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/*
here are the different initialisation routines for different displays
Copyright (C) 1999 Martin Vogt
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#include "initDisplay.h"
#include <iostream>
using namespace std;
static unsigned long wpixel[256];
/*
*--------------------------------------------------------------
*
* InitColorDisplay --
*
* Initialized display for full color output.
*
* Results:
* None.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
void initColorDisplay(XWindow* xwindow) {
XWindowAttributes winattr;
XGetWindowAttributes(xwindow->display, xwindow->window, &winattr);
xwindow->redMask = winattr.visual->red_mask;
xwindow->greenMask = winattr.visual->green_mask;
xwindow->blueMask = winattr.visual->blue_mask;
}
/*
*--------------------------------------------------------------
*
* FindFullColorVisual
*
* Returns a pointer to a full color bit visual on the display
*
* Results:
* See above.
*
* Side effects:
* Unknown.
*
*--------------------------------------------------------------
*/
Visual* FindFullColorVisual (Display* dpy,int* depth) {
XVisualInfo vinfo;
XVisualInfo *vinfo_ret;
int numitems, maxdepth;
#if defined(__cplusplus) || defined(c_plusplus)
vinfo.c_class = TrueColor;
#else
vinfo.class = TrueColor;
#endif
vinfo_ret = XGetVisualInfo(dpy, VisualClassMask, &vinfo, &numitems);
if (numitems == 0) return NULL;
maxdepth = 0;
while(numitems > 0) {
if (vinfo_ret[numitems-1].depth > maxdepth) {
maxdepth = vinfo_ret[numitems-1 ].depth;
}
numitems--;
}
XFree((void *) vinfo_ret);
if (maxdepth < 16) return NULL;
if (XMatchVisualInfo(dpy, DefaultScreen(dpy), maxdepth,
TrueColor, &vinfo)) {
*depth = maxdepth;
return vinfo.visual;
}
return NULL;
}
/*
*--------------------------------------------------------------
*
* CreateFullColorWindow
*
* Creates a window capable of handling 32 bit color.
*
* Results:
* See above.
*
* Side effects:
* Unknown.
*
*--------------------------------------------------------------
*/
void CreateFullColorWindow (XWindow* xwindow) {
int depth;
Visual *visual;
XSetWindowAttributes xswa;
unsigned long mask;
unsigned int c_class;
int screen;
Display *dpy=xwindow->display;
/*
int x = xinfo->hints.x,
y = xinfo->hints.y;
unsigned int w = xinfo->hints.width,
h = xinfo->hints.height;
*/
screen = XDefaultScreen(dpy);
c_class = InputOutput; /* Could be InputOnly */
if (xwindow->visual == NULL) {
xwindow->visual = visual = FindFullColorVisual (dpy, &depth);
xwindow->depth = depth;
} else {
visual=xwindow->visual;
depth=xwindow->depth;
}
if (visual == NULL) {
cout << "visual is null"<<endl;
return;
}
mask = CWBackPixel | CWColormap | CWBorderPixel;
if (xwindow->colormap==0) {
xswa.colormap = XCreateColormap(dpy,
XRootWindow(dpy, screen),
visual, AllocNone);
} else xswa.colormap = xwindow->colormap;
xswa.background_pixel = BlackPixel(dpy, DefaultScreen(dpy));
xswa.border_pixel = WhitePixel(dpy, DefaultScreen(dpy));
XSetWindowColormap(xwindow->display,xwindow->window,xwindow->colormap);
/*
xwindow->window = XCreateWindow(dpy, RootWindow(dpy, screen), x, y, w, h,
(unsigned int) 1, depth, c_class,
visual, mask, &xswa);
*/
}
/*
*--------------------------------------------------------------
*
* InitSimpleDisplay --
*
* Initialized display, sets up colormap, etc. Use for 8 Bit color
*
* Results:
* None.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
void initSimpleDisplay(XWindow* xwindow) {
int ncolors = LUM_RANGE*CB_RANGE*CR_RANGE;
XColor xcolor;
int i, lum_num, cr_num, cb_num;
unsigned char r, g, b;
Colormap dcmap;
Display *display;
ColorTable8Bit colorTable8Bit;
display = xwindow->display;
xwindow->colormap = XDefaultColormap(display, DefaultScreen(display));
dcmap = xwindow->colormap;
xcolor.flags = DoRed | DoGreen | DoBlue;
//if (xinfo->owncmFlag) goto create_map;
retry_alloc_colors:
for (i=0; i<ncolors; i++) {
lum_num = (i / (CR_RANGE*CB_RANGE))%LUM_RANGE;
cr_num = (i / CB_RANGE)%CR_RANGE;
cb_num = i % CB_RANGE;
colorTable8Bit.ConvertColor(lum_num, cr_num, cb_num, &r, &g, &b);
xcolor.red = r * 256;
xcolor.green = g * 256;
xcolor.blue = b * 256;
if ((XAllocColor(display,xwindow->colormap , &xcolor) == 0
&& xwindow->colormap == dcmap)) {
int j;
unsigned long tmp_pixel;
XWindowAttributes xwa;
// Free colors.
for (j = 0; j < i; j ++) {
tmp_pixel = wpixel[j];
XFreeColors(display,xwindow->colormap , &tmp_pixel, 1, 0);
}
//create_map:
XGetWindowAttributes(display, xwindow->window, &xwa);
xwindow->colormap = XCreateColormap(display, xwindow->window,
xwa.visual, AllocNone);
XSetWindowColormap(display, xwindow->window,xwindow->colormap );
goto retry_alloc_colors;
}
xwindow->pixel[i]=xcolor.pixel;
wpixel[i] = xcolor.pixel;
}
}
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