static void sp_tspan_bbox(SPItem const *item, NRRect *bbox, Geom::Matrix const &transform, unsigned const /*flags*/)
{
// find out the ancestor text which holds our layout
SPObject *parent_text = SP_OBJECT(item);
for (; parent_text != NULL && !SP_IS_TEXT(parent_text); parent_text = SP_OBJECT_PARENT (parent_text)){};
if (parent_text == NULL) return;
// get the bbox of our portion of the layout
SP_TEXT(parent_text)->layout.getBoundingBox(bbox, transform, sp_text_get_length_upto(parent_text, item), sp_text_get_length_upto(item, NULL) - 1);
// Add stroke width
SPStyle* style=SP_OBJECT_STYLE (item);
if (!style->stroke.isNone()) {
double const scale = transform.descrim();
if ( fabs(style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
double const width = MAX(0.125, style->stroke_width.computed * scale);
if ( fabs(bbox->x1 - bbox->x0) > -0.00001 && fabs(bbox->y1 - bbox->y0) > -0.00001 ) {
bbox->x0-=0.5*width;
bbox->x1+=0.5*width;
bbox->y0-=0.5*width;
bbox->y1+=0.5*width;
}
}
}
}
static Geom::Matrix
sp_line_set_transform (SPItem *item, Geom::Matrix const &xform)
{
SPLine *line = SP_LINE (item);
Geom::Point points[2];
points[0] = Geom::Point(line->x1.computed, line->y1.computed);
points[1] = Geom::Point(line->x2.computed, line->y2.computed);
points[0] *= xform;
points[1] *= xform;
line->x1.computed = points[0][Geom::X];
line->y1.computed = points[0][Geom::Y];
line->x2.computed = points[1][Geom::X];
line->y2.computed = points[1][Geom::Y];
sp_item_adjust_stroke(item, xform.descrim());
SP_OBJECT (item)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
return Geom::identity();
}
void transform_bicubic(NRPixBlock *to, NRPixBlock *from, Geom::Matrix const &trans)
{
if (NR_PIXBLOCK_BPP(from) != 4 || NR_PIXBLOCK_BPP(to) != 4) {
g_warning("A non-32-bpp image passed to transform_bicubic: scaling aborted.");
return;
}
bool free_from_on_exit = false;
if (from->mode != to->mode){
NRPixBlock *o_from = from;
from = new NRPixBlock;
nr_pixblock_setup_fast(from, to->mode, o_from->area.x0, o_from->area.y0, o_from->area.x1, o_from->area.y1, false);
nr_blit_pixblock_pixblock(from, o_from);
free_from_on_exit = true;
}
if (from->mode != NR_PIXBLOCK_MODE_R8G8B8A8P) {
// TODO: Fix this... (The problem is that for interpolation non-premultiplied colors should be premultiplied...)
g_warning("transform_bicubic does not properly support non-premultiplied images");
}
// Precalculate sizes of source and destination pixblocks
int from_width = from->area.x1 - from->area.x0;
int from_height = from->area.y1 - from->area.y0;
int to_width = to->area.x1 - to->area.x0;
int to_height = to->area.y1 - to->area.y0;
Geom::Matrix itrans = trans.inverse();
// Loop through every pixel of destination image, a line at a time
for (int to_y = 0 ; to_y < to_height ; to_y++) {
for (int to_x = 0 ; to_x < to_width ; to_x++) {
double from_x = itrans[0] * (to_x + 0.5 + to->area.x0)
+ itrans[2] * (to_y + 0.5 + to->area.y0)
+ itrans[4] - from->area.x0;
double from_y = itrans[1] * (to_x + 0.5 + to->area.x0)
+ itrans[3] * (to_y + 0.5 + to->area.y0)
+ itrans[5] - from->area.y0;
if (from_x < 0 || from_x >= from_width ||
from_y < 0 || from_y >= from_height) {
continue;
}
RGBA line[4];
int from_line[4];
for (int i = 0 ; i < 4 ; i++) {
int fy_line = (int)round(from_y) + i - 2;
if (fy_line >= 0) {
if (fy_line < from_height) {
from_line[i] = fy_line * from->rs;
} else {
from_line[i] = (from_height - 1) * from->rs;
}
} else {
from_line[i] = 0;
}
}
for (int i = 0 ; i < 4 ; i++) {
int k = (int)round(from_x) + i - 2;
if (k < 0) k = 0;
if (k >= from_width) k = from_width - 1;
