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/BitmapImage.cpp@3:a8f72d4864e6, 2014-05-27 (annotated)
- Committer:
- neilt6
- Date:
- Tue May 27 21:41:28 2014 +0000
- Revision:
- 3:a8f72d4864e6
- Parent:
- 1:f7003ec66a51
Syntax improvements
Who changed what in which revision?
User | Revision | Line number | New 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 "BitmapImage.h" |
neilt6 | 0:b876cf091464 | 18 | |
neilt6 | 1:f7003ec66a51 | 19 | BitmapImage::BitmapImage(const char* table) : Image(table[0] * 0xFF + table[1], table[2] * 0xFF + table[3]) |
neilt6 | 0:b876cf091464 | 20 | { |
neilt6 | 0:b876cf091464 | 21 | m_ImageTable = table; |
neilt6 | 0:b876cf091464 | 22 | m_FgColor = 0xFFFFFFFF; |
neilt6 | 0:b876cf091464 | 23 | m_BgColor = 0x00000000; |
neilt6 | 0:b876cf091464 | 24 | } |
neilt6 | 0:b876cf091464 | 25 | |
neilt6 | 1:f7003ec66a51 | 26 | BitmapImage::BitmapImage(const char* table, unsigned int fg_color) : Image(table[0] * 0xFF + table[1], table[2] * 0xFF + table[3]) |
neilt6 | 0:b876cf091464 | 27 | { |
neilt6 | 0:b876cf091464 | 28 | m_ImageTable = table; |
neilt6 | 0:b876cf091464 | 29 | m_FgColor = fg_color; |
neilt6 | 0:b876cf091464 | 30 | m_BgColor = 0x00000000; |
neilt6 | 0:b876cf091464 | 31 | } |
neilt6 | 0:b876cf091464 | 32 | |
neilt6 | 1:f7003ec66a51 | 33 | BitmapImage::BitmapImage(const char* table, unsigned int fg_color, unsigned int bg_color) : Image(table[0] * 0xFF + table[1], table[2] * 0xFF + table[3]) |
neilt6 | 0:b876cf091464 | 34 | { |
neilt6 | 0:b876cf091464 | 35 | m_ImageTable = table; |
neilt6 | 0:b876cf091464 | 36 | m_FgColor = fg_color; |
neilt6 | 0:b876cf091464 | 37 | m_BgColor = bg_color; |
neilt6 | 0:b876cf091464 | 38 | } |
neilt6 | 0:b876cf091464 | 39 | |
neilt6 | 0:b876cf091464 | 40 | unsigned int BitmapImage::pixel(int x, int y) |
neilt6 | 0:b876cf091464 | 41 | { |
neilt6 | 0:b876cf091464 | 42 | int addr; |
neilt6 | 0:b876cf091464 | 43 | int mask; |
neilt6 | 0:b876cf091464 | 44 | int bpl; |
neilt6 | 0:b876cf091464 | 45 | |
neilt6 | 0:b876cf091464 | 46 | //Range check the pixel request |
neilt6 | 0:b876cf091464 | 47 | if ((x < 0) || (y < 0) || (x >= width()) || (y >= height())) return 0x000000; |
neilt6 | 0:b876cf091464 | 48 | |
neilt6 | 0:b876cf091464 | 49 | //Get the pixel address |
neilt6 | 0:b876cf091464 | 50 | bpl = bytesPerLine(); |
neilt6 | 0:b876cf091464 | 51 | mask = 0x80 >> (x % 8); |
neilt6 | 0:b876cf091464 | 52 | addr = 4 + y * bpl + (x / 8); |
neilt6 | 0:b876cf091464 | 53 | |
neilt6 | 0:b876cf091464 | 54 | //Return the appropriate color |
neilt6 | 0:b876cf091464 | 55 | if (m_ImageTable[addr] & mask) |
neilt6 | 0:b876cf091464 | 56 | return m_FgColor; |
neilt6 | 0:b876cf091464 | 57 | else |
neilt6 | 0:b876cf091464 | 58 | return m_BgColor; |
neilt6 | 0:b876cf091464 | 59 | } |
neilt6 | 0:b876cf091464 | 60 | |
neilt6 | 1:f7003ec66a51 | 61 | unsigned int BitmapImage::foreground() |
neilt6 | 0:b876cf091464 | 62 | { |
neilt6 | 0:b876cf091464 | 63 | return m_FgColor; |
neilt6 | 0:b876cf091464 | 64 | } |
neilt6 | 0:b876cf091464 | 65 | |
neilt6 | 0:b876cf091464 | 66 | void BitmapImage::foreground(unsigned int c) |
neilt6 | 0:b876cf091464 | 67 | { |
neilt6 | 0:b876cf091464 | 68 | m_FgColor = c; |
neilt6 | 0:b876cf091464 | 69 | } |
neilt6 | 0:b876cf091464 | 70 | |
neilt6 | 1:f7003ec66a51 | 71 | unsigned int BitmapImage::background() |
neilt6 | 0:b876cf091464 | 72 | { |
neilt6 | 0:b876cf091464 | 73 | return m_BgColor; |
neilt6 | 0:b876cf091464 | 74 | } |
neilt6 | 0:b876cf091464 | 75 | |
neilt6 | 0:b876cf091464 | 76 | void BitmapImage::background(unsigned int c) |
neilt6 | 0:b876cf091464 | 77 | { |
neilt6 | 0:b876cf091464 | 78 | m_BgColor = c; |
neilt6 | 0:b876cf091464 | 79 | } |
neilt6 | 0:b876cf091464 | 80 | |
neilt6 | 1:f7003ec66a51 | 81 | int BitmapImage::bytesPerLine() |
neilt6 | 0:b876cf091464 | 82 | { |
neilt6 | 0:b876cf091464 | 83 | int bpl; |
neilt6 | 0:b876cf091464 | 84 | |
neilt6 | 0:b876cf091464 | 85 | //Determine the bytes per line |
neilt6 | 0:b876cf091464 | 86 | bpl = width() / 8; |
neilt6 | 0:b876cf091464 | 87 | if ((width() % 8) != 0) bpl++; |
neilt6 | 0:b876cf091464 | 88 | |
neilt6 | 0:b876cf091464 | 89 | //Return the bytes per line |
neilt6 | 0:b876cf091464 | 90 | return bpl; |
neilt6 | 0:b876cf091464 | 91 | } |