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//
// "$Id: Fl_Bitmap.cxx,v 1.5.2.4.2.1 2001/08/05 23:58:54 easysw Exp $"
//
// Bitmap drawing routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2001 by Bill Spitzak and others.
//
// This library 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; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
#include <FL/Fl.H>
#include <FL/x.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Widget.H>
#include <FL/Fl_Menu_Item.H>
#include <FL/Fl_Bitmap.H>
void Fl_Bitmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
// account for current clip region (faster on Irix):
int X,Y,W,H; fl_clip_box(XP,YP,WP,HP,X,Y,W,H);
cx += X-XP; cy += Y-YP;
// clip the box down to the size of image, quit if empty:
if (cx < 0) {W += cx; X -= cx; cx = 0;}
if ((cx+W) > w()) W = w()-cx;
if (W <= 0) return;
if (cy < 0) {H += cy; Y -= cy; cy = 0;}
if ((cy+H) > h()) H = h()-cy;
if (H <= 0) return;
#ifdef WIN32
if (!id) {
// we need to pad the lines out to words & swap the bits
// in each byte.
int w1 = (w()+7)/8;
int w2 = ((w()+15)/16)*2;
uchar* newarray = new uchar[w2*h()];
const uchar* src = array;
uchar* dest = newarray;
static uchar reverse[16] = /* Bit reversal lookup table */
{ 0x00, 0x88, 0x44, 0xcc, 0x22, 0xaa, 0x66, 0xee,
0x11, 0x99, 0x55, 0xdd, 0x33, 0xbb, 0x77, 0xff };
for (int y=0; y < h(); y++) {
for (int n = 0; n < w1; n++, src++)
*dest++ = (reverse[*src & 0x0f] & 0xf0) |
(reverse[(*src >> 4) & 0x0f] & 0x0f);
dest += w2-w1;
}
id = (ulong)CreateBitmap(w(), h(), 1, 1, newarray);
array = newarray; // keep the pointer so I can free it later
}
HDC tempdc = CreateCompatibleDC(fl_gc);
SelectObject(tempdc, (HGDIOBJ)id);
SelectObject(fl_gc, fl_brush());
// secret bitblt code found in old MSWindows reference manual:
BitBlt(fl_gc, X, Y, W, H, tempdc, cx, cy, 0xE20746L);
DeleteDC(tempdc);
#else
if (!id) id = XCreateBitmapFromData(fl_display, fl_window,
(const char*)array, (w()+7)&-8, h());
XSetStipple(fl_display, fl_gc, id);
int ox = X-cx; if (ox < 0) ox += w();
int oy = Y-cy; if (oy < 0) oy += h();
XSetTSOrigin(fl_display, fl_gc, ox, oy);
XSetFillStyle(fl_display, fl_gc, FillStippled);
XFillRectangle(fl_display, fl_window, fl_gc, X, Y, W, H);
XSetFillStyle(fl_display, fl_gc, FillSolid);
#endif
}
Fl_Bitmap::~Fl_Bitmap() {
#ifdef WIN32
if (id) {
DeleteObject((HGDIOBJ)id);
delete[] (uchar*)array;
}
#else
if (id) fl_delete_offscreen((Fl_Offscreen)id);
#endif
}
void Fl_Bitmap::label(Fl_Widget* w) {
w->image(this);
}
void Fl_Bitmap::label(Fl_Menu_Item* m) {
}
//
// End of "$Id: Fl_Bitmap.cxx,v 1.5.2.4.2.1 2001/08/05 23:58:54 easysw Exp $".
//
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