本文整理汇总了C++中BitmapData类的典型用法代码示例。如果您正苦于以下问题：C++ BitmapData类的具体用法？C++ BitmapData怎么用？C++ BitmapData使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了BitmapData类的14个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ASFUNCTIONBODY
ASFUNCTIONBODY(BitmapData,_constructor)
{
uint32_t width;
uint32_t height;
bool transparent;
uint32_t fillColor;
BitmapData* th = obj->as<BitmapData>();
if(th->disposed)
throw Class<ArgumentError>::getInstanceS("Disposed BitmapData");
ARG_UNPACK(width, 0)(height, 0)(transparent, true)(fillColor, 0xFFFFFFFF);
ASObject::_constructor(obj,NULL,0);
//If the bitmap is already initialized, just return
if(width==0 || height==0 || !th->data.empty())
return NULL;
uint32_t *pixels=new uint32_t[width*height];
uint32_t c=GUINT32_TO_BE(fillColor); // fromRGB expects big endian data
if(!transparent)
{
uint8_t *alpha=reinterpret_cast<uint8_t *>(&c);
*alpha=0xFF;
}
for(uint32_t i=0; i<width*height; i++)
pixels[i]=c;
th->fromRGB(reinterpret_cast<uint8_t *>(pixels), width, height, ARGB32);
th->transparent=transparent;
return NULL;
}示例2: destData
void Image::desaturate()
{
if (isARGB() || isRGB())
{
const BitmapData destData (*this, 0, 0, getWidth(), getHeight(), BitmapData::readWrite);
if (isARGB())
{
for (int y = 0; y < destData.height; ++y)
{
uint8* p = destData.getLinePointer (y);
for (int x = 0; x < destData.width; ++x)
{
((PixelARGB*) p)->desaturate();
p += destData.pixelStride;
}
}
}
else
{
for (int y = 0; y < destData.height; ++y)
{
uint8* p = destData.getLinePointer (y);
for (int x = 0; x < destData.width; ++x)
{
((PixelRGB*) p)->desaturate();
p += destData.pixelStride;
}
}
}
}
}示例3: destData
void Image::setPixelAt (const int x, const int y, const Colour& colour)
{
if (isPositiveAndBelow (x, getWidth()) && isPositiveAndBelow (y, getHeight()))
{
const BitmapData destData (*this, x, y, 1, 1, BitmapData::writeOnly);
destData.setPixelColour (0, 0, colour);
}
}示例4: srcData
//==============================================================================
Colour Image::getPixelAt (const int x, const int y) const
{
if (isPositiveAndBelow (x, getWidth()) && isPositiveAndBelow (y, getHeight()))
{
const BitmapData srcData (*this, x, y, 1, 1);
return srcData.getPixelColour (0, 0);
}
return Colour();
}示例5: or_bitmapdata_dimensions
void or_bitmapdata_dimensions(ORBitmapDataRef bitmapdata, uint32_t *x,
uint32_t *y)
{
BitmapData *t = reinterpret_cast<BitmapData *>(bitmapdata);
if (x != NULL) {
*x = t->width();
}
if (y != NULL) {
*y = t->height();
}
}示例6: ASFUNCTIONBODY
ASFUNCTIONBODY(BitmapData,setPixel32)
{
BitmapData* th = obj->as<BitmapData>();
if(th->disposed)
throw Class<ArgumentError>::getInstanceS("Disposed BitmapData");
uint32_t x;
uint32_t y;
uint32_t color;
ARG_UNPACK(x)(y)(color);
th->setPixelPriv(x, y, color, th->transparent);
return NULL;
}示例7: jlimit
void Image::createSolidAreaMask (RectangleList& result, const float alphaThreshold) const
{
if (hasAlphaChannel())
{
const uint8 threshold = (uint8) jlimit (0, 255, roundToInt (alphaThreshold * 255.0f));
