EwCheckBox.h

00001 
00002 #ifndef EWCHECKBOX_H
00003 #define EWCHECKBOX_H
00004 
00005 #include "EwPainter.h"
00006 #include "EwWindow.h"
00007 #include "EwFunctionPointer.h"
00008 
00009 #include "CHECKBOX.h"
00010 
00011 enum ewCheckBoxColorIndex_t {
00012     CheckBoxColorIndexDisabled = CHECKBOX_CI_DISABLED,
00013     CheckBoxColorIndexEnabled = CHECKBOX_CI_ENABLED,
00014 };
00015 
00016 enum ewCheckBoxBitmapIndex_t {
00017     CheckBoxBitmapInactiveUnchecked = CHECKBOX_BI_INACTIV_UNCHECKED,
00018     CheckBoxBitmapActiveUnchecked = CHECKBOX_BI_ACTIV_UNCHECKED,
00019     CheckBoxBitmapInactiveChecked = CHECKBOX_BI_INACTIV_CHECKED,
00020     CheckBoxBitmapActiveChecked = CHECKBOX_BI_ACTIV_CHECKED,
00021     CheckBoxBitmapInactive3State = CHECKBOX_BI_INACTIV_3STATE,
00022     CheckBoxBitmapActive3State = CHECKBOX_BI_ACTIV_3STATE
00023 };
00024 
00025 enum ewCheckBoxState_t {
00026     CheckBoxStateUnchecked = 0,
00027     CheckBoxStateChecked,
00028     CheckBoxStateTristate
00029 };
00030 
00031 /**
00032  * This is wrapper class for the emwin CHECKBOX interface.
00033  */
00034 class EwCheckBox : public EwWindow {
00035 public:
00036 
00037     EwCheckBox(EwWindow* parent = 0);
00038     EwCheckBox(int x, int y, int width, int height, EwWindow* parent = 0);
00039 
00040 
00041 
00042 
00043     ewCheckBoxState_t getState();
00044     void setState(ewCheckBoxState_t state);
00045 
00046     void setTristate(bool on = true);
00047     bool isTristate();
00048 
00049     void setText(const char* text);
00050     void getText(char* pBuf, int bufSz);
00051 
00052     void setBackgroundColor(ewColor_t c);
00053     void setBoxBackgroundColor(ewColor_t c, ewCheckBoxColorIndex_t idx);
00054     void setFont(const ewFont_t* pFont);
00055 
00056     void setTextAlign(ewTextAlign_t align);
00057     void setTextColor(ewColor_t c);
00058 
00059     void setFocusColor(ewColor_t c);
00060 
00061     void setImage(ewBitmap_t* pBitmap, ewCheckBoxBitmapIndex_t idx);
00062     void setSpacing(int32_t spacing);
00063 
00064     /**
00065      * Register a member function that will called when the checkbox
00066      * state has changed
00067      *
00068      * @param tptr pointer to the object to call the member function on
00069      * @param mptr pointer to the member function to be called
00070      */
00071     template<typename T>
00072     void setChangedListener(T* tptr, void (T::*mptr)(EwWindow* w)) {
00073         if((mptr != NULL) && (tptr != NULL)) {
00074             _changedListener.attach(tptr, mptr);
00075         }
00076     }
00077 
00078     /**
00079      * Register a function that will called when the checkbox
00080      * state has changed
00081      *
00082      * @param fptr A pointer to a void function that will be called
00083      * when the checkbox state has changed
00084      */
00085     void setChangedListener(void (*fptr)(EwWindow* w));
00086 
00087 
00088     static ewColor_t getDefaultBackgroundColor();
00089     static void setDefaultBackgroundColor(ewColor_t c);
00090     static const ewFont_t* getDefaultFont();
00091     static void setDefaultFont(const ewFont_t* pFont);
00092     static ewColor_t getDefaultTextColor();
00093     static void setDefaultTextColor(ewColor_t c);
00094     static void setDefaultFocusColor(ewColor_t c);
00095 
00096     static int32_t getDefaultSpacing();
00097     static void setDefaultSpacing(int32_t spacing);
00098 
00099     static void setDefaultImage(ewBitmap_t* pBitmap, ewCheckBoxBitmapIndex_t idx);
00100 
00101 
00102 private:
00103 
00104 
00105     bool _isTristate;
00106     EwFunctionPointer _changedListener;
00107 
00108     void init(int x, int y, int width, int height, EwWindow* parent);
00109     void handleStateChanged();
00110 
00111     static void _callback(WM_MESSAGE* pMsg, EwWindow* w);
00112 
00113 
00114 };
00115 
00116 #endif