DRAW_TEST_F(CGContextFlush, FillFlushMultipleDrawingCounters, WhiteBackgroundTest<>) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
static int sDrawCount = 5;
for (int i = 0; i < sDrawCount; ++i) {
_CGContextPushBeginDraw(context);
}
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
CGContextFillRect(context, bounds);
for (int i = 0; i < sDrawCount; ++i) {
// Multiple flushes should work.
CGContextFlush(context);
}
// Add some extra drawings
CGContextClearRect(context, bounds);
// We should still have red & clear should not of been executed.
unsigned char* dataPtr = static_cast<unsigned char*>(CGBitmapContextGetData(context));
ASSERT_NE(dataPtr, nullptr);
// Validate only the red fill rect is executed.
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0xff);
EXPECT_EQ(dataPtr[3], 0xff);
for (int i = 0; i < 3; ++i) {
// Multiple flushes should work.
CGContextFlush(context);
}
// validate clear
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0x00);
EXPECT_EQ(dataPtr[3], 0x00);
CGContextSetRGBStrokeColor(context, 0, 1, 0, 1);
CGContextStrokeRect(context, CGRectMake(100, 100, 200, 300));
// Still should be clear.
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0x00);
EXPECT_EQ(dataPtr[3], 0x00);
for (int i = 0; i < sDrawCount; ++i) {
_CGContextPopEndDraw(context);
}
}
DRAW_TEST_F(CGContextFlush, FillFlush, WhiteBackgroundTest<>) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
_CGContextPushBeginDraw(context);
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
CGContextFillRect(context, bounds);
// Flush the red fill rect
CGContextFlush(context);
CGContextSetRGBFillColor(context, 0, 0, 1, 1);
CGContextFillRect(context, CGRectMake(0, 0, 300, 300));
// We should still have red & blue rectangle should not show up.
unsigned char* dataPtr = static_cast<unsigned char*>(CGBitmapContextGetData(context));
ASSERT_NE(dataPtr, nullptr);
// Validate only the red fill rect is executed.
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0xff);
EXPECT_EQ(dataPtr[3], 0xff);
CGContextFlush(context);
// We should now see the blue fill rect
EXPECT_EQ(dataPtr[0], 0xff);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0x00);
EXPECT_EQ(dataPtr[3], 0xff);
// Add some extra drawings
CGContextClearRect(context, CGRectMake(100, 100, 200, 300));
CGPoint center = _CGRectGetCenter(bounds);
CGMutablePathRef concentricCirclesPath = CGPathCreateMutable();
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 50, 50 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 100, 100 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 150, 150 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 200, 200 }, center));
CGContextSetRGBFillColor(context, 1.0, 0.0, 0.0, 0.5);
CGContextSetRGBStrokeColor(context, 1.0, 0.0, 0.0, 1.0);
CGContextAddPath(context, concentricCirclesPath);
CGContextDrawPath(context, kCGPathFillStroke);
CGPathRelease(concentricCirclesPath);
_CGContextPopEndDraw(context);
}
static void Quartz_Mode(int mode, NewDevDesc *dd)
{
QuartzDesc *xd = (QuartzDesc*)dd->deviceSpecific;
if(mode == 0)
CGContextFlush( GetContext(xd) );
}
/* draw image to frame */
static void icvDrawImage( CvWindow* window )
{
Assert( window != 0 );
if( window->imageRef == 0 ) return;
CGContextRef myContext;
CvTrackbar* t;
CGRect rect;
Rect portrect;
int width = window->imageWidth;
int height = window->imageHeight;
GetWindowPortBounds(window->window, &portrect);
if( window->flags & CV_WINDOW_AUTOSIZE )
{
CGPoint origin = {0,0};
CGSize size = {portrect.right-portrect.left, portrect.bottom-portrect.top-window->trackbarheight};
rect.origin = origin; rect.size = size;
}
else
{
CGPoint origin = {0, portrect.bottom - height - window->trackbarheight};
CGSize size = {width, height};
rect.origin = origin; rect.size = size;
}
/* To be sybnchronous we are using this, better would be to susbcribe to the draw event and process whenever requested, we might save SOME CPU cycles*/
SetPortWindowPort (window->window);
QDBeginCGContext (GetWindowPort (window->window), &myContext);
CGContextSetInterpolationQuality (myContext, kCGInterpolationLow);
CGContextDrawImage(myContext,rect,window->imageRef);
CGContextFlush(myContext);// 4
QDEndCGContext (GetWindowPort(window->window), &myContext);// 5
}
void MCStack::redrawicon()
{
// MW-2005-07-18: It is possible for this to be called if window == NULL in which
// case bad things can happen - so don't let this occur.
