File content as of revision 4:a73760d09423:

/*
 *  Copyright 2014 Embedded Artists AB
 *
 *  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.
 */

#include "ImageButton.h"
#include "mbed.h"
#include "DMBoard.h"

#include "lpc_swim_image.h"

ImageButton::ImageButton(COLOR_T* fb, uint16_t x, uint16_t y, uint16_t width, uint16_t height) :
  Clickable(fb, x, y, width, height)
{
  _imgUp.pixels = NULL;
  _imgDown.pixels = NULL;
}

ImageButton::~ImageButton()
{
  if (_imgUp.pixels != NULL) {
    free(_imgUp.pixels);
    _imgUp.pixels = NULL;
  }
  if (_imgDown.pixels != NULL) {
    free(_imgDown.pixels);
    _imgDown.pixels = NULL;
  }
}

bool ImageButton::loadImages(const char* imgUp, const char* imgDown)
{
  if (_imgUp.pixels != NULL) {
    free(_imgUp.pixels);
    _imgUp.pixels = NULL;
  }
  if (_imgDown.pixels != NULL) {
    free(_imgDown.pixels);
    _imgDown.pixels = NULL;
  }
  if (Image::decode(imgUp, Image::RES_16BIT, &_imgUp) != 0) {
    DMBoard::instance().logger()->printf("Failed to load %s\n", imgUp);
    return false;
  }
  if (imgDown != NULL) {
    if (Image::decode(imgDown, Image::RES_16BIT, &_imgDown) == 0) {
      DMBoard::instance().logger()->printf("Failed to load %s\n", imgDown);
      return false;
    }
  }
  return true;
}

bool ImageButton::loadImages(const unsigned char* imgUp, unsigned int imgUpSize, 
                             const unsigned char* imgDown, unsigned int imgDownSize)
{
  if (_imgUp.pixels != NULL) {
    free(_imgUp.pixels);
    _imgUp.pixels = NULL;
  }
  if (_imgDown.pixels != NULL) {
    free(_imgDown.pixels);
    _imgDown.pixels = NULL;
  }
  if (Image::decode(imgUp, imgUpSize, Image::RES_16BIT, &_imgUp) != 0) {
    DMBoard::instance().logger()->printf("Failed to load %s\n", imgUp);
    return false;
  }
  if (imgDown != NULL) {
    if (Image::decode(imgDown, imgDownSize, Image::RES_16BIT, &_imgDown) == 0) {
      DMBoard::instance().logger()->printf("Failed to load %s\n", imgDown);
      return false;
    }
  }
  return true;
}


void ImageButton::draw()
{
  if (_pressed) {
    if (_imgDown.pixels != NULL) {
      swim_put_image(&_win, _imgDown.pixels, _imgDown.width, _imgDown.height);
    }
  } else {
    if (_imgUp.pixels != NULL) {
      swim_put_image(&_win, _imgUp.pixels, _imgUp.width, _imgUp.height);
    }
  }
}