg->right_color = color;
+ seg->right_color_type = GIMP_GRADIENT_COLOR_FIXED;
+ break;
+
+ default:
+ if (direction == DIRECTION_LEFT ||
+ (chain_button &&
+ gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (chain_button))))
+ {
+ seg->right_color = color;
+ seg->right_color_type = GIMP_GRADIENT_COLOR_FIXED;
+ }
+
+ if (direction == DIRECTION_RIGHT ||
+ (chain_button &&
+ gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (chain_button))))
+ {
+ seg->next->left_color = color;
+ seg->next->left_color_type = GIMP_GRADIENT_COLOR_FIXED;
+ }
+ }
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_color_entry_color_response (GimpColorButton *button,
+ GimpColorDialogState state,
+ GimpGradientTool *gradient_tool)
+{
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_color_entry_type_changed (GtkComboBox *combo,
+ GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
+ gint selection;
+ gint color_type;
+ Direction direction;
+ GtkWidget *chain_button;
+ GimpGradientSegment *seg;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (! gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (combo), &color_type))
+ return;
+
+ direction =
+ GPOINTER_TO_INT (g_object_get_data (G_OBJECT (combo),
+ "gimp-gradient-tool-editor-direction"));
+ chain_button = g_object_get_data (G_OBJECT (combo),
+ "gimp-gradient-tool-editor-chain-button");
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ /* swap the endpoint handles, if necessary */
+ if (paint_options->gradient_options->gradient_reverse)
+ {
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ selection = GIMP_TOOL_LINE_HANDLE_END;
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ selection = GIMP_TOOL_LINE_HANDLE_START;
+ break;
+ }
+ }
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ seg->left_color_type = color_type;
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ seg->right_color_type = color_type;
+ break;
+
+ default:
+ if (direction == DIRECTION_LEFT ||
+ (chain_button &&
+ gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (chain_button))))
+ {
+ seg->right_color_type = color_type;
+ }
+
+ if (direction == DIRECTION_RIGHT ||
+ (chain_button &&
+ gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (chain_button))))
+ {
+ seg->next->left_color_type = color_type;
+ }
+ }
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_endpoint_se_value_changed (GimpSizeEntry *se,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+ gdouble x;
+ gdouble y;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (selection == GIMP_TOOL_LINE_HANDLE_NONE)
+ return;
+
+ x = gimp_size_entry_get_refval (se, 0);
+ y = gimp_size_entry_get_refval (se, 1);
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_block_handlers (gradient_tool);
+
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ g_object_set (gradient_tool->widget,
+ "x1", x,
+ "y1", y,
+ NULL);
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ g_object_set (gradient_tool->widget,
+ "x2", x,
+ "y2", y,
+ NULL);
+ break;
+
+ default:
+ gimp_assert_not_reached ();
+ }
+
+ gimp_gradient_tool_editor_unblock_handlers (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_stop_se_value_changed (GimpSizeEntry *se,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+ gdouble value;
+ GimpGradientSegment *seg;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (selection == GIMP_TOOL_LINE_HANDLE_NONE)
+ return;
+
+ value = gimp_size_entry_get_refval (se, 0) / 100.0;
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ gimp_gradient_segment_range_compress (gradient_tool->gradient,
+ seg, seg,
+ seg->left, value);
+ gimp_gradient_segment_range_compress (gradient_tool->gradient,
+ seg->next, seg->next,
+ value, seg->next->right);
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_stop_delete_clicked (GtkWidget *button,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ gimp_gradient_tool_editor_delete_stop (gradient_tool, selection);
+}
+
+static void
+gimp_gradient_tool_editor_midpoint_se_value_changed (GimpSizeEntry *se,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+ gdouble value;
+ GimpGradientSegment *seg;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (selection == GIMP_TOOL_LINE_HANDLE_NONE)
+ return;
+
+ value = gimp_size_entry_get_refval (se, 0) / 100.0;
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ seg->middle = value;
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_midpoint_type_changed (GtkComboBox *combo,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+ gint type;
+ GimpGradientSegment *seg;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (! gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (combo), &type))
+ return;
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ seg->type = type;
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_midpoint_color_changed (GtkComboBox *combo,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+ gint color;
+ GimpGradientSegment *seg;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (! gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (combo), &color))
+ return;
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ seg->color = color;
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static void
+gimp_gradient_tool_editor_midpoint_new_stop_clicked (GtkWidget *button,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+ gint stop;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ stop = gimp_gradient_tool_editor_midpoint_to_stop (gradient_tool, selection);
+
+ gimp_tool_line_set_selection (GIMP_TOOL_LINE (gradient_tool->widget), stop);
+}
+
+static void
+gimp_gradient_tool_editor_midpoint_center_clicked (GtkWidget *button,
+ GimpGradientTool *gradient_tool)
+{
+ gint selection;
+ GimpGradientSegment *seg;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ gimp_gradient_segment_range_recenter_handles (gradient_tool->gradient, seg, seg);
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static gboolean
+gimp_gradient_tool_editor_flush_idle (GimpGradientTool *gradient_tool)
+{
+ GimpDisplay *display = GIMP_TOOL (gradient_tool)->display;
+
+ gimp_image_flush (gimp_display_get_image (display));
+
+ gradient_tool->flush_idle_id = 0;
+
+ return G_SOURCE_REMOVE;
+}
+
+static gboolean
+gimp_gradient_tool_editor_is_gradient_editable (GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+
+ return ! options->modify_active ||
+ gimp_data_is_writable (GIMP_DATA (gradient_tool->gradient));
+}
+
+static gboolean
+gimp_gradient_tool_editor_handle_is_endpoint (GimpGradientTool *gradient_tool,
+ gint handle)
+{
+ return handle == GIMP_TOOL_LINE_HANDLE_START ||
+ handle == GIMP_TOOL_LINE_HANDLE_END;
+}
+
+static gboolean
+gimp_gradient_tool_editor_handle_is_stop (GimpGradientTool *gradient_tool,
+ gint handle)
+{
+ gint n_sliders;
+
+ gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget), &n_sliders);
+
+ return handle >= 0 && handle < n_sliders / 2;
+}
+
+static gboolean
+gimp_gradient_tool_editor_handle_is_midpoint (GimpGradientTool *gradient_tool,
+ gint handle)
+{
+ gint n_sliders;
+
+ gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget), &n_sliders);
+
+ return handle >= n_sliders / 2;
+}
+
+static GimpGradientSegment *
+gimp_gradient_tool_editor_handle_get_segment (GimpGradientTool *gradient_tool,
+ gint handle)
+{
+ switch (handle)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ return gradient_tool->gradient->segments;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ return gimp_gradient_segment_get_last (gradient_tool->gradient->segments);
+
+ default:
+ {
+ const GimpControllerSlider *sliders;
+ gint n_sliders;
+ gint seg_i;
+
+ sliders = gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget),
+ &n_sliders);
+
+ gimp_assert (handle >= 0 && handle < n_sliders);
+
+ seg_i = GPOINTER_TO_INT (sliders[handle].data);
+
+ return gimp_gradient_segment_get_nth (gradient_tool->gradient->segments,
+ seg_i);
+ }
+ }
+}
+
+static void
+gimp_gradient_tool_editor_block_handlers (GimpGradientTool *gradient_tool)
+{
+ gradient_tool->block_handlers_count++;
+}
+
+static void
+gimp_gradient_tool_editor_unblock_handlers (GimpGradientTool *gradient_tool)
+{
+ gimp_assert (gradient_tool->block_handlers_count > 0);
+
+ gradient_tool->block_handlers_count--;
+}
+
+static gboolean
+gimp_gradient_tool_editor_are_handlers_blocked (GimpGradientTool *gradient_tool)
+{
+ return gradient_tool->block_handlers_count > 0;
+}
+
+static void
+gimp_gradient_tool_editor_freeze_gradient (GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpGradient *custom;
+ GradientInfo *info;
+
+ gimp_gradient_tool_editor_block_handlers (gradient_tool);
+
+ custom = gimp_gradients_get_custom (GIMP_CONTEXT (options)->gimp);
+
+ if (gradient_tool->gradient == custom || options->modify_active)
+ {
+ gimp_assert (gimp_gradient_tool_editor_is_gradient_editable (gradient_tool));
+
+ gimp_data_freeze (GIMP_DATA (gradient_tool->gradient));
+ }
+ else
+ {
+ /* copy the active gradient to the custom gradient, and make the custom
+ * gradient active.
