Neil Thiessen / NeatGUI

A simple yet powerful library for controlling graphical displays. Multiple display controllers are supported using inheritance.

Dependents:   mbed_rifletool Hexi_Bubble_Game Hexi_Catch-the-dot_Game Hexi_Acceleromagnetic_Synth

NOTE: This library is in beta right now. As far as I know, everything here works, but there are many features that are lacking so far. Most notably containers, button handling, and display drivers other than the SSD1306.

Decoders/Font.cpp@1:f7003ec66a51, 2014-03-14 (annotated)

Committer:
neilt6
Date:
Fri Mar 14 19:17:44 2014 +0000
Revision:
1:f7003ec66a51
Parent:
0:b876cf091464 
Added rudimentary ILI9341 support, and SPI support for SSD1306

Who changed what in which revision?

UserRevisionLine numberNew contents of line
neilt6 0:b876cf091464 1 /* NeatGUI Library
neilt6 0:b876cf091464 2 * Copyright (c) 2013 Neil Thiessen
neilt6 0:b876cf091464 3 *
neilt6 0:b876cf091464 4 * Licensed under the Apache License, Version 2.0 (the "License");
neilt6 0:b876cf091464 5 * you may not use this file except in compliance with the License.
neilt6 0:b876cf091464 6 * You may obtain a copy of the License at
neilt6 0:b876cf091464 7 *
neilt6 0:b876cf091464 8 * http://www.apache.org/licenses/LICENSE-2.0
neilt6 0:b876cf091464 9 *
neilt6 0:b876cf091464 10 * Unless required by applicable law or agreed to in writing, software
neilt6 0:b876cf091464 11 * distributed under the License is distributed on an "AS IS" BASIS,
neilt6 0:b876cf091464 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
neilt6 0:b876cf091464 13 * See the License for the specific language governing permissions and
neilt6 0:b876cf091464 14 * limitations under the License.
neilt6 0:b876cf091464 15 */
neilt6 0:b876cf091464 16
neilt6 0:b876cf091464 17 #include "Font.h"
neilt6 0:b876cf091464 18
neilt6 1:f7003ec66a51 19 Font::Font(const char* table)
neilt6 0:b876cf091464 20 {
neilt6 0:b876cf091464 21 m_FontTable = table;
neilt6 0:b876cf091464 22 m_Color = 0xFFFFFFFF;
neilt6 0:b876cf091464 23 }
neilt6 0:b876cf091464 24
neilt6 1:f7003ec66a51 25 Font::Font(const char* table, unsigned int color)
neilt6 0:b876cf091464 26 {
neilt6 0:b876cf091464 27 m_FontTable = table;
neilt6 0:b876cf091464 28 m_Color = color;
neilt6 0:b876cf091464 29 }
neilt6 0:b876cf091464 30
neilt6 0:b876cf091464 31 BitmapImage Font::glyph(char c)
neilt6 0:b876cf091464 32 {
neilt6 0:b876cf091464 33 while(1) {
neilt6 0:b876cf091464 34 //Skip the height and numChars bytes
neilt6 0:b876cf091464 35 const char *ptr = m_FontTable + 2;
neilt6 0:b876cf091464 36
neilt6 0:b876cf091464 37 //Search for the character in the font table
neilt6 0:b876cf091464 38 for(int i = 0; i < m_FontTable[0]; i++) {
neilt6 0:b876cf091464 39 if (*ptr == c) {
neilt6 0:b876cf091464 40 //Return the image
neilt6 0:b876cf091464 41 return BitmapImage(m_FontTable + ptr[1] * 0xFF + ptr[2], m_Color);
neilt6 0:b876cf091464 42 }
neilt6 0:b876cf091464 43 ptr += 3;
neilt6 0:b876cf091464 44 }
neilt6 0:b876cf091464 45
neilt6 0:b876cf091464 46 //The character wasn't found, replace it with a space
neilt6 0:b876cf091464 47 c = ' ';
neilt6 0:b876cf091464 48 }
neilt6 0:b876cf091464 49 }
neilt6 0:b876cf091464 50
neilt6 1:f7003ec66a51 51 unsigned int Font::color()
neilt6 0:b876cf091464 52 {
neilt6 0:b876cf091464 53 return m_Color;
neilt6 0:b876cf091464 54 }
neilt6 0:b876cf091464 55
neilt6 0:b876cf091464 56 void Font::color(unsigned int c)
neilt6 0:b876cf091464 57 {
neilt6 0:b876cf091464 58 m_Color = c;
neilt6 0:b876cf091464 59 }
neilt6 0:b876cf091464 60
neilt6 1:f7003ec66a51 61 int Font::height()
neilt6 0:b876cf091464 62 {
neilt6 0:b876cf091464 63 return m_FontTable[1];
neilt6 0:b876cf091464 64 }
neilt6 0:b876cf091464 65
neilt6 1:f7003ec66a51 66 int Font::measureString(const char* str)
neilt6 0:b876cf091464 67 {
neilt6 0:b876cf091464 68 int i = 0;
neilt6 0:b876cf091464 69 int slen = 0;
neilt6 0:b876cf091464 70
neilt6 0:b876cf091464 71 //Find the length in pixels of the whole string
neilt6 0:b876cf091464 72 while (str[i] != NULL) {
neilt6 0:b876cf091464 73 slen += glyph(*str).width();
neilt6 0:b876cf091464 74 i++;
neilt6 0:b876cf091464 75 }
neilt6 0:b876cf091464 76
neilt6 0:b876cf091464 77 return slen;
neilt6 0:b876cf091464 78 }
neilt6 0:b876cf091464 79
neilt6 1:f7003ec66a51 80 int Font::measureWord(const char* str)
neilt6 0:b876cf091464 81 {
neilt6 0:b876cf091464 82 int i = 0;
neilt6 0:b876cf091464 83 int wlen = 0;
neilt6 0:b876cf091464 84
neilt6 0:b876cf091464 85 //Find the length in pixels of the next word (separated by whitespace)
neilt6 0:b876cf091464 86 while ((str[i] > ' ') && (str[i] <= 0x7E)) {
neilt6 0:b876cf091464 87 wlen += glyph(*str).width();
neilt6 0:b876cf091464 88 i++;
neilt6 0:b876cf091464 89 }
neilt6 0:b876cf091464 90
neilt6 0:b876cf091464 91 return wlen;
neilt6 0:b876cf091464 92 }