PlatformFont::CharInfo& MacCarbFont::getCharInfo(const UTF16 ch) const
{
// We use some static data here to avoid re allocating the same variable in a loop.
// this func is primarily called by GFont::loadCharInfo(),
Rect imageRect;
CGContextRef imageCtx;
U32 bitmapDataSize;
ATSUTextMeasurement tbefore, tafter, tascent, tdescent;
OSStatus err;
// 16 bit character buffer for the ATUSI calls.
// -- hey... could we cache this at the class level, set style and loc *once*,
// then just write to this buffer and clear the layout cache, to speed up drawing?
static UniChar chUniChar[1];
chUniChar[0] = ch;
// Declare and clear out the CharInfo that will be returned.
static PlatformFont::CharInfo c;
dMemset(&c, 0, sizeof(c));
// prep values for GFont::addBitmap()
c.bitmapIndex = 0;
c.xOffset = 0;
c.yOffset = 0;
// put the text in the layout.
// we've hardcoded a string length of 1 here, but this could work for longer strings... (hint hint)
// note: ATSUSetTextPointerLocation() also clears the previous cached layout information.
ATSUSetTextPointerLocation( mLayout, chUniChar, 0, 1, 1);
ATSUSetRunStyle( mLayout, mStyle, 0,1);
// get the typographic bounds. this tells us how characters are placed relative to other characters.
ATSUGetUnjustifiedBounds( mLayout, 0, 1, &tbefore, &tafter, &tascent, &tdescent);
c.xIncrement = FixedToInt(tafter);
// find out how big of a bitmap we'll need.
// as a bonus, we also get the origin where we should draw, encoded in the Rect.
ATSUMeasureTextImage( mLayout, 0, 1, 0, 0, &imageRect);
U32 xFudge = 2;
U32 yFudge = 1;
c.width = imageRect.right - imageRect.left + xFudge; // add 2 because small fonts don't always have enough room
c.height = imageRect.bottom - imageRect.top + yFudge;
c.xOrigin = imageRect.left; // dist x0 -> center line
c.yOrigin = -imageRect.top; // dist y0 -> base line
// kick out early if the character is undrawable
if( c.width == xFudge || c.height == yFudge)
return c;
// allocate a greyscale bitmap and clear it.
bitmapDataSize = c.width * c.height;
c.bitmapData = new U8[bitmapDataSize];
dMemset(c.bitmapData,0x00,bitmapDataSize);
// get a graphics context on the bitmap
imageCtx = CGBitmapContextCreate( c.bitmapData, c.width, c.height, 8, c.width, mColorSpace, kCGImageAlphaNone);
if(!imageCtx) {
Con::errorf("Error: failed to create a graphics context on the CharInfo bitmap! Drawing a blank block.");
c.xIncrement = c.width;
dMemset(c.bitmapData,0x0F,bitmapDataSize);
return c;
}
// Turn off antialiasing for monospaced console fonts. yes, this is cheating.
if(mSize < 12 && ( dStrstr(mName,"Monaco")!=NULL || dStrstr(mName,"Courier")!=NULL ))
CGContextSetShouldAntialias(imageCtx, false);
// Set up drawing options for the context.
// Since we're not going straight to the screen, we need to adjust accordingly
CGContextSetShouldSmoothFonts(imageCtx, false);
CGContextSetRenderingIntent(imageCtx, kCGRenderingIntentAbsoluteColorimetric);
CGContextSetInterpolationQuality( imageCtx, kCGInterpolationNone);
CGContextSetGrayFillColor( imageCtx, 1.0, 1.0);
CGContextSetTextDrawingMode( imageCtx, kCGTextFill);
// tell ATSUI to substitute fonts as needed for missing glyphs
ATSUSetTransientFontMatching(mLayout, true);
// set up three parrallel arrays for setting up attributes.
// this is how most options in ATSUI are set, by passing arrays of options.
