mirror of
https://github.com/Maschell/libgui.git
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608 lines
19 KiB
C++
608 lines
19 KiB
C++
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/*
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* FreeTypeGX is a wrapper class for libFreeType which renders a compiled
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* FreeType parsable font so a GX texture for Wii homebrew development.
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* Copyright (C) 2008 Armin Tamzarian
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* Modified by Dimok, 2015 for WiiU GX2
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*
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* This file is part of FreeTypeGX.
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*
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* FreeTypeGX is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* FreeTypeGX is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with FreeTypeGX. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "FreeTypeGX.h"
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#include "video/CVideo.h"
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#include "video/shaders/Texture2DShader.h"
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using namespace std;
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#define ALIGN4(x) (((x) + 3) & ~3)
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/**
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* Default constructor for the FreeTypeGX class for WiiXplorer.
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*/
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FreeTypeGX::FreeTypeGX(const uint8_t* fontBuffer, FT_Long bufferSize, bool lastFace)
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{
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int32_t faceIndex = 0;
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ftPointSize = 0;
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GX2InitSampler(&ftSampler, GX2_TEX_CLAMP_CLAMP_BORDER, GX2_TEX_XY_FILTER_BILINEAR);
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FT_Init_FreeType(&ftLibrary);
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if(lastFace)
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{
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FT_New_Memory_Face(ftLibrary, (FT_Byte *)fontBuffer, bufferSize, -1, &ftFace);
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faceIndex = ftFace->num_faces - 1; // Use the last face
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FT_Done_Face(ftFace);
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ftFace = NULL;
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}
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FT_New_Memory_Face(ftLibrary, (FT_Byte *) fontBuffer, bufferSize, faceIndex, &ftFace);
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ftKerningEnabled = FT_HAS_KERNING(ftFace);
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}
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/**
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* Default destructor for the FreeTypeGX class.
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*/
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FreeTypeGX::~FreeTypeGX()
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{
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unloadFont();
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FT_Done_Face(ftFace);
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FT_Done_FreeType(ftLibrary);
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}
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/**
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* Convert a short char string to a wide char string.
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*
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* This routine converts a supplied short character string into a wide character string.
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* Note that it is the user's responsibility to clear the returned buffer once it is no longer needed.
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*
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* @param strChar Character string to be converted.
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* @return Wide character representation of supplied character string.
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*/
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wchar_t* FreeTypeGX::charToWideChar(const char* strChar)
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{
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if (!strChar) return NULL;
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wchar_t *strWChar = new (std::nothrow) wchar_t[strlen(strChar) + 1];
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if (!strWChar) return NULL;
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int32_t bt = mbstowcs(strWChar, strChar, strlen(strChar));
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if (bt > 0)
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{
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strWChar[bt] = 0;
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return strWChar;
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}
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wchar_t *tempDest = strWChar;
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while ((*tempDest++ = *strChar++))
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;
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return strWChar;
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}
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char *FreeTypeGX::wideCharToUTF8(const wchar_t* strChar)
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{
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if(!strChar) {
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return NULL;
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}
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size_t len = 0;
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wchar_t wc;
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for (size_t i = 0; strChar[i]; ++i)
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{
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wc = strChar[i];
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if (wc < 0x80)
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++len;
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else if (wc < 0x800)
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len += 2;
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else if (wc < 0x10000)
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len += 3;
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else
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len += 4;
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}
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char *pOut = new (std::nothrow) char[len];
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if(!pOut)
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return NULL;
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size_t n = 0;
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for (size_t i = 0; strChar[i]; ++i)
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{
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wc = strChar[i];
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if (wc < 0x80)
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pOut[n++] = (char)wc;
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else if (wc < 0x800)
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{
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pOut[n++] = (char)((wc >> 6) | 0xC0);
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pOut[n++] = (char)((wc & 0x3F) | 0x80);
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}
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else if (wc < 0x10000)
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{
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pOut[n++] = (char)((wc >> 12) | 0xE0);
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pOut[n++] = (char)(((wc >> 6) & 0x3F) | 0x80);
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pOut[n++] = (char)((wc & 0x3F) | 0x80);
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}
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else
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{
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pOut[n++] = (char)(((wc >> 18) & 0x07) | 0xF0);
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pOut[n++] = (char)(((wc >> 12) & 0x3F) | 0x80);
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pOut[n++] = (char)(((wc >> 6) & 0x3F) | 0x80);
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pOut[n++] = (char)((wc & 0x3F) | 0x80);
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}
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}
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return pOut;
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}
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/**
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* Clears all loaded font glyph data.
