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- //
- // "$Id: Fl_Bitmap.cxx,v 1.5 1999/01/07 19:17:16 mike Exp $"
- //
- // Bitmap drawing routines for the Fast Light Tool Kit (FLTK).
- //
- // Copyright 1998-1999 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@easysw.com".
- //
-
- #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, 0x22, 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
- }
-
- static void bitmap_labeltype(
- const Fl_Label* o, int x, int y, int w, int h, Fl_Align a)
- {
- Fl_Bitmap* b = (Fl_Bitmap*)(o->value);
- int cx;
- if (a & FL_ALIGN_LEFT) cx = 0;
- else if (a & FL_ALIGN_RIGHT) cx = b->w-w;
- else cx = (b->w-w)/2;
- int cy;
- if (a & FL_ALIGN_TOP) cy = 0;
- else if (a & FL_ALIGN_BOTTOM) cy = b->h-h;
- else cy = (b->h-h)/2;
- fl_color((Fl_Color)o->color);
- b->draw(x,y,w,h,cx,cy);
- }
-
- static void bitmap_measure(const Fl_Label* o, int& w, int& h) {
- Fl_Bitmap* b = (Fl_Bitmap*)(o->value);
- w = b->w;
- h = b->h;
- }
-
- void Fl_Bitmap::label(Fl_Widget* o) {
- Fl::set_labeltype(_FL_BITMAP_LABEL, bitmap_labeltype, bitmap_measure);
- o->label(_FL_BITMAP_LABEL, (const char*)this);
- }
-
- void Fl_Bitmap::label(Fl_Menu_Item* o) {
- Fl::set_labeltype(_FL_BITMAP_LABEL, bitmap_labeltype, bitmap_measure);
- o->label(_FL_BITMAP_LABEL, (const char*)this);
- }
-
- //
- // End of "$Id: Fl_Bitmap.cxx,v 1.5 1999/01/07 19:17:16 mike Exp $".
- //
-