static void
gimp_rotate_tool_motion (GimpTransformTool *tr_tool)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
gdouble angle1, angle2, angle;
gdouble px, py;
gdouble x1, y1, x2, y2;
if (tr_tool->function == TRANSFORM_HANDLE_PIVOT)
{
tr_tool->trans_info[PIVOT_X] = tr_tool->curx;
tr_tool->trans_info[PIVOT_Y] = tr_tool->cury;
return;
}
px = tr_tool->trans_info[PIVOT_X];
py = tr_tool->trans_info[PIVOT_Y];
x1 = tr_tool->curx - px;
x2 = tr_tool->lastx - px;
y1 = py - tr_tool->cury;
y2 = py - tr_tool->lasty;
/* find the first angle */
angle1 = atan2 (y1, x1);
/* find the angle */
angle2 = atan2 (y2, x2);
angle = angle2 - angle1;
if (angle > G_PI || angle < -G_PI)
angle = angle2 - ((angle1 < 0) ? 2.0 * G_PI + angle1 : angle1 - 2.0 * G_PI);
/* increment the transform tool's angle */
tr_tool->trans_info[REAL_ANGLE] += angle;
/* limit the angle to between -180 and 180 degrees */
if (tr_tool->trans_info[REAL_ANGLE] < - G_PI)
{
tr_tool->trans_info[REAL_ANGLE] += 2.0 * G_PI;
}
else if (tr_tool->trans_info[REAL_ANGLE] > G_PI)
{
tr_tool->trans_info[REAL_ANGLE] -= 2.0 * G_PI;
}
/* constrain the angle to 15-degree multiples if ctrl is held down */
if (options->constrain_rotate)
{
tr_tool->trans_info[ANGLE] =
FIFTEEN_DEG * (gint) ((tr_tool->trans_info[REAL_ANGLE] +
FIFTEEN_DEG / 2.0) / FIFTEEN_DEG);
}
else
{
tr_tool->trans_info[ANGLE] = tr_tool->trans_info[REAL_ANGLE];
}
}
static void
gimp_scale_tool_dialog_update (GimpTransformTool *tr_tool)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
gint width = ROUND (tr_tool->trans_info[X1] - tr_tool->trans_info[X0]);
gint height = ROUND (tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0]);
g_object_set (GIMP_SCALE_TOOL (tr_tool)->box,
"width", width,
"height", height,
"keep-aspect", options->constrain,
NULL);
}
static void
gimp_scale_tool_prepare (GimpTransformTool *tr_tool)
{
GimpScaleTool *scale = GIMP_SCALE_TOOL (tr_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpDisplay *display = GIMP_TOOL (tr_tool)->display;
gdouble xres;
gdouble yres;
tr_tool->trans_info[X0] = (gdouble) tr_tool->x1;
tr_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
tr_tool->trans_info[X1] = (gdouble) tr_tool->x2;
tr_tool->trans_info[Y1] = (gdouble) tr_tool->y2;
gimp_image_get_resolution (gimp_display_get_image (display),
&xres, &yres);
if (scale->box)
{
g_signal_handlers_disconnect_by_func (scale->box,
gimp_scale_tool_size_notify,
tr_tool);
gtk_widget_destroy (scale->box);
}
/* Need to create a new GimpSizeBox widget because the initial
* width and height is what counts as 100%.
*/
scale->box =
g_object_new (GIMP_TYPE_SIZE_BOX,
"width", tr_tool->x2 - tr_tool->x1,
"height", tr_tool->y2 - tr_tool->y1,
"keep-aspect", options->constrain_scale,
"unit", gimp_display_get_shell (display)->unit,
"xresolution", xres,
"yresolution", yres,
NULL);
gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (tr_tool->gui)),
scale->box, FALSE, FALSE, 0);
gtk_widget_show (scale->box);
g_signal_connect (scale->box, "notify",
G_CALLBACK (gimp_scale_tool_size_notify),
tr_tool);
}
static void
gimp_scale_tool_prepare (GimpTransformTool *tr_tool,
GimpDisplay *display)
{
GimpScaleTool *scale = GIMP_SCALE_TOOL (tr_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
tr_tool->trans_info[X0] = (gdouble) tr_tool->x1;
tr_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
tr_tool->trans_info[X1] = (gdouble) tr_tool->x2;
tr_tool->trans_info[Y1] = (gdouble) tr_tool->y2;
if (scale->box)
{
g_signal_handlers_disconnect_by_func (scale->box,
gimp_scale_tool_size_notify,
tr_tool);
gtk_widget_destroy (scale->box);
}
/* Need to create a new GimpSizeBox widget because the initial
* width and height is what counts as 100%.
