![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/extension/internal/cairo-render-context.cpp b/src/extension/internal/cairo-render-context.cpp
index d1462e52e5e43ae663bd381a351c1aa84650a4e2..18a654e275731310005e360bdc1c76c49a1518c3 100644 (file)
-#define __SP_CAIRO_RENDER_CONTEXT_C__
-
/** \file
* Rendering with Cairo.
*/
/*
* Author:
* Miklos Erdelyi <erdelyim@gmail.com>
+ * Jon A. Cruz <jon@joncruz.org>
+ * Abhishek Sharma
*
* Copyright (C) 2006 Miklos Erdelyi
*
#include <pango/pangofc-fontmap.h>
//#define TRACE(_args) g_printf _args
+//#define TRACE(_args) g_message _args
#define TRACE(_args)
//#define TEST(_args) _args
#define TEST(_args)
CairoRenderContext::CairoRenderContext(CairoRenderer *parent) :
_dpi(72),
- _pdf_level(0),
+ _pdf_level(1),
_ps_level(1),
_eps(false),
_is_texttopath(FALSE),
_renderer(parent),
_render_mode(RENDER_MODE_NORMAL),
_clip_mode(CLIP_MODE_MASK)
-{}
+{
+ font_table = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, font_data_free);
+}
CairoRenderContext::~CairoRenderContext(void)
{
+ if(font_table != NULL) {
+ g_hash_table_remove_all(font_table);
+ }
+
if (_cr) cairo_destroy(_cr);
if (_surface) cairo_surface_destroy(_surface);
if (_layout) g_object_unref(_layout);
}
+void CairoRenderContext::font_data_free(gpointer data)
+{
+ cairo_font_face_t *font_face = (cairo_font_face_t *)data;
+ if (font_face) {
+ cairo_font_face_destroy(font_face);
+ }
+}
CairoRenderer*
CairoRenderContext::getRenderer(void) const
(int)ceil(width), (int)ceil(height));
new_context->_cr = cairo_create(surface);
new_context->_surface = surface;
+ new_context->_width = width;
+ new_context->_height = height;
new_context->_is_valid = TRUE;
return new_context;
// copy over the correct CTM
// It must be stored in item_transform of current state after pushState.
- Geom::Matrix item_transform;
+ Geom::Matrix item_transform;
if (_state->parent_has_userspace)
item_transform = getParentState()->transform * _state->item_transform;
else
surface_width *= 1.25;
surface_height *= 1.25;
}
- mask_ctx->setupSurface( surface_width, surface_height );
+ if (!mask_ctx->setupSurface( surface_width, surface_height )) {
+ TRACE(("mask: setupSurface failed\n"));
+ _renderer->destroyContext(mask_ctx);
+ return;
+ }
TRACE(("mask surface: %f x %f at %i dpi\n", surface_width, surface_height, _dpi ));
+ // Mask should start black, but it is created white.
+ cairo_set_source_rgba(mask_ctx->_cr, 0.0, 0.0, 0.0, 1.0);
+ cairo_rectangle(mask_ctx->_cr, 0, 0, surface_width, surface_height);
+ cairo_fill(mask_ctx->_cr);
+
// set rendering mode to normal
setRenderMode(RENDER_MODE_NORMAL);
int stride = cairo_image_surface_get_stride(mask_image);
unsigned char *pixels = cairo_image_surface_get_data(mask_image);
- // premultiply with opacity
// In SVG, the rgb channels as well as the alpha channel is used in masking.
// In Cairo, only the alpha channel is used thus requiring this conversion.
+ // SVG specifies that RGB be converted to alpha using luminance-to-alpha.
+ // Notes: This calculation assumes linear RGB values. VERIFY COLOR SPACE!
+ // The incoming pixel values already include alpha, fill-opacity, etc.,
+ // however, opacity must still be applied.