ATSUAttributeTag theTags[] = { kATSUCGContextTag };
ByteCount theSizes[] = { sizeof(CGContextRef) };
ATSUAttributeValuePtr theValues[] = { &imageCtx };
// bind the layout to the context.
ATSUSetLayoutControls( mLayout, 1, theTags, theSizes, theValues );
// Draw the character!
int yoff = c.height < 3 ? 1 : 0; // kludge for 1 pixel high characters, such as '-' and '_'
int xoff = 1;
err = ATSUDrawText( mLayout, 0, 1, IntToFixed(-imageRect.left + xoff), IntToFixed(imageRect.bottom + yoff ) );
CGContextRelease(imageCtx);
if(err != noErr) {
Con::errorf("Error: could not draw the character! Drawing a blank box.");
dMemset(c.bitmapData,0x0F,bitmapDataSize);
}
#if TORQUE_DEBUG
// Con::printf("Font Metrics: Rect = %2i %2i %2i %2i Char= %C, 0x%x Size= %i, Baseline= %i, Height= %i",imageRect.top, imageRect.bottom, imageRect.left, imageRect.right,ch,ch, mSize,mBaseline, mHeight);
// Con::printf("Font Bounds: left= %2i right= %2i Char= %C, 0x%x Size= %i",FixedToInt(tbefore), FixedToInt(tafter), ch,ch, mSize);
#endif
return c;
}
void GraphicsContext::strokeArc(const IntRect& rect, int startAngle, int angleSpan)
{
if (paintingDisabled() || strokeStyle() == NoStroke || strokeThickness() <= 0.0f || !strokeColor().alpha())
return;
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextSetShouldAntialias(context, false);
int x = rect.x();
int y = rect.y();
float w = (float)rect.width();
float h = (float)rect.height();
float scaleFactor = h / w;
float reverseScaleFactor = w / h;
if (w != h)
scale(FloatSize(1, scaleFactor));
float hRadius = w / 2;
float vRadius = h / 2;
float fa = startAngle;
float falen = fa + angleSpan;
float start = -fa * M_PI/180;
float end = -falen * M_PI/180;
CGContextAddArc(context, x + hRadius, (y + vRadius) * reverseScaleFactor, hRadius, start, end, true);
if (w != h)
scale(FloatSize(1, reverseScaleFactor));
float width = strokeThickness();
int patWidth = 0;
switch (strokeStyle()) {
case DottedStroke:
patWidth = (int)(width / 2);
break;
case DashedStroke:
patWidth = 3 * (int)(width / 2);
break;
default:
break;
}
CGContextSaveGState(context);
if (patWidth) {
// Example: 80 pixels with a width of 30 pixels.
// Remainder is 20. The maximum pixels of line we could paint
// will be 50 pixels.
int distance;
if (hRadius == vRadius)
distance = (int)(M_PI * hRadius) / 2;
else // We are elliptical and will have to estimate the distance
distance = (int)(M_PI * sqrt((hRadius * hRadius + vRadius * vRadius) / 2)) / 2;
int remainder = distance % patWidth;
int coverage = distance - remainder;
int numSegments = coverage / patWidth;
float patternOffset = 0;
// Special case 1px dotted borders for speed.
if (patWidth == 1)
patternOffset = 1.0;
else {
bool evenNumberOfSegments = numSegments % 2 == 0;
if (remainder)
evenNumberOfSegments = !evenNumberOfSegments;
if (evenNumberOfSegments) {
if (remainder) {
patternOffset += patWidth - remainder;
patternOffset += remainder / 2;
} else
patternOffset = patWidth / 2;
} else {
if (remainder)
patternOffset = (patWidth - remainder) / 2;
}
}
const CGFloat dottedLine[2] = { patWidth, patWidth };
CGContextSetLineDash(context, patternOffset, dottedLine, 2);
}
CGContextStrokePath(context);
CGContextRestoreGState(context);
CGContextRestoreGState(context);
}
static void drawGDIGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer,
int from, int numGlyphs, const FloatPoint& point)
{
Color fillColor = graphicsContext->fillColor();
bool drawIntoBitmap = false;
TextDrawingModeFlags drawingMode = graphicsContext->textDrawingMode();
if (drawingMode == TextModeFill) {
if (!fillColor.alpha())
return;
drawIntoBitmap = fillColor.alpha() != 255 || graphicsContext->inTransparencyLayer();
if (!drawIntoBitmap) {
FloatSize offset;
float blur;
Color color;
ColorSpace shadowColorSpace;
graphicsContext->getShadow(offset, blur, color, shadowColorSpace);
drawIntoBitmap = offset.width() || offset.height() || blur;
}
}
// We have to convert CG's two-dimensional floating point advances to just horizontal integer advances.
Vector<int, 2048> gdiAdvances;
int totalWidth = 0;
for (int i = 0; i < numGlyphs; i++) {
gdiAdvances.append(lroundf(glyphBuffer.advanceAt(from + i)));
totalWidth += gdiAdvances[i];
}
HDC hdc = 0;
OwnPtr<GraphicsContext::WindowsBitmap> bitmap;
IntRect textRect;
if (!drawIntoBitmap)
hdc = graphicsContext->getWindowsContext(textRect, true, false);
if (!hdc) {
drawIntoBitmap = true;
// We put slop into this rect, since glyphs can overflow the ascent/descent bounds and the left/right edges.
// FIXME: Can get glyphs' optical bounds (even from CG) to get this right.
const FontMetrics& fontMetrics = font->fontMetrics();
int lineGap = fontMetrics.lineGap();
textRect = IntRect(point.x() - (fontMetrics.ascent() + fontMetrics.descent()) / 2,
point.y() - fontMetrics.ascent() - lineGap,
totalWidth + fontMetrics.ascent() + fontMetrics.descent(),
fontMetrics.lineSpacing());
bitmap = graphicsContext->createWindowsBitmap(textRect.size());
memset(bitmap->buffer(), 255, bitmap->bufferLength());
hdc = bitmap->hdc();
XFORM xform;
xform.eM11 = 1.0f;
xform.eM12 = 0.0f;
xform.eM21 = 0.0f;
xform.eM22 = 1.0f;
xform.eDx = -textRect.x();
xform.eDy = -textRect.y();
SetWorldTransform(hdc, &xform);
}
SelectObject(hdc, font->platformData().hfont());
// Set the correct color.
if (drawIntoBitmap)
SetTextColor(hdc, RGB(0, 0, 0));
else
SetTextColor(hdc, RGB(fillColor.red(), fillColor.green(), fillColor.blue()));
SetBkMode(hdc, TRANSPARENT);
SetTextAlign(hdc, TA_LEFT | TA_BASELINE);
// Uniscribe gives us offsets to help refine the positioning of combining glyphs.
