fabfonts.cpp

/*
  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - <http://www.fabgl.com>
  Copyright (c) 2019-2022 Fabrizio Di Vittorio.
  All rights reserved.
 
 
* Please contact fdivitto2013@gmail.com if you need a commercial license.
 
 
* This library and related software is available under GPL v3.
 
  FabGL is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  FabGL is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with FabGL.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
 
#define FABGL_FONT_INCLUDE_DEFINITION
 
#include "fabfonts.h"
 
 
 
namespace fabgl {
 
 
// do not include all fonts in "font" folder to avoid waste of flash
// for apps that uses getPresetFontInfo() (used in Terminal class), getPresetFontInfoFromHeight()
// and getPresetFixedFont().
static const FontInfo * FIXED_WIDTH_EMBEDDED_FONTS[] = {
  // please, bigger fonts first!
  &FONT_8x19,
  &FONT_8x16,
  &FONT_8x14,
  &FONT_8x8,
  &FONT_8x9,
  &FONT_6x8,
  &FONT_5x7,
  &FONT_4x6,
};
 
 
static const FontInfo * VAR_WIDTH_EMBEDDED_FONTS[] = {
  // please, bigger fonts first!
  &FONT_std_24,
  &FONT_std_22,
  &FONT_std_18,
  &FONT_std_17,
  &FONT_std_16,
  &FONT_std_15,
  &FONT_std_14,
  &FONT_std_12,
};
 
 
 
FontInfo const * getFixedWidthFont(int index)
{
  return FIXED_WIDTH_EMBEDDED_FONTS[index];
}
 
 
int getFixedWidthFontCount()
{
  return sizeof(FIXED_WIDTH_EMBEDDED_FONTS) / sizeof(FontInfo*);
}
 
 
FontInfo const * getVarWidthFont(int index)
{
  return VAR_WIDTH_EMBEDDED_FONTS[index];
}
 
 
int getVarWidthFontCount()
{
  return sizeof(VAR_WIDTH_EMBEDDED_FONTS) / sizeof(FontInfo*);
}
 
 
FontInfo const * getPresetFontInfo(int viewPortWidth, int viewPortHeight, int columns, int rows)
{
  FontInfo const * fontInfo = nullptr;
  for (int i = 0; i < getFixedWidthFontCount(); ++i) {
    fontInfo = getFixedWidthFont(i);
    if (viewPortWidth / fontInfo->width >= columns && viewPortHeight / fontInfo->height >= rows)
      return fontInfo;
  }
  // not found, return the smallest
  return fontInfo;
}
 
 
FontInfo const * getPresetFontInfoFromHeight(int height, bool fixedWidth)
{
  FontInfo const * fontInfo = nullptr;
  if (fixedWidth) {
    for (int i = 0; i < getFixedWidthFontCount(); ++i) {
      fontInfo = getFixedWidthFont(i);
      if (height >= fontInfo->height)
        return fontInfo;
    }
  } else {
    for (int i = 0; i < getVarWidthFontCount(); ++i) {
      fontInfo = getVarWidthFont(i);
      if (height >= fontInfo->height)
        return fontInfo;
    }
  }
  // not found, return the smallest
  return fontInfo;
}
 
 
FontInfo const * getPresetFixedFont(int width, int height)
{
  FontInfo const * fontInfo = nullptr;
  for (int i = 0; i < getFixedWidthFontCount(); ++i) {
    fontInfo = getFixedWidthFont(i);
    if (height == fontInfo->height && width == fontInfo->width)
      return fontInfo;
  }
  // not found, return the smallest (TODO: find a way to get meaningful result)
  return fontInfo;
}
 
 
 
}