TRACE(("premul w/ %f\n", opacity));
- guint8 int_opacity = (guint8)(255 * opacity);
+ const float coeff_r = 0.2125 / 255.0;
+ const float coeff_g = 0.7154 / 255.0;
+ const float coeff_b = 0.0721 / 255.0;
for (int row = 0 ; row < height; row++) {
unsigned char *row_data = pixels + (row * stride);
for (int i = 0 ; i < width; i++) {
guint32 *pixel = (guint32 *)row_data + i;
- *pixel = ((((*pixel & 0x00ff0000) >> 16) * 13817 +
- ((*pixel & 0x0000ff00) >> 8) * 46518 +
- ((*pixel & 0x000000ff) ) * 4688) *
- int_opacity);
+ float lum_alpha = (((*pixel & 0x00ff0000) >> 16) * coeff_r +
+ ((*pixel & 0x0000ff00) >> 8) * coeff_g +
+ ((*pixel & 0x000000ff) ) * coeff_b );
+ // lum_alpha can be slightly greater than 1 due to rounding errors...
+ // but this should be OK since it doesn't matter what the lower
+ // six hexadecimal numbers of *pixel are.
+ *pixel = (guint32)(0xff000000 * lum_alpha * opacity);
}
}
if (_vector_based_target && _stream == NULL)
return false;
+ _width = width;
+ _height = height;
+
cairo_surface_t *surface = NULL;
+ cairo_matrix_t ctm;
+ cairo_matrix_init_identity (&ctm);
switch (_target) {
case CAIRO_SURFACE_TYPE_IMAGE:
surface = cairo_image_surface_create(_target_format, (int)ceil(width), (int)ceil(height));
#ifdef CAIRO_HAS_PDF_SURFACE
case CAIRO_SURFACE_TYPE_PDF:
surface = cairo_pdf_surface_create_for_stream(Inkscape::Extension::Internal::_write_callback, _stream, width, height);
+#if (CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 10, 0))
+ cairo_pdf_surface_restrict_to_version(surface, (cairo_pdf_version_t)_pdf_level);
+#endif
break;
#endif
#ifdef CAIRO_HAS_PS_SURFACE
case CAIRO_SURFACE_TYPE_PS:
surface = cairo_ps_surface_create_for_stream(Inkscape::Extension::Internal::_write_callback, _stream, width, height);
-#if (CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 5, 2))
if(CAIRO_STATUS_SUCCESS != cairo_surface_status(surface)) {
return FALSE;
}
- cairo_ps_surface_restrict_to_level (surface, (cairo_ps_level_t)_ps_level);
- cairo_ps_surface_set_eps (surface, (cairo_bool_t) _eps);
+#if (CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 5, 2))
+ cairo_ps_surface_restrict_to_level(surface, (cairo_ps_level_t)_ps_level);
+ cairo_ps_surface_set_eps(surface, (cairo_bool_t) _eps);
+#endif
+ // Cairo calculates the bounding box itself, however we want to override this. See Launchpad bug #380501
+#if (CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 11, 2))
+ if (override_bbox) {
+ cairo_ps_dsc_comment(surface, "%%BoundingBox: 100 100 200 200");
+ cairo_ps_dsc_comment(surface, "%%PageBoundingBox: 100 100 200 200");
+ }
#endif
break;
#endif
break;
}
- return _finishSurfaceSetup (surface);
+ return _finishSurfaceSetup (surface, &ctm);
}
bool
CairoRenderContext::_finishSurfaceSetup(cairo_surface_t *surface, cairo_matrix_t *ctm)
{
if(surface == NULL) {
- return FALSE;
+ return false;
}
if(CAIRO_STATUS_SUCCESS != cairo_surface_status(surface)) {
- return FALSE;
+ return false;
}
_cr = cairo_create(surface);
+ if(CAIRO_STATUS_SUCCESS != cairo_status(_cr)) {
+ return false;
+ }
if (ctm)
cairo_set_matrix(_cr, ctm);
_surface = surface;
g_assert( g_slist_length(_state_stack) > 0 );
}
-static bool pattern_hasItemChildren (SPPattern *pat)
+static bool pattern_hasItemChildren(SPPattern *pat)
{
- for (SPObject *child = sp_object_first_child(SP_OBJECT(pat)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
+ bool hasItems = false;
+ for ( SPObject *child = pat->firstChild() ; child && !hasItems; child = child->getNext() ) {
if (SP_IS_ITEM (child)) {
- return true;
+ hasItems = true;
}
}
- return false;
+ return hasItems;
}
cairo_pattern_t*
@@ -1005,7 +1057,7 @@ CairoRenderContext::_createPatternPainter(SPPaintServer const *const paintserver
}
- // Calculate the size of the surface which has to be created
+ // Calculate the size of the surface which has to be created
#define SUBPIX_SCALE 100
// Cairo requires an integer pattern surface width/height.