if (iconid != 0 && window != NULL)
{
MCImage *iptr = (MCImage *)getobjid(CT_IMAGE, iconid);
if (iptr != NULL)
{
CGImageRef tdockimage;
CGrafPtr tport;
CGrafPtr curport;
CGContextRef context;
OSStatus theErr;
CGRect cgrect = CGRectMake(0,0,128,128);
GetPort( &curport);
OSErr err = CreateQDContextForCollapsedWindowDockTile((WindowPtr)window->handle.window, &tport);
if (err == noErr)
{
SetPort(tport);
CreateCGContextForPort(tport, &context);
tdockimage = iptr -> makeicon(128, 128);
CGContextDrawImage(context,cgrect,tdockimage);
if ( tdockimage )
CGImageRelease( tdockimage );
CGContextFlush(context);
CGContextRelease(context);
SetPort(curport);
ReleaseQDContextForCollapsedWindowDockTile((WindowPtr)window->handle.window, tport);
}
}
}
}
void wxOverlayImpl::EndDrawing( wxDC* dc)
{
wxDCImpl *impl = dc->GetImpl();
wxGCDCImpl *win_impl = wxDynamicCast(impl,wxGCDCImpl);
if (win_impl)
win_impl->SetGraphicsContext(NULL);
CGContextFlush( m_overlayContext );
}
// FIXME: Is it possible to merge getWindowsContext and createWindowsBitmap into a single API
// suitable for all clients?
HDC GraphicsContext::getWindowsContext(const IntRect& dstRect, bool supportAlphaBlend, bool mayCreateBitmap)
{
// FIXME: Should a bitmap be created also when a shadow is set?
if (mayCreateBitmap && inTransparencyLayer()) {
if (dstRect.isEmpty())
return 0;
// Create a bitmap DC in which to draw.
BITMAPINFO bitmapInfo;
bitmapInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bitmapInfo.bmiHeader.biWidth = dstRect.width();
bitmapInfo.bmiHeader.biHeight = dstRect.height();
bitmapInfo.bmiHeader.biPlanes = 1;
bitmapInfo.bmiHeader.biBitCount = 32;
bitmapInfo.bmiHeader.biCompression = BI_RGB;
bitmapInfo.bmiHeader.biSizeImage = 0;
bitmapInfo.bmiHeader.biXPelsPerMeter = 0;
bitmapInfo.bmiHeader.biYPelsPerMeter = 0;
bitmapInfo.bmiHeader.biClrUsed = 0;
bitmapInfo.bmiHeader.biClrImportant = 0;
void* pixels = 0;
HBITMAP bitmap = ::CreateDIBSection(NULL, &bitmapInfo, DIB_RGB_COLORS, &pixels, 0, 0);
if (!bitmap)
return 0;
HDC bitmapDC = ::CreateCompatibleDC(m_data->m_hdc);
::SelectObject(bitmapDC, bitmap);
// Fill our buffer with clear if we're going to alpha blend.
if (supportAlphaBlend) {
BITMAP bmpInfo;
GetObject(bitmap, sizeof(bmpInfo), &bmpInfo);
int bufferSize = bmpInfo.bmWidthBytes * bmpInfo.bmHeight;
memset(bmpInfo.bmBits, 0, bufferSize);
}
// Make sure we can do world transforms.
SetGraphicsMode(bitmapDC, GM_ADVANCED);
// Apply a translation to our context so that the drawing done will be at (0,0) of the bitmap.