+ */
+ gimp_data_freeze (GIMP_DATA (custom));
+
+ gimp_data_copy (GIMP_DATA (custom), GIMP_DATA (gradient_tool->gradient));
+
+ gimp_context_set_gradient (GIMP_CONTEXT (options), custom);
+
+ gimp_assert (gradient_tool->gradient == custom);
+ gimp_assert (gimp_gradient_tool_editor_is_gradient_editable (gradient_tool));
+ }
+
+ if (gradient_tool->edit_count > 0)
+ {
+ info = gradient_tool->undo_stack->data;
+
+ if (! info->gradient)
+ {
+ info->gradient =
+ GIMP_GRADIENT (gimp_data_duplicate (GIMP_DATA (gradient_tool->gradient)));
+ }
+ }
+}
+
+static void
+gimp_gradient_tool_editor_thaw_gradient (GimpGradientTool *gradient_tool)
+{
+ gimp_data_thaw (GIMP_DATA (gradient_tool->gradient));
+
+ gimp_gradient_tool_editor_update_sliders (gradient_tool);
+ gimp_gradient_tool_editor_update_gui (gradient_tool);
+
+ gimp_gradient_tool_editor_unblock_handlers (gradient_tool);
+}
+
+static gint
+gimp_gradient_tool_editor_add_stop (GimpGradientTool *gradient_tool,
+ gdouble value)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
+ GimpGradientSegment *seg;
+ gint stop;
+ GradientInfo *info;
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ gimp_gradient_split_at (gradient_tool->gradient,
+ GIMP_CONTEXT (options), NULL, value,
+ paint_options->gradient_options->gradient_blend_color_space,
+ &seg, NULL);
+
+ stop =
+ gimp_gradient_segment_range_get_n_segments (gradient_tool->gradient,
+ gradient_tool->gradient->segments,
+ seg) - 1;
+
+ info = gradient_tool->undo_stack->data;
+ info->added_handle = stop;
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+
+ return stop;
+}
+
+static void
+gimp_gradient_tool_editor_delete_stop (GimpGradientTool *gradient_tool,
+ gint slider)
+{
+ GradientInfo *info;
+
+ gimp_assert (gimp_gradient_tool_editor_handle_is_stop (gradient_tool, slider));
+
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ info = gradient_tool->undo_stack->data;
+
+ if (info->added_handle == slider)
+ {
+ /* when removing a stop that was added as part of the current action,
+ * restore the original gradient at the beginning of the action, rather
+ * than deleting the stop from the current gradient, so that the affected
+ * midpoint returns to its state at the beginning of the action, instead
+ * of being reset.
+ *
+ * note that this assumes that the gradient hasn't changed in any other
+ * way during the action, which is ugly, but currently always true.
+ */
+
+ gimp_assert (info->gradient != NULL);
+
+ gimp_data_copy (GIMP_DATA (gradient_tool->gradient),
+ GIMP_DATA (info->gradient));
+
+ g_clear_object (&info->gradient);
+
+ info->added_handle = GIMP_TOOL_LINE_HANDLE_NONE;
+ }
+ else
+ {
+ GimpGradientSegment *seg;
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, slider);
+
+ gimp_gradient_segment_range_merge (gradient_tool->gradient,
+ seg, seg->next, NULL, NULL);
+
+ info->removed_handle = slider;
+ }
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+}
+
+static gint
+gimp_gradient_tool_editor_midpoint_to_stop (GimpGradientTool *gradient_tool,
+ gint slider)
+{
+ const GimpControllerSlider *sliders;
+
+ gimp_assert (gimp_gradient_tool_editor_handle_is_midpoint (gradient_tool, slider));
+
+ sliders = gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget),
+ NULL);
+
+ if (sliders[slider].value > sliders[slider].min + EPSILON &&
+ sliders[slider].value < sliders[slider].max - EPSILON)
+ {
+ const GimpGradientSegment *seg;
+ gint stop;
+ GradientInfo *info;
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, slider);
+
+ stop = gimp_gradient_tool_editor_add_stop (gradient_tool, seg->middle);
+
+ info = gradient_tool->undo_stack->data;
+ info->removed_handle = slider;
+
+ slider = stop;
+ }
+
+ return slider;
+}
+
+static void
+gimp_gradient_tool_editor_update_sliders (GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
+ gdouble offset = options->offset / 100.0;
+ gboolean editable;
+ GimpControllerSlider *sliders;
+ gint n_sliders;
+ gint n_segments;
+ GimpGradientSegment *seg;
+ GimpControllerSlider *slider;
+ gint i;
+
+ if (! gradient_tool->widget || options->instant)
+ return;
+
+ editable = gimp_gradient_tool_editor_is_gradient_editable (gradient_tool);
+
+ n_segments = gimp_gradient_segment_range_get_n_segments (
+ gradient_tool->gradient, gradient_tool->gradient->segments, NULL);
+
+ n_sliders = (n_segments - 1) + /* gradient stops, between each adjacent
+ * pair of segments */
+ (n_segments); /* midpoints, inside each segment */
+
+ sliders = g_new (GimpControllerSlider, n_sliders);
+
+ slider = sliders;
+
+ /* initialize the gradient-stop sliders */
+ for (seg = gradient_tool->gradient->segments, i = 0;
+ seg->next;
+ seg = seg->next, i++)
+ {
+ *slider = GIMP_CONTROLLER_SLIDER_DEFAULT;
+
+ slider->value = seg->right;
+ slider->min = seg->left;
+ slider->max = seg->next->right;
+
+ slider->movable = editable;
+ slider->removable = editable;
+
+ slider->data = GINT_TO_POINTER (i);
+
+ slider++;
+ }
+
+ /* initialize the midpoint sliders */
+ for (seg = gradient_tool->gradient->segments, i = 0;
+ seg;
+ seg = seg->next, i++)
+ {
+ *slider = GIMP_CONTROLLER_SLIDER_DEFAULT;
+
+ slider->value = seg->middle;
+ slider->min = seg->left;
+ slider->max = seg->right;
+
+ /* hide midpoints of zero-length segments, since they'd otherwise
+ * prevent the segment's endpoints from being selected
+ */
+ slider->visible = fabs (slider->max - slider->min) > EPSILON;
+ slider->movable = editable;
+
+ slider->autohide = TRUE;
+ slider->type = GIMP_HANDLE_FILLED_CIRCLE;
+ slider->size = 0.6;
+
+ slider->data = GINT_TO_POINTER (i);
+
+ slider++;
+ }
+
+ /* flip the slider limits and values, if necessary */
+ if (paint_options->gradient_options->gradient_reverse)
+ {
+ for (i = 0; i < n_sliders; i++)
+ {
+ gdouble temp;
+
+ sliders[i].value = 1.0 - sliders[i].value;
+ temp = sliders[i].min;
+ sliders[i].min = 1.0 - sliders[i].max;
+ sliders[i].max = 1.0 - temp;
+ }
+ }
+
+ /* adjust the sliders according to the offset */
+ for (i = 0; i < n_sliders; i++)
+ {
+ sliders[i].value = (1.0 - offset) * sliders[i].value + offset;
+ sliders[i].min = (1.0 - offset) * sliders[i].min + offset;
+ sliders[i].max = (1.0 - offset) * sliders[i].max + offset;
+ }
+
