static pascal OSStatus CustomSpotViewHandler(EventHandlerCallRef inCaller, EventRef inEvent, void* inRefcon)
{
OSStatus result = eventNotHandledErr;
CustomSpotViewData* myData = (CustomSpotViewData*)inRefcon;
switch (GetEventClass(inEvent))
{
case kEventClassHIObject:
switch (GetEventKind(inEvent))
{
case kEventHIObjectConstruct:
{
myData = (CustomSpotViewData*) calloc(1, sizeof(CustomSpotViewData));
GetEventParameter(inEvent, kEventParamHIObjectInstance, typeHIObjectRef, NULL, sizeof(myData->view), NULL, &myData->view);
result = SetEventParameter(inEvent, kEventParamHIObjectInstance, typeVoidPtr, sizeof(myData), &myData);
break;
}
case kEventHIObjectInitialize:
{
HIRect bounds;
GetEventParameter(inEvent, kEventParamBounds, typeHIRect, NULL, sizeof(bounds), NULL, &bounds);
myData->spot.x = CGRectGetMidX(bounds) - CGRectGetMinX(bounds);
myData->spot.y = CGRectGetMidY(bounds) - CGRectGetMinY(bounds);
HIViewSetVisible(myData->view, true);
break;
}
case kEventHIObjectDestruct:
{
free(myData);
result = noErr;
break;
}
default:
break;
}
break;
case kEventClassControl:
switch (GetEventKind(inEvent))
{
case kEventControlDraw:
{
CGContextRef context;
HIRect bounds;
result = GetEventParameter(inEvent, kEventParamCGContextRef, typeCGContextRef, NULL, sizeof(context), NULL, &context);
HIViewGetBounds(myData->view, &bounds);
if (!IsControlActive(myData->view))
{
CGContextSetGrayStrokeColor(context, 0.5, 0.3);
CGContextSetGrayFillColor(context, 0.5, 0.3);
}
else
{
CGContextSetRGBStrokeColor(context, 0.0, 0.0, 0.0, 0.7);
CGContextSetRGBFillColor(context, 0.0, 0.0, 0.0, 0.7);
}
CGContextSetLineWidth(context, 3.0);
CGContextStrokeRect(context, bounds);
HIRect spot = { {myData->spot.x - 4.0, myData->spot.y - 4.0}, {8.0, 8.0} };
CGContextFillRect(context, spot);
result = noErr;
break;
}
case kEventControlBoundsChanged:
{
HIRect newHIBounds;
GetEventParameter(inEvent, kEventParamCurrentBounds, typeHIRect, NULL, sizeof(newHIBounds), NULL, &newHIBounds);
myData->spot.x = CGRectGetMidX(newHIBounds) - CGRectGetMinX(newHIBounds);
myData->spot.y = CGRectGetMidY(newHIBounds) - CGRectGetMinY(newHIBounds);
break;
}
case kEventControlHitTest:
{
HIPoint pt;
HIRect bounds;
GetEventParameter(inEvent, kEventParamMouseLocation, typeHIPoint, NULL, sizeof(pt), NULL, &pt);
HIViewGetBounds(myData->view, &bounds);
ControlPartCode part = (CGRectContainsPoint(bounds, pt))?kControlButtonPart:kControlNoPart;
result = SetEventParameter(inEvent, kEventParamControlPart, typeControlPartCode, sizeof(part), &part);
break;
}
case kEventControlTrack:
{
Point qdPoint;
Rect qdWindowBounds;
HIPoint hiPoint;
HIRect hiViewBounds;
MouseTrackingResult mouseStatus = kMouseTrackingMouseDown;
HIViewGetBounds(myData->view, &hiViewBounds);
GetWindowBounds(GetControlOwner(myData->view), kWindowStructureRgn, &qdWindowBounds);
// handle the first mouseDown before moving
GetEventParameter(inEvent, kEventParamMouseLocation, typeHIPoint, NULL, sizeof(hiPoint), NULL, &hiPoint);
while (mouseStatus != kMouseTrackingMouseUp)
{
if (CGRectContainsPoint(hiViewBounds, hiPoint))
{
if (hiPoint.x < hiViewBounds.origin.x+4) hiPoint.x = hiViewBounds.origin.x+4;
if (hiPoint.x > hiViewBounds.origin.x+hiViewBounds.size.width-4) hiPoint.x = hiViewBounds.origin.x+hiViewBounds.size.width-4;
if (hiPoint.y < hiViewBounds.origin.y+4) hiPoint.y = hiViewBounds.origin.y+4;
if (hiPoint.y > hiViewBounds.origin.y+hiViewBounds.size.height-4) hiPoint.y = hiViewBounds.origin.y+hiViewBounds.size.height-4;
myData->spot = hiPoint;
HIViewSetNeedsDisplay(myData->view, true);
}
