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Gimp/app/tools/gimpdrawtool.c
Jehan a98b6581e6 Bug 699185 - when moving the pointer fast out of guide scope, do not keep it highlighted. 
When a drawing timeout happens too close from the previous drawing, we don't want to cancel
the timeout function (FALSE), but simply retry later (TRUE).

In our case in particular, if you move your pointer very fast over a guide, the highlighting
drawing was happening less than MINIMUM_DRAW_INTERVAL before the un-highlighting drawing,
hence canceling the later, which caused the drawing bug.
(cherry picked from commit 3496e178ef)
2013-05-12 05:25:49 +09:00

1297 lines
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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "tools-types.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "vectors/gimpanchor.h"
#include "vectors/gimpstroke.h"
#include "vectors/gimpvectors.h"
#include "display/gimpcanvas.h"
#include "display/gimpcanvasarc.h"
#include "display/gimpcanvasboundary.h"
#include "display/gimpcanvascorner.h"
#include "display/gimpcanvasgroup.h"
#include "display/gimpcanvasguide.h"
#include "display/gimpcanvashandle.h"
#include "display/gimpcanvasitem-utils.h"
#include "display/gimpcanvasline.h"
#include "display/gimpcanvaspath.h"
#include "display/gimpcanvaspen.h"
#include "display/gimpcanvaspolygon.h"
#include "display/gimpcanvasrectangle.h"
#include "display/gimpcanvasrectangleguides.h"
#include "display/gimpcanvassamplepoint.h"
#include "display/gimpcanvastextcursor.h"
#include "display/gimpcanvastransformguides.h"
#include "display/gimpcanvastransformpreview.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-items.h"
#include "display/gimpdisplayshell-transform.h"
#include "gimpdrawtool.h"
#define DRAW_TIMEOUT 4
#define USE_TIMEOUT 1
#define MINIMUM_DRAW_INTERVAL 50000 /* 50000 microseconds == 20 fps */
static void gimp_draw_tool_dispose (GObject *object);
static gboolean gimp_draw_tool_has_display (GimpTool *tool,
GimpDisplay *display);
static GimpDisplay * gimp_draw_tool_has_image (GimpTool *tool,
GimpImage *image);
static void gimp_draw_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_draw_tool_draw (GimpDrawTool *draw_tool);
static void gimp_draw_tool_undraw (GimpDrawTool *draw_tool);
static void gimp_draw_tool_real_draw (GimpDrawTool *draw_tool);
G_DEFINE_TYPE (GimpDrawTool, gimp_draw_tool, GIMP_TYPE_TOOL)
#define parent_class gimp_draw_tool_parent_class
static void
gimp_draw_tool_class_init (GimpDrawToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
object_class->dispose = gimp_draw_tool_dispose;
tool_class->has_display = gimp_draw_tool_has_display;
tool_class->has_image = gimp_draw_tool_has_image;
tool_class->control = gimp_draw_tool_control;
klass->draw = gimp_draw_tool_real_draw;
}
static void
gimp_draw_tool_init (GimpDrawTool *draw_tool)
{
draw_tool->display = NULL;
draw_tool->paused_count = 0;
draw_tool->preview = NULL;
draw_tool->item = NULL;
}
static void
gimp_draw_tool_dispose (GObject *object)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (object);
if (draw_tool->draw_timeout)
{
g_source_remove (draw_tool->draw_timeout);
draw_tool->draw_timeout = 0;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static gboolean
gimp_draw_tool_has_display (GimpTool *tool,
GimpDisplay *display)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
return (display == draw_tool->display ||
GIMP_TOOL_CLASS (parent_class)->has_display (tool, display));
}
static GimpDisplay *
gimp_draw_tool_has_image (GimpTool *tool,
GimpImage *image)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpDisplay *display;
display = GIMP_TOOL_CLASS (parent_class)->has_image (tool, image);
