91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
//
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// "$Id: Fl_Image.cxx,v 1.5 1999/01/07 19:17:21 mike Exp $"
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//
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// Image drawing code for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-1999 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems to "fltk-bugs@easysw.com".
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//
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#include <FL/Fl.H>
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#include <FL/fl_draw.H>
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#include <FL/x.H>
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#include <FL/Fl_Widget.H>
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#include <FL/Fl_Menu_Item.H>
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#include <FL/Fl_Image.H>
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void Fl_Image::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
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// account for current clip region (faster on Irix):
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int X,Y,W,H; fl_clip_box(XP,YP,WP,HP,X,Y,W,H);
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cx += X-XP; cy += Y-YP;
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// clip the box down to the size of image, quit if empty:
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if (cx < 0) {W += cx; X -= cx; cx = 0;}
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if (cx+W > w) W = w-cx;
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if (W <= 0) return;
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if (cy < 0) {H += cy; Y -= cy; cy = 0;}
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if (cy+H > h) H = h-cy;
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if (H <= 0) return;
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if (!id) {
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id = (ulong)fl_create_offscreen(w, h);
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fl_begin_offscreen((Fl_Offscreen)id);
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fl_draw_image(array, 0, 0, w, h, d, ld);
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fl_end_offscreen();
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}
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fl_copy_offscreen(X, Y, W, H, (Fl_Offscreen)id, cx, cy);
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}
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Fl_Image::~Fl_Image() {
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if (id) fl_delete_offscreen((Fl_Offscreen)id);
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}
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static void image_labeltype(
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const Fl_Label* o, int x, int y, int w, int h, Fl_Align a)
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{
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Fl_Image* b = (Fl_Image*)(o->value);
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int cx;
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if (a & FL_ALIGN_LEFT) cx = 0;
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else if (a & FL_ALIGN_RIGHT) cx = b->w-w;
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else cx = (b->w-w)/2;
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int cy;
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if (a & FL_ALIGN_TOP) cy = 0;
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else if (a & FL_ALIGN_BOTTOM) cy = b->h-h;
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else cy = (b->h-h)/2;
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b->draw(x,y,w,h,cx,cy);
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}
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static void image_measure(const Fl_Label* o, int& w, int& h) {
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Fl_Image* b = (Fl_Image*)(o->value);
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w = b->w;
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h = b->h;
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}
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void Fl_Image::label(Fl_Widget* o) {
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Fl::set_labeltype(_FL_IMAGE_LABEL, image_labeltype, image_measure);
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o->label(_FL_IMAGE_LABEL, (const char*)this);
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}
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void Fl_Image::label(Fl_Menu_Item* o) {
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Fl::set_labeltype(_FL_IMAGE_LABEL, image_labeltype, image_measure);
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o->label(_FL_IMAGE_LABEL, (const char*)this);
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}
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//
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// End of "$Id: Fl_Image.cxx,v 1.5 1999/01/07 19:17:21 mike Exp $".
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//
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