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diff --git a/src/extension/internal/cairo-render-context.cpp b/src/extension/internal/cairo-render-context.cpp
index f308ce15753de2441e9e32106e5b085c3bd6332f..c33beab8a14870c53424c92be46d76a66568a08f 100644 (file)
_stream(NULL),
_is_valid(FALSE),
_vector_based_target(FALSE),
- _cr(NULL),
+ _cr(NULL), // Cairo context
_surface(NULL),
_target(CAIRO_SURFACE_TYPE_IMAGE),
_target_format(CAIRO_FORMAT_ARGB32),
_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;
CairoRenderContext::setClipMode(CairoClipMode mode)
{
switch (mode) {
- case CLIP_MODE_PATH:
- case CLIP_MODE_MASK:
+ case CLIP_MODE_PATH: // Clip is rendered as a path for vector output
+ case CLIP_MODE_MASK: // Clip is rendered as a bitmap for raster output.
_clip_mode = mode;
break;
default:
g_assert( _is_valid );
float opacity = _state->opacity;
- TRACE(("--popLayer w/ %f\n", opacity));
+ TRACE(("--popLayer w/ opacity %f\n", opacity));
+
+ /*
+ At this point, the Cairo source is ready. A Cairo mask must be created if required.
+ Care must be taken of transformatons as Cairo, like PS and PDF, treats clip paths and
+ masks independently of the objects they effect while in SVG the clip paths and masks
+ are defined relative to the objects they are attached to.
+ Notes:
+ 1. An SVG object may have both a clip path and a mask!
+ 2. An SVG clip path can be composed of an object with a clip path. This is not handled properly.
+ 3. An SVG clipped or masked object may be first drawn off the page and then translated onto
+ the page (document). This is also not handled properly.
+ 4. The code converts all SVG masks to bitmaps. This shouldn't be necessary.
+ 5. Cairo expects a mask to use only the alpha channel. SVG masks combine the RGB luminance with
+ alpha. This is handled here by doing a pixel by pixel conversion.
+ */
- // apply clipPath or mask if present
SPClipPath *clip_path = _state->clip_path;
SPMask *mask = _state->mask;
if (clip_path || mask) {
CairoRenderContext *clip_ctx = 0;
cairo_surface_t *clip_mask = 0;
+ // Apply any clip path first
if (clip_path) {
+ TRACE((" Applying clip\n"));
if (_render_mode == RENDER_MODE_CLIP)
mask = NULL; // disable mask when performing nested clipping
if (_vector_based_target) {
- setClipMode(CLIP_MODE_PATH);
+ setClipMode(CLIP_MODE_PATH); // Vector
if (!mask) {
cairo_pop_group_to_source(_cr);
- _renderer->applyClipPath(this, clip_path);
+ _renderer->applyClipPath(this, clip_path); // Uses cairo_clip()
if (opacity == 1.0)
cairo_paint(_cr);
else
// setup a new rendering context
clip_ctx = _renderer->createContext();
clip_ctx->setImageTarget(CAIRO_FORMAT_A8);
- clip_ctx->setClipMode(CLIP_MODE_MASK);
+ clip_ctx->setClipMode(CLIP_MODE_MASK); // Raster
+ // This code ties the clipping to the document coordinates. It doesn't allow
+ // for a clipped object intially drawn off the page and then translated onto
+ // the page.
if (!clip_ctx->setupSurface(_width, _height)) {
TRACE(("clip: setupSurface failed\n"));
_renderer->destroyContext(clip_ctx);
cairo_paint(clip_ctx->_cr);
cairo_restore(clip_ctx->_cr);
- // if a mask won't be applied set opacity too
+ // If a mask won't be applied set opacity too. (The clip is represented by a solid Cairo mask.)