if (! display && draw_tool->display)
{
if (image && gimp_display_get_image (draw_tool->display) == image)
display = draw_tool->display;
/* NULL image means any display */
if (! image)
display = draw_tool->display;
}
return display;
}
static void
gimp_draw_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_stop (draw_tool);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
#ifdef USE_TIMEOUT
static gboolean
gimp_draw_tool_draw_timeout (GimpDrawTool *draw_tool)
{
guint64 now = g_get_monotonic_time ();
/* keep the timeout running if the last drawing just happened */
if ((now - draw_tool->last_draw_time) <= MINIMUM_DRAW_INTERVAL)
return TRUE;
draw_tool->draw_timeout = 0;
gimp_draw_tool_draw (draw_tool);
return FALSE;
}
#endif
static void
gimp_draw_tool_draw (GimpDrawTool *draw_tool)
{
guint64 now = g_get_monotonic_time ();
if (draw_tool->display &&
draw_tool->paused_count == 0 &&
(! draw_tool->draw_timeout ||
(now - draw_tool->last_draw_time) > MINIMUM_DRAW_INTERVAL))
{
GimpDisplayShell *shell = gimp_display_get_shell (draw_tool->display);
if (draw_tool->draw_timeout)
{
g_source_remove (draw_tool->draw_timeout);
draw_tool->draw_timeout = 0;
}
gimp_draw_tool_undraw (draw_tool);
GIMP_DRAW_TOOL_GET_CLASS (draw_tool)->draw (draw_tool);
if (draw_tool->group_stack)
{
g_warning ("%s: draw_tool->group_stack not empty after calling "
"GimpDrawTool::draw() of %s",
G_STRFUNC,
g_type_name (G_TYPE_FROM_INSTANCE (draw_tool)));
while (draw_tool->group_stack)
gimp_draw_tool_pop_group (draw_tool);
}
if (draw_tool->preview)
gimp_display_shell_add_preview_item (shell, draw_tool->preview);
if (draw_tool->item)
gimp_display_shell_add_tool_item (shell, draw_tool->item);
draw_tool->last_draw_time = now;
}
}
static void
gimp_draw_tool_undraw (GimpDrawTool *draw_tool)
{
if (draw_tool->display)
{
GimpDisplayShell *shell = gimp_display_get_shell (draw_tool->display);
if (draw_tool->preview)
{
gimp_display_shell_remove_preview_item (shell, draw_tool->preview);
g_object_unref (draw_tool->preview);
draw_tool->preview = NULL;
}
if (draw_tool->item)
{
gimp_display_shell_remove_tool_item (shell, draw_tool->item);
g_object_unref (draw_tool->item);
draw_tool->item = NULL;
}
}
}
static void
gimp_draw_tool_real_draw (GimpDrawTool *draw_tool)
{
/* the default implementation does nothing */
}
void
gimp_draw_tool_start (GimpDrawTool *draw_tool,
GimpDisplay *display)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (GIMP_IS_DISPLAY (display));
g_return_if_fail (gimp_draw_tool_is_active (draw_tool) == FALSE);
draw_tool->display = display;
gimp_draw_tool_draw (draw_tool);
}
void
gimp_draw_tool_stop (GimpDrawTool *draw_tool)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (gimp_draw_tool_is_active (draw_tool) == TRUE);
gimp_draw_tool_undraw (draw_tool);
if (draw_tool->draw_timeout)
{
g_source_remove (draw_tool->draw_timeout);
draw_tool->draw_timeout = 0;
}
draw_tool->last_draw_time = 0;
draw_tool->display = NULL;
}
gboolean
gimp_draw_tool_is_active (GimpDrawTool *draw_tool)
{
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE);
return draw_tool->display != NULL;
}
void
gimp_draw_tool_pause (GimpDrawTool *draw_tool)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
draw_tool->paused_count++;
if (draw_tool->draw_timeout)
{
g_source_remove (draw_tool->draw_timeout);
draw_tool->draw_timeout = 0;
}
}
void
gimp_draw_tool_resume (GimpDrawTool *draw_tool)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (draw_tool->paused_count > 0);
draw_tool->paused_count--;
if (draw_tool->paused_count == 0)
{
#ifdef USE_TIMEOUT
/* Don't install the timeout if the draw tool isn't active, so
* suspend()/resume() can always be called, and have no side
* effect on an inactive tool. See bug #687851.
