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CloverBootloader/rEFIt_UEFI/libeg/text.cpp
SergeySlice 38319f70bc correct font handling 
Signed-off-by: SergeySlice <sergey.slice@gmail.com>
2020-03-29 10:14:14 +03:00

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/*
* libeg/text.c
* Text drawing functions
*
* Copyright (c) 2006 Christoph Pfisterer
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Christoph Pfisterer nor the names of the
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//Slice 2011 - 2016 numerous improvements
#include "libegint.h"
#include "nanosvg.h"
//#include "egemb_font.h"
//#define FONT_CELL_WIDTH (7)
//#define FONT_CELL_HEIGHT (12)
#ifndef DEBUG_ALL
#define DEBUG_TEXT 0
#else
#define DEBUG_TEXT DEBUG_ALL
#endif
#if DEBUG_TEXT == 0
#define DBG(...)
#else
#define DBG(...) DebugLog(DEBUG_TEXT, __VA_ARGS__)
#endif
EG_IMAGE *FontImage = NULL;
INTN FontWidth = 9; //local variable
INTN FontHeight = 18;
INTN TextHeight = 19;
NSVGfontChain *fontsDB = NULL;
CONST EG_PIXEL SemiWhitePixel = {255, 255, 255, 210}; //semitransparent
//
// Text rendering
//
#if USE_XTHEME
VOID egMeasureText(IN CONST CHAR16 *Text, OUT INTN *Width, OUT INTN *Height)
{
INTN ScaledWidth = (INTN)(ThemeX.CharWidth * ThemeX.Scale);
if (Width != NULL)
*Width = StrLen(Text) * ((FontWidth > ScaledWidth)?FontWidth:ScaledWidth);
if (Height != NULL)
*Height = FontHeight;
}
#else
VOID egMeasureText(IN CONST CHAR16 *Text, OUT INTN *Width, OUT INTN *Height)
{
INTN ScaledWidth = (INTN)(GlobalConfig.CharWidth * GlobalConfig.Scale);
if (Width != NULL)
*Width = StrLen(Text) * ((FontWidth > ScaledWidth)?FontWidth:ScaledWidth);
if (Height != NULL)
*Height = FontHeight;
}
#endif
//should be rewritten to use XImage and XStringW
EG_IMAGE * egLoadFontImage(IN BOOLEAN UseEmbedded, IN INTN Rows, IN INTN Cols)
{
EG_IMAGE *NewImage = NULL, *NewFontImage;
INTN ImageWidth, ImageHeight, x, y, Ypos, j;
EG_PIXEL *PixelPtr, FirstPixel;
BOOLEAN isKorean = (gLanguage == korean);
CHAR16 *fontFilePath = NULL;
CONST CHAR16 *commonFontDir = L"EFI\\CLOVER\\font";
if (IsEmbeddedTheme() && !isKorean) { //or initial screen before theme init
NewImage = egDecodePNG(ACCESS_EMB_DATA(emb_font_data), ACCESS_EMB_SIZE(emb_font_data), TRUE);
MsgLog("Using embedded font: %s\n", NewImage ? "Success" : "Error");
} else {
#if USE_XTHEME
if (!ThemeX.TypeSVG) {
NewImage = egLoadImage(ThemeDir, isKorean ? L"FontKorean.png" : ThemeX.FontFileName.data(), TRUE);
MsgLog("Loading font from ThemeDir: %s\n", NewImage ? "Success" : "Error");
} else {
MsgLog("Using SVG font\n");
return FontImage;
}
#else
if (!GlobalConfig.TypeSVG) {
NewImage = egLoadImage(ThemeDir, isKorean ? L"FontKorean.png" : GlobalConfig.FontFileName, TRUE);
MsgLog("Loading font from ThemeDir: %s\n", NewImage ? "Success" : "Error");
} else {
MsgLog("Using SVG font\n");
return FontImage;
}
#endif
}
if (!NewImage) {
//then take from common font folder
#if USE_XTHEME
fontFilePath = PoolPrint(L"%s\\%s", commonFontDir, isKorean ? L"FontKorean.png" : ThemeX.FontFileName.data());
#else