XFORM xform;
xform.eM11 = 1.0f;
xform.eM12 = 0.0f;
xform.eM21 = 0.0f;
xform.eM22 = 1.0f;
xform.eDx = -dstRect.x();
xform.eDy = -dstRect.y();
::SetWorldTransform(bitmapDC, &xform);
return bitmapDC;
}
CGContextFlush(platformContext());
m_data->save();
return m_data->m_hdc;
}
PassRefPtr<Uint8ClampedArray> ImageBuffer::getPremultipliedImageData(const IntRect& rect, CoordinateSystem coordinateSystem) const
{
if (m_context->isAcceleratedContext()) {
CGContextFlush(context()->platformContext());
#if defined(BUILDING_ON_LION)
m_data.m_lastFlushTime = currentTimeMS();
#endif
}
return m_data.getData(rect, internalSize(), m_context->isAcceleratedContext(), false, coordinateSystem == LogicalCoordinateSystem ? m_resolutionScale : 1);
}
PassRefPtr<ByteArray> ImageBuffer::getPremultipliedImageData(const IntRect& rect) const
{
if (m_context->isAcceleratedContext()) {
CGContextFlush(context()->platformContext());
#if defined(BUILDING_ON_LION)
m_data.m_lastFlushTime = currentTimeMS();
#endif
}
return m_data.getData(rect, internalSize(), m_context->isAcceleratedContext(), false);
}
void MacDock::overlay(const QString& text)
{
if (text.isEmpty()) {
overlayed = false;
RestoreApplicationDockTileImage();
return;
}
// Create the context
CGContextRef context = BeginCGContextForApplicationDockTile();
if (!overlayed) {
overlayed = true;
// Add some subtle drop down shadow
// FIXME: Disabled because 10.2 doesn't support it
//CGSize s = { 2.0, -4.0 };
//CGContextSetShadow(context,s,5.0);
}
// Draw a circle
CGContextBeginPath(context);
CGContextAddArc(context, 95.0, 95.0, 25.0, 0.0, 2 * M_PI, true);
CGContextClosePath(context);
CGContextSetRGBFillColor(context, 1, 0.0, 0.0, 1);
CGContextFillPath(context);
// Set the clipping path to the same circle
CGContextBeginPath(context);
CGContextAddArc(context, 95.0, 95.0, 25.0, 0.0, 2 * M_PI, true);
CGContextClip(context);
// Remove drop shadow
// FIXME: Disabled because 10.2 doesn't support it
//CGSize s = { 0.0, -0.0 };
//CGContextSetShadowWithColor(context, s, 0, NULL);
// Select the appropriate font
CGContextSelectFont(context,DOCK_FONT_NAME, DOCK_FONT_SIZE, kCGEncodingMacRoman);
CGContextSetRGBFillColor(context, 1, 1, 1, 1);
// Draw the text invisible
CGPoint begin = CGContextGetTextPosition(context);
CGContextSetTextDrawingMode(context, kCGTextInvisible);
CGContextShowTextAtPoint(context, begin.x, begin.y, text.toStdString().c_str(), text.length());
CGPoint end = CGContextGetTextPosition(context);
// Draw the text
CGContextSetTextDrawingMode(context, kCGTextFill);
CGContextShowTextAtPoint(context, 95 - (end.x - begin.x)/2, 95 - 8, text.toStdString().c_str(), text.length());
// Cleanup
CGContextFlush(context);
EndCGContextForApplicationDockTile(context);
}
static Rboolean Quartz_Locator(double *x, double *y, NewDevDesc *dd)
{
EventRecord event;
SInt16 key;
Boolean gotEvent;
Boolean mouseClick = false;
Point myPoint;
WindowPtr window;
SInt16 partCode;
GrafPtr savePort;
Cursor arrow ;
QuartzDesc *xd = (QuartzDesc*)dd->deviceSpecific;
int useBeep = asLogical(GetOption(install("locatorBell"),
R_NilValue));
GetPort(&savePort);
SetPortWindowPort(xd->window);
SetThemeCursor(kThemeCrossCursor);
while(!mouseClick) {
gotEvent = WaitNextEvent( everyEvent, &event, 0, nil);
CGContextFlush( GetContext(xd) );
if (event.what == mouseDown) {
partCode = FindWindow(event.where, &window);
if ((window == (xd->window)) && (partCode == inContent)) {
myPoint = event.where;
GlobalToLocal(&myPoint);
*x = (double)(myPoint.h);
*y = (double)(myPoint.v);
if(useBeep)
SysBeep(1);
mouseClick = true;
}
}
if (event.what == keyDown) {
key = (event.message & charCodeMask);
if (key == 0x1b){ /* exits when the esc key is pressed */
SetPort(savePort);
SetThemeCursor(kThemeIBeamCursor);
return FALSE;
}
}
}
SetPort(savePort);
SetThemeCursor(kThemeIBeamCursor);
return TRUE;
}
static
OSStatus DrawWindow(
WindowRef windowRef )
{
OSStatus err = noErr;
DrawContextStruct *context;
// get the context from windowRef
context = (DrawContextStruct *) GetWRefCon( windowRef );
// skip any drawing if the context has not yet been initialized
if ( context->cgContext == NULL )
return err;
// we only need to do this if there are characters in the buffer. If there
// aren't any characters, then there's nothing to draw.
if ( context->characterCount > 0 )
{
// if there isn't a layout object, then we need to add one to the
// context
if ( context->layoutObject == NULL )
{
err = AddNewTextLayoutToContext( context );
require_noerr( err, DrawContext_err );
}
// based on the current options selection, either just draw a single
// line, or do the fancy glyph rotate stuff.
