/*
* Simple non-transformed rectangle, usable for rubberband
*
* Author:
* Lauris Kaplinski <lauris@ximian.com>
* bulia byak <buliabyak@users.sf.net>
* Carl Hetherington <inkscape@carlh.net>
* Jon A. Cruz <jon@joncruz.org>
*
* Copyright (C) 1999-2001 Lauris Kaplinski
* Copyright (C) 2000-2001 Ximian, Inc.
*
* Released under GNU GPL
*
*/
#include "sodipodi-ctrlrect.h"
#include "sp-canvas-util.h"
#include "display/cairo-utils.h"
#include "display/sp-canvas.h"
/*
* Currently we do not have point method, as it should always be painted
* during some transformation, which takes care of events...
*
* Corner coords can be in any order - i.e. x1 < x0 is allowed
*/
static void sp_ctrlrect_destroy(SPCanvasItem *object);
static void sp_ctrlrect_update(SPCanvasItem *item, Geom::Affine const &affine, unsigned int flags);
static void sp_ctrlrect_render(SPCanvasItem *item, SPCanvasBuf *buf);
static const guint DASH_LENGTH = 4;
G_DEFINE_TYPE(CtrlRect, sp_ctrlrect, SP_TYPE_CANVAS_ITEM);
static void sp_ctrlrect_class_init(CtrlRectClass *c)
{
SPCanvasItemClass *item_class = SP_CANVAS_ITEM_CLASS(c);
item_class->destroy = sp_ctrlrect_destroy;
item_class->update = sp_ctrlrect_update;
item_class->render = sp_ctrlrect_render;
}
static void sp_ctrlrect_init(CtrlRect *cr)
{
cr->init();
}
static void sp_ctrlrect_destroy(SPCanvasItem *object)
{
if (SP_CANVAS_ITEM_CLASS(sp_ctrlrect_parent_class)->destroy) {
(* SP_CANVAS_ITEM_CLASS(sp_ctrlrect_parent_class)->destroy)(object);
}
}
static void sp_ctrlrect_render(SPCanvasItem *item, SPCanvasBuf *buf)
{
SP_CTRLRECT(item)->render(buf);
}
static void sp_ctrlrect_update(SPCanvasItem *item, Geom::Affine const &affine, unsigned int flags)
{
SP_CTRLRECT(item)->update(affine, flags);
}
void CtrlRect::init()
{
_has_fill = false;
_dashed = false;
_checkerboard = false;
_shadow = 0;
_area = Geom::OptIntRect();
_rect = Geom::Rect(Geom::Point(0,0),Geom::Point(0,0));
_shadow_size = 0;
_border_color = 0x000000ff;
_fill_color = 0xffffffff;
_shadow_color = 0x000000ff;
}
void CtrlRect::render(SPCanvasBuf *buf)
{
using Geom::X;
using Geom::Y;
if (!_area) {
return;
}
Geom::IntRect area = *_area;
Geom::IntRect area_w_shadow (area[X].min(), area[Y].min(),
area[X].max() + _shadow_size, area[Y].max() + _shadow_size);
if ( area_w_shadow.intersects(buf->rect) )
{
static double const dashes[2] = {4.0, 4.0};
cairo_save(buf->ct);
cairo_translate(buf->ct, -buf->rect.left(), -buf->rect.top());
cairo_set_line_width(buf->ct, 1);
if (_dashed) cairo_set_dash(buf->ct, dashes, 2, 0);
cairo_rectangle(buf->ct, 0.5 + area[X].min(), 0.5 + area[Y].min(),
area[X].max() - area[X].min(), area[Y].max() - area[Y].min());
if (_checkerboard) {
cairo_pattern_t *cb = ink_cairo_pattern_create_checkerboard();
cairo_set_source(buf->ct, cb);
cairo_pattern_destroy(cb);
cairo_fill_preserve(buf->ct);
}
if (_has_fill) {
ink_cairo_set_source_rgba32(buf->ct, _fill_color);
cairo_fill_preserve(buf->ct);
}
ink_cairo_set_source_rgba32(buf->ct, _border_color);
cairo_stroke(buf->ct);
if (_shadow_size == 1) { // highlight the border by drawing it in _shadow_color
if (_dashed) {
cairo_set_dash(buf->ct, dashes, 2, 4);
