/* * tkMacOSXDraw.c -- * * This file contains functions that perform drawing to * Xlib windows. Most of the functions simple emulate * Xlib functions. * * Copyright (c) 1995-1997 Sun Microsystems, Inc. * Copyright 2001, Apple Computer, Inc. * * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tkMacOSXDraw.c,v 1.2.2.2 2004/02/23 10:49:29 das Exp $ */ #include "tkInt.h" #include "X11/X.h" #include "X11/Xlib.h" #include #include #include "tkMacOSXInt.h" #include "tkPort.h" #include "tkMacOSXDebug.h" #ifndef PI # define PI 3.14159265358979323846 #endif #define RGBFLOATRED( c ) (float)((float)(c.red) / 65535.0) #define RGBFLOATGREEN( c ) (float)((float)(c.green) / 65535.0) #define RGBFLOATBLUE( c ) (float)((float)(c.blue) / 65535.0) /* * Temporary regions that can be reused. */ static RgnHandle tmpRgn = NULL; static RgnHandle tmpRgn2 = NULL; static PixPatHandle gPenPat = NULL; static int useCGDrawing = 0; /* * Prototypes for functions used only in this file. */ static unsigned char InvertByte _ANSI_ARGS_((unsigned char data)); void TkMacOSXSetUpCGContext(MacDrawable *macWin, CGrafPtr destPort, GC gc, CGContextRef *contextPtr); void TkMacOSXReleaseCGContext(MacDrawable *macWin, CGrafPtr destPort, CGContextRef *context); /* *---------------------------------------------------------------------- * * XCopyArea -- * * Copies data from one drawable to another using block transfer * routines. * * Results: * None. * * Side effects: * Data is moved from a window or bitmap to a second window or * bitmap. * *---------------------------------------------------------------------- */ void XCopyArea( Display* display, /* Display. */ Drawable src, /* Source drawable. */ Drawable dst, /* Destination drawable. */ GC gc, /* GC to use. */ int src_x, /* X & Y, width & height */ int src_y, /* define the source rectangle */ unsigned int width, /* the will be copied. */ unsigned int height, int dest_x, /* Dest X & Y on dest rect. */ int dest_y) { Rect srcRect, dstRect; Rect * srcPtr, * dstPtr; const BitMap * srcBit; const BitMap * dstBit; MacDrawable *srcDraw = (MacDrawable *) src; MacDrawable *dstDraw = (MacDrawable *) dst; CGrafPtr srcPort, dstPort; CGrafPtr saveWorld; GDHandle saveDevice; short tmode; RGBColor origForeColor, origBackColor, whiteColor, blackColor; Rect clpRect; dstPort = TkMacOSXGetDrawablePort(dst); srcPort = TkMacOSXGetDrawablePort(src); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(dstPort, NULL); GetForeColor(&origForeColor); GetBackColor(&origBackColor); whiteColor.red = 0; whiteColor.blue = 0; whiteColor.green = 0; RGBForeColor(&whiteColor); blackColor.red = 0xFFFF; blackColor.blue = 0xFFFF; blackColor.green = 0xFFFF; RGBBackColor(&blackColor); if (tmpRgn2 == NULL) { tmpRgn2 = NewRgn(); } srcPtr = &srcRect; SetRect(&srcRect, (short) (srcDraw->xOff + src_x), (short) (srcDraw->yOff + src_y), (short) (srcDraw->xOff + src_x + width ), (short) (srcDraw->yOff + src_y + height)); if (tkPictureIsOpen ) { dstPtr = &srcRect; } else { dstPtr = &dstRect; SetRect(&dstRect, (short) (dstDraw->xOff + dest_x), (short) (dstDraw->yOff + dest_y), (short) (dstDraw->xOff + dest_x + width ), (short) (dstDraw->yOff + dest_y + height)); } TkMacOSXSetUpClippingRgn(dst); /* * We will change the clip rgn in this routine, so we need to * be able to restore it when we exit. */ GetClip(tmpRgn2); if (tkPictureIsOpen) { /* * When rendering into a picture, after a call to "OpenCPicture" * the clipping is seriously WRONG and also INCONSISTENT with the * clipping for single plane bitmaps. * To circumvent this problem, we clip to the whole window * In this case, would have also clipped to the srcRect * ClipRect(&srcRect); */ GetPortBounds(dstPort,&clpRect); dstPtr = &srcRect; ClipRect(&clpRect); } if (!gc->clip_mask ) { } else if (((TkpClipMask*)gc->clip_mask)->type == TKP_CLIP_REGION) { RgnHandle clipRgn = (RgnHandle) ((TkpClipMask*)gc->clip_mask)->value.region; int xOffset, yOffset; if (tmpRgn == NULL) { tmpRgn = NewRgn(); } if (!tkPictureIsOpen) { xOffset = dstDraw->xOff + gc->clip_x_origin; yOffset = dstDraw->yOff + gc->clip_y_origin; OffsetRgn(clipRgn, xOffset, yOffset); } GetClip(tmpRgn); SectRgn(tmpRgn, clipRgn, tmpRgn); SetClip(tmpRgn); if (!tkPictureIsOpen) { OffsetRgn(clipRgn, -xOffset, -yOffset); } } srcBit = GetPortBitMapForCopyBits( srcPort ); dstBit = GetPortBitMapForCopyBits( dstPort ); tmode = srcCopy; CopyBits(srcBit, dstBit, srcPtr, dstPtr, tmode, NULL); RGBForeColor(&origForeColor); RGBBackColor(&origBackColor); SetClip(tmpRgn2); SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XCopyPlane -- * * Copies a bitmap from a source drawable to a destination * drawable. The plane argument specifies which bit plane of * the source contains the bitmap. Note that this implementation * ignores the gc->function. * * Results: * None. * * Side effects: * Changes the