k *= 4;
_check_index(from, from_line[0] + k, __LINE__);
_check_index(from, from_line[1] + k, __LINE__);
_check_index(from, from_line[2] + k, __LINE__);
_check_index(from, from_line[3] + k, __LINE__);
line[i].r = sample(NR_PIXBLOCK_PX(from)[from_line[0] + k],
NR_PIXBLOCK_PX(from)[from_line[1] + k],
NR_PIXBLOCK_PX(from)[from_line[2] + k],
NR_PIXBLOCK_PX(from)[from_line[3] + k],
from_y);
line[i].g = sample(NR_PIXBLOCK_PX(from)[from_line[0] + k + 1],
NR_PIXBLOCK_PX(from)[from_line[1] + k + 1],
NR_PIXBLOCK_PX(from)[from_line[2] + k + 1],
NR_PIXBLOCK_PX(from)[from_line[3] + k + 1],
from_y);
line[i].b = sample(NR_PIXBLOCK_PX(from)[from_line[0] + k + 2],
NR_PIXBLOCK_PX(from)[from_line[1] + k + 2],
NR_PIXBLOCK_PX(from)[from_line[2] + k + 2],
NR_PIXBLOCK_PX(from)[from_line[3] + k + 2],
from_y);
line[i].a = sample(NR_PIXBLOCK_PX(from)[from_line[0] + k + 3],
NR_PIXBLOCK_PX(from)[from_line[1] + k + 3],
NR_PIXBLOCK_PX(from)[from_line[2] + k + 3],
NR_PIXBLOCK_PX(from)[from_line[3] + k + 3],
from_y);
}
RGBA result;
result.r = round(sample(line[0].r, line[1].r, line[2].r, line[3].r,
from_x));
result.g = round(sample(line[0].g, line[1].g, line[2].g, line[3].g,
from_x));
result.b = round(sample(line[0].b, line[1].b, line[2].b, line[3].b,
from_x));
result.a = round(sample(line[0].a, line[1].a, line[2].a, line[3].a,
from_x));
using Inkscape::Filters::clamp;
using Inkscape::Filters::clamp_alpha;
_check_index(to, to_y * to->rs + to_x * 4, __LINE__);
if (to->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
/* Make sure, none of the RGB channels exceeds 100% intensity
* in premultiplied output */
int const alpha = clamp((int)result.a);
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4] =
clamp_alpha((int)result.r, alpha);
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4 + 1] =
clamp_alpha((int)result.g, alpha);
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4 + 2] =
clamp_alpha((int)result.b, alpha);
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4 + 3] = alpha;
} else {
/* Clamp the output to unsigned char range */
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4]
= clamp((int)result.r);
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4 + 1]
= clamp((int)result.g);
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4 + 2]
= clamp((int)result.b);
NR_PIXBLOCK_PX(to)[to_y * to->rs + to_x * 4 + 3]
= clamp((int)result.a);
}
}
}
if (free_from_on_exit) {
nr_pixblock_release(from);
delete from;
}
}
static gint sp_dropper_context_root_handler(SPEventContext *event_context, GdkEvent *event)
{
SPDropperContext *dc = (SPDropperContext *) event_context;
int ret = FALSE;
SPDesktop *desktop = event_context->desktop;
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
int pick = prefs->getInt("/tools/dropper/pick", SP_DROPPER_PICK_VISIBLE);
bool setalpha = prefs->getBool("/tools/dropper/setalpha", true);
switch (event->type) {
case GDK_BUTTON_PRESS:
if (event->button.button == 1 && !event_context->space_panning) {
dc->centre = Geom::Point(event->button.x, event->button.y);
dc->dragging = TRUE;
ret = TRUE;
}
break;
case GDK_MOTION_NOTIFY:
if (event->motion.state & GDK_BUTTON2_MASK) {
// pass on middle-drag
ret = FALSE;
break;
} else if (!event_context->space_panning) {
// otherwise, constantly calculate color no matter is any button pressed or not
double rw = 0.0;
double W(0), R(0), G(0), B(0), A(0);
if (dc->dragging) {
// calculate average
// radius
rw = std::min(Geom::L2(Geom::Point(event->button.x, event->button.y) - dc->centre), 400.0);
if (rw == 0) { // happens sometimes, little idea why...
break;
}
Geom::Point const cd = desktop->w2d(dc->centre);
Geom::Matrix const w2dt = desktop->w2d();
const double scale = rw * w2dt.descrim();
Geom::Matrix const sm( Geom::Scale(scale, scale) * Geom::Translate(cd) );
sp_canvas_item_affine_absolute(dc->area, sm);
sp_canvas_item_show(dc->area);
/* Get buffer */
const int x0 = (int) floor(dc->centre[Geom::X] - rw);
const int y0 = (int) floor(dc->centre[Geom::Y] - rw);
const int x1 = (int) ceil(dc->centre[Geom::X] + rw);
const int y1 = (int) ceil(dc->centre[Geom::Y] + rw);
if ((x1 > x0) && (y1 > y0)) {
NRPixBlock pb;
nr_pixblock_setup_fast(&pb, NR_PIXBLOCK_MODE_R8G8B8A8P, x0, y0, x1, y1, TRUE);
/* fixme: (Lauris) */
sp_canvas_arena_render_pixblock(SP_CANVAS_ARENA(sp_desktop_drawing(desktop)), &pb);
for (int y = y0; y < y1; y++) {
const unsigned char *s = NR_PIXBLOCK_PX(&pb) + (y - y0) * pb.rs;
for (int x = x0; x < x1; x++) {
const double dx = x - dc->centre[Geom::X];
const double dy = y - dc->centre[Geom::Y];
const double w = exp(-((dx * dx) + (dy * dy)) / (rw * rw));
W += w;
R += w * s[0];
G += w * s[1];
B += w * s[2];
A += w * s[3];
s += 4;
}
}
nr_pixblock_release(&pb);
R = (R + 0.001) / (255.0 * W);
G = (G + 0.001) / (255.0 * W);
B = (B + 0.001) / (255.0 * W);
A = (A + 0.001) / (255.0 * W);
R = CLAMP(R, 0.0, 1.0);
G = CLAMP(G, 0.0, 1.0);
B = CLAMP(B, 0.0, 1.0);
A = CLAMP(A, 0.0, 1.0);
}
} else {
// pick single pixel
NRPixBlock pb;
int x = (int) floor(event->button.x);
int y = (int) floor(event->button.y);
nr_pixblock_setup_fast(&pb, NR_PIXBLOCK_MODE_R8G8B8A8P, x, y, x+1, y+1, TRUE);
sp_canvas_arena_render_pixblock(SP_CANVAS_ARENA(sp_desktop_drawing(desktop)), &pb);
const unsigned char *s = NR_PIXBLOCK_PX(&pb);
R = s[0] / 255.0;
G = s[1] / 255.0;
B = s[2] / 255.0;
A = s[3] / 255.0;
}
if (pick == SP_DROPPER_PICK_VISIBLE) {
// compose with page color
guint32 bg = sp_desktop_namedview(desktop)->pagecolor;
R = R + (SP_RGBA32_R_F(bg)) * (1 - A);
G = G + (SP_RGBA32_G_F(bg)) * (1 - A);
B = B + (SP_RGBA32_B_F(bg)) * (1 - A);
A = 1.0;
} else {
// un-premultiply color channels
if (A > 0) {
R /= A;
G /= A;
B /= A;
}
}
if (fabs(A) < 1e-4) {
A = 0; // suppress exponentials, CSS does not allow that
}
// remember color
dc->R = R;
dc->G = G;
dc->B = B;
dc->alpha = A;
// status message
double alpha_to_set = setalpha? dc->alpha : 1.0;
guint32 c32 = SP_RGBA32_F_COMPOSE(R, G, B, alpha_to_set);
gchar c[64];
sp_svg_write_color(c, sizeof(c), c32);
// alpha of color under cursor, to show in the statusbar
// locale-sensitive printf is OK, since this goes to the UI, not into SVG
gchar *alpha = g_strdup_printf(_(" alpha %.3g"), alpha_to_set);
// where the color is picked, to show in the statusbar
gchar *where = dc->dragging ? g_strdup_printf(_(", averaged with radius %d"), (int) rw) : g_strdup_printf(_(" under cursor"));
// message, to show in the statusbar
const gchar *message = dc->dragging ? _("<b>Release mouse</b> to set color.") : _("<b>Click</b> to set fill, <b>Shift+click</b> to set stroke; <b>drag</b> to average color in area; with <b>Alt</b> to pick inverse color; <b>Ctrl+C</b> to copy the color under mouse to clipboard");
event_context->defaultMessageContext()->setF(
Inkscape::NORMAL_MESSAGE,
"<b>%s%s</b>%s. %s", c,
(pick == SP_DROPPER_PICK_VISIBLE)? "" : alpha,
where, message
);
g_free(where);
g_free(alpha);
ret = TRUE;
}
break;
case GDK_BUTTON_RELEASE:
if (event->button.button == 1 && !event_context->space_panning)
{
sp_canvas_item_hide(dc->area);
dc->dragging = FALSE;
double alpha_to_set = setalpha? dc->alpha : 1.0;
// do the actual color setting
sp_desktop_set_color(desktop,
(event->button.state & GDK_MOD1_MASK)?
ColorRGBA(1 - dc->R, 1 - dc->G, 1 - dc->B, alpha_to_set) : ColorRGBA(dc->R, dc->G, dc->B, alpha_to_set),
false, !(event->button.state & GDK_SHIFT_MASK));
// REJON: set aux. toolbar input to hex color!
if (!(sp_desktop_selection(desktop)->isEmpty())) {
sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_DROPPER,
_("Set picked color"));
}
ret = TRUE;
}
break;
case GDK_KEY_PRESS:
switch (get_group0_keyval(&event->key)) {
case GDK_Up:
case GDK_Down:
case GDK_KP_Up:
case GDK_KP_Down:
// prevent the zoom field from activation
if (!MOD__CTRL_ONLY) {
ret = TRUE;
}
break;
case GDK_Escape:
sp_desktop_selection(desktop)->clear();
default:
break;
}
break;
default:
break;
}
if (!ret) {
if (((SPEventContextClass *) parent_class)->root_handler) {
ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);
}
}
return ret;
}
void
VectorParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
{
set_and_write_new_values( origin * postmul, vector * postmul.without_translation() );
}