cairo_rectangle(buf->ct, 0.5 + area[X].min(), 0.5 + area[Y].min(),
area[X].max() - area[X].min(), area[Y].max() - area[Y].min());
} else {
cairo_rectangle(buf->ct, -0.5 + area[X].min(), -0.5 + area[Y].min(),
area[X].max() - area[X].min(), area[Y].max() - area[Y].min());
}
ink_cairo_set_source_rgba32(buf->ct, _shadow_color);
cairo_stroke(buf->ct);
} else if (_shadow_size > 1) { // fill the shadow
ink_cairo_set_source_rgba32(buf->ct, _shadow_color);
cairo_rectangle(buf->ct, 1 + area[X].max(), area[Y].min() + _shadow_size,
_shadow_size, area[Y].max() - area[Y].min() + 1); // right shadow
cairo_rectangle(buf->ct, area[X].min() + _shadow_size, 1 + area[Y].max(),
area[X].max() - area[X].min() - _shadow_size + 1, _shadow_size);
cairo_fill(buf->ct);
}
cairo_restore(buf->ct);
}
}
void CtrlRect::update(Geom::Affine const &affine, unsigned int flags)
{
using Geom::X;
using Geom::Y;
if ((SP_CANVAS_ITEM_CLASS(sp_ctrlrect_parent_class))->update) {
(SP_CANVAS_ITEM_CLASS(sp_ctrlrect_parent_class))->update(this, affine, flags);
}
sp_canvas_item_reset_bounds(this);
Geom::Rect bbox(_rect.min() * affine, _rect.max() * affine);
Geom::OptIntRect _area_old = _area;
Geom::IntRect area ( (int) floor(bbox.min()[Geom::X] + 0.5),
(int) floor(bbox.min()[Geom::Y] + 0.5),
(int) floor(bbox.max()[Geom::X] + 0.5),
(int) floor(bbox.max()[Geom::Y] + 0.5) );
_area = area;
Geom::IntRect area_old(0,0,0,0);
if (_area_old) { // this weird construction is because the code below assumes _area_old to be 'valid'
area_old = *_area_old;
}
gint _shadow_size_old = _shadow_size;
_shadow_size = _shadow;
// FIXME: we don't process a possible change in _has_fill
if (_has_fill) {
if (_area_old) {
canvas->requestRedraw(area_old[X].min() - 1, area_old[Y].min() - 1,
area_old[X].max() + _shadow_size + 1, area_old[Y].max() + _shadow_size + 1);
}
if (_area) {
canvas->requestRedraw(area[X].min() - 1, area[Y].min() - 1,
area[X].max() + _shadow_size + 1, area[Y].max() + _shadow_size + 1);
}
} else { // clear box, be smart about what part of the frame to redraw
/* Top */
if (area[Y].min() != area_old[Y].min()) { // different level, redraw fully old and new
if (area_old[X].min() != area_old[X].max())
canvas->requestRedraw(area_old[X].min() - 1, area_old[Y].min() - 1,
area_old[X].max() + 1, area_old[Y].min() + 1);
if (area[X].min() != area[X].max())
canvas->requestRedraw(area[X].min() - 1, area[Y].min() - 1,
area[X].max() + 1, area[Y].min() + 1);
} else { // same level, redraw only the ends
if (area[X].min() != area_old[X].min()) {
canvas->requestRedraw(MIN(area_old[X].min(),area[X].min()) - 1, area[Y].min() - 1,
MAX(area_old[X].min(),area[X].min()) + 1, area[Y].min() + 1);
}
if (area[X].max() != area_old[X].max()) {
canvas->requestRedraw(MIN(area_old[X].max(),area[X].max()) - 1, area[Y].min() - 1,
MAX(area_old[X].max(),area[X].max()) + 1, area[Y].min() + 1);
}
}
/* Left */
if (area[X].min() != area_old[X].min()) { // different level, redraw fully old and new
if (area_old[Y].min() != area_old[Y].max())
canvas->requestRedraw(area_old[X].min() - 1, area_old[Y].min() - 1,
area_old[X].min() + 1, area_old[Y].max() + 1);
if (area[Y].min() != area[Y].max())
