File java10-improved-fonts.patch of Package java-10-openjdk
--- jdk10/make/lib/Awt2dLibraries.gmk 2017-11-22 13:37:53.000000000 +0100
+++ jdk10/make/lib/Awt2dLibraries.gmk 2017-12-01 16:30:17.834138061 +0100
@@ -689,7 +689,7 @@
LDFLAGS_macosx := -undefined dynamic_lookup, \
LIBS := $(BUILD_LIBFONTMANAGER_FONTLIB), \
LIBS_unix := -lawt -ljava -ljvm $(LIBM) $(LIBCXX), \
- LIBS_linux := -lc, \
+ LIBS_linux := -lc -lfontconfig, \
LIBS_solaris := -lawt_headless -lc, \
LIBS_aix := -lawt_headless,\
LIBS_windows := $(WIN_JAVA_LIB) advapi32.lib user32.lib gdi32.lib \
--- jdk10/src/java.desktop/share/native/libfontmanager/freetypeScaler.c 2017-11-22 13:37:53.000000000 +0100
+++ jdk10/src/java.desktop/share/native/libfontmanager/freetypeScaler.c 2017-12-01 16:30:17.838138061 +0100
@@ -38,6 +38,10 @@
#include FT_SIZES_H
#include FT_OUTLINE_H
#include FT_SYNTHESIS_H
+#ifdef IMPROVED_FONT_RENDERING
+#include FT_LCD_FILTER_H
+#include <fontconfig/fontconfig.h>
+#endif
#include "fontscaler.h"
@@ -652,6 +656,162 @@
}
}
+#ifdef IMPROVED_FONT_RENDERING
+typedef struct {
+ FT_Render_Mode ftRenderMode;
+ int ftLoadFlags;
+ FT_LcdFilter ftLcdFilter;
+} RenderingProperties;
+
+static FcPattern* matchedPattern(const FcChar8* family, double ptSize) {
+ /*
+ we will create pattern to find our family and size in
+ fontconfig configuration, and then will return it's
+ properties:
+ */
+ FcPattern* fcPattern = 0;
+ fcPattern = FcPatternCreate();
+ FcValue fcValue;
+ fcValue.type = FcTypeString;
+ fcValue.u.s = family;
+ FcPatternAdd(fcPattern, FC_FAMILY, fcValue, FcTrue);
+ FcPatternAddBool(fcPattern, FC_SCALABLE, FcTrue);
+ FcPatternAddDouble(fcPattern, FC_SIZE, ptSize);
+ // TODO FcPatternAddInteger(pattern, FC_WEIGHT, weight_value);
+ // TODO FcPatternAddInteger(pattern, FC_SLANT, slant_value);
+ // TODO FcPatternAddDouble(pattern, FC_PIXEL_SIZE, size_value);
+ // TODO FcPatternAddInteger(pattern, FC_WIDTH, stretch); 100 in most cases
+ FcConfigSubstitute(0, fcPattern, FcMatchPattern);
+ FcConfigSubstitute(0, fcPattern, FcMatchFont);
+ FcDefaultSubstitute(fcPattern);
+ FcResult res;
+
+ FcPattern *pattern = 0;
+ pattern = FcFontMatch(0, fcPattern, &res);
+ FcPatternDestroy(fcPattern);
+ return pattern;
+}
+
+static void readFontconfig(const FcChar8* family, FTScalerContext *context, RenderingProperties* rp) {
+
+ FcPattern *pattern = matchedPattern(family, context->ptsz);
+
+ int ftLoadFalgs = FT_LOAD_DEFAULT;
+ FT_Render_Mode ftRenderMode;
+ FT_LcdFilter ftLcdFilter;
+ char horizontal = 1;
+ FcBool fcAntialias = false, fcBool;
+
+ // If the user has no antialias information set in their fontconfig directory
+ // and the font itself does not provide any hints either (which is common),
+ // Fontconfig may not return any antialias hint about the selected font since
+ // it does not set any default for this key internally.