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*
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* This routine clears all members of the font map structure and frees all allocated memory back to the system.
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*/
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void FreeTypeGX::unloadFont()
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{
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map<int16_t, ftGX2Data >::iterator itr;
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map<wchar_t, ftgxCharData>::iterator itr2;
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for (itr = fontData.begin(); itr != fontData.end(); itr++)
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{
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for (itr2 = itr->second.ftgxCharMap.begin(); itr2 != itr->second.ftgxCharMap.end(); itr2++)
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{
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if(itr2->second.texture)
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{
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if(itr2->second.texture->surface.image_data)
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free(itr2->second.texture->surface.image_data);
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delete itr2->second.texture;
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itr2->second.texture = NULL;
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}
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}
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}
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fontData.clear();
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}
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/**
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* Caches the given font glyph in the instance font texture buffer.
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*
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* This routine renders and stores the requested glyph's bitmap and relevant information into its own quickly addressible
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* structure within an instance-specific map.
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*
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* @param charCode The requested glyph's character code.
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* @return A pointer to the allocated font structure.
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*/
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ftgxCharData * FreeTypeGX::cacheGlyphData(wchar_t charCode, int16_t pixelSize)
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{
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map<int16_t, ftGX2Data>::iterator itr = fontData.find(pixelSize);
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if (itr != fontData.end())
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{
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map<wchar_t, ftgxCharData>::iterator itr2 = itr->second.ftgxCharMap.find(charCode);
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if (itr2 != itr->second.ftgxCharMap.end())
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{
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return &itr2->second;
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}
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}
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//!Cache ascender and decender as well
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ftGX2Data *ftData = &fontData[pixelSize];
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FT_UInt gIndex;
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uint16_t textureWidth = 0, textureHeight = 0;
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if (ftPointSize != pixelSize)
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{
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ftPointSize = pixelSize;
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FT_Set_Pixel_Sizes(ftFace, 0, ftPointSize);
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ftData->ftgxAlign.ascender = (int16_t) ftFace->size->metrics.ascender >> 6;
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ftData->ftgxAlign.descender = (int16_t) ftFace->size->metrics.descender >> 6;
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ftData->ftgxAlign.max = 0;
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ftData->ftgxAlign.min = 0;
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}
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gIndex = FT_Get_Char_Index(ftFace, (FT_ULong) charCode);
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if (gIndex != 0 && FT_Load_Glyph(ftFace, gIndex, FT_LOAD_DEFAULT | FT_LOAD_RENDER) == 0)
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{
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if (ftFace->glyph->format == FT_GLYPH_FORMAT_BITMAP)
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{
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FT_Bitmap *glyphBitmap = &ftFace->glyph->bitmap;
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textureWidth = ALIGN4(glyphBitmap->width);
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textureHeight = ALIGN4(glyphBitmap->rows);
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if(textureWidth == 0)
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textureWidth = 4;
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if(textureHeight == 0)
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textureHeight = 4;
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ftgxCharData *charData = &ftData->ftgxCharMap[charCode];
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charData->renderOffsetX = (int16_t) ftFace->glyph->bitmap_left;
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charData->glyphAdvanceX = (uint16_t) (ftFace->glyph->advance.x >> 6);
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charData->glyphAdvanceY = (uint16_t) (ftFace->glyph->advance.y >> 6);
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charData->glyphIndex = (uint32_t) gIndex;
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charData->renderOffsetY = (int16_t) ftFace->glyph->bitmap_top;
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charData->renderOffsetMax = (int16_t) ftFace->glyph->bitmap_top;
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charData->renderOffsetMin = (int16_t) glyphBitmap->rows - ftFace->glyph->bitmap_top;
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//! Initialize texture
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charData->texture = new GX2Texture;
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GX2InitTexture(charData->texture, textureWidth, textureHeight, 1, 0, GX2_SURFACE_FORMAT_TC_R5_G5_B5_A1_UNORM, GX2_SURFACE_DIM_2D, GX2_TILE_MODE_LINEAR_ALIGNED);
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loadGlyphData(glyphBitmap, charData);
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return charData;
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}
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}
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return NULL;
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}
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/**
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* Locates each character in this wrapper's configured font face and proccess them.
