void wxSVGCanvasCairo::DrawPath(cairo_t* cr, wxSVGCanvasPathCairo& canvasPath, const wxSVGMatrix& matrix,
const wxCSSStyleDeclaration& style, wxSVGSVGElement& svgElem) {
SetMatrix(cr, matrix);
// Filling
if (canvasPath.GetFill() && style.GetFill().Ok() && style.GetFill().GetPaintType() != wxSVG_PAINTTYPE_NONE) {
cairo_path_t* path = canvasPath.GetPath();
cairo_append_path(cr, path);
SetPaint(cr, style.GetFill(), style.GetOpacity()*style.GetFillOpacity(), canvasPath, svgElem, matrix);
cairo_fill(cr);
cairo_path_destroy(path);
}
// Stroking
if (style.GetStroke().Ok() && style.GetStrokeWidth() > 0
&& style.GetStroke().GetPaintType() != wxSVG_PAINTTYPE_NONE) {
cairo_path_t* path = canvasPath.GetPath();
cairo_append_path(cr, path);
SetPaint(cr, style.GetStroke(), style.GetOpacity()*style.GetStrokeOpacity(), canvasPath, svgElem, matrix);
wxSVGCanvasPathCairo::ApplyStrokeStyle(cr, style);
cairo_stroke(cr);
cairo_path_destroy(path);
}
// marker
if (style.HasMarkerStart()) {
DrawMarker(style.GetMarkerStart().GetStringValue(), wxSVGMark::START, canvasPath, matrix, style, svgElem);
}
if (style.HasMarkerMid()) {
DrawMarker(style.GetMarkerMid().GetStringValue(), wxSVGMark::MID, canvasPath, matrix, style, svgElem);
}
if (style.HasMarkerEnd()) {
DrawMarker(style.GetMarkerEnd().GetStringValue(), wxSVGMark::END, canvasPath, matrix, style, svgElem);
}
}
void Context::copyPathFlat( cinder::Shape2d *resultPath )
{
resultPath->clear();
cairo_path_t *path = cairo_copy_path_flat( mCairo );
convertCairoToCinderPath( path, resultPath );
cairo_path_destroy( path );
}
cairo_bool_t cairocks_map_path_onto(cairo_t* cr, cairo_path_t* path) {
cairo_path_t* cur_path = 0;
parametrized_path_t param;
if(cairo_status(cr) || !path) return FALSE;
cur_path = cairo_copy_path(cr);
param.path = path;
param.parametrization = parametrize_path(path);
cairo_new_path(cr);
transform_path(
cur_path,
(transform_point_func_t)(point_on_path),
¶m
);
cairo_append_path(cr, cur_path);
free(param.parametrization);
cairo_path_destroy(cur_path);
return TRUE;
}
String Path::debugString() const
{
String string = "";
cairo_path_t* path = cairo_copy_path(platformPath()->m_cr);
cairo_path_data_t* data;
if (!path->num_data )
string = "EMPTY";
for (int i = 0; i < path->num_data; i += path->data[i].header.length) {
data = &path->data[i];
switch (data->header.type) {
case CAIRO_PATH_MOVE_TO:
string += String::format("M %.2f,%.2f",
data[1].point.x, data[1].point.y);
break;
case CAIRO_PATH_LINE_TO:
string += String::format("L %.2f,%.2f",
data[1].point.x, data[1].point.y);
break;
case CAIRO_PATH_CURVE_TO:
string += String::format("C %.2f,%.2f,%.2f,%.2f,%.2f,%.2f",
data[1].point.x, data[1].point.y,
data[2].point.x, data[2].point.y,
data[3].point.x, data[3].point.y);
break;
case CAIRO_PATH_CLOSE_PATH:
string += "X";
break;
}
}
cairo_path_destroy(path);
return string;
}
static int
path_gc (lua_State *L) {
cairo_path_t **obj = luaL_checkudata(L, 1, MT_NAME_PATH);
cairo_path_destroy(*obj);
*obj = 0;
return 0;
}
static void cleanup
( void )
{
gint i;
for (i=0;i<4;i++)
{ cairo_path_destroy(arrow_paths[i]); }
}
// cairo_public void
// cairo_path_destroy (cairo_path_t *path);
static int l_cairo_path_destroy(lua_State* L)
{
cairo_path_t *path;
remove_Context(L, 1); // if called via Context userdata
path = get_cairo_path_t (L, 1);
cairo_path_destroy (path);
return 0;
}
Path::Path(const Path& other)
: m_path(new CairoPath())
{
cairo_t* cr = platformPath()->m_cr;
cairo_path_t* p = cairo_copy_path(other.platformPath()->m_cr);
cairo_append_path(cr, p);
cairo_path_destroy(p);
}
/*!