fontFilePath = PoolPrint(L"%s\\%s", commonFontDir, isKorean ? L"FontKorean.png" : GlobalConfig.FontFileName);
#endif
NewImage = egLoadImage(SelfRootDir, fontFilePath, TRUE);
//else use embedded
if (!NewImage) {
if (UseEmbedded) {
NewImage = egDecodePNG(ACCESS_EMB_DATA(emb_font_data), ACCESS_EMB_SIZE(emb_font_data), TRUE);
} else {
MsgLog("Font %ls is not loaded\n", fontFilePath);
FreePool(fontFilePath);
return NULL;
}
}
FreePool(fontFilePath);
}
ImageWidth = NewImage->Width;
DBG("ImageWidth=%lld\n", ImageWidth);
ImageHeight = NewImage->Height;
DBG("ImageHeight=%lld\n", ImageHeight);
PixelPtr = NewImage->PixelData;
NewFontImage = egCreateImage(ImageWidth * Rows, ImageHeight / Rows, TRUE);
if (NewFontImage == NULL) {
DBG("Can't create new font image!\n");
if (NewImage) {
egFreeImage(NewImage);
}
return NULL;
}
FontWidth = ImageWidth / Cols;
FontHeight = ImageHeight / Rows;
#if USE_XTHEME
TextHeight = FontHeight + (int)(TEXT_YMARGIN * 2 * ThemeX.Scale);
#else
TextHeight = FontHeight + (int)(TEXT_YMARGIN * 2 * GlobalConfig.Scale);
#endif
FirstPixel = *PixelPtr;
for (y = 0; y < Rows; y++) {
for (j = 0; j < FontHeight; j++) {
Ypos = ((j * Rows) + y) * ImageWidth;
for (x = 0; x < ImageWidth; x++) {
if (
//First pixel is accounting as "blue key"
(PixelPtr->b == FirstPixel.b) &&
(PixelPtr->g == FirstPixel.g) &&
(PixelPtr->r == FirstPixel.r)
) {
PixelPtr->a = 0;
#if USE_XTHEME
} else if (ThemeX.DarkEmbedded) {
*PixelPtr = SemiWhitePixel;
#else
} else if (GlobalConfig.DarkEmbedded) {
*PixelPtr = SemiWhitePixel;
#endif
}
NewFontImage->PixelData[Ypos + x] = *PixelPtr++;
}
}
}
egFreeImage(NewImage);
return NewFontImage;
}
VOID PrepareFont()
{
EG_PIXEL *p;
INTN Width, Height;
#if USE_XTHEME
TextHeight = FontHeight + (int)(TEXT_YMARGIN * 2 * ThemeX.Scale);
if (ThemeX.TypeSVG) {
return;
}
#else
TextHeight = FontHeight + (int)(TEXT_YMARGIN * 2 * GlobalConfig.Scale);
if (GlobalConfig.TypeSVG) {
// FontImage = RenderSVGfont();
return;
}
#endif
if (FontImage) {
egFreeImage(FontImage);
FontImage = NULL;
}
if (gLanguage == korean) {
FontImage = egLoadFontImage(FALSE, 10, 28);
if (FontImage) {
#if USE_XTHEME
ThemeX.CharWidth = 22;
#else
GlobalConfig.CharWidth = 22;
#endif
MsgLog("Using Korean font matrix\n");
return;
} else {
MsgLog("Korean font image not loaded, use english\n");
gLanguage = english;
}
}
// load the font
if (FontImage == NULL){
DBG("load font image type %d\n", GlobalConfig.Font);
FontImage = egLoadFontImage(TRUE, 16, 16); //anyway success
}
if (FontImage) {
#if USE_XTHEME
if (ThemeX.Font == FONT_GRAY) {
//invert the font. embedded is dark
p = FontImage->PixelData;
for (Height = 0; Height < FontImage->Height; Height++){
for (Width = 0; Width < FontImage->Width; Width++, p++){
p->b ^= 0xFF;
p->g ^= 0xFF;
p->r ^= 0xFF;
//p->a = 0xFF; //huh!
}
}
}
#else
if (GlobalConfig.Font == FONT_GRAY) {
//invert the font. embedded is dark
p = FontImage->PixelData;
for (Height = 0; Height < FontImage->Height; Height++){
for (Width = 0; Width < FontImage->Width; Width++, p++){
p->b ^= 0xFF;
p->g ^= 0xFF;
p->r ^= 0xFF;
//p->a = 0xFF; //huh!