+ /* avoid updating the gradient in gimp_gradient_tool_editor_line_changed() */
+ gimp_gradient_tool_editor_block_handlers (gradient_tool);
+
+ gimp_tool_line_set_sliders (GIMP_TOOL_LINE (gradient_tool->widget),
+ sliders, n_sliders);
+
+ gimp_gradient_tool_editor_unblock_handlers (gradient_tool);
+
+ g_free (sliders);
+}
+
+static void
+gimp_gradient_tool_editor_purge_gradient_history (GSList **stack)
+{
+ GSList *link;
+
+ /* eliminate all history steps that modify the gradient */
+ while ((link = *stack))
+ {
+ GradientInfo *info = link->data;
+
+ if (info->gradient)
+ {
+ gimp_gradient_tool_editor_gradient_info_free (info);
+
+ *stack = g_slist_delete_link (*stack, link);
+ }
+ else
+ {
+ stack = &link->next;
+ }
+ }
+}
+
+static void
+gimp_gradient_tool_editor_purge_gradient (GimpGradientTool *gradient_tool)
+{
+ if (gradient_tool->widget)
+ {
+ gimp_gradient_tool_editor_update_sliders (gradient_tool);
+
+ gimp_tool_line_set_selection (GIMP_TOOL_LINE (gradient_tool->widget),
+ GIMP_TOOL_LINE_HANDLE_NONE);
+ }
+
+ gimp_gradient_tool_editor_purge_gradient_history (&gradient_tool->undo_stack);
+ gimp_gradient_tool_editor_purge_gradient_history (&gradient_tool->redo_stack);
+}
+
+static GtkWidget *
+gimp_gradient_tool_editor_color_entry_new (GimpGradientTool *gradient_tool,
+ const gchar *title,
+ Direction direction,
+ GtkWidget *chain_button,
+ GtkWidget **color_panel,
+ GtkWidget **type_combo)
+{
+ GimpContext *context = GIMP_CONTEXT (GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool));
+ GtkWidget *hbox;
+ GtkWidget *button;
+ GtkWidget *combo;
+ GimpRGB color = {};
+
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
+
+ /* the color panel */
+ *color_panel = button = gimp_color_panel_new (title, &color,
+ GIMP_COLOR_AREA_SMALL_CHECKS,
+ 24, 24);
+ gimp_color_button_set_update (GIMP_COLOR_BUTTON (button), TRUE);
+ gimp_color_panel_set_context (GIMP_COLOR_PANEL (button), context);
+ gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
+ gtk_widget_show (button);
+
+ g_object_set_data (G_OBJECT (button),
+ "gimp-gradient-tool-editor-direction",
+ GINT_TO_POINTER (direction));
+ g_object_set_data (G_OBJECT (button),
+ "gimp-gradient-tool-editor-chain-button",
+ chain_button);
+
+ g_signal_connect (button, "clicked",
+ G_CALLBACK (gimp_gradient_tool_editor_color_entry_color_clicked),
+ gradient_tool);
+ g_signal_connect (button, "color-changed",
+ G_CALLBACK (gimp_gradient_tool_editor_color_entry_color_changed),
+ gradient_tool);
+ g_signal_connect (button, "response",
+ G_CALLBACK (gimp_gradient_tool_editor_color_entry_color_response),
+ gradient_tool);
+
+ /* the color type combo */
+ *type_combo = combo = gimp_enum_combo_box_new (GIMP_TYPE_GRADIENT_COLOR);
+ gtk_box_pack_start (GTK_BOX (hbox), combo, FALSE, TRUE, 0);
+ gtk_widget_show (combo);
+
+ g_object_set_data (G_OBJECT (combo),
+ "gimp-gradient-tool-editor-direction",
+ GINT_TO_POINTER (direction));
+ g_object_set_data (G_OBJECT (combo),
+ "gimp-gradient-tool-editor-chain-button",
+ chain_button);
+
+ g_signal_connect (combo, "changed",
+ G_CALLBACK (gimp_gradient_tool_editor_color_entry_type_changed),
+ gradient_tool);
+
+ return hbox;
+}
+
+static void
+gimp_gradient_tool_editor_init_endpoint_gui (GimpGradientTool *gradient_tool)
+{
+ GimpDisplay *display = GIMP_TOOL (gradient_tool)->display;
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+ GimpImage *image = gimp_display_get_image (display);
+ gdouble xres;
+ gdouble yres;
+ GtkWidget *editor;
+ GtkWidget *table;
+ GtkWidget *label;
+ GtkWidget *spinbutton;
+ GtkWidget *se;
+ GtkWidget *hbox;
+ gint row = 0;
+
+ gimp_image_get_resolution (image, &xres, &yres);
+
+ /* the endpoint editor */
+ gradient_tool->endpoint_editor =
+ editor = gimp_editor_new ();
+ gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (gradient_tool->gui)),
+ editor, FALSE, TRUE, 0);
+
+ /* the main table */
+ table = gtk_table_new (1, 2, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 4);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 4);
+ gtk_box_pack_start (GTK_BOX (editor), table, FALSE, TRUE, 0);
+ gtk_widget_show (table);
+
+ /* the position labels */
+ label = gtk_label_new (_("X:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row, row + 1,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ label = gtk_label_new (_("Y:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row + 1, row + 2,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ /* the position size entry */
+ spinbutton = gimp_spin_button_new_with_range (0.0, 0.0, 1.0);
+ gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
+ gtk_entry_set_width_chars (GTK_ENTRY (spinbutton), 6);
+
+ gradient_tool->endpoint_se =
+ se = gimp_size_entry_new (1, GIMP_UNIT_PIXEL, "%a",
+ TRUE, TRUE, FALSE, 6,
+ GIMP_SIZE_ENTRY_UPDATE_SIZE);
+ gtk_table_set_row_spacings (GTK_TABLE (se), 4);
+ gtk_table_set_col_spacings (GTK_TABLE (se), 2);
+
+ gimp_size_entry_add_field (GIMP_SIZE_ENTRY (se),
+ GTK_SPIN_BUTTON (spinbutton), NULL);
+ gtk_table_attach_defaults (GTK_TABLE (se), spinbutton, 1, 2, 0, 1);
+ gtk_widget_show (spinbutton);
+
+ gtk_table_attach (GTK_TABLE (table), se, 1, 2, row, row + 2,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (se);
+
+ gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (se), shell->unit);
+
+ gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (se), 0, xres, FALSE);
+ gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (se), 1, yres, FALSE);
+
+ gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (se), 0,
+ -GIMP_MAX_IMAGE_SIZE,
+ GIMP_MAX_IMAGE_SIZE);
+ gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (se), 1,
+ -GIMP_MAX_IMAGE_SIZE,
+ GIMP_MAX_IMAGE_SIZE);
+
+ gimp_size_entry_set_size (GIMP_SIZE_ENTRY (se), 0,
+ 0, gimp_image_get_width (image));
+ gimp_size_entry_set_size (GIMP_SIZE_ENTRY (se), 1,
+ 0, gimp_image_get_height (image));
+
+ g_signal_connect (se, "value-changed",
+ G_CALLBACK (gimp_gradient_tool_editor_endpoint_se_value_changed),
+ gradient_tool);
+
+ row += 2;
+
+ /* the color label */
+ label = gtk_label_new (_("Color:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row, row + 1,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ /* the color entry */
