#define __NR_ARENA_GLYPHS_C__

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include "libnr/nr-blit.h"

#include "libnr/nr-convert2geom.h"

#include <2geom/matrix.h>

#include "style.h"

#include "display/nr-arena.h"

#include "display/nr-arena-glyphs.h"

#include <cairo.h>

#include "display/cairo-utils.h"

#include "helper/geom.h"

#ifdef test_glyph_liv

#include "../display/canvas-bpath.h"

#include "libnrtype/font-instance.h"

void nr_pixblock_render_shape_mask_or(NRPixBlock &m, Shape *theS);

#endif

#ifdef ENABLE_SVG_FONTS

#include "nr-svgfonts.h"

#endif //#ifdef ENABLE_SVG_FONTS

static void nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass);

static void nr_arena_glyphs_init(NRArenaGlyphs *glyphs);

static void nr_arena_glyphs_finalize(NRObject *object);

static guint nr_arena_glyphs_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);

static guint nr_arena_glyphs_clip(cairo_t *ct, NRArenaItem *item, NRRectL *area);

static NRArenaItem *nr_arena_glyphs_pick(NRArenaItem *item, Geom::Point p, double delta, unsigned int sticky);

static NRArenaItemClass *glyphs_parent_class;

nr_arena_glyphs_get_type(void)

{

static NRType type = 0;

if (!type) {

type = nr_object_register_type(NR_TYPE_ARENA_ITEM,

"NRArenaGlyphs",

sizeof(NRArenaGlyphsClass),

sizeof(NRArenaGlyphs),

(void (*)(NRObjectClass *)) nr_arena_glyphs_class_init,

(void (*)(NRObject *)) nr_arena_glyphs_init);

}

return type;

}

static void

nr_arena_glyphs_class_init(NRArenaGlyphsClass *klass)

{

NRObjectClass *object_class;

NRArenaItemClass *item_class;

object_class = (NRObjectClass *) klass;

item_class = (NRArenaItemClass *) klass;

glyphs_parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent;

object_class->finalize = nr_arena_glyphs_finalize;

object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphs>;

item_class->update = nr_arena_glyphs_update;

item_class->clip = nr_arena_glyphs_clip;

item_class->pick = nr_arena_glyphs_pick;

}

static void

nr_arena_glyphs_init(NRArenaGlyphs *glyphs)

{

glyphs->g_transform.setIdentity();

glyphs->font = NULL;

glyphs->glyph = 0;

glyphs->x = glyphs->y = 0.0;

}

static void

nr_arena_glyphs_finalize(NRObject *object)

{

NRArenaGlyphs *glyphs = static_cast<NRArenaGlyphs *>(object);

if (glyphs->font) {

glyphs->font->Unref();

glyphs->font=NULL;

}

((NRObjectClass *) glyphs_parent_class)->finalize(object);

}

static guint

nr_arena_glyphs_update(NRArenaItem *item, NRRectL */*area*/, NRGC *gc, guint /*state*/, guint /*reset*/)

{

NRArenaGlyphs *glyphs = NR_ARENA_GLYPHS(item);

NRArenaGlyphsGroup *ggroup = NR_ARENA_GLYPHS_GROUP(item->parent);

if (!glyphs->font || !ggroup->style)

return NR_ARENA_ITEM_STATE_ALL;

if (ggroup->nrstyle.fill.type == NRStyle::PAINT_NONE && ggroup->nrstyle.stroke.type == NRStyle::PAINT_NONE)

return NR_ARENA_ITEM_STATE_ALL;

Geom::OptRect b;

Geom::Matrix t = glyphs->g_transform * gc->transform;

glyphs->x = t[4];

glyphs->y = t[5];

b = bounds_exact_transformed(*glyphs->font->PathVector(glyphs->glyph), t);

if (b && ggroup->nrstyle.stroke.type != NRStyle::PAINT_NONE) {

float width, scale;

scale = gc->transform.descrim();

width = MAX(0.125, ggroup->nrstyle.stroke_width * scale);

if ( fabs(ggroup->nrstyle.stroke_width * scale) > 0.01 ) { // FIXME: this is always true

b->expandBy(width);

