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subpixel antialiasing in freetype fonts

This commit is contained in:
Vadim Lopatin 2015-01-24 22:10:08 +03:00
parent d66f79c019
commit b15478b8e5
4 changed files with 26 additions and 12 deletions
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4
dlanguilib.visualdproj
View File

@ -66,7 +66,7 @@
<debuglevel>0</debuglevel>
<debugids>DebugFocus</debugids>
<versionlevel>0</versionlevel>
<versionids>EmbedStandardResources Unicode</versionids>
<versionids>EmbedStandardResources Unicode USE_FREETYPE</versionids>
<dump_source>0</dump_source>
<mapverbosity>0</mapverbosity>
<createImplib>1</createImplib>
@ -89,6 +89,7 @@
<resfile />
<exefile>$(OutDir)\$(ProjectName).lib</exefile>
<useStdLibPath>1</useStdLibPath>
<cRuntime>2</cRuntime>
<additionalOptions />
<preBuildCommand />
<postBuildCommand />
@ -183,6 +184,7 @@
<resfile />
<exefile>$(OutDir)\$(ProjectName).lib</exefile>
<useStdLibPath>1</useStdLibPath>
<cRuntime>1</cRuntime>
<additionalOptions />
<preBuildCommand />
<postBuildCommand />

4
examples/example1/example1.visualdproj
View File

@ -66,7 +66,7 @@
<debuglevel>0</debuglevel>
<debugids />
<versionlevel>0</versionlevel>
<versionids>Unicode</versionids>
<versionids>Unicode USE_FREETYPE</versionids>
<dump_source>0</dump_source>
<mapverbosity>3</mapverbosity>
<createImplib>0</createImplib>
@ -89,6 +89,7 @@
<resfile />
<exefile>$(OutDir)\$(ProjectName).exe</exefile>
<useStdLibPath>1</useStdLibPath>
<cRuntime>2</cRuntime>
<additionalOptions>-profile</additionalOptions>
<preBuildCommand />
<postBuildCommand />
@ -183,6 +184,7 @@
<resfile />
<exefile>$(OutDir)\$(ProjectName).exe</exefile>
<useStdLibPath>1</useStdLibPath>
<cRuntime>1</cRuntime>
<additionalOptions />
<preBuildCommand />
<postBuildCommand />

9
examples/example1/src/example1.d
View File

@ -206,8 +206,13 @@ extern (C) int UIAppMain(string[] args) {
// you can override antialiasing setting here (0 means antialiasing always on, some big value = always off)
// fonts with size less than specified value will not be antialiased
FontManager.minAnitialiasedFontSize = 0; // 0 means always antialiased
// you can turn on subpixel font rendering (ClearType) here
FontManager.subpixelRenderingMode = SubpixelRenderingMode.None;// SubpixelRenderingMode.BGR;
version (USE_OPENGL) {
// you can turn on subpixel font rendering (ClearType) here
FontManager.subpixelRenderingMode = SubpixelRenderingMode.None; //
} else {
// you can turn on subpixel font rendering (ClearType) here
FontManager.subpixelRenderingMode = SubpixelRenderingMode.BGR; //SubpixelRenderingMode.None; //
}
// create window
Window window = Platform.instance.createWindow("My Window", null);

21
src/dlangui/graphics/ftfonts.d
View File

@ -246,8 +246,9 @@ private class FreeTypeFontFile {
//FONT_GUARD
int glyph_index = getCharIndex(code, def_char);
int flags = FT_LOAD_DEFAULT;
const bool _drawMonochrome = _size < FontManager.instance.minAnitialiasedFontSize;
flags |= (!_drawMonochrome ? FT_LOAD_TARGET_NORMAL : FT_LOAD_TARGET_MONO);
const bool _drawMonochrome = _size < FontManager.minAnitialiasedFontSize;
SubpixelRenderingMode subpixel = _drawMonochrome ? SubpixelRenderingMode.None : FontManager.subpixelRenderingMode;
flags |= (!_drawMonochrome ? (subpixel ? FT_LOAD_TARGET_LCD : FT_LOAD_TARGET_NORMAL) : FT_LOAD_TARGET_MONO);
if (withImage)
flags |= FT_LOAD_RENDER;
if (FontManager.instance.hintingMode == HintingMode.AutoHint)
@ -261,17 +262,17 @@ private class FreeTypeFontFile {
if ( error )
return false;
glyph.lastUsage = 1;
glyph.blackBoxX = cast(ubyte)(_slot.metrics.width >> 6);
glyph.blackBoxX = cast(ushort)(_slot.metrics.width >> 6);
glyph.blackBoxY = cast(ubyte)(_slot.metrics.height >> 6);
glyph.originX = cast(byte)(_slot.metrics.horiBearingX >> 6);
glyph.originY = cast(byte)(_slot.metrics.horiBearingY >> 6);
glyph.width = cast(ubyte)(myabs(cast(int)(_slot.metrics.horiAdvance)) >> 6);
glyph.subpixelMode = SubpixelRenderingMode.None;
glyph.subpixelMode = subpixel;
//glyph.glyphIndex = cast(ushort)code;
if (withImage) {
FT_Bitmap* bitmap = &_slot.bitmap;
ubyte w = cast(ubyte)(bitmap.width);
ubyte h = cast(ubyte)(bitmap.rows);
ushort w = cast(ushort)(bitmap.width);
ubyte h = cast(ubyte)(bitmap.rows);
glyph.blackBoxX = w;
glyph.blackBoxY = h;
int sz = w * cast(int)h;
@ -298,8 +299,11 @@ private class FreeTypeFontFile {
} else {
// antialiased
for (int i = 0; i < sz; i++)
glyph.glyph[i] = bitmap.buffer[i];
for (uint y = 0; y < h; y++) {
for (uint x = 0; x < w; x++) {
glyph.glyph[y * w + x] = bitmap.buffer[y * bitmap.pitch + x];
}
}
}
}
version (USE_OPENGL) {
@ -491,6 +495,7 @@ class FreeTypeFontManager : FontManager {
Log.e("Cannot init freetype library, error=", error);
throw new Exception("Cannot init freetype library");
}
FT_Library_SetLcdFilter(_library, FT_LCD_FILTER_DEFAULT);
}
~this() {
debug Log.d("FreeTypeFontManager ~this()");