+ hbox = gimp_gradient_tool_editor_color_entry_new (
+ gradient_tool, _("Change Endpoint Color"), DIRECTION_NONE, NULL,
+ &gradient_tool->endpoint_color_panel, &gradient_tool->endpoint_type_combo);
+ gtk_table_attach (GTK_TABLE (table), hbox, 1, 2, row, row + 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (hbox);
+
+ row++;
+}
+
+static void
+gimp_gradient_tool_editor_init_stop_gui (GimpGradientTool *gradient_tool)
+{
+ GtkWidget *editor;
+ GtkWidget *table;
+ GtkWidget *label;
+ GtkWidget *se;
+ GtkWidget *table2;
+ GtkWidget *button;
+ GtkWidget *hbox;
+ GtkWidget *separator;
+ gint row = 0;
+
+ /* the stop editor */
+ gradient_tool->stop_editor =
+ editor = gimp_editor_new ();
+ gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (gradient_tool->gui)),
+ editor, FALSE, TRUE, 0);
+
+ /* the main table */
+ table = gtk_table_new (1, 2, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 4);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 4);
+ gtk_box_pack_start (GTK_BOX (editor), table, FALSE, TRUE, 0);
+ gtk_widget_show (table);
+
+ /* the position label */
+ label = gtk_label_new (_("Position:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row, row + 1,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ /* the position size entry */
+ gradient_tool->stop_se =
+ se = gimp_size_entry_new (1, GIMP_UNIT_PERCENT, "%a",
+ FALSE, TRUE, FALSE, 6,
+ GIMP_SIZE_ENTRY_UPDATE_SIZE);
+ gimp_size_entry_show_unit_menu (GIMP_SIZE_ENTRY (se), FALSE);
+ gtk_table_attach (GTK_TABLE (table), se, 1, 2, row, row + 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (se);
+
+ g_signal_connect (se, "value-changed",
+ G_CALLBACK (gimp_gradient_tool_editor_stop_se_value_changed),
+ gradient_tool);
+
+ row++;
+
+ /* the color labels */
+ label = gtk_label_new (_("Left color:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row, row + 1,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ label = gtk_label_new (_("Right color:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row + 1, row + 2,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ /* the color entries table */
+ table2 = gtk_table_new (1, 2, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table2), 4);
+ gtk_table_set_col_spacings (GTK_TABLE (table2), 2);
+ gtk_table_attach (GTK_TABLE (table), table2, 1, 2, row, row + 2,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (table2);
+
+ /* the color entries chain button */
+ gradient_tool->stop_chain_button =
+ button = gimp_chain_button_new (GIMP_CHAIN_RIGHT);
+ gtk_table_attach (GTK_TABLE (table2), button, 1, 2, 0, 2,
+ GTK_SHRINK | GTK_FILL,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ 0, 0);
+ gtk_widget_show (button);
+
+ /* the color entries */
+ hbox = gimp_gradient_tool_editor_color_entry_new (
+ gradient_tool, _("Change Stop Color"), DIRECTION_LEFT, button,
+ &gradient_tool->stop_left_color_panel, &gradient_tool->stop_left_type_combo);
+ gtk_table_attach (GTK_TABLE (table2), hbox, 0, 1, 0, 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (hbox);
+
+ hbox = gimp_gradient_tool_editor_color_entry_new (
+ gradient_tool, _("Change Stop Color"), DIRECTION_RIGHT, button,
+ &gradient_tool->stop_right_color_panel, &gradient_tool->stop_right_type_combo);
+ gtk_table_attach (GTK_TABLE (table2), hbox, 0, 1, 1, 2,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (hbox);
+
+ row += 2;
+
+ /* the action buttons separator */
+ separator = gtk_hseparator_new ();
+ gtk_table_attach (GTK_TABLE (table), separator, 0, 2, row, row + 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (separator);
+
+ row++;
+
+ /* the delete button */
+ gimp_editor_add_button (GIMP_EDITOR (editor),
+ GIMP_ICON_EDIT_DELETE, _("Delete stop"),
+ NULL,
+ G_CALLBACK (gimp_gradient_tool_editor_stop_delete_clicked),
+ NULL, gradient_tool);
+}
+
+static void
+gimp_gradient_tool_editor_init_midpoint_gui (GimpGradientTool *gradient_tool)
+{
+ GtkWidget *editor;
+ GtkWidget *table;
+ GtkWidget *label;
+ GtkWidget *se;
+ GtkWidget *combo;
+ GtkWidget *separator;
+ gint row = 0;
+
+ /* the stop editor */
+ gradient_tool->midpoint_editor =
+ editor = gimp_editor_new ();
+ gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (gradient_tool->gui)),
+ editor, FALSE, TRUE, 0);
+
+ /* the main table */
+ table = gtk_table_new (1, 2, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 4);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 4);
+ gtk_box_pack_start (GTK_BOX (editor), table, FALSE, TRUE, 0);
+ gtk_widget_show (table);
+
+ /* the position label */
+ label = gtk_label_new (_("Position:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row, row + 1,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ /* the position size entry */
+ gradient_tool->midpoint_se =
+ se = gimp_size_entry_new (1, GIMP_UNIT_PERCENT, "%a",
+ FALSE, TRUE, FALSE, 6,
+ GIMP_SIZE_ENTRY_UPDATE_SIZE);
+ gimp_size_entry_show_unit_menu (GIMP_SIZE_ENTRY (se), FALSE);
+ gtk_table_attach (GTK_TABLE (table), se, 1, 2, row, row + 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (se);
+
+ g_signal_connect (se, "value-changed",
+ G_CALLBACK (gimp_gradient_tool_editor_midpoint_se_value_changed),
+ gradient_tool);
+
+ row++;
+
+ /* the type label */
+ label = gtk_label_new (_("Blending:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row, row + 1,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ /* the type combo */
+ gradient_tool->midpoint_type_combo =
+ combo = gimp_enum_combo_box_new (GIMP_TYPE_GRADIENT_SEGMENT_TYPE);
+ gtk_table_attach (GTK_TABLE (table), combo, 1, 2, row, row + 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (combo);
+
+ g_signal_connect (combo, "changed",
+ G_CALLBACK (gimp_gradient_tool_editor_midpoint_type_changed),
+ gradient_tool);
+
+ row++;
+
+ /* the color label */
+ label = gtk_label_new (_("Coloring:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_table_attach (GTK_TABLE (table), label, 0, 1, row, row + 1,
+ GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 0);
+ gtk_widget_show (label);
+
+ /* the color combo */
+ gradient_tool->midpoint_color_combo =
+ combo = gimp_enum_combo_box_new (GIMP_TYPE_GRADIENT_SEGMENT_COLOR);
