本文整理汇总了C++中bitmap_argb32::allocate方法的典型用法代码示例。如果您正苦于以下问题：C++ bitmap_argb32::allocate方法的具体用法？C++ bitmap_argb32::allocate怎么用？C++ bitmap_argb32::allocate使用的例子？那么恭喜您, 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bitmap_argb32的用法示例。
在下文中一共展示了bitmap_argb32::allocate方法的3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: font_get_bitmap
bool sdl_osd_interface::font_get_bitmap(osd_font font, unicode_char chnum, bitmap_argb32 &bitmap, INT32 &width, INT32 &xoffs, INT32 &yoffs)
{
UniChar uni_char;
CGGlyph glyph;
CTFontRef ct_font = (CTFontRef)font;
const CFIndex count = 1;
CGRect bounding_rect, success_rect;
CGContextRef context_ref;
if( chnum == ' ' )
{
uni_char = 'n';
CTFontGetGlyphsForCharacters( ct_font, &uni_char, &glyph, count );
success_rect = CTFontGetBoundingRectsForGlyphs( ct_font, kCTFontDefaultOrientation, &glyph, &bounding_rect, count );
uni_char = chnum;
CTFontGetGlyphsForCharacters( ct_font, &uni_char, &glyph, count );
}
else
{
uni_char = chnum;
CTFontGetGlyphsForCharacters( ct_font, &uni_char, &glyph, count );
success_rect = CTFontGetBoundingRectsForGlyphs( ct_font, kCTFontDefaultOrientation, &glyph, &bounding_rect, count );
}
if( CGRectEqualToRect( success_rect, CGRectNull ) == false )
{
size_t bitmap_width;
size_t bitmap_height;
bitmap_width = ceilf(bounding_rect.size.width * EXTRA_WIDTH);
bitmap_width = bitmap_width == 0 ? 1 : bitmap_width;
bitmap_height = ceilf( (CTFontGetAscent(ct_font) + CTFontGetDescent(ct_font) + CTFontGetLeading(ct_font)) * EXTRA_HEIGHT);
xoffs = yoffs = 0;
width = bitmap_width;
size_t bits_per_component;
CGColorSpaceRef color_space;
CGBitmapInfo bitmap_info = kCGBitmapByteOrder32Host | kCGImageAlphaPremultipliedFirst;
color_space = CGColorSpaceCreateDeviceRGB();
bits_per_component = 8;
bitmap.allocate(bitmap_width, bitmap_height);
context_ref = CGBitmapContextCreate( bitmap.raw_pixptr(0), bitmap_width, bitmap_height, bits_per_component, bitmap.rowpixels()*4, color_space, bitmap_info );
if( context_ref != NULL )
{
CGFontRef font_ref;
font_ref = CTFontCopyGraphicsFont( ct_font, NULL );
CGContextSetTextPosition(context_ref, -bounding_rect.origin.x*EXTRA_WIDTH, CTFontGetDescent(ct_font)+CTFontGetLeading(ct_font) );
CGContextSetRGBFillColor(context_ref, 1.0, 1.0, 1.0, 1.0);
CGContextSetFont( context_ref, font_ref );
CGContextSetFontSize( context_ref, POINT_SIZE );
CGContextShowGlyphs( context_ref, &glyph, count );
CGFontRelease( font_ref );
CGContextRelease( context_ref );
}
CGColorSpaceRelease( color_space );
}
return bitmap.valid();
}示例2: get_bitmap
//.........这里部分代码省略.........
run.glyphAdvances = &advanceWidth;
run.glyphOffsets = &offsets;
auto baseline_origin = D2D1::Point2F(BITMAP_PAD + abc.abcA().Dips() + 1, BITMAP_PAD + ascent.Dips());
target->DrawGlyphRun(
baseline_origin,
&run,
pWhiteBrush.Get(),
DWRITE_MEASURING_MODE_GDI_CLASSIC);
HR_RET0(target->EndDraw());
#ifdef DWRITE_DEBUGGING
// Save to file for debugging
SaveBitmap(wicBitmap.Get(), GUID_WICPixelFormatBlackWhite, L"C:\\temp\\ddraw_step1.bmp");
#endif
// characters are expected to be full-height
rectangle actbounds;
actbounds.min_y = BITMAP_PAD;
actbounds.max_y = BITMAP_PAD + charHeight.Dips() - 1;
// Lock the bitmap and get the data pointer
WICRect rect = { 0, 0, bmwidth, bmheight };
HR_RET0(wicBitmap->Lock(&rect, WICBitmapLockRead, lock.GetAddressOf()));
HR_RET0(lock->GetDataPointer(&cbData, static_cast<BYTE**>(&pixels)));
// determine the actual left of the character
for (actbounds.min_x = 0; actbounds.min_x < bmwidth; actbounds.min_x++)
{
BYTE *offs = pixels + actbounds.min_x;
UINT8 summary = 0;
for (int y = 0; y < bmheight; y++)
summary |= offs[y * bmwidth];
if (summary != 0)
{
break;
}
}
// determine the actual right of the character
// Start from the right edge, and move in until we find a pixel
for (actbounds.max_x = bmwidth - 1; actbounds.max_x >= 0; actbounds.max_x--)
{
BYTE *offs = pixels + actbounds.max_x;
UINT8 summary = 0;
// Go through the entire column and build a summary
for (int y = 0; y < bmheight; y++)
summary |= offs[y * bmwidth];
if (summary != 0)
{
break;
}
}
// allocate a new bitmap
if (actbounds.max_x >= actbounds.min_x && actbounds.max_y >= actbounds.min_y)
{
bitmap.allocate(actbounds.max_x + 1 - actbounds.min_x, actbounds.max_y + 1 - actbounds.min_y);
// copy the bits into it
for (int y = 0; y < bitmap.height(); y++)
{
UINT32 *dstrow = &bitmap.pix32(y);
UINT8 *srcrow = &pixels[(y + actbounds.min_y) * bmwidth];
for (int x = 0; x < bitmap.width(); x++)
{
int effx = x + actbounds.min_x;
dstrow[x] = rgb_t(srcrow[effx], 0xff, 0xff, 0xff);
}
}
// set the final offset values
xoffs = actbounds.min_x - (BITMAP_PAD + abc.abcA().Dips());
yoffs = actbounds.max_y - (BITMAP_PAD + ascent.Dips());
#ifdef DWRITE_DEBUGGING
SaveBitmap2(bitmap, L"C:\\temp\\dwrite_final.bmp");
#endif
}
BOOL success = bitmap.valid();
#ifdef DWRITE_DEBUGGING
osd_printf_debug(
"dwr: %s, c'%S' w%i x%i y%i asc%i dsc%i a%ib%ic%i\n",
success ? "Success" : "Error",
(WCHAR*)&chnum,
width,
xoffs,
yoffs,
ascent.Dips(),
descent.Dips(),
abc.abcA().Dips(),
abc.abcB().Dips(),
abc.abcC().Dips());
#endif
return success;
}示例3: get_bitmap
//.........这里部分代码省略.........
