diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/unittest_images.cxx | 96 |
1 files changed, 76 insertions, 20 deletions
diff --git a/test/unittest_images.cxx b/test/unittest_images.cxx index f9f09a09f..d838010dc 100644 --- a/test/unittest_images.cxx +++ b/test/unittest_images.cxx @@ -3,7 +3,7 @@ // // Unit tests for the Fast Light Tool Kit (FLTK). // -// Copyright 1998-2010 by Bill Spitzak and others. +// Copyright 1998-2011 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 @@ -35,15 +35,31 @@ // //------- test the image drawing capabilities of this implementation ---------- // + +// Some parameters for fine tuning for developers - their +// default values ought to be: CB=1, DX=0, LX=0, IMG=1 +#define CB (1) // 1 to show the checker board background for alpha images, 0 otherwise +#define DX (0) // additional (undefined (0)) pixels per line, must be >= 0 + // ignored (irrelevant), if LX == 0 (see below) +#define LX (0) // 0 for default: ld() = 0, i.e. ld() defaults (internally) to w()*d() + // +1: ld() = (w() + DX) * d() + // -1 to flip image vertically: ld() = - ((w() + DX) * d()) +#define IMG (1) // 1 to use Fl_RGB_Image for drawing images, + // 0 to use fl_draw_image() instead. + // Note: as of April 2011, only 1 (Fl_RGB_Image) works correctly with alpha + // channel, 0 (fl_draw_image()) ignores the alpha channel (FLTK 1.3.0). + // There are plans to support alpha in fl_draw_image() in FLTK 1.3.x, + // but not in FLTK 1.1.x . + 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); + dg = img_gray = (uchar*)malloc((128+DX)*128*1); + dga = img_gray_a = (uchar*)malloc((128+DX)*128*2); + drgb = img_rgb = (uchar*)malloc((128+DX)*128*3); + drgba = img_rgba = (uchar*)malloc((128+DX)*128*4); for (y=0; y<128; y++) { for (x=0; x<128; x++) { *drgba++ = *drgb++ = *dga++ = *dg++ = y<<1; @@ -51,17 +67,33 @@ public: *drgba++ = *drgb++ = (127-x)<<1; *drgba++ = *dga++ = x+y; } + if (DX > 0 && LX != 0) { + memset(dg, 0,1*DX); dg += 1*DX; + memset(dga, 0,2*DX); dga += 2*DX; + memset(drgb, 0,3*DX); drgb += 3*DX; + memset(drgba,0,4*DX); drgba += 4*DX; + } } - i_rgba = new Fl_RGB_Image (img_rgba,128,128,4); - i_ga = new Fl_RGB_Image (img_gray_a,128,128,2); + if (LX<0) { + img_gray += 127*(128+DX); + img_gray_a += 127*(128+DX)*2; + img_rgb += 127*(128+DX)*3; + img_rgba += 127*(128+DX)*4; + } + i_g = new Fl_RGB_Image (img_gray ,128,128,1,LX*(128+DX)); + i_ga = new Fl_RGB_Image (img_gray_a,128,128,2,LX*(128+DX)*2); + i_rgb = new Fl_RGB_Image (img_rgb, 128,128,3,LX*(128+DX)*3); + i_rgba = new Fl_RGB_Image (img_rgba, 128,128,4,LX*(128+DX)*4); 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_g; static Fl_RGB_Image *i_ga; + static Fl_RGB_Image *i_rgb; + static Fl_RGB_Image *i_rgba; 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" @@ -77,32 +109,54 @@ public: 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); +#if IMG + i_rgb->draw(xx+1,yy+1); +#else + fl_draw_image(img_rgb, xx+1, yy+1, 128, 128, 3, LX*((128+DX)*3)); +#endif 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); - i_rgba->draw(xx+1,yy+1); // only Fl_RGB_Image->draw() works with alpha + fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); // black frame + fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 128, 128); // white background +#if CB // checker board + fl_color(FL_BLACK); fl_rectf(xx+65, yy+1, 64, 64); + fl_color(FL_BLACK); fl_rectf(xx+1, yy+65, 64, 64); +#endif +#if IMG + i_rgba->draw(xx+1,yy+1); +#else + fl_draw_image(img_rgba, xx+1, yy+1, 128, 128, 4, LX*((128+DX)*4)); +#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); +#if IMG + i_g->draw(xx+1,yy+1); +#else + fl_draw_image(img_gray, xx+1, yy+1, 128, 128, 1, LX*((128+DX)*1)); +#endif 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); - i_ga->draw(xx+1,yy+1); // only Fl_RGB_Image->draw() works with alpha + fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); // black frame + fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 128, 128); // white background +#if CB // checker board + fl_color(FL_BLACK); fl_rectf(xx+65, yy+1, 64, 64); + fl_color(FL_BLACK); fl_rectf(xx+1, yy+65, 64, 64); +#endif +#if IMG + i_ga->draw(xx+1,yy+1); +#else + fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128, 2, LX*((128+DX)*2)); +#endif fl_color(FL_BLACK); fl_draw("Gray+Alpha", xx+134, yy+64); } }; @@ -111,8 +165,10 @@ 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_g = 0; Fl_RGB_Image *ImageTest::i_ga = 0; +Fl_RGB_Image *ImageTest::i_rgb = 0; +Fl_RGB_Image *ImageTest::i_rgba = 0; UnitTest images("drawing images", ImageTest::create); |