+ gtk_table_attach (GTK_TABLE (table), combo, 1, 2, row, row + 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (combo);
+
+ g_signal_connect (combo, "changed",
+ G_CALLBACK (gimp_gradient_tool_editor_midpoint_color_changed),
+ gradient_tool);
+
+ row++;
+
+ /* the action buttons separator */
+ separator = gtk_hseparator_new ();
+ gtk_table_attach (GTK_TABLE (table), separator, 0, 2, row, row + 1,
+ GTK_SHRINK | GTK_FILL | GTK_EXPAND,
+ GTK_SHRINK | GTK_FILL,
+ 0, 0);
+ gtk_widget_show (separator);
+
+ row++;
+
+ /* the new stop button */
+ gradient_tool->midpoint_new_stop_button =
+ gimp_editor_add_button (GIMP_EDITOR (editor),
+ GIMP_ICON_DOCUMENT_NEW, _("New stop at midpoint"),
+ NULL,
+ G_CALLBACK (gimp_gradient_tool_editor_midpoint_new_stop_clicked),
+ NULL, gradient_tool);
+
+ /* the center button */
+ gradient_tool->midpoint_center_button =
+ gimp_editor_add_button (GIMP_EDITOR (editor),
+ GIMP_ICON_CENTER_HORIZONTAL, _("Center midpoint"),
+ NULL,
+ G_CALLBACK (gimp_gradient_tool_editor_midpoint_center_clicked),
+ NULL, gradient_tool);
+}
+
+static void
+gimp_gradient_tool_editor_update_endpoint_gui (GimpGradientTool *gradient_tool,
+ gint selection)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
+ GimpContext *context = GIMP_CONTEXT (options);
+ gboolean editable;
+ GimpGradientSegment *seg;
+ const gchar *title;
+ gdouble x;
+ gdouble y;
+ GimpRGB color;
+ GimpGradientColor color_type;
+
+ editable = gimp_gradient_tool_editor_is_gradient_editable (gradient_tool);
+
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ g_object_get (gradient_tool->widget,
+ "x1", &x,
+ "y1", &y,
+ NULL);
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ g_object_get (gradient_tool->widget,
+ "x2", &x,
+ "y2", &y,
+ NULL);
+ break;
+
+ default:
+ gimp_assert_not_reached ();
+ }
+
+ /* swap the endpoint handles, if necessary */
+ if (paint_options->gradient_options->gradient_reverse)
+ {
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ selection = GIMP_TOOL_LINE_HANDLE_END;
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ selection = GIMP_TOOL_LINE_HANDLE_START;
+ break;
+ }
+ }
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ title = _("Start Endpoint");
+
+ gimp_gradient_segment_get_left_flat_color (gradient_tool->gradient, context,
+ seg, &color);
+ color_type = seg->left_color_type;
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ title = _("End Endpoint");
+
+ gimp_gradient_segment_get_right_flat_color (gradient_tool->gradient, context,
+ seg, &color);
+ color_type = seg->right_color_type;
+ break;
+
+ default:
+ gimp_assert_not_reached ();
+ }
+
+ gimp_tool_gui_set_title (gradient_tool->gui, title);
+
+ gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (gradient_tool->endpoint_se), 0, x);
+ gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (gradient_tool->endpoint_se), 1, y);
+
+ gimp_color_button_set_color (
+ GIMP_COLOR_BUTTON (gradient_tool->endpoint_color_panel), &color);
+ gimp_int_combo_box_set_active (
+ GIMP_INT_COMBO_BOX (gradient_tool->endpoint_type_combo), color_type);
+
+ gtk_widget_set_sensitive (gradient_tool->endpoint_color_panel, editable);
+ gtk_widget_set_sensitive (gradient_tool->endpoint_type_combo, editable);
+
+ gtk_widget_show (gradient_tool->endpoint_editor);
+}
+
+static void
+gimp_gradient_tool_editor_update_stop_gui (GimpGradientTool *gradient_tool,
+ gint selection)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpContext *context = GIMP_CONTEXT (options);
+ gboolean editable;
+ GimpGradientSegment *seg;
+ gint index;
+ gchar *title;
+ gdouble min;
+ gdouble max;
+ gdouble value;
+ GimpRGB left_color;
+ GimpGradientColor left_color_type;
+ GimpRGB right_color;
+ GimpGradientColor right_color_type;
+
+ editable = gimp_gradient_tool_editor_is_gradient_editable (gradient_tool);
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ index = GPOINTER_TO_INT (
+ gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget),
+ NULL)[selection].data);
+
+ title = g_strdup_printf (_("Stop %d"), index + 1);
+
+ min = seg->left;
+ max = seg->next->right;
+ value = seg->right;
+
+ gimp_gradient_segment_get_right_flat_color (gradient_tool->gradient, context,
+ seg, &left_color);
+ left_color_type = seg->right_color_type;
+
+ gimp_gradient_segment_get_left_flat_color (gradient_tool->gradient, context,
+ seg->next, &right_color);
+ right_color_type = seg->next->left_color_type;
+
+ gimp_tool_gui_set_title (gradient_tool->gui, title);
+
+ gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (gradient_tool->stop_se),
+ 0, 100.0 * min, 100.0 * max);
+ gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (gradient_tool->stop_se),
+ 0, 100.0 * value);
+
+ gimp_color_button_set_color (
+ GIMP_COLOR_BUTTON (gradient_tool->stop_left_color_panel), &left_color);
+ gimp_int_combo_box_set_active (
+ GIMP_INT_COMBO_BOX (gradient_tool->stop_left_type_combo), left_color_type);
+
+ gimp_color_button_set_color (
+ GIMP_COLOR_BUTTON (gradient_tool->stop_right_color_panel), &right_color);
+ gimp_int_combo_box_set_active (
+ GIMP_INT_COMBO_BOX (gradient_tool->stop_right_type_combo), right_color_type);
+
+ gtk_widget_set_sensitive (gradient_tool->stop_se, editable);
+ gtk_widget_set_sensitive (gradient_tool->stop_left_color_panel, editable);
+ gtk_widget_set_sensitive (gradient_tool->stop_left_type_combo, editable);
+ gtk_widget_set_sensitive (gradient_tool->stop_right_color_panel, editable);
+ gtk_widget_set_sensitive (gradient_tool->stop_right_type_combo, editable);
+ gtk_widget_set_sensitive (gradient_tool->stop_chain_button, editable);
+ gtk_widget_set_sensitive (
+ GTK_WIDGET (gimp_editor_get_button_box (GIMP_EDITOR (gradient_tool->stop_editor))),
+ editable);
+
+ g_free (title);
+
+ gtk_widget_show (gradient_tool->stop_editor);
+}
+
+static void
+gimp_gradient_tool_editor_update_midpoint_gui (GimpGradientTool *gradient_tool,
+ gint selection)
+{
+ gboolean editable;
+ const GimpGradientSegment *seg;
+ gint index;
+ gchar *title;
+ gdouble min;
+ gdouble max;
+ gdouble value;
+ GimpGradientSegmentType type;
+ GimpGradientSegmentColor color;
+
+ editable = gimp_gradient_tool_editor_is_gradient_editable (gradient_tool);
+
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, selection);