}
}
}
#endif
// TextHeight = FontHeight + TEXT_YMARGIN * 2;
DBG("Font %d prepared WxH=%lldx%lld CharWidth=%lld\n", GlobalConfig.Font, FontWidth, FontHeight, GlobalConfig.CharWidth);
} else {
DBG("Failed to load font\n");
}
}
static inline BOOLEAN EmptyPix(EG_PIXEL *Ptr, EG_PIXEL *FirstPixel)
{
//compare with first pixel of the array top-left point [0][0]
return ((Ptr->r >= FirstPixel->r - (FirstPixel->r >> 2)) &&
(Ptr->r <= FirstPixel->r + (FirstPixel->r >> 2)) &&
(Ptr->g >= FirstPixel->g - (FirstPixel->g >> 2)) &&
(Ptr->g <= FirstPixel->g + (FirstPixel->g >> 2)) &&
(Ptr->b >= FirstPixel->b - (FirstPixel->b >> 2)) &&
(Ptr->b <= FirstPixel->b + (FirstPixel->b >> 2)) &&
(Ptr->a == FirstPixel->a)); //hack for transparent fonts
}
INTN GetEmpty(EG_PIXEL *Ptr, EG_PIXEL *FirstPixel, INTN MaxWidth, INTN Step, INTN Row)
{
INTN i, j, m;
EG_PIXEL *Ptr0, *Ptr1;
Ptr1 = (Step > 0)?Ptr:Ptr - 1;
m = MaxWidth;
for (j = 0; j < FontHeight; j++) {
Ptr0 = Ptr1 + j * Row;
for (i = 0; i < MaxWidth; i++) {
if (!EmptyPix(Ptr0, FirstPixel)) {
break;
}
Ptr0 += Step;
}
m = (i > m)?m:i;
}
return m;
}
#if USE_XTHEME
INTN egRenderText(IN XStringW& Text, IN XImage& CompImage,
IN INTN PosX, IN INTN PosY, IN INTN Cursor, INTN textType)
#else
INTN egRenderText(IN CONST CHAR16 *Text, IN OUT EG_IMAGE *CompImage,
IN INTN PosX, IN INTN PosY, IN INTN Cursor, INTN textType)
#endif
{
EG_PIXEL *BufferPtr;
EG_PIXEL *FontPixelData;
EG_PIXEL *FirstPixelBuf;
INTN BufferLineWidth, BufferLineOffset, FontLineOffset;
INTN TextLength /*, NewTextLength = 0 */;
INTN i;
UINT16 c, c1, c0;
UINTN Shift = 0;
UINTN Cho = 0, Jong = 0, Joong = 0;
UINTN LeftSpace, RightSpace;
INTN RealWidth = 0;
#if USE_XTHEME
INTN ScaledWidth = (INTN)(ThemeX.CharWidth * ThemeX.Scale);
if (ThemeX.TypeSVG) {
return renderSVGtext(CompImage, PosX, PosY, textType, Text, Cursor);
}
#else
INTN ScaledWidth = (INTN)(GlobalConfig.CharWidth * GlobalConfig.Scale);
if (GlobalConfig.TypeSVG) {
return renderSVGtext(CompImage, PosX, PosY, textType, Text, Cursor);
}
#endif
// clip the text
#if USE_XTHEME
TextLength = Text.size();
#else
TextLength = StrLen(Text);
#endif
if (!FontImage) {
// GlobalConfig.Font = FONT_ALFA;
PrepareFont();
}
// DBG("TextLength =%d PosX=%d PosY=%d\n", TextLength, PosX, PosY);
// render it
#if USE_XTHEME
BufferPtr = (EG_PIXEL*)CompImage.GetPixelPtr(0,0);
BufferLineOffset = CompImage.GetWidth();
#else
BufferPtr = CompImage->PixelData;
BufferLineOffset = CompImage->Width;
#endif
BufferLineWidth = BufferLineOffset - PosX; // remove indent from drawing width
BufferPtr += PosX + PosY * BufferLineOffset;
FirstPixelBuf = BufferPtr;
FontPixelData = FontImage->PixelData;
FontLineOffset = FontImage->Width;
// DBG("BufferLineOffset=%d FontLineOffset=%d\n", BufferLineOffset, FontLineOffset);
if (ScaledWidth < FontWidth) {
Shift = (FontWidth - ScaledWidth) >> 1;
}
c0 = 0;
RealWidth = ScaledWidth;
