Diff: Decoders/BitmapImage.h

Revision:

0:b876cf091464

Child:

1:f7003ec66a51

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Decoders/BitmapImage.h	Fri Aug 30 17:09:18 2013 +0000
@@ -0,0 +1,93 @@
+/* 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.
+ */
+
+#ifndef BITMAP_IMAGE_H
+#define BITMAP_IMAGE_H
+
+#include "mbed.h"
+#include "Image.h"
+
+/** BitmapImage class.
+ *  Used to access a monochrome bitmap stored in an external table.
+ */
+class BitmapImage : public Image
+{
+public:
+    /** Create a BitmapImage object from the specified image table with a white foreground, and an alpha background
+     *
+     * @param table Pointer to the image table.
+     */
+    BitmapImage(const char *table);
+
+    /** Create a BitmapImage object from the specified image table with the specified foreground, and an alpha background
+     *
+     * @param table Pointer to the image table.
+     * @param fg_color The foreground color as a 32-bit ARGB value.
+     */
+    BitmapImage(const char *table, unsigned int fg_color);
+
+    /** Create a BitmapImage object from the specified image table with the specified foreground and background colors
+     *
+     * @param table Pointer to the image table.
+     * @param fg_color The foreground color as a 32-bit ARGB value.
+     * @param bg_color The background color as a 32-bit ARGB value.
+     */
+    BitmapImage(const char *table, unsigned int fg_color, unsigned int bg_color);
+
+    /** Get the pixel at the specified coordinates
+    *
+    * @param x The X coordinate.
+    * @param y The Y coordinate.
+    *
+    * @returns The color of the pixel as a 32-bit ARGB value.
+    */
+    virtual unsigned int pixel(int x, int y);
+
+    /** Get the foreground color
+    *
+    * @returns The foreground color as a 32-bit ARGB value.
+    */
+    unsigned int foreground(void);
+
+    /** Set the foreground color
+    *
+    * @param c The new foreground color as a 32-bit ARGB value.
+    */
+    void foreground(unsigned int c);
+
+    /** Get the background color
+    *
+    * @returns The background color as a 32-bit ARGB value.
+    */
+    unsigned int background(void);
+
+    /** Set the background color
+    *
+    * @param c The new background color as a 32-bit ARGB value.
+    */
+    void background(unsigned int c);
+
+protected:
+    //Pointer to the image table
+    const char *m_ImageTable;
+
+    //The foreground and background colors
+    unsigned int m_FgColor, m_BgColor;
+
+    int bytesPerLine(void);
+};
+
+#endif