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*
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* This routine locates each character in the configured font face and renders the glyph's bitmap.
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* Each bitmap and relevant information is loaded into its own quickly addressible structure within an instance-specific map.
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*/
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uint16_t FreeTypeGX::cacheGlyphDataComplete(int16_t pixelSize)
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{
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uint32_t i = 0;
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FT_UInt gIndex;
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FT_ULong charCode = FT_Get_First_Char(ftFace, &gIndex);
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while (gIndex != 0)
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{
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if (cacheGlyphData(charCode, pixelSize) != NULL) ++i;
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charCode = FT_Get_Next_Char(ftFace, charCode, &gIndex);
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}
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return (uint16_t) (i);
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}
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/**
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* Loads the rendered bitmap into the relevant structure's data buffer.
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*
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* This routine does a simple byte-wise copy of the glyph's rendered 8-bit grayscale bitmap into the structure's buffer.
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* Each byte is converted from the bitmap's intensity value into the a uint32_t RGBA value.
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*
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* @param bmp A pointer to the most recently rendered glyph's bitmap.
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* @param charData A pointer to an allocated ftgxCharData structure whose data represent that of the last rendered glyph.
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*/
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void FreeTypeGX::loadGlyphData(FT_Bitmap *bmp, ftgxCharData *charData)
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{
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charData->texture->surface.image_data = (uint8_t *) memalign(charData->texture->surface.align, charData->texture->surface.image_size);
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if(!charData->texture->surface.image_data)
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return;
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memset(charData->texture->surface.image_data, 0x00, charData->texture->surface.image_size);
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uint8_t *src = (uint8_t *)bmp->buffer;
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uint16_t *dst = (uint16_t *)charData->texture->surface.image_data;
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int32_t x, y;
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for(y = 0; y < bmp->rows; y++)
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{
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for(x = 0; x < bmp->width; x++)
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{
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uint8_t intensity = src[y * bmp->width + x] >> 3;
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dst[y * charData->texture->surface.pitch + x] = intensity ? ((intensity << 11) | (intensity << 6) | (intensity << 1) | 1) : 0;
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}
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}
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GX2Invalidate(GX2_INVALIDATE_CPU_TEXTURE, charData->texture->surface.image_data, charData->texture->surface.image_size);
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}
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/**
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* Determines the x offset of the rendered string.
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*
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* This routine calculates the x offset of the rendered string based off of a supplied positional format parameter.
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*
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* @param width Current pixel width of the string.
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* @param format Positional format of the string.
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*/
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int16_t FreeTypeGX::getStyleOffsetWidth(uint16_t width, uint16_t format)
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{
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if (format & FTGX_JUSTIFY_LEFT)
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return 0;
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else if (format & FTGX_JUSTIFY_CENTER)
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return -(width >> 1);
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else if (format & FTGX_JUSTIFY_RIGHT) return -width;
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return 0;
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}
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/**
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* Determines the y offset of the rendered string.
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*
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* This routine calculates the y offset of the rendered string based off of a supplied positional format parameter.
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*
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* @param offset Current pixel offset data of the string.
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* @param format Positional format of the string.
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*/
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int16_t FreeTypeGX::getStyleOffsetHeight(int16_t format, uint16_t pixelSize)
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{
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std::map<int16_t, ftGX2Data>::iterator itr = fontData.find(pixelSize);
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if (itr == fontData.end()) return 0;
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switch (format & FTGX_ALIGN_MASK)
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{
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case FTGX_ALIGN_TOP:
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return itr->second.ftgxAlign.descender;
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case FTGX_ALIGN_MIDDLE:
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default:
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return (itr->second.ftgxAlign.ascender + itr->second.ftgxAlign.descender + 1) >> 1;
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case FTGX_ALIGN_BOTTOM:
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return itr->second.ftgxAlign.ascender;
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case FTGX_ALIGN_BASELINE:
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return 0;
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case FTGX_ALIGN_GLYPH_TOP:
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return itr->second.ftgxAlign.max;
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case FTGX_ALIGN_GLYPH_MIDDLE:
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return (itr->second.ftgxAlign.max + itr->second.ftgxAlign.min + 1) >> 1;
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case FTGX_ALIGN_GLYPH_BOTTOM:
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return itr->second.ftgxAlign.min;
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}
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return 0;
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}
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/**
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* Processes the supplied text string and prints the results at the specified coordinates.