// DBG("FontWidth=%d, CharWidth=%d\n", FontWidth, RealWidth);
for (i = 0; i < TextLength; i++) {
#if USE_XTHEME
c = Text.data()[i];
#else
c = Text[i];
#endif
if (gLanguage != korean) {
#if USE_XTHEME
c1 = (((c >= ThemeX.Codepage) ? (c - (ThemeX.Codepage - AsciiPageSize)) : c) & 0xff); //International letters
c = c1;
if (ThemeX.Proportional) {
#else
c1 = (((c >= GlobalConfig.Codepage) ? (c - (GlobalConfig.Codepage - AsciiPageSize)) : c) & 0xff); //International letters
c = c1;
if (GlobalConfig.Proportional) {
#endif
if (c0 <= 0x20) { // space before or at buffer edge
LeftSpace = 2;
} else {
LeftSpace = GetEmpty(BufferPtr, FirstPixelBuf, ScaledWidth, -1, BufferLineOffset);
}
if (c <= 0x20) { //new space will be half width
RightSpace = 1;
RealWidth = (ScaledWidth >> 1) + 1;
} else {
RightSpace = GetEmpty(FontPixelData + c * FontWidth, FontPixelData, FontWidth, 1, FontLineOffset);
if (RightSpace >= ScaledWidth + Shift) {
RightSpace = 0; //empty place for invisible characters
}
RealWidth = FontWidth - RightSpace;
}
} else {
LeftSpace = 2;
RightSpace = Shift;
}
c0 = c; //old value
if ((UINTN)BufferPtr + RealWidth * 4 > (UINTN)FirstPixelBuf + BufferLineWidth * 4) {
break;
}
egRawCompose(BufferPtr - LeftSpace + 2, FontPixelData + c * FontWidth + RightSpace,
RealWidth, FontHeight,
BufferLineOffset, FontLineOffset);
if (i == Cursor) {
c = 0x5F;
egRawCompose(BufferPtr - LeftSpace + 2, FontPixelData + c * FontWidth + RightSpace,
RealWidth, FontHeight,
BufferLineOffset, FontLineOffset);
}
BufferPtr += RealWidth - LeftSpace + 2;
} else {
//
if ((c >= 0x20) && (c <= 0x7F)) {
c1 = ((c - 0x20) >> 4) * 28 + (c & 0x0F);
Cho = c1;
Shift = 12;
} else if ((c < 0x20) || ((c > 0x7F) && (c < 0xAC00))) {
Cho = 0x0E; //just a dot
Shift = 8;
} else if ((c >= 0xAC00) && (c <= 0xD638)) {
//korean
Shift = 18;
c -= 0xAC00;
c1 = c / 28;
Jong = c % 28;
Cho = c1 / 21;
Joong = c1 % 21;
Cho += 28 * 7;
Joong += 28 * 8;
Jong += 28 * 9;
}
// DBG("Cho=%d Joong=%d Jong=%d\n", Cho, Joong, Jong);
if (Shift == 18) {
egRawCompose(BufferPtr, FontPixelData + Cho * FontWidth + 4 + FontLineOffset,
ScaledWidth, FontHeight,
BufferLineOffset, FontLineOffset);
} else {
egRawCompose(BufferPtr + BufferLineOffset * 3, FontPixelData + Cho * FontWidth + 2,
ScaledWidth, FontHeight,
BufferLineOffset, FontLineOffset);
}
if (i == Cursor) {
c = 99;
egRawCompose(BufferPtr, FontPixelData + c * FontWidth + 2,
ScaledWidth, FontHeight,
BufferLineOffset, FontLineOffset);
}
if (Shift == 18) {
egRawCompose(BufferPtr + 9, FontPixelData + Joong * FontWidth + 6, //9 , 4 are tunable
ScaledWidth - 8, FontHeight,
BufferLineOffset, FontLineOffset);
egRawCompose(BufferPtr + BufferLineOffset * 9, FontPixelData + Jong * FontWidth + 1,
ScaledWidth, FontHeight - 3,
BufferLineOffset, FontLineOffset);
}
BufferPtr += Shift;
}
}
return ((INTN)BufferPtr - (INTN)FirstPixelBuf) / sizeof(EG_PIXEL);
}
/* EOF */
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