destination drawable. * *---------------------------------------------------------------------- */ void XCopyPlane( Display* display, /* Display. */ Drawable src, /* Source drawable. */ Drawable dst, /* Destination drawable. */ GC gc, /* The GC to use. */ int src_x, /* X, Y, width & height */ int src_y, /* define the source rect. */ unsigned int width, unsigned int height, int dest_x, /* X & Y on dest where we will copy. */ int dest_y, unsigned long plane) /* Which plane to copy. */ { Rect srcRect, dstRect; Rect * srcPtr, * dstPtr; const BitMap * srcBit; const BitMap * dstBit; const BitMap * mskBit; MacDrawable *srcDraw = (MacDrawable *) src; MacDrawable *dstDraw = (MacDrawable *) dst; GWorldPtr srcPort, dstPort, mskPort; CGrafPtr saveWorld; GDHandle saveDevice; RGBColor macColor; TkpClipMask *clipPtr = (TkpClipMask*)gc->clip_mask; short tmode; srcPort = TkMacOSXGetDrawablePort(src); dstPort = TkMacOSXGetDrawablePort(dst); if (tmpRgn == NULL) { tmpRgn = NewRgn(); } display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(dstPort, NULL); TkMacOSXSetUpClippingRgn(dst); srcBit = GetPortBitMapForCopyBits ( srcPort ); dstBit = GetPortBitMapForCopyBits ( dstPort ); SetRect(&srcRect, (short) (srcDraw->xOff + src_x), (short) (srcDraw->yOff + src_y), (short) (srcDraw->xOff + src_x + width), (short) (srcDraw->yOff + src_y + height)); srcPtr = &srcRect; if (tkPictureIsOpen) { /* * When rendering into a picture, after a call to "OpenCPicture" * the clipping is seriously WRONG and also INCONSISTENT with the * clipping for color bitmaps. * To circumvent this problem, we clip to the whole window */ Rect clpRect; GetPortBounds(dstPort,&clpRect); ClipRect(&clpRect); dstPtr = &srcRect; } else { dstPtr = &dstRect; SetRect(&dstRect, (short) (dstDraw->xOff + dest_x), (short) (dstDraw->yOff + dest_y), (short) (dstDraw->xOff + dest_x + width), (short) (dstDraw->yOff + dest_y + height)); } tmode = srcOr; tmode = srcCopy + transparent; if (TkSetMacColor(gc->foreground, &macColor) == true) { RGBForeColor(&macColor); } if (clipPtr == NULL || clipPtr->type == TKP_CLIP_REGION) { /* * Case 1: opaque bitmaps. */ TkSetMacColor(gc->background, &macColor); RGBBackColor(&macColor); tmode = srcCopy; CopyBits(srcBit, dstBit, srcPtr, dstPtr, tmode, NULL); } else if (clipPtr->type == TKP_CLIP_PIXMAP) { if (clipPtr->value.pixmap == src) { PixMapHandle pm; /* * Case 2: transparent bitmaps. If it's color we ignore * the forecolor. */ pm = GetPortPixMap(srcPort); if (GetPixDepth(pm) == 1) { tmode = srcOr; } else { tmode = transparent; } CopyBits(srcBit, dstBit, srcPtr, dstPtr, tmode, NULL); } else { /* * Case 3: two arbitrary bitmaps. */ tmode = srcCopy; mskPort = TkMacOSXGetDrawablePort(clipPtr->value.pixmap); mskBit = GetPortBitMapForCopyBits ( mskPort ); CopyDeepMask(srcBit, mskBit, dstBit, srcPtr, srcPtr, dstPtr, tmode, NULL); } } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * TkPutImage -- * * Copies a subimage from an in-memory image to a rectangle of * of the specified drawable. * * Results: * None. * * Side effects: * Draws the image on the specified drawable. * *---------------------------------------------------------------------- */ void TkPutImage( unsigned long *colors, /* Unused on Macintosh. */ int ncolors, /* Unused on Macintosh. */ Display* display, /* Display. */ Drawable d, /* Drawable to place image on. */ GC gc, /* GC to use. */ XImage* image, /* Image to place. */ int src_x, /* Source X & Y. */ int src_y, int dest_x, /* Destination X & Y. */ int dest_y, unsigned int width, /* Same width & height for both */ unsigned int height) /* distination and source. */ { CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; const BitMap * destBits; MacDrawable *dstDraw = (MacDrawable *) d; int i, j; BitMap bitmap; char *newData = NULL; Rect destRect, srcRect; destPort = TkMacOSXGetDrawablePort(d); SetRect(&destRect, dstDraw->xOff + dest_x, dstDraw->yOff + dest_y, dstDraw->xOff + dest_x + width, dstDraw->yOff + dest_y + height); SetRect(&srcRect, src_x, src_y, src_x + width, src_y + height); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); if (image->obdata) { /* Image from XGetImage, copy from containing GWorld directly */ GWorldPtr srcPort = TkMacOSXGetDrawablePort((Drawable)image->obdata); CopyBits(GetPortBitMapForCopyBits(srcPort), GetPortBitMapForCopyBits (destPort), &srcRect, &destRect, srcCopy, NULL); } else if (image->depth == 1) { /* * This code assumes a pixel depth of 1 */ bitmap.bounds.top = bitmap.bounds.left = 0; bitmap.bounds.right = (short) image->width; bitmap.bounds.bottom = (short) image->height; if ((image->bytes_per_line % 2) == 1) { char *newPtr, *oldPtr; newData = (char *) ckalloc(image->height * (image->bytes_per_line + 1)); newPtr = newData; oldPtr = image->data; for (i = 0; i < image->height; i++) { for (j = 0; j < image->bytes_per_line; j++) { *newPtr = InvertByte((unsigned char) *oldPtr); newPtr++, oldPtr++; } *newPtr = 0; newPtr++; } bitmap.baseAddr = newData; bitmap.rowBytes = image->bytes_per_line + 1; } else { newData = (char *) ckalloc(image->height * image->bytes_per_line); for (i = 0; i < image->height * image->bytes_per_line; i++) { newData[i] = InvertByte((unsigned char) image->data[i]); } bitmap.baseAddr = newData; bitmap.rowBytes = image->bytes_per_line; } destBits = GetPortBitMapForCopyBits ( destPort ); CopyBits(&bitmap, destBits, &srcRect, &destRect, srcCopy, NULL); } else { /* Color image */ PixMap pixmap; pixmap.bounds.left = 0; pixmap.bounds.top = 0; pixmap.bounds.right = (short) image->width; pixmap.bounds.bottom = (short) image->height; pixmap.pixelType = RGBDirect; pixmap.pmVersion = baseAddr32; /* 32bit clean */ pixmap.packType = 0; pixmap.packSize = 0; pixmap.hRes = 0x00480000; pixmap.vRes = 0x00480000; pixmap.pixelSize = 32; pixmap.cmpCount = 3; pixmap.cmpSize = 8; pixmap.pixelFormat = k32ARGBPixelFormat; pixmap.pmTable = NULL; pixmap.pmExt = 0; pixmap.baseAddr = image->data; pixmap.rowBytes = image->bytes_per_line | 0x8000; CopyBits((BitMap *) &pixmap, GetPortBitMapForCopyBits ( destPort ), &srcRect, &destRect, srcCopy, NULL); } if (newData != NULL) { ckfree(newData); } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XFillRectangles -- * * Fill multiple rectangular areas in the given drawable. * * Results: * None. * * Side effects: * Draws onto the specified drawable. * *---------------------------------------------------------------------- */ void XFillRectangles( Display* display, /* Display. */ Drawable d, /* Draw on this. */ GC gc, /* Use this GC. */ XRectangle *rectangles, /* Rectangle array. */ int n_rectangles) /* Number of rectangles. */ { MacDrawable *macWin = (MacDrawable *) d; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; Rect theRect; int i; destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); TkMacOSXSetUpGraphicsPort(gc, destPort); for (i = 0; i < n_rectangles; i++) { theRect.left = (short) (macWin->xOff + rectangles[i].x); theRect.top = (short) (macWin->yOff + rectangles[i].y); theRect.right = (short) (theRect.left + rectangles[i].width); theRect.bottom = (short) (theRect.top + rectangles[i].height); FillCRect(&theRect, gPenPat); } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XDrawLines -- * * Draw connected lines. * * Results: * None. * * Side effects: * Renders a series of connected lines. * *---------------------------------------------------------------------- */ void XDrawLines( Display* display, /* Display. */ Drawable d, /* Draw on this. */ GC gc, /* Use this GC. */ XPoint* points, /* Array of points. */ int npoints, /* Number of points. */ int mode) /* Line drawing mode. */ { MacDrawable *macWin = (MacDrawable *) d; CGrafPtr saveWorld; GWorldPtr destPort; GDHandle saveDevice; int i; destPort = TkMacOSXGetDrawablePort(d); display->request++; if (npoints < 2) { return; /* TODO: generate BadValue error. */ } GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); if (useCGDrawing) { CGContextRef outContext; TkMacOSXSetUpCGContext(macWin, destPort, gc, &outContext); CGContextBeginPath(outContext); CGContextMoveToPoint(outContext, (float) points[0].x, (float) points[0].y); if (mode == CoordModeOrigin) { for (i = 1; i < npoints; i++) { CGContextAddLineToPoint(outContext, (float) points[i].x, (float) points[i].y); } } CGContextStrokePath(outContext); TkMacOSXReleaseCGContext(macWin, destPort, &outContext); } else { TkMacOSXSetUpGraphicsPort(gc, destPort); ShowPen(); PenPixPat(gPenPat); MoveTo((short) (macWin->xOff + points[0].x), (short) (macWin->yOff + points[0].y)); for (i = 1; i < npoints; i++) { if (mode == CoordModeOrigin) { LineTo((short) (macWin->xOff + points[i].x), (short) (macWin->yOff + points[i].y)); } else { Line((short) (macWin->xOff + points[i].x), (short) (macWin->yOff + points[i].y)); } } HidePen(); } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XDrawSegments -- * * Draw unconnected lines. * * Results: * None. * * Side effects: * Renders a series of connected lines. * *---------------------------------------------------------------------- */ void XDrawSegments( Display *display, Drawable d, GC gc, XSegment *segments, int nsegments) { MacDrawable *macWin = (MacDrawable *) d; CGrafPtr saveWorld; GWorldPtr destPort; GDHandle saveDevice; int i; destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); if (useCGDrawing) { CGContextRef outContext; TkMacOSXSetUpCGContext(macWin, destPort, gc, &outContext); CGContextBeginPath(outContext); for (i = 0; i < nsegments; i++) { CGContextMoveToPoint(outContext, (float) segments[i].x1, (float) segments[i].y1); CGContextAddLineToPoint (outContext, (float) segments[i].x2, (float) segments[i].y2); } CGContextStrokePath(outContext); TkMacOSXReleaseCGContext(macWin, destPort, &outContext); } else { TkMacOSXSetUpGraphicsPort(gc, destPort); ShowPen(); PenPixPat(gPenPat); for (i = 0; i < nsegments; i++) { MoveTo((short) (macWin->xOff + segments[i].x1), (short) (macWin->yOff + segments[i].y1)); LineTo((short) (macWin->xOff + segments[i].x2), (short) (macWin->yOff + segments[i].y2)); } HidePen(); } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XFillPolygon -- * * Draws a filled polygon. * * Results: * None. * * Side effects: * Draws a filled polygon on the specified drawable. * *---------------------------------------------------------------------- */ void XFillPolygon( Display* display, /* Display. */ Drawable d, /* Draw on this. */ GC gc, /* Use this GC. */ XPoint* points, /* Array of points. */ int npoints, /* Number of points. */ int shape, /* Shape to draw. */ int mode) /* Drawing mode. */ { MacDrawable *macWin = (MacDrawable *) d; PolyHandle polygon; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; int i; destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); if (useCGDrawing) { CGContextRef outContext; TkMacOSXSetUpCGContext(macWin, destPort, gc, &outContext); CGContextBeginPath(outContext); CGContextMoveToPoint(outContext, (float) (points[0].x), (float) (points[0].y)); for (i = 1; i < npoints; i++) { if (mode == CoordModePrevious) { CGContextAddLineToPoint(outContext, (float) points[i].x, (float) points[i].y); } else { } } //CGContextStrokePath(outContext); CGContextFillPath(outContext); TkMacOSXReleaseCGContext(macWin, destPort, &outContext); } else { TkMacOSXSetUpGraphicsPort(gc, destPort); PenNormal(); polygon = OpenPoly(); MoveTo((short) (macWin->xOff + points[0].x), (short) (macWin->yOff + points[0].y)); for (i = 1; i < npoints; i++) { if (mode == CoordModePrevious) { Line((short) (macWin->xOff + points[i].x), (short) (macWin->yOff + points[i].y)); } else { LineTo((short) (macWin->xOff + points[i].x), (short) (macWin->yOff + points[i].y)); } } ClosePoly(); FillCPoly(polygon, gPenPat); KillPoly(polygon); } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XDrawRectangle -- * * Draws a rectangle. * * Results: * None. * * Side effects: * Draws a rectangle on the specified drawable. * *---------------------------------------------------------------------- */ void XDrawRectangle( Display* display, /* Display. */ Drawable d, /* Draw on this. */ GC gc, /* Use this GC. */ int x, /* Upper left corner. */ int y, unsigned int width, /* Width & height of rect. */ unsigned int height) { MacDrawable *macWin = (MacDrawable *) d; Rect theRect; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); TkMacOSXSetUpGraphicsPort(gc, destPort); theRect.left = (short) (macWin->xOff + x); theRect.top = (short) (macWin->yOff + y); theRect.right = (short) (theRect.left + width); theRect.bottom = (short) (theRect.top + height); ShowPen(); PenPixPat(gPenPat); FrameRect(&theRect); HidePen(); SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XDrawRectangles -- * * Draws the outlines of the specified rectangles as if a * five-point PolyLine protocol request were specified for each * rectangle: * * [x,y] [x+width,y] [x+width,y+height] [x,y+height] * [x,y] * * For the specified rectangles, these functions do not draw a * pixel more than once. XDrawRectangles draws the rectangles in * the order listed in the array. If rectangles intersect, the * intersecting pixels are drawn multiple times. Draws a * rectangle. * * Results: * None. * * Side effects: * Draws rectangles on the specified drawable. * *---------------------------------------------------------------------- */ void XDrawRectangles( Display *display, Drawable drawable, GC gc, XRectangle *rectArr, int nRects) { MacDrawable *macWin = (MacDrawable *) drawable; Rect rect; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; XRectangle * rectPtr; int i; destPort = TkMacOSXGetDrawablePort(drawable); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(drawable); TkMacOSXSetUpGraphicsPort(gc, destPort); ShowPen(); PenPixPat(gPenPat); for (i = 0, rectPtr = rectArr; i < nRects;i++, rectPtr++ ) { rect.left = (short) (macWin->xOff + rectPtr->x); rect.top = (short) (macWin->yOff + rectPtr->y); rect.right = (short) (rect.left + rectPtr->width); rect.bottom = (short) (rect.top + rectPtr->height); FrameRect(&rect); } HidePen(); SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XDrawArc -- * * Draw an arc. * * Results: * None. * * Side effects: * Draws an arc on the specified drawable. * *---------------------------------------------------------------------- */ void XDrawArc( Display* display, /* Display. */ Drawable d, /* Draw on this. */ GC gc, /* Use this GC. */ int x, /* Upper left of */ int y, /* bounding rect. */ unsigned int width, /* Width & height. */ unsigned int height, int angle1, /* Staring angle of arc. */ int angle2) /* Ending angle of arc. */ { MacDrawable *macWin = (MacDrawable *) d; Rect theRect; short start, extent; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; float fX = (float) x, fY = (float) y, fWidth = (float) width, fHeight = (float) height; if (width == 0 || height == 0) { return; } destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); if (useCGDrawing) { CGContextRef outContext; CGAffineTransform transform; int clockwise = angle1 ? 