#define INKSCAPE_CTRL_C

#include <2geom/transforms.h>

#include "sp-canvas-util.h"

#include "display-forward.h"

#include "sodipodi-ctrl.h"

#include "libnr/nr-pixops.h"

#include "display/inkscape-cairo.h"

enum {

ARG_0,

ARG_SHAPE,

ARG_MODE,

ARG_ANCHOR,

ARG_SIZE,

ARG_FILLED,

ARG_FILL_COLOR,

ARG_STROKED,

ARG_STROKE_COLOR,

ARG_PIXBUF

};

static void sp_ctrl_class_init (SPCtrlClass *klass);

static void sp_ctrl_init (SPCtrl *ctrl);

static void sp_ctrl_destroy (GtkObject *object);

static void sp_ctrl_set_arg (GtkObject *object, GtkArg *arg, guint arg_id);

static void sp_ctrl_update (SPCanvasItem *item, Geom::Matrix const &affine, unsigned int flags);

static void sp_ctrl_render (SPCanvasItem *item, SPCanvasBuf *buf);

static double sp_ctrl_point (SPCanvasItem *item, Geom::Point p, SPCanvasItem **actual_item);

static SPCanvasItemClass *parent_class;

sp_ctrl_get_type (void)

{

static GtkType ctrl_type = 0;

if (!ctrl_type) {

static GTypeInfo const ctrl_info = {

sizeof (SPCtrlClass),

NULL, /* base_init */

NULL, /* base_finalize */

(GClassInitFunc) sp_ctrl_class_init,

NULL, /* class_finalize */

NULL, /* class_data */

sizeof (SPCtrl),

0, /* n_preallocs */

(GInstanceInitFunc) sp_ctrl_init,

NULL

};

ctrl_type = g_type_register_static (SP_TYPE_CANVAS_ITEM, "SPCtrl", &ctrl_info, (GTypeFlags)0);

}

return ctrl_type;

}

static void

sp_ctrl_class_init (SPCtrlClass *klass)

{

GtkObjectClass *object_class;

SPCanvasItemClass *item_class;

object_class = (GtkObjectClass *) klass;

item_class = (SPCanvasItemClass *) klass;

parent_class = (SPCanvasItemClass *)gtk_type_class (sp_canvas_item_get_type ());

gtk_object_add_arg_type ("SPCtrl::shape", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_SHAPE);

gtk_object_add_arg_type ("SPCtrl::mode", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_MODE);

gtk_object_add_arg_type ("SPCtrl::anchor", GTK_TYPE_ANCHOR_TYPE, GTK_ARG_READWRITE, ARG_ANCHOR);

gtk_object_add_arg_type ("SPCtrl::size", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_SIZE);

gtk_object_add_arg_type ("SPCtrl::pixbuf", GTK_TYPE_POINTER, GTK_ARG_READWRITE, ARG_PIXBUF);

gtk_object_add_arg_type ("SPCtrl::filled", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_FILLED);

gtk_object_add_arg_type ("SPCtrl::fill_color", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_FILL_COLOR);

gtk_object_add_arg_type ("SPCtrl::stroked", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_STROKED);

gtk_object_add_arg_type ("SPCtrl::stroke_color", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_STROKE_COLOR);

object_class->destroy = sp_ctrl_destroy;

object_class->set_arg = sp_ctrl_set_arg;

item_class->update = sp_ctrl_update;

item_class->render = sp_ctrl_render;

item_class->point = sp_ctrl_point;

}

static void

sp_ctrl_init (SPCtrl *ctrl)

{

ctrl->shape = SP_CTRL_SHAPE_SQUARE;

ctrl->mode = SP_CTRL_MODE_COLOR;

ctrl->anchor = GTK_ANCHOR_CENTER;

ctrl->span = 3;

ctrl->defined = TRUE;

ctrl->shown = FALSE;

ctrl->build = FALSE;

ctrl->filled = 1;

ctrl->stroked = 0;

ctrl->fill_color = 0x000000ff;

ctrl->stroke_color = 0x000000ff;

ctrl->_moved = false;

ctrl->box.x0 = ctrl->box.y0 = ctrl->box.x1 = ctrl->box.y1 = 0;

ctrl->cache = NULL;

ctrl->pixbuf = NULL;

ctrl->_point = Geom::Point(0,0);

