diff options
Diffstat (limited to 'subpixel.patch')
-rw-r--r-- | subpixel.patch | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/subpixel.patch b/subpixel.patch new file mode 100644 index 000000000000..9a4627e451b6 --- /dev/null +++ b/subpixel.patch @@ -0,0 +1,227 @@ +diff --git a/glib/demo/render.c b/glib/demo/render.c +index 78d24bb..b05d8bf 100644 +--- a/glib/demo/render.c ++++ b/glib/demo/render.c +@@ -82,12 +82,14 @@ pgd_render_start (GtkButton *button, + PgdRenderDemo *demo) + { + PopplerPage *page; ++ gboolean subpixel_rendering; + gdouble page_width, page_height; + gdouble width, height; + gint x, y; + gchar *str; + GTimer *timer; + cairo_t *cr; ++ cairo_font_options_t *fo; + + page = poppler_document_get_page (demo->doc, demo->page); + if (!page) +@@ -116,6 +118,22 @@ pgd_render_start (GtkButton *button, + width, height); + cr = cairo_create (demo->surface); + ++ fo = cairo_font_options_create (); ++ cairo_get_font_options (cr, fo); ++ cairo_font_options_set_hint_style (fo, CAIRO_HINT_STYLE_SLIGHT); ++ ++ subpixel_rendering = poppler_page_support_subpixel_rendering (page); ++ if (subpixel_rendering) { ++ cairo_set_source_rgb (cr, 1., 1., 1.); ++ cairo_paint (cr); ++ ++ cairo_font_options_set_antialias (fo, CAIRO_ANTIALIAS_SUBPIXEL); ++ cairo_font_options_set_subpixel_order (fo, CAIRO_SUBPIXEL_ORDER_RGB); ++ } ++ ++ cairo_set_font_options (cr, fo); ++ cairo_font_options_destroy (fo); ++ + cairo_save (cr); + switch (demo->rotate) { + case 90: +@@ -143,9 +161,11 @@ pgd_render_start (GtkButton *button, + poppler_page_render (page, cr); + cairo_restore (cr); + +- cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER); +- cairo_set_source_rgb (cr, 1., 1., 1.); +- cairo_paint (cr); ++ if (!subpixel_rendering) { ++ cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER); ++ cairo_set_source_rgb (cr, 1., 1., 1.); ++ cairo_paint (cr); ++ } + + g_timer_stop (timer); + +diff --git a/glib/poppler-page.cc b/glib/poppler-page.cc +index 3d63bfd..3dc5585 100644 +--- a/glib/poppler-page.cc ++++ b/glib/poppler-page.cc +@@ -2424,3 +2424,13 @@ poppler_page_get_text_attributes_for_area (PopplerPage *page, + + return g_list_reverse(attributes); + } ++ ++gboolean ++poppler_page_support_subpixel_rendering (PopplerPage *page) ++{ ++ CairoOutputDev *output_dev; ++ g_return_val_if_fail (POPPLER_IS_PAGE (page), FALSE); ++ ++ output_dev = page->document->output_dev; ++ return page->page->supportSubpixelRendering(output_dev); ++} +diff --git a/glib/poppler-page.h b/glib/poppler-page.h +index fdbfd38..0f02a3a 100644 +--- a/glib/poppler-page.h ++++ b/glib/poppler-page.h +@@ -109,6 +109,7 @@ GList *poppler_page_get_text_attributes (PopplerPage *pa + void poppler_page_free_text_attributes (GList *list); + GList * poppler_page_get_text_attributes_for_area (PopplerPage *page, + PopplerRectangle *area); ++gboolean poppler_page_support_subpixel_rendering (PopplerPage *page); + + /* A rectangle on a page, with coordinates in PDF points. */ + #define POPPLER_TYPE_RECTANGLE (poppler_rectangle_get_type ()) +diff --git a/poppler/CairoFontEngine.cc b/poppler/CairoFontEngine.cc +index 1d611b5..f4ffb08 100644 +--- a/poppler/CairoFontEngine.cc ++++ b/poppler/CairoFontEngine.cc +@@ -189,7 +189,6 @@ _ft_new_face_uncached (FT_Library lib, + } + + font_face = cairo_ft_font_face_create_for_ft_face (face, +- FT_LOAD_NO_HINTING | + FT_LOAD_NO_BITMAP); + if (cairo_font_face_set_user_data (font_face, + &_ft_cairo_key, +@@ -358,7 +357,6 @@ _ft_new_face (FT_Library lib, + _ft_open_faces = l; + + l->font_face = cairo_ft_font_face_create_for_ft_face (tmpl.face, +- FT_LOAD_NO_HINTING | + FT_LOAD_NO_BITMAP); + if (cairo_font_face_set_user_data (l->font_face, + &_ft_cairo_key, +diff --git a/poppler/Gfx.cc b/poppler/Gfx.cc +index 577c482..be2f11a 100644 +--- a/poppler/Gfx.cc ++++ b/poppler/Gfx.cc +@@ -4684,6 +4684,62 @@ void Gfx::doImage(Object *ref, Stream *str, GBool inlineImg) { + error(errSyntaxError, getPos(), "Bad image parameters"); + } + ++GBool Gfx::checkNormalBlendModeOnly(Object *str) { ++ printf("check blender mode start\n"); ++ char *cmd; ++ Object obj; ++ Object args[maxArgs]; ++ int numArgs, i; ++ GBool onlyNormalBlendMode; ++ Parser myParser(xref, new Lexer(xref, str), gFalse); ++ ++ numArgs = 0; ++ onlyNormalBlendMode = gTrue; ++ ++ myParser.getObj(&obj); ++ while (!obj.isEOF()) { ++ if (obj.isCmd()) { ++ cmd = obj.getCmd(); ++ ++ if (strcmp(cmd, "gs") == 0) { ++ Object obj1, obj2; ++ GfxBlendMode mode; ++ if (res->lookupGState(args[0].getName(), &obj1)) { ++ if (!obj1.dictLookup("BM", &obj2)->isNull()) { ++ if (state->parseBlendMode(&obj2, &mode)) { ++ printf("check blend mode: %d\n", mode); ++ onlyNormalBlendMode &= (mode == gfxBlendNormal); ++ } ++ } ++ obj2.free(); ++ } ++ obj1.free(); ++ } ++ obj.free(); ++ ++ for (i = 0; i < numArgs; ++i) ++ args[i].free(); ++ numArgs = 0; ++ ++ } else if (numArgs < maxArgs) { ++ args[numArgs++] = obj; ++ } else { ++ obj.free(); ++ } ++ ++ myParser.getObj(&obj); ++ } ++ obj.free(); ++ ++ if (numArgs > 0) { ++ for (i = 0; i < numArgs; ++i) ++ args[i].free(); ++ } ++ ++ return onlyNormalBlendMode; ++} ++ ++ + GBool Gfx::checkTransparencyGroup(Dict *resDict) { + // check the effect of compositing objects as a group: + // look for ExtGState entries with ca != 1 or CA != 1 or BM != normal +diff --git a/poppler/Gfx.h b/poppler/Gfx.h +index a82f9f4..6a7e2c7 100644 +--- a/poppler/Gfx.h ++++ b/poppler/Gfx.h +@@ -186,6 +186,9 @@ public: + // Get the current graphics state object. + GfxState *getState() { return state; } + ++ // Check whether a stream only contains normal blend mode (to enable subpixel rendering) ++ GBool checkNormalBlendModeOnly(Object *str); ++ + GBool checkTransparencyGroup(Dict *resDict); + + void drawForm(Object *str, Dict *resDict, double *matrix, double *bbox, +diff --git a/poppler/Page.cc b/poppler/Page.cc +index a4af340..bcb51e0 100644 +--- a/poppler/Page.cc ++++ b/poppler/Page.cc +@@ -370,6 +370,20 @@ Dict *Page::getResourceDictCopy(XRef *xrefA) { + return dict ? dict->copy(xrefA) : NULL; + } + ++GBool Page::supportSubpixelRendering(OutputDev *out) { ++ GBool supported = gFalse; ++ Object obj; ++ PDFRectangle box; ++ ++ contents.fetch(xref, &obj); ++ if (!obj.isNull()) { ++ Gfx gfx(doc, out, attrs->getResourceDict(), &box, NULL); ++ supported = gfx.checkNormalBlendModeOnly(&obj); ++ } ++ obj.free(); ++ return supported; ++} ++ + void Page::replaceXRef(XRef *xrefA) { + Object obj1; + Dict *pageDict = pageObj.getDict()->copy(xrefA); +diff --git a/poppler/Page.h b/poppler/Page.h +index 2aaabae..a49d34f 100644 +--- a/poppler/Page.h ++++ b/poppler/Page.h +@@ -179,6 +179,9 @@ public: + Dict *getResourceDict(); + Dict *getResourceDictCopy(XRef *xrefA); + ++ // Whether the content in this page supports subpixel rendering (lcdfilter) ++ GBool supportSubpixelRendering(OutputDev *out); ++ + // Get annotations array. + Object *getAnnots(Object *obj, XRef *xrefA = NULL) { return annotsObj.fetch((xrefA == NULL) ? xref : xrefA, obj); } + // Add a new annotation to the page |