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//
// "$Id$"
//
// Unit tests for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 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 on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl_Box.H>
#include <FL/fl_draw.H>
// Note: currently (March 2010) fl_draw_image() supports transparency with
// alpha channel only on Apple (Mac OS X), but Fl_RGB_Image->draw()
// supports transparency on all platforms !
//
//------- test the image drawing capabilities of this implementation ----------
//
class ImageTest : public Fl_Box {
public:
static Fl_Widget *create() {
int x, y;
uchar *dg, *dga, *drgb, *drgba;
dg = img_gray = (uchar*)malloc(128*128*1);
dga = img_gray_a = (uchar*)malloc(128*128*2);
drgb = img_rgb = (uchar*)malloc(128*128*3);
drgba = img_rgba = (uchar*)malloc(128*128*4);
for (y=0; y<128; y++) {
for (x=0; x<128; x++) {
*drgba++ = *drgb++ = *dga++ = *dg++ = y<<1;
*drgba++ = *drgb++ = x<<1;
*drgba++ = *drgb++ = (127-x)<<1;
*drgba++ = *dga++ = x+y;
}
}
i_rgba = new Fl_RGB_Image (img_rgba,128,128,4);
i_ga = new Fl_RGB_Image (img_gray_a,128,128,2);
return new ImageTest(TESTAREA_X, TESTAREA_Y, TESTAREA_W, TESTAREA_H);
}
static uchar *img_gray;
static uchar *img_gray_a;
static uchar *img_rgb;
static uchar *img_rgba;
static Fl_RGB_Image *i_rgba;
static Fl_RGB_Image *i_ga;
ImageTest(int x, int y, int w, int h) : Fl_Box(x, y, w, h) {
label("Testing Image Drawing\n\n"
"This test renders four images, two of them with a checker board\n"
"visible through the graphics. Color and gray gradients should be\n"
"visible. This does not test any image formats such as JPEG.");
align(FL_ALIGN_INSIDE|FL_ALIGN_BOTTOM|FL_ALIGN_LEFT|FL_ALIGN_WRAP);
box(FL_BORDER_BOX);
}
void draw() {
Fl_Box::draw();
// top left: RGB
int xx = x()+10, yy = y()+10;
fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130);
fl_draw_image(img_rgb, xx+1, yy+1, 128, 128, 3);
fl_draw("RGB", xx+134, yy+64);
// bottom left: RGBA
xx = x()+10; yy = y()+10+134;
fl_color(FL_BLACK); fl_rectf(xx, yy, 130, 130);
fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 64, 64);
fl_color(FL_WHITE); fl_rectf(xx+65, yy+65, 64, 64);
#ifdef __APPLE__
fl_draw_image(img_rgba, xx+1, yy+1, 128, 128, 4); // Apple: okay w/alpha
#else
i_rgba->draw(xx+1,yy+1); // only Fl_RGB_Image->draw() works with alpha
#endif
fl_color(FL_BLACK); fl_draw("RGBA", xx+134, yy+64);
// top right: Gray
xx = x()+10+200; yy = y()+10;
fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130);
fl_draw_image(img_gray, xx+1, yy+1, 128, 128, 1);
fl_draw("Gray", xx+134, yy+64);
// bottom right: Gray+Alpha
xx = x()+10+200; yy = y()+10+134;
fl_color(FL_BLACK); fl_rectf(xx, yy, 130, 130);
fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 64, 64);
fl_color(FL_WHITE); fl_rectf(xx+65, yy+65, 64, 64);
#ifdef __APPLE__
fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128, 2); // Apple: okay w/alpha
#else
i_ga->draw(xx+1,yy+1); // only Fl_RGB_Image->draw() works with alpha
#endif
fl_color(FL_BLACK); fl_draw("Gray+Alpha", xx+134, yy+64);
}
};
uchar *ImageTest::img_gray = 0;
uchar *ImageTest::img_gray_a = 0;
uchar *ImageTest::img_rgb = 0;
uchar *ImageTest::img_rgba = 0;
Fl_RGB_Image *ImageTest::i_rgba = 0;
Fl_RGB_Image *ImageTest::i_ga = 0;
UnitTest images("drawing images", ImageTest::create);
//
// End of "$Id$"
//
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