}

// those pesky miters, now

float miterMax = width * ggroup->nrstyle.miter_limit;

if ( miterMax > 0.01 ) {

// grunt mode. we should compute the various miters instead

// (one for each point on the curve)

b->expandBy(miterMax);

}

}

if (b) {

item->bbox.x0 = static_cast<NR::ICoord>(floor(b->left()));

item->bbox.y0 = static_cast<NR::ICoord>(floor(b->top()));

item->bbox.x1 = static_cast<NR::ICoord>(ceil (b->right()));

item->bbox.y1 = static_cast<NR::ICoord>(ceil (b->bottom()));

} else {

item->bbox.x0 = 0;

item->bbox.y0 = 0;

item->bbox.x1 = -1;

item->bbox.y1 = -1;

}

return NR_ARENA_ITEM_STATE_ALL;

}

static guint

nr_arena_glyphs_clip(cairo_t *ct, NRArenaItem *item, NRRectL */*area*/)

{

NRArenaGlyphs *glyphs;

glyphs = NR_ARENA_GLYPHS(item);

if (!glyphs->font) return item->state;

/* TODO : render to greyscale pixblock provided for clipping */

return item->state;

}

static NRArenaItem *

nr_arena_glyphs_pick(NRArenaItem *item, Geom::Point p, gdouble delta, unsigned int /*sticky*/)

{

NRArenaGlyphs *glyphs;

glyphs = NR_ARENA_GLYPHS(item);

if (!glyphs->font ) return NULL;

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

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

/* With text we take a simple approach: pick if the point is in a characher bbox */

if ((x + delta >= item->bbox.x0) && (y + delta >= item->bbox.y0) && (x - delta <= item->bbox.x1) && (y - delta <= item->bbox.y1)) return item;

return NULL;

}

nr_arena_glyphs_set_path(NRArenaGlyphs *glyphs, SPCurve */*curve*/, unsigned int /*lieutenant*/, font_instance *font, gint glyph, Geom::Matrix const *transform)

{

nr_return_if_fail(glyphs != NULL);

nr_return_if_fail(NR_IS_ARENA_GLYPHS(glyphs));

nr_arena_item_request_render(NR_ARENA_ITEM(glyphs));

if (transform) {

glyphs->g_transform = *transform;

} else {

glyphs->g_transform.setIdentity();

}

if (font) font->Ref();

if (glyphs->font) glyphs->font->Unref();

glyphs->font=font;

glyphs->glyph = glyph;

nr_arena_item_request_update(NR_ARENA_ITEM(glyphs), NR_ARENA_ITEM_STATE_ALL, FALSE);

}

static void nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass);

static void nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group);

static void nr_arena_glyphs_group_finalize(NRObject *object);

static guint nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset);

static unsigned int nr_arena_glyphs_group_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);

static unsigned int nr_arena_glyphs_group_clip(cairo_t *ct, NRArenaItem *item, NRRectL *area);

static NRArenaItem *nr_arena_glyphs_group_pick(NRArenaItem *item, Geom::Point p, gdouble delta, unsigned int sticky);

static NRArenaGroupClass *group_parent_class;

nr_arena_glyphs_group_get_type(void)

{

static NRType type = 0;

if (!type) {

type = nr_object_register_type(NR_TYPE_ARENA_GROUP,

"NRArenaGlyphsGroup",

sizeof(NRArenaGlyphsGroupClass),

sizeof(NRArenaGlyphsGroup),

(void (*)(NRObjectClass *)) nr_arena_glyphs_group_class_init,

(void (*)(NRObject *)) nr_arena_glyphs_group_init);

}

return type;

}

static void

nr_arena_glyphs_group_class_init(NRArenaGlyphsGroupClass *klass)

