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app: add transform-grid controller to prop-gui 

... which allows ops to create a transform-grid widget, similar to
the unified-transform tool, which can be used to control a
transformation matrix.

Implement the transform-grid controller in GimpFilterTool.
This commit is contained in:
Ell 2018-03-01 02:16:50 -05:00
parent 827d747fae
commit 3985651d26
2 changed files with 184 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
app/propgui/propgui-types.h
View File

@ -29,7 +29,8 @@
typedef enum
{
GIMP_CONTROLLER_TYPE_LINE,
GIMP_CONTROLLER_TYPE_SLIDER_LINE
GIMP_CONTROLLER_TYPE_SLIDER_LINE,
GIMP_CONTROLLER_TYPE_TRANSFORM_GRID
} GimpControllerType;
@ -96,6 +97,9 @@ typedef void (* GimpControllerSliderLineCallback) (gpointer d
gdouble y2,
const GimpControllerSlider *sliders,
gint n_sliders);
typedef void (* GimpControllerTransformGridCallback) (gpointer data,
GeglRectangle *area,
const GimpMatrix3 *transform);
typedef GtkWidget * (* GimpCreatePickerFunc) (gpointer creator,

128
app/tools/gimpfiltertool-widgets.c
View File

@ -22,12 +22,15 @@
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "tools-types.h"
#include "core/gimpitem.h"
#include "display/gimpdisplay.h"
#include "display/gimptoolline.h"
#include "display/gimptooltransformgrid.h"
#include "gimpfilteroptions.h"
#include "gimpfiltertool.h"
@ -68,6 +71,12 @@ static void gimp_filter_tool_set_slider_line (Controller *
static void gimp_filter_tool_slider_line_changed (GimpToolWidget *widget,
Controller *controller);
static void gimp_filter_tool_set_transform_grid (Controller *controller,
GeglRectangle *area,
const GimpMatrix3 *matrix);
static void gimp_filter_tool_transform_grid_changed (GimpToolWidget *widget,
Controller *controller);
/* public functions */
@ -130,6 +139,47 @@ gimp_filter_tool_create_widget (GimpFilterTool *filter_tool,
*set_func = (GCallback) gimp_filter_tool_set_slider_line;
*set_func_data = controller;
break;
case GIMP_CONTROLLER_TYPE_TRANSFORM_GRID:
{
GimpMatrix3 transform;
gint off_x, off_y;
GeglRectangle area;
gdouble x1, y1;
gdouble x2, y2;
gimp_matrix3_identity (&transform);
gimp_filter_tool_get_drawable_area (filter_tool, &off_x, &off_y, &area);
x1 = off_x + area.x;
y1 = off_y + area.y;
x2 = x1 + area.width;
y2 = y1 + area.height;
controller->widget = gimp_tool_transform_grid_new (shell, &transform,
x1, y1, x2, y2);
g_object_set (controller->widget,
"pivot-x", (x1 + x2) / 2.0,
"pivot-y", (y1 + y2) / 2.0,
"inside-function", GIMP_TRANSFORM_FUNCTION_MOVE,
"outside-function", GIMP_TRANSFORM_FUNCTION_ROTATE,
"use-corner-handles", TRUE,
"use-perspective-handles", TRUE,
"use-side-handles", TRUE,
"use-shear-handles", TRUE,
"use-pivot-handle", TRUE,
NULL);
g_signal_connect (controller->widget, "changed",
G_CALLBACK (gimp_filter_tool_transform_grid_changed),
controller);
*set_func = (GCallback) gimp_filter_tool_set_transform_grid;
*set_func_data = controller;
}
break;
}
g_object_set_data_full (G_OBJECT (controller->widget),
@ -290,3 +340,81 @@ gimp_filter_tool_slider_line_changed (GimpToolWidget *widget,
slider_line_callback (controller->creator_data,
&area, x1, y1, x2, y2, sliders, n_sliders);
}
static void
gimp_filter_tool_set_transform_grid (Controller *controller,
GeglRectangle *area,
const GimpMatrix3 *transform)
{
GimpTool *tool = GIMP_TOOL (controller->filter_tool);
GimpDrawable *drawable = tool->drawable;
gdouble x1 = area->x;
gdouble y1 = area->y;
gdouble x2 = area->x + area->width;
gdouble y2 = area->y + area->height;
GimpMatrix3 matrix;
if (drawable)
{
gint off_x, off_y;
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
x1 += off_x;
y1 += off_y;
x2 += off_x;
y2 += off_y;
}
gimp_matrix3_identity (&matrix);
gimp_matrix3_translate (&matrix, -x1, -y1);
gimp_matrix3_mult (transform, &matrix);
gimp_matrix3_translate (&matrix, +x1, +y1);
g_signal_handlers_block_by_func (controller->widget,
gimp_filter_tool_transform_grid_changed,
controller);
g_object_set (controller->widget,
"transform", &matrix,
"x1", x1,
"y1", y1,
"x2", x2,
"y2", y2,
NULL);
g_signal_handlers_unblock_by_func (controller->widget,
gimp_filter_tool_transform_grid_changed,
controller);
}
static void
gimp_filter_tool_transform_grid_changed (GimpToolWidget *widget,
Controller *controller)
{
GimpFilterTool *filter_tool = controller->filter_tool;
GimpControllerTransformGridCallback transform_grid_callback;
gint off_x, off_y;
GeglRectangle area;
GimpMatrix3 *transform;
GimpMatrix3 matrix;
transform_grid_callback =
(GimpControllerTransformGridCallback) controller->creator_callback;
g_object_get (widget,
"transform", &transform,
NULL);
gimp_filter_tool_get_drawable_area (filter_tool, &off_x, &off_y, &area);
gimp_matrix3_identity (&matrix);
gimp_matrix3_translate (&matrix, +(off_x + area.x), +(off_y + area.y));
gimp_matrix3_mult (transform, &matrix);
gimp_matrix3_translate (&matrix, -(off_x + area.x), -(off_y + area.y));
transform_grid_callback (controller->creator_data,
&area, &matrix);
g_free (transform);
}