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transformtool: Add temporary new handles

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put perspective handles on the outside instead (if you invert the frame,
they'll switch place with the scale handles, oh well)
This commit is contained in:
Mikael Magnusson
2012-06-14 02:48:44 +02:00
parent 9e330e432b
commit a8a8450b6e
5 changed files with 234 additions and 117 deletions
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4
app/display/display-enums.c
View File

@ -89,6 +89,8 @@ gimp_handle_type_get_type (void)
{ GIMP_HANDLE_FILLED_SQUARE, "GIMP_HANDLE_FILLED_SQUARE", "filled-square" }, { GIMP_HANDLE_FILLED_SQUARE, "GIMP_HANDLE_FILLED_SQUARE", "filled-square" },
{ GIMP_HANDLE_CIRCLE, "GIMP_HANDLE_CIRCLE", "circle" }, { GIMP_HANDLE_CIRCLE, "GIMP_HANDLE_CIRCLE", "circle" },
{ GIMP_HANDLE_FILLED_CIRCLE, "GIMP_HANDLE_FILLED_CIRCLE", "filled-circle" }, { GIMP_HANDLE_FILLED_CIRCLE, "GIMP_HANDLE_FILLED_CIRCLE", "filled-circle" },
{ GIMP_HANDLE_DIAMOND, "GIMP_HANDLE_DIAMOND", "diamond" },
{ GIMP_HANDLE_FILLED_DIAMOND, "GIMP_HANDLE_FILLED_DIAMOND", "filled-diamond" },
{ GIMP_HANDLE_CROSS, "GIMP_HANDLE_CROSS", "cross" }, { GIMP_HANDLE_CROSS, "GIMP_HANDLE_CROSS", "cross" },
{ 0, NULL, NULL } { 0, NULL, NULL }
}; };
@ -99,6 +101,8 @@ gimp_handle_type_get_type (void)
{ GIMP_HANDLE_FILLED_SQUARE, "GIMP_HANDLE_FILLED_SQUARE", NULL }, { GIMP_HANDLE_FILLED_SQUARE, "GIMP_HANDLE_FILLED_SQUARE", NULL },
{ GIMP_HANDLE_CIRCLE, "GIMP_HANDLE_CIRCLE", NULL }, { GIMP_HANDLE_CIRCLE, "GIMP_HANDLE_CIRCLE", NULL },
{ GIMP_HANDLE_FILLED_CIRCLE, "GIMP_HANDLE_FILLED_CIRCLE", NULL }, { GIMP_HANDLE_FILLED_CIRCLE, "GIMP_HANDLE_FILLED_CIRCLE", NULL },
{ GIMP_HANDLE_DIAMOND, "GIMP_HANDLE_DIAMOND", NULL },
{ GIMP_HANDLE_FILLED_DIAMOND, "GIMP_HANDLE_FILLED_DIAMOND", NULL },
{ GIMP_HANDLE_CROSS, "GIMP_HANDLE_CROSS", NULL }, { GIMP_HANDLE_CROSS, "GIMP_HANDLE_CROSS", NULL },
{ 0, NULL, NULL } { 0, NULL, NULL }
}; };

2
app/display/display-enums.h
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@ -58,6 +58,8 @@ typedef enum
GIMP_HANDLE_FILLED_SQUARE, GIMP_HANDLE_FILLED_SQUARE,
GIMP_HANDLE_CIRCLE, GIMP_HANDLE_CIRCLE,
GIMP_HANDLE_FILLED_CIRCLE, GIMP_HANDLE_FILLED_CIRCLE,
GIMP_HANDLE_DIAMOND,
GIMP_HANDLE_FILLED_DIAMOND,
GIMP_HANDLE_CROSS GIMP_HANDLE_CROSS
} GimpHandleType; } GimpHandleType;