+
+ index = GPOINTER_TO_INT (
+ gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget),
+ NULL)[selection].data);
+
+ title = g_strdup_printf (_("Midpoint %d"), index + 1);
+
+ min = seg->left;
+ max = seg->right;
+ value = seg->middle;
+ type = seg->type;
+ color = seg->color;
+
+ gimp_tool_gui_set_title (gradient_tool->gui, title);
+
+ gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (gradient_tool->midpoint_se),
+ 0, 100.0 * min, 100.0 * max);
+ gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (gradient_tool->midpoint_se),
+ 0, 100.0 * value);
+
+ gimp_int_combo_box_set_active (
+ GIMP_INT_COMBO_BOX (gradient_tool->midpoint_type_combo), type);
+
+ gimp_int_combo_box_set_active (
+ GIMP_INT_COMBO_BOX (gradient_tool->midpoint_color_combo), color);
+
+ gtk_widget_set_sensitive (gradient_tool->midpoint_new_stop_button,
+ value > min + EPSILON && value < max - EPSILON);
+ gtk_widget_set_sensitive (gradient_tool->midpoint_center_button,
+ fabs (value - (min + max) / 2.0) > EPSILON);
+
+ gtk_widget_set_sensitive (gradient_tool->midpoint_se, editable);
+ gtk_widget_set_sensitive (gradient_tool->midpoint_type_combo, editable);
+ gtk_widget_set_sensitive (gradient_tool->midpoint_color_combo, editable);
+ gtk_widget_set_sensitive (
+ GTK_WIDGET (gimp_editor_get_button_box (GIMP_EDITOR (gradient_tool->midpoint_editor))),
+ editable);
+
+ g_free (title);
+
+ gtk_widget_show (gradient_tool->midpoint_editor);
+}
+
+static void
+gimp_gradient_tool_editor_update_gui (GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+
+ if (gradient_tool->gradient && gradient_tool->widget && ! options->instant)
+ {
+ gint selection;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (selection != GIMP_TOOL_LINE_HANDLE_NONE)
+ {
+ if (! gradient_tool->gui)
+ {
+ GimpDisplayShell *shell;
+
+ shell = gimp_tool_widget_get_shell (gradient_tool->widget);
+
+ gradient_tool->gui =
+ gimp_tool_gui_new (GIMP_TOOL (gradient_tool)->tool_info,
+ NULL, NULL, NULL, NULL,
+ gtk_widget_get_screen (GTK_WIDGET (shell)),
+ gimp_widget_get_monitor (GTK_WIDGET (shell)),
+ TRUE,
+
+ _("_Close"), GTK_RESPONSE_CLOSE,
+
+ NULL);
+
+ gimp_tool_gui_set_shell (gradient_tool->gui, shell);
+ gimp_tool_gui_set_viewable (gradient_tool->gui,
+ GIMP_VIEWABLE (gradient_tool->gradient));
+ gimp_tool_gui_set_auto_overlay (gradient_tool->gui, TRUE);
+
+ g_signal_connect (gradient_tool->gui, "response",
+ G_CALLBACK (gimp_gradient_tool_editor_gui_response),
+ gradient_tool);
+
+ gimp_gradient_tool_editor_init_endpoint_gui (gradient_tool);
+ gimp_gradient_tool_editor_init_stop_gui (gradient_tool);
+ gimp_gradient_tool_editor_init_midpoint_gui (gradient_tool);
+ }
+
+ gimp_gradient_tool_editor_block_handlers (gradient_tool);
+
+ if (gimp_gradient_tool_editor_handle_is_endpoint (gradient_tool, selection))
+ gimp_gradient_tool_editor_update_endpoint_gui (gradient_tool, selection);
+ else
+ gtk_widget_hide (gradient_tool->endpoint_editor);
+
+ if (gimp_gradient_tool_editor_handle_is_stop (gradient_tool, selection))
+ gimp_gradient_tool_editor_update_stop_gui (gradient_tool, selection);
+ else
+ gtk_widget_hide (gradient_tool->stop_editor);
+
+ if (gimp_gradient_tool_editor_handle_is_midpoint (gradient_tool, selection))
+ gimp_gradient_tool_editor_update_midpoint_gui (gradient_tool, selection);
+ else
+ gtk_widget_hide (gradient_tool->midpoint_editor);
+
+ gimp_gradient_tool_editor_unblock_handlers (gradient_tool);
+
+ gimp_tool_gui_show (gradient_tool->gui);
+
+ return;
+ }
+ }
+
+ if (gradient_tool->gui)
+ gimp_tool_gui_hide (gradient_tool->gui);
+}
+
+static GradientInfo *
+gimp_gradient_tool_editor_gradient_info_new (GimpGradientTool *gradient_tool)
+{
+ GradientInfo *info = g_slice_new (GradientInfo);
+
+ info->start_x = gradient_tool->start_x;
+ info->start_y = gradient_tool->start_y;
+ info->end_x = gradient_tool->end_x;
+ info->end_y = gradient_tool->end_y;
+
+ info->gradient = NULL;
+
+ info->added_handle = GIMP_TOOL_LINE_HANDLE_NONE;
+ info->removed_handle = GIMP_TOOL_LINE_HANDLE_NONE;
+ info->selected_handle = GIMP_TOOL_LINE_HANDLE_NONE;
+
+ return info;
+}
+
+static void
+gimp_gradient_tool_editor_gradient_info_free (GradientInfo *info)
+{
+ if (info->gradient)
+ g_object_unref (info->gradient);
+
+ g_slice_free (GradientInfo, info);
+}
+
+static void
+gimp_gradient_tool_editor_gradient_info_apply (GimpGradientTool *gradient_tool,
+ const GradientInfo *info,
+ gboolean set_selection)
+{
+ gint selection;
+
+ gimp_assert (gradient_tool->widget != NULL);
+ gimp_assert (gradient_tool->gradient != NULL);
+
+ /* pick the handle to select */
+ if (info->gradient)
+ {
+ if (info->removed_handle != GIMP_TOOL_LINE_HANDLE_NONE)
+ {
+ /* we're undoing a stop-deletion or midpoint-to-stop operation;
+ * select the removed handle
+ */
+ selection = info->removed_handle;
+ }
+ else if (info->added_handle != GIMP_TOOL_LINE_HANDLE_NONE)
+ {
+ /* we're undoing a stop addition operation */
+ gimp_assert (gimp_gradient_tool_editor_handle_is_stop (gradient_tool,
+ info->added_handle));
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ /* if the selected handle is a stop... */
+ if (gimp_gradient_tool_editor_handle_is_stop (gradient_tool, selection))
+ {
+ /* if the added handle is selected, clear the selection */
+ if (selection == info->added_handle)
+ selection = GIMP_TOOL_LINE_HANDLE_NONE;
+ /* otherwise, keep the currently selected stop, possibly
+ * adjusting its handle index
+ */
+ else if (selection > info->added_handle)
+ selection--;
+ }
+ /* otherwise, if the selected handle is a midpoint... */
+ else if (gimp_gradient_tool_editor_handle_is_midpoint (gradient_tool, selection))
+ {
+ const GimpControllerSlider *sliders;
+ gint seg_i;
+
+ sliders =
+ gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget),
+ NULL);
+
+ seg_i = GPOINTER_TO_INT (sliders[selection].data);
+
+ /* if the midpoint belongs to one of the two segments incident to
+ * the added stop, clear the selection
+ */
+ if (seg_i == info->added_handle ||
+ seg_i == info->added_handle + 1)
+ {
+ selection = GIMP_TOOL_LINE_HANDLE_NONE;
+ }
+ /* otherwise, keep the currently selected stop, adjusting its
+ * handle index
+ */
+ else
+ {
+ /* midpoint handles follow stop handles; since we removed a