* \brief Destruction of the object
* \memberof Outline
*/
static void
outline_destroy (Outline *outline)
{
if (outline->path)
cairo_path_destroy (outline->path);
g_free (outline->name);
object_destroy(&outline->object);
/* but not the object itself? */
}
void cairo_to_clipper(cairo_t* cr,
Polygons &pg,
int scaling_factor,
Transform transform)
{
if (scaling_factor > 8 || scaling_factor < 0)
throw clipperCairoException("cairo_to_clipper: invalid scaling factor");
double scaling = std::pow((double)10, scaling_factor);
pg.clear();
cairo_path_t *path = cairo_copy_path_flat(cr);
int poly_count = 0;
for (int i = 0; i < path->num_data; i += path->data[i].header.length) {
if( path->data[i].header.type == CAIRO_PATH_CLOSE_PATH) poly_count++;
}
pg.resize(poly_count);
int i = 0, pc = 0;
while (pc < poly_count)
{
int vert_count = 1;
int j = i;
while(j < path->num_data &&
path->data[j].header.type != CAIRO_PATH_CLOSE_PATH)
{
if (path->data[j].header.type == CAIRO_PATH_LINE_TO)
vert_count++;
j += path->data[j].header.length;
}
pg[pc].resize(vert_count);
if (path->data[i].header.type != CAIRO_PATH_MOVE_TO) {
pg.resize(pc);
break;
}
pg[pc][0].X = Round(path->data[i+1].point.x *scaling);
pg[pc][0].Y = Round(path->data[i+1].point.y *scaling);
if (transform != tNone)
transform_point(cr, transform, &pg[pc][0].X, &pg[pc][0].Y);
i += path->data[i].header.length;
j = 1;
while (j < vert_count && i < path->num_data &&
path->data[i].header.type == CAIRO_PATH_LINE_TO) {
pg[pc][j].X = Round(path->data[i+1].point.x *scaling);
pg[pc][j].Y = Round(path->data[i+1].point.y *scaling);
if (transform != tNone)
transform_point(cr, transform, &pg[pc][j].X, &pg[pc][j].Y);
j++;
i += path->data[i].header.length;
}
pc++;
i += path->data[i].header.length;
}
cairo_path_destroy(path);
}
/* PycairoPath_FromPath
* Create a new PycairoPath from a cairo_path_t
* path - a cairo_path_t to 'wrap' into a Python object.
* path is unreferenced if the PycairoPath creation fails, or if path
* is in an error status.
* Return value: New reference or NULL on failure
*/
PyObject *
PycairoPath_FromPath (cairo_path_t *path) {
PyObject *o;
assert (path != NULL);
if (Pycairo_Check_Status (path->status)) {
cairo_path_destroy (path);
return NULL;
}
o = PycairoPath_Type.tp_alloc (&PycairoPath_Type, 0);
if (o)
((PycairoPath *)o)->path = path;
else
cairo_path_destroy (path);
return o;
}
static void
_rsvg_node_text_type_text_path (RsvgNodeTextPath * self, RsvgDrawingCtx * ctx,
gdouble * x, gdouble * y,
gboolean * lastwasspace, gboolean usetextonly)
{
if (self->link && self->link->type == RSVG_NODE_TYPE_PATH) {
guint i;
// Resolve the xlink:href id and get its cairo path object
cairo_path_t *path = ((RsvgNodePath *)self->link)->path;
// Get the cairo_t context
RsvgCairoRender *render = RSVG_CAIRO_RENDER (ctx->render);
cairo_t *cr = render->cr;
// Flatten path
cairo_save(cr);
cairo_new_path(cr);
cairo_append_path(cr, path);
path = cairo_copy_path_flat (cr);
cairo_restore(cr);
// TODO recursively draw children
rsvg_push_discrete_layer (ctx);
for (i = 0; i < self->super.children->len; i++) {
RsvgNode *node = g_ptr_array_index (self->super.children, i);
RsvgNodeType type = RSVG_NODE_TYPE (node);
if (type == RSVG_NODE_TYPE_CHARS) {
