diff options
Diffstat (limited to 'Runtime/GUI/Font.cpp')
| -rw-r--r-- | Runtime/GUI/Font.cpp | 65 |
1 files changed, 51 insertions, 14 deletions
diff --git a/Runtime/GUI/Font.cpp b/Runtime/GUI/Font.cpp index 614792a..d669844 100644 --- a/Runtime/GUI/Font.cpp +++ b/Runtime/GUI/Font.cpp @@ -15,6 +15,9 @@ using namespace character; static std::string s_FontError; +static std::vector<unsigned char> s_PixelBuffer; +static int s_SizePerPixel = sizeof(unsigned char); + Font::Font(std::string path, TextGeneratingSettings settings) : LuaBind::NativeClass<Font>() { @@ -109,8 +112,14 @@ const Character* Font::GetCharacter(character::Codepoint codepoint, int pixelSiz auto iter = m_Characters.find(hash); if (iter == m_Characters.end()) { - RenderCharacter(codepoint, pixelSize); - iter = m_Characters.find(hash); + if (RenderCharacter(codepoint, pixelSize)) + { + iter = m_Characters.find(hash); + } + else + { + return NULL; + } } Assert(iter != m_Characters.end()); return &iter->second; @@ -133,21 +142,48 @@ void Font::RenderCharacters(std::vector<character::Codepoint>& codepoint, int pi } } -void Font::RenderCharacter(character::Codepoint codepoint, int pixelSize) +bool Font::RenderCharacter(character::Codepoint codepoint, int pixelSize) { character::Hash hash = GetHash(codepoint, pixelSize); if (m_Characters.count(hash) != 0) - return; + return true; FT_Set_Pixel_Sizes(m_FTFace, 0, pixelSize); - if (FT_Load_Char(m_FTFace, codepoint, FT_LOAD_RENDER)) - { - return; - } + + // bug: 发现有时候渲染的结果是FT_PIXEL_MODE_MONO（1-bits)，试过不同的flags组合还是不对，最后手动转换为8-bits + + //FT_Int32 flags = FT_LOAD_TARGET_NORMAL | FT_LOAD_FORCE_AUTOHINT;
+ FT_Int32 flags = FT_LOAD_RENDER;
+ if (FT_Load_Char(m_FTFace, codepoint, flags)) + return false; int w = m_FTFace->glyph->bitmap.width; int h = m_FTFace->glyph->bitmap.rows; - TextHelper::print_glyph(m_FTFace->glyph->bitmap.buffer, w, h); + const unsigned char* pixels = m_FTFace->glyph->bitmap.buffer; + if (pixels == NULL) + return false; + + s_PixelBuffer.resize(w * h); + if (m_FTFace->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_MONO) + { + // 1 bit monochrome
+ int pitch = m_FTFace->glyph->bitmap.pitch;
+ for (int y = 0; y < h; ++y)
+ {
+ for (int x = 0; x < w; ++x)
+ {
+ int index = x + y * w;
+ s_PixelBuffer[index] = ((pixels[pitch * y + x / 8]) & (1 << (7 - x % 8))) ? 255 : 0;
+ }
+ }
+ } + else if (m_FTFace->glyph->bitmap.pixel_mode) + { + // 8 bit grayscale
+ memcpy(&s_PixelBuffer[0], pixels, s_SizePerPixel * w * h); + } + + //TextHelper::print_glyph(&s_PixelBuffer[0], w, h); GlyphAtals* atlas = RequestAtlas(pixelSize, Internal::Vector2(w, h)); Assert(atlas); @@ -156,15 +192,17 @@ void Font::RenderCharacter(character::Codepoint codepoint, int pixelSize) try { - atlas->altas->UpdateSubImage(rect, EPixelFormat::PixelFormat_R, EPixelElementType::PixelType_UNSIGNED_BYTE, m_FTFace->glyph->bitmap.buffer); + atlas->altas->UpdateSubImage(rect, EPixelFormat::PixelFormat_R, EPixelElementType::PixelType_UNSIGNED_BYTE, &s_PixelBuffer[0]); } catch (TextureException& e) { + s_PixelBuffer.clear(); std::string error = e.what(); error = "Render Character Error: " + error; log_error(e.what()); - return; + return false; } + s_PixelBuffer.clear(); Character character; character.atlas = atlas->index; @@ -173,9 +211,8 @@ void Font::RenderCharacter(character::Codepoint codepoint, int pixelSize) character.advance = m_FTFace->glyph->advance.x * 1/64.f; m_Characters.insert(std::pair<character::Hash, Character>(hash, character)); -/* - FT_Done_Face(m_FTFace); - FT_Done_FreeType(m_FTLibrary);*/ + + return true; } const GlyphAtals* Font::GetGlyphAtlas(int index) |