switch ( gOptionsMenuSelection )
{
case kOptionsMenuTextBurst:
err = DrawGlyphBurst( context );
require_noerr( err, DrawContext_err );
break;
case kOptionsMenuItemNone:
default:
err = DrawSingleLine( context );
require_noerr( err, DrawContext_err );
break;
}
// flush the CGContext
CGContextFlush( context->cgContext );
}
DrawContext_err:
return err;
}
void PoofItGood( Point centerPt )
{
CGRect box;
WindowRef window;
Rect bounds;
CGContextRef context;
CGImageRef image;
float windowWidth;
float windowHeight;
int i;
image = GetThePoofImage();
if ( image == NULL ) goto Bail;
windowWidth = CGImageGetWidth( image ) / NUMBER_OF_POOF_ANIM_FRAMES;
windowHeight = CGImageGetHeight( image );
// Start our animation bounds at the first item in the animation strip
box.origin.x = box.origin.y = 0;
box.size.width = CGImageGetWidth( image );
box.size.height = CGImageGetHeight( image );
bounds.top = centerPt.v - (SInt16)(windowHeight / 2);
bounds.left = centerPt.h - (SInt16)(windowWidth / 2);
bounds.bottom = bounds.top + (SInt16)windowHeight;
bounds.right = bounds.left + (SInt16)windowWidth;
CreateNewWindow( kOverlayWindowClass, 0, &bounds, &window );
CreateCGContextForPort( GetWindowPort( window ), &context );
ShowWindow( window );
for ( i = 1; i <= NUMBER_OF_POOF_ANIM_FRAMES; i++ )
{
CGContextClearRect( context, box );
CGContextDrawImage( context, box, image );
CGContextFlush( context );
Delay( EventTimeToTicks( POOF_ANIMATION_DELAY ), NULL );
box.origin.x -= windowWidth;
}
CGContextRelease( context );
CGImageRelease( image );
DisposeWindow( window );
Bail:
return;
}
static void
flushproc(void *a)
{
for(;;) {
if(needflush) {
drawqlock();
QDBeginCGContext(GetWindowPort(theWindow), &context);
CGContextFlush(context);
QDEndCGContext(GetWindowPort(theWindow), &context);
needflush = false;
drawqunlock();
}
usleep(33333);
}
}
GraphicsContext* ImageBuffer::context() const
{
#if defined(BUILDING_ON_LION)
// Force a flush if last flush was more than 20ms ago
if (m_context->isAcceleratedContext()) {
double elapsedTime = currentTimeMS() - m_data.m_lastFlushTime;
double maxFlushInterval = 20; // in ms
if (elapsedTime > maxFlushInterval) {
CGContextRef context = m_context->platformContext();
CGContextFlush(context);
m_data.m_lastFlushTime = currentTimeMS();
}
}
#endif
return m_context.get();
}
static void Quartz_NewPage(R_GE_gcontext *gc,
NewDevDesc *dd)
{
QuartzDesc *xd = (QuartzDesc*)dd->deviceSpecific;
CGPoint origin = {0.0, 0.0};
CGSize size;
CGRect area;
size.width = xd->windowWidth;
size.height = xd->windowHeight;
area.origin = origin;
area.size = size;
Quartz_Clip(0,size.width, 0, size.height, dd);
/*
* Paul to Stefano:
* Not sure what is intended here: looks like you are
* making sure that on a "new page" operation you clear
* the window -- filling the window with a "missing"
* colour wouldn't do the job so you use "white".
* We no longer deal with NA as a colour internally so
* I have changed this as follows:
* (i) if gc->fill is not opaque, then fill with white
* (to clear the window)
* (ii) fill with gc->fill
* (to produce the specified "background" which may or
* may not be transparent)
*/
if (!R_OPAQUE(gc->fill)) {
unsigned int tempcol = gc->fill;
gc->fill = R_RGB(255, 255, 255);
Quartz_SetFill(gc->fill, gc->gamma, dd);
CGContextFillRect( GetContext(xd), area);
gc->fill = tempcol;
}
Quartz_SetFill(gc->fill, gc->gamma, dd);
CGContextFillRect( GetContext(xd), area);
CGContextFlush( GetContext(xd) ); /* we need to flash it just now */
}
void QMacWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
{
Q_UNUSED(offset);
// Get a context for the widget.
#ifndef QT_MAC_USE_COCOA
CGContextRef context;
CGrafPtr port = GetWindowPort(qt_mac_window_for(widget));
QDBeginCGContext(port, &context);
#else
extern CGContextRef qt_mac_graphicsContextFor(QWidget *);
CGContextRef context = qt_mac_graphicsContextFor(widget);
#endif
CGContextRetain(context);
CGContextSaveGState(context);
// Flip context.