canvas->requestRedraw(area[X].min() - 1, area[Y].min() - 1,
area[X].min() + 1, area[Y].max() + 1);
} else { // same level, redraw only the ends
if (area[Y].min() != area_old[Y].min()) {
canvas->requestRedraw(area[X].min() - 1, MIN(area_old[Y].min(),area[Y].min()) - 1,
area[X].min() + 1, MAX(area_old[Y].min(),area[Y].min()) + 1);
}
if (area[Y].max() != area_old[Y].max()) {
canvas->requestRedraw(area[X].min() - 1, MIN(area_old[Y].max(),area[Y].max()) - 1,
area[X].min() + 1, MAX(area_old[Y].max(),area[Y].max()) + 1);
}
}
/* Right */
if (area[X].max() != area_old[X].max() || _shadow_size_old != _shadow_size) {
if (area_old[Y].min() != area_old[Y].max())
canvas->requestRedraw(area_old[X].max() - 1, area_old[Y].min() - 1,
area_old[X].max() + _shadow_size + 1, area_old[Y].max() + _shadow_size + 1);
if (area[Y].min() != area[Y].max())
canvas->requestRedraw(area[X].max() - 1, area[Y].min() - 1,
area[X].max() + _shadow_size + 1, area[Y].max() + _shadow_size + 1);
} else { // same level, redraw only the ends
if (area[Y].min() != area_old[Y].min()) {
canvas->requestRedraw(area[X].max() - 1, MIN(area_old[Y].min(),area[Y].min()) - 1,
area[X].max() + _shadow_size + 1, MAX(area_old[Y].min(),area[Y].min()) + _shadow_size + 1);
}
if (area[Y].max() != area_old[Y].max()) {
canvas->requestRedraw(area[X].max() - 1, MIN(area_old[Y].max(),area[Y].max()) - 1,
area[X].max() + _shadow_size + 1, MAX(area_old[Y].max(),area[Y].max()) + _shadow_size + 1);
}
}
/* Bottom */
if (area[Y].max() != area_old[Y].max() || _shadow_size_old != _shadow_size) {
if (area_old[X].min() != area_old[X].max())
canvas->requestRedraw(area_old[X].min() - 1, area_old[Y].max() - 1,
area_old[X].max() + _shadow_size + 1, area_old[Y].max() + _shadow_size + 1);
if (area[X].min() != area[X].max())
canvas->requestRedraw(area[X].min() - 1, area[Y].max() - 1,
area[X].max() + _shadow_size + 1, area[Y].max() + _shadow_size + 1);
} else { // same level, redraw only the ends
if (area[X].min() != area_old[X].min()) {
canvas->requestRedraw(MIN(area_old[X].min(),area[X].min()) - 1, area[Y].max() - 1,
MAX(area_old[X].min(),area[X].min()) + _shadow_size + 1, area[Y].max() + _shadow_size + 1);
}
if (area[X].max() != area_old[X].max()) {
canvas->requestRedraw(MIN(area_old[X].max(),area[X].max()) - 1, area[Y].max() - 1,
MAX(area_old[X].max(),area[X].max()) + _shadow_size + 1, area[Y].max() + _shadow_size + 1);
}
}
}
// update SPCanvasItem box
if (_area) {
x1 = area[X].min() - 1;
y1 = area[Y].min() - 1;
x2 = area[X].max() + _shadow_size + 1;
y2 = area[Y].max() + _shadow_size + 1;
}
}
void CtrlRect::setColor(guint32 b, bool h, guint f)
{
_border_color = b;
_has_fill = h;
_fill_color = f;
_requestUpdate();
}
void CtrlRect::setShadow(int s, guint c)
{
_shadow = s;
_shadow_color = c;
_requestUpdate();
}
void CtrlRect::setRectangle(Geom::Rect const &r)
{
_rect = r;
_requestUpdate();
}
void CtrlRect::setDashed(bool d)
{
_dashed = d;
_requestUpdate();
}
void CtrlRect::setCheckerboard(bool d)
{
_checkerboard = d;
_requestUpdate();
}
void CtrlRect::_requestUpdate()
{
sp_canvas_item_request_update(SP_CANVAS_ITEM(this));
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :