[gimp/wip/gradient-edit: 33/43] app: handle prepare-to-remove-slider signal in the blend tool
- From: N/A <ell src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gimp/wip/gradient-edit: 33/43] app: handle prepare-to-remove-slider signal in the blend tool
- Date: Mon, 9 Oct 2017 16:26:17 +0000 (UTC)
commit ff341eca644f54b742a9b20d55922db3aeab0d6e
Author: Ell <ell_se yahoo com>
Date: Fri Oct 6 12:11:45 2017 -0400
app: handle prepare-to-remove-slider signal in the blend tool
Add a tentative_gradient member to GimpBlendTool, which, when set,
is displayed instead of the current gradient.
Use this to show a version of the gradient with the currently
selected stop deleted, upon receiving a prepare-to-remove-slider
signal, i.e., when the slider is about to be removed.
app/tools/gimpblendtool-editor.c | 79 +++++++++++++++++++++++++++++---------
app/tools/gimpblendtool.c | 46 +++++++++++++++++++---
app/tools/gimpblendtool.h | 13 +++++-
3 files changed, 111 insertions(+), 27 deletions(-)
---
diff --git a/app/tools/gimpblendtool-editor.c b/app/tools/gimpblendtool-editor.c
index c373cb0..8c3bcf5 100644
--- a/app/tools/gimpblendtool-editor.c
+++ b/app/tools/gimpblendtool-editor.c
@@ -49,29 +49,33 @@
/* local function prototypes */
-static gboolean gimp_blend_tool_editor_line_can_add_slider (GimpToolLine *line,
- gdouble value,
- GimpBlendTool *blend_tool);
-static gint gimp_blend_tool_editor_line_add_slider (GimpToolLine *line,
- gdouble value,
- GimpBlendTool *blend_tool);
-static void gimp_blend_tool_editor_line_remove_slider (GimpToolLine *line,
- gint slider,
- GimpBlendTool *blend_tool);
+static gboolean gimp_blend_tool_editor_line_can_add_slider (GimpToolLine *line,
+ gdouble value,
+ GimpBlendTool
*blend_tool);
+static gint gimp_blend_tool_editor_line_add_slider (GimpToolLine *line,
+ gdouble value,
+ GimpBlendTool
*blend_tool);
+static void gimp_blend_tool_editor_line_prepare_to_remove_slider (GimpToolLine *line,
+ gint slider,
+ gboolean remove,
+ GimpBlendTool
*blend_tool);
+static void gimp_blend_tool_editor_line_remove_slider (GimpToolLine *line,
+ gint slider,
+ GimpBlendTool
*blend_tool);
-static gboolean gimp_blend_tool_editor_is_gradient_editable (GimpBlendTool *blend_tool);
+static gboolean gimp_blend_tool_editor_is_gradient_editable (GimpBlendTool
*blend_tool);
-static GimpGradientSegment * gimp_blend_tool_editor_handle_get_segment (GimpBlendTool *blend_tool,
- gint handle);
+static GimpGradientSegment * gimp_blend_tool_editor_handle_get_segment (GimpBlendTool *blend_tool,
+ gint handle);
-static void gimp_blend_tool_editor_block_handlers (GimpBlendTool *blend_tool);
-static void gimp_blend_tool_editor_unblock_handlers (GimpBlendTool *blend_tool);
-static gboolean gimp_blend_tool_editor_are_handlers_blocked (GimpBlendTool *blend_tool);
+static void gimp_blend_tool_editor_block_handlers (GimpBlendTool
*blend_tool);
+static void gimp_blend_tool_editor_unblock_handlers (GimpBlendTool
*blend_tool);
+static gboolean gimp_blend_tool_editor_are_handlers_blocked (GimpBlendTool
*blend_tool);
-static void gimp_blend_tool_editor_freeze_gradient (GimpBlendTool *blend_tool);
-static void gimp_blend_tool_editor_thaw_gradient (GimpBlendTool *blend_tool);
+static void gimp_blend_tool_editor_freeze_gradient (GimpBlendTool
*blend_tool);
+static void gimp_blend_tool_editor_thaw_gradient (GimpBlendTool
*blend_tool);
-static void gimp_blend_tool_editor_update_sliders (GimpBlendTool *blend_tool);
+static void gimp_blend_tool_editor_update_sliders (GimpBlendTool
*blend_tool);
/* private functions */
@@ -123,6 +127,40 @@ gimp_blend_tool_editor_line_add_slider (GimpToolLine *line,
}
static void
+gimp_blend_tool_editor_line_prepare_to_remove_slider (GimpToolLine *line,
+ gint slider,
+ gboolean remove,
+ GimpBlendTool *blend_tool)
+{
+ if (remove)
+ {
+ GimpGradient *tentative_gradient;
+ GimpGradientSegment *seg;