{

NRObjectClass *object_class;

NRArenaItemClass *item_class;

object_class = (NRObjectClass *) klass;

item_class = (NRArenaItemClass *) klass;

group_parent_class = (NRArenaGroupClass *) ((NRObjectClass *) klass)->parent;

object_class->finalize = nr_arena_glyphs_group_finalize;

object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGlyphsGroup>;

item_class->update = nr_arena_glyphs_group_update;

item_class->render = nr_arena_glyphs_group_render;

item_class->clip = nr_arena_glyphs_group_clip;

item_class->pick = nr_arena_glyphs_group_pick;

}

static void

nr_arena_glyphs_group_init(NRArenaGlyphsGroup *group)

{

group->style = NULL;

group->paintbox.x0 = group->paintbox.y0 = 0.0F;

group->paintbox.x1 = group->paintbox.y1 = -1.0F;

}

static void

nr_arena_glyphs_group_finalize(NRObject *object)

{

NRArenaGlyphsGroup *group=static_cast<NRArenaGlyphsGroup *>(object);

if (group->style) {

sp_style_unref(group->style);

group->style = NULL;

}

((NRObjectClass *) group_parent_class)->finalize(object);

}

static guint

nr_arena_glyphs_group_update(NRArenaItem *item, NRRectL *area, NRGC *gc, guint state, guint reset)

{

NRArenaGlyphsGroup *group = NR_ARENA_GLYPHS_GROUP(item);

group->nrstyle.update();

if (((NRArenaItemClass *) group_parent_class)->update)

return ((NRArenaItemClass *) group_parent_class)->update(item, area, gc, state, reset);

return NR_ARENA_ITEM_STATE_ALL;

}

static unsigned int

nr_arena_glyphs_group_render(cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int /*flags*/)

{

NRArenaItem *child;

NRArenaGroup *group = NR_ARENA_GROUP(item);

NRArenaGlyphsGroup *ggroup = NR_ARENA_GLYPHS_GROUP(item);

if (!ct) return item->state;

if (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE) {

guint32 rgba = item->arena->outlinecolor;

// FIXME: we use RGBA buffers but cairo writes BGRA (on i386), so we must cheat

// by setting color channels in the "wrong" order

cairo_set_source_rgba(ct, SP_RGBA32_B_F(rgba), SP_RGBA32_G_F(rgba), SP_RGBA32_R_F(rgba), SP_RGBA32_A_F(rgba));

cairo_set_tolerance(ct, 1.25); // low quality, but good enough for outline mode

NRRect temp(area->x0, area->y0, area->x1, area->y1);

Geom::OptRect area_2geom = temp.upgrade_2geom();

for (child = group->children; child != NULL; child = child->next) {

NRArenaGlyphs *g = NR_ARENA_GLYPHS(child);

Geom::PathVector const * pathv = g->font->PathVector(g->glyph);

cairo_new_path(ct);

Geom::Matrix transform = g->g_transform * group->ctm;

feed_pathvector_to_cairo (ct, *pathv, transform, area_2geom, false, 0);

cairo_fill(ct);

}

return item->state;

}

// NOTE: this is very similar to nr-arena-shape.cpp; the only difference is path feeding

bool needs_opacity = ((1.0 - ggroup->nrstyle.opacity) >= 0.01);

bool has_stroke, has_fill;

cairo_save(ct);

cairo_translate(ct, -area->x0, -area->y0);

ink_cairo_transform(ct, ggroup->ctm);

has_fill = ggroup->nrstyle.prepareFill(ct, &ggroup->paintbox);

has_stroke = ggroup->nrstyle.prepareStroke(ct, &ggroup->paintbox);

if (has_fill || has_stroke) {

if (needs_opacity) {

cairo_push_group(ct);

}

for (NRArenaItem *child = ggroup->children; child != NULL; child = child->next) {

NRArenaGlyphs *g = NR_ARENA_GLYPHS(child);

