mirror of
https://github.com/sheumann/VNCviewGS.git
synced 2024-11-25 06:31:36 +00:00
e1288f7e1b
DoReadTCP automatically disposes the old read buffer handle before doing the read, and then locks the new read buffer handle before returning. This removes the need for most explicit locking/unlocking of the handle. A macro is provided to dispose of the handle earlier (useful in a few cases where it may be big, and another read isn't immediately performed). Also, set displayInProgress to FALSE in NextRect, rather than in code for each encoding.
358 lines
11 KiB
C++
358 lines
11 KiB
C++
#if __ORCAC__
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#pragma lint -1
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#pragma noroot
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segment "VNCview GS";
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#endif
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#include <window.h>
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#include <quickdraw.h>
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#include <qdaux.h>
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#include <desk.h>
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#include <memory.h>
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#include <resources.h>
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#include <tcpip.h>
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#include <menu.h>
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#include <control.h>
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#include <misctool.h>
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#include <scrap.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <event.h>
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#include <limits.h>
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#include <orca.h>
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#include "vncsession.h"
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#include "vncview.h"
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#include "vncdisplay.h"
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#include "colortables.h"
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#include "menus.h"
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#include "clipboard.h"
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#include "desktopsize.h"
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#include "mouse.h"
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#include "keyboard.h"
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#include "copyrect.h"
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#include "raw.h"
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#include "hextile.h"
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unsigned int fbHeight;
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unsigned int fbWidth;
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BOOLEAN displayInProgress;
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static unsigned int numRects;
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unsigned int rectX;
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unsigned int rectY;
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unsigned int rectWidth;
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unsigned int rectHeight;
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static unsigned long rectEncoding;
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GrafPortPtr vncWindow;
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/* VNC session window dimensions */
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unsigned int winHeight;
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unsigned int winWidth;
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/* On the next 2 structs, only certain values are permanently zero.
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* Others are changed later.
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*/
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struct LocInfo srcLocInfo = {0, 0, 0, {0, 0, 0, 0} };
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/* Used by multiple encodings */
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Rect srcRect = {0, 0, 0, 0};
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unsigned char *pixTransTbl;
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BOOLEAN checkBounds = FALSE; /* Adjust drawing to stay in bounds */
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#define txtColor 10
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#define txtGray 11
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#define txtTransfers 23
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/* Send a request to be sent the data to redraw the window when part of it has
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* been erased. It will be a while before the data is fully redrawn, but this
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* is an unavoidable penalty of opening other windows over the main VNC window.
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*/
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#pragma databank 1
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static void VNCRedraw (void) {
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RegionHndl updateRgnHndl;
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updateRgnHndl = vncWindow->visRgn;
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SendFBUpdateRequest(FALSE,
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(**updateRgnHndl).rgnBBox.h1,
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(**updateRgnHndl).rgnBBox.v1,
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(**updateRgnHndl).rgnBBox.h2 - (**updateRgnHndl).rgnBBox.h1,
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(**updateRgnHndl).rgnBBox.v2 - (**updateRgnHndl).rgnBBox.v1);
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checkBounds = TRUE;
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}
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#pragma databank 0
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/* Change Super Hi-Res display to the specified resolution (640 or 320).
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* Uses the procedure described in IIgs Tech Note #4.