// Subtract 0.5 to prevent small rounding errors from increasing pattern size by one pixel.
@@ -1035,14 +1087,14 @@ CairoRenderContext::_createPatternPainter(SPPaintServer const *const paintserver
// create arena and group
NRArena *arena = NRArena::create();
- unsigned dkey = sp_item_display_key_new(1);
+ unsigned dkey = SPItem::display_key_new(1);
// show items and render them
for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
if (pat_i && SP_IS_OBJECT (pat_i) && pattern_hasItemChildren(pat_i)) { // find the first one with item children
- for (SPObject *child = sp_object_first_child(SP_OBJECT(pat_i)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
+ for ( SPObject *child = pat_i->firstChild() ; child; child = child->getNext() ) {
if (SP_IS_ITEM (child)) {
- sp_item_invoke_show (SP_ITEM (child), arena, dkey, SP_ITEM_REFERENCE_FLAGS);
+ SP_ITEM (child)->invoke_show (arena, dkey, SP_ITEM_REFERENCE_FLAGS);
_renderer->renderItem(pattern_ctx, SP_ITEM (child));
}
}
@@ -1069,9 +1121,9 @@ CairoRenderContext::_createPatternPainter(SPPaintServer const *const paintserver
// hide all items
for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
if (pat_i && SP_IS_OBJECT (pat_i) && pattern_hasItemChildren(pat_i)) { // find the first one with item children
- for (SPObject *child = sp_object_first_child(SP_OBJECT(pat_i)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
+ for ( SPObject *child = pat_i->firstChild() ; child; child = child->getNext() ) {
if (SP_IS_ITEM (child)) {
- sp_item_invoke_hide (SP_ITEM (child), dkey);
+ SP_ITEM (child)->invoke_hide (dkey);
}
}
break; // do not go further up the chain if children are found
@@ -1092,11 +1144,11 @@ CairoRenderContext::_createPatternForPaintServer(SPPaintServer const *const pain
SPLinearGradient *lg=SP_LINEARGRADIENT(paintserver);
- sp_gradient_ensure_vector(SP_GRADIENT(lg)); // when exporting from commandline, vector is not built
+ SP_GRADIENT(lg)->ensureVector(); // when exporting from commandline, vector is not built
Geom::Point p1 (lg->x1.computed, lg->y1.computed);
Geom::Point p2 (lg->x2.computed, lg->y2.computed);
- if (pbox && SP_GRADIENT(lg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
+ if (pbox && SP_GRADIENT(lg)->getUnits() == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
// convert to userspace
Geom::Matrix bbox2user(pbox->x1 - pbox->x0, 0, 0, pbox->y1 - pbox->y0, pbox->x0, pbox->y0);
p1 *= bbox2user;
@@ -1116,12 +1168,12 @@ CairoRenderContext::_createPatternForPaintServer(SPPaintServer const *const pain
SPRadialGradient *rg=SP_RADIALGRADIENT(paintserver);
- sp_gradient_ensure_vector(SP_GRADIENT(rg)); // when exporting from commandline, vector is not built
+ SP_GRADIENT(rg)->ensureVector(); // when exporting from commandline, vector is not built
Geom::Point c (rg->cx.computed, rg->cy.computed);
Geom::Point f (rg->fx.computed, rg->fy.computed);
double r = rg->r.computed;
