libjava/gnu/gcj/xlib/natGC.cc

   1 /* Copyright (C) 2000, 2003  Free Software Foundation
   2
   3    This file is part of libgcj.
   4
   5 This software is copyrighted work licensed under the terms of the
   6 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   7 details.  */
   8
   9 #include <vector>
  10
  11 #include <X11/Xlib.h>
  12
  13 #include <gcj/cni.h>
  14 #include <gcj/array.h>
  15 #include <gnu/gcj/RawData.h>
  16 #include <java/lang/String.h>
  17 #include <java/awt/Rectangle.h>
  18
  19 #include <gnu/gcj/xlib/Display.h>
  20 #include <gnu/gcj/xlib/XID.h>
  21 #include <gnu/gcj/xlib/Drawable.h>
  22 #include <gnu/gcj/xlib/Font.h>
  23 #include <gnu/gcj/xlib/XImage.h>
  24 #include <gnu/gcj/xlib/XException.h>
  25 #include <gnu/gcj/xlib/Clip.h>
  26 #include <gnu/gcj/xlib/GC.h>
  27 #include <gnu/gcj/xlib/XException.h>
  28
  29 typedef java::awt::Rectangle AWTRect;
  30 typedef JArray<AWTRect*> AWTRectArray;
  31 typedef std::vector<XRectangle> XRectVector;
  32
  33 void gnu::gcj::xlib::GC::initStructure(GC* copyFrom)
  34 {
  35   Display* display = target->getDisplay();
  36   ::Display* dpy = (::Display*) (display->display);
  37   ::GC gc = (::GC) structure;
  38   if (gc == 0)
  39   {
  40     // If we haven't already created a GC, create one now
  41     ::Drawable drawableXID = target->getXID();
  42     gc = XCreateGC(dpy, drawableXID, 0, 0);
  43     structure = reinterpret_cast<gnu::gcj::RawData*>(gc);
  44     if (gc == 0)
  45       throw new XException(JvNewStringLatin1("GC creation failed"));
  46   }
  47
  48   if (copyFrom != 0)
  49     {
  50       ::GC fromGC = (::GC) copyFrom->structure;
  51       XCopyGC(dpy, fromGC, ~0, gc);
  52       // no fast fail
  53     }
  54 }
  55
  56 void gnu::gcj::xlib::GC::disposeImpl()
  57 {
  58   gnu::gcj::RawData* lStructure = structure;
  59   Drawable* lTargetType = target;
  60
  61   if ((lStructure == 0) || (lTargetType == 0))
  62     return;
  63
  64   structure = 0;
  65   target = 0;
  66
  67   Display* display = lTargetType->getDisplay();
  68   ::Display* dpy = (::Display*) (display->display);
  69   ::GC gc = (::GC) lStructure;
  70
  71   XFreeGC(dpy, gc);
  72   // no fast fail
  73 }
  74
  75 void gnu::gcj::xlib::GC::setForeground(jlong pixel)
  76 {
  77   Display* display = target->getDisplay();
  78   ::Display* dpy = (::Display*) (display->display);
  79   ::GC gc = (::GC) structure;
  80   XSetForeground(dpy, gc, pixel);
  81   // no fast fail
  82 }
  83
  84 void gnu::gcj::xlib::GC::setFont(Font* font)
  85 {
  86   Display* display = target->getDisplay();
  87   ::Display* dpy = (::Display*) (display->display);
  88   ::GC gc = (::GC) structure;
  89   XSetFont(dpy, gc, font->getXID());
  90   // no fast fail
  91 }
  92
  93 void gnu::gcj::xlib::GC::drawString(jstring text, jint x, jint y)
  94 {
  95   Display* display = target->getDisplay();
  96   ::Display* dpy = (::Display*) (display->display);
  97   ::Drawable drawableXID = target->getXID();
  98   ::GC gc = (::GC) structure;
  99
 100   jint length = text->length();
 101   jchar* txt = JvGetStringChars(text);
 102
 103   XChar2b xwchars[length];
 104
 105   // FIXME: Convert to the character set used in the font, which may
 106   // or may not be unicode. For now, treat everything as 16-bit and
 107   // use character codes directly, which should be OK for unicode or
 108   // 8-bit ascii fonts.