SparseSet<int> pixelsOnRow;
const BitmapData srcData (*this, 0, 0, getWidth(), getHeight());
for (int y = 0; y < srcData.height; ++y)
{
pixelsOnRow.clear();
const uint8* lineData = srcData.getLinePointer (y);
if (isARGB())
{
for (int x = 0; x < srcData.width; ++x)
{
if (((const PixelARGB*) lineData)->getAlpha() >= threshold)
pixelsOnRow.addRange (Range<int> (x, x + 1));
lineData += srcData.pixelStride;
}
}
else
{
for (int x = 0; x < srcData.width; ++x)
{
if (*lineData >= threshold)
pixelsOnRow.addRange (Range<int> (x, x + 1));
lineData += srcData.pixelStride;
}
}
for (int i = 0; i < pixelsOnRow.getNumRanges(); ++i)
{
const Range<int> range (pixelsOnRow.getRange (i));
result.add (Rectangle<int> (range.getStart(), y, range.getLength(), 1));
}
result.consolidate();
}
}
else
{
result.add (0, 0, getWidth(), getHeight());
}
}示例8: setTexture
void Bitmap::setTexture(TextureBase *texturebase)
{
BitmapData *originalbitmapdata = bitmapdata_;
TextureBase *originaltexturebase = texturebase_;
bitmapdata_ = NULL;
texturebase_ = texturebase;
texturebase_->ref();
setAnchorPoint(anchorx_, anchory_); // here setAnchorPoint updates geometry and bounds
if (originalbitmapdata)
originalbitmapdata->unref();
if (originaltexturebase)
originaltexturebase->unref();
}示例9: jassert
void Image::setPixelData (int x, int y, int w, int h,
const uint8* const sourcePixelData, const int sourceLineStride)
{
jassert (x >= 0 && y >= 0 && w > 0 && h > 0 && x + w <= getWidth() && y + h <= getHeight());
if (Rectangle<int>::intersectRectangles (x, y, w, h, 0, 0, getWidth(), getHeight()))
{
const BitmapData dest (*this, x, y, w, h, BitmapData::writeOnly);
for (int i = 0; i < h; ++i)
{
memcpy (dest.getLinePointer(i),
sourcePixelData + sourceLineStride * i,
w * dest.pixelStride);
}
}
}示例10: type
Image Image::convertedToFormat (PixelFormat newFormat) const
{
if (image == nullptr || newFormat == image->pixelFormat)
return *this;
const int w = image->width, h = image->height;
const ScopedPointer<ImageType> type (image->createType());
Image newImage (type->create (newFormat, w, h, false));
if (newFormat == SingleChannel)
{
if (! hasAlphaChannel())
{
newImage.clear (getBounds(), Colours::black);
}
else
{
const BitmapData destData (newImage, 0, 0, w, h, BitmapData::writeOnly);
const BitmapData srcData (*this, 0, 0, w, h);
for (int y = 0; y < h; ++y)
{
const PixelARGB* const src = (const PixelARGB*) srcData.getLinePointer (y);
uint8* const dst = destData.getLinePointer (y);
for (int x = 0; x < w; ++x)
dst[x] = src[x].getAlpha();
}
}
}
else if (image->pixelFormat == SingleChannel && newFormat == Image::ARGB)
{
const BitmapData destData (newImage, 0, 0, w, h, BitmapData::writeOnly);
const BitmapData srcData (*this, 0, 0, w, h);
for (int y = 0; y < h; ++y)
{
const PixelAlpha* const src = (const PixelAlpha*) srcData.getLinePointer (y);
PixelARGB* const dst = (PixelARGB*) destData.getLinePointer (y);
for (int x = 0; x < w; ++x)
dst[x].set (src[x]);
}
}
else
{
if (hasAlphaChannel())
newImage.clear (getBounds());