+ // Use the antialias hint when it is available but only if antialiasing was
+ // actually requested by the caller.
+ // If antialiasing was requested but Fontconfig states to use no antialiasing,
+ // that takes precedence and also modifies the supplied context to account for
+ // the change (sets context->aaType to TEXT_AA_OFF as a side-effect in the render
+ // mode conditional block down below).
+ if (context->aaType != TEXT_AA_OFF) {
+ if (FcPatternGetBool(pattern, FC_ANTIALIAS, 0, &fcAntialias) != FcResultMatch)
+ fcAntialias = true;
+ }
+
+ // render mode:
+ if (fcAntialias) {
+ if (context->aaType == TEXT_AA_ON)
+ ftRenderMode = FT_RENDER_MODE_NORMAL;
+ else {
+ // subpixel order:
+ int subpixel = FC_RGBA_UNKNOWN;
+ FcPatternGetInteger(pattern, FC_RGBA, 0, &subpixel);
+ if (subpixel == FC_RGBA_UNKNOWN)
+ subpixel = FC_RGBA_NONE;
+ switch (subpixel) {
+ case FC_RGBA_NONE:
+ ftRenderMode = FT_RENDER_MODE_NORMAL;
+ break;
+ case FC_RGBA_RGB:
+ case FC_RGBA_BGR:
+ ftRenderMode = FT_RENDER_MODE_LCD;
+ horizontal = 1;
+ break;
+ case FC_RGBA_VRGB:
+ case FC_RGBA_VBGR:
+ ftRenderMode = FT_RENDER_MODE_LCD_V;
+ horizontal = 0;
+ break;
+ default:
+ break;
+ }
+ }
+ } else {
+ ftRenderMode = FT_RENDER_MODE_MONO;
+ context->aaType = TEXT_AA_OFF; // if this was forced through Fontconfig
+ }
+
+ // loading mode:
+ if (!fcAntialias)
+ ftLoadFalgs |= FT_LOAD_TARGET_MONO;
+ else {
+ int hint_style = FC_HINT_NONE;
+ FcPatternGetInteger(pattern, FC_HINT_STYLE, 0, &hint_style);
+ switch (hint_style) {
+ case FC_HINT_NONE:
+ ftLoadFalgs |= FT_LOAD_NO_HINTING;
+ break;
+ case FC_HINT_SLIGHT:
+ ftLoadFalgs |= FT_LOAD_TARGET_LIGHT;
+ break;
+ case FC_HINT_MEDIUM:
+ ftLoadFalgs |= FT_LOAD_TARGET_NORMAL;
+ break;
+ case FC_HINT_FULL:
+ if (fcAntialias)
+ ftLoadFalgs |= FT_LOAD_TARGET_NORMAL;
+ else
+ ftLoadFalgs |= horizontal ? FT_LOAD_TARGET_LCD : FT_LOAD_TARGET_LCD_V;
+ break;
+ default:
+ // what else to use as default?