+ * stop, we must decrement the handle index
+ */
+ selection--;
+
+ if (seg_i > info->added_handle)
+ selection--;
+ }
+ }
+ /* otherwise, don't change the selection */
+ else
+ {
+ set_selection = FALSE;
+ }
+ }
+ else if (info->selected_handle != GIMP_TOOL_LINE_HANDLE_NONE)
+ {
+ /* we're undoing a property change operation; select the handle
+ * corresponding to the affected object
+ */
+ selection = info->selected_handle;
+ }
+ else
+ {
+ /* something went wrong... */
+ g_warn_if_reached ();
+
+ set_selection = FALSE;
+ }
+ }
+ else if ((info->start_x != gradient_tool->start_x ||
+ info->start_y != gradient_tool->start_y) &&
+ (info->end_x == gradient_tool->end_x &&
+ info->end_y == gradient_tool->end_y))
+ {
+ /* we're undoing a start-endpoint move operation; select the start
+ * endpoint
+ */
+ selection = GIMP_TOOL_LINE_HANDLE_START;
+ }
+ else if ((info->end_x != gradient_tool->end_x ||
+ info->end_y != gradient_tool->end_y) &&
+ (info->start_x == gradient_tool->start_x &&
+ info->start_y == gradient_tool->start_y))
+
+ {
+ /* we're undoing am end-endpoint move operation; select the end
+ * endpoint
+ */
+ selection = GIMP_TOOL_LINE_HANDLE_END;
+ }
+ else
+ {
+ /* we're undoing a line move operation; don't change the selection */
+ set_selection = FALSE;
+ }
+
+ gimp_gradient_tool_editor_block_handlers (gradient_tool);
+
+ g_object_set (gradient_tool->widget,
+ "x1", info->start_x,
+ "y1", info->start_y,
+ "x2", info->end_x,
+ "y2", info->end_y,
+ NULL);
+
+ if (info->gradient)
+ {
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ gimp_data_copy (GIMP_DATA (gradient_tool->gradient),
+ GIMP_DATA (info->gradient));
+
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ }
+
+ if (set_selection)
+ {
+ gimp_tool_line_set_selection (GIMP_TOOL_LINE (gradient_tool->widget),
+ selection);
+ }
+
+ gimp_gradient_tool_editor_update_gui (gradient_tool);
+
+ gimp_gradient_tool_editor_unblock_handlers (gradient_tool);
+}
+
+static gboolean
+gimp_gradient_tool_editor_gradient_info_is_trivial (GimpGradientTool *gradient_tool,
+ const GradientInfo *info)
+{
+ const GimpGradientSegment *seg1;
+ const GimpGradientSegment *seg2;
+
+ if (info->start_x != gradient_tool->start_x ||
+ info->start_y != gradient_tool->start_y ||
+ info->end_x != gradient_tool->end_x ||
+ info->end_y != gradient_tool->end_y)
+ {
+ return FALSE;
+ }
+
+ if (info->gradient)
+ {
+ for (seg1 = info->gradient->segments, seg2 = gradient_tool->gradient->segments;
+ seg1 && seg2;
+ seg1 = seg1->next, seg2 = seg2->next)
+ {
+ if (memcmp (seg1, seg2, G_STRUCT_OFFSET (GimpGradientSegment, prev)))
+ return FALSE;
+ }
+
+ if (seg1 || seg2)
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/* public functions */
+
+void
+gimp_gradient_tool_editor_options_notify (GimpGradientTool *gradient_tool,
+ GimpToolOptions *options,
+ const GParamSpec *pspec)
+{
+ if (! strcmp (pspec->name, "modify-active"))
+ {
+ gimp_gradient_tool_editor_update_sliders (gradient_tool);
+ gimp_gradient_tool_editor_update_gui (gradient_tool);
+ }
+ else if (! strcmp (pspec->name, "gradient-reverse"))
+ {
+ gimp_gradient_tool_editor_update_sliders (gradient_tool);
+
+ /* if an endpoint is selected, swap the selected endpoint */
+ if (gradient_tool->widget)
+ {
+ gint selection;
+
+ selection =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ switch (selection)
+ {
+ case GIMP_TOOL_LINE_HANDLE_START:
+ gimp_tool_line_set_selection (GIMP_TOOL_LINE (gradient_tool->widget),
+ GIMP_TOOL_LINE_HANDLE_END);
+ break;
+
+ case GIMP_TOOL_LINE_HANDLE_END:
+ gimp_tool_line_set_selection (GIMP_TOOL_LINE (gradient_tool->widget),
+ GIMP_TOOL_LINE_HANDLE_START);
+ break;
+ }
+ }
+ }
+ else if (gradient_tool->render_node &&
+ gegl_node_find_property (gradient_tool->render_node, pspec->name))
+ {
+ gimp_gradient_tool_editor_update_sliders (gradient_tool);
+ }
+}
+
+void
+gimp_gradient_tool_editor_start (GimpGradientTool *gradient_tool)
+{
+ g_signal_connect (gradient_tool->widget, "can-add-slider",
+ G_CALLBACK (gimp_gradient_tool_editor_line_can_add_slider),
+ gradient_tool);
+ g_signal_connect (gradient_tool->widget, "add-slider",
+ G_CALLBACK (gimp_gradient_tool_editor_line_add_slider),
+ gradient_tool);
+ g_signal_connect (gradient_tool->widget, "prepare-to-remove-slider",
+ G_CALLBACK (gimp_gradient_tool_editor_line_prepare_to_remove_slider),
+ gradient_tool);
+ g_signal_connect (gradient_tool->widget, "remove-slider",
+ G_CALLBACK (gimp_gradient_tool_editor_line_remove_slider),
+ gradient_tool);
+ g_signal_connect (gradient_tool->widget, "selection-changed",
+ G_CALLBACK (gimp_gradient_tool_editor_line_selection_changed),
+ gradient_tool);
+ g_signal_connect (gradient_tool->widget, "handle-clicked",
+ G_CALLBACK (gimp_gradient_tool_editor_line_handle_clicked),
+ gradient_tool);
+}
+
+void
+gimp_gradient_tool_editor_halt (GimpGradientTool *gradient_tool)
+{
+ g_clear_object (&gradient_tool->gui);
+
+ gradient_tool->edit_count = 0;
+
+ if (gradient_tool->undo_stack)
+ {
+ g_slist_free_full (gradient_tool->undo_stack,
+ (GDestroyNotify) gimp_gradient_tool_editor_gradient_info_free);
+ gradient_tool->undo_stack = NULL;
+ }
+
+ if (gradient_tool->redo_stack)
+ {
+ g_slist_free_full (gradient_tool->redo_stack,
+ (GDestroyNotify) gimp_gradient_tool_editor_gradient_info_free);
+ gradient_tool->redo_stack = NULL;
+ }
+
+ if (gradient_tool->flush_idle_id)
+ {
+ g_source_remove (gradient_tool->flush_idle_id);
+ gradient_tool->flush_idle_id = 0;
+ }
+}
+
+gboolean
+gimp_gradient_tool_editor_line_changed (GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
+ gdouble offset = options->offset / 100.0;
+ const GimpControllerSlider *sliders;
+ gint n_sliders;
+ gint i;
+ GimpGradientSegment *seg;
+ gboolean changed = FALSE;
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return FALSE;
+
+ if (! gradient_tool->gradient || offset == 1.0)
+ return FALSE;
+
+ sliders = gimp_tool_line_get_sliders (GIMP_TOOL_LINE (gradient_tool->widget),
+ &n_sliders);
+
+ if (n_sliders == 0)
+ return FALSE;
+
+ /* update the midpoints first, since moving the gradient stops may change the
+ * gradient's midpoints w.r.t. the sliders, but not the other way around.