}

static void

sp_ctrl_destroy (GtkObject *object)

{

SPCtrl *ctrl;

g_return_if_fail (object != NULL);

g_return_if_fail (SP_IS_CTRL (object));

ctrl = SP_CTRL (object);

if (ctrl->cache) {

g_free(ctrl->cache);

ctrl->cache = NULL;

}

if (GTK_OBJECT_CLASS (parent_class)->destroy)

(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);

}

static void

sp_ctrl_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)

{

SPCanvasItem *item;

SPCtrl *ctrl;

GdkPixbuf * pixbuf = NULL;

item = SP_CANVAS_ITEM (object);

ctrl = SP_CTRL (object);

switch (arg_id) {

case ARG_SHAPE:

ctrl->shape = (SPCtrlShapeType)(GTK_VALUE_INT (*arg));

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

break;

case ARG_MODE:

ctrl->mode = (SPCtrlModeType)(GTK_VALUE_INT (*arg));

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

break;

case ARG_ANCHOR:

ctrl->anchor = (GtkAnchorType)(GTK_VALUE_INT (*arg));

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

break;

case ARG_SIZE:

ctrl->span = (gint) ((GTK_VALUE_DOUBLE (*arg) - 1.0) / 2.0 + 0.5);

ctrl->defined = (ctrl->span > 0);

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

break;

case ARG_FILLED:

ctrl->filled = GTK_VALUE_BOOL (*arg);

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

break;

case ARG_FILL_COLOR: {

// treat colors with zero alpha as opaque

guint32 fill = GTK_VALUE_INT (*arg);

fill = ((fill & 0xff) == 0 && fill) ? fill | 0xff : fill;

ctrl->fill_color = fill;

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

} break;

case ARG_STROKED:

ctrl->stroked = GTK_VALUE_BOOL (*arg);

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

break;

case ARG_STROKE_COLOR: {

// treat colors with zero alpha as opaque

guint32 stroke = GTK_VALUE_INT (*arg);

stroke = ((stroke & 0xff) == 0 && stroke) ? stroke | 0xff : stroke;

ctrl->stroke_color = stroke;

ctrl->build = FALSE;

sp_canvas_item_request_update (item);

} break;

case ARG_PIXBUF:

pixbuf = (GdkPixbuf*)(GTK_VALUE_POINTER (*arg));

if (gdk_pixbuf_get_has_alpha (pixbuf)) {

ctrl->pixbuf = pixbuf;

} else {

ctrl->pixbuf = gdk_pixbuf_add_alpha (pixbuf, FALSE, 0, 0, 0);

gdk_pixbuf_unref (pixbuf);

}

ctrl->build = FALSE;

break;

default:

break;

}

}

static void

sp_ctrl_update (SPCanvasItem *item, Geom::Matrix const &affine, unsigned int flags)

{

SPCtrl *ctrl;

gint x, y;

ctrl = SP_CTRL (item);

if (((SPCanvasItemClass *) parent_class)->update)

(* ((SPCanvasItemClass *) parent_class)->update) (item, affine, flags);

sp_canvas_item_reset_bounds (item);

if (!ctrl->_moved) return;

if (ctrl->shown) {

sp_canvas_request_redraw (item->canvas, ctrl->box.x0, ctrl->box.y0, ctrl->box.x1 + 1, ctrl->box.y1 + 1);

}

if (!ctrl->defined) return;

x = (gint) ((affine[4] > 0) ? (affine[4] + 0.5) : (affine[4] - 0.5)) - ctrl->span;

y = (gint) ((affine[5] > 0) ? (affine[5] + 0.5) : (affine[5] - 0.5)) - ctrl->span;

switch (ctrl->anchor) {

case GTK_ANCHOR_N:

case GTK_ANCHOR_CENTER:

case GTK_ANCHOR_S:

break;

case GTK_ANCHOR_NW:

case GTK_ANCHOR_W:

case GTK_ANCHOR_SW:

x += ctrl->span;

break;

case GTK_ANCHOR_NE:

case GTK_ANCHOR_E:

case GTK_ANCHOR_SE:

x -= (ctrl->span + 1);

break;