if (!mask)
cairo_set_source_rgba(clip_ctx->_cr, 1.0, 1.0, 1.0, opacity);
else
// 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
}
}
+ // Apply any mask second
if (mask) {
+ TRACE((" Applying mask\n"));
// create rendering context for mask
CairoRenderContext *mask_ctx = _renderer->createContext();
_renderer->destroyContext(mask_ctx);
}
} else {
+ // No clip path or mask
cairo_pop_group_to_source(_cr);
if (opacity == 1.0)
cairo_paint(_cr);
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_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;
}
+#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
break;
}
- return _finishSurfaceSetup (surface);
+ return _finishSurfaceSetup (surface, &ctm);
}
bool
-CairoRenderContext::setSurfaceTarget(cairo_surface_t *surface, bool is_vector)
+CairoRenderContext::setSurfaceTarget(cairo_surface_t *surface, bool is_vector, cairo_matrix_t *ctm)
{
if (_is_valid || !surface)
return false;
_vector_based_target = is_vector;
- bool ret = _finishSurfaceSetup (surface);
+ bool ret = _finishSurfaceSetup (surface, ctm);
if (ret)
cairo_surface_reference (surface);
return ret;
}
bool
-CairoRenderContext::_finishSurfaceSetup(cairo_surface_t *surface)
+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;
if (_vector_based_target) {
@@ -981,7 +1028,7 @@ 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.
@@ -1167,7 +1214,8 @@ CairoRenderContext::_createPatternForPaintServer(SPPaintServer const *const pain
void
CairoRenderContext::_setFillStyle(SPStyle const *const style, NRRect const *pbox)
{
- g_return_if_fail( style->fill.isColor()
+ g_return_if_fail( !style->fill.set
+ || style->fill.isColor()
|| style->fill.isPaintserver() );
float alpha = SP_SCALE24_TO_FLOAT(style->fill_opacity.value);
@@ -1181,6 +1229,10 @@ CairoRenderContext::_setFillStyle(SPStyle const *const style, NRRect const *pbox
sp_color_get_rgb_floatv(&style->fill.value.color, rgb);
cairo_set_source_rgba(_cr, rgb[0], rgb[1], rgb[2], alpha);
+
+ } else if (!style->fill.set) { // unset fill is black
+ cairo_set_source_rgba(_cr, 0, 0, 0, alpha);
+
} else {
g_assert( style->fill.isPaintserver()
|| SP_IS_GRADIENT(SP_STYLE_FILL_SERVER(style))
@@ -1283,7 +1335,11 @@ CairoRenderContext::renderPathVector(Geom::PathVector const & pathv, SPStyle con
return true;
}
- if (style->fill.isNone() && style->stroke.isNone())
+ bool no_fill = style->fill.isNone() || style->fill_opacity.value == 0;
+ bool no_stroke = style->stroke.isNone() || style->stroke_width.computed < 1e-9 ||
+ style->stroke_opacity.value == 0;
+
+ if (no_fill && no_stroke)
return true;
bool need_layer = ( !_state->merge_opacity && !_state->need_layer &&
@@ -1294,7 +1350,7 @@ CairoRenderContext::renderPathVector(Geom::PathVector const & pathv, SPStyle con
else
pushLayer();
- if (!style->fill.isNone()) {
+ if (!no_fill) {
_setFillStyle(style, pbox);
setPathVector(pathv);
@@ -1304,15 +1360,15 @@ CairoRenderContext::renderPathVector(Geom::PathVector const & pathv, SPStyle con
cairo_set_fill_rule(_cr, CAIRO_FILL_RULE_WINDING);
}
- if (style->stroke.isNone())
+ if (no_stroke)
cairo_fill(_cr);
else
cairo_fill_preserve(_cr);
}
- if (!style->stroke.isNone()) {
+ if (!no_stroke) {
_setStrokeStyle(style, pbox);
- if (style->fill.isNone())
+ if (no_fill)
setPathVector(pathv);
cairo_stroke(_cr);
@@ -1407,7 +1463,7 @@ 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;
@@ -1431,10 +1487,11 @@ CairoRenderContext::_showGlyphs(cairo_t *cr, PangoFont *font, std::vector<CairoG
i++;
}
- if (is_stroke || _is_texttopath)
+ if (path) {
cairo_glyph_path(cr, glyphs, num_glyphs - num_invalid_glyphs);
- else
+ } else {
cairo_show_glyphs(cr, glyphs, num_glyphs - num_invalid_glyphs);
+ }
if (num_glyphs > GLYPH_ARRAY_SIZE)
g_free(glyphs);
@@ -1448,10 +1505,11 @@ 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);
@@ -1460,17 +1518,23 @@ 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);
@@ -1495,28 +1559,36 @@ 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;
}