本文整理汇总了C++中BitmapPtr::GetBuffer方法的典型用法代码示例。如果您正苦于以下问题：C++ BitmapPtr::GetBuffer方法的具体用法？C++ BitmapPtr::GetBuffer怎么用？C++ BitmapPtr::GetBuffer使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类BitmapPtr的用法示例。
在下文中一共展示了BitmapPtr::GetBuffer方法的1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: GetCharacter
// use getBitmap = false to find out glyph x-advance without copying/rendering bitmap
GlyphSet::Character* GetCharacter(FT_Face face, FT_ULong charcode,
const unsigned int fieldSize, const unsigned int fieldPadding,
const Vector2& maxGlyphCell,
const bool renderBitmap, const bool highQuality)
{
FT_Glyph glyph = GetGlyph(face, charcode, FT_LOAD_DEFAULT|FT_LOAD_NO_AUTOHINT);
if(glyph == NULL)
{
// early out, if glyph is NULL
return NULL;
}
// scale factor for unit scaled glyphs
const float xScale = 1.0f / (face->size->metrics.x_scale / 65536.0f);
const float yScale = 1.0f / (face->size->metrics.y_scale / 65536.0f);
// create a new glyph-metric for the letter
GlyphMetrics glyphMetrics;
glyphMetrics.code = charcode;
glyphMetrics.quality = (highQuality ? 1 : 0);
glyphMetrics.xPosition = 0;
glyphMetrics.yPosition = 0;
// Set correct glyph size for underline
const uint32_t UNDERLINE_CHARACTER( 0x0332 );
if(charcode == UNDERLINE_CHARACTER)
{
float underlineBitmapWidth(64.f);
float underlineBitmapHeight( 8.f );
glyphMetrics.left = 0.f;
glyphMetrics.top = 0.f;
glyphMetrics.width = xScale * underlineBitmapWidth;
glyphMetrics.height = yScale * underlineBitmapHeight;
glyphMetrics.xAdvance = glyphMetrics.width;
}
else
{
// Regular glyphs
glyphMetrics.left = xScale * face->glyph->metrics.horiBearingX / 64.0f;
glyphMetrics.top = yScale * face->glyph->metrics.horiBearingY / 64.0f;
glyphMetrics.width = xScale * face->glyph->metrics.width / 64.0f;
glyphMetrics.height = yScale * face->glyph->metrics.height / 64.0f;
glyphMetrics.xAdvance = xScale * face->glyph->metrics.horiAdvance / 64.0f;
}
// TODO: Look at generating the distance field directly from the glyph vector outline
// instead of FreeType's scaled bitmap
BitmapPtr bitmapData = NULL;
// bitmap required?
if (renderBitmap)
{
// convert glyph to bitmap
if (glyph->format != FT_GLYPH_FORMAT_BITMAP)
{
FT_Error retVal = FT_Glyph_To_Bitmap(&glyph, FT_RENDER_MODE_NORMAL, 0, 1);
if(retVal != FT_Err_Ok)
{
DALI_LOG_WARNING("FT_Glyph_To_Bitmap failed %d\n", retVal);
FT_Done_Glyph(glyph);
return NULL;
}
}
// cast the FT_Glyph to a FT_BitmapGlyph
FT_BitmapGlyph bitmapGlyph = (FT_BitmapGlyph) glyph;
// access the underlying bitmap data
FT_Bitmap bitmap = bitmapGlyph->bitmap;
DALI_LOG_INFO(gLogFilter, Log::Verbose, "%s(%c %f %f %f %f %f %f) [%.2f %.2f %.2f %.2f %f %f]\n",
__FUNCTION__, (int)charcode,
glyphMetrics.left, glyphMetrics.top, glyphMetrics.width, glyphMetrics.height,
glyphMetrics.xAdvance, face->height/64.0f,
xScale * bitmapGlyph->left, yScale * bitmapGlyph->top, xScale * bitmap.width, yScale * bitmap.rows,
glyph->advance.x / 65536.0f * xScale, face->ascender / 64.0f);
// create a new bitmap for the glyph
if(charcode == UNDERLINE_CHARACTER)
{
float underlineBitmapWidth( glyphMetrics.width / xScale );
float underlineBitmapHeight( glyphMetrics.height / yScale );
const unsigned int underlineBitmapSize(underlineBitmapWidth*underlineBitmapHeight);
std::vector<unsigned char> underlineAlphaMap(underlineBitmapSize);
std::fill(underlineAlphaMap.begin(), underlineAlphaMap.end(), 0xff);
bitmapData = Integration::Bitmap::New(Bitmap::BITMAP_2D_PACKED_PIXELS, true);
bitmapData->GetPackedPixelsProfile()->ReserveBuffer(Pixel::A8, fieldSize, fieldSize);
GenerateDistanceFieldMap( &(*underlineAlphaMap.begin()), Vector2(underlineBitmapWidth, underlineBitmapHeight),
bitmapData->GetBuffer(), Vector2(fieldSize, fieldSize),
fieldPadding, Vector2( maxGlyphCell.width / xScale, maxGlyphCell.height / yScale ),
highQuality );
}
else
{
if (0 != (bitmap.width * bitmap.rows))
{
bitmapData = Integration::Bitmap::New(Bitmap::BITMAP_2D_PACKED_PIXELS, true);
bitmapData->GetPackedPixelsProfile()->ReserveBuffer(Pixel::A8, fieldSize, fieldSize);
//.........这里部分代码省略.........