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Diffstat (limited to 'mac/tkMacDraw.c')
| -rw-r--r-- | mac/tkMacDraw.c | 1130 |
1 files changed, 1130 insertions, 0 deletions
diff --git a/mac/tkMacDraw.c b/mac/tkMacDraw.c new file mode 100644 index 0000000..9624041 --- /dev/null +++ b/mac/tkMacDraw.c @@ -0,0 +1,1130 @@ +/* + * tkMacDraw.c -- + * + * This file contains functions that preform drawing to + * Xlib windows. Most of the functions simple emulate + * Xlib functions. + * + * Copyright (c) 1995-1997 Sun Microsystems, Inc. + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * SCCS: @(#) tkMacDraw.c 1.55 97/11/20 18:28:56 + */ + +#include "tkInt.h" +#include "X.h" +#include "Xlib.h" +#include <stdio.h> +#include <tcl.h> + +#include <Windows.h> +#include <Fonts.h> +#include <QDOffscreen.h> +#include "tkMacInt.h" + +#ifndef PI +# define PI 3.14159265358979323846 +#endif + +/* + * Temporary regions that can be reused. + */ +static RgnHandle tmpRgn = NULL; +static RgnHandle tmpRgn2 = NULL; + +static PixPatHandle gPenPat = NULL; + +/* + * Prototypes for functions used only in this file. + */ +static unsigned char InvertByte _ANSI_ARGS_((unsigned char data)); + +/* + *---------------------------------------------------------------------- + * + * 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 dest, /* 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, destRect; + BitMapPtr srcBit, destBit; + MacDrawable *srcDraw = (MacDrawable *) src; + MacDrawable *destDraw = (MacDrawable *) dest; + GWorldPtr srcPort, destPort; + CGrafPtr saveWorld; + GDHandle saveDevice; + short tmode; + RGBColor origForeColor, origBackColor, whiteColor, blackColor; + + destPort = TkMacGetDrawablePort(dest); + srcPort = TkMacGetDrawablePort(src); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, 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); + + + TkMacSetUpClippingRgn(dest); + + /* + * We will change the clip rgn in this routine, so we need to + * be able to restore it when we exit. + */ + + if (tmpRgn2 == NULL) { + tmpRgn2 = NewRgn(); + } + GetClip(tmpRgn2); + + 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(); + } + + xOffset = destDraw->xOff + gc->clip_x_origin; + yOffset = destDraw->yOff + gc->clip_y_origin; + + OffsetRgn(clipRgn, xOffset, yOffset); + + GetClip(tmpRgn); + SectRgn(tmpRgn, clipRgn, tmpRgn); + + SetClip(tmpRgn); + + OffsetRgn(clipRgn, -xOffset, -yOffset); + } + + srcBit = &((GrafPtr) srcPort)->portBits; + destBit = &((GrafPtr) destPort)->portBits; + SetRect(&srcRect, (short) (srcDraw->xOff + src_x), + (short) (srcDraw->yOff + src_y), + (short) (srcDraw->xOff + src_x + width), + (short) (srcDraw->yOff + src_y + height)); + SetRect(&destRect, (short) (destDraw->xOff + dest_x), + (short) (destDraw->yOff + dest_y), + (short) (destDraw->xOff + dest_x + width), + (short) (destDraw->yOff + dest_y + height)); + tmode = srcCopy; + + CopyBits(srcBit, destBit, &srcRect, &destRect, 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 dest, /* 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, destRect; + BitMapPtr srcBit, destBit, maskBit; + MacDrawable *srcDraw = (MacDrawable *) src; + MacDrawable *destDraw = (MacDrawable *) dest; + GWorldPtr srcPort, destPort, maskPort; + CGrafPtr saveWorld; + GDHandle saveDevice; + RGBColor macColor; + TkpClipMask *clipPtr = (TkpClipMask*)gc->clip_mask; + short tmode; + + destPort = TkMacGetDrawablePort(dest); + srcPort = TkMacGetDrawablePort(src); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(dest); + + srcBit = &((GrafPtr) srcPort)->portBits; + destBit = &((GrafPtr) destPort)->portBits; + SetRect(&srcRect, (short) (srcDraw->xOff + src_x), + (short) (srcDraw->yOff + src_y), + (short) (srcDraw->xOff + src_x + width), + (short) (srcDraw->yOff + src_y + height)); + SetRect(&destRect, (short) (destDraw->xOff + dest_x), + (short) (destDraw->yOff + dest_y), + (short) (destDraw->xOff + dest_x + width), + (short) (destDraw->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, destBit, &srcRect, &destRect, tmode, NULL); + } else if (clipPtr->type == TKP_CLIP_PIXMAP) { + if (clipPtr->value.pixmap == src) { + /* + * Case 2: transparent bitmaps. If it's color we ignore + * the forecolor. + */ + if ((**(srcPort->portPixMap)).pixelSize == 1) { + tmode = srcOr; + } else { + tmode = transparent; + } + CopyBits(srcBit, destBit, &srcRect, &destRect, tmode, NULL); + } else { + /* + * Case 3: two arbitrary bitmaps. + */ + tmode = srcCopy; + maskPort = TkMacGetDrawablePort(clipPtr->value.pixmap); + maskBit = &((GrafPtr) maskPort)->portBits; + CopyDeepMask(srcBit, maskBit, destBit, &srcRect, &srcRect, &destRect, 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. */ +{ + MacDrawable *destDraw = (MacDrawable *) d; + CGrafPtr saveWorld; + GDHandle saveDevice; + GWorldPtr destPort; + int i, j; + BitMap bitmap; + char *newData = NULL; + Rect destRect, srcRect; + + destPort = TkMacGetDrawablePort(d); + SetRect(&destRect, dest_x, dest_y, dest_x + width, dest_y + height); + SetRect(&srcRect, src_x, src_y, src_x + width, src_y + height); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + 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; + } + + CopyBits(&bitmap, &((GrafPtr) destPort)->portBits, + &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 = 4; /* 32bit clean */ + pixmap.packType = 0; + pixmap.packSize = 0; + pixmap.hRes = 0x00480000; + pixmap.vRes = 0x00480000; + pixmap.pixelSize = 32; + pixmap.cmpCount = 3; + pixmap.cmpSize = 8; + pixmap.planeBytes = 0; + pixmap.pmTable = NULL; + pixmap.pmReserved = 0; + pixmap.baseAddr = image->data; + pixmap.rowBytes = image->bytes_per_line | 0x8000; + + CopyBits((BitMap *) &pixmap, &((GrafPtr) destPort)->portBits, + &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_rectangels) /* Number of rectangles. */ +{ + MacDrawable *macWin = (MacDrawable *) d; + CGrafPtr saveWorld; + GDHandle saveDevice; + GWorldPtr destPort; + Rect theRect; + int i; + + destPort = TkMacGetDrawablePort(d); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + TkMacSetUpGraphicsPort(gc); + + for (i=0; i<n_rectangels; 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 = TkMacGetDrawablePort(d); + + display->request++; + if (npoints < 2) { + return; /* TODO: generate BadValue error. */ + } + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + TkMacSetUpGraphicsPort(gc); + + 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)); + } + } + + 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 = TkMacGetDrawablePort(d); + + display->request++; + + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + TkMacSetUpGraphicsPort(gc); + + 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)); + } + + 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 = TkMacGetDrawablePort(d); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + TkMacSetUpGraphicsPort(gc); + + 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 = TkMacGetDrawablePort(d); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + TkMacSetUpGraphicsPort(gc); + + 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); + + 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; + + destPort = TkMacGetDrawablePort(d); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + TkMacSetUpGraphicsPort(gc); + + 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); + + 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 = TkMacGetDrawablePort(d); + + display->request++; + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(d); + + TkMacSetUpGraphicsPort(gc); + + 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); + + KillPoly(polygon); + } else { + ShowPen(); + FillCArc(&theRect, start, extent, gPenPat); + } + + SetGWorld(saveWorld, saveDevice); +} + +/* + *---------------------------------------------------------------------- + * + * 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; + + destPort = TkMacGetDrawablePort(Tk_WindowId(tkwin)); + + GetGWorld(&saveWorld, &saveDevice); + SetGWorld(destPort, NULL); + + TkMacSetUpClippingRgn(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. + */ + RectRgn(rgn, &srcRect); + DiffRgn(rgn, destPort->visRgn, rgn); + OffsetRgn(rgn, dx, dy); + DiffRgn(destPort->clipRgn, rgn, 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(destPort->clipRgn, rgn, destPort->clipRgn); + SetEmptyRgn(rgn); + macDraw->toplevel->flags |= TK_DRAWN_UNDER_MENU; + } + + ScrollRect(&scrollRect, dx, dy, rgn); + + SetGWorld(saveWorld, saveDevice); + + /* + * 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; + } +} + +/* + *---------------------------------------------------------------------- + * + * TkMacSetUpGraphicsPort -- + * + * Set up the graphics port from the given GC. + * + * Results: + * None. + * + * Side effects: + * The current port is adjusted. + * + *---------------------------------------------------------------------- + */ + +void +TkMacSetUpGraphicsPort( + GC gc) /* 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); + } +} + +/* + *---------------------------------------------------------------------- + * + * TkMacSetUpClippingRgn -- + * + * 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 +TkMacSetUpClippingRgn( + Drawable drawable) /* Drawable to update. */ +{ + MacDrawable *macDraw = (MacDrawable *) drawable; + + if (macDraw->winPtr != NULL) { + if (macDraw->flags & TK_CLIP_INVALID) { + TkMacUpdateClipRgn(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(TkMacGetDrawablePort(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); + } + } + } +} + +/* + *---------------------------------------------------------------------- + * + * TkMacMakeStippleMap -- + * + * 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 +TkMacMakeStippleMap( + Drawable drawable, /* Window to apply stipple. */ + Drawable stipple) /* The stipple pattern. */ +{ + MacDrawable *destDraw = (MacDrawable *) drawable; + GWorldPtr destPort; + BitMapPtr bitmapPtr; + int width, height, stippleHeight, stippleWidth; + int i, j; + char * data; + Rect bounds; + + destPort = TkMacGetDrawablePort(drawable); + width = destPort->portRect.right - destPort->portRect.left; + height = destPort->portRect.bottom - destPort->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 = TkMacGetDrawablePort(stipple); + stippleWidth = destPort->portRect.right - destPort->portRect.left; + stippleHeight = destPort->portRect.bottom - destPort->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(&((GrafPtr) destPort)->portBits, bitmapPtr, + &((GrafPtr) destPort)->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; +} |