- if (pbox && SP_GRADIENT(rg)->units == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX)
+ if (pbox && SP_GRADIENT(rg)->getUnits() == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX)
apply_bbox2user = true;
// create radial gradient pattern
@@ -1144,7 +1196,7 @@ CairoRenderContext::_createPatternForPaintServer(SPPaintServer const *const pain
SPGradient *g = SP_GRADIENT(paintserver);
// set extend type
- SPGradientSpread spread = sp_gradient_get_spread(g);
+ SPGradientSpread spread = g->fetchSpread();
switch (spread) {
case SP_GRADIENT_SPREAD_REPEAT: {
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
cairo_set_source_rgba(_cr, rgb[0], rgb[1], rgb[2], alpha);
} else {
- g_assert( style->fill.isPaintserver()
+ g_assert( style->stroke.isPaintserver()
|| SP_IS_GRADIENT(SP_STYLE_STROKE_SERVER(style))
|| SP_IS_PATTERN(SP_STYLE_STROKE_SERVER(style)) );
@@ -1313,7 +1365,7 @@ CairoRenderContext::renderPathVector(Geom::PathVector const & pathv, SPStyle con
}
bool no_fill = style->fill.isNone() || style->fill_opacity.value == 0;
- bool no_stroke = style->stroke.isNone() || style->stroke_width.computed < 1e-9 ||
+ bool no_stroke = style->stroke.isNone() || style->stroke_width.computed < 1e-9 ||
style->stroke_opacity.value == 0;
if (no_fill && no_stroke)
@@ -1440,7 +1492,7 @@ CairoRenderContext::renderImage(guchar *px, unsigned int w, unsigned int h, unsi
#define GLYPH_ARRAY_SIZE 64
unsigned int
-CairoRenderContext::_showGlyphs(cairo_t *cr, PangoFont *font, std::vector<CairoGlyphInfo> const &glyphtext, bool is_stroke)
+CairoRenderContext::_showGlyphs(cairo_t *cr, PangoFont *font, std::vector<CairoGlyphInfo> const &glyphtext, bool path)
{
cairo_glyph_t glyph_array[GLYPH_ARRAY_SIZE];
cairo_glyph_t *glyphs = glyph_array;
@@ -1449,30 +1501,26 @@ CairoRenderContext::_showGlyphs(cairo_t *cr, PangoFont *font, std::vector<CairoG
glyphs = (cairo_glyph_t*)g_malloc(sizeof(cairo_glyph_t) * num_glyphs);
unsigned int num_invalid_glyphs = 0;
- unsigned int i = 0;
+ unsigned int i = 0; // is a counter for indexing the glyphs array, only counts the valid glyphs
for (std::vector<CairoGlyphInfo>::const_iterator it_info = glyphtext.begin() ; it_info != glyphtext.end() ; it_info++) {
// skip glyphs which are PANGO_GLYPH_EMPTY (0x0FFFFFFF)
// or have the PANGO_GLYPH_UNKNOWN_FLAG (0x10000000) set
if (it_info->index == 0x0FFFFFFF || it_info->index & 0x10000000) {
TRACE(("INVALID GLYPH found\n"));
+ g_message("Invalid glyph found, continuing...");
num_invalid_glyphs++;
continue;
}
- glyphs[i - num_invalid_glyphs].index = it_info->index;
- glyphs[i - num_invalid_glyphs].x = it_info->x;
- glyphs[i - num_invalid_glyphs].y = it_info->y;
+ glyphs[i].index = it_info->index;
+ glyphs[i].x = it_info->x;
+ glyphs[i].y = it_info->y;
i++;
}
- if (is_stroke) {
+ if (path) {
cairo_glyph_path(cr, glyphs, num_glyphs - num_invalid_glyphs);
} else {
- if (_is_texttopath) {