FloatSize translation = glyphBuffer.offsetAt(from);
if (translation.width() || translation.height()) {
XFORM xform;
xform.eM11 = 1.0;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = 1.0;
xform.eDx = translation.width();
xform.eDy = translation.height();
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
}
if (drawingMode == TextModeFill) {
XFORM xform;
xform.eM11 = 1.0;
xform.eM12 = 0;
xform.eM21 = font->platformData().syntheticOblique() ? -tanf(syntheticObliqueAngle * piFloat / 180.0f) : 0;
xform.eM22 = 1.0;
xform.eDx = point.x();
xform.eDy = point.y();
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data());
if (font->syntheticBoldOffset()) {
xform.eM21 = 0;
xform.eDx = font->syntheticBoldOffset();
xform.eDy = 0;
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data());
}
} else {
XFORM xform;
GetWorldTransform(hdc, &xform);
AffineTransform hdcTransform(xform.eM11, xform.eM21, xform.eM12, xform.eM22, xform.eDx, xform.eDy);
CGAffineTransform initialGlyphTransform = hdcTransform.isInvertible() ? hdcTransform.inverse() : CGAffineTransformIdentity;
if (font->platformData().syntheticOblique())
initialGlyphTransform = CGAffineTransformConcat(initialGlyphTransform, CGAffineTransformMake(1, 0, tanf(syntheticObliqueAngle * piFloat / 180.0f), 1, 0, 0));
initialGlyphTransform.tx = 0;
initialGlyphTransform.ty = 0;
CGContextRef cgContext = graphicsContext->platformContext();
CGContextSaveGState(cgContext);
BOOL fontSmoothingEnabled = false;
SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &fontSmoothingEnabled, 0);
CGContextSetShouldAntialias(cgContext, fontSmoothingEnabled);
CGContextScaleCTM(cgContext, 1.0, -1.0);
CGContextTranslateCTM(cgContext, point.x() + glyphBuffer.offsetAt(from).width(), -(point.y() + glyphBuffer.offsetAt(from).height()));
for (unsigned i = 0; i < numGlyphs; ++i) {
RetainPtr<CGPathRef> glyphPath(AdoptCF, createPathForGlyph(hdc, glyphBuffer.glyphAt(from + i)));
CGContextSaveGState(cgContext);
CGContextConcatCTM(cgContext, initialGlyphTransform);
if (drawingMode & TextModeFill) {
CGContextAddPath(cgContext, glyphPath.get());
CGContextFillPath(cgContext);
if (font->syntheticBoldOffset()) {
CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0);
CGContextAddPath(cgContext, glyphPath.get());
CGContextFillPath(cgContext);
CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0);
}
}
if (drawingMode & TextModeStroke) {
CGContextAddPath(cgContext, glyphPath.get());
CGContextStrokePath(cgContext);
if (font->syntheticBoldOffset()) {
CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0);
CGContextAddPath(cgContext, glyphPath.get());
CGContextStrokePath(cgContext);
CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0);
}
}
CGContextRestoreGState(cgContext);
CGContextTranslateCTM(cgContext, gdiAdvances[i], 0);
}
CGContextRestoreGState(cgContext);
}
if (drawIntoBitmap) {
UInt8* buffer = bitmap->buffer();
unsigned bufferLength = bitmap->bufferLength();
for (unsigned i = 0; i < bufferLength; i += 4) {
// Use green, which is always in the middle.
UInt8 alpha = (255 - buffer[i + 1]) * fillColor.alpha() / 255;
buffer[i] = fillColor.blue();
buffer[i + 1] = fillColor.green();
buffer[i + 2] = fillColor.red();
buffer[i + 3] = alpha;
}
graphicsContext->drawWindowsBitmap(bitmap.get(), textRect.location());
} else
graphicsContext->releaseWindowsContext(hdc, textRect, true, false);
}
// This is only used to draw borders.
void GraphicsContext::drawLine(const IntPoint& point1, const IntPoint& point2)
{
if (paintingDisabled())
return;
if (strokeStyle() == NoStroke || !strokeColor().alpha())
return;
float width = strokeThickness();
FloatPoint p1 = point1;
FloatPoint p2 = point2;
bool isVerticalLine = (p1.x() == p2.x());
// For odd widths, we add in 0.5 to the appropriate x/y so that the float arithmetic
// works out. For example, with a border width of 3, KHTML will pass us (y1+y2)/2, e.g.,
// (50+53)/2 = 103/2 = 51 when we want 51.5. It is always true that an even width gave
// us a perfect position, but an odd width gave us a position that is off by exactly 0.5.
if (strokeStyle() == DottedStroke || strokeStyle() == DashedStroke) {
if (isVerticalLine) {
p1.move(0, width);
p2.move(0, -width);
} else {
p1.move(width, 0);
p2.move(-width, 0);
}
}
if (((int)width) % 2) {
if (isVerticalLine) {
// We're a vertical line. Adjust our x.