*/
if (gimp_draw_tool_is_active (draw_tool) && ! draw_tool->draw_timeout)
{
draw_tool->draw_timeout =
gdk_threads_add_timeout_full (G_PRIORITY_HIGH_IDLE,
DRAW_TIMEOUT,
(GSourceFunc) gimp_draw_tool_draw_timeout,
draw_tool, NULL);
}
#endif
/* call draw() anyway, it will do nothing if the timeout is
* running, but will additionally check the drawing times to
* ensure the minimum framerate
*/
gimp_draw_tool_draw (draw_tool);
}
}
/**
* gimp_draw_tool_calc_distance:
* @draw_tool: a #GimpDrawTool
* @display: a #GimpDisplay
* @x1: start point X in image coordinates
* @y1: start point Y in image coordinates
* @x2: end point X in image coordinates
* @y2: end point Y in image coordinates
*
* If you just need to compare distances, consider to use
* gimp_draw_tool_calc_distance_square() instead.
*
* Returns: the distance between the given points in display coordinates
**/
gdouble
gimp_draw_tool_calc_distance (GimpDrawTool *draw_tool,
GimpDisplay *display,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2)
{
return sqrt (gimp_draw_tool_calc_distance_square (draw_tool, display,
x1, y1, x2, y2));
}
/**
* gimp_draw_tool_calc_distance_square:
* @draw_tool: a #GimpDrawTool
* @display: a #GimpDisplay
* @x1: start point X in image coordinates
* @y1: start point Y in image coordinates
* @x2: end point X in image coordinates
* @y2: end point Y in image coordinates
*
* This function is more effective than gimp_draw_tool_calc_distance()
* as it doesn't perform a sqrt(). Use this if you just need to compare
* distances.
*
* Returns: the square of the distance between the given points in
* display coordinates
**/
gdouble
gimp_draw_tool_calc_distance_square (GimpDrawTool *draw_tool,
GimpDisplay *display,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2)
{
GimpDisplayShell *shell;
gdouble tx1, ty1;
gdouble tx2, ty2;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), 0.0);
g_return_val_if_fail (GIMP_IS_DISPLAY (display), 0.0);
shell = gimp_display_get_shell (display);
gimp_display_shell_transform_xy_f (shell, x1, y1, &tx1, &ty1);
gimp_display_shell_transform_xy_f (shell, x2, y2, &tx2, &ty2);
return SQR (tx2 - tx1) + SQR (ty2 - ty1);
}
void
gimp_draw_tool_add_preview (GimpDrawTool *draw_tool,
GimpCanvasItem *item)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
if (! draw_tool->preview)
draw_tool->preview =
gimp_canvas_group_new (gimp_display_get_shell (draw_tool->display));
gimp_canvas_group_add_item (GIMP_CANVAS_GROUP (draw_tool->preview), item);
}
void
gimp_draw_tool_remove_preview (GimpDrawTool *draw_tool,
GimpCanvasItem *item)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
g_return_if_fail (draw_tool->preview != NULL);
gimp_canvas_group_remove_item (GIMP_CANVAS_GROUP (draw_tool->preview), item);
}
void
gimp_draw_tool_add_item (GimpDrawTool *draw_tool,
GimpCanvasItem *item)
{
GimpCanvasGroup *group;
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
if (! draw_tool->item)
draw_tool->item =
gimp_canvas_group_new (gimp_display_get_shell (draw_tool->display));
group = GIMP_CANVAS_GROUP (draw_tool->item);
if (draw_tool->group_stack)
group = draw_tool->group_stack->data;
gimp_canvas_group_add_item (group, item);
}
void
gimp_draw_tool_remove_item (GimpDrawTool *draw_tool,
GimpCanvasItem *item)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
g_return_if_fail (draw_tool->item != NULL);
gimp_canvas_group_remove_item (GIMP_CANVAS_GROUP (draw_tool->item), item);
}
GimpCanvasGroup *
gimp_draw_tool_add_stroke_group (GimpDrawTool *draw_tool)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_group_new (gimp_display_get_shell (draw_tool->display));
gimp_canvas_group_set_group_stroking (GIMP_CANVAS_GROUP (item), TRUE);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return GIMP_CANVAS_GROUP (item);
}
GimpCanvasGroup *
gimp_draw_tool_add_fill_group (GimpDrawTool *draw_tool)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_group_new (gimp_display_get_shell (draw_tool->display));
gimp_canvas_group_set_group_filling (GIMP_CANVAS_GROUP (item), TRUE);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return GIMP_CANVAS_GROUP (item);
}
void
gimp_draw_tool_push_group (GimpDrawTool *draw_tool,
GimpCanvasGroup *group)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
draw_tool->group_stack = g_list_prepend (draw_tool->group_stack, group);
}
void
gimp_draw_tool_pop_group (GimpDrawTool *draw_tool)
{
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
g_return_if_fail (draw_tool->group_stack != NULL);
draw_tool->group_stack = g_list_remove (draw_tool->group_stack,
draw_tool->group_stack->data);
}
/**
* gimp_draw_tool_add_line:
* @draw_tool: the #GimpDrawTool
* @x1: start point X in image coordinates
* @y1: start point Y in image coordinates
* @x2: end point X in image coordinates
* @y2: end point Y in image coordinates
*
* This function takes image space coordinates and transforms them to
* screen window coordinates, then draws a line between the resulting
* coordindates.
