Diff: EwGui.h

Revision:

0:316c181e9b65

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EwGui.h	Mon Dec 16 07:03:22 2013 +0000
@@ -0,0 +1,94 @@
+
+#ifndef EWGUI_H
+#define EWGUI_H
+
+#include "stdint.h"
+#include "GUI.h"
+
+/**
+ * This is the main class to get Segger's emwin library up-and-running
+ * with the mbed online tools.
+ *
+ * This class handles the porting/integration layer in emwin and the virtual
+ * methods must be implemented in a sub-class to handle such things as
+ * memory allocation, framebuffer association, display size, and touch
+ * events.
+ *
+ */
+class EwGui {
+public:
+
+
+    /**
+     * Returns the address to a memory block which may be used by emwin
+     * to allocate objects. The memory block returned will be given to emwin
+     * by calling GUI_ALLOC_AssignMemory.
+     */
+    virtual void* getMemoryBlockAddress() = 0;
+
+    /**
+     * Returns the size of the memory block returned by
+     * getMemoryBlockAddress().
+     */
+    virtual uint32_t getMemoryBlockSize() = 0;
+
+    /**
+     * Returns the width of the display.
+     */
+    virtual uint32_t getDisplayWidth() = 0;
+
+    /**
+     * Returns the height of the display.
+     */
+    virtual uint32_t getDisplayHeight() = 0;
+
+    /**
+     * Returns the address of the framebuffer (video RAM). This address will
+     * be given to emwin by a call to LCD_SetVRAMAddrEx.
+     */
+    virtual void* getFrameBufferAddress() = 0;
+
+    /**
+     * Get touch coordinates (if the display has a touch panel)
+     *
+     * @param x the x coordinate
+     * @param y the y coordinate
+     * $param z the z coordinate. If the value is > 0 the panel is touched.
+     */
+    virtual void getTouchValues(int32_t* x, int32_t* y, int32_t* z) = 0;
+
+    /**
+     * Must be called regularly for emwin to work properly
+     */
+    void exec();
+
+    /**
+     * Must be called regularly for touch events to be retrieved
+     */
+    void execTouch();
+
+    /**
+     * Returns the x coordinate of the latest touch event
+     */
+    int32_t getTouchX() {return _touchX;}
+
+    /**
+     * Returns the y coordinate of the latest touch event
+     */
+    int32_t getTouchY() {return _touchY;}
+
+protected:
+    EwGui();
+    void init();
+
+private:
+
+    bool _initialized;
+    bool _penIsDown;
+    int32_t _touchX;
+    int32_t _touchY;
+    GUI_PID_STATE _touchState;
+
+};
+
+#endif