Geom::PathVector const &pathv = *g->font->PathVector(g->glyph);

cairo_save(ct);

ink_cairo_transform(ct, g->g_transform);

feed_pathvector_to_cairo(ct, pathv);

cairo_restore(ct);

}

if (has_fill) {

ggroup->nrstyle.applyFill(ct);

cairo_fill_preserve(ct);

}

if (has_stroke) {

ggroup->nrstyle.applyStroke(ct);

cairo_stroke_preserve(ct);

}

cairo_new_path(ct); // clear path

if (needs_opacity) {

cairo_pop_group_to_source(ct);

cairo_paint_with_alpha(ct, ggroup->nrstyle.opacity);

}

} // has fill or stroke pattern

cairo_restore(ct);

return item->state;

}

static unsigned int

nr_arena_glyphs_group_clip(cairo_t *ct, NRArenaItem *item, NRRectL *area)

{

//NRArenaGroup *group = NR_ARENA_GROUP(item);

guint ret = item->state;

/* Render children fill mask */

/*

return ret;

}

static NRArenaItem *

nr_arena_glyphs_group_pick(NRArenaItem *item, Geom::Point p, gdouble delta, unsigned int sticky)

{

NRArenaItem *picked = NULL;

if (((NRArenaItemClass *) group_parent_class)->pick)

picked = ((NRArenaItemClass *) group_parent_class)->pick(item, p, delta, sticky);

if (picked) picked = item;

return picked;

}

nr_arena_glyphs_group_clear(NRArenaGlyphsGroup *sg)

{

NRArenaGroup *group = NR_ARENA_GROUP(sg);

nr_arena_item_request_render(NR_ARENA_ITEM(group));

while (group->children) {

nr_arena_item_remove_child(NR_ARENA_ITEM(group), group->children);

}

}

nr_arena_glyphs_group_add_component(NRArenaGlyphsGroup *sg, font_instance *font, int glyph, Geom::Matrix const &transform)

{

NRArenaGroup *group;

group = NR_ARENA_GROUP(sg);

Geom::PathVector const * pathv = ( font

? font->PathVector(glyph)

: NULL );

if ( pathv ) {

nr_arena_item_request_render(NR_ARENA_ITEM(group));

NRArenaItem *new_arena = NRArenaGlyphs::create(group->arena);

nr_arena_item_append_child(NR_ARENA_ITEM(group), new_arena);

nr_arena_item_unref(new_arena);

nr_arena_glyphs_set_path(NR_ARENA_GLYPHS(new_arena), NULL, FALSE, font, glyph, &transform);

}

}

nr_arena_glyphs_group_set_style(NRArenaGlyphsGroup *sg, SPStyle *style)

{

nr_return_if_fail(sg != NULL);

nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(sg));

if (style) sp_style_ref(style);

if (sg->style) sp_style_unref(sg->style);

sg->style = style;

sg->nrstyle.set(style);

nr_arena_item_request_update(NR_ARENA_ITEM(sg), NR_ARENA_ITEM_STATE_ALL, FALSE);

}

nr_arena_glyphs_group_set_paintbox(NRArenaGlyphsGroup *gg, NRRect const *pbox)

{

nr_return_if_fail(gg != NULL);

nr_return_if_fail(NR_IS_ARENA_GLYPHS_GROUP(gg));

nr_return_if_fail(pbox != NULL);

if ((pbox->x0 < pbox->x1) && (pbox->y0 < pbox->y1)) {

gg->paintbox.x0 = pbox->x0;

gg->paintbox.y0 = pbox->y0;

gg->paintbox.x1 = pbox->x1;

gg->paintbox.y1 = pbox->y1;

} else {

gg->paintbox.x0 = gg->paintbox.y0 = 0.0F;

gg->paintbox.x1 = gg->paintbox.y1 = -1.0F;

}

nr_arena_item_request_update(NR_ARENA_ITEM(gg), NR_ARENA_ITEM_STATE_ALL, FALSE);

}