**/
GimpCanvasItem *
gimp_draw_tool_add_line (GimpDrawTool *draw_tool,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_line_new (gimp_display_get_shell (draw_tool->display),
x1, y1, x2, y2);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
/**
* gimp_draw_tool_add_guide:
* @draw_tool: the #GimpDrawTool
* @orientation: the orientation of the guide line
* @position: the position of the guide line in image coordinates
*
* This function draws a guide line across the canvas.
**/
GimpCanvasItem *
gimp_draw_tool_add_guide (GimpDrawTool *draw_tool,
GimpOrientationType orientation,
gint position,
gboolean guide_style)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_guide_new (gimp_display_get_shell (draw_tool->display),
orientation, position, guide_style);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
/**
* gimp_draw_tool_add_crosshair:
* @draw_tool: the #GimpDrawTool
* @position_x: the position of the vertical guide line in image coordinates
* @position_y: the position of the horizontal guide line in image coordinates
*
* This function draws two crossing guide lines across the canvas.
**/
GimpCanvasItem *
gimp_draw_tool_add_crosshair (GimpDrawTool *draw_tool,
gint position_x,
gint position_y)
{
GimpCanvasGroup *group;
group = gimp_draw_tool_add_stroke_group (draw_tool);
gimp_draw_tool_push_group (draw_tool, group);
gimp_draw_tool_add_guide (draw_tool,
GIMP_ORIENTATION_VERTICAL, position_x, FALSE);
gimp_draw_tool_add_guide (draw_tool,
GIMP_ORIENTATION_HORIZONTAL, position_y, FALSE);
gimp_draw_tool_pop_group (draw_tool);
return GIMP_CANVAS_ITEM (group);
}
/**
* gimp_draw_tool_add_sample_point:
* @draw_tool: the #GimpDrawTool
* @x: X position of the sample point
* @y: Y position of the sample point
* @index: Index of the sample point
*
* This function draws a sample point
**/
GimpCanvasItem *
gimp_draw_tool_add_sample_point (GimpDrawTool *draw_tool,
gint x,
gint y,
gint index)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_sample_point_new (gimp_display_get_shell (draw_tool->display),
x, y, index, TRUE);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
/**
* gimp_draw_tool_add_rectangle:
* @draw_tool: the #GimpDrawTool
* @filled: whether to fill the rectangle
* @x: horizontal image coordinate
* @y: vertical image coordinate
* @width: width in image coordinates
* @height: height in image coordinates
*
* This function takes image space coordinates and transforms them to
* screen window coordinates, then draws the resulting rectangle.
**/
GimpCanvasItem *
gimp_draw_tool_add_rectangle (GimpDrawTool *draw_tool,
gboolean filled,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_rectangle_new (gimp_display_get_shell (draw_tool->display),
x, y, width, height, filled);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_rectangle_guides (GimpDrawTool *draw_tool,
GimpGuidesType type,
gdouble x,
gdouble y,
gdouble width,
gdouble height)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_rectangle_guides_new (gimp_display_get_shell (draw_tool->display),
x, y, width, height, type, 4);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_arc (GimpDrawTool *draw_tool,
gboolean filled,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
gdouble start_angle,
gdouble slice_angle)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_arc_new (gimp_display_get_shell (draw_tool->display),
x + width / 2.0,
y + height / 2.0,
width / 2.0,
height / 2.0,
start_angle,
slice_angle,
filled);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_handle (GimpDrawTool *draw_tool,
GimpHandleType type,
gdouble x,
gdouble y,
gint width,
gint height,
GimpHandleAnchor anchor)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_handle_new (gimp_display_get_shell (draw_tool->display),
type, anchor, x, y, width, height);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
/**
* gimp_draw_tool_add_corner:
* @draw_tool: the #GimpDrawTool
* @highlight:
* @put_outside: whether to put the handles on the outside of the rectangle
* @x1:
* @y1:
* @x2:
* @y2:
* @width: corner width
* @height: corner height
* @anchor: which corner to draw
*
* This function takes image space coordinates and transforms them to
* screen window coordinates. It draws a corner into an already drawn
* rectangle outline, taking care of not drawing over an already drawn line.
