[gimp/wip/gradient-edit: 31/42] app: convert midpoints to stops via double-click in the blend tool
- From: N/A <ell src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gimp/wip/gradient-edit: 31/42] app: convert midpoints to stops via double-click in the blend tool
- Date: Fri, 6 Oct 2017 21:05:55 +0000 (UTC)
commit 5a9d1f3f072a1988c198ab43cd14ccb9dac606ab
Author: Ell <ell_se yahoo com>
Date: Tue Aug 1 18:45:13 2017 -0400
app: convert midpoints to stops via double-click in the blend tool
When a midpoint is double-clicked, convert it into a gradient stop
(i.e., split the corresponding segment at the midpoint,) by
responding to the line's handle-clicked signal.
app/tools/gimpblendtool-editor.c | 172 +++++++++++++++++++++++++++++---------
app/tools/gimpblendtool.c | 36 ++++----
2 files changed, 150 insertions(+), 58 deletions(-)
---
diff --git a/app/tools/gimpblendtool-editor.c b/app/tools/gimpblendtool-editor.c
index 23d1b0e..bb3af08 100644
--- a/app/tools/gimpblendtool-editor.c
+++ b/app/tools/gimpblendtool-editor.c
@@ -49,29 +49,43 @@
/* 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_is_gradient_editable (GimpBlendTool *blend_tool);
-
-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_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 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_handle_clicked (GimpToolLine *line,
+ gint handle,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpBlendTool *blend_tool);
+
+static gboolean gimp_blend_tool_editor_is_gradient_editable (GimpBlendTool *blend_tool);
+
+static gboolean gimp_blend_tool_editor_handle_is_endpoint (GimpBlendTool *blend_tool,
+ gint handle);
+static gboolean gimp_blend_tool_editor_handle_is_stop (GimpBlendTool *blend_tool,
+ gint handle);
+static gboolean gimp_blend_tool_editor_handle_is_midpoint (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_freeze_gradient (GimpBlendTool *blend_tool);
+static void gimp_blend_tool_editor_thaw_gradient (GimpBlendTool *blend_tool);
+
+static gint gimp_blend_tool_editor_add_stop (GimpBlendTool *blend_tool,
+ gdouble value);
+
+static void gimp_blend_tool_editor_update_sliders (GimpBlendTool *blend_tool);
/* private functions */
@@ -94,13 +108,9 @@ gimp_blend_tool_editor_line_add_slider (GimpToolLine *line,
gdouble value,
GimpBlendTool *blend_tool)
{
- GimpBlendOptions *options = GIMP_BLEND_TOOL_GET_OPTIONS (blend_tool);
- GimpPaintOptions *paint_options = GIMP_PAINT_OPTIONS (options);
- gdouble offset = options->offset / 100.0;
- GimpGradientSegment *seg;
- gint slider;
-
- gimp_blend_tool_editor_freeze_gradient (blend_tool);
+ GimpBlendOptions *options = GIMP_BLEND_TOOL_GET_OPTIONS (blend_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);
@@ -109,17 +119,7 @@ gimp_blend_tool_editor_line_add_slider (GimpToolLine *line,
if (paint_options->gradient_options->gradient_reverse)
value = 1.0 - value;
- gimp_gradient_split_at (blend_tool->gradient,
- GIMP_CONTEXT (options), NULL, value, &seg, NULL);
-
- slider =
- gimp_gradient_segment_range_get_n_segments (blend_tool->gradient,
- blend_tool->gradient->segments,
- seg) - 1;
-
- gimp_blend_tool_editor_thaw_gradient (blend_tool);
-
- return slider;
+ return gimp_blend_tool_editor_add_stop (blend_tool, value);
}
static void
@@ -140,6 +140,40 @@ gimp_blend_tool_editor_line_remove_slider (GimpToolLine *line,
}
static gboolean
+gimp_blend_tool_editor_line_handle_clicked (GimpToolLine *line,
+ gint handle,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpBlendTool *blend_tool)
+{
+ if (gimp_blend_tool_editor_handle_is_midpoint (blend_tool, handle))
+ {
+ if (press_type == GIMP_BUTTON_PRESS_DOUBLE &&
+ gimp_blend_tool_editor_is_gradient_editable (blend_tool))
+ {
+ const GimpControllerSlider *sliders;
+ gint stop;
+
+ sliders = gimp_tool_line_get_sliders (line, NULL);
+
+ if (sliders[handle].value > sliders[handle].min + EPSILON &&
+ sliders[handle].value < sliders[handle].max - EPSILON)
+ {
+ stop = gimp_blend_tool_editor_add_stop (blend_tool,
+ sliders[handle].value);
+
+ gimp_tool_line_set_selection (line, stop);
+ }
+
+ /* return FALSE, so that the new slider can be dragged immediately */
+ return FALSE;
+ }
+ }
+
+ return FALSE;
+}
+
+static gboolean
gimp_blend_tool_editor_is_gradient_editable (GimpBlendTool *blend_tool)
{