RsvgNodeChars *chars = (RsvgNodeChars *) node;
GString *str = _rsvg_text_chomp (rsvg_current_state (ctx), chars->contents, lastwasspace);
double offset = 0;
// Factor in start offset
// Handle percentages as percent of path length
if (self->startOffset.factor == 'p') {
offset = self->startOffset.length *_rsvg_path_length(path);
} else {
offset = _rsvg_css_normalize_length (&self->startOffset,
ctx, 'h');
}
if (PANGO_GRAVITY_IS_VERTICAL (rsvg_current_state(ctx)->text_gravity))
*y += offset;
else
*x += offset;
draw_twisted (ctx, cr, path, x, y, str->str);
g_string_free (str, TRUE);
}
}
rsvg_pop_discrete_layer (ctx);
cairo_path_destroy (path);
}
}
void GraphicsContext::addPath(const Path& path)
{
if (paintingDisabled())
return;
cairo_t* cr = m_data->cr;
cairo_path_t *p = cairo_copy_path(path.platformPath()->m_cr);
cairo_append_path(cr, p);
cairo_path_destroy(p);
}
/* ============ cairo_path_t * support ============ */
static HB_GARBAGE_FUNC( hb_cairo_path_destructor )
{
cairo_path_t ** ppPath = ( cairo_path_t ** ) Cargo;
if( *ppPath )
{
cairo_path_destroy( *ppPath );
*ppPath = NULL;
}
}
static void
draw_twisted (RsvgDrawingCtx * ctx, cairo_t *cr, cairo_path_t *path,
double *x, double *y, const char *text)
{
cairo_path_t *path_copy;
cairo_save (cr);
/* Decrease tolerance a bit, since it's going to be magnified */
cairo_set_tolerance (cr, 0.01);
/* Using cairo_copy_path() here shows our deficiency in handling
* Bezier curves, specially around sharper curves.
*
* Using cairo_copy_path_flat() on the other hand, magnifies the
* flattening error with large off-path values. We decreased
* tolerance for that reason. Increase tolerance to see that
* artifact.
*/
// Load the previously drawn path in order to make a copy
cairo_new_path(cr);
cairo_append_path(cr, path);
path_copy = cairo_copy_path_flat (cr);
// Draw the text
cairo_new_path (cr);
draw_text (ctx, cr, x, y, text);
map_path_onto (cr, path_copy);
cairo_path_destroy (path_copy);
// Render the text path using current text settings
//cairo_fill_preserve (cr);
path_copy = cairo_copy_path(cr);
ctx->render->render_path(ctx, path_copy);
cairo_path_destroy (path_copy);
cairo_restore (cr);
}
void
CairoPathContext::CopyPathTo(cairo_t* aToContext, Matrix& aTransform)
{
if (aToContext != mContext) {
CairoTempMatrix tempMatrix(mContext, aTransform);
cairo_path_t* path = cairo_copy_path(mContext);
cairo_new_path(aToContext);
cairo_append_path(aToContext, path);
cairo_path_destroy(path);
}
}
static void
gjs_cairo_path_finalize(JSContext *context,
JSObject *obj)
{
GjsCairoPath *priv;
priv = JS_GetPrivate(context, obj);
if (priv == NULL)
return;
cairo_path_destroy(priv->path);
g_slice_free(GjsCairoPath, priv);
}
static void
gjs_cairo_path_finalize(JSFreeOp *fop,
JSObject *obj)
{
GjsCairoPath *priv;
priv = (GjsCairoPath*) JS_GetPrivate(obj);
if (priv == NULL)
return;
cairo_path_destroy(priv->path);
g_slice_free(GjsCairoPath, priv);
}
static void
cr_rectangle_set_property(GObject *object, guint property_id,
const GValue *value, GParamSpec *pspec)
{
CrRectangle *rectangle = (CrRectangle*) object;
double val;
switch (property_id) {
case PROP_WIDTH:
val = g_value_get_double (value);
if (!(rectangle->flags & CR_RECTANGLE_WIDTH) ||
val != rectangle->width) {