**/
GimpCanvasItem *
gimp_draw_tool_add_corner (GimpDrawTool *draw_tool,
gboolean highlight,
gboolean put_outside,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gint width,
gint height,
GimpHandleAnchor anchor)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_corner_new (gimp_display_get_shell (draw_tool->display),
x1, y1, x2 - x1, y2 - y1,
anchor, width, height, put_outside);
gimp_canvas_item_set_highlight (item, highlight);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_lines (GimpDrawTool *draw_tool,
const GimpVector2 *points,
gint n_points,
gboolean filled)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
if (points == NULL || n_points < 2)
return NULL;
item = gimp_canvas_polygon_new (gimp_display_get_shell (draw_tool->display),
points, n_points, filled);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_strokes (GimpDrawTool *draw_tool,
const GimpCoords *points,
gint n_points,
gboolean filled)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
if (points == NULL || n_points < 2)
return NULL;
item = gimp_canvas_polygon_new_from_coords (gimp_display_get_shell (draw_tool->display),
points, n_points, filled);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_path (GimpDrawTool *draw_tool,
const GimpBezierDesc *desc,
gdouble x,
gdouble y)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
g_return_val_if_fail (desc != NULL, NULL);
item = gimp_canvas_path_new (gimp_display_get_shell (draw_tool->display),
desc, x, y, FALSE, GIMP_PATH_STYLE_DEFAULT);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_pen (GimpDrawTool *draw_tool,
const GimpVector2 *points,
gint n_points,
GimpContext *context,
GimpActiveColor color,
gint width)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
if (points == NULL || n_points < 2)
return NULL;
item = gimp_canvas_pen_new (gimp_display_get_shell (draw_tool->display),
points, n_points, context, color, width);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
/**
* gimp_draw_tool_add_boundary:
* @draw_tool: a #GimpDrawTool
* @bound_segs: the sorted brush outline
* @n_bound_segs: the number of segments in @bound_segs
* @matrix: transform matrix for the boundary
* @offset_x: x offset
* @offset_y: y offset
*
* Draw the boundary of the brush that @draw_tool uses. The boundary
* should be sorted with sort_boundary(), and @n_bound_segs should
* include the sentinel segments inserted by sort_boundary() that
* indicate the end of connected segment sequences (groups) .
*/
GimpCanvasItem *
gimp_draw_tool_add_boundary (GimpDrawTool *draw_tool,
const BoundSeg *bound_segs,
gint n_bound_segs,
GimpMatrix3 *transform,
gdouble offset_x,
gdouble offset_y)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
g_return_val_if_fail (n_bound_segs > 0, NULL);
g_return_val_if_fail (bound_segs != NULL, NULL);
item = gimp_canvas_boundary_new (gimp_display_get_shell (draw_tool->display),
bound_segs, n_bound_segs,
transform,
offset_x, offset_y);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_text_cursor (GimpDrawTool *draw_tool,
PangoRectangle *cursor,
gboolean overwrite)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
item = gimp_canvas_text_cursor_new (gimp_display_get_shell (draw_tool->display),
cursor, overwrite);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_transform_guides (GimpDrawTool *draw_tool,
const GimpMatrix3 *transform,
GimpGuidesType type,
gint n_guides,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
g_return_val_if_fail (transform != NULL, NULL);
item = gimp_canvas_transform_guides_new (gimp_display_get_shell (draw_tool->display),
transform, x1, y1, x2, y2,
