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/*
SCREENRect.c
AUTHORS:
Allen.Ingling@nyu.edu awi
mario.kleiner.de@gmail.com mk
PLATFORMS:
All.
HISTORY:
1/14/03 awi Created.
11/14/08 mk Cleaned up.
*/
#include "Screen.h"
// If you change the useString then also change the corresponding synopsis string in ScreenSynopsis.c
static char useString[] = "rect=Screen('Rect', windowPointerOrScreenNumber [, realFBSize=0]);";
// 1 2
static char synopsisString[] =
"Get local rect of window, texture or screen. This has its top-left corner always at (0,0) "
"and encodes the useable size of the window or screen. E.g., in certain stereo "
"display modes or other special output modes, the actual useable window area for "
"stimulus drawing may be much smaller than the real area occupied by the window. "
"Example: In interleaved stereo modes, the effective useable height of a window "
"is only half the real height of the window. Use this function to get the actual "
"useable drawing area for a window or screen.\n"
"If the optional 'realFBSize' flag is set to 1, then the function returns the "
"real size of the windows framebuffer. This is mostly for Psychtoolbox internal "
"use, not for regular user-code.\n";
static char seeAlsoString[] = "";
PsychError SCREENRect(void)
{
PsychWindowRecordType *windowRecord;
int screenNumber;
PsychRectType rect;
long fbWidth, fbHeight;
int realFBSize = 0;
//all sub functions should have these two lines
PsychPushHelp(useString, synopsisString,seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check for superfluous arguments
PsychErrorExit(PsychCapNumInputArgs(2)); //The maximum number of inputs
PsychErrorExit(PsychRequireNumInputArgs(1)); //Insist that the argument be present.
PsychErrorExit(PsychCapNumOutputArgs(1)); //The maximum number of outputs
// Get optional 'realFBSize' flag: Defaults to zero.
PsychCopyInIntegerArg(2, FALSE, &realFBSize);
if (PsychIsScreenNumberArg(1)) {
PsychCopyInScreenNumberArg(1, TRUE, &screenNumber);
if (realFBSize) {
// Physical size in pixels:
PsychGetScreenPixelSize(screenNumber, &fbWidth, &fbHeight);
PsychMakeRect(rect, 0, 0, (double) fbWidth, (double) fbHeight);
}
else {
// Logical size in points:
PsychGetScreenRect(screenNumber, rect);
}
PsychCopyOutRectArg(1, FALSE, rect);
} else if (PsychIsWindowIndexArg(1)) {
PsychAllocInWindowRecordArg(1, TRUE, &windowRecord);
PsychOSProcessEvents(windowRecord, 0);
PsychCopyOutRectArg(1, FALSE, (realFBSize) ? windowRecord->rect : windowRecord->clientrect);
} else
PsychErrorExitMsg(PsychError_user, "Argument was recognized as neither a window index nor a screen pointer");
return(PsychError_none);
}
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