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Basic calculator example to show the LPC4088 Experiment Base Board with a touch LCD from DisplayModule
Dependencies: DmTftLibrary mbed
Fork of dm_calc by
Button.cpp
- Committer:
- displaymodule
- Date:
- 2014-05-20
- Revision:
- 0:3713b01e72fe
- Child:
- 2:b17b19212e5a
File content as of revision 0:3713b01e72fe:
#include "Button.h" Button::Button(const char* caption, uint16_t x, uint16_t y, uint16_t width, uint16_t height) : _caption(caption), _x0(x), _y0(y), _x1(x+width), _y1(y+height), _bgCol(BLACK), _fgCol(WHITE), _bgColPressed(CYAN), _fgColPressed(BLACK) { _enabled = true; _pressed = false; _func = NULL; } void Button::setColors(uint16_t bg, uint16_t fg, uint16_t bgPressed, uint16_t fgPressed) { _bgCol = bg; _fgCol = fg; _bgColPressed = bgPressed; _fgColPressed = fgPressed; } bool Button::handle(uint16_t x, uint16_t y, bool pressed) { bool needsRepaint = false; if (_enabled) { if ((x >= _x0) && (y >= _y0) && (x <= _x1) && (y <= _y1)) { if (pressed && !_pressed) { // user pressing inside area needsRepaint = true; _pressed = true; } else if (!pressed && _pressed) { // user released inside area => click needsRepaint = true; _pressed = false; if (_func != NULL) { _func(_funcArg); } } } } return needsRepaint; } void Button::draw(DmTftBase* tft) { if (_pressed) { tft->fillRectangle(_x0+1, _y0+1, _x1-1, _y1-1, _bgColPressed); tft->drawRectangle(_x0, _y0, _x1, _y1, _fgColPressed); tft->setTextColor(_bgColPressed, _fgColPressed); tft->drawStringCentered(_x0, _y0, _x1-_x0, _y1-_y0, _caption); } else { tft->fillRectangle(_x0+1, _y0+1, _x1-1, _y1-1, _bgCol); tft->drawRectangle(_x0, _y0, _x1, _y1, _fgCol); tft->setTextColor(_bgCol, _fgCol); tft->drawStringCentered(_x0, _y0, _x1-_x0, _y1-_y0, _caption); } }