RGBQUAD col2 = info.bmiColors[1];
col1.rgbBlue = col1.rgbGreen = col1.rgbRed = 0x00;
col2.rgbBlue = col2.rgbGreen = col2.rgbRed = 0xff;
// create a DIB to render to
BYTE *bits;
HBITMAP dib = CreateDIBSection(dummyDC, &info, DIB_RGB_COLORS, reinterpret_cast<VOID **>(&bits), NULL, 0);
if (dib)
{
HGDIOBJ oldbitmap = SelectObject(dummyDC, dib);
// clear the bitmap
int rowbytes = bmwidth / 8;
memset(bits, 0, rowbytes * bmheight);
// now draw the character
WCHAR tempchar = chnum;
SetTextColor(dummyDC, RGB(0xff, 0xff, 0xff));
SetBkColor(dummyDC, RGB(0x00, 0x00, 0x00));
ExtTextOutW(dummyDC, 50 + abc.abcA, 50, ETO_OPAQUE, NULL, &tempchar, 1, NULL);
// characters are expected to be full-height
rectangle actbounds;
actbounds.min_y = 50;
actbounds.max_y = 50 + metrics.tmHeight - 1;
// determine the actual left of the character
for (actbounds.min_x = 0; actbounds.min_x < rowbytes; actbounds.min_x++)
{
BYTE *offs = bits + actbounds.min_x;
UINT8 summary = 0;
for (int y = 0; y < bmheight; y++)
summary |= offs[y * rowbytes];
if (summary != 0)
{
actbounds.min_x *= 8;
if (!(summary & 0x80)) actbounds.min_x++;
if (!(summary & 0xc0)) actbounds.min_x++;
if (!(summary & 0xe0)) actbounds.min_x++;
if (!(summary & 0xf0)) actbounds.min_x++;
if (!(summary & 0xf8)) actbounds.min_x++;
if (!(summary & 0xfc)) actbounds.min_x++;
if (!(summary & 0xfe)) actbounds.min_x++;
break;
}
}
// determine the actual right of the character
for (actbounds.max_x = rowbytes - 1; actbounds.max_x >= 0; actbounds.max_x--)
{
BYTE *offs = bits + actbounds.max_x;
UINT8 summary = 0;
for (int y = 0; y < bmheight; y++)
summary |= offs[y * rowbytes];
if (summary != 0)
{
actbounds.max_x *= 8;
if (summary & 0x7f) actbounds.max_x++;
if (summary & 0x3f) actbounds.max_x++;
if (summary & 0x1f) actbounds.max_x++;
if (summary & 0x0f) actbounds.max_x++;
if (summary & 0x07) actbounds.max_x++;
if (summary & 0x03) actbounds.max_x++;
if (summary & 0x01) actbounds.max_x++;
break;
}
}
// allocate a new bitmap
if (actbounds.max_x >= actbounds.min_x && actbounds.max_y >= actbounds.min_y)
{
bitmap.allocate(actbounds.max_x + 1 - actbounds.min_x, actbounds.max_y + 1 - actbounds.min_y);
// copy the bits into it
for (int y = 0; y < bitmap.height(); y++)
{
UINT32 *dstrow = &bitmap.pix32(y);
UINT8 *srcrow = &bits[(y + actbounds.min_y) * rowbytes];
for (int x = 0; x < bitmap.width(); x++)
{
int effx = x + actbounds.min_x;
dstrow[x] = ((srcrow[effx / 8] << (effx % 8)) & 0x80) ? rgb_t(0xff, 0xff, 0xff, 0xff) : rgb_t(0x00, 0xff, 0xff, 0xff);
}
}
// set the final offset values
xoffs = actbounds.min_x - (50 + abc.abcA);
yoffs = actbounds.max_y - (50 + metrics.tmAscent);
}
// de-select the font and release the DC
SelectObject(dummyDC, oldbitmap);
DeleteObject(dib);
}
SelectObject(dummyDC, oldfont);
DeleteDC(dummyDC);
return bitmap.valid();
}