rectangle->width = val;
rectangle->flags |= CR_RECTANGLE_WIDTH;
if (CR_PATH(rectangle)->path)
cairo_path_destroy(CR_PATH(rectangle)->
path);
CR_PATH(rectangle)->path = NULL;
cr_item_request_update(CR_ITEM(rectangle));
}
break;
case PROP_HEIGHT:
val = g_value_get_double (value);
if (!(rectangle->flags & CR_RECTANGLE_HEIGHT) ||
val != rectangle->height) {
rectangle->height = val;
rectangle->flags |= CR_RECTANGLE_HEIGHT;
if (CR_PATH(rectangle)->path)
cairo_path_destroy(CR_PATH(rectangle)->
path);
CR_PATH(rectangle)->path = NULL;
cr_item_request_update(CR_ITEM(rectangle));
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
property_id, pspec);
}
}
bool Path::isEmpty() const
{
cairo_t* cr = platformPath()->m_cr;
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,5,10)
return !cairo_has_current_point(cr);
#else
cairo_path_t* p = cairo_copy_path(cr);
bool hasData = p->num_data;
cairo_path_destroy(p);
return !hasData;
#endif
}
Path& Path::operator=(const Path& other)
{
if (&other == this)
return *this;
clear();
cairo_t* cr = platformPath()->m_cr;
cairo_path_t* p = cairo_copy_path(other.platformPath()->m_cr);
cairo_append_path(cr, p);
cairo_path_destroy(p);
return *this;
}
/* Returns length of a Bezier curve. Seems like computing that analytically is not easy. The
* code just flattens the curve using cairo and adds the length of segments. */
static double curve_length(
double x0,
double y0,
double x1,
double y1,
double x2,
double y2,
double x3,
double y3
) {
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_A8, 0, 0);
cairo_t* cr = cairo_create(surface);
double length = 0;
cairo_path_t* path;
cairo_path_data_t* data;
cairo_path_data_t current_point;
int i;
current_point.point.x = 0.0;
current_point.point.y = 0.0;
cairo_surface_destroy(surface);
cairo_move_to(cr, x0, y0);
cairo_curve_to(cr, x1, y1, x2, y2, x3, y3);
path = cairo_copy_path_flat(cr);
for(i = 0; i < path->num_data; i += path->data[i].header.length) {
data = &path->data[i];
switch (data->header.type) {
case CAIRO_PATH_MOVE_TO:
current_point = data[1];
break;
case CAIRO_PATH_LINE_TO:
length += two_points_distance(¤t_point, &data[1]);
current_point = data[1];
break;
default:
break;
}
}
cairo_path_destroy(path);
cairo_destroy(cr);
return length;
}
static void
path_dealloc(PycairoPath *p)
{
#ifdef DEBUG
printf("path_dealloc start\n");
#endif
if (p->path) {
cairo_path_destroy(p->path);
p->path = NULL;
}
p->ob_type->tp_free((PyObject *)p);
#ifdef DEBUG
printf("path_dealloc end\n");
#endif
}
void GraphicsContext::clip(const Path& path)
{
if (paintingDisabled())
return;
cairo_t* cr = m_data->cr;
cairo_path_t* p = cairo_copy_path(path.platformPath()->m_cr);
cairo_append_path(cr, p);
cairo_path_destroy(p);
cairo_fill_rule_t savedFillRule = cairo_get_fill_rule(cr);
cairo_set_fill_rule(cr, CAIRO_FILL_RULE_WINDING);
cairo_clip(cr);
cairo_set_fill_rule(cr, savedFillRule);
m_data->clip(path);
}
PathCairo::PathCairo(cairo_t *aContext)
: mFillRule(FillRule::FILL_WINDING)
, mContainingContext(nullptr)
{
cairo_path_t *path = cairo_copy_path(aContext);
// XXX - mCurrentPoint is not properly set here, the same is true for the
// D2D Path code, we never require current point when hitting this codepath
// but this should be fixed.