*/
scale->box =
g_object_new (GIMP_TYPE_SIZE_BOX,
"width", tr_tool->x2 - tr_tool->x1,
"height", tr_tool->y2 - tr_tool->y1,
"keep-aspect", options->constrain,
"unit", GIMP_DISPLAY_SHELL (display->shell)->unit,
"xresolution", display->image->xresolution,
"yresolution", display->image->yresolution,
NULL);
gtk_container_set_border_width (GTK_CONTAINER (scale->box), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (tr_tool->dialog)->vbox), scale->box,
FALSE, FALSE, 0);
gtk_widget_show (scale->box);
g_signal_connect (scale->box, "notify",
G_CALLBACK (gimp_scale_tool_size_notify),
tr_tool);
}
static GeglBuffer *
gimp_flip_tool_transform (GimpTransformTool *tr_tool,
GimpItem *active_item,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y)
{
GimpFlipTool *flip = GIMP_FLIP_TOOL (tr_tool);
GimpFlipOptions *options = GIMP_FLIP_TOOL_GET_OPTIONS (tr_tool);
GimpTransformOptions *tr_options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpContext *context = GIMP_CONTEXT (options);
GimpOrientationType flip_type = GIMP_ORIENTATION_UNKNOWN;
gdouble axis = 0.0;
gboolean clip_result = FALSE;
GeglBuffer *ret = NULL;
flip_type = gimp_flip_tool_get_flip_type (flip);
if (flip->guide)
{
axis = gimp_guide_get_position (flip->guide);
}
else
{
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
axis = ((gdouble) tr_tool->x1 +
(gdouble) (tr_tool->x2 - tr_tool->x1) / 2.0);
break;
case GIMP_ORIENTATION_VERTICAL:
axis = ((gdouble) tr_tool->y1 +
(gdouble) (tr_tool->y2 - tr_tool->y1) / 2.0);
break;
default:
break;
}
}
switch (tr_options->clip)
{
case GIMP_TRANSFORM_RESIZE_ADJUST:
clip_result = FALSE;
break;
case GIMP_TRANSFORM_RESIZE_CLIP:
clip_result = TRUE;
break;
default:
g_return_val_if_reached (NULL);
}
if (orig_buffer)
{
/* this happens when transforming a selection cut out of a
* normal drawable, or the selection
*/
/* always clip the selection and unfloated channels
* so they keep their size
*/
if (GIMP_IS_CHANNEL (active_item) &&
! babl_format_has_alpha (gegl_buffer_get_format (orig_buffer)))
clip_result = TRUE;
ret = gimp_drawable_transform_buffer_flip (GIMP_DRAWABLE (active_item),
context,
orig_buffer,
orig_offset_x,
orig_offset_y,
flip_type, axis,
clip_result,
buffer_profile,
new_offset_x,
new_offset_y);
}
else
{
/* this happens for entire drawables, paths and layer groups */
/* always clip layer masks so they keep their size
*/
if (GIMP_IS_CHANNEL (active_item))
clip_result = TRUE;
if (gimp_item_get_linked (active_item))
{
gimp_item_linked_flip (active_item, context,
flip_type, axis, clip_result);
}
else
{
gimp_item_flip (active_item, context,
flip_type, axis, clip_result);
}
}
return ret;
}
static void
gimp_scale_tool_size_notify (GtkWidget *box,
GParamSpec *pspec,
GimpTransformTool *tr_tool)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
if (! strcmp (pspec->name, "width") ||
! strcmp (pspec->name, "height"))
{
gint width;
gint height;
gint old_width;
gint old_height;
g_object_get (box,
"width", &width,
"height", &height,
NULL);
old_width = ROUND (tr_tool->trans_info[X1] - tr_tool->trans_info[X0]);
old_height = ROUND (tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0]);
if ((width != old_width) || (height != old_height))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tr_tool));
tr_tool->trans_info[X1] = tr_tool->trans_info[X0] + width;
tr_tool->trans_info[Y1] = tr_tool->trans_info[Y0] + height;
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
gimp_transform_tool_expose_preview (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
}
else if (! strcmp (pspec->name, "keep-aspect"))
{
gboolean constrain;
g_object_get (box,
"keep-aspect", &constrain,
NULL);
if (constrain != options->constrain)
{
gint width;
gint height;
g_object_get (box,
"width", &width,
"height", &height,
NULL);
/* Take the aspect ratio from the size box when the user
* activates the constraint by pressing the chain button.