CGContextTranslateCTM(context, 0, widget->height());
CGContextScaleCTM(context, 1, -1);
// Clip to region.
const QVector<QRect> &rects = rgn.rects();
for (int i = 0; i < rects.size(); ++i) {
const QRect &rect = rects.at(i);
CGContextAddRect(context, CGRectMake(rect.x(), rect.y(), rect.width(), rect.height()));
}
CGContextClip(context);
// Draw the image onto the window.
const CGRect dest = CGRectMake(0, 0, widget->width(), widget->height());
const CGImageRef image = d_ptr->device.toMacCGImageRef();
qt_mac_drawCGImage(context, &dest, image);
CFRelease(image);
// Restore context.
CGContextRestoreGState(context);
#ifndef QT_MAC_USE_COCOA
QDEndCGContext(port, &context);
#else
CGContextFlush(context);
#endif
CGContextRelease(context);
}
static pascal OSStatus OverlayWindowEventHandlerProc( EventHandlerCallRef inCallRef, EventRef inEvent, void* inUserData )
{
#pragma unused( inCallRef )
Rect windowRect;
CGRect box;
CGContextRef cgContext;
UInt32 eventKind = GetEventKind( inEvent );
UInt32 eventClass = GetEventClass( inEvent );
OSStatus err = eventNotHandledErr;
WindowStorage *windowStorage = (WindowStorage*) inUserData;
switch ( eventClass )
{
case kEventClassWindow:
if ( eventKind == kEventWindowClose )
{
windowStorage->overlayWindow = NULL; // Let the default handler DisposeWindow() for us, just set our WindowRef to NULL
}
else if ( (eventKind == kEventWindowBoundsChanged) || (eventKind == kEventWindowShown) ) // Draw the overlay window
{
GetWindowPortBounds( windowStorage->overlayWindow, &windowRect );
//box.origin.x = box.origin.y = 0;
//box.size.width = windowRect.right - windowRect.left;
//box.size.height = windowRect.bottom - windowRect.top;
box = CGRectMake( 0, 0, windowRect.right - windowRect.left, windowRect.bottom - windowRect.top );
QDBeginCGContext( GetWindowPort(windowStorage->overlayWindow), &cgContext );
CGContextClearRect( cgContext, box );
// Paint a semi-transparent box in the middle of our window
box.origin.x = (windowRect.right - windowRect.left) / 4;
box.size.width = (windowRect.right - windowRect.left) / 2;
CGContextSetRGBFillColor( cgContext, 0.5, 0.75, 0.75, 0.2 );
CGContextFillRect( cgContext, box );
CGContextFlush( cgContext );
QDEndCGContext( GetWindowPort(windowStorage->overlayWindow), &cgContext );
}
break;
}
return( err );
}
OpBitmap* CreateOpBitmapFromIcon(IconRef iconin, int cx, int cy)
{
if (iconin)
{
OpBitmap* bm;
if (OpStatus::IsSuccess(OpBitmap::Create(&bm, cx, cy, FALSE, TRUE, 0, 0, TRUE)))
{
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
void* p = bm->GetPointer(OpBitmap::ACCESS_WRITEONLY);
memset(p, 0, bm->Height()*bm->GetBytesPerLine());
CGBitmapInfo alpha = kCGBitmapByteOrderVegaInternal;
CGContextRef ctx = CGBitmapContextCreate(p, bm->Width(), bm->Height(), 8, bm->GetBytesPerLine(), colorSpace, alpha);
CGColorSpaceRelease(colorSpace);
CGRect cgrect = CGRectMake(0,0,cx,cy);
PlotIconRefInContext(ctx, &cgrect, kAlignAbsoluteCenter, kTransformNone, NULL, kPlotIconRefNormalFlags, iconin);
CGContextFlush(ctx);
CGContextRelease(ctx);
bm->ReleasePointer();
return bm;
}
}
return NULL;
}
PassRefPtr<ByteArray> ImageBuffer::getPremultipliedImageData(const IntRect& rect) const
{
if (m_context->isAcceleratedContext())
CGContextFlush(context()->platformContext());
return m_data.getData(rect, m_size, m_context->isAcceleratedContext(), false);
}
void ImageBuffer::putPremultipliedImageData(ByteArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint)
{
if (m_context->isAcceleratedContext())
CGContextFlush(context()->platformContext());
m_data.putData(source, sourceSize, sourceRect, destPoint, m_size, m_context->isAcceleratedContext(), false);
}
// This example is almost identical to the helloworld example, except that
// in this case, there are two styles instead of just one. ATSUSetRunStyle
// is used to apply a style to different parts of the text.