31
app/display/gimpcanvashandle.c
View File

@ -277,6 +277,8 @@ gimp_canvas_handle_transform (GimpCanvasItem *item,
case GIMP_HANDLE_CIRCLE: case GIMP_HANDLE_CIRCLE:
case GIMP_HANDLE_FILLED_CIRCLE: case GIMP_HANDLE_FILLED_CIRCLE:
case GIMP_HANDLE_CROSS: case GIMP_HANDLE_CROSS:
case GIMP_HANDLE_DIAMOND:
case GIMP_HANDLE_FILLED_DIAMOND:
gimp_canvas_item_shift_to_center (private->anchor, gimp_canvas_item_shift_to_center (private->anchor,
*x, *y, *x, *y,
private->width, private->width,
@ -344,6 +346,20 @@ gimp_canvas_handle_draw (GimpCanvasItem *item,
_gimp_canvas_item_stroke (item, cr); _gimp_canvas_item_stroke (item, cr);
break; break;
case GIMP_HANDLE_DIAMOND:
case GIMP_HANDLE_FILLED_DIAMOND:
cairo_move_to (cr, x, y - (gdouble) private->height / 2.0);
cairo_line_to (cr, x + (gdouble) private->width / 2.0, y);
cairo_line_to (cr, x, y + (gdouble) private->height / 2.0);
cairo_line_to (cr, x - (gdouble) private->width / 2.0, y);
cairo_line_to (cr, x, y - (gdouble) private->height / 2.0);
if (private->type == GIMP_HANDLE_DIAMOND)
_gimp_canvas_item_stroke (item, cr);
else
_gimp_canvas_item_fill (item, cr);
break;
default: default:
break; break;
} }
@ -372,10 +388,12 @@ gimp_canvas_handle_get_extents (GimpCanvasItem *item,
case GIMP_HANDLE_CIRCLE: case GIMP_HANDLE_CIRCLE:
case GIMP_HANDLE_FILLED_CIRCLE: case GIMP_HANDLE_FILLED_CIRCLE:
case GIMP_HANDLE_CROSS: case GIMP_HANDLE_CROSS:
rectangle.x = x - private->width / 2 - 1.5; case GIMP_HANDLE_DIAMOND:
rectangle.y = y - private->height / 2 - 1.5; case GIMP_HANDLE_FILLED_DIAMOND:
rectangle.width = private->width + 3.0; rectangle.x = x - private->width / 2 - 2.0;
rectangle.height = private->height + 3.0; rectangle.y = y - private->height / 2 - 2.0;
rectangle.width = private->width + 4.0;
rectangle.height = private->height + 4.0;
break; break;
default: default:
@ -422,6 +440,11 @@ gimp_canvas_handle_hit (GimpCanvasItem *item,
return ((SQR (handle_tx - tx) + SQR (handle_ty - ty)) < SQR (width)); return ((SQR (handle_tx - tx) + SQR (handle_ty - ty)) < SQR (width));
} }
case GIMP_HANDLE_DIAMOND:
case GIMP_HANDLE_FILLED_DIAMOND:
return ((ABS (handle_tx - tx) + ABS (handle_ty - ty)) < ABS (private->width));
break;
default: default:
break; break;
} }

26
app/tools/gimptransformtool.h
View File

@ -22,8 +22,6 @@
#include "gimpdrawtool.h" #include "gimpdrawtool.h"
#define TRANS_INFO_SIZE 10
typedef enum typedef enum
{ {
TRANSFORM_CREATING, TRANSFORM_CREATING,
@ -36,10 +34,26 @@ typedef enum
TRANSFORM_HANDLE_S, /* south */ TRANSFORM_HANDLE_S, /* south */
TRANSFORM_HANDLE_E, /* east */ TRANSFORM_HANDLE_E, /* east */
TRANSFORM_HANDLE_W, /* west */ TRANSFORM_HANDLE_W, /* west */
TRANSFORM_HANDLE_PIVOT, /* pivot for rotation and scaling */ TRANSFORM_HANDLE_PIVOT, /* pivot for rotation and scaling */
TRANSFORM_HANDLE_CENTER /* for moving */ TRANSFORM_HANDLE_CENTER, /* for moving */
/* extra handles for unified tool */
TRANSFORM_HANDLE_NW_P, /* perspective handles */
TRANSFORM_HANDLE_NE_P,
TRANSFORM_HANDLE_SW_P,
TRANSFORM_HANDLE_SE_P,
TRANSFORM_HANDLE_N_S, /* shearing handles */
TRANSFORM_HANDLE_S_S,
TRANSFORM_HANDLE_E_S,
TRANSFORM_HANDLE_W_S,
TRANSFORM_HANDLE_ROTATION, /* rotation handle */
TRANSFORM_HANDLE_NUM /* keep this last so *handles[] is the right size */
} TransformAction; } TransformAction;
/* This is not the number of items in the enum above, but the max size of the
* enums at the top of each transformation tool, stored in trans_info and related */
#define TRANS_INFO_SIZE 10
typedef gdouble TransInfo[TRANS_INFO_SIZE]; typedef gdouble TransInfo[TRANS_INFO_SIZE];
@ -74,7 +88,7 @@ struct _GimpTransformTool
gint x1, y1; /* upper left hand coordinate */ gint x1, y1; /* upper left hand coordinate */
gint x2, y2; /* lower right hand coords */ gint x2, y2; /* lower right hand coords */
gdouble cx, cy; /* center point (for moving) */ gdouble cx, cy; /* center point (for moving) */
gdouble px, py; /* pivot point (for rotation) */ gdouble px, py; /* pivot point (for rotation/scaling)*/
gdouble aspect; /* original aspect ratio */ gdouble aspect; /* original aspect ratio */
gdouble tx1, ty1; /* transformed handle coords */ gdouble tx1, ty1; /* transformed handle coords */
@ -102,7 +116,7 @@ struct _GimpTransformTool
gboolean use_mid_handles; /* use handles at midpoints of edges */ gboolean use_mid_handles; /* use handles at midpoints of edges */
gboolean use_pivot; /* use pivot point */ gboolean use_pivot; /* use pivot point */
GimpCanvasItem *handles[TRANSFORM_HANDLE_CENTER + 1]; GimpCanvasItem *handles[TRANSFORM_HANDLE_NUM];
const gchar *progress_text; const gchar *progress_text;

