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/* Copyright (C) 2000 Free Software Foundation
This file is part of libgcj.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <gcj/cni.h>
#include <gnu/gcj/xlib/Visual.h>
#include <gnu/gcj/xlib/Screen.h>
#include <gnu/gcj/xlib/Display.h>
#include <gnu/gcj/xlib/XException.h>
#include <gnu/gcj/RawData.h>
using namespace gnu::gcj;
void gnu::gcj::xlib::Visual::init(RawData* visual, jint depth)
{
XVisualInfo* info = new XVisualInfo;
xVisualInfo = reinterpret_cast<gnu::gcj::RawData*>(info);
infoMask = 0;
if (visual != 0)
{
::Visual* visualStructure = (::Visual*) visual;
info->visual = visualStructure;
info->visualid = XVisualIDFromVisual(visualStructure);
infoMask |= MASK_ID | MASK_VISUAL_STRUCTURE;
}
if (depth != 0)
{
info->depth = depth;
infoMask |= MASK_DEPTH;
}
}
void gnu::gcj::xlib::Visual::finalize()
{
if (xVisualInfo != 0)
{
delete xVisualInfo;
xVisualInfo = 0;
}
}
RawData* gnu::gcj::xlib::Visual::getVisualStructure()
{
ensureXVisualInfo(MASK_ALL); // Make sure structure is set
XVisualInfo* info = (XVisualInfo*) xVisualInfo;
return reinterpret_cast<gnu::gcj::RawData*>(info->visual);
}
jint gnu::gcj::xlib::Visual::getRedMask()
{
ensureXVisualInfo(MASK_RED);
XVisualInfo* info = (XVisualInfo*) xVisualInfo;
return info->red_mask;
}
jint gnu::gcj::xlib::Visual::getGreenMask()
{
ensureXVisualInfo(MASK_GREEN);
XVisualInfo* info = (XVisualInfo*) xVisualInfo;
return info->green_mask;
}
jint gnu::gcj::xlib::Visual::getBlueMask()
{
ensureXVisualInfo(MASK_BLUE);
XVisualInfo* info = (XVisualInfo*) xVisualInfo;
return info->blue_mask;
}
jint gnu::gcj::xlib::Visual::getScreenNumber()
{
if (screen != 0)
return screen->getScreenNumber();
ensureXVisualInfo(MASK_SCREEN);
XVisualInfo* info = (XVisualInfo*) xVisualInfo;
return info->screen;
}
jint gnu::gcj::xlib::Visual::getDepth()
{
ensureXVisualInfo(MASK_DEPTH);
XVisualInfo* info = (XVisualInfo*) xVisualInfo;
return info->depth;
}
jint gnu::gcj::xlib::Visual::getVisualClass()
{
ensureXVisualInfo(MASK_CLASS);
::XVisualInfo* info = (::XVisualInfo*) xVisualInfo;
return info->c_class;
}
void gnu::gcj::xlib::Visual::ensureXVisualInfo(jint requiredMask)
{
int missingInformation = ~infoMask;
if ((missingInformation & requiredMask) == 0)
return;
// We need more info...
XVisualInfo* info = (XVisualInfo*) xVisualInfo;
// Store everything we know into template
if (screen != 0)
{
info->screen = screen->getScreenNumber();
infoMask |= MASK_SCREEN;
}
// Aquire info using the current info as template for matching
::Display* dpy = (::Display*) display->display;
int visualInfoCount;
long mask = infoMask & MASK_ALL & (~MASK_VISUAL_STRUCTURE);
XVisualInfo* matches = XGetVisualInfo(dpy, mask,
info, &visualInfoCount);
if (matches != 0)
{
(*info) = matches[0];
// redundant?
xVisualInfo = reinterpret_cast<gnu::gcj::RawData*>(info);
infoMask = ~0; // ALL
XFree(matches);
}
else
{
char msg[] =
"XGetVisualInfo failed to find any matching visuals. The template "
"describes a combination of properties that does not exist on "
"this X server.";
throw new XException(JvNewStringLatin1(msg));
}
}
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