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*
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* This routine processes each character of the supplied text string, loads the relevant preprocessed bitmap buffer,
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* a texture from said buffer, and loads the resultant texture into the EFB.
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*
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* @param x Screen X coordinate at which to output the text.
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* @param y Screen Y coordinate at which to output the text. Note that this value corresponds to the text string origin and not the top or bottom of the glyphs.
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* @param text NULL terminated string to output.
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* @param color Optional color to apply to the text characters. If not specified default value is ftgxWhite: (GXColor){0xff, 0xff, 0xff, 0xff}
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* @param textStyle Flags which specify any styling which should be applied to the rendered string.
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* @return The number of characters printed.
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*/
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uint16_t FreeTypeGX::drawText(CVideo *video, int16_t x, int16_t y, int16_t z, const wchar_t *text, int16_t pixelSize, const glm::vec4 & color, uint16_t textStyle, uint16_t textWidth, const float &textBlur, const float & colorBlurIntensity, const glm::vec4 & blurColor, const float & internalRenderingScale)
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{
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if (!text)
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return 0;
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uint16_t fullTextWidth = (textWidth > 0) ? textWidth : getWidth(text, pixelSize);
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uint16_t x_pos = x, printed = 0;
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uint16_t x_offset = 0, y_offset = 0;
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FT_Vector pairDelta;
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if (textStyle & FTGX_JUSTIFY_MASK)
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{
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x_offset = getStyleOffsetWidth(fullTextWidth, textStyle);
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}
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if (textStyle & FTGX_ALIGN_MASK)
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{
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y_offset = getStyleOffsetHeight(textStyle, pixelSize);
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}
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int32_t i = 0;
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while (text[i])
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{
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ftgxCharData* glyphData = cacheGlyphData(text[i], pixelSize);
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if (glyphData != NULL)
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{
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if (ftKerningEnabled && i > 0)
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{
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FT_Get_Kerning(ftFace, fontData[pixelSize].ftgxCharMap[text[i - 1]].glyphIndex, glyphData->glyphIndex, FT_KERNING_DEFAULT, &pairDelta);
|
||
|
x_pos += (pairDelta.x >> 6);
|
||
|
|
||
|
}
|
||
|
copyTextureToFramebuffer(video, glyphData->texture,x_pos + glyphData->renderOffsetX + x_offset, y + glyphData->renderOffsetY - y_offset, z, color, textBlur, colorBlurIntensity, blurColor,internalRenderingScale);
|
||
|
|
||
|
x_pos += glyphData->glyphAdvanceX;
|
||
|
++printed;
|
||
|
}
|
||
|
++i;
|
||
|
}
|
||
|
|
||
|
return printed;
|
||
|
}
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Processes the supplied string and return the width of the string in pixels.
|
||
|
*
|
||
|
* This routine processes each character of the supplied text string and calculates the width of the entire string.
|
||
|
* Note that if precaching of the entire font set is not enabled any uncached glyph will be cached after the call to this function.
|
||
|
*
|
||
|
* @param text NULL terminated string to calculate.
|
||
|
* @return The width of the text string in pixels.