288
app/tools/gimpunifiedtransformtool.c
View File

@ -95,7 +95,7 @@ gimp_unified_transform_tool_register (GimpToolRegisterCallback callback,
_("Unified Transform"), _("Unified Transform"),
_("Unified Transform Tool: " _("Unified Transform Tool: "
"Transform the layer, selection or path"), "Transform the layer, selection or path"),
N_("_Unified Transform"), "<shift>U", N_("_Unified Transform"), "<shift>L",
NULL, GIMP_HELP_TOOL_UNIFIED_TRANSFORM, NULL, GIMP_HELP_TOOL_UNIFIED_TRANSFORM,
GIMP_STOCK_TOOL_UNIFIED_TRANSFORM, GIMP_STOCK_TOOL_UNIFIED_TRANSFORM,
data); data);
@ -179,9 +179,10 @@ gimp_unified_transform_tool_draw (GimpDrawTool *draw_tool)
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (draw_tool); GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool); GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
GimpImage *image = gimp_display_get_image (tool->display); GimpImage *image = gimp_display_get_image (tool->display);
gint handle_w; GimpCanvasGroup *stroke_group;
gint handle_h; gint handle_w, handle_h;
gint i; gint i, d;
gdouble x, y;
for (i = 0; i < G_N_ELEMENTS (tr_tool->handles); i++) for (i = 0; i < G_N_ELEMENTS (tr_tool->handles); i++)
tr_tool->handles[i] = NULL; tr_tool->handles[i] = NULL;
@ -214,133 +215,202 @@ gimp_unified_transform_tool_draw (GimpDrawTool *draw_tool)
gimp_transform_tool_handles_recalc (tr_tool, tool->display, gimp_transform_tool_handles_recalc (tr_tool, tool->display,
&handle_w, &handle_h); &handle_w, &handle_h);
if (tr_tool->use_handles) /* draw the scale handles */
{ tr_tool->handles[TRANSFORM_HANDLE_NW] =
/* draw the tool handles */ gimp_draw_tool_add_handle (draw_tool,
tr_tool->handles[TRANSFORM_HANDLE_NW] = GIMP_HANDLE_SQUARE,
gimp_draw_tool_add_handle (draw_tool, tr_tool->tx1, tr_tool->ty1,
GIMP_HANDLE_SQUARE, handle_w, handle_h,
tr_tool->tx1, tr_tool->ty1, GIMP_HANDLE_ANCHOR_NORTH_WEST);
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
tr_tool->handles[TRANSFORM_HANDLE_NE] = tr_tool->handles[TRANSFORM_HANDLE_NE] =
gimp_draw_tool_add_handle (draw_tool, gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE, GIMP_HANDLE_SQUARE,
tr_tool->tx2, tr_tool->ty2, tr_tool->tx2, tr_tool->ty2,
handle_w, handle_h, handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER); GIMP_HANDLE_ANCHOR_NORTH_EAST);
tr_tool->handles[TRANSFORM_HANDLE_SW] = tr_tool->handles[TRANSFORM_HANDLE_SW] =
gimp_draw_tool_add_handle (draw_tool, gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE, GIMP_HANDLE_SQUARE,
tr_tool->tx3, tr_tool->ty3, tr_tool->tx3, tr_tool->ty3,
handle_w, handle_h, handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER); GIMP_HANDLE_ANCHOR_SOUTH_WEST);
tr_tool->handles[TRANSFORM_HANDLE_SE] = tr_tool->handles[TRANSFORM_HANDLE_SE] =
gimp_draw_tool_add_handle (draw_tool, gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE, GIMP_HANDLE_SQUARE,
tr_tool->tx4, tr_tool->ty4, tr_tool->tx4, tr_tool->ty4,
handle_w, handle_h, handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER); GIMP_HANDLE_ANCHOR_SOUTH_EAST);
if (tr_tool->use_mid_handles) /* draw the perspective handles */
{ tr_tool->handles[TRANSFORM_HANDLE_NW_P] =
gdouble x, y; gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx1, tr_tool->ty1,
handle_w/4*3, handle_h/4*3,
GIMP_HANDLE_ANCHOR_SOUTH_EAST);