+ */
+ for (seg = gradient_tool->gradient->segments, i = n_sliders / 2;
+ seg;
+ seg = seg->next, i++)
+ {
+ gdouble value;
+
+ value = sliders[i].value;
+
+ /* adjust slider value according to the offset */
+ value = (value - offset) / (1.0 - offset);
+
+ /* flip the slider value, if necessary */
+ if (paint_options->gradient_options->gradient_reverse)
+ value = 1.0 - value;
+
+ if (fabs (value - seg->middle) > EPSILON)
+ {
+ if (! changed)
+ {
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ /* refetch the segment, since the gradient might have changed */
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, i);
+
+ changed = TRUE;
+ }
+
+ seg->middle = value;
+ }
+ }
+
+ /* update the gradient stops */
+ for (seg = gradient_tool->gradient->segments, i = 0;
+ seg->next;
+ seg = seg->next, i++)
+ {
+ gdouble value;
+
+ value = sliders[i].value;
+
+ /* adjust slider value according to the offset */
+ value = (value - offset) / (1.0 - offset);
+
+ /* flip the slider value, if necessary */
+ if (paint_options->gradient_options->gradient_reverse)
+ value = 1.0 - value;
+
+ if (fabs (value - seg->right) > EPSILON)
+ {
+ if (! changed)
+ {
+ gimp_gradient_tool_editor_start_edit (gradient_tool);
+ gimp_gradient_tool_editor_freeze_gradient (gradient_tool);
+
+ /* refetch the segment, since the gradient might have changed */
+ seg = gimp_gradient_tool_editor_handle_get_segment (gradient_tool, i);
+
+ changed = TRUE;
+ }
+
+ gimp_gradient_segment_range_compress (gradient_tool->gradient,
+ seg, seg,
+ seg->left, value);
+ gimp_gradient_segment_range_compress (gradient_tool->gradient,
+ seg->next, seg->next,
+ value, seg->next->right);
+ }
+ }
+
+ if (changed)
+ {
+ gimp_gradient_tool_editor_thaw_gradient (gradient_tool);
+ gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
+ }
+
+ gimp_gradient_tool_editor_update_gui (gradient_tool);
+
+ return changed;
+}
+
+void
+gimp_gradient_tool_editor_fg_bg_changed (GimpGradientTool *gradient_tool)
+{
+ gimp_gradient_tool_editor_update_gui (gradient_tool);
+}
+
+void
+gimp_gradient_tool_editor_gradient_dirty (GimpGradientTool *gradient_tool)
+{
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ gimp_gradient_tool_editor_purge_gradient (gradient_tool);
+}
+
+void
+gimp_gradient_tool_editor_gradient_changed (GimpGradientTool *gradient_tool)
+{
+ GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
+ GimpContext *context = GIMP_CONTEXT (options);
+
+ if (options->modify_active_frame)
+ {
+ gtk_widget_set_sensitive (options->modify_active_frame,
+ gradient_tool->gradient !=
+ gimp_gradients_get_custom (context->gimp));
+ }
+
+ if (options->modify_active_hint)
+ {
+ gtk_widget_set_visible (options->modify_active_hint,
+ gradient_tool->gradient &&
+ ! gimp_data_is_writable (GIMP_DATA (gradient_tool->gradient)));
+ }
+
+ if (gimp_gradient_tool_editor_are_handlers_blocked (gradient_tool))
+ return;
+
+ gimp_gradient_tool_editor_purge_gradient (gradient_tool);
+}
+
+const gchar *
+gimp_gradient_tool_editor_can_undo (GimpGradientTool *gradient_tool)
+{
+ if (! gradient_tool->undo_stack || gradient_tool->edit_count > 0)
+ return NULL;
+
+ return _("Gradient Step");
+}
+
+const gchar *
+gimp_gradient_tool_editor_can_redo (GimpGradientTool *gradient_tool)
+{
+ if (! gradient_tool->redo_stack || gradient_tool->edit_count > 0)
+ return NULL;
+
+ return _("Gradient Step");
+}
+
+gboolean
+gimp_gradient_tool_editor_undo (GimpGradientTool *gradient_tool)
+{
+ GimpTool *tool = GIMP_TOOL (gradient_tool);
+ GradientInfo *info;
+ GradientInfo *new_info;
+
+ gimp_assert (gradient_tool->undo_stack != NULL);
+ gimp_assert (gradient_tool->edit_count == 0);
+
+ info = gradient_tool->undo_stack->data;
+
+ new_info = gimp_gradient_tool_editor_gradient_info_new (gradient_tool);
+
+ if (info->gradient)
+ {
+ new_info->gradient =
+ GIMP_GRADIENT (gimp_data_duplicate (GIMP_DATA (gradient_tool->gradient)));
+
+ /* swap the added and removed handles, so that gradient_info_apply() does
+ * the right thing on redo
+ */
+ new_info->added_handle = info->removed_handle;
+ new_info->removed_handle = info->added_handle;
+ new_info->selected_handle = info->selected_handle;
+ }
+
+ gradient_tool->undo_stack = g_slist_remove (gradient_tool->undo_stack, info);
+ gradient_tool->redo_stack = g_slist_prepend (gradient_tool->redo_stack, new_info);
+
+ gimp_gradient_tool_editor_gradient_info_apply (gradient_tool, info, TRUE);
+ gimp_gradient_tool_editor_gradient_info_free (info);
+
+ /* the initial state of the gradient tool is not useful; we might as well halt */
+ if (! gradient_tool->undo_stack)
+ gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
+
+ return TRUE;
+}
+
+gboolean
+gimp_gradient_tool_editor_redo (GimpGradientTool *gradient_tool)
+{
+ GradientInfo *info;
+ GradientInfo *new_info;
+
+ gimp_assert (gradient_tool->redo_stack != NULL);
+ gimp_assert (gradient_tool->edit_count == 0);
+
+ info = gradient_tool->redo_stack->data;
+
+ new_info = gimp_gradient_tool_editor_gradient_info_new (gradient_tool);
+
+ if (info->gradient)
+ {
+ new_info->gradient =
+ GIMP_GRADIENT (gimp_data_duplicate (GIMP_DATA (gradient_tool->gradient)));
+
+ /* swap the added and removed handles, so that gradient_info_apply() does
+ * the right thing on undo
+ */
+ new_info->added_handle = info->removed_handle;
+ new_info->removed_handle = info->added_handle;
+ new_info->selected_handle = info->selected_handle;
+ }
+
+ gradient_tool->redo_stack = g_slist_remove (gradient_tool->redo_stack, info);
+ gradient_tool->undo_stack = g_slist_prepend (gradient_tool->undo_stack, new_info);
+
+ gimp_gradient_tool_editor_gradient_info_apply (gradient_tool, info, TRUE);
+ gimp_gradient_tool_editor_gradient_info_free (info);
+
+ return TRUE;
+}
+
+void
+gimp_gradient_tool_editor_start_edit (GimpGradientTool *gradient_tool)
+{
+ if (gradient_tool->edit_count++ == 0)
+ {
+ GradientInfo *info;
+
+ info = gimp_gradient_tool_editor_gradient_info_new (gradient_tool);
+
+ gradient_tool->undo_stack = g_slist_prepend (gradient_tool->undo_stack, info);
+
+ /* update the undo actions / menu items */
+ if (! gradient_tool->flush_idle_id)
+ {
+ gradient_tool->flush_idle_id =
+ g_idle_add ((GSourceFunc) gimp_gradient_tool_editor_flush_idle,
+ gradient_tool);
+ }
+ }
+}
+
+void
+gimp_gradient_tool_editor_end_edit (GimpGradientTool *gradient_tool,
+ gboolean cancel)
+{
+ /* can happen when halting using esc */
+ if (gradient_tool->edit_count == 0)
+ return;
+
+ if (--gradient_tool->edit_count == 0)
+ {
+ GradientInfo *info = gradient_tool->undo_stack->data;
+
+ info->selected_handle =
+ gimp_tool_line_get_selection (GIMP_TOOL_LINE (gradient_tool->widget));
+
+ if (cancel ||
+ gimp_gradient_tool_editor_gradient_info_is_trivial (gradient_tool, info))
+ {
+ /* if the edit is canceled, or if nothing changed, undo the last
+ * step
+ */
+ gimp_gradient_tool_editor_gradient_info_apply (gradient_tool, info, FALSE);
+
+ gradient_tool->undo_stack = g_slist_remove (gradient_tool->undo_stack,
+ info);
+ gimp_gradient_tool_editor_gradient_info_free (info);
+ }
+ else
+ {
+ /* otherwise, blow the redo stack */
+ g_slist_free_full (gradient_tool->redo_stack,
+ (GDestroyNotify) gimp_gradient_tool_editor_gradient_info_free);
+ gradient_tool->redo_stack = NULL;
+ }
+
+ /* update the undo actions / menu items */
+ if (! gradient_tool->flush_idle_id)
+ {
+ gradient_tool->flush_idle_id =
+ g_idle_add ((GSourceFunc) gimp_gradient_tool_editor_flush_idle,
+ gradient_tool);
+ }
+ }
+}