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