|
||
|
*/
|
||
|
uint16_t FreeTypeGX::getWidth(const wchar_t *text, int16_t pixelSize)
|
||
|
{
|
||
|
if (!text) return 0;
|
||
|
|
||
|
uint16_t strWidth = 0;
|
||
|
FT_Vector pairDelta;
|
||
|
int32_t i = 0;
|
||
|
|
||
|
while (text[i])
|
||
|
{
|
||
|
ftgxCharData* glyphData = cacheGlyphData(text[i], pixelSize);
|
||
|
|
||
|
if (glyphData != NULL)
|
||
|
{
|
||
|
if (ftKerningEnabled && (i > 0))
|
||
|
{
|
||
|
FT_Get_Kerning(ftFace, fontData[pixelSize].ftgxCharMap[text[i - 1]].glyphIndex, glyphData->glyphIndex, FT_KERNING_DEFAULT, &pairDelta);
|
||
|
strWidth += pairDelta.x >> 6;
|
||
|
}
|
||
|
|
||
|
strWidth += glyphData->glyphAdvanceX;
|
||
|
}
|
||
|
++i;
|
||
|
}
|
||
|
return strWidth;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Single char width
|
||
|
*/
|
||
|
uint16_t FreeTypeGX::getCharWidth(const wchar_t wChar, int16_t pixelSize, const wchar_t prevChar)
|
||
|
{
|
||
|
uint16_t strWidth = 0;
|
||
|
ftgxCharData * glyphData = cacheGlyphData(wChar, pixelSize);
|
||
|
|
||
|
if (glyphData != NULL)
|
||
|
{
|
||
|
if (ftKerningEnabled && prevChar != 0x0000)
|
||
|
{
|
||
|
FT_Vector pairDelta;
|
||
|
FT_Get_Kerning(ftFace, fontData[pixelSize].ftgxCharMap[prevChar].glyphIndex, glyphData->glyphIndex, FT_KERNING_DEFAULT, &pairDelta);
|
||
|
strWidth += pairDelta.x >> 6;
|
||
|
}
|
||
|
strWidth += glyphData->glyphAdvanceX;
|
||
|
}
|
||
|
|
||
|
return strWidth;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Processes the supplied string and return the height of the string in pixels.
|
||
|
*
|
||
|
* This routine processes each character of the supplied text string and calculates the height of the entire string.
|
||
|
* Note that if precaching of the entire font set is not enabled any uncached glyph will be cached after the call to this function.
|
||
|
*
|
||
|
* @param text NULL terminated string to calculate.
|
||
|
* @return The height of the text string in pixels.
|
||
|
*/
|
||
|
uint16_t FreeTypeGX::getHeight(const wchar_t *text, int16_t pixelSize)
|
||
|
{
|
||
|
getOffset(text, pixelSize);
|
||
|
return fontData[pixelSize].ftgxAlign.max - fontData[pixelSize].ftgxAlign.min;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Get the maximum offset above and minimum offset below the font origin line.
|
||
|
*
|
||
|
* This function calculates the maximum pixel height above the font origin line and the minimum
|
||
|
* pixel height below the font origin line and returns the values in an addressible structure.
|
||
|
*
|
||
|
* @param text NULL terminated string to calculate.
|
||
|
* @param offset returns the max and min values above and below the font origin line
|
||
|
*
|
||
|
*/
|
||
|
void FreeTypeGX::getOffset(const wchar_t *text, int16_t pixelSize, uint16_t widthLimit)
|
||
|
{
|
||
|
if (fontData.find(pixelSize) != fontData.end())
|
||
|
return;
|
||
|
|
||
|
int16_t strMax = 0, strMin = 9999;
|
||
|
uint16_t currWidth = 0;
|
||
|
|
||
|
int32_t i = 0;
|
||
|
|
||
|
while (text[i])
|
||
|
{
|
||
|
if (widthLimit > 0 && currWidth >= widthLimit) break;
|
||
|
|
||
|
ftgxCharData* glyphData = cacheGlyphData(text[i], pixelSize);
|
||
|
|
||
|
if (glyphData != NULL)
|
||
|
{
|
||
|
strMax = glyphData->renderOffsetMax > strMax ? glyphData->renderOffsetMax : strMax;
|
||
|
strMin = glyphData->renderOffsetMin < strMin ? glyphData->renderOffsetMin : strMin;
|
||
|
currWidth += glyphData->glyphAdvanceX;
|
||
|
}
|
||
|
|
||
|
++i;
|
||
|
}
|
||
|
|
||
|
if (ftPointSize != pixelSize)
|
||
|
{
|
||
|
ftPointSize = pixelSize;
|
||
|
FT_Set_Pixel_Sizes(ftFace, 0, ftPointSize);
|
||
|
}
|
||
|
|
||
|
fontData[pixelSize].ftgxAlign.ascender = ftFace->size->metrics.ascender >> 6;
|
||
|
fontData[pixelSize].ftgxAlign.descender = ftFace->size->metrics.descender >> 6;
|
||
|
fontData[pixelSize].ftgxAlign.max = strMax;
|
||
|
fontData[pixelSize].ftgxAlign.min = strMin;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Copies the supplied texture quad to the EFB.