+ ftLoadFalgs |= FT_LOAD_TARGET_NORMAL;
+ break;
+ }
+ }
+
+ // autohinting:
+ if (FcPatternGetBool(pattern, FC_AUTOHINT, 0, &fcBool) == FcResultMatch && fcBool)
+ ftLoadFalgs |= FT_LOAD_FORCE_AUTOHINT;
+
+ // LCD filter:
+ int filter = FC_LCD_DEFAULT;
+ FcPatternGetInteger(pattern, FC_LCD_FILTER, 0, &filter);
+ switch (filter) {
+ case FC_LCD_NONE:
+ ftLcdFilter = FT_LCD_FILTER_NONE;
+ break;
+ case FC_LCD_DEFAULT:
+ ftLcdFilter = FT_LCD_FILTER_DEFAULT;
+ break;
+ case FC_LCD_LIGHT:
+ ftLcdFilter = FT_LCD_FILTER_LIGHT;
+ break;
+ case FC_LCD_LEGACY:
+ ftLcdFilter = FT_LCD_FILTER_LEGACY;
+ break;
+ default:
+ // new unknown lcd filter type?! will use default one:
+ ftLcdFilter = FT_LCD_FILTER_DEFAULT;
+ break;
+ }
+
+ FcPatternDestroy(pattern);
+
+ rp->ftRenderMode = ftRenderMode;
+ rp->ftLoadFlags = ftLoadFalgs;
+ rp->ftLcdFilter = ftLcdFilter;
+}
+#endif
/*
* Class: sun_font_FreetypeFontScaler
@@ -667,7 +827,9 @@
UInt16 width, height;
GlyphInfo *glyphInfo;
int glyph_index;
+#ifndef IMPROVED_FONT_RENDERING
int renderFlags = FT_LOAD_RENDER, target;
+#endif
FT_GlyphSlot ftglyph;
FTScalerContext* context =
@@ -685,6 +847,11 @@
return ptr_to_jlong(getNullGlyphImage());
}
+#ifdef IMPROVED_FONT_RENDERING
+ RenderingProperties renderingProperties;
+ readFontconfig((const FcChar8 *) scalerInfo->face->family_name,
+ context, &renderingProperties);
+#else
/* if algorithmic styling is required then we do not request bitmap */
if (context->doBold || context->doItalize) {
renderFlags = FT_LOAD_DEFAULT;
@@ -707,10 +874,17 @@
target = FT_LOAD_TARGET_LCD_V;
}
renderFlags |= target;
+#endif
glyph_index = FT_Get_Char_Index(scalerInfo->face, glyphCode);
+#ifdef IMPROVED_FONT_RENDERING
+ FT_Library_SetLcdFilter(scalerInfo->library, renderingProperties.ftLcdFilter);
+ error = FT_Load_Glyph(scalerInfo->face, glyphCode, renderingProperties.ftLoadFlags);
+#else
error = FT_Load_Glyph(scalerInfo->face, glyphCode, renderFlags);
+#endif
+
if (error) {
//do not destroy scaler yet.
//this can be problem of particular context (e.g. with bad transform)
@@ -729,9 +903,13 @@
/* generate bitmap if it is not done yet
e.g. if algorithmic styling is performed and style was added to outline */
+#ifdef IMPROVED_FONT_RENDERING
+ FT_Render_Glyph(ftglyph, renderingProperties.ftRenderMode);
+#else
if (ftglyph->format == FT_GLYPH_FORMAT_OUTLINE) {
FT_Render_Glyph(ftglyph, FT_LOAD_TARGET_MODE(target));
}
+#endif
width = (UInt16) ftglyph->bitmap.width;
height = (UInt16) ftglyph->bitmap.rows;
@@ -945,7 +1123,9 @@
static FT_Outline* getFTOutline(JNIEnv* env, jobject font2D,
FTScalerContext *context, FTScalerInfo* scalerInfo,
jint glyphCode, jfloat xpos, jfloat ypos) {
+#ifndef IMPROVED_FONT_RENDERING
int renderFlags;
+#endif
int glyph_index;
FT_Error error;
FT_GlyphSlot ftglyph;
@@ -960,11 +1140,22 @@
return NULL;
}
+#ifdef IMPROVED_FONT_RENDERING
+ RenderingProperties renderingProperties;
+ readFontconfig((const FcChar8 *) scalerInfo->face->family_name,
+ context, &renderingProperties);
+#else
renderFlags = FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP;
+#endif
glyph_index = FT_Get_Char_Index(scalerInfo->face, glyphCode);
+#ifdef IMPROVED_FONT_RENDERING
+ error = FT_Load_Glyph(scalerInfo->face, glyphCode, renderingProperties.ftLoadFlags);
+#else
error = FT_Load_Glyph(scalerInfo->face, glyphCode, renderFlags);
+#endif
+
if (error) {
return NULL;
}
