diff options
author | Paul Gideon Dann | 2016-12-13 12:04:59 +0000 |
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committer | Paul Gideon Dann | 2016-12-13 12:04:59 +0000 |
commit | c4e5e4f1918ef5177663088e76ac36a68fbdd01f (patch) | |
tree | ceb88a410018263775a97f8c47e4f319f412441e /0003-Apply-subpixel-rendering-in-Cairo-Backend.patch | |
parent | 3186fca13a3f64f7c0e8e89ba9be51cc8c52cbc2 (diff) | |
download | aur-c4e5e4f1918ef5177663088e76ac36a68fbdd01f.tar.gz |
Update for poppler-0.49
Diffstat (limited to '0003-Apply-subpixel-rendering-in-Cairo-Backend.patch')
-rw-r--r-- | 0003-Apply-subpixel-rendering-in-Cairo-Backend.patch | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/0003-Apply-subpixel-rendering-in-Cairo-Backend.patch b/0003-Apply-subpixel-rendering-in-Cairo-Backend.patch new file mode 100644 index 000000000000..aa6327c682fa --- /dev/null +++ b/0003-Apply-subpixel-rendering-in-Cairo-Backend.patch @@ -0,0 +1,315 @@ +From 30f21dbfbd957d7b2b133504bd76b022179ae783 Mon Sep 17 00:00:00 2001 +From: Paul Gideon Dann <pdgiddie@gmail.com> +Date: Tue, 9 Aug 2016 15:02:53 +0100 +Subject: [PATCH 3/4] Apply subpixel rendering in Cairo Backend + +Source: +https://github.com/zhou13/poppler-subpixel/blob/master/poppler/poppler-subpixel.patch +--- + glib/demo/render.c | 25 ++++++++++++++++++--- + glib/poppler-page.cc | 10 +++++++++ + glib/poppler-page.h | 1 + + poppler/CairoFontEngine.cc | 6 ++--- + poppler/CairoOutputDev.cc | 24 ++++++++++++++++++++ + poppler/Gfx.cc | 56 ++++++++++++++++++++++++++++++++++++++++++++++ + poppler/Gfx.h | 3 +++ + poppler/Page.cc | 14 ++++++++++++ + poppler/Page.h | 3 +++ + 9 files changed, 136 insertions(+), 6 deletions(-) + +diff --git a/glib/demo/render.c b/glib/demo/render.c +index 78d24bb..d482ceb 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 +118,21 @@ pgd_render_start (GtkButton *button, + width, height); + cr = cairo_create (demo->surface); + ++ fo = cairo_font_options_create (); ++ cairo_get_font_options (cr, fo); ++ ++ subpixel_rendering = poppler_page_support_subpixel_rendering (page); ++ printf("subpixel_rendering %d\n", subpixel_rendering); ++ 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 +160,11 @@ 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 6676f89..3c8fe81 100644 +--- a/poppler/CairoFontEngine.cc ++++ b/poppler/CairoFontEngine.cc +@@ -132,7 +132,7 @@ CairoFont::getSubstitutionCorrection(GfxFont *gfxFont) + cairo_matrix_t m; + cairo_matrix_init_identity(&m); + cairo_font_options_t *options = cairo_font_options_create(); +- cairo_font_options_set_hint_style(options, CAIRO_HINT_STYLE_NONE); ++ cairo_font_options_set_hint_style(options, CAIRO_HINT_STYLE_SLIGHT); + cairo_font_options_set_hint_metrics(options, CAIRO_HINT_METRICS_OFF); + cairo_scaled_font_t *scaled_font = cairo_scaled_font_create(cairo_font_face, &m, &m, options); + +@@ -190,7 +190,7 @@ _ft_new_face_uncached (FT_Library lib, + } + + font_face = cairo_ft_font_face_create_for_ft_face (face, +- FT_LOAD_NO_HINTING | ++ FT_LOAD_TARGET_LIGHT | + FT_LOAD_NO_BITMAP); + if (cairo_font_face_set_user_data (font_face, + &_ft_cairo_key, +@@ -359,7 +359,7 @@ _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_TARGET_LIGHT | + FT_LOAD_NO_BITMAP); + if (cairo_font_face_set_user_data (l->font_face, + &_ft_cairo_key, +diff --git a/poppler/CairoOutputDev.cc b/poppler/CairoOutputDev.cc +index bd18cde..a24ca38 100644 +--- a/poppler/CairoOutputDev.cc ++++ b/poppler/CairoOutputDev.cc +@@ -203,6 +203,13 @@ void CairoOutputDev::setCairo(cairo_t *cairo) + } + if (cairo != NULL) { + this->cairo = cairo_reference (cairo); ++ { ++ cairo_font_options_t *options = cairo_font_options_create (); ++ cairo_get_font_options (cairo, options); ++ cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_SUBPIXEL); ++ cairo_set_font_options (cairo, options); ++ cairo_font_options_destroy (options); ++ } + /* save the initial matrix so that we can use it for type3 fonts. */ + //XXX: is this sufficient? could we miss changes to the matrix somehow? + cairo_get_matrix(cairo, &orig_matrix); +@@ -1430,6 +1437,7 @@ void CairoOutputDev::drawChar(GfxState *state, double x, double y, + void CairoOutputDev::endString(GfxState *state) + { + int render; ++ GfxFontType fontType; + + if (!currentFont) + return; +@@ -1447,6 +1455,18 @@ void CairoOutputDev::endString(GfxState *state) + goto finish; + } + ++ fontType = state->getFont()->getType(); ++ // Do not enable subpixel rendering for type3 font ++ // For some reason it does not work ++ if (fontType == fontType3) { ++ cairo_save(cairo); ++ cairo_font_options_t *fo; ++ fo = cairo_font_options_create (); ++ cairo_get_font_options (cairo, fo); ++ cairo_font_options_set_antialias (fo, CAIRO_ANTIALIAS_DEFAULT); ++ cairo_set_font_options (cairo, fo); ++ } ++ + if (!(render & 1)) { + LOG (printf ("fill string\n")); + cairo_set_source (cairo, fill_pattern); +@@ -1497,6 +1517,10 @@ void CairoOutputDev::endString(GfxState *state) + } + + finish: ++ // pair with the previous cairo_save to disable subpixel rendering for type3 fonts ++ if (fontType == fontType3) { ++ cairo_restore(cairo); ++ } + gfree (glyphs); + glyphs = NULL; + if (use_show_text_glyphs) { +diff --git a/poppler/Gfx.cc b/poppler/Gfx.cc +index a8f5be9..0ca1940 100644 +--- a/poppler/Gfx.cc ++++ b/poppler/Gfx.cc +@@ -4728,6 +4728,62 @@ 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 dca52e4..3f63342 100644 +--- a/poppler/Page.cc ++++ b/poppler/Page.cc +@@ -372,6 +372,20 @@ 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 +-- +2.10.2 + |