GimpBlendOptions *options = GIMP_BLEND_TOOL_GET_OPTIONS (blend_tool);
@@ -148,6 +182,36 @@ gimp_blend_tool_editor_is_gradient_editable (GimpBlendTool *blend_tool)
gimp_data_is_writable (GIMP_DATA (blend_tool->gradient));
}
+static gboolean
+gimp_blend_tool_editor_handle_is_endpoint (GimpBlendTool *blend_tool,
+ gint handle)
+{
+ return handle == GIMP_TOOL_LINE_HANDLE_START ||
+ handle == GIMP_TOOL_LINE_HANDLE_END;
+}
+
+static gboolean
+gimp_blend_tool_editor_handle_is_stop (GimpBlendTool *blend_tool,
+ gint handle)
+{
+ gint n_sliders;
+
+ gimp_tool_line_get_sliders (GIMP_TOOL_LINE (blend_tool->widget), &n_sliders);
+
+ return handle >= 0 && handle < n_sliders / 2;
+}
+
+static gboolean
+gimp_blend_tool_editor_handle_is_midpoint (GimpBlendTool *blend_tool,
+ gint handle)
+{
+ gint n_sliders;
+
+ gimp_tool_line_get_sliders (GIMP_TOOL_LINE (blend_tool->widget), &n_sliders);
+
+ return handle >= n_sliders / 2;
+}
+
static GimpGradientSegment *
gimp_blend_tool_editor_handle_get_segment (GimpBlendTool *blend_tool,
gint handle)
@@ -241,6 +305,29 @@ gimp_blend_tool_editor_thaw_gradient(GimpBlendTool *blend_tool)
gimp_blend_tool_editor_unblock_handlers (blend_tool);
}
+static gint
+gimp_blend_tool_editor_add_stop (GimpBlendTool *blend_tool,
+ gdouble value)
+{
+ GimpBlendOptions *options = GIMP_BLEND_TOOL_GET_OPTIONS (blend_tool);
+ GimpGradientSegment *seg;
+ gint stop;
+
+ gimp_blend_tool_editor_freeze_gradient (blend_tool);
+
+ gimp_gradient_split_at (blend_tool->gradient,
+ GIMP_CONTEXT (options), NULL, value, &seg, NULL);
+
+ stop =
+ gimp_gradient_segment_range_get_n_segments (blend_tool->gradient,
+ blend_tool->gradient->segments,
+ seg) - 1;
+
+ gimp_blend_tool_editor_thaw_gradient (blend_tool);
+
+ return stop;
+}
+
static void
gimp_blend_tool_editor_update_sliders (GimpBlendTool *blend_tool)
{
@@ -407,6 +494,9 @@ gimp_blend_tool_editor_start (GimpBlendTool *blend_tool)
g_signal_connect (blend_tool->widget, "remove-slider",
G_CALLBACK (gimp_blend_tool_editor_line_remove_slider),
blend_tool);
+ g_signal_connect (blend_tool->widget, "handle-clicked",
+ G_CALLBACK (gimp_blend_tool_editor_line_handle_clicked),
+ blend_tool);
}
void
diff --git a/app/tools/gimpblendtool.c b/app/tools/gimpblendtool.c
index a00d920..b74d34f 100644
--- a/app/tools/gimpblendtool.c
+++ b/app/tools/gimpblendtool.c
@@ -200,22 +200,23 @@ gimp_blend_tool_init (GimpBlendTool *blend_tool)
{
GimpTool *tool = GIMP_TOOL (blend_tool);
- gimp_tool_control_set_scroll_lock (tool->control, TRUE);
- gimp_tool_control_set_preserve (tool->control, FALSE);
- gimp_tool_control_set_dirty_mask (tool->control,
- GIMP_DIRTY_IMAGE |
- GIMP_DIRTY_IMAGE_STRUCTURE |
- GIMP_DIRTY_DRAWABLE |
- GIMP_DIRTY_ACTIVE_DRAWABLE);
- gimp_tool_control_set_wants_click (tool->control, TRUE);
- gimp_tool_control_set_precision (tool->control,
- GIMP_CURSOR_PRECISION_SUBPIXEL);
- gimp_tool_control_set_tool_cursor (tool->control,
- GIMP_TOOL_CURSOR_BLEND);
- gimp_tool_control_set_action_opacity (tool->control,
- "context/context-opacity-set");
- gimp_tool_control_set_action_object_1 (tool->control,
- "context/context-gradient-select-set");
+ gimp_tool_control_set_scroll_lock (tool->control, TRUE);
+ gimp_tool_control_set_preserve (tool->control, FALSE);
+ gimp_tool_control_set_dirty_mask (tool->control,
+ GIMP_DIRTY_IMAGE |
+ GIMP_DIRTY_IMAGE_STRUCTURE |
+ GIMP_DIRTY_DRAWABLE |
+ GIMP_DIRTY_ACTIVE_DRAWABLE);
+ gimp_tool_control_set_wants_click (tool->control, TRUE);
+ gimp_tool_control_set_wants_double_click (tool->control, TRUE);
+ gimp_tool_control_set_precision (tool->control,
+ GIMP_CURSOR_PRECISION_SUBPIXEL);
+ gimp_tool_control_set_tool_cursor (tool->control,
+ GIMP_TOOL_CURSOR_BLEND);
+ gimp_tool_control_set_action_opacity (tool->control,
+ "context/context-opacity-set");
+ gimp_tool_control_set_action_object_1 (tool->control,
+ "context/context-gradient-select-set");
gimp_draw_tool_set_default_status (GIMP_DRAW_TOOL (tool),
_("Click-Drag to draw a gradient"));
@@ -342,7 +343,8 @@ gimp_blend_tool_button_press (GimpTool *tool,
blend_info_new (start_x, start_y, end_x, end_y));
}
- gimp_tool_control_activate (tool->control);
+ if (press_type == GIMP_BUTTON_PRESS_NORMAL)
+ gimp_tool_control_activate (tool->control);
}
static void
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