p1.move(0.5, 0);
p2.move(0.5, 0);
} else {
// We're a horizontal line. Adjust our y.
p1.move(0, 0.5);
p2.move(0, 0.5);
}
}
int patWidth = 0;
switch (strokeStyle()) {
case NoStroke:
case SolidStroke:
break;
case DottedStroke:
patWidth = (int)width;
break;
case DashedStroke:
patWidth = 3 * (int)width;
break;
}
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextSetShouldAntialias(context, false);
if (patWidth) {
// Do a rect fill of our endpoints. This ensures we always have the
// appearance of being a border. We then draw the actual dotted/dashed line.
setCGFillColor(context, strokeColor()); // The save/restore make it safe to mutate the fill color here without setting it back to the old color.
if (isVerticalLine) {
CGContextFillRect(context, FloatRect(p1.x() - width / 2, p1.y() - width, width, width));
CGContextFillRect(context, FloatRect(p2.x() - width / 2, p2.y(), width, width));
} else {
CGContextFillRect(context, FloatRect(p1.x() - width, p1.y() - width / 2, width, width));
CGContextFillRect(context, FloatRect(p2.x(), p2.y() - width / 2, width, width));
}
// Example: 80 pixels with a width of 30 pixels.
// Remainder is 20. The maximum pixels of line we could paint
// will be 50 pixels.
int distance = (isVerticalLine ? (point2.y() - point1.y()) : (point2.x() - point1.x())) - 2*(int)width;
int remainder = distance % patWidth;
int coverage = distance - remainder;
int numSegments = coverage / patWidth;
float patternOffset = 0;
// Special case 1px dotted borders for speed.
if (patWidth == 1)
patternOffset = 1.0;
else {
bool evenNumberOfSegments = numSegments % 2 == 0;
if (remainder)
evenNumberOfSegments = !evenNumberOfSegments;
if (evenNumberOfSegments) {
if (remainder) {
patternOffset += patWidth - remainder;
patternOffset += remainder / 2;
} else
patternOffset = patWidth / 2;
} else {
if (remainder)
patternOffset = (patWidth - remainder)/2;
}
}
const CGFloat dottedLine[2] = { patWidth, patWidth };
CGContextSetLineDash(context, patternOffset, dottedLine, 2);
}
CGContextBeginPath(context);
CGContextMoveToPoint(context, p1.x(), p1.y());
CGContextAddLineToPoint(context, p2.x(), p2.y());
CGContextStrokePath(context);
CGContextRestoreGState(context);
}
static cairo_int_status_t
_cairo_quartz_init_glyph_surface (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph)
{
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
cairo_image_surface_t *surface = NULL;
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
int advance;
CGRect bbox;
double width, height;
double emscale = CGFontGetUnitsPerEmPtr (font_face->cgFont);
CGContextRef cgContext = NULL;
CGAffineTransform textMatrix;
CGRect glyphRect, glyphRectInt;
CGPoint glyphOrigin;
//fprintf (stderr, "scaled_glyph: %p surface: %p\n", scaled_glyph, scaled_glyph->surface);
/* Create blank 2x2 image if we don't have this character.
* Maybe we should draw a better missing-glyph slug or something,
* but this is ok for now.
*/
if (glyph == INVALID_GLYPH) {
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, 2, 2);
status = cairo_surface_status ((cairo_surface_t *) surface);
if (status)
return status;
_cairo_scaled_glyph_set_surface (scaled_glyph,
&font->base,
surface);
return CAIRO_STATUS_SUCCESS;
}
if (!CGFontGetGlyphAdvancesPtr (font_face->cgFont, &glyph, 1, &advance) ||
!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
/* scale(1,-1) * font->base.scale * scale(1,-1) */
textMatrix = CGAffineTransformMake (font->base.scale.xx,
-font->base.scale.yx,
-font->base.scale.xy,
font->base.scale.yy,
0, -0);
glyphRect = CGRectMake (bbox.origin.x / emscale,
bbox.origin.y / emscale,
bbox.size.width / emscale,
bbox.size.height / emscale);
glyphRect = CGRectApplyAffineTransform (glyphRect, textMatrix);
/* Round the rectangle outwards, so that we don't have to deal
* with non-integer-pixel origins or dimensions.
