Diff: Decoders/BitmapImage.cpp

Revision:

0:b876cf091464

Child:

1:f7003ec66a51

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Decoders/BitmapImage.cpp	Fri Aug 30 17:09:18 2013 +0000
@@ -0,0 +1,91 @@
+/* NeatGUI Library
+ * Copyright (c) 2013 Neil Thiessen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "BitmapImage.h"
+
+BitmapImage::BitmapImage(const char *table) : Image(table[0] * 0xFF + table[1], table[2] * 0xFF + table[3])
+{
+    m_ImageTable = table;
+    m_FgColor = 0xFFFFFFFF;
+    m_BgColor = 0x00000000;
+}
+
+BitmapImage::BitmapImage(const char *table, unsigned int fg_color) : Image(table[0] * 0xFF + table[1], table[2] * 0xFF + table[3])
+{
+    m_ImageTable = table;
+    m_FgColor = fg_color;
+    m_BgColor = 0x00000000;
+}
+
+BitmapImage::BitmapImage(const char *table, unsigned int fg_color, unsigned int bg_color) : Image(table[0] * 0xFF + table[1], table[2] * 0xFF + table[3])
+{
+    m_ImageTable = table;
+    m_FgColor = fg_color;
+    m_BgColor = bg_color;
+}
+
+unsigned int BitmapImage::pixel(int x, int y)
+{
+    int addr;
+    int mask;
+    int bpl;
+
+    //Range check the pixel request
+    if ((x < 0) || (y < 0) || (x >= width()) || (y >= height())) return 0x000000;
+
+    //Get the pixel address
+    bpl = bytesPerLine();
+    mask = 0x80 >> (x % 8);
+    addr = 4 + y * bpl + (x / 8);
+
+    //Return the appropriate color
+    if (m_ImageTable[addr] & mask)
+        return m_FgColor;
+    else
+        return m_BgColor;
+}
+
+unsigned int BitmapImage::foreground(void)
+{
+    return m_FgColor;
+}
+
+void BitmapImage::foreground(unsigned int c)
+{
+    m_FgColor = c;
+}
+
+unsigned int BitmapImage::background(void)
+{
+    return m_BgColor;
+}
+
+void BitmapImage::background(unsigned int c)
+{
+    m_BgColor = c;
+}
+
+int BitmapImage::bytesPerLine(void)
+{
+    int bpl;
+
+    //Determine the bytes per line
+    bpl = width() / 8;
+    if ((width() % 8) != 0) bpl++;
+
+    //Return the bytes per line
+    return bpl;
+}