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Dependents: lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI lpc4088_displaymodule_fs_aid ... more
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DMBasicGUI
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EmbeddedArtists AB
Clickable Class Reference
Clickable is an abstract base class for the Button and ImageButton. More...
#include <Clickable.h>
Inherited by Button, DigitButton, and ImageButton.
Public Member Functions | |
| Clickable (COLOR_T *fb, uint16_t x, uint16_t y, uint16_t width, uint16_t height) | |
| Creates a new clickable. | |
| void | setAction (void(*func)(uint32_t arg), uint32_t arg) |
| Set the function to call when clicked. | |
| bool | handle (uint16_t x, uint16_t y, bool pressed) |
| Process the touch event. | |
| bool | pressed () |
| Test if the button is held down (usable for repeated presses) | |
| virtual void | draw (COLOR_T *fb=0)=0 |
| Draws the button (on a new framebuffer if one is specified) | |
Detailed Description
Clickable is an abstract base class for the Button and ImageButton.
Definition at line 25 of file Clickable.h.
Constructor & Destructor Documentation
| Clickable | ( | COLOR_T * | fb, |
| uint16_t | x, | ||
| uint16_t | y, | ||
| uint16_t | width, | ||
| uint16_t | height | ||
| ) |
Creates a new clickable.
This clickable will use a SWIM window to draw on. That window will use part of the full size frame buffer to draw on.
- Parameters:
-
fb the frame buffer x the upper left corner of the button y the upper left corner of the button width the width of the button height the height of the button
Definition at line 23 of file Clickable.cpp.
Member Function Documentation
| virtual void draw | ( | COLOR_T * | fb = 0 ) |
[pure virtual] |
Draws the button (on a new framebuffer if one is specified)
- Parameters:
-
fb the frame buffer
Implemented in Button, DigitButton, and ImageButton.
| bool handle | ( | uint16_t | x, |
| uint16_t | y, | ||
| bool | pressed | ||
| ) |
Process the touch event.
This function will detect if and how the touch event affects it. If the event causes a click then the registered callback function is called before handle() returns.
The return value is to let the caller now if the button should be redrawn or not.
- Parameters:
-
x the touched x coordinate y the touched y coordinate pressed true if the user pressed the display
- Returns:
- true if the button should be redrawn false if the event did not affect the button
Definition at line 40 of file Clickable.cpp.
| bool pressed | ( | ) |
Test if the button is held down (usable for repeated presses)
- Returns:
- true if the button is pressed false otherwise
Definition at line 77 of file Clickable.h.
| void setAction | ( | void(*)(uint32_t arg) | func, |
| uint32_t | arg | ||
| ) |
Set the function to call when clicked.
Note that this function can be called with NULL as func to unregister the callback function.
- Parameters:
-
func the function to call arc the argument to pass to the function when calling
Definition at line 50 of file Clickable.h.
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