+ gint i;
+
+ tentative_gradient =
+ GIMP_GRADIENT (gimp_data_duplicate (GIMP_DATA (blend_tool->gradient)));
+
+ seg = gimp_blend_tool_editor_handle_get_segment (blend_tool, slider);
+
+ i = gimp_gradient_segment_range_get_n_segments (blend_tool->gradient,
+ blend_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_blend_tool_set_tentative_gradient (blend_tool, tentative_gradient);
+ }
+ else
+ {
+ gimp_blend_tool_set_tentative_gradient (blend_tool, NULL);
+ }
+}
+
+static void
gimp_blend_tool_editor_line_remove_slider (GimpToolLine *line,
gint slider,
GimpBlendTool *blend_tool)
@@ -137,6 +175,8 @@ gimp_blend_tool_editor_line_remove_slider (GimpToolLine *line,
seg, seg->next, NULL, NULL);
gimp_blend_tool_editor_thaw_gradient (blend_tool);
+
+ gimp_blend_tool_set_tentative_gradient (blend_tool, NULL);
}
static gboolean
@@ -404,6 +444,9 @@ gimp_blend_tool_editor_start (GimpBlendTool *blend_tool)
g_signal_connect (blend_tool->widget, "add-slider",
G_CALLBACK (gimp_blend_tool_editor_line_add_slider),
blend_tool);
+ g_signal_connect (blend_tool->widget, "prepare-to-remove-slider",
+ G_CALLBACK (gimp_blend_tool_editor_line_prepare_to_remove_slider),
+ blend_tool);
g_signal_connect (blend_tool->widget, "remove-slider",
G_CALLBACK (gimp_blend_tool_editor_line_remove_slider),
blend_tool);
diff --git a/app/tools/gimpblendtool.c b/app/tools/gimpblendtool.c
index a00d920..ef9a1fc 100644
--- a/app/tools/gimpblendtool.c
+++ b/app/tools/gimpblendtool.c
@@ -908,13 +908,16 @@ gimp_blend_tool_gradient_dirty (GimpBlendTool *blend_tool)
if (! blend_tool->filter)
return;
- /* Set a property on the node. Otherwise it will cache and refuse to update */
- gegl_node_set (blend_tool->render_node,
- "gradient", blend_tool->gradient,
- NULL);
+ if (! blend_tool->tentative_gradient)
+ {
+ /* Set a property on the node. Otherwise it will cache and refuse to update */
+ gegl_node_set (blend_tool->render_node,
+ "gradient", blend_tool->gradient,
+ NULL);
- /* Update the filter */
- gimp_drawable_filter_apply (blend_tool->filter, NULL);
+ /* Update the filter */
+ gimp_drawable_filter_apply (blend_tool->filter, NULL);
+ }
gimp_blend_tool_editor_gradient_dirty (blend_tool);
}
@@ -1039,3 +1042,34 @@ blend_info_free (BlendInfo *info)
{
g_slice_free (BlendInfo, info);
}
+
+
+/* protected functions */
+
+
+void
+gimp_blend_tool_set_tentative_gradient (GimpBlendTool *blend_tool,
+ GimpGradient *gradient)
+{
+ g_return_if_fail (GIMP_IS_BLEND_TOOL (blend_tool));
+ g_return_if_fail (gradient == NULL || GIMP_IS_GRADIENT (gradient));
+
+ if (gradient != blend_tool->tentative_gradient)
+ {
+ g_clear_object (&blend_tool->tentative_gradient);
+
+ blend_tool->tentative_gradient = gradient;
+
+ if (gradient)
+ g_object_ref (gradient);
+
+ if (blend_tool->render_node)
+ {
+ gegl_node_set (blend_tool->render_node,
+ "gradient", gradient ? gradient : blend_tool->gradient,
+ NULL);
+
+ gimp_drawable_filter_apply (blend_tool->filter, NULL);
+ }
+ }
+}
diff --git a/app/tools/gimpblendtool.h b/app/tools/gimpblendtool.h
index 1a0bc87..3a743d2 100644
--- a/app/tools/gimpblendtool.h
+++ b/app/tools/gimpblendtool.h
@@ -40,6 +40,7 @@ struct _GimpBlendTool
GimpDrawTool parent_instance;
GimpGradient *gradient;
+ GimpGradient *tentative_gradient;
gdouble start_x; /* starting x coord */
gdouble start_y; /* starting y coord */
@@ -73,10 +74,16 @@ struct _GimpBlendToolClass
};
-void gimp_blend_tool_register (GimpToolRegisterCallback callback,
- gpointer data);
+void gimp_blend_tool_register (GimpToolRegisterCallback callback,
+ gpointer data);
-GType gimp_blend_tool_get_type (void) G_GNUC_CONST;
+GType gimp_blend_tool_get_type (void) G_GNUC_CONST;
+
+
+/* protected functions */
+
+void gimp_blend_tool_set_tentative_gradient (GimpBlendTool *blend_tool,
+ GimpGradient *gradient);
#endif /* __GIMP_BLEND_TOOL_H__ */
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