type, n_guides);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_transform_preview (GimpDrawTool *draw_tool,
GimpDrawable *drawable,
const GimpMatrix3 *transform,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gboolean perspective,
gdouble opacity)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (transform != NULL, NULL);
item = gimp_canvas_transform_preview_new (gimp_display_get_shell (draw_tool->display),
drawable, transform,
x1, y1, x2, y2,
perspective, opacity);
gimp_draw_tool_add_preview (draw_tool, item);
g_object_unref (item);
return item;
}
gboolean
gimp_draw_tool_on_handle (GimpDrawTool *draw_tool,
GimpDisplay *display,
gdouble x,
gdouble y,
GimpHandleType type,
gdouble handle_x,
gdouble handle_y,
gint width,
gint height,
GimpHandleAnchor anchor)
{
GimpDisplayShell *shell;
gdouble tx, ty;
gdouble handle_tx, handle_ty;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE);
g_return_val_if_fail (GIMP_IS_DISPLAY (display), FALSE);
shell = gimp_display_get_shell (display);
gimp_display_shell_transform_xy_f (shell,
x, y,
&tx, &ty);
gimp_display_shell_transform_xy_f (shell,
handle_x, handle_y,
&handle_tx, &handle_ty);
switch (type)
{
case GIMP_HANDLE_SQUARE:
case GIMP_HANDLE_FILLED_SQUARE:
case GIMP_HANDLE_CROSS:
gimp_canvas_item_shift_to_north_west (anchor,
handle_tx, handle_ty,
width, height,
&handle_tx, &handle_ty);
return (tx == CLAMP (tx, handle_tx, handle_tx + width) &&
ty == CLAMP (ty, handle_ty, handle_ty + height));
case GIMP_HANDLE_CIRCLE:
case GIMP_HANDLE_FILLED_CIRCLE:
gimp_canvas_item_shift_to_center (anchor,
handle_tx, handle_ty,
width, height,
&handle_tx, &handle_ty);
/* FIXME */
if (width != height)
width = (width + height) / 2;
width /= 2;
return ((SQR (handle_tx - tx) + SQR (handle_ty - ty)) < SQR (width));
default:
g_warning ("%s: invalid handle type %d", G_STRFUNC, type);
break;
}
return FALSE;
}
gboolean
gimp_draw_tool_on_vectors_handle (GimpDrawTool *draw_tool,
GimpDisplay *display,
GimpVectors *vectors,
const GimpCoords *coord,
gint width,
gint height,
GimpAnchorType preferred,
gboolean exclusive,
GimpAnchor **ret_anchor,
GimpStroke **ret_stroke)
{
GimpStroke *stroke = NULL;
GimpStroke *pref_stroke = NULL;
GimpAnchor *anchor = NULL;
GimpAnchor *pref_anchor = NULL;
gdouble dx, dy;
gdouble pref_mindist = -1;
gdouble mindist = -1;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE);
g_return_val_if_fail (GIMP_IS_DISPLAY (display), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (coord != NULL, FALSE);
if (ret_anchor) *ret_anchor = NULL;
if (ret_stroke) *ret_stroke = NULL;
while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke)))
{
GList *anchor_list;
GList *list;
anchor_list = g_list_concat (gimp_stroke_get_draw_anchors (stroke),
gimp_stroke_get_draw_controls (stroke));
for (list = anchor_list; list; list = g_list_next (list))
{
dx = coord->x - GIMP_ANCHOR (list->data)->position.x;
dy = coord->y - GIMP_ANCHOR (list->data)->position.y;
if (mindist < 0 || mindist > dx * dx + dy * dy)
{
mindist = dx * dx + dy * dy;
anchor = GIMP_ANCHOR (list->data);
if (ret_stroke)
*ret_stroke = stroke;
}
if ((pref_mindist < 0 || pref_mindist > dx * dx + dy * dy) &&
GIMP_ANCHOR (list->data)->type == preferred)
{
pref_mindist = dx * dx + dy * dy;
pref_anchor = GIMP_ANCHOR (list->data);
pref_stroke = stroke;
}
}
g_list_free (anchor_list);
}
/* If the data passed into ret_anchor is a preferred anchor, return it. */
if (ret_anchor && *ret_anchor &&
gimp_draw_tool_on_handle (draw_tool, display,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
(*ret_anchor)->position.x,
(*ret_anchor)->position.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER) &&