Graphics g (newImage);
g.drawImageAt (*this, 0, 0);
}
return newImage;
}示例11: newImage
Image Image::convertedToFormat (PixelFormat newFormat) const
{
if (image == nullptr || newFormat == image->format)
return *this;
const int w = image->width, h = image->height;
Image newImage (newFormat, w, h, false, image->getType());
if (newFormat == SingleChannel)
{
if (! hasAlphaChannel())
{
newImage.clear (getBounds(), Colours::black);
}
else
{
const BitmapData destData (newImage, 0, 0, w, h, BitmapData::writeOnly);
const BitmapData srcData (*this, 0, 0, w, h);
for (int y = 0; y < h; ++y)
{
const PixelARGB* src = (const PixelARGB*) srcData.getLinePointer(y);
uint8* dst = destData.getLinePointer (y);
for (int x = w; --x >= 0;)
{
*dst++ = src->getAlpha();
++src;
}
}
}
}
else
{
if (hasAlphaChannel())
newImage.clear (getBounds());
Graphics g (newImage);
g.drawImageAt (*this, 0, 0);
}
return newImage;
}示例12: LoadJPEG
//--------------------------------------------------------------------------------
BitmapData* LoadJPEG(const Path& in_file)
{
struct jpeg_decompress_struct cinfo;
struct my_error_mgr jerr;
FILE *infile;
JSAMPARRAY buffer;
FOPEN(&infile, in_file.GetData(), L("rb"));
if (infile == nullptr)
{
Assert(false);
return nullptr;
}
cinfo.err = jpeg_std_error(&jerr.pub);
jerr.pub.error_exit = my_error_exit;
if (setjmp(jerr.setjmp_buffer))
{
jpeg_destroy_decompress(&cinfo);
fclose(infile);
return nullptr;
}
jpeg_create_decompress(&cinfo);
jpeg_stdio_src(&cinfo, infile);
jpeg_read_header(&cinfo, true);
jpeg_start_decompress(&cinfo);
BufferFormat eFormat = BufferFormat::INVALID_FORMAT;
switch (cinfo.out_color_space)
{
case JCS_EXT_ABGR: eFormat = BufferFormat::RGBA_U32; break;
case JCS_EXT_BGRA: eFormat = BufferFormat::ARGB_U32; break;
case JCS_EXT_RGBA: eFormat = BufferFormat::ABGR_U32; break;
case JCS_RGB: eFormat = BufferFormat::BGR_U24; break;
case JCS_EXT_BGR: eFormat = BufferFormat::RGB_U24; break;
//case JCS_RGB565: eFormat = BufferFormat::R5G6B5_U16; break;
case JCS_GRAYSCALE: eFormat = BufferFormat::A_U8; break;
default:
Assert(false);
return nullptr;
}
BitmapData* pData = new BitmapData(cinfo.output_width, cinfo.output_height, eFormat);
buffer = (*cinfo.mem->alloc_sarray)((j_common_ptr)&cinfo, JPOOL_IMAGE, pData->GetBufferPitch(), 1);
while (cinfo.output_scanline < cinfo.output_height)
{
jpeg_read_scanlines(&cinfo, buffer, 1);
memcpy((u8*)&(pData->GetBuffer()[(cinfo.output_scanline-1) * pData->GetBufferPitch()]), buffer[0], pData->GetBufferPitch());
}
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
fclose(infile);
Assert(jerr.pub.num_warnings == 0);
return pData;
}示例13: jmin
void Image::moveImageSection (int dx, int dy,
int sx, int sy,
int w, int h)
{
if (dx < 0)
{
w += dx;
sx -= dx;
dx = 0;
}
if (dy < 0)
{
h += dy;
sy -= dy;
dy = 0;
}
if (sx < 0)
{
w += sx;
dx -= sx;
sx = 0;
}
if (sy < 0)
{
h += sy;
dy -= sy;
sy = 0;
}
const int minX = jmin (dx, sx);
const int minY = jmin (dy, sy);
w = jmin (w, getWidth() - jmax (sx, dx));
h = jmin (h, getHeight() - jmax (sy, dy));