for (int i = 0; i < path->num_data; i++) {
mPathData.push_back(path->data[i]);
}
cairo_path_destroy(path);
}
int freeSymbolCairo(symbolObj *s) {
if(!s->renderer_cache)
return MS_SUCCESS;
switch(s->type) {
case MS_SYMBOL_VECTOR:
cairo_path_destroy(s->renderer_cache);
break;
case MS_SYMBOL_PIXMAP:
cairo_surface_finish(s->renderer_cache);
cairo_surface_destroy(s->renderer_cache);
break;
}
s->renderer_cache=NULL;
return MS_SUCCESS;
}
static void
path_dealloc(PycairoPath *o) {
#ifdef DEBUG
printf("path_dealloc start\n");
#endif
if (o->path) {
cairo_path_destroy(o->path);
o->path = NULL;
}
//o->ob_type->tp_free((PyObject *)o);
Py_TYPE(o)->tp_free(o);
#ifdef DEBUG
printf("path_dealloc end\n");
#endif
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_matrix_t m;
int xoffset = 50;
int yoffset = 50;
cairo_surface_t *shadow;
cairo_t *shadow_cr;
cairo_path_t *path;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_translate (cr, 130, 130);
cairo_rotate (cr, .5);//2*M_PI*angle/360);
cairo_rectangle (cr, 0, 0, 50, 100);
cairo_get_matrix (cr, &m);
shadow = cairo_surface_create_similar (cairo_get_target (cr),
CAIRO_CONTENT_COLOR_ALPHA,
600 - xoffset,
600 - yoffset);
cairo_surface_set_device_offset (shadow, xoffset, yoffset);
shadow_cr = cairo_create (shadow);
cairo_surface_destroy (shadow);
cairo_set_source_rgb (shadow_cr, 0, 1, 0);
cairo_set_matrix (shadow_cr, &m);
path = cairo_copy_path (cr);
cairo_new_path (shadow_cr);
cairo_append_path (shadow_cr, path);
cairo_fill (shadow_cr);
cairo_path_destroy (path);
cairo_identity_matrix (cr);
cairo_translate (cr, 10, 50);
cairo_set_source_surface (cr, cairo_get_target (shadow_cr), 0, 0);
cairo_paint (cr);
cairo_set_matrix (cr, &m);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_fill (cr);
cairo_destroy (shadow_cr);
return CAIRO_TEST_SUCCESS;
}
/* Projects the current path of cr onto the provided path. */
static void
map_path_onto (cairo_t *cr, cairo_path_t *path)
{
cairo_path_t *current_path;
parametrized_path_t param;
param.path = path;
param.parametrization = parametrize_path (path);
current_path = cairo_copy_path (cr);
cairo_new_path (cr);
transform_path (current_path,
(transform_point_func_t) point_on_path, ¶m);
cairo_append_path (cr, current_path);
cairo_path_destroy (current_path);
g_free (param.parametrization);
}
void PlatformContextCairo::clipForPatternFilling(const GraphicsContextState& state)
{
ASSERT(state.fillPattern);
// Hold current cairo path in a variable for restoring it after configuring the pattern clip rectangle.
auto currentPath = cairo_copy_path(m_cr.get());
cairo_new_path(m_cr.get());
// Initialize clipping extent from current cairo clip extents, then shrink if needed according to pattern.
// Inspired by GraphicsContextQt::drawRepeatPattern.
double x1, y1, x2, y2;
cairo_clip_extents(m_cr.get(), &x1, &y1, &x2, &y2);
FloatRect clipRect(x1, y1, x2 - x1, y2 - y1);
Image* patternImage = state.fillPattern->tileImage();
ASSERT(patternImage);
const AffineTransform& patternTransform = state.fillPattern->getPatternSpaceTransform();
FloatRect patternRect = patternTransform.mapRect(FloatRect(0, 0, patternImage->width(), patternImage->height()));
bool repeatX = state.fillPattern->repeatX();
bool repeatY = state.fillPattern->repeatY();
if (!repeatX) {
clipRect.setX(patternRect.x());
clipRect.setWidth(patternRect.width());
}
if (!repeatY) {
clipRect.setY(patternRect.y());
clipRect.setHeight(patternRect.height());
}
if (!repeatX || !repeatY) {
cairo_rectangle(m_cr.get(), clipRect.x(), clipRect.y(), clipRect.width(), clipRect.height());
cairo_clip(m_cr.get());
}
// Restoring cairo path.
cairo_append_path(m_cr.get(), currentPath);
cairo_path_destroy(currentPath);
}