}

switch (ctrl->anchor) {

case GTK_ANCHOR_W:

case GTK_ANCHOR_CENTER:

case GTK_ANCHOR_E:

break;

case GTK_ANCHOR_NW:

case GTK_ANCHOR_N:

case GTK_ANCHOR_NE:

y += ctrl->span;

break;

case GTK_ANCHOR_SW:

case GTK_ANCHOR_S:

case GTK_ANCHOR_SE:

y -= (ctrl->span + 1);

break;

}

ctrl->box.x0 = x;

ctrl->box.y0 = y;

ctrl->box.x1 = ctrl->box.x0 + 2 * ctrl->span;

ctrl->box.y1 = ctrl->box.y0 + 2 * ctrl->span;

sp_canvas_update_bbox (item, ctrl->box.x0, ctrl->box.y0, ctrl->box.x1 + 1, ctrl->box.y1 + 1);

}

static double

sp_ctrl_point (SPCanvasItem *item, Geom::Point p, SPCanvasItem **actual_item)

{

SPCtrl *ctrl = SP_CTRL (item);

*actual_item = item;

double const x = p[Geom::X];

double const y = p[Geom::Y];

if ((x >= ctrl->box.x0) && (x <= ctrl->box.x1) && (y >= ctrl->box.y0) && (y <= ctrl->box.y1)) return 0.0;

return 1e18;

}

static void

sp_ctrl_build_cache (SPCtrl *ctrl)

{

//guchar * p, *q;

//int size, x, y, z, s, a, side, c;

//guint8 fr, fg, fb, fa, sr, sg, sb, sa;

/*if (ctrl->filled) {

int w, h; // for clarity; w and h are always odd

w = h = (ctrl->span * 2 +1);

int c = ctrl->span ;

if (ctrl->cache) {

cairo_surface_finish(ctrl->cache);

cairo_surface_destroy(ctrl->cache);

}

ctrl->cache = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);

cairo_t *cr = cairo_create(ctrl->cache);

bool supress_fill = false;

bool supress_paint = false;

switch (ctrl->shape) {

case SP_CTRL_SHAPE_SQUARE:

cairo_rectangle(cr, 0, 0, w, h);

ctrl->build = TRUE;

break;

case SP_CTRL_SHAPE_DIAMOND:

cairo_move_to(cr, c, 0); // c stands for "center" - it is half of the width / height

cairo_line_to(cr, w, c);

cairo_line_to(cr, c, h);

cairo_line_to(cr, 0, c);

cairo_close_path(cr);

ctrl->build = TRUE;

break;

case SP_CTRL_SHAPE_CIRCLE:

cairo_arc(cr, 0.5+c, 0.5+c, c, 0, 2*M_PI);

cairo_close_path(cr);

ctrl->build = TRUE;

break;

case SP_CTRL_SHAPE_CROSS:

cairo_move_to(cr, 0.5+c, 0); // top stroke

cairo_line_to(cr, 0.5+c, c);

cairo_move_to(cr, w, 0.5+c); // right stroke

cairo_line_to(cr, w, c+1);

cairo_move_to(cr, 0.5+c, h); // bottom stroke

cairo_line_to(cr, 0.5+c, c+1);

cairo_move_to(cr, 0, 0.5+c); // left stroke

cairo_line_to(cr, c, 0.5+c);

supress_fill = true;

ctrl->build = TRUE;

break;

case SP_CTRL_SHAPE_BITMAP:

if (ctrl->pixbuf) {

gdk_cairo_set_source_pixbuf(cr, ctrl->pixbuf, 0, 0);

cairo_paint(cr);

cairo_surface_flush(ctrl->cache);

// TODO lame!!! find a way to do this without direct pixel manipulation.

int stride = cairo_image_surface_get_stride(ctrl->cache);

guint32 *px = reinterpret_cast<guint32*>(cairo_image_surface_get_data(ctrl->cache));

// fix byte order. fill_color is 0xrrggbbaa, cairo needs 0xaarrggbb.

