Font.cpp

00001 /* NeatGUI Library
00002  * Copyright (c) 2013 Neil Thiessen
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #include "Font.h"
00018 
00019 Font::Font(const char* table)
00020 {
00021     m_FontTable = table;
00022     m_Color = 0xFFFFFFFF;
00023 }
00024 
00025 Font::Font(const char* table, unsigned int color)
00026 {
00027     m_FontTable = table;
00028     m_Color = color;
00029 }
00030 
00031 BitmapImage Font::glyph(char c)
00032 {
00033     while(1) {
00034         //Skip the height and numChars bytes
00035         const char *ptr = m_FontTable + 2;
00036 
00037         //Search for the character in the font table
00038         for(int i = 0; i < m_FontTable[0]; i++) {
00039             if (*ptr == c) {
00040                 //Return the image
00041                 return BitmapImage(m_FontTable + ptr[1] * 0xFF + ptr[2], m_Color);
00042             }
00043             ptr += 3;
00044         }
00045 
00046         //The character wasn't found, replace it with a space
00047         c = ' ';
00048     }
00049 }
00050 
00051 unsigned int Font::color()
00052 {
00053     return m_Color;
00054 }
00055 
00056 void Font::color(unsigned int c)
00057 {
00058     m_Color = c;
00059 }
00060 
00061 int Font::height()
00062 {
00063     return m_FontTable[1];
00064 }
00065 
00066 int Font::measureString(const char* str)
00067 {
00068     int i = 0;
00069     int slen = 0;
00070 
00071     //Find the length in pixels of the whole string
00072     while (str[i] != NULL) {
00073         slen += glyph(*str).width();
00074         i++;
00075     }
00076 
00077     return slen;
00078 }
00079 
00080 int Font::measureWord(const char* str)
00081 {
00082     int i = 0;
00083     int wlen = 0;
00084 
00085     //Find the length in pixels of the next word (separated by whitespace)
00086     while ((str[i] > ' ') && (str[i] <= 0x7E)) {
00087         wlen += glyph(*str).width();
00088         i++;
00089     }
00090 
00091     return wlen;
00092 }