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*/
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static void ChangeResolution(int rez) {
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static Handle dpSpace;
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unsigned int masterSCB;
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hRez = rez;
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winHeight = WIN_HEIGHT;
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winWidth = (rez == 640) ? WIN_WIDTH_640 : WIN_WIDTH_320;
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/* Set up pixel translation table for correct graphics mode */
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if (rez == 320)
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pixTransTbl = coltab320;
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else /* 640 mode */
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pixTransTbl = coltab640;
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srcLocInfo.portSCB = (rez == 640) ? 0x87 : 0x00;
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/* Check if we need to change modes */
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masterSCB = GetMasterSCB();
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if ( ( (masterSCB & 0x80) && (rez == 640)) ||
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(!(masterSCB & 0x80) && (rez == 320)) ) {
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return; /* Already in right mode, so don't change things */
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}
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/* Perform the basic procedure described in IIgs TN #4 */
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CloseAllNDAs();
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QDAuxShutDown();
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QDShutDown();
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if (dpSpace == NULL)
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dpSpace = NewHandle(0x0300, userid(),
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attrLocked|attrFixed|attrNoCross|attrBank, 0x00000000);
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QDStartUp((Word) *dpSpace, (rez == 640) ? 0xC087 : 0xC000, 0, userid());
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/* SCB 0x87 gives 640 mode with our custom gray palette */
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GrafOff();
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QDAuxStartUp();
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ClampMouse(0, (rez == 640) ? 639 : 319, 0, 199);
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HomeMouse();
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ShowCursor();
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WindNewRes();
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InitPalette(); /* Set up Apple menu colors before it is redrawn */
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MenuNewRes();
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CtlNewRes();
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RefreshDesktop(NULL);
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GrafOn();
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/* Position new connection window at default location for new mode */
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if (rez == 320) {
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MoveControl(25, 64, GetCtlHandleFromID(newConnWindow, txtColor));
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MoveControl(25, 87, GetCtlHandleFromID(newConnWindow, txtGray));
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MoveControl(134, 91, GetCtlHandleFromID(newConnWindow, txtTransfers));
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MoveWindow(2, 42, newConnWindow);
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}
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else {
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MoveControl(35, 64, GetCtlHandleFromID(newConnWindow, txtColor));
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MoveControl(35, 87, GetCtlHandleFromID(newConnWindow, txtGray));
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MoveControl(144, 91, GetCtlHandleFromID(newConnWindow, txtTransfers));
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MoveWindow(162, 42, newConnWindow);
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}
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}
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/* Display the VNC session window, first changing to the appropriate
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* resolution (as specified by the user) if necessary.
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*/
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void InitVNCWindow(void) {
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#define wrNum640 1003
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#define wrNum320 1004
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BOOLEAN resize = FALSE;
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ChangeResolution(hRez);
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vncWindow = NewWindow2(NULL, 0, NULL, NULL, 0x02,
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(hRez == 640) ? wrNum640 : wrNum320,
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rWindParam1);
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if (fbWidth < winWidth) {
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winWidth = fbWidth;
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resize = TRUE;
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}
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if (fbHeight < winHeight) {
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winHeight = fbHeight;
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resize = TRUE;
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}
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if (resize)
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SizeWindow(winWidth, winHeight, vncWindow);
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SetContentDraw(VNCRedraw, vncWindow);
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SetDataSize(fbWidth, fbHeight, vncWindow);
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DrawControls(vncWindow);
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/* We also take the opportunity here to initialize the rectangle info. */
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numRects = 0;
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displayInProgress = FALSE;
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#undef wrNum320
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#undef wrNum640
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}
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/* Send a request to the VNC server to update the information for a portion of
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* the frame buffer.
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*/
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void SendFBUpdateRequest (BOOLEAN incremental, unsigned int x, unsigned int y,
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unsigned int width, unsigned int height) {
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struct FBUpdateRequest {
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unsigned char messageType;
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unsigned char incremental;
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unsigned int x;
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unsigned int y;
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unsigned int width;
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unsigned int height;
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} fbUpdateRequest = {3 /* Message type 3 */};
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fbUpdateRequest.incremental = !!incremental;
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fbUpdateRequest.x = SwapBytes2(x);
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fbUpdateRequest.y = SwapBytes2(y);
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fbUpdateRequest.width = SwapBytes2(width);
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fbUpdateRequest.height = SwapBytes2(height);
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TCPIPWriteTCP(hostIpid, &fbUpdateRequest.messageType,
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sizeof(fbUpdateRequest), TRUE, FALSE);
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/* No error checking here -- Can't respond to one usefully. */
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}
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/* Start responding to a FramebufferUpdate from the server
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*/
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static void DoFBUpdate (void) {
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unsigned int *dataPtr; /* Pointer to header data */
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if (!DoWaitingReadTCP(15)) {
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DoClose(vncWindow);
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//printf("Closing in DoFBUpdate\n");
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return;
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}
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dataPtr = (unsigned int *) (((char *) (*readBufferHndl)) + 1);
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numRects = SwapBytes2(dataPtr[0]); /* Get data */
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rectX = SwapBytes2(dataPtr[1]);
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rectY = SwapBytes2(dataPtr[2]);
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rectWidth = SwapBytes2(dataPtr[3]);
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rectHeight = SwapBytes2(dataPtr[4]);
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rectEncoding = SwapBytes4(*(unsigned long *)(dataPtr + 5));
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}
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/* The server should never send a color map, since we don't use a mapped
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* representation for pixel values. If a malfunctioning server tries to
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* send us one, though, we read and ignore it. This procedure could lock
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* up the system for several seconds or longer while reading data, which
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* would be bad but for the fact that it will never be called if the server
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* is actually working correctly.