// both quantities are native-endian, so it should be portable.

guint32 fill = ctrl->fill_color;

guint32 stroke = ctrl->stroke_color;

fill = ((fill & 0xff) << 24) | ((fill & 0xffffff00) >> 8);

stroke = ((stroke & 0xff) << 24) | ((stroke & 0xffffff00) >> 8);

for (int i = 0; i < h; ++i) {

for (int j = 0; j < w; ++j) {

int index = i * stride / 4 + j;

if (px[index] & 0xff000000) {

px[index] = px[index] ? stroke : fill;

} else {

px[index] = 0;

}

}

}

cairo_surface_mark_dirty(ctrl->cache);

supress_paint = true;

} else {

g_print ("control has no pixmap\n");

}

ctrl->build = TRUE;

break;

case SP_CTRL_SHAPE_IMAGE:

if (ctrl->pixbuf) {

gdk_cairo_set_source_pixbuf(cr, ctrl->pixbuf, 0, 0);

cairo_paint(cr);

supress_paint = true;

} else {

g_print ("control has no pixmap\n");

}

ctrl->build = TRUE;

break;

default:

break;

}

if (ctrl->build && !supress_paint) {

if (ctrl->filled && !supress_fill) {

ink_cairo_set_source_rgba32(cr, ctrl->fill_color);

cairo_fill_preserve(cr);

}

if (ctrl->stroked) {

ink_cairo_set_source_rgba32(cr, ctrl->stroke_color);

cairo_set_line_width(cr, 2);

cairo_clip_preserve(cr);

cairo_stroke(cr);

}

}

cairo_destroy(cr);

}

#define COMPOSE_X(b,f,a) ( FAST_DIVIDE<255>( ((guchar) b) * ((guchar) (0xff - a)) + ((guchar) ((b ^ ~f) + b/4 - (b>127? 63 : 0))) * ((guchar) a) ) )

#define COMPOSE_N(b,f,a) ( FAST_DIVIDE<255>( ((guchar) b) * ((guchar) (0xff - a)) + ((guchar) f) * ((guchar) a) ) )

static void

sp_ctrl_render (SPCanvasItem *item, SPCanvasBuf *buf)

{

//gint y0, y1, y, x0,x1,x;

//guchar *p, *q, a;

SPCtrl *ctrl = SP_CTRL (item);

if (!ctrl->defined) return;

if ((!ctrl->filled) && (!ctrl->stroked)) return;

// the control-image is rendered into ctrl->cache

if (!ctrl->build) {

sp_ctrl_build_cache (ctrl);

}

cairo_set_source_surface(buf->ct, ctrl->cache,

ctrl->box.x0 - buf->rect.x0, ctrl->box.y0 - buf->rect.y0);

cairo_paint(buf->ct);

/*

#if 0

// then we render from ctrl->cache

y0 = MAX (ctrl->box.y0, buf->rect.y0);

y1 = MIN (ctrl->box.y1, buf->rect.y1 - 1);

x0 = MAX (ctrl->box.x0, buf->rect.x0);

x1 = MIN (ctrl->box.x1, buf->rect.x1 - 1);

for (y = y0; y <= y1; y++) {

p = buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + (x0 - buf->rect.x0) * 4;

q = ctrl->cache + ((y - ctrl->box.y0) * (ctrl->span*2+1) + (x0 - ctrl->box.x0)) * 4;

for (x = x0; x <= x1; x++) {

a = *(q + 3);

// 00000000 is the only way to get invisible; all other colors with alpha 00 are treated as mode_color with alpha ff

colormode = false;

if (a == 0x00 && !(q[0] == 0x00 && q[1] == 0x00 && q[2] == 0x00)) {

a = 0xff;

colormode = true;

}

if (ctrl->mode == SP_CTRL_MODE_COLOR || colormode) {

p[0] = COMPOSE_N (p[0], q[0], a);

p[1] = COMPOSE_N (p[1], q[1], a);

p[2] = COMPOSE_N (p[2], q[2], a);

q += 4;

p += 4;

} else if (ctrl->mode == SP_CTRL_MODE_XOR) {

p[0] = COMPOSE_X (p[0], q[0], a);

p[1] = COMPOSE_X (p[1], q[1], a);

p[2] = COMPOSE_X (p[2], q[2], a);

q += 4;

p += 4;

}

}

}

#endif

ctrl->shown = TRUE;

}

void SPCtrl::moveto (Geom::Point const p) {

if (p != _point) {

sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (this), Geom::Matrix(Geom::Translate (p)));

_moved = true;

}

_point = p;

}