//
void DrawMultipleStylesContents(WindowRef window)
{
CFStringRef string;
UniChar *text;
UniCharCount length;
UniCharArrayOffset currentStart, currentEnd;
ATSUStyle style1, style2;
ATSUTextLayout layout;
ATSUFontID font;
Fixed pointSize;
ATSUAttributeTag tags[2];
ByteCount sizes[2];
ATSUAttributeValuePtr values[2];
Fixed lineWidth, ascent, descent;
CGContextRef cgContext;
float x, y, cgY, windowHeight;
ItemCount numSoftBreaks;
UniCharArrayOffset *theSoftBreaks;
int i;
GrafPtr port, savedPort;
Rect portBounds;
// Set up the graphics port
port = GetWindowPort(window);
GetPort(&savedPort);
SetPort(port);
GetPortBounds(port, &portBounds);
EraseRect(&portBounds);
// Create a style object. This is one of two objects necessary to draw using ATSUI.
// (The layout is the other.)
verify_noerr( ATSUCreateStyle(&style1) );
// Look up the font we are going to use, and set it in the style object, using
// the aforementioned "triple" (tag, size, value) semantics. This is how almost
// all settings in ATSUI are applied.
verify_noerr( ATSUFindFontFromName(kMultipleStylesFontName, strlen(kMultipleStylesFontName), kFontFullName, kFontNoPlatform, kFontNoScript, kFontNoLanguage, &font) );
tags[0] = kATSUFontTag;
sizes[0] = sizeof(ATSUFontID);
values[0] = &font;
verify_noerr( ATSUSetAttributes(style1, 1, tags, sizes, values) );
// Set the point size, also using a triple. You can actually set multiple triples at once,
// since the tag, size, and value parameters are arrays. Other examples do this, such as
// the vertical text example.
//
pointSize = Long2Fix(kMultipleStylesFontSize);
tags[0] = kATSUSizeTag;
sizes[0] = sizeof(Fixed);
values[0] = &pointSize;
verify_noerr( ATSUSetAttributes(style1, 1, tags, sizes, values) );
// Now we create the second of two objects necessary to draw text using ATSUI, the layout.
// You can specify a pointer to the text buffer at layout creation time, or later using
// the routine ATSUSetTextPointerLocation(). Below, we do it after layout creation time.
verify_noerr( ATSUCreateTextLayout(&layout) );
// Before assigning text to the layout, we must first convert the string we plan to draw
// from a CFStringRef into an array of UniChar.
string = CFStringCreateWithCString(NULL, "In this example, various parts of the text have different styles applied. The same style is used more than once.", kCFStringEncodingASCII);
// Extract the raw Unicode from the CFString, then dispose of the CFString
length = CFStringGetLength(string);
text = (UniChar *)malloc(length * sizeof(UniChar));
CFStringGetCharacters(string, CFRangeMake(0, length), text);
CFRelease(string);
// Attach the resulting UTF-16 Unicode text to the layout
verify_noerr( ATSUSetTextPointerLocation(layout, text, kATSUFromTextBeginning, kATSUToTextEnd, length) );
// Now we tie the two necessary objects, the layout and the style, together
verify_noerr( ATSUSetRunStyle(layout, style1, kATSUFromTextBeginning, kATSUToTextEnd) );
// Now, for this example we create a second style, and assign it to various runs within
// the text. For our example, the run offsets are hard-coded for simplicity's sake. In
// a real application, style runs are often assigned from external sources, such as user
// selection.
verify_noerr( ATSUCreateAndCopyStyle(style1, &style2) );
// Change the font for the second style
verify_noerr( ATSUFindFontFromName(kMultipleStylesFontName2, strlen(kMultipleStylesFontName2), kFontFullName, kFontNoPlatform, kFontNoScript, kFontNoLanguage, &font) );
tags[0] = kATSUFontTag;
sizes[0] = sizeof(ATSUFontID);
values[0] = &font;
verify_noerr( ATSUSetAttributes(style2, 1, tags, sizes, values) );
// Apply the new style to the text in various places
verify_noerr( ATSUSetRunStyle(layout, style2, 8, 7) ); // The word "example"
verify_noerr( ATSUSetRunStyle(layout, style2, 65, 7) ); // The word "applied"
verify_noerr( ATSUSetRunStyle(layout, style2, 83, 5) ); // The word "style"
verify_noerr( ATSUSetRunStyle(layout, style2, 107, 4) ); // The word "once"
// In this example, we are breaking text into lines.