(*ret_anchor)->type == preferred)
{
if (ret_stroke) *ret_stroke = pref_stroke;
return TRUE;
}
if (pref_anchor && gimp_draw_tool_on_handle (draw_tool, display,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
pref_anchor->position.x,
pref_anchor->position.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER))
{
if (ret_anchor) *ret_anchor = pref_anchor;
if (ret_stroke) *ret_stroke = pref_stroke;
return TRUE;
}
else if (!exclusive && anchor &&
gimp_draw_tool_on_handle (draw_tool, display,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
anchor->position.x,
anchor->position.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER))
{
if (ret_anchor)
*ret_anchor = anchor;
/* *ret_stroke already set correctly. */
return TRUE;
}
if (ret_anchor)
*ret_anchor = NULL;
if (ret_stroke)
*ret_stroke = NULL;
return FALSE;
}
gboolean
gimp_draw_tool_on_vectors_curve (GimpDrawTool *draw_tool,
GimpDisplay *display,
GimpVectors *vectors,
const GimpCoords *coord,
gint width,
gint height,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpAnchor **ret_segment_end,
GimpStroke **ret_stroke)
{
GimpStroke *stroke = NULL;
GimpAnchor *segment_start;
GimpAnchor *segment_end;
GimpCoords min_coords = GIMP_COORDS_DEFAULT_VALUES;
GimpCoords cur_coords;
gdouble min_dist, cur_dist, cur_pos;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE);
g_return_val_if_fail (GIMP_IS_DISPLAY (display), FALSE);
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (coord != NULL, FALSE);
if (ret_coords) *ret_coords = *coord;
if (ret_pos) *ret_pos = -1.0;
if (ret_segment_start) *ret_segment_start = NULL;
if (ret_segment_start) *ret_segment_end = NULL;
if (ret_stroke) *ret_stroke = NULL;
min_dist = -1.0;
while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke)))
{
cur_dist = gimp_stroke_nearest_point_get (stroke, coord, 1.0,
&cur_coords,
&segment_start,
&segment_end,
&cur_pos);
if (cur_dist >= 0 && (min_dist < 0 || cur_dist < min_dist))
{
min_dist = cur_dist;
min_coords = cur_coords;
if (ret_coords) *ret_coords = cur_coords;
if (ret_pos) *ret_pos = cur_pos;
if (ret_segment_start) *ret_segment_start = segment_start;
if (ret_segment_end) *ret_segment_end = segment_end;
if (ret_stroke) *ret_stroke = stroke;
}
}
if (min_dist >= 0 &&
gimp_draw_tool_on_handle (draw_tool, display,
coord->x,
coord->y,
GIMP_HANDLE_CIRCLE,
min_coords.x,
min_coords.y,
width, height,
GIMP_HANDLE_ANCHOR_CENTER))
{
return TRUE;
}
return FALSE;
}
gboolean
gimp_draw_tool_on_vectors (GimpDrawTool *draw_tool,
GimpDisplay *display,
const GimpCoords *coords,
gint width,
gint height,
GimpCoords *ret_coords,
gdouble *ret_pos,
GimpAnchor **ret_segment_start,
GimpAnchor **ret_segment_end,
GimpStroke **ret_stroke,
GimpVectors **ret_vectors)
{
GList *all_vectors;
GList *list;
if (ret_coords) *ret_coords = *coords;
if (ret_pos) *ret_pos = -1.0;
if (ret_segment_start) *ret_segment_start = NULL;
if (ret_segment_end) *ret_segment_end = NULL;
if (ret_stroke) *ret_stroke = NULL;
if (ret_vectors) *ret_vectors = NULL;
all_vectors = gimp_image_get_vectors_list (gimp_display_get_image (display));
for (list = all_vectors; list; list = g_list_next (list))
{
GimpVectors *vectors = list->data;
if (! gimp_item_get_visible (GIMP_ITEM (vectors)))
continue;
if (gimp_draw_tool_on_vectors_curve (draw_tool,
display,
vectors, coords,
width, height,
ret_coords,
ret_pos,
ret_segment_start,
ret_segment_end,
ret_stroke))
{
if (ret_vectors)
*ret_vectors = vectors;
g_list_free (all_vectors);
return TRUE;
}
}
g_list_free (all_vectors);
return FALSE;
}
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