// a -1 GrafPtr to TrackMouseLocation yields global coordinates
TrackMouseLocation((GrafPtr)-1L, &qdPoint, &mouseStatus);
// convert to window-relative coordinates
hiPoint.x = qdPoint.h - qdWindowBounds.left;
hiPoint.y = qdPoint.v - qdWindowBounds.top;
// convert to view-relative coordinates
HIViewConvertPoint(&hiPoint, NULL, myData->view);
}
break;
}
default:
break;
}
break;
default:
break;
}
return result;
}
void drawPlugin(NPP instance, NPCocoaEvent* event)
{
if (!browserUAString)
return;
PluginInstance* currentInstance = (PluginInstance*)(instance->pdata);
CGContextRef cgContext = event->data.draw.context;
if (!cgContext)
return;
float windowWidth = currentInstance->window.width;
float windowHeight = currentInstance->window.height;
// save the cgcontext gstate
CGContextSaveGState(cgContext);
// we get a flipped context
CGContextTranslateCTM(cgContext, 0.0, windowHeight);
CGContextScaleCTM(cgContext, 1.0, -1.0);
// draw a gray background for the plugin
CGContextAddRect(cgContext, CGRectMake(0, 0, windowWidth, windowHeight));
CGContextSetGrayFillColor(cgContext, 0.5, 1.0);
CGContextDrawPath(cgContext, kCGPathFill);
// draw a black frame around the plugin
CGContextAddRect(cgContext, CGRectMake(0, 0, windowWidth, windowHeight));
CGContextSetGrayStrokeColor(cgContext, 0.0, 1.0);
CGContextSetLineWidth(cgContext, 6.0);
CGContextStrokePath(cgContext);
// draw the UA string using ATSUI
CGContextSetGrayFillColor(cgContext, 0.0, 1.0);
ATSUStyle atsuStyle;
ATSUCreateStyle(&atsuStyle);
CFIndex stringLength = CFStringGetLength(browserUAString);
UniChar* unicharBuffer = (UniChar*)malloc((stringLength + 1) * sizeof(UniChar));
CFStringGetCharacters(browserUAString, CFRangeMake(0, stringLength), unicharBuffer);
UniCharCount runLengths = kATSUToTextEnd;
ATSUTextLayout atsuLayout;
ATSUCreateTextLayoutWithTextPtr(unicharBuffer,
kATSUFromTextBeginning,
kATSUToTextEnd,
stringLength,
1,
&runLengths,
&atsuStyle,
&atsuLayout);
ATSUAttributeTag contextTag = kATSUCGContextTag;
ByteCount byteSize = sizeof(CGContextRef);
ATSUAttributeValuePtr contextATSUPtr = &cgContext;
ATSUSetLayoutControls(atsuLayout, 1, &contextTag, &byteSize, &contextATSUPtr);
ATSUTextMeasurement lineAscent, lineDescent;
ATSUGetLineControl(atsuLayout,
kATSUFromTextBeginning,
kATSULineAscentTag,
sizeof(ATSUTextMeasurement),
&lineAscent,
&byteSize);
ATSUGetLineControl(atsuLayout,
kATSUFromTextBeginning,
kATSULineDescentTag,
sizeof(ATSUTextMeasurement),
&lineDescent,
&byteSize);
float lineHeight = FixedToFloat(lineAscent) + FixedToFloat(lineDescent);
ItemCount softBreakCount;
ATSUBatchBreakLines(atsuLayout,
kATSUFromTextBeginning,
stringLength,
FloatToFixed(windowWidth - 10.0),
&softBreakCount);
ATSUGetSoftLineBreaks(atsuLayout,
kATSUFromTextBeginning,
kATSUToTextEnd,
0, NULL, &softBreakCount);
UniCharArrayOffset* softBreaks = (UniCharArrayOffset*)malloc(softBreakCount * sizeof(UniCharArrayOffset));
ATSUGetSoftLineBreaks(atsuLayout,
kATSUFromTextBeginning,
kATSUToTextEnd,
softBreakCount, softBreaks, &softBreakCount);
UniCharArrayOffset currentDrawOffset = kATSUFromTextBeginning;
int i = 0;
while (i < softBreakCount) {
ATSUDrawText(atsuLayout, currentDrawOffset, softBreaks[i], FloatToFixed(5.0), FloatToFixed(windowHeight - 5.0 - (lineHeight * (i + 1.0))));
currentDrawOffset = softBreaks[i];
i++;
}
ATSUDrawText(atsuLayout, currentDrawOffset, kATSUToTextEnd, FloatToFixed(5.0), FloatToFixed(windowHeight - 5.0 - (lineHeight * (i + 1.0))));
free(unicharBuffer);
free(softBreaks);
// restore the cgcontext gstate
CGContextRestoreGState(cgContext);
}