|
||
|
*
|
||
|
* This routine uses the in-built GX quad builder functions to define the texture bounds and location on the EFB target.
|
||
|
*
|
||
|
* @param texObj A pointer to the glyph's initialized texture object.
|
||
|
* @param texWidth The pixel width of the texture object.
|
||
|
* @param texHeight The pixel height of the texture object.
|
||
|
* @param screenX The screen X coordinate at which to output the rendered texture.
|
||
|
* @param screenY The screen Y coordinate at which to output the rendered texture.
|
||
|
* @param color Color to apply to the texture.
|
||
|
*/
|
||
|
void FreeTypeGX::copyTextureToFramebuffer(CVideo *pVideo, GX2Texture *texture, int16_t x, int16_t y, int16_t z, const glm::vec4 & color, const float & defaultBlur, const float & blurIntensity, const glm::vec4 & blurColor, const float & internalRenderingScale)
|
||
|
{
|
||
|
static const f32 imageAngle = 0.0f;
|
||
|
static const f32 blurScale = (2.0f/ (internalRenderingScale));
|
||
|
|
||
|
f32 offsetLeft = blurScale * ((f32)x + 0.5f * (f32)texture->surface.width) * (f32)pVideo->getWidthScaleFactor();
|
||
|
f32 offsetTop = blurScale * ((f32)y - 0.5f * (f32)texture->surface.height) * (f32)pVideo->getHeightScaleFactor();
|
||
|
|
||
|
f32 widthScale = blurScale * (f32)texture->surface.width * pVideo->getWidthScaleFactor();
|
||
|
f32 heightScale = blurScale * (f32)texture->surface.height * pVideo->getHeightScaleFactor();
|
||
|
|
||
|
glm::vec3 positionOffsets( offsetLeft, offsetTop, (f32)z );
|
||
|
|
||
|
//! blur doubles due to blur we have to scale the texture
|
||
|
glm::vec3 scaleFactor( widthScale, heightScale, 1.0f );
|
||
|
|
||
|
glm::vec3 blurDirection;
|
||
|
blurDirection[2] = 1.0f;
|
||
|
|
||
|
Texture2DShader::instance()->setShaders();
|
||
|
Texture2DShader::instance()->setAttributeBuffer();
|
||
|
Texture2DShader::instance()->setAngle(imageAngle);
|
||
|
Texture2DShader::instance()->setOffset(positionOffsets);
|
||
|
Texture2DShader::instance()->setScale(scaleFactor);
|
||
|
Texture2DShader::instance()->setTextureAndSampler(texture, &ftSampler);
|
||
|
|
||
|
if(blurIntensity > 0.0f)
|
||
|
{
|
||
|
//! glow blur color
|
||
|
Texture2DShader::instance()->setColorIntensity(blurColor);
|
||
|
|
||
|
//! glow blur horizontal
|
||
|
blurDirection[0] = blurIntensity;
|
||
|
blurDirection[1] = 0.0f;
|
||
|
Texture2DShader::instance()->setBlurring(blurDirection);
|
||
|
Texture2DShader::instance()->draw();
|
||
|
|
||
|
//! glow blur vertical
|
||
|
blurDirection[0] = 0.0f;
|
||
|
blurDirection[1] = blurIntensity;
|
||
|
Texture2DShader::instance()->setBlurring(blurDirection);
|
||
|
Texture2DShader::instance()->draw();
|
||
|
}
|
||
|
|
||
|
//! set text color
|
||
|
Texture2DShader::instance()->setColorIntensity(color);
|
||
|
|
||
|
//! blur horizontal
|
||
|
blurDirection[0] = defaultBlur;
|
||
|
blurDirection[1] = 0.0f;
|
||
|
Texture2DShader::instance()->setBlurring(blurDirection);
|
||
|
Texture2DShader::instance()->draw();
|
||
|
|
||
|
//! blur vertical
|
||
|
blurDirection[0] = 0.0f;
|
||
|
blurDirection[1] = defaultBlur;
|
||
|
Texture2DShader::instance()->setBlurring(blurDirection);
|
||
|
Texture2DShader::instance()->draw();
|
||
|
}
|