// Therefore, we need to know the width of the line.
lineWidth = X2Fix(portBounds.right - portBounds.left - 2.0*kMultipleStylesMargin);
tags[0] = kATSULineWidthTag;
sizes[0] = sizeof(Fixed);
values[0] = &lineWidth;
verify_noerr( ATSUSetLayoutControls(layout, 1, tags, sizes, values) );
// Prepare the CGContext for drawing
QDBeginCGContext(port, &cgContext);
tags[0] = kATSUCGContextTag;
sizes[0] = sizeof(CGContextRef);
values[0] = &cgContext;
verify_noerr( ATSUSetLayoutControls(layout, 1, tags, sizes, values) );
// Prepare the coordinates for drawing. In our example, "x" and "y" are the coordinates
// in QD space. "cgY" contains the y coordinate in CG space.
//
windowHeight = portBounds.bottom - portBounds.top;
x = kMultipleStylesMargin; // leave a small left margin
y = kMultipleStylesMargin; // leave a small top margin
cgY = windowHeight - y; // Subtract the y coordinate from the height of the
// window to get the coordinate in CG-aware space.
// Break the text into lines
verify_noerr( ATSUBatchBreakLines(layout, kATSUFromTextBeginning, length, lineWidth, &numSoftBreaks) );
verify_noerr( ATSUGetSoftLineBreaks(layout, kATSUFromTextBeginning, kATSUToTextEnd, 0, NULL, &numSoftBreaks) );
theSoftBreaks = (UniCharArrayOffset *) malloc(numSoftBreaks * sizeof(UniCharArrayOffset));
verify_noerr( ATSUGetSoftLineBreaks(layout, kATSUFromTextBeginning, kATSUToTextEnd, numSoftBreaks, theSoftBreaks, &numSoftBreaks) );
// Loop over all the lines and draw them
currentStart = 0;
for (i=0; i <= numSoftBreaks; i++) {
currentEnd = ((numSoftBreaks > 0 ) && (numSoftBreaks > i)) ? theSoftBreaks[i] : length;
// This is the height of a line, the ascent and descent. Getting the values this way is the preferred method.
ATSUGetLineControl(layout, currentStart, kATSULineAscentTag, sizeof(ATSUTextMeasurement), &ascent, NULL);
ATSUGetLineControl(layout, currentStart, kATSULineDescentTag, sizeof(ATSUTextMeasurement), &descent, NULL);
// Make room for the area above the baseline
y += Fix2X(ascent);
cgY = windowHeight - y;
// Draw the text
verify_noerr( ATSUDrawText(layout, currentStart, currentEnd - currentStart, X2Fix(x), X2Fix(cgY)) );
// Make room for the area beloww the baseline
y += Fix2X(descent);
// Prepare for next line
currentStart = currentEnd;
}
// This is a one-shot window, so we are now ready to dispose of all our objects.
// Normally, we would want to keep everything around in case we needed to redraw or change
// the text at some point.
// Tear down the CGContext
CGContextFlush(cgContext);
QDEndCGContext(port, &cgContext);
// Deallocate string storage
free(text);
// Layout and styles also need to be disposed
verify_noerr( ATSUDisposeStyle(style1) );
verify_noerr( ATSUDisposeStyle(style2) );
verify_noerr( ATSUDisposeTextLayout(layout) );
// Restore the graphics port
SetPort(savedPort);
}
void QuartzWindow::post_draw(bool incremental) {
CGContextFlush(myContext);
}
static bool font_renderer_create_atlas(CTFontRef face, ct_font_renderer_t *handle)
{
int max_width, max_height;
unsigned i;
size_t bytesPerRow;
CGGlyph glyphs[CT_ATLAS_SIZE];
CGRect bounds[CT_ATLAS_SIZE];
CGSize advances[CT_ATLAS_SIZE];
float ascent, descent;
CGContextRef offscreen;
CFDictionaryRef attr;
CFTypeRef values[1];
CFStringRef keys[1];
void *bitmapData = NULL;
bool ret = true;
size_t bitsPerComponent = 8;
UniChar characters[CT_ATLAS_SIZE] = {0};
values[0] = face;
keys[0] = kCTFontAttributeName;
for (i = 0; i < CT_ATLAS_SIZE; i++)
characters[i] = (UniChar)i;
CTFontGetGlyphsForCharacters(face, characters, glyphs, CT_ATLAS_SIZE);
CTFontGetBoundingRectsForGlyphs(face,
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
kCTFontOrientationDefault,
#else
kCTFontDefaultOrientation,
#endif
glyphs, bounds, CT_ATLAS_SIZE);
CTFontGetAdvancesForGlyphs(face,
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
kCTFontOrientationDefault,
#else
kCTFontDefaultOrientation,
#endif
glyphs, advances, CT_ATLAS_SIZE);
ascent = CTFontGetAscent(face);
descent = CTFontGetDescent(face);
max_width = 0;
max_height = 0;
for (i = 0; i < CT_ATLAS_SIZE; i++)
{
int origin_x, origin_y;
struct font_glyph *glyph = &handle->glyphs[i];
if (!glyph)
continue;
origin_x = ceil(bounds[i].origin.x);
origin_y = ceil(bounds[i].origin.y);
glyph->draw_offset_x = 0;
glyph->draw_offset_y = -ascent;
glyph->width = ceil(bounds[i].size.width);
glyph->height = ceil(bounds[i].size.height);
glyph->advance_x = ceil(advances[i].width);
glyph->advance_y = ceil(advances[i].height);
max_width = MAX(max_width, (origin_x + glyph->width));
max_height = MAX(max_height, (origin_y + glyph->height));
}
max_height = MAX(max_height, ceil(ascent+descent));
handle->atlas.width = max_width * CT_ATLAS_COLS;
handle->atlas.height = max_height * CT_ATLAS_ROWS;
handle->atlas.buffer = (uint8_t*)
calloc(handle->atlas.width * handle->atlas.height, 1);
if (!handle->atlas.buffer)
{
ret = false;
goto end;
}
bytesPerRow = max_width;
bitmapData = calloc(max_height, bytesPerRow);
offscreen = CGBitmapContextCreate(bitmapData, max_width, max_height,
bitsPerComponent, bytesPerRow, NULL, kCGImageAlphaOnly);
CGContextSetTextMatrix(offscreen, CGAffineTransformIdentity);
attr = CFDictionaryCreate(NULL, (const void **)&keys, (const void **)&values,
sizeof(keys) / sizeof(keys[0]), &kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
for (i = 0; i < CT_ATLAS_SIZE; i++)
{
char glyph_cstr[2];
const uint8_t *src;
uint8_t *dst;
unsigned offset_x, offset_y, r, c;
CFStringRef glyph_cfstr;
CFAttributedStringRef attrString;
CTLineRef line;
struct font_glyph *glyph = &handle->glyphs[i];
if (!glyph)
continue;
glyph->width = max_width;
glyph->height = max_height;
offset_x = (i % CT_ATLAS_COLS) * max_width;
offset_y = (i / CT_ATLAS_COLS) * max_height;
glyph->atlas_offset_x = offset_x;
glyph->atlas_offset_y = offset_y;
glyph_cstr[0] = i;
glyph_cstr[1] = 0;
glyph_cfstr = CFStringCreateWithCString(
NULL, glyph_cstr, kCFStringEncodingASCII );
attrString =
CFAttributedStringCreate(NULL, glyph_cfstr, attr);
CFRelease(glyph_cfstr);
glyph_cfstr = NULL;
line = CTLineCreateWithAttributedString(attrString);
CFRelease(attrString);
attrString = NULL;
memset( bitmapData, 0, max_height * bytesPerRow );
CGContextSetTextPosition(offscreen, 0, descent);
CTLineDraw(line, offscreen);
CGContextFlush( offscreen );
CFRelease( line );
line = NULL;
dst = (uint8_t*)handle->atlas.buffer;
src = (const uint8_t*)bitmapData;
for (r = 0; r < max_height; r++ )
{
for (c = 0; c < max_width; c++)
{
unsigned src_idx = r * bytesPerRow + c;
unsigned dest_idx =
(r + offset_y) * (CT_ATLAS_COLS * max_width) + (c + offset_x);
uint8_t v = src[src_idx];
dst[dest_idx] = v;
}
}
}
CFRelease(attr);
CGContextRelease(offscreen);
attr = NULL;
offscreen = NULL;
free(bitmapData);
end:
return ret;
}
void ImageBuffer::flushContext() const
{
CGContextFlush(context().platformContext());
}
void wxGCDC::Flush()
{
#ifdef __WXMAC__
CGContextFlush( (CGContextRef) m_graphicContext->GetNativeContext() );
#endif
}
void ImageBuffer::putPremultipliedImageData(ImageData* source, const IntRect& sourceRect, const IntPoint& destPoint)
{
if (m_accelerateRendering)
CGContextFlush(context()->platformContext());
putImageData<Premultiplied>(source, sourceRect, destPoint, m_data, m_size, m_accelerateRendering);
}
void wxOverlayImpl::EndDrawing( wxWindowDC* dc)
{
dc->SetGraphicsContext(NULL);
CGContextFlush( m_overlayContext );
}
PassRefPtr<ImageData> ImageBuffer::getPremultipliedImageData(const IntRect& rect) const
{
if (m_accelerateRendering)
CGContextFlush(context()->platformContext());
return getImageData<Premultiplied>(rect, m_data, m_size, m_accelerateRendering);
}
void GraphicsContextPlatformPrivate::flush()
{
CGContextFlush(m_cgContext.get());
}
