VNCviewGS/copyrect.cc
Stephen Heumann d281a30f98 Use less ugly (and faster) code for content origin calculations.
Specifically, use a union rather than pointer-based type punning to convert the Long value returned by GetContentOrigin() to a Point. This makes for more readable code and should also generate somewhat better assembly code.
2016-05-28 23:58:04 -05:00

75 lines
2.0 KiB
C++

#if __ORCAC__
#pragma lint -1
#pragma noroot
segment "VNCview GS";
#endif
#include <window.h>
#include <quickdraw.h>
#include <qdaux.h>
#include <desk.h>
#include <memory.h>
#include <resources.h>
#include <tcpip.h>
#include <menu.h>
#include <control.h>
#include <misctool.h>
#include <scrap.h>
#include <stdio.h>
#include <stdlib.h>
#include <event.h>
#include <limits.h>
#include "vncsession.h"
#include "vncview.h"
#include "vncdisplay.h"
#include "colortables.h"
#include "menus.h"
#include "clipboard.h"
#include "desktopsize.h"
#include "mouse.h"
#include "keyboard.h"
#include "copyrect.h"
#include "raw.h"
#include "hextile.h"
void DoCopyRect (void) {
/* For use with GetContentOrigin() */
Origin contentOrigin;
Rect srcRect;
unsigned int *dataPtr; /* Pointer to TCP data that was read */
//printf("Processing CopyRect rectangle\n");
if (! DoReadTCP ((unsigned long) 4))
return; /* Not ready yet; wait */
contentOrigin.l = GetContentOrigin(vncWindow);
dataPtr = (unsigned int *) ((char *) (*readBufferHndl));
srcRect.h1 = SwapBytes2(dataPtr[0]) - contentOrigin.pt.h;
srcRect.v1 = SwapBytes2(dataPtr[1]) - contentOrigin.pt.v;
srcRect.h2 = srcRect.h1 + rectWidth;
srcRect.v2 = srcRect.v1 + rectHeight;
/* Check that the source rect is actually visible; if not, ask the server
to send the update using some other encoding.
*/
if (!RectInRgn(&srcRect, GetVisHandle())) {
SendFBUpdateRequest(FALSE, rectX, rectY, rectWidth, rectHeight);
goto done;
}
/* We can use the window pointer as a LocInfo pointer because it starts
* with a grafPort structure, which in turn starts with a LocInfo structure.
*/
PPToPort((struct LocInfo *) vncWindow, &srcRect,
rectX - contentOrigin.pt.h, rectY - contentOrigin.pt.v, modeCopy);
done:
NextRect(); /* Prepare for next rect */
}