0 : 1; TkMacOSXSetUpCGContext(macWin, destPort, gc, &outContext); CGContextBeginPath(outContext); /* * If we are drawing an oval, we have to squash the coordinate * system before drawing, since CGContextAddArcToPoint only draws * circles. */ CGContextSaveGState(outContext); transform = CGAffineTransformMakeTranslation((float) (x + width/2), (float) (y + height/2)); transform = CGAffineTransformScale(transform, 1.0, fHeight/fWidth); CGContextConcatCTM(outContext, transform); CGContextAddArc(outContext, 0.0, 0.0, (float) width/2, (float) angle1, (float) angle2, clockwise); CGContextRestoreGState(outContext); CGContextStrokePath(outContext); TkMacOSXReleaseCGContext(macWin, destPort, &outContext); } else { TkMacOSXSetUpGraphicsPort(gc, destPort); theRect.left = (short) (macWin->xOff + x); theRect.top = (short) (macWin->yOff + y); theRect.right = (short) (theRect.left + width); theRect.bottom = (short) (theRect.top + height); start = (short) (90 - (angle1 / 64)); extent = (short) (-(angle2 / 64)); ShowPen(); PenPixPat(gPenPat); FrameArc(&theRect, start, extent); HidePen(); } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XDrawArcs -- * * Draws multiple circular or elliptical arcs. Each arc is * specified by a rectangle and two angles. The center of the * circle or ellipse is the center of the rect- angle, and the * major and minor axes are specified by the width and height. * Positive angles indicate counterclock- wise motion, and * negative angles indicate clockwise motion. If the magnitude * of angle2 is greater than 360 degrees, XDrawArcs truncates it * to 360 degrees. * * Results: * None. * * Side effects: * Draws an arc for each array element on the specified drawable. * *---------------------------------------------------------------------- */ void XDrawArcs( Display *display, Drawable d, GC gc, XArc *arcArr, int nArcs) { MacDrawable *macWin = (MacDrawable *) d; Rect rect; short start, extent; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; XArc * arcPtr; int i; destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); TkMacOSXSetUpGraphicsPort(gc, destPort); ShowPen(); PenPixPat(gPenPat); for (i = 0, arcPtr = arcArr;i < nArcs;i++, arcPtr++ ) { rect.left = (short) (macWin->xOff + arcPtr->x); rect.top = (short) (macWin->yOff + arcPtr->y); rect.right = (short) (rect.left + arcPtr->width); rect.bottom = (short) (rect.top + arcPtr->height); start = (short) (90 - (arcPtr->angle1 / 64)); extent = (short) (-(arcPtr->angle2 / 64)); FrameArc(&rect, start, extent); } HidePen(); SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XFillArc -- * * Draw a filled arc. * * Results: * None. * * Side effects: * Draws a filled arc on the specified drawable. * *---------------------------------------------------------------------- */ void XFillArc( Display* display, /* Display. */ Drawable d, /* Draw on this. */ GC gc, /* Use this GC. */ int x, /* Upper left of */ int y, /* bounding rect. */ unsigned int width, /* Width & height. */ unsigned int height, int angle1, /* Staring angle of arc. */ int angle2) /* Ending angle of arc. */ { MacDrawable *macWin = (MacDrawable *) d; Rect theRect; short start, extent; PolyHandle polygon; double sin1, cos1, sin2, cos2, angle; double boxWidth, boxHeight; double vertex[2], center1[2], center2[2]; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); TkMacOSXSetUpGraphicsPort(gc, destPort); theRect.left = (short) (macWin->xOff + x); theRect.top = (short) (macWin->yOff + y); theRect.right = (short) (theRect.left + width); theRect.bottom = (short) (theRect.top + height); start = (short) (90 - (angle1 / 64)); extent = (short) (- (angle2 / 64)); if (gc->arc_mode == ArcChord) { boxWidth = theRect.right - theRect.left; boxHeight = theRect.bottom - theRect.top; angle = -(angle1/64.0)*PI/180.0; sin1 = sin(angle); cos1 = cos(angle); angle -= (angle2/64.0)*PI/180.0; sin2 = sin(angle); cos2 = cos(angle); vertex[0] = (theRect.left + theRect.right)/2.0; vertex[1] = (theRect.top + theRect.bottom)/2.0; center1[0] = vertex[0] + cos1*boxWidth/2.0; center1[1] = vertex[1] + sin1*boxHeight/2.0; center2[0] = vertex[0] + cos2*boxWidth/2.0; center2[1] = vertex[1] + sin2*boxHeight/2.0; polygon = OpenPoly(); MoveTo((short) ((theRect.left + theRect.right)/2), (short) ((theRect.top + theRect.bottom)/2)); LineTo((short) (center1[0] + 0.5), (short) (center1[1] + 0.5)); LineTo((short) (center2[0] + 0.5), (short) (center2[1] + 