x = (tr_tool->tx1 + tr_tool->tx2) / 2.0; tr_tool->handles[TRANSFORM_HANDLE_NE_P] =
y = (tr_tool->ty1 + tr_tool->ty2) / 2.0; gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx2, tr_tool->ty2,
handle_w/4*3, handle_h/4*3,
GIMP_HANDLE_ANCHOR_SOUTH_WEST);
tr_tool->handles[TRANSFORM_HANDLE_N] = tr_tool->handles[TRANSFORM_HANDLE_SW_P] =
gimp_draw_tool_add_handle (draw_tool, gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE, GIMP_HANDLE_SQUARE,
x, y, tr_tool->tx3, tr_tool->ty3,
handle_w, handle_h, handle_w/4*3, handle_h/4*3,
GIMP_HANDLE_ANCHOR_CENTER); GIMP_HANDLE_ANCHOR_NORTH_EAST);
x = (tr_tool->tx2 + tr_tool->tx4) / 2.0; tr_tool->handles[TRANSFORM_HANDLE_SE_P] =
y = (tr_tool->ty2 + tr_tool->ty4) / 2.0; gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx4, tr_tool->ty4,
handle_w/4*3, handle_h/4*3,
GIMP_HANDLE_ANCHOR_NORTH_WEST);
tr_tool->handles[TRANSFORM_HANDLE_E] = /* draw the side handles */
gimp_draw_tool_add_handle (draw_tool, x = (tr_tool->tx1 + tr_tool->tx2) / 2.0;
GIMP_HANDLE_SQUARE, y = (tr_tool->ty1 + tr_tool->ty2) / 2.0;
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
x = (tr_tool->tx3 + tr_tool->tx4) / 2.0; tr_tool->handles[TRANSFORM_HANDLE_N] =
y = (tr_tool->ty3 + tr_tool->ty4) / 2.0; gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
tr_tool->handles[TRANSFORM_HANDLE_S] = x = (tr_tool->tx2 + tr_tool->tx4) / 2.0;
gimp_draw_tool_add_handle (draw_tool, y = (tr_tool->ty2 + tr_tool->ty4) / 2.0;
GIMP_HANDLE_SQUARE,
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
x = (tr_tool->tx3 + tr_tool->tx1) / 2.0; tr_tool->handles[TRANSFORM_HANDLE_E] =
y = (tr_tool->ty3 + tr_tool->ty1) / 2.0; gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
tr_tool->handles[TRANSFORM_HANDLE_W] = x = (tr_tool->tx3 + tr_tool->tx4) / 2.0;
gimp_draw_tool_add_handle (draw_tool, y = (tr_tool->ty3 + tr_tool->ty4) / 2.0;
GIMP_HANDLE_SQUARE,
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
}
}
if (tr_tool->use_pivot) tr_tool->handles[TRANSFORM_HANDLE_S] =
{ gimp_draw_tool_add_handle (draw_tool,
GimpCanvasGroup *stroke_group; GIMP_HANDLE_SQUARE,
gint d = MIN (handle_w, handle_h) * 2; /* so you can grab it from under the center handle */ x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool); x = (tr_tool->tx3 + tr_tool->tx1) / 2.0;
y = (tr_tool->ty3 + tr_tool->ty1) / 2.0;
tr_tool->handles[TRANSFORM_HANDLE_PIVOT] = GIMP_CANVAS_ITEM (stroke_group); tr_tool->handles[TRANSFORM_HANDLE_W] =
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_push_group (draw_tool, stroke_group); /* draw the shear handles */
x = (tr_tool->tx1 * 2 + tr_tool->tx2 * 3) / 5;
y = (tr_tool->ty1 * 2 + tr_tool->ty2 * 3) / 5;
gimp_draw_tool_add_handle (draw_tool, tr_tool->handles[TRANSFORM_HANDLE_N_S] =
GIMP_HANDLE_SQUARE, gimp_draw_tool_add_handle (draw_tool,
tr_tool->tpx, tr_tool->tpy, GIMP_HANDLE_FILLED_DIAMOND,
d, d, x, y,
GIMP_HANDLE_ANCHOR_CENTER); handle_w, handle_h,
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_ANCHOR_CENTER);
GIMP_HANDLE_CROSS,
tr_tool->tpx, tr_tool->tpy,
d, d,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_pop_group (draw_tool); x = (tr_tool->tx2 * 2 + tr_tool->tx4 * 3) / 5;
} y = (tr_tool->ty2 * 2 + tr_tool->ty4 * 3) / 5;
/* draw the center */ tr_tool->handles[TRANSFORM_HANDLE_E_S] =