*/
glyphRectInt = CGRectIntegral (glyphRect);
#if 0
fprintf (stderr, "glyphRect[o]: %f %f %f %f\n",
glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
fprintf (stderr, "glyphRectInt: %f %f %f %f\n",
glyphRectInt.origin.x, glyphRectInt.origin.y, glyphRectInt.size.width, glyphRectInt.size.height);
#endif
glyphOrigin = glyphRectInt.origin;
//textMatrix = CGAffineTransformConcat (textMatrix, CGAffineTransformInvert (ctm));
width = glyphRectInt.size.width;
height = glyphRectInt.size.height;
//fprintf (stderr, "glyphRect[n]: %f %f %f %f\n", glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
if (surface->base.status)
return surface->base.status;
if (surface->width != 0 && surface->height != 0) {
cgContext = CGBitmapContextCreate (surface->data,
surface->width,
surface->height,
8,
surface->stride,
NULL,
kCGImageAlphaOnly);
if (cgContext == NULL) {
cairo_surface_destroy (&surface->base);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
CGContextSetFont (cgContext, font_face->cgFont);
CGContextSetFontSize (cgContext, 1.0);
CGContextSetTextMatrix (cgContext, textMatrix);
switch (font->base.options.antialias) {
case CAIRO_ANTIALIAS_SUBPIXEL:
case CAIRO_ANTIALIAS_BEST:
CGContextSetShouldAntialias (cgContext, TRUE);
CGContextSetShouldSmoothFonts (cgContext, TRUE);
if (CGContextSetAllowsFontSmoothingPtr &&
!CGContextGetAllowsFontSmoothingPtr (cgContext))
CGContextSetAllowsFontSmoothingPtr (cgContext, TRUE);
break;
case CAIRO_ANTIALIAS_NONE:
CGContextSetShouldAntialias (cgContext, FALSE);
break;
case CAIRO_ANTIALIAS_GRAY:
case CAIRO_ANTIALIAS_GOOD:
case CAIRO_ANTIALIAS_FAST:
CGContextSetShouldAntialias (cgContext, TRUE);
CGContextSetShouldSmoothFonts (cgContext, FALSE);
break;
case CAIRO_ANTIALIAS_DEFAULT:
default:
/* Don't do anything */
break;
}
CGContextSetAlpha (cgContext, 1.0);
CGContextShowGlyphsAtPoint (cgContext, - glyphOrigin.x, - glyphOrigin.y, &glyph, 1);
CGContextRelease (cgContext);
}
cairo_surface_set_device_offset (&surface->base,
- glyphOrigin.x,
height + glyphOrigin.y);
_cairo_scaled_glyph_set_surface (scaled_glyph, &font->base, surface);
return status;
}
static cairo_int_status_t
_cairo_quartz_init_glyph_surface (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph)
{
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
cairo_image_surface_t *surface = NULL;
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
int advance;
CGRect bbox;
double width, height;
double xscale, yscale;
double emscale = CGFontGetUnitsPerEmPtr (font_face->cgFont);
CGColorSpaceRef gray;
CGContextRef cgContext = NULL;
CGAffineTransform textMatrix;
CGRect glyphRect, glyphRectInt;
CGPoint glyphOrigin;
//fprintf (stderr, "scaled_glyph: %p surface: %p\n", scaled_glyph, scaled_glyph->surface);
/* Create blank 2x2 image if we don't have this character.
* Maybe we should draw a better missing-glyph slug or something,
* but this is ok for now.