0.5)); ClosePoly(); ShowPen(); FillCArc(&theRect, start, extent, gPenPat); FillCPoly(polygon, gPenPat); HidePen(); KillPoly(polygon); } else { ShowPen(); FillCArc(&theRect, start, extent, gPenPat); HidePen(); } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XFillArcs -- * * Draw a filled arc. * * Results: * None. * * Side effects: * Draws a filled arc for each array element on the specified drawable. * *---------------------------------------------------------------------- */ void XFillArcs( Display *display, Drawable d, GC gc, XArc *arcArr, int nArcs) { MacDrawable *macWin = (MacDrawable *) d; Rect rect; short start, extent; PolyHandle polygon; double sin1, cos1, sin2, cos2, angle; double boxWidth, boxHeight; double vertex[2], center1[2], center2[2]; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; int i; XArc * arcPtr; destPort = TkMacOSXGetDrawablePort(d); display->request++; GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(d); TkMacOSXSetUpGraphicsPort(gc, destPort); for (i = 0, arcPtr = arcArr;ixOff + arcPtr->x); rect.top = (short) (macWin->yOff + arcPtr->y); rect.right = (short) (rect.left + arcPtr->width); rect.bottom = (short) (rect.top + arcPtr->height); start = (short) (90 - (arcPtr->angle1 / 64)); extent = (short) (- (arcPtr->angle2 / 64)); if (gc->arc_mode == ArcChord) { boxWidth = rect.right - rect.left; boxHeight = rect.bottom - rect.top; angle = -(arcPtr->angle1/64.0)*PI/180.0; sin1 = sin(angle); cos1 = cos(angle); angle -= (arcPtr->angle2/64.0)*PI/180.0; sin2 = sin(angle); cos2 = cos(angle); vertex[0] = (rect.left + rect.right)/2.0; vertex[1] = (rect.top + rect.bottom)/2.0; center1[0] = vertex[0] + cos1*boxWidth/2.0; center1[1] = vertex[1] + sin1*boxHeight/2.0; center2[0] = vertex[0] + cos2*boxWidth/2.0; center2[1] = vertex[1] + sin2*boxHeight/2.0; polygon = OpenPoly(); MoveTo((short) ((rect.left + rect.right)/2), (short) ((rect.top + rect.bottom)/2)); LineTo((short) (center1[0] + 0.5), (short) (center1[1] + 0.5)); LineTo((short) (center2[0] + 0.5), (short) (center2[1] + 0.5)); ClosePoly(); ShowPen(); FillCArc(&rect, start, extent, gPenPat); FillCPoly(polygon, gPenPat); HidePen(); KillPoly(polygon); } else { ShowPen(); FillCArc(&rect, start, extent, gPenPat); HidePen(); } } SetGWorld(saveWorld, saveDevice); } /* *---------------------------------------------------------------------- * * XMaxRequestSize -- * *---------------------------------------------------------------------- */ long XMaxRequestSize(Display *display) { return (SHRT_MAX / 4); } /* *---------------------------------------------------------------------- * * TkScrollWindow -- * * Scroll a rectangle of the specified window and accumulate * a damage region. * * Results: * Returns 0 if the scroll genereated no additional damage. * Otherwise, sets the region that needs to be repainted after * scrolling and returns 1. * * Side effects: * Scrolls the bits in the window. * *---------------------------------------------------------------------- */ int TkScrollWindow( Tk_Window tkwin, /* The window to be scrolled. */ GC gc, /* GC for window to be scrolled. */ int x, /* Position rectangle to be scrolled. */ int y, int width, int height, int dx, /* Distance rectangle should be moved. */ int dy, TkRegion damageRgn) /* Region to accumulate damage in. */ { MacDrawable *destDraw = (MacDrawable *) Tk_WindowId(tkwin); RgnHandle rgn = (RgnHandle) damageRgn; CGrafPtr saveWorld; GDHandle saveDevice; GWorldPtr destPort; Rect srcRect, scrollRect; RgnHandle visRgn, clipRgn; destPort = TkMacOSXGetDrawablePort(Tk_WindowId(tkwin)); GetGWorld(&saveWorld, &saveDevice); SetGWorld(destPort, NULL); TkMacOSXSetUpClippingRgn(Tk_WindowId(tkwin)); /* * Due to the implementation below the behavior may be differnt * than X in certain cases that should never occur in Tk. The * scrollRect is the source rect extended by the offset (the union * of the source rect and the offset rect). Everything * in the extended scrollRect is scrolled. On X, it's possible * to "skip" over an area if the offset makes the source and * destination rects disjoint and non-aligned. */ SetRect(&srcRect, (short) (destDraw->xOff + x), (short) (destDraw->yOff + y), (short) (destDraw->xOff + x + width), (short) (destDraw->yOff + y + height)); scrollRect = srcRect; if (dx < 0) { scrollRect.left += dx; } else { scrollRect.right += dx; } if (dy < 0) { scrollRect.top += dy; } else { scrollRect.bottom += dy; } /* * Adjust clip region so that we don't copy any windows * that may overlap us. */ visRgn = NewRgn(); clipRgn = NewRgn(); RectRgn(rgn, &srcRect); GetPortVisibleRegion(destPort,visRgn); DiffRgn(rgn, visRgn, rgn); OffsetRgn(rgn, dx, dy); GetPortClipRegion(destPort, clipRgn); DiffRgn(clipRgn, rgn, clipRgn); SetPortClipRegion(destPort, clipRgn); SetEmptyRgn(rgn); /* * When a menu is up, the Mac does not expect drawing to occur and * does not clip out the menu. We have to do it ourselves. This * is pretty gross. */ if (tkUseMenuCascadeRgn == 1) { Point scratch = {0, 0}; MacDrawable *macDraw = (MacDrawable *) Tk_WindowId(tkwin); LocalToGlobal(&scratch); CopyRgn(tkMenuCascadeRgn, rgn); OffsetRgn(rgn, -scratch.h, -scratch.v); DiffRgn(clipRgn, rgn, clipRgn); SetPortClipRegion(destPort, clipRgn); SetEmptyRgn(rgn); macDraw->toplevel->flags |= TK_DRAWN_UNDER_MENU; } ScrollRect(&scrollRect, dx, dy, rgn); SetGWorld(saveWorld, saveDevice); DisposeRgn(clipRgn); DisposeRgn(visRgn); /* * Fortunantly, the region returned by ScrollRect is symanticlly * the same as what we need to return in this function. If the * region is empty we return zero to denote that no damage was * created. */ if (EmptyRgn(rgn)) { return 0; } else { return 1; } } /* *---------------------------------------------------------------------- * * TkMacOSXSetUpGraphicsPort -- * * Set up the graphics port from the given GC. * * Results: * None. * * Side effects: * The current port is adjusted. * *---------------------------------------------------------------------- */ void TkMacOSXSetUpGraphicsPort( GC gc, GWorldPtr destPort) /* GC to apply to current port. */ { RGBColor macColor; if (gPenPat == NULL) { gPenPat = NewPixPat(); } if (TkSetMacColor(gc->foreground, &macColor) == true) { /* TODO: cache RGBPats for preformace - measure gains... */ MakeRGBPat(gPenPat, &macColor); } PenNormal(); if(gc->function == GXxor) { PenMode(patXor); } if (gc->line_width > 1) { PenSize(gc->line_width, gc->line_width); } if (gc->line_style != LineSolid) { unsigned char *p = (unsigned char *) &(gc->dashes); /* * Here the dash pattern should be set in the drawing, * environment, but I don't know how to do that for the Mac. * * p[] is an array of unsigned chars containing the dash list. * A '\0' indicates the end of this list. * * Someone knows how to implement this? If you have a more * complete implementation of SetUpGraphicsPort() for * the Mac (or for Windows), please let me know. * * Jan Nijtmans * CMG Arnhem, B.V. * email: j.nijtmans@chello.nl (private) * jan.nijtmans@cmg.nl (work) * url: http://purl.oclc.org/net/nijtmans/ * * FIXME: * This is not possible with QuickDraw line drawing, we either * have to convert all line drawings to regions, or, on Mac OS X * we can use CG to draw our lines instead of QuickDraw. */ } } /* *---------------------------------------------------------------------- * * TkMacOSXSetUpGraphicsPort -- * * Set up the graphics port from the given GC. * * Results: * None. * * Side effects: * The current port is adjusted. * *---------------------------------------------------------------------- */ void TkMacOSXSetUpCGContext( MacDrawable *macWin, CGrafPtr destPort, GC gc, CGContextRef *contextPtr) /* GC to apply to current port. */ { RGBColor macColor; CGContextRef outContext; OSStatus err; Rect boundsRect; CGAffineTransform coordsTransform; err = QDBeginCGContext(destPort, contextPtr); outContext = *contextPtr; CGContextSaveGState(outContext); GetPortBounds(destPort, &boundsRect); CGContextResetCTM(outContext); coordsTransform = CGAffineTransformMake(1.0, 0.0, 0.0, -1.0, 0, (float)(boundsRect.bottom - boundsRect.top)); CGContextConcatCTM(outContext, coordsTransform); if (macWin->clipRgn != NULL) { ClipCGContextToRegion(outContext, &boundsRect, macWin->clipRgn); } else { RgnHandle clipRgn = NewRgn(); GetPortClipRegion(destPort, clipRgn); ClipCGContextToRegion(outContext, &boundsRect, clipRgn); DisposeRgn(clipRgn); } /* Now offset the CTM to the subwindow offset */ CGContextTranslateCTM(outContext, macWin->xOff, macWin->yOff); if (TkSetMacColor(gc->foreground, &macColor) == true) { CGContextSetRGBStrokeColor(outContext, RGBFLOATRED(macColor), RGBFLOATGREEN(macColor), RGBFLOATBLUE(macColor), 1.0); } if (TkSetMacColor(gc->background, &macColor) == true) { CGContextSetRGBFillColor(outContext, RGBFLOATRED(macColor), RGBFLOATGREEN(macColor), RGBFLOATBLUE(macColor), 1.0); } if(gc->function == GXxor) { } CGContextSetLineWidth(outContext, (float) gc->line_width); if (gc->line_style != LineSolid) { unsigned char *p = (unsigned char *) &(gc->dashes); /* * Here the dash pattern should be set in the drawing, * environment, but I don't know how to do that for the Mac. * * p[] is an array of unsigned chars containing the dash list. * A '\0' indicates the end of this list. * * Someone knows how to implement this? If you have a more * complete implementation of SetUpGraphicsPort() for * the Mac (or for Windows), please let me know. * * Jan Nijtmans * CMG Arnhem, B.V. * email: j.nijtmans@chello.nl (private) * jan.nijtmans@cmg.nl (work) * url: http://purl.oclc.org/net/nijtmans/ * * FIXME: * This is not possible with QuickDraw line drawing, we either * have to convert all line drawings to regions, or, on Mac OS X * we can use CG