 109
 110   for (int i=0; i<length; i++)
 111     {
 112       XChar2b* xc = &(xwchars[i]);
 113       jchar jc = txt[i];
 114       xc->byte1 = (jc >> 8) & 0xff;
 115       xc->byte2 = jc & 0xff;
 116     }
 117   XDrawString16(dpy, drawableXID, gc, x, y, xwchars, length);
 118 }
 119
 120 void gnu::gcj::xlib::GC::drawLine(jint x1, jint y1, jint x2, jint y2)
 121 {
 122   Display* display = target->getDisplay();
 123   ::Display* dpy = (::Display*) (display->display);
 124   ::Drawable drawableXID = target->getXID();
 125   ::GC gc = (::GC) structure;
 126   XDrawLine(dpy, drawableXID, gc, x1, y1, x2, y2);
 127   // no fast fail
 128 }
 129
 130 void gnu::gcj::xlib::GC::drawRectangle(jint x, jint y, jint w, jint h)
 131 {
 132   Display* display = target->getDisplay();
 133   ::Display* dpy = (::Display*) (display->display);
 134   ::Drawable drawableXID = target->getXID();
 135   ::GC gc = (::GC) structure;
 136   XDrawRectangle(dpy, drawableXID, gc, x, y, w, h);
 137   // no fast fail
 138 }
 139
 140 void gnu::gcj::xlib::GC::fillRectangle(jint x, jint y, jint w, jint h)
 141 {
 142   Display* display = target->getDisplay();
 143   ::Display* dpy = (::Display*) (display->display);
 144   ::Drawable drawableXID = target->getXID();
 145   ::GC gc = (::GC) structure;
 146   XFillRectangle(dpy, drawableXID, gc, x, y, w, h);
 147   // no fast fail
 148 }
 149
 150 void gnu::gcj::xlib::GC::drawArc(jint x, jint y, jint w, jint h,jint startAngle, jint arcAngle)
 151 {
 152   Display* display = target->getDisplay();
 153   ::Display* dpy = (::Display*) (display->display);
 154   ::Drawable drawableXID = target->getXID();
 155   ::GC gc = (::GC) structure;
 156   XDrawArc(dpy, drawableXID, gc, x, y, w, h, startAngle * 64, arcAngle * 64);
 157 }
 158
 159 void gnu::gcj::xlib::GC::fillArc(jint x, jint y, jint w, jint h,jint startAngle, jint arcAngle)
 160 {
 161   Display* display = target->getDisplay();
 162   ::Display* dpy = (::Display*) (display->display);
 163   ::Drawable drawableXID = target->getXID();
 164   ::GC gc = (::GC) structure;
 165   XFillArc(dpy, drawableXID, gc, x, y, w, h, startAngle * 64, arcAngle * 64);
 166 }
 167
 168 void gnu::gcj::xlib::GC::fillPolygon(jintArray xPoints, jintArray yPoints,
 169                                      jint nPoints,
 170                                      jint translateX, jint translateY)
 171 {
 172   Display* display = target->getDisplay();
 173   ::Display* dpy = (::Display*) (display->display);
 174   ::Drawable drawableXID = target->getXID();
 175   ::GC gc = (::GC) structure;
 176   typedef ::XPoint xpoint;
 177   std::vector<xpoint> points(nPoints+1);
 178   for (int i=0; i<nPoints; i++)
 179     {
 180       points[i].x = elements(xPoints)[i] + translateX;
 181       points[i].y = elements(yPoints)[i] + translateY;
 182     }
 183   points[nPoints] = points[0];
 184   XFillPolygon(dpy, drawableXID, gc, &(points.front()), nPoints,
 185                Complex, CoordModeOrigin);
 186   // no fast fail
 187 }
 188
 189 void gnu::gcj::xlib::GC::clearArea(jint x, jint y, jint w, jint h,
 190                                    jboolean exposures)
 191 {
 192   Display* display = target->getDisplay();
 193   ::Display* dpy = (::Display*) (display->display);
 194   ::Drawable drawableXID = target->getXID();
 195
 196   XClearArea(dpy, drawableXID, x, y, w, h,
 197              exposures ? True : False);
 198   // no fast fail
 199 }
 200
 201
 202 void gnu::gcj::xlib::GC::putImage(XImage* image,
 203                                   jint srcX, jint srcY,
 204                                   jint destX, jint destY,
 205                                   jint width, jint height)
 206 {
 207   Display* display = target->getDisplay();
 208   ::Display* dpy = (::Display*) (display->display);
 209   ::Drawable drawableXID = target->getXID();
 210   ::GC gc = (::GC) structure;
 211   ::XImage* ximage = (::XImage*) (image->structure);
 212
 213   XPutImage(dpy, drawableXID, gc, ximage,
 214             srcX, srcY,
 215             destX, destY,
 216             width, height);
 217   // no fast fail
 218 }
 219
 220 void gnu::gcj::xlib::GC::updateClip(AWTRectArray* rectangles)
 221 {
 222   int numRect = JvGetArrayLength(rectangles);
 223   XRectVector* xrectvector = new XRectVector(numRect);
 224
 225   for (int i=0; i<numRect; i++)
 226   {
 227     AWTRect* awtrect = elements(rectangles)[i];
 228     XRectangle& xrect = (*xrectvector)[i];
 229
 230     xrect.x      = awtrect->x;
 231     xrect.y      = awtrect->y;
 232     xrect.width  = awtrect->width;
 233     xrect.height = awtrect->height;
 234   }
 235
 236   Display* display = target->getDisplay();
 237   ::Display* dpy = (::Display*) (display->display);
 238   ::GC gc = (::GC) structure;
 239
 240   int originX = 0;
 241   int originY = 0;
 242   int ordering = Unsorted;
 243   XSetClipRectangles(dpy, gc, originX, originY,
 244                      &(xrectvector->front()), numRect,
 245                      ordering);
 246   delete xrectvector;
 247 }
 248
 249 void gnu::gcj::xlib::GC::copyArea (gnu::gcj::xlib::Drawable * source,
 250                                   jint srcX, jint srcY,
 251                                   jint destX, jint destY,
 252                                   jint width, jint height)
 253 {
 254   Display* display = target->getDisplay ();
 255   ::Display* dpy = (::Display*) (display->display);
 256   ::Drawable drawableXID = target->getXID ();
 257   ::GC gc = (::GC) structure;
 258   ::Drawable srcXID = source->getXID ();
 259
 260   XCopyArea (dpy, srcXID, drawableXID, gc, srcX, srcY, width, height,
 261     destX, destY);
 262 }