*/
tr_tool->aspect = (gdouble) width / (gdouble) height;
g_object_set (options,
"constrain", constrain,
NULL);
}
}
}
static void
gimp_scale_tool_motion (GimpTransformTool *tr_tool,
GimpDisplay *display)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
gdouble *x1;
gdouble *y1;
gdouble *x2;
gdouble *y2;
gint dir_x;
gint dir_y;
gdouble diff_x = tr_tool->curx - tr_tool->lastx;
gdouble diff_y = tr_tool->cury - tr_tool->lasty;
switch (tr_tool->function)
{
case TRANSFORM_HANDLE_N:
diff_x = 0; /* and fall through */
case TRANSFORM_HANDLE_NW:
x1 = &tr_tool->trans_info[X0];
y1 = &tr_tool->trans_info[Y0];
x2 = &tr_tool->trans_info[X1];
y2 = &tr_tool->trans_info[Y1];
dir_x = dir_y = 1;
break;
case TRANSFORM_HANDLE_E:
diff_y = 0; /* and fall through */
case TRANSFORM_HANDLE_NE:
x1 = &tr_tool->trans_info[X1];
y1 = &tr_tool->trans_info[Y0];
x2 = &tr_tool->trans_info[X0];
y2 = &tr_tool->trans_info[Y1];
dir_x = -1;
dir_y = 1;
break;
case TRANSFORM_HANDLE_W:
diff_y = 0; /* and fall through */
case TRANSFORM_HANDLE_SW:
x1 = &tr_tool->trans_info[X0];
y1 = &tr_tool->trans_info[Y1];
x2 = &tr_tool->trans_info[X1];
y2 = &tr_tool->trans_info[Y0];
dir_x = 1;
dir_y = -1;
break;
case TRANSFORM_HANDLE_S:
diff_x = 0; /* and fall through */
case TRANSFORM_HANDLE_SE:
x1 = &tr_tool->trans_info[X1];
y1 = &tr_tool->trans_info[Y1];
x2 = &tr_tool->trans_info[X0];
y2 = &tr_tool->trans_info[Y0];
dir_x = dir_y = -1;
break;
case TRANSFORM_HANDLE_CENTER:
tr_tool->trans_info[X0] += diff_x;
tr_tool->trans_info[Y0] += diff_y;
tr_tool->trans_info[X1] += diff_x;
tr_tool->trans_info[Y1] += diff_y;
tr_tool->trans_info[X2] += diff_x;
tr_tool->trans_info[Y2] += diff_y;
tr_tool->trans_info[X3] += diff_x;
tr_tool->trans_info[Y3] += diff_y;
return;
default:
return;
}
*x1 += diff_x;
*y1 += diff_y;
/* if control is being held, constrain the aspect ratio */
if (options->constrain)
{
/* FIXME: improve this */
gdouble h = tr_tool->trans_info[Y1] - tr_tool->trans_info[Y0];
switch (tr_tool->function)
{
case TRANSFORM_HANDLE_NW:
case TRANSFORM_HANDLE_SW:
tr_tool->trans_info[X0] =
tr_tool->trans_info[X1] - tr_tool->aspect * h;
break;
case TRANSFORM_HANDLE_NE:
case TRANSFORM_HANDLE_SE:
tr_tool->trans_info[X1] =
tr_tool->trans_info[X0] + tr_tool->aspect * h;
break;
default:
break;
}
}
if (dir_x > 0)
{
if (*x1 >= *x2)
*x1 = *x2 - 1;
}
else
{
if (*x1 <= *x2)
*x1 = *x2 + 1;
}
if (dir_y > 0)
{
if (*y1 >= *y2)
*y1 = *y2 - 1;
}
else
{
if (*y1 <= *y2)
*y1 = *y2 + 1;
}
}