if (tr_tool->use_center) gimp_draw_tool_add_handle (draw_tool,
{ GIMP_HANDLE_FILLED_DIAMOND,
GimpCanvasGroup *stroke_group; x, y,
gint d = MIN (handle_w, handle_h); handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool); x = (tr_tool->tx3 * 3 + tr_tool->tx4 * 2) / 5;
y = (tr_tool->ty3 * 3 + tr_tool->ty4 * 2) / 5;
tr_tool->handles[TRANSFORM_HANDLE_CENTER] = GIMP_CANVAS_ITEM (stroke_group); tr_tool->handles[TRANSFORM_HANDLE_S_S] =
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_FILLED_DIAMOND,
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_push_group (draw_tool, stroke_group); x = (tr_tool->tx3 * 3 + tr_tool->tx1 * 2) / 5;
y = (tr_tool->ty3 * 3 + tr_tool->ty1 * 2) / 5;
gimp_draw_tool_add_handle (draw_tool, tr_tool->handles[TRANSFORM_HANDLE_W_S] =
GIMP_HANDLE_CIRCLE, gimp_draw_tool_add_handle (draw_tool,
tr_tool->tcx, tr_tool->tcy, GIMP_HANDLE_FILLED_DIAMOND,
d, d, x, y,
GIMP_HANDLE_ANCHOR_CENTER); handle_w, handle_h,
gimp_draw_tool_add_handle (draw_tool, GIMP_HANDLE_ANCHOR_CENTER);
GIMP_HANDLE_CROSS,
tr_tool->tcx, tr_tool->tcy,
d, d,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_pop_group (draw_tool);
} /* draw the rotation handle */
x = (tr_tool->tx1 * 3 + tr_tool->tx2 * 2) / 5;
y = (tr_tool->ty1 * 3 + tr_tool->ty2 * 2) / 5;
tr_tool->handles[TRANSFORM_HANDLE_ROTATION] =
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_FILLED_CIRCLE,
x, y,
handle_w, handle_h,
GIMP_HANDLE_ANCHOR_CENTER);
/* draw the rotation center axis handle */
d = MIN (handle_w, handle_h) * 2; /* so you can grab it from under the center handle */
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool);
tr_tool->handles[TRANSFORM_HANDLE_PIVOT] = GIMP_CANVAS_ITEM (stroke_group);
gimp_draw_tool_push_group (draw_tool, stroke_group);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tpx, tr_tool->tpy,
d, d,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
tr_tool->tpx, tr_tool->tpy,
d, d,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_pop_group (draw_tool);
/* draw the move handle */
d = MIN (handle_w, handle_h);
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool);
tr_tool->handles[TRANSFORM_HANDLE_CENTER] = GIMP_CANVAS_ITEM (stroke_group);
gimp_draw_tool_push_group (draw_tool, stroke_group);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CIRCLE,
tr_tool->tcx, tr_tool->tcy,
d, d,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
tr_tool->tcx, tr_tool->tcy,
d, d,
GIMP_HANDLE_ANCHOR_CENTER);
gimp_draw_tool_pop_group (draw_tool);
if (tr_tool->handles[tr_tool->function]) if (tr_tool->handles[tr_tool->function])
{ {
@ -348,6 +418,7 @@ gimp_unified_transform_tool_draw (GimpDrawTool *draw_tool)
TRUE); TRUE);
} }
/* the rest of the function is the same as in the parent class */
if (options->type == GIMP_TRANSFORM_TYPE_SELECTION) if (options->type == GIMP_TRANSFORM_TYPE_SELECTION)
{ {
GimpMatrix3 matrix = tr_tool->transform; GimpMatrix3 matrix = tr_tool->transform;
@ -698,6 +769,9 @@ gimp_unified_transform_tool_motion (GimpTransformTool *transform_tool)
return; return;
} }
case TRANSFORM_HANDLE_CENTER: case TRANSFORM_HANDLE_CENTER:
if (options->constrain) {
diff_y = diff_x;
}
*x[0] += diff_x; *x[0] += diff_x;
*y[0] += diff_y; *y[0] += diff_y;
*x[1] += diff_x; *x[1] += diff_x;