/**
* Creates an image with a gray gradient.
*/
Image* ScreenImageSwiper::createBackgroundGradient()
{
// Create gradient bitmap.
int *gradientBitmap = new int[16 * 16];
for (int i = 0; i < 16; ++i)
{
for (int j = 0; j<16; ++j)
{
int color = 0xFF - (i * 0xFF / 16);
gradientBitmap[i*16 + j] = color | (color << 8) | (color << 16);
}
}
// Create image with gradient.
MAHandle imageHandle = maCreatePlaceholder();
maCreateImageRaw(imageHandle, gradientBitmap, EXTENT(16, 16), 0);
delete gradientBitmap;
// Create image widget.
Image* imageWidget = new Image();
imageWidget->setImage(imageHandle);
imageWidget->setPosition(0, 0);
imageWidget->setSize(
MAW_CONSTANT_FILL_AVAILABLE_SPACE,
MAW_CONSTANT_FILL_AVAILABLE_SPACE);
// Tell image to stretch.
imageWidget->setProperty("scaleMode", "scaleXY");
return imageWidget;
}
void WidgetSkin::draw(int x, int y, int width, int height, eType type) {
MAHandle cached = 0;
// Calculate numTiles needed to be drawn, if they are many, we need to cache, otherwise draw directly...
int numTiles = calculateNumTiles(width, height);
if(!useCache || numTiles<100) {
drawDirect(x, y, width, height, type);
return;
}
CacheKey newKey = CacheKey(this, width, height, type);
cached = getFromCache(newKey);
// If we didn't find a cached widgetskin, let's generate one and save it in the cache.
if(!cached) {
// set malloc handler to null so that we can catch if we're out of heap and write directly to the screen then.
#ifndef MOSYNC_NATIVE
malloc_handler mh = set_malloc_handler(NULL);
#endif
int *data = new int[width*height];
if(!data) {
drawDirect(x, y, width, height, type);
return;
}
#ifndef MOSYNC_NATIVE
set_malloc_handler(mh);
#endif
drawToData(data, 0, 0, width, height, type);
CacheElement cacheElem;
flushCacheUntilNewImageFits(width*height);
cacheElem.image = maCreatePlaceholder();
if(maCreateImageRaw(cacheElem.image,data,EXTENT(width,height),1)!=RES_OK) {
maPanic(1, "Could not create raw image");
}
delete data;
cacheElem.lastUsed = maGetMilliSecondCount();
cached = cacheElem.image;
addToCache(newKey, cacheElem);
}
// Draw the cached widgetskin.
Gfx_drawImage(cached, x, y);
}
void testImageRawData() {
const unsigned int NUMCOLORS = sizeof(sColors)/sizeof(int);
unsigned int colors2[NUMCOLORS];
MAHandle testImg = maCreatePlaceholder();
printf("imageRawData\n");
int res = maCreateImageRaw(testImg, sColors, EXTENT(NUMCOLORS,1), 1);
assert("maCreateImageRaw", res == RES_OK);
MAExtent e1 = maGetImageSize(testImg);
assert("maGetImageSize", e1 == EXTENT(NUMCOLORS,1));
MARect rect = {0, 0, NUMCOLORS, 1};
maGetImageData(testImg, colors2, &rect, NUMCOLORS);
assert("image: createRaw then getData",
(memcmp(sColors, colors2, sizeof(sColors)) == 0)
);
}