*/
if (glyph == INVALID_GLYPH) {
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, 2, 2);
status = cairo_surface_status ((cairo_surface_t *) surface);
if (status)
return status;
_cairo_scaled_glyph_set_surface (scaled_glyph,
&font->base,
surface);
return CAIRO_STATUS_SUCCESS;
}
if (!CGFontGetGlyphAdvancesPtr (font_face->cgFont, &glyph, 1, &advance) ||
!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
status = _cairo_matrix_compute_basis_scale_factors (&font->base.scale,
&xscale, &yscale, 1);
if (status)
return status;
textMatrix = CGAffineTransformMake (font->base.scale.xx,
-font->base.scale.yx,
-font->base.scale.xy,
font->base.scale.yy,
0.0f, 0.0f);
glyphRect = CGRectMake (bbox.origin.x / emscale,
bbox.origin.y / emscale,
bbox.size.width / emscale,
bbox.size.height / emscale);
glyphRect = CGRectApplyAffineTransform (glyphRect, textMatrix);
/* Round the rectangle outwards, so that we don't have to deal
* with non-integer-pixel origins or dimensions.
*/
glyphRectInt = CGRectIntegral (glyphRect);
#if 0
fprintf (stderr, "glyphRect[o]: %f %f %f %f\n",
glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
fprintf (stderr, "glyphRectInt: %f %f %f %f\n",
glyphRectInt.origin.x, glyphRectInt.origin.y, glyphRectInt.size.width, glyphRectInt.size.height);
#endif
glyphOrigin = glyphRectInt.origin;
//textMatrix = CGAffineTransformConcat (textMatrix, CGAffineTransformInvert (ctm));
width = glyphRectInt.size.width;
height = glyphRectInt.size.height;
//fprintf (stderr, "glyphRect[n]: %f %f %f %f\n", glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
if (surface->base.status)
return surface->base.status;
gray = CGColorSpaceCreateDeviceGray ();
cgContext = CGBitmapContextCreate (surface->data,
surface->width,
surface->height,
8,
surface->stride,
gray,
kCGImageAlphaNone);
CGColorSpaceRelease (gray);
CGContextSetFont (cgContext, font_face->cgFont);
CGContextSetFontSize (cgContext, 1.0);
CGContextSetTextMatrix (cgContext, textMatrix);
CGContextClearRect (cgContext, CGRectMake (0.0f, 0.0f, width, height));
if (font->base.options.antialias == CAIRO_ANTIALIAS_NONE)
CGContextSetShouldAntialias (cgContext, false);
CGContextSetRGBFillColor (cgContext, 1.0, 1.0, 1.0, 1.0);
CGContextShowGlyphsAtPoint (cgContext, - glyphOrigin.x, - glyphOrigin.y, &glyph, 1);
CGContextRelease (cgContext);
cairo_surface_set_device_offset (&surface->base,
- glyphOrigin.x,
height + glyphOrigin.y);
_cairo_scaled_glyph_set_surface (scaled_glyph, &font->base, surface);
return status;
}
QImage QFontEngineMac::alphaMapForGlyph(glyph_t glyph)
{
const glyph_metrics_t br = boundingBox(glyph);
QImage im(qRound(br.width)+2, qRound(br.height)+2, QImage::Format_RGB32);
im.fill(0);
CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB();
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
uint cgflags = kCGImageAlphaNoneSkipFirst;
#ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
cgflags |= kCGBitmapByteOrder32Host;
#endif
#else
CGImageAlphaInfo cgflags = kCGImageAlphaNoneSkipFirst;
#endif
CGContextRef ctx = CGBitmapContextCreate(im.bits(), im.width(), im.height(),
8, im.bytesPerLine(), colorspace,
cgflags);
CGColorSpaceRelease(colorspace);
CGContextSetFontSize(ctx, fontDef.pixelSize);