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*/
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static void DoSetColourMapEntries (void) {
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unsigned int numColors;
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DoWaitingReadTCP(3);
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DoWaitingReadTCP(2);
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numColors = SwapBytes2((unsigned int) **readBufferHndl);
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for (; numColors > 0; numColors--) {
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DoWaitingReadTCP(6);
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}
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}
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/* Here when we're done processing one rectangle and ready to start the next.
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* If last FramebufferUpdate had multiple rectangles, we set up for next one.
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* If no more rectangles are available, we send a FramebufferUpdateRequest.
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*/
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void NextRect (void) {
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unsigned int *dataPtr;
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displayInProgress = FALSE;
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numRects--;
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if (numRects) { /* Process next rectangle */
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if (!DoWaitingReadTCP(12)) {
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//printf("Closing in NextRect\n");
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DoClose(vncWindow);
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return;
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}
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dataPtr = (unsigned int *) ((char *) (*readBufferHndl));
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rectX = SwapBytes2(dataPtr[0]);
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rectY = SwapBytes2(dataPtr[1]);
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rectWidth = SwapBytes2(dataPtr[2]);
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rectHeight = SwapBytes2(dataPtr[3]);
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rectEncoding = SwapBytes4(*(unsigned long *)(dataPtr + 4));
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//printf("New Rect: X = %u, Y = %u, Width = %u, Height = %u\n", rectX, rectY, rectWidth, rectHeight);
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}
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else { /* No more rectangles from last update */
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unsigned long contentOrigin;
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Point * contentOriginPtr = (void *) &contentOrigin;
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DoneWithReadBuffer();
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contentOrigin = GetContentOrigin(vncWindow);
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SendFBUpdateRequest(TRUE, contentOriginPtr->h, contentOriginPtr->v,
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winWidth, winHeight);
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}
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}
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void ConnectedEventLoop (void) {
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unsigned char messageType;
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#define FBUpdate 0
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#define SetColourMapEntries 1
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#define Bell 2
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#define ServerCutText 3
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if (FrontWindow() != vncWindow && menuOffset == noKB)
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InitMenus(0);
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else if (FrontWindow() == vncWindow && menuOffset != noKB)
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InitMenus(noKB);
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if (displayInProgress) {
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switch (rectEncoding) {
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case encodingRaw: RawDraw();
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return;
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case encodingHextile: HexDispatch();
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return;
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default: DoClose(vncWindow);
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return;
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}
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}
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else if (numRects) {
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switch (rectEncoding) {
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case encodingHextile:
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DoHextileRect();
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return;
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case encodingRaw: DoRawRect();
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return;
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case encodingCopyRect:
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DoCopyRect();
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return;
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case encodingDesktopSize:
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DoDesktopSize();
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return;
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case encodingCursor:
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DoCursor();
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return;
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default: DisplayConnectStatus (
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"\pInvalid rectangle from server.", FALSE);
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DoClose(vncWindow);
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//printf("Closing due to bad rectangle encoding %lu\n", rectEncoding);
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//printf("rectX = %u, rectY = %u, rectWidth = %u, rectHeight = %u\n", rectX, rectY, rectWidth, rectHeight);
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return;
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}
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}
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else if (DoReadTCP(1)) { /* Read message type byte */
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messageType = ((unsigned char) **readBufferHndl);
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switch (messageType) {
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case FBUpdate: DoFBUpdate();
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break;
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case SetColourMapEntries: DoSetColourMapEntries();
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break;
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case Bell: SysBeep();
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break;
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case ServerCutText: DoServerCutText();
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break;
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default: DisplayConnectStatus (
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"\pInvalid message from server.",
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FALSE);
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DoClose(vncWindow);
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return;
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}
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}
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}
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