if (w > 0 && h > 0)
{
const int maxX = jmax (dx, sx) + w;
const int maxY = jmax (dy, sy) + h;
const BitmapData destData (*this, minX, minY, maxX - minX, maxY - minY, BitmapData::readWrite);
uint8* dst = destData.getPixelPointer (dx - minX, dy - minY);
const uint8* src = destData.getPixelPointer (sx - minX, sy - minY);
const size_t lineSize = (size_t) (destData.pixelStride * w);
if (dy > sy)
{
while (--h >= 0)
{
const int offset = h * destData.lineStride;
memmove (dst + offset, src + offset, lineSize);
}
}
else if (dst != src)
{
while (--h >= 0)
{
memmove (dst, src, lineSize);
dst += destData.lineStride;
src += destData.lineStride;
}
}
}
}示例14: ASFUNCTIONBODY
ASFUNCTIONBODY(BitmapData,draw)
{
BitmapData* th = obj->as<BitmapData>();
if(th->disposed)
throw Class<ArgumentError>::getInstanceS("Disposed BitmapData");
_NR<ASObject> drawable;
_NR<Matrix> matrix;
_NR<ColorTransform> ctransform;
_NR<ASString> blendMode;
_NR<Rectangle> clipRect;
bool smoothing;
ARG_UNPACK (drawable) (matrix, NullRef) (ctransform, NullRef) (blendMode, NullRef)
(clipRect, NullRef) (smoothing, false);
if(!drawable->getClass() || !drawable->getClass()->isSubClass(InterfaceClass<IBitmapDrawable>::getClass()) )
throw Class<TypeError>::getInstanceS("Error #1034: Wrong type");
if(!ctransform.isNull() || !blendMode.isNull() || !clipRect.isNull() || smoothing)
LOG(LOG_NOT_IMPLEMENTED,"BitmapData.draw does not support many parameters");
if(drawable->is<BitmapData>())
{
BitmapData* data=drawable->as<BitmapData>();
//Compute the initial matrix, if any
MATRIX initialMatrix;
if(!matrix.isNull())
initialMatrix=matrix->getMATRIX();
CairoRenderContext ctxt(th->getData(), th->width, th->height);
//Blit the data while transforming it
ctxt.transformedBlit(initialMatrix, data->getData(),
data->getWidth(), data->getHeight(),
CairoRenderContext::FILTER_NONE);
}
else if(drawable->is<DisplayObject>())
{
//Create an InvalidateQueue to store all the hierarchy of objects that must be drawn
SoftwareInvalidateQueue queue;
DisplayObject* d=drawable->as<DisplayObject>();
d->requestInvalidation(&queue);
CairoRenderContext ctxt(th->getData(), th->width, th->height);
//Compute the initial matrix, if any
MATRIX initialMatrix;
if(!matrix.isNull())
initialMatrix=matrix->getMATRIX();
for(auto it=queue.queue.begin();it!=queue.queue.end();it++)
{
DisplayObject* target=(*it).getPtr();
//Get the drawable from each of the added objects
IDrawable* drawable=target->invalidate(d, initialMatrix);
if(drawable==NULL)
continue;
//Compute the matrix for this object
uint8_t* buf=drawable->getPixelBuffer();
//Construct a CachedSurface using the data
CachedSurface& surface=ctxt.allocateCustomSurface(target,buf);
surface.tex.width=drawable->getWidth();
surface.tex.height=drawable->getHeight();
surface.xOffset=drawable->getXOffset();
surface.yOffset=drawable->getYOffset();
delete drawable;
}
d->Render(ctxt, false);
}
else
LOG(LOG_NOT_IMPLEMENTED,"BitmapData.draw does not support " << drawable->toDebugString());
th->notifyUsers();
return NULL;
}