to draw our lines instead of QuickDraw. */ } } void TkMacOSXReleaseCGContext( MacDrawable *macWin, CGrafPtr destPort, CGContextRef *outContext) { CGContextResetCTM(*outContext); CGContextRestoreGState(*outContext); QDEndCGContext(destPort, outContext); } /* *---------------------------------------------------------------------- * * TkMacOSXSetUpClippingRgn -- * * Set up the clipping region so that drawing only occurs on the * specified X subwindow. * * Results: * None. * * Side effects: * The clipping region in the current port is changed. * *---------------------------------------------------------------------- */ void TkMacOSXSetUpClippingRgn( Drawable drawable) /* Drawable to update. */ { MacDrawable *macDraw = (MacDrawable *) drawable; if (macDraw->winPtr != NULL) { if (macDraw->flags & TK_CLIP_INVALID) { TkMacOSXUpdateClipRgn(macDraw->winPtr); } /* * When a menu is up, the Mac does not expect drawing to occur and * does not clip out the menu. We have to do it ourselves. This * is pretty gross. */ if (macDraw->clipRgn != NULL) { if (tkUseMenuCascadeRgn == 1) { Point scratch = {0, 0}; GDHandle saveDevice; GWorldPtr saveWorld; GetGWorld(&saveWorld, &saveDevice); SetGWorld(TkMacOSXGetDrawablePort(drawable), NULL); LocalToGlobal(&scratch); SetGWorld(saveWorld, saveDevice); if (tmpRgn == NULL) { tmpRgn = NewRgn(); } CopyRgn(tkMenuCascadeRgn, tmpRgn); OffsetRgn(tmpRgn, -scratch.h, -scratch.v); DiffRgn(macDraw->clipRgn, tmpRgn, tmpRgn); SetClip(tmpRgn); macDraw->toplevel->flags |= TK_DRAWN_UNDER_MENU; } else { SetClip(macDraw->clipRgn); } } } } /* *---------------------------------------------------------------------- * * TkMacOSXMakeStippleMap -- * * Given a drawable and a stipple pattern this function draws the * pattern repeatedly over the drawable. The drawable can then * be used as a mask for bit-bliting a stipple pattern over an * object. * * Results: * A BitMap data structure. * * Side effects: * None. * *---------------------------------------------------------------------- */ BitMapPtr TkMacOSXMakeStippleMap( Drawable drawable, /* Window to apply stipple. */ Drawable stipple) /* The stipple pattern. */ { GWorldPtr destPort; BitMapPtr bitmapPtr; Rect portRect; int width, height, stippleHeight, stippleWidth; int i, j; char * data; Rect bounds; destPort = TkMacOSXGetDrawablePort(drawable); GetPortBounds ( destPort, &portRect ); width = portRect.right - portRect.left; height = portRect.bottom - portRect.top; bitmapPtr = (BitMap *) ckalloc(sizeof(BitMap)); data = (char *) ckalloc(height * ((width / 8) + 1)); bitmapPtr->bounds.top = bitmapPtr->bounds.left = 0; bitmapPtr->bounds.right = (short) width; bitmapPtr->bounds.bottom = (short) height; bitmapPtr->baseAddr = data; bitmapPtr->rowBytes = (width / 8) + 1; destPort = TkMacOSXGetDrawablePort(stipple); stippleWidth = portRect.right - portRect.left; stippleHeight = portRect.bottom - portRect.top; for (i = 0; i < height; i += stippleHeight) { for (j = 0; j < width; j += stippleWidth) { bounds.left = j; bounds.top = i; bounds.right = j + stippleWidth; bounds.bottom = i + stippleHeight; CopyBits(GetPortBitMapForCopyBits ( destPort ), bitmapPtr, &portRect, &bounds, srcCopy, NULL); } } return bitmapPtr; } /* *---------------------------------------------------------------------- * * InvertByte -- * * This function reverses the bits in the passed in Byte of data. * * Results: * The incoming byte in reverse bit order. * * Side effects: * None. * *---------------------------------------------------------------------- */ static unsigned char InvertByte( unsigned char data) /* Byte of data. */ { unsigned char i; unsigned char mask = 1, result = 0; for (i = (1 << 7); i != 0; i /= 2) { if (data & mask) { result |= i; } mask = mask << 1; } return result; } /* *---------------------------------------------------------------------- * * TkpDrawpHighlightBorder -- * * This procedure draws a rectangular ring around the outside of * a widget to indicate that it has received the input focus. * * On the Macintosh, this puts a 1 pixel border in the bgGC color * between the widget and the focus ring, except in the case where * highlightWidth is 1, in which case the border is left out. * * For proper Mac L&F, use highlightWidth of 3. * * Results: * None. * * Side effects: * A rectangle "width" pixels wide is drawn in "drawable", * corresponding to the outer area of "tkwin". * *---------------------------------------------------------------------- */ void TkpDrawHighlightBorder ( Tk_Window tkwin, GC fgGC, GC bgGC, int highlightWidth, Drawable drawable) { if (highlightWidth == 1) { TkDrawInsetFocusHighlight (tkwin, fgGC, highlightWidth, drawable, 0); } else { TkDrawInsetFocusHighlight (tkwin, bgGC, highlightWidth, drawable, 0); if (fgGC != bgGC) { TkDrawInsetFocusHighlight (tkwin, fgGC, highlightWidth - 1, drawable, 0); } } }