CGContextSetShouldAntialias(ctx, fontDef.pointSize > qt_antialiasing_threshold && !(fontDef.styleStrategy & QFont::NoAntialias));
CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx);
CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
CGAffineTransformConcat(cgMatrix, oldTextMatrix);
if (synthesisFlags & QFontEngine::SynthesizedItalic)
cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, tanf(14 * acosf(0) / 90), 1, 0, 0));
cgMatrix = CGAffineTransformConcat(cgMatrix, multiEngine->transform);
CGContextSetTextMatrix(ctx, cgMatrix);
CGContextSetRGBFillColor(ctx, 1, 1, 1, 1);
CGContextSetTextDrawingMode(ctx, kCGTextFill);
CGContextSetFont(ctx, cgFont);
qreal pos_x = -br.x.toReal()+1, pos_y = im.height()+br.y.toReal();
CGContextSetTextPosition(ctx, pos_x, pos_y);
CGSize advance;
advance.width = 0;
advance.height = 0;
CGGlyph cgGlyph = glyph;
CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
if (synthesisFlags & QFontEngine::SynthesizedBold) {
CGContextSetTextPosition(ctx, pos_x + 0.5 * lineThickness().toReal(), pos_y);
CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
}
CGContextRelease(ctx);
QImage indexed(im.width(), im.height(), QImage::Format_Indexed8);
QVector<QRgb> colors(256);
for (int i=0; i<256; ++i)
colors[i] = qRgba(0, 0, 0, i);
indexed.setColorTable(colors);
for (int y=0; y<im.height(); ++y) {
uint *src = (uint*) im.scanLine(y);
uchar *dst = indexed.scanLine(y);
for (int x=0; x<im.width(); ++x) {
*dst = qGray(*src);
++dst;
++src;
}
}
return indexed;
}
bool GCPVideoRenderer::OnWindowRefresh(FB::RefreshEvent* pEvt)
{
FB::CoreGraphicsDraw* pCgDrawEvt(static_cast<FB::CoreGraphicsDraw*>(pEvt));
CGContextRef pContext = pCgDrawEvt->context;
boost::mutex::scoped_lock winLock(m_winMutex);
const int stride = m_width*4;
const int frameBufferSize = m_height*stride;
static SInt32 osMajorVersion = 0;
static SInt32 osMinorVersion = 0;
static CGInterpolationQuality interpolationMode = kCGInterpolationNone;
if(0 == osMajorVersion || 0 == osMinorVersion)
{
if(noErr != Gestalt(gestaltSystemVersionMajor, &osMajorVersion))
{
osMajorVersion = 10;
}
if(noErr != Gestalt(gestaltSystemVersionMinor, &osMinorVersion))
{
osMinorVersion = 6;
}
if(10 <= osMajorVersion && 7 <= osMinorVersion)
{
interpolationMode = kCGInterpolationDefault;
}
}
if(NULL == pContext || NULL == m_pFrameBuffer)
{
return false;
}
int winWidth = pCgDrawEvt->bounds.right - pCgDrawEvt->bounds.left;
int winHeight = pCgDrawEvt->bounds.bottom - pCgDrawEvt->bounds.top;
if(winWidth<=1 || winHeight<=1)
return false;
CGContextSaveGState(pContext);
CGContextSetShouldAntialias(pContext, true);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGImageRef cgImage = CGImageCreate(m_width, m_height, 8, 32, stride, colorSpace,
kCGImageAlphaNoneSkipLast,
CGDataProviderCreateWithData(NULL,
m_pFrameBuffer,
frameBufferSize,
NULL),
NULL, false, kCGRenderingIntentDefault);
if(NULL == cgImage)
{
CGColorSpaceRelease(colorSpace);
CGContextRestoreGState(pContext);
return false;
}
CGContextSetInterpolationQuality(pContext, interpolationMode);
CGContextTranslateCTM(pContext, 0, winHeight);
CGContextScaleCTM(pContext, 1, -1);
CGContextDrawImage(pContext, CGRectMake(0, 0, winWidth, winHeight), cgImage);
CGImageRelease(cgImage);
CGColorSpaceRelease(colorSpace);
CGContextRestoreGState(pContext);
return true;
}