- cairo_glyph_path(cr, glyphs, num_glyphs - num_invalid_glyphs);
- cairo_fill_preserve(cr);
- } else {
- cairo_show_glyphs(cr, glyphs, num_glyphs - num_invalid_glyphs);
- }
+ cairo_show_glyphs(cr, glyphs, num_glyphs - num_invalid_glyphs);
}
if (num_glyphs > GLYPH_ARRAY_SIZE)
@@ -1487,10 +1535,11 @@ CairoRenderContext::renderGlyphtext(PangoFont *font, Geom::Matrix const *font_ma
{
// create a cairo_font_face from PangoFont
double size = style->font_size.computed;
- cairo_font_face_t *font_face = NULL;
+ gpointer fonthash = (gpointer)font;
+ cairo_font_face_t *font_face = (cairo_font_face_t *)g_hash_table_lookup(font_table, fonthash);
FcPattern *fc_pattern = NULL;
-
+
#ifdef USE_PANGO_WIN32
# ifdef CAIRO_HAS_WIN32_FONT
LOGFONTA *lfa = pango_win32_font_logfont(font);
@@ -1499,17 +1548,23 @@ CairoRenderContext::renderGlyphtext(PangoFont *font, Geom::Matrix const *font_ma
ZeroMemory(&lfw, sizeof(LOGFONTW));
memcpy(&lfw, lfa, sizeof(LOGFONTA));
MultiByteToWideChar(CP_OEMCP, MB_PRECOMPOSED, lfa->lfFaceName, LF_FACESIZE, lfw.lfFaceName, LF_FACESIZE);
-
- font_face = cairo_win32_font_face_create_for_logfontw(&lfw);
+
+ if(font_face == NULL) {
+ font_face = cairo_win32_font_face_create_for_logfontw(&lfw);
+ g_hash_table_insert(font_table, fonthash, font_face);
+ }
# endif
#else
# ifdef CAIRO_HAS_FT_FONT
PangoFcFont *fc_font = PANGO_FC_FONT(font);
fc_pattern = fc_font->font_pattern;
- font_face = cairo_ft_font_face_create_for_pattern(fc_pattern);
+ if(font_face == NULL) {
+ font_face = cairo_ft_font_face_create_for_pattern(fc_pattern);
+ g_hash_table_insert(font_table, fonthash, font_face);
+ }
# endif
#endif
-
+
cairo_save(_cr);
cairo_set_font_face(_cr, font_face);
@@ -1534,28 +1589,36 @@ CairoRenderContext::renderGlyphtext(PangoFont *font, Geom::Matrix const *font_ma
_showGlyphs(_cr, font, glyphtext, TRUE);
}
} else {
-
+ bool fill = false, stroke = false, have_path = false;
if (style->fill.isColor() || style->fill.isPaintserver()) {
- // set fill style
- _setFillStyle(style, NULL);
-
- _showGlyphs(_cr, font, glyphtext, FALSE);
+ fill = true;
}
if (style->stroke.isColor() || style->stroke.isPaintserver()) {
- // set stroke style
+ stroke = true;
+ }
+ if (fill) {
+ _setFillStyle(style, NULL);
+ if (_is_texttopath) {
+ _showGlyphs(_cr, font, glyphtext, true);
+ have_path = true;
+ if (stroke) cairo_fill_preserve(_cr);
+ else cairo_fill(_cr);
+ } else {
+ _showGlyphs(_cr, font, glyphtext, false);
+ }
+ }
+ if (stroke) {
_setStrokeStyle(style, NULL);
-
- // paint stroke
- _showGlyphs(_cr, font, glyphtext, TRUE);
+ if (!have_path) _showGlyphs(_cr, font, glyphtext, true);
cairo_stroke(_cr);
}
}
cairo_restore(_cr);
- if (font_face)
- cairo_font_face_destroy(font_face);
+// if (font_face)
+// cairo_font_face_destroy(font_face);
return true;
}
@@ -1638,4 +1701,4 @@ _write_callback(void *closure, const unsigned char *data, unsigned int length)
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :