home *** CD-ROM | disk | FTP | other *** search
- //
- // "$Id: Fl_Image.cxx,v 1.5 1999/01/07 19:17:21 mike Exp $"
- //
- // Image drawing code 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/fl_draw.H>
- #include <FL/x.H>
- #include <FL/Fl_Widget.H>
- #include <FL/Fl_Menu_Item.H>
- #include <FL/Fl_Image.H>
-
- void Fl_Image::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;
- if (!id) {
- id = (ulong)fl_create_offscreen(w, h);
- fl_begin_offscreen((Fl_Offscreen)id);
- fl_draw_image(array, 0, 0, w, h, d, ld);
- fl_end_offscreen();
- }
- fl_copy_offscreen(X, Y, W, H, (Fl_Offscreen)id, cx, cy);
- }
-
- Fl_Image::~Fl_Image() {
- if (id) fl_delete_offscreen((Fl_Offscreen)id);
- }
-
- static void image_labeltype(
- const Fl_Label* o, int x, int y, int w, int h, Fl_Align a)
- {
- Fl_Image* b = (Fl_Image*)(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;
- b->draw(x,y,w,h,cx,cy);
- }
-
- static void image_measure(const Fl_Label* o, int& w, int& h) {
- Fl_Image* b = (Fl_Image*)(o->value);
- w = b->w;
- h = b->h;
- }
-
- void Fl_Image::label(Fl_Widget* o) {
- Fl::set_labeltype(_FL_IMAGE_LABEL, image_labeltype, image_measure);
- o->label(_FL_IMAGE_LABEL, (const char*)this);
- }
-
- void Fl_Image::label(Fl_Menu_Item* o) {
- Fl::set_labeltype(_FL_IMAGE_LABEL, image_labeltype, image_measure);
- o->label(_FL_IMAGE_LABEL, (const char*)this);
- }
-
- //
- // End of "$Id: Fl_Image.cxx,v